WO2023138380A1 - 一种转轴机构、支撑装置和折叠屏设备 - Google Patents
一种转轴机构、支撑装置和折叠屏设备 Download PDFInfo
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- WO2023138380A1 WO2023138380A1 PCT/CN2023/070520 CN2023070520W WO2023138380A1 WO 2023138380 A1 WO2023138380 A1 WO 2023138380A1 CN 2023070520 W CN2023070520 W CN 2023070520W WO 2023138380 A1 WO2023138380 A1 WO 2023138380A1
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- Prior art keywords
- swing arm
- rotating shaft
- transmission
- shaft
- base
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
- G06F1/1681—Details related solely to hinges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
- H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
- H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
- H04M1/022—The hinge comprising two parallel pivoting axes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
- H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0226—Hinges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2370/00—Apparatus relating to physics, e.g. instruments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
Definitions
- the present application relates to the technical field of folding screen equipment, and in particular to a rotating shaft mechanism, a supporting device and folding screen equipment.
- the folding screen device includes two casings and a rotating shaft mechanism connected between the two casings.
- the shaft cover covers the back side of the rotating shaft base and the moving parts in the rotating shaft mechanism.
- the shells on both sides and the shaft cover overlap each other to maintain the appearance of the folding screen device.
- the overlap between the housings on both sides and the shaft cover is insufficient.
- the housings on both sides are separated from the shaft cover, and the internal moving parts are exposed, which affects the quality and appearance of the folding screen device.
- Embodiments of the present application provide a hinge mechanism, a supporting device, and a folding screen device, which are used to solve the problem of how to avoid the exposure of internal moving parts without affecting the thinning of the folding screen device.
- a rotating shaft mechanism in a first aspect, includes a rotating shaft base, a shaft cover, a first swing arm and a first transmission mechanism.
- the shaft cover is located on the back side of the shaft base.
- the first swing arm is rotatably connected to the rotating shaft base, and the first swing arm can rotate between an unfolded position and a folded position relative to the rotating shaft base.
- the first transmission mechanism is connected between the first swing arm and the shaft cover. When the first swing arm rotates from the unfolded position to the folded position, the first transmission mechanism drives the shaft cover to move toward the shaft base.
- the hinge mechanism provided in the embodiment of the present application also includes a first swing arm and a first transmission mechanism.
- the first swing arm is used to fix the middle frame.
- the first swing arm is an active part.
- the first transmission mechanism is connected between the first swing arm and the shaft cover. When the first swing arm rotates from the unfolded position to the folded position, the shaft cover can be driven to move up by means of the first transmission mechanism.
- the thickness of the hinge mechanism described in the embodiment of the present application is equal to that of the hinge mechanism in the prior art, when the folding screen terminal is in the folded state, the axle cover rises by a certain height relative to the hinge base, and the raised axle cover can compensate the gap between the axle cover and the overlapping part of the middle frame to a certain extent, reducing the risk of exposure of the internal hinge base and the moving parts connected to the hinge base. In this way, the exposure of internal moving parts is avoided without affecting the thinning of the folding screen device.
- the first transmission mechanism includes a second swing arm.
- the second swing arm is rotatably connected to the rotating shaft base, the first swing arm is in transmission connection with the second swing arm, and the second swing arm is in transmission connection with the shaft cover.
- the first swing arm rotates from the unfolded position to the folded position, it drives the second swing arm to rotate relative to the rotating shaft base, and further drives the shaft cover to move toward the rotating shaft base by means of the second swing arm.
- the rotational movement of the first swing arm is transmitted to the shaft cover by means of the second swing arm, so that the shaft cover rises, and the second swing arm is constrained by the position of the rotating pair on the rotating shaft base, so the stability of the transmission is better.
- the first transmission mechanism includes a first sliding slot and a first sliding member.
- One of the first chute and the first sliding member is arranged on the first swing arm, the other of the first chute and the first sliding member is arranged on the second swing arm, and the first sliding member is slidably connected in the first chute.
- the first swing arm is transmission-connected with the second swing arm by means of a sliding pair composed of the first sliding slot and the first sliding member.
- the rotation angle of the second swing arm relative to the rotation shaft base is smaller than the rotation angle of the first swing arm relative to the rotation shaft base.
- the transmission angle is reduced with the help of the second swing arm.
- the second swing arm with a smaller rotation angle drives the shaft cover to move up to a smaller height, which is beneficial to reducing the overall height of the rotating shaft mechanism when it is in the unfolded state, thereby facilitating the thinning of the folding screen device in the unfolded state.
- the rotation axis of the second swing arm and the rotating shaft base is the first axis;
- the first chute has a first end and a second end, and the distance from the first end to the first axis is smaller than the distance from the second end to the first axis;
- the vertical distance from the first end to the folding screen is greater than the vertical distance from the second end to the folding screen, and when the main swing arm rotates from the unfolded position to the folded position, the first slider slides along the first chute from the first end to the second end.
- the first transmission mechanism further includes a toggle member.
- the toggle piece is relatively fixed to the second swing arm, and the second swing arm is connected to the shaft cover by means of the toggle piece. In this way, when the first swing arm drives the second swing arm to rotate relative to the shaft base, it also drives the toggle to rotate relative to the shaft base, so as to further drive the shaft cover to move upward by means of the toggle.
- the end of the transmission connection to the first swing arm is arranged on the second swing arm, and the end of the transmission connection shaft cover is arranged on the toggle member, so as to avoid the situation where the end of the transmission connection to the first swing arm and the end of the transmission connection shaft cover are arranged on the second swing arm, and the structural complexity of the second swing arm can be reduced.
- the distance between the second swing arm transmission connection end of the first swing arm and the rotation center of the second swing arm is the first distance; the end of the transmission connection shaft cover of the toggle member is arranged eccentrically relative to the rotation center of the second swing arm, and the distance between the transmission connection shaft cover end of the toggle member and the rotation center of the second swing arm is the second distance; the first distance is smaller than the second distance.
- the length of the swing arm is reduced by means of the toggle, thereby reducing the height of the shaft cover driven by the toggle, which is beneficial to reducing the overall height of the shaft mechanism when the shaft cover is in the unfolded state, thereby facilitating the thinning of the folding screen device in the unfolded state.
- the first transmission mechanism further includes a second sliding slot and a second sliding member.
- One of the second chute and the second sliding member is arranged on the toggle member, the other of the second chute and the second sliding member is arranged on the shaft cover, and the second sliding member is slidably connected in the second chute.
- the toggle piece is connected with the shaft cover through a sliding pair composed of the second sliding groove and the second sliding piece.
- the rotating shaft mechanism further includes a door panel and a second transmission mechanism.
- the door panel is rotatably connected to the first swing arm, and the second transmission mechanism is connected between the door panel and the rotating shaft base.
- the angle between the surface on the door panel for setting the folding screen and the surface of the hinge base for setting the folding screen is a first angle
- the angle between the surface of the middle frame for setting the folding screen and the surface of the hinge base for setting the folding screen is a second angle
- the first angle is smaller than the second angle.
- the rotation angle of the door panel relative to the rotating shaft base is larger than the rotating angle of the first swing arm relative to the rotating shaft base.
- the third display area of the folding screen can be folded into a drop shape to reduce the inner folding angle, reduce the probability of creases on the folding screen, ensure the display effect of the folding screen, and prolong the service life of the folding screen.
- the second transmission mechanism includes a door panel swing arm, and the door panel swing arm is rotatably connected to the rotating shaft base.
- a third chute is provided on the door panel, and the swing arm of the door panel can slide through the third chute.
- the rotating shaft mechanism also includes a synchronization mechanism; when any one of the two first swing arms rotates from the unfolded position to the folded position, the synchronization mechanism drives the other first swing arm to rotate synchronously from the unfolded position to the folded position.
- the synchronization mechanism drives the other first swing arm to rotate synchronously from the unfolded position to the folded position.
- the synchronization mechanism is connected between the two main swing arms.
- the two first transmission mechanisms are respectively connected between the two first swing arms and the shaft cover; the synchronization mechanism is connected between the second swing arms of the two first transmission mechanisms. There is ample space between the two second swing arms, which facilitates the installation of the synchronization mechanism.
- the synchronization mechanism is connected between the two door panel swing arms.
- the synchronization mechanism includes an even number of transmission gears meshing in sequence.
- the number of the transmission gears can be 2, 4, 6 and so on.
- the even-numbered transmission gears include a first transmission gear and a second transmission gear respectively located at the front and rear positions, the first transmission gear and the second transmission gear are respectively used to be relatively fixed to the two second swing arms, and the central axis of the first transmission gear and the central axis of the second transmission gear are respectively collinear with the rotation axes of the two second swing arms.
- the two second swing arms can be driven to swing synchronously through the meshing transmission of the even number of transmission gears.
- This structure is simple and easy to implement, and the more transmission gears are designed, the smaller the height of the transmission gears can be designed, which is more conducive to the thinning of the shaft mechanism.
- the more the transmission gears the higher the structural complexity, the smaller the transmission gear size, and the greater the processing difficulty. Therefore, according to different design requirements, the thinning of the shaft mechanism, structural complexity and processing difficulty can be comprehensively considered to select different numbers of transmission gears.
- the synchronization mechanism includes a transmission slider, which is located between the second swing arms of the two first transmission mechanisms; the transmission slider is slidably connected to the rotation shaft base along the length direction of the rotation shaft base, and the transmission slider is in transmission connection with the second swing arms of the two first transmission mechanisms; when any second swing arm of the two first transmission mechanisms rotates from the unfolded position to the folded position, it drives the transmission slider to slide along the length direction of the hinge base, and drives the other second swing arm to rotate synchronously from the unfolded position to the folded position.
- the occupied height of the synchronous mechanism is small, and the thickness of the rotating shaft mechanism can be reduced, which is beneficial to the thinning of the folding screen device.
- the transmission slider is provided with one of the helical chute and the slider, and the second swing arm is provided with the other of the helical chute and the slider; the center line of the helical extension path of the helical chute is parallel to the slidable direction of the transmission slider, and the slider is slidably arranged in the helical chute.
- the transmission connection mode between the transmission slider and the second swing arm is a transmission connection with a structure composed of a spiral chute and a slider. This structure is simple and occupies less space, which is beneficial to the compact design of the rotating shaft mechanism.
- the transmission connection between the transmission slider and the second swing arm includes but is not limited to a structural transmission connection composed of a screw and a nut or a structural transmission connection composed of a worm wheel and a worm.
- the rotating shaft mechanism further includes a damping mechanism; the damping mechanism is configured to apply a damping force to the first swing arm when the first swing arm rotates relative to the rotating shaft base, so as to prevent the first swing arm from rotating.
- the folding screen device can be kept at a certain, certain or arbitrary opening angle positions, so as to ensure the structural stability of the folding screen device at these opening angle positions.
- the damping mechanism is arranged between the first swing arm and the rotating shaft base, or the damping mechanism is arranged between the first chute and the first sliding member, or the damping mechanism is arranged between the second swing arm and the rotating shaft base, or the damping mechanism is arranged between the second chute and the second sliding member, or the damping mechanism is arranged between the third chute and the swing arm of the door panel, or the damping mechanism is arranged between the door panel and the first swing arm.
- one end surface of the first chute along the length direction of the rotating shaft base is a friction surface;
- the damping mechanism is connected to the first sliding member, and when the first sliding member slides along the first chute, it drives the damping mechanism to move along the friction surface;
- the damping mechanism includes a friction member and an elastic member, the friction member is located on the side facing the friction surface, and the elastic member is used to apply an elastic force directed to the friction surface to the friction member, so that the friction member contacts the friction surface.
- the friction surface is a cam surface
- the cam surface includes a first bottom area, an ascending area, a top area, a descending area, and a second bottom area sequentially arranged along the length direction of the first chute; when the first swing arm is in the unfolded position, the friction member contacts the first bottom area; when the first swing arm rotates from the unfolded position to the folded position, the friction member abuts against the friction surface, and slides along the ascending area, the top area, and the descending area in sequence; when the first swing arm is in the folded position, the friction member contacts the second bottom area.
- the rotating shaft mechanism when the rotating shaft mechanism rotates between the unfolded state and the folded state, it needs to overcome the damping force generated by the friction member and the friction surface. When there is no external force, the rotating shaft mechanism can remain in the unfolded state and the folded state, which is consistent with the user's usage habits.
- the two first sliding slots are arranged at intervals along the length direction of the rotating shaft base and are relatively fixed, and the friction surfaces of the two first sliding slots are arranged opposite to each other;
- the damping mechanism is arranged between the two first sliding slots, the number of friction members is two, the elastic member is located between the two friction members, and the elastic member simultaneously applies an elastic force directed to the corresponding friction surfaces to the two friction members, so that the two friction members respectively contact the corresponding friction surfaces.
- the damping mechanism when the rotating shaft mechanism rotates between the unfolded state and the folded state, the damping mechanism generates a larger damping force and needs to apply a larger driving force, and the rotating shaft mechanism can be stably maintained in the unfolded state or the folded state, thereby improving the use stability of the rotating shaft mechanism.
- the shaft cover when the first swing arm rotates from the folded position to the unfolded position, the shaft cover can be driven to move away from the shaft base by means of the first transmission mechanism. In this way, reset can be realized so as not to affect the upward movement of the shaft cover when folding next time.
- a limiting structure is provided between the shaft cover and the rotating shaft base, and the limiting structure allows the shaft cover to move toward or away from the rotating shaft base along the thickness direction of the rotating shaft base, and prevents the shaft cover from moving along a plane perpendicular to the thickness direction of the rotating shaft base.
- a support device in a second aspect, includes a first housing, a second housing, and the rotating shaft mechanism described in any one of the above technical solutions; the number of the first swing arms of the rotating shaft mechanism is two, and the two first swing arms are symmetrically arranged on opposite sides of the rotating shaft base, and the two first swing arms are respectively fixed to the first housing and the second housing.
- the supporting device provided by the embodiment of the present application includes the rotating shaft mechanism described in any one of the above technical solutions, both of them can solve the same technical problem and achieve the same effect, and will not be repeated here.
- a folding screen device in a third aspect, includes a folding screen and the supporting device described in the above technical solution; the folding screen includes a first display area, a second display area, and a third display area, and the third display area is connected between the first display area and the second display area; the first display area is set on the first casing, the second display area is set on the second casing; and the third display area is set on the hinge mechanism.
- folding screen device provided in the embodiment of the present application includes the hinge mechanism described in the above technical solution, both of them can solve the same technical problem and achieve the same effect, so details are not repeated here.
- FIG. 1 is a perspective view of a folding screen device in an unfolded state provided by some embodiments of the present application
- FIG. 2 is a schematic diagram of a partial exploded structure of the folding screen device shown in FIG. 1;
- FIG. 3 is a schematic structural diagram of the folding screen device shown in FIG. 1 when it is in a folded state;
- Fig. 4 is an assembly diagram of the internal main middle frame, auxiliary middle frame, hinge mechanism and folding screen of the folding screen device provided by some embodiments of the present application in the unfolded state;
- Fig. 5 is a schematic diagram of the relative positions of the hinge mechanism and the main middle frame in the folding state of the folding screen device provided by some embodiments of the present application;
- Fig. 6 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 7 is a comparison diagram of the foldable screen device including the hinge mechanism shown in Fig. 6 in the folded state and the foldable screen device shown in Fig. 5 in the folded state;
- Fig. 8 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 9 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 10 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 11 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 12 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 13 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 14 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 15 is a schematic structural diagram of a rotating shaft mechanism provided in some other embodiments of the present application.
- Fig. 16 is a schematic structural diagram of the shaft mechanism shown in Fig. 15 when it is in a folded state;
- Fig. 17 is a perspective view of a rotating shaft mechanism provided by some embodiments of the present application.
- Fig. 18 is an enlarged view of the area I of the rotating shaft mechanism shown in Fig. 17;
- Fig. 19 is a structural schematic diagram of the rotating shaft mechanism shown in Fig. 18 after hiding two door panels;
- Fig. 20 is a perspective view of the shaft base in the shaft mechanism shown in Fig. 18 and Fig. 19;
- Fig. 21 is an exploded view of the rotating shaft base shown in Fig. 20;
- Fig. 22 is an assembly diagram of the section of the rotating shaft base shown in Fig. 20 at the line A-A and the first swing arm;
- Fig. 23 is a structural schematic diagram of the rotating shaft mechanism shown in Fig. 22 in a folded state
- Fig. 24 is a structural schematic diagram of the toggle member in the shaft mechanism shown in Fig. 19;
- Fig. 25 is an assembly diagram of the toggle member shown in Fig. 24 and the second connecting part in the shaft base shown in Fig. 21;
- Fig. 26 is a schematic structural view of the second swing arm in the shaft mechanism shown in Fig. 19;
- Fig. 27 is an assembly diagram of the assembly structure shown in Fig. 25 and the second swing arm shown in Fig. 26;
- Fig. 28 is a schematic cross-sectional structural view of the shaft mechanism shown in Fig. 19 at line B-B;
- Fig. 29 is a schematic structural view of the shaft mechanism shown in Fig. 28 when it is in a half-folded state;
- Fig. 30 is a schematic structural view of the shaft cover in the shaft mechanism shown in Fig. 19;
- Fig. 31 is a schematic cross-sectional structure diagram of the shaft cover shown in Fig. 30 at line C-C;
- Fig. 32 is a schematic diagram of the assembly structure of the shaft cover shown in Fig. 31, the lifting slider and the second slider on the toggle;
- Fig. 33 is a structural schematic diagram of the shaft mechanism shown in Fig. 32 in a folded state
- Fig. 34 is a schematic cross-sectional structure diagram of the rotating shaft mechanism shown in Fig. 18 at the D-D folding line;
- Fig. 35 is a schematic structural view of the shaft mechanism shown in Fig. 18 when it is in a folded state;
- Figure 36 is an exploded view of the synchronization mechanism, the second connecting piece, the second swing arm, and the toggle piece in the rotating shaft mechanism shown in Figure 19;
- Fig. 37 is an assembly diagram of the synchronous mechanism, the second connecting piece, the second swing arm and the toggle piece in the rotating shaft mechanism shown in Fig. 36;
- Fig. 38 is an assembly diagram of the damping mechanism, the first swing arm and the second swing arm in the shaft mechanism shown in Fig. 19;
- Fig. 39 is an exploded view of the damping mechanism, the first swing arm and the second swing arm in the shaft mechanism shown in Fig. 38;
- Fig. 40 is a structural schematic diagram of area II in the shaft mechanism shown in Fig. 17;
- Fig. 41 is a structural schematic view of the hinge mechanism shown in Fig. 40 after hiding the base body and the second swing arm;
- Fig. 42 is a schematic cross-sectional structural view of the shaft mechanism shown in Fig. 40 at the E-E line;
- FIG. 43 is a schematic structural view of the hinge mechanism shown in FIG. 42 when it is in a half-folded state.
- first and second are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features.
- a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
- the terms “comprising”, “comprising” or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device.
- an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
- transmission connection means that among the two connected parts, the movement of one part can be transmitted to the other part, and the connection between the two parts includes but is not limited to at least one of the connection methods such as rotational connection, sliding connection, gear meshing transmission connection, sprocket transmission connection, and cam mechanism transmission connection.
- the present application provides a foldable screen device.
- the foldable screen device may be a user equipment (user equipment, UE) or a terminal device (terminal).
- Reality, AR) terminal equipment wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home and other mobile or fixed terminals.
- the form of the folding screen device is not specifically limited in the embodiments of the present application.
- FIG. 1 is a perspective view of a folding screen device 100 in an unfolded state provided by some embodiments of the present application
- FIG. 2 is a schematic diagram of a partial exploded structure of the folding screen device 100 shown in FIG. 1 .
- This embodiment and the following embodiments are illustrated by taking the folding screen device 100 as a handheld device with a wireless communication function.
- the handheld device with a wireless communication function may be a mobile phone, for example.
- the folding screen device 100 is approximately in the shape of a rectangular plate in an unfolded state.
- an XYZ coordinate system is established for the folding screen device 100 in the unfolded state, and the length direction of the folding screen device 100 is defined as the X-axis direction, the width direction of the folding screen device 100 is the Y-axis direction, and the thickness direction of the folding screen device 100 is the Z-axis direction.
- the setting of the coordinate system of the folding screen device 100 can be flexibly set according to actual needs, which is not specifically limited here.
- the shape of the folding screen device 100 may also be a square plate shape, a circular plate shape, an oval plate shape, and the like.
- the folding screen device 100 includes a folding screen 10 and a supporting device 20 .
- the folding screen 10 is used to display information such as images and videos.
- the folding screen 10 may be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light emitting diode (QLED) screen, a liquid crystal display (LCD) and the like.
- OLED organic light-emitting diode
- QLED quantum dot light emitting diode
- LCD liquid crystal display
- the folding screen 10 has a display area for displaying image information, and the display area of the folding screen 10 is exposed to present information such as images and videos to the user.
- the folding screen 10 includes a first display area 11 , a second display area 12 and a third display area 13 , and the third display area 13 is connected between the first display area 11 and the second display area 12 .
- the folding screen device 100 shown in FIG. 1 the folding screen 10 is in the unfolded state, and the first display area 11 , the third display area 13 , and the second display area 12 are arranged in sequence along the X-axis direction. In this way, the folding screen device 100 is folded horizontally.
- the first display area 11 , the third display area 13 , and the second display area 12 may also be arranged sequentially along the Y-axis direction. In this way, the folding screen device 100 is folded in the longitudinal direction.
- a large-screen display can be realized to provide the user with more abundant information and bring the user a better use experience.
- At least the third display area 13 of the folding screen 10 is a flexible screen structure.
- the third display area 13 can be bent and deformed by an external force, so that the folding screen 10 can be folded from the unfolded state shown in FIG. 1 to the folded state.
- the first display area 11 and the second display area 12 of the folding screen 10 may have a flexible screen structure, may also be a hard screen structure, or may have a partially flexible screen structure or a partially hard screen structure, which are not specifically limited here.
- FIG. 3 is a schematic structural diagram of the foldable screen device 100 shown in FIG. 1 in a folded state, and the foldable screen 10 in the foldable screen device 100 is also in a folded state.
- the first display area 11 and the second display area 12 of the folding screen 10 are approximately parallel and opposite to each other.
- the angle between the first display area 11 and the second display area 12 is within 30°, it can be considered that the first display area 11 and the second display area 12 are approximately parallel.
- the fact that the first display area 11 is opposite to the second display area 12 means that the display surface of the first display area 11 faces the display surface of the second display area 12 .
- the third display area 13 is folded into a water drop shape.
- the third display area 13 includes an arc segment 133 , a first transition segment 131 and a second transition segment 132 .
- the first transition section 131 is connected between the arc section 133 and the first display area 11 .
- the second transition section 132 is connected between the arc section 133 and the second display area 12 .
- the distance between the end of the first transition segment 131 connected to the first display area 11 and the end of the second transition segment 132 connected to the second display area 12 is the third distance
- the distance between the end of the first transition segment 131 connected to the arc segment 133 and the end of the second transition segment 132 connected to the arc segment 133 is the fourth distance
- the fourth distance is greater than the third distance
- the folding screen device 100 When the folding screen device 100 is in the folded state, please continue to refer to FIG. 3 , the supporting device 20 is protected outside the folding screen 10 , the folding screen 10 is invisible to the user, and can prevent the folding screen 10 from being scratched by hard objects.
- the supporting device 20 is used for supporting the folding screen 10 .
- the supporting device 20 includes a first housing (also called a main housing) 21 , a second housing (also called an auxiliary housing) 22 and a rotating shaft mechanism 23 .
- the first housing 21 carries the first display area 11
- the second housing 22 carries the second display area 12 .
- the hinge mechanism 23 is connected between the first casing 21 and the second casing 22 and supports the third display area 13 .
- the hinge mechanism 23 is used to realize the rotation between the second casing 22 and the first casing 21 to support the folding of the folding screen 10 between the unfolded state and the folded state.
- the first housing 21 may include a middle frame and a back cover connected together, the first display area 11 of the folding screen 10 is carried on the middle frame of the first housing 21, the back cover is located on the side of the middle frame away from the first display area 11, and the back cover may be replaced by a display screen (such as an LCD display screen).
- An accommodating cavity is formed between the middle frame and the back cover, and the accommodating cavity is used for accommodating electronic components such as a motherboard, a camera module, and a battery.
- the first housing 21 can be connected to the rotating shaft mechanism 23 by means of the middle frame, or can be connected to the rotating shaft mechanism 23 by means of the back cover. The following embodiments are illustrated by taking the connection of the first housing 21 with the rotating shaft mechanism 23 by means of the middle frame as an example.
- the second housing 22 may also include a middle frame and a back cover connected together, the second display area 12 of the folding screen 10 is carried on the middle frame of the second housing 22, the back cover is located on the side of the middle frame away from the second display area 12, and the back cover may also be replaced by a display screen (such as an LCD display screen).
- An accommodating cavity is formed between the middle frame and the back cover, and the accommodating cavity is used for accommodating electronic components such as sub-boards, speaker modules, chips, and batteries.
- the second housing 22 can be connected to the rotating shaft mechanism 23 by means of the middle frame, or can be connected to the rotating shaft mechanism 23 by means of the back cover. The following embodiments are described by taking the connection of the second housing 22 with the rotating shaft mechanism 23 by means of the middle frame as an example.
- the middle frame of the first casing 21 is called the main middle frame, which is marked as A in the drawings, and the middle frame of the second casing 22 is called the sub-middle frame, and the mark is B in the drawings.
- FIG. 4 is an assembly diagram of the folding screen device 100 in the unfolded state provided by some embodiments of the present application, the internal main middle frame A, the secondary middle frame B, the hinge mechanism 23 and the folding screen 10 .
- the shaft mechanism 23 includes a shaft base 231 and a shaft cover 232 .
- the rotating shaft base 231 provides a position reference in the rotating shaft mechanism 23.
- the main middle frame A and the auxiliary middle frame B are rotatably connected to the rotating shaft base 231.
- the main middle frame A and the auxiliary middle frame B can rotate relative to the rotating shaft base 231 to make the folding screen device 100 move between the unfolded state and the folded state.
- the hinge base 231 is also used to support part of the folding screen, specifically, the hinge base 231 is used to support the third display area 13 of the folding screen 10 in the folding screen device shown in FIG. 3 .
- the shaft cover 232 is located on the back side of the shaft base 231 .
- the back side of the hinge base 231 refers to the side of the hinge base 231 away from the folding screen 10
- the "back side” used in describing other components in the hinge mechanism 23 in the following embodiments refers to the side of the described component away from the folding screen 10, and will not be described in detail in the following embodiments.
- the shaft cover 232 is used as an appearance part of the shaft mechanism 23 (that is, an externally visible part), and is used to cover the shaft base 231 in the shaft mechanism 23 and the moving parts connected to the shaft base 231 (not shown in the figure), so as to ensure the appearance of the folding screen device and prevent the relative movement between the moving parts in the shaft mechanism 23 and the shaft base 231 from being interfered by the outside world.
- the shaft cover 232 is fixedly connected to the shaft base 231 .
- This connection method is stable and easy to implement, and the relative position of the shaft cover 232 and the shaft base 231 is fixed.
- the shaft cover 232 always covers the back side of the shaft base 231 and the moving parts connected to the shaft base 231, so that the relative movement between the moving parts in the shaft mechanism 23 and the shaft base 231 can be effectively prevented from being interfered by the outside world.
- the shaft cover 232 is used as the exterior part of the shaft mechanism 23.
- the overlap amount L gradually decreases; when the folding screen device moves from the folded state to the unfolded state, the overlap amount L gradually increases.
- the minimum overlapping amount is the overlapping amount when the folding screen device is in the folded state, and the minimum overlapping amount should be greater than or equal to 0 millimeters (mm), so as to avoid a step difference between the overlapping part C and the shaft cover 232, thereby avoiding the exposure of the internal moving parts of the rotating shaft mechanism 23.
- the thickness H of the hinge mechanism 23 gradually decreases, and the overlapping amount L of the overlapping portion C and the shaft cover 232 is insufficient, resulting in when the folding screen device is in the folded state, please refer to FIG.
- the hinge base 231 and the moving parts connected to the hinge base 231 are exposed, affecting the appearance and quality of the folding screen device 100 .
- FIG. 6 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the rotating shaft mechanism 23 includes a rotating shaft base 231 , a shaft cover 232 , a first swing arm 233 and a first transmission mechanism 234 .
- the functions of the shaft base 231 and the shaft cover 232 are the same as those of the shaft base 231 and the shaft cover 232 in the above embodiments.
- the shape of the rotating shaft base 231 can be various, and the rotating shaft base 231 can be a whole structure, or can be formed by assembling a plurality of parts.
- the shaft cover 232 can be semicircular, arc or U-shaped, and can also be in other shapes. Materials of the shaft base 231 and the shaft cover 232 include but are not limited to metal and plastic.
- the shaft cover 232 is located on the back side of the shaft base 231 .
- the first swing arm 233 can also be referred to as the main swing arm.
- the first swing arm 233 is rotatably connected (also referred to as hinged or rotationally connected) to the shaft base 231 by means of the swivel pair 1.
- the first swing arm 233 is used to fix the middle frame (including the main middle frame A and the auxiliary middle frame B).
- the first swing arm 233 moves along with the middle frame, and the first swing arm 233 can be understood as the active part of the hinge mechanism 23 .
- the number of first swing arms 233 is two, and the two first swing arms 233 are symmetrically arranged on opposite sides of the rotating shaft base 231 , and the two first swing arms 233 are used to fix the main middle frame A and the auxiliary middle frame B respectively.
- the two first swing arms 233 are rotatably connected to the hinge base 231 , and the two first swing arms 233 can rotate relative to the hinge base 231 between an unfolded position and a folded position.
- the first transmission mechanism 234 is connected between the first swing arm 233 and the shaft cover 232.
- the first transmission mechanism 234 can drive the shaft cover 232 to move toward the shaft base 231 along the direction b1.
- the movement of the shaft cover 232 toward the shaft base 231 means that the shaft cover 232 moves in a direction such that the distance between the shaft cover 232 and the shaft base 231 is getting closer.
- the rotating shaft base 231 as a positional reference, based on the azimuth relationship shown in FIG. 6 , the movement of the shaft cover 232 toward the rotating shaft base 231 is an upward movement.
- the upward movement of the shaft cover 232 may be an upward movement along the Z-axis direction.
- the upward movement track of the shaft cover 232 may also be inclined at a certain angle relative to the Z-axis direction, such as 5°, 6°, 7°, 8°, 9° or 10°, etc. It should be noted that, when the upward movement trajectory of the shaft cover 232 is inclined at an angle less than 5° relative to the Z-axis direction, it can be considered that the shaft cover 232 moves upward along the Z-axis direction.
- the embodiment of the present application is exemplified by taking the ascending movement of the shaft cover 232 along the Z-axis direction as an example, which should not be regarded as a special limitation to the present application.
- the number of the first transmission mechanism 234 can be two, and the two first transmission mechanisms 234 are respectively connected between the two first swing arms 233 and the shaft cover 232, and when the two first swing arms 233 rotate from the unfolded position to the folded position, the two first transmission mechanisms 234 are used to drive the shaft cover 232 to move upward. In this way, the upward movement of the shaft cover 232 is stable, and it is not easy to be skewed, and problems such as jamming are prevented.
- the number of the first transmission mechanism 234 may also be one, and the one first transmission mechanism 234 is connected between one first swing arm 233 of the two first swing arms 233 and the shaft cover 232 . In this way, when the two first swing arms 233 rotate from the unfolded position to the folded position, the shaft cover 232 can still be driven to move toward the shaft base 231 by means of the one first transmission mechanism 234 .
- the composition and structure of the rotating shaft mechanism 23 is simple, the cost is low, and the assembly efficiency is high.
- the hinge mechanism 23 provided by the embodiment of the present application also includes a first swing arm 233 and a first transmission mechanism 234.
- the first swing arm 233 is used to fix the middle frame (including the main middle frame A and the auxiliary middle frame B).
- the first swing arm 233 is an active part.
- the first transmission mechanism 234 is connected between the first swing arm 233 and the shaft cover 232 .
- the shaft cover 232 can be driven to move up by means of the first transmission mechanism 234 .
- the thickness of the hinge mechanism 23 in the embodiment of the present application is equal to the thickness of the hinge mechanism 23 in the foldable screen terminal 100 shown in FIGS. 4-5
- the foldable screen terminal 100 when the foldable screen terminal 100 is in the folded state, please refer to FIG. 7 .
- the size, shape and relative position of the main middle frame A) are the same, and the positions in Fig. 7 coincide.
- the axis cover 232 of the folding screen device 100 shown in FIG. 5 is at a position
- the axis cover 232 of the folding screen device 100 including the hinge mechanism 23 shown in FIG. 6 is at a position b, and the b position is higher than the a position.
- the raised shaft cover 232 can compensate the gap between the shaft cover 232 and the overlapping part C of the middle frame to a certain extent, and reduce the risk of exposure of the inner shaft base 231 and the moving parts connected to the shaft base 231 .
- the above h2 is approximately 0 or less than 0. It should be noted that, h2 being less than 0 means that there is an overlapping amount between the shaft cover 232 and the overlapping portion C. In this way, the gap between the shaft cover 232 and the overlapping portion C of the middle frame is effectively compensated, and the risk of exposure of the inner shaft base 231 and moving parts connected to the shaft base 231 is reduced as much as possible.
- the first transmission mechanism 234 can drive the shaft cover 232 to move away from the shaft base 231 in the direction opposite to the direction b1.
- the movement of the shaft cover 232 away from the shaft base 231 means that the shaft cover 232 moves in a direction such that the distance between the shaft cover 232 and the shaft base 231 becomes farther and farther.
- the rotating shaft base 231 as a position reference, based on the azimuth relationship shown in FIG. 6 , the movement of the shaft cover 232 away from the rotating shaft base 231 is a downward movement. In this way, resetting can be realized so as not to affect the upward movement of the shaft cover 232 during the next folding.
- the downward movement of the shaft cover 232 may also be a downward movement along the -Z axis direction, wherein the -Z axis direction refers to the opposite direction of the Z axis direction.
- the descending trajectory of the shaft cover 232 can also be inclined at a certain angle relative to the -Z axis direction, such as 5°, 6°, 7°, 8°, 9°, 10° and so on. It should be noted that, when the descending movement track of the shaft cover 232 is inclined within less than 5° relative to the -Z axis direction, it can be considered that the shaft cover 232 descends along the -Z axis direction.
- Each of the following embodiments is described as an example with the assumption that the descending movement of the shaft cover 232 is a descending movement along the -Z axis direction.
- the shaft cover 232 In order to ensure the reliability of the upward movement and downward movement of the shaft cover 232, in some embodiments, please refer back to FIG. 6, there is a limiting structure 230 between the shaft cover 232 and the rotating shaft base 231. In this way, by means of the limit structure 230, the stability of the rising or falling movement of the shaft cover 232 can be ensured, and the shaft cover 232 can be prevented from misalignment with respect to the rotating shaft base 231 and unable to cover the rotating shaft base 231 and the motion mechanism connected to the rotating shaft base 231.
- the limiting structure 230 may include a limiting slide 2301 and a limiting sliding member 2302 .
- the limiting sliding slot 2301 is disposed on the rotating shaft base 231
- the limiting sliding member 2302 is disposed on the shaft cover 232 .
- the limiting sliding member 2302 is arranged on the rotating shaft base 231
- the limiting sliding groove 2301 is arranged on the shaft cover 232
- the limiting sliding groove 2301 extends along the Z-axis direction
- the limiting sliding member 2302 is arranged in the limiting sliding groove 2301, and can slide along the limiting sliding groove 2301.
- the limiting sliding groove 2301 and the limiting sliding member 2302 form a sliding constraint, so that the shaft cover 232 slides relative to the rotating shaft base 231 along the Z-axis direction.
- This structure is simple and easy to implement.
- the limiting structure 230 may also consist of a guide rail and a slider slidably connected to the guide rail, or consist of a limiting hole and a limiting post slidably passed through the limiting hole, which is not limited here.
- the first transmission mechanism 234 is a connecting rod connected between the first swing arm 233 and the shaft cover 232 .
- the first transmission mechanism 234 is a sliding pair connected between the first swing arm 233 and the shaft cover 232, as long as the first swing arm 233 can rotate between the unfolded position and the folded position, the first transmission mechanism 234 can be used to drive the shaft cover 232 to move up and down.
- FIG. 8 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the first transmission mechanism 234 is a connecting rod, one end of the connecting rod is rotatably connected to the first swing arm 233 , and the other end of the connecting rod is rotatably connected to the shaft cover 232 .
- the connecting rod can drive the shaft cover 232 to move toward the shaft base 231 along the direction b1.
- the structure of the first transmission mechanism 234 is simple, the assembly difficulty is low, and the assembly efficiency is high.
- FIG. 9 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the first transmission mechanism 234 is a sliding pair.
- the sliding pair includes a sliding slot 234a and a sliding piece 234b.
- the structural form of the sliding member 234b includes but is not limited to a slider, a sliding column, a roller, a roller, a roller or a roller.
- the sliding member 234b is fixed on the first swing arm 233
- the sliding slot 234a is fixed on the shaft cover 232 .
- the sliding member 234 b can also be fixed on the shaft cover 232 , and the sliding slot 234 a is fixed on the first swing arm 233 .
- the sliding member 234b is slidably connected in the sliding groove 234a. In this way, the chute 234a and the sliding member 234b form a sliding pair.
- the sliding member 234b moves the chute 234a upwards and slides along the chute 234a, thereby driving the shaft cover 232 to move toward the rotating shaft base 231 along the direction b1.
- the structure of the first transmission mechanism 234 is simple, the assembly difficulty is low, and the assembly efficiency is high.
- the sliding pair in this embodiment is not limited to the sliding groove and the sliding member, but can also be a guide rail and a sliding block, which is not limited in this application.
- FIG. 10 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the first transmission mechanism 234 includes a second swing arm 2341 .
- the second swing arm 2341 can also be called a slave swing arm.
- the second swing arm 2341 is rotatably connected to the rotating shaft base 231 by means of the rotating pair 2 , and the first swing arm 233 is in transmission connection with the second swing arm 2341 .
- the first swing arm 233 rotates along the direction a1 from the unfolded position to the folded position, it can drive the second swing arm 2341 to rotate relative to the rotating shaft base 231 .
- the second swing arm 2341 is also in transmission connection with the shaft cover 232 , and when the first swing arm 233 rotates from the unfolded position to the folded position along the direction a1, the second swing arm 2341 can further drive the shaft cover 232 to move up. In this way, the rotational movement of the first swing arm 233 is transmitted to the shaft cover 232 by means of the second swing arm 2341, so that the shaft cover 232 rises, and the second swing arm 2341 is constrained by the position of the rotating pair 2 on the shaft base 231, so the transmission is more stable.
- the overall height of the shaft mechanism 23 is a key factor affecting the thickness of the folding screen device.
- the overall height of the shaft mechanism 23 is affected by the thickness of the shaft base 231, the thickness of the shaft cover 232, and the rise of the shaft cover 232 during the movement from the unfolded state to the folded state.
- the thickness of the shaft base 231 and the thickness of the shaft cover 232 remain unchanged, the height of the shaft cover 232 during the movement from the unfolded state to the folded state.
- the smaller the lifting amount the thinner the overall thickness of the hinge mechanism 23 can be designed, which is more conducive to the thinning of the folding screen device in the unfolded state.
- the first swing arm 233 and the second swing arm 2341 are located on the same side of the hinge base 231 .
- the rotation direction of the second swing arm 2341 relative to the rotation shaft base 231 is the same as the rotation direction of the first swing arm 233 relative to the rotation shaft base 231 .
- the rotation directions of the two components described in the embodiment of the present application are the same, which means that the two components in the transmission connection both rotate clockwise or counterclockwise under the same viewing angle.
- the rotation direction of the second swing arm 2341 is the same as the rotation direction of the first swing arm 233.
- the rotation direction a1 of the first swing arm 233 is counterclockwise
- the right second swing arm 2341 is in transmission connection with the right first swing arm 233
- the rotation direction a2 of the right second swing arm 2341 is also counterclockwise, so the rotation direction of the direction a2 is the same as that of the direction a1.
- the rotation angle of the second swing arm 2341 relative to the shaft base 231 is smaller than the rotation angle of the first swing arm 233 relative to the shaft base 231 .
- the rotation angle relative to the rotating shaft base 231 when the first swing arm 233 rotates from the unfolded position to the folded position, the rotation angle relative to the rotating shaft base 231 may be 90°.
- the rotating angle of the second swing arm 2341 relative to the rotating shaft base 231 may be 75°, 80°, 85°, etc., which is not limited in this application.
- the rotation angle relative to the rotating shaft base 231 can also be designed to other angles according to the form, which is not specifically limited here. In this way, the transmission angle is reduced by means of the second swing arm 2341 .
- the second swing arm 2341 Compared with the solution of using the first swing arm 233 to directly drive the shaft cover 232 to move up, the second swing arm 2341 with a smaller rotation angle drives the shaft cover 232 to move up to a smaller height, which is beneficial to reducing the overall height of the rotating shaft mechanism 23 when it is in the unfolded state, thereby facilitating the thinning of the folding screen device 100 in the unfolded state.
- the first swing arm 233 may be connected to the second swing arm 2341 through a connecting rod, or may be connected to the second swing arm 2341 through a sliding pair, which is not limited herein.
- FIG. 11 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the first transmission mechanism 234 includes a first connecting rod 234c, and the first swing arm 233 is in transmission connection with the second swing arm 2341 by means of the first connecting rod 234c.
- one end of the first link 234c is rotatably connected to the first swing arm 233
- the other end of the first link 234c is rotatably connected to the second swing arm 2341 .
- the second swing arm 2341 can be driven to rotate along the direction a2 relative to the rotating shaft base 231 by means of the first link 234c.
- the rotation axis of the first swing arm 233 on the rotation shaft base 231 is not collinear with the rotation axis of the second swing arm 2341 on the rotation shaft base 231 .
- the hinge base 231, the first swing arm 233, the first connecting rod 234c and the second swing arm 2341 form a hinge four-bar mechanism.
- the degree of freedom of the hinge four-bar mechanism is 1, the movement mode is unique, and the stability is better.
- the rotation angle of the second swing arm 2341 relative to the hinge base 231 is smaller than the rotation angle of the first swing arm 233 relative to the hinge base 231 when the hinge mechanism 23 moves from the unfolded state to the folded state. angle.
- This structure is simple and easy to implement.
- FIG. 12 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the first transmission mechanism 234 includes a sliding pair 2342 , and the first swing arm 233 is in transmission connection with the second swing arm 2341 through the sliding pair 2342 .
- the sliding pair 2342 includes a first slot 2342a and a first sliding member 2342b.
- the first sliding slot 2342a is disposed on the second swing arm 2341 , the structure of the first sliding member 2342b includes but not limited to a slider, a sliding post, a roller, a roller, a roller or a roller, and the first sliding member 2342b is disposed on the first swing arm 233 .
- the first sliding slot 2342a can also be disposed on the first swing arm 233
- the first sliding member 2342b is disposed on the second swing arm 2341 .
- the first sliding member 2342b is slidably connected in the first sliding groove 2342a.
- the first swing arm 233 is transmission-connected with the second swing arm 2341 by means of the sliding pair formed by the first sliding slot 2342a and the first sliding member 2342b.
- the first sliding member 2342b can be pushed upwards by means of the first sliding slot 2342a, so that the second swinging arm 2341 rotates relative to the rotating shaft base 231 along the direction a2, and at the same time, the first sliding member 2342b slides in the first sliding slot 2342a.
- the rotation axis of the first swing arm 233 on the rotation shaft base 231 is not collinear with the rotation axis of the second swing arm 2341 on the rotation shaft base 231 .
- the rotating shaft base 231, the first swing arm 233, the sliding pair 2342 and the second swing arm 2341 form a crank-slider mechanism.
- the crank-slider mechanism has a degree of freedom of 1, a unique movement mode, excellent stability, and a simple structure. It takes up less space and height, which is conducive to the miniaturization and thinning of the rotating shaft mechanism 23.
- the sliding pair 2342 in the above embodiment is not limited to being composed of a sliding groove and a sliding piece, but may also be composed of a guide rail and a sliding block, which is not specifically limited in the present application.
- the rotation axis of the second swing arm 2341 and the rotating shaft base 231 is the first axis (ie, the axis of the rotation pair 2 ).
- the first sliding slot 2342a has a first end d3 and a second end d4, and the distance from the first end d3 to the first axis is smaller than the distance from the second end d4 to the first axis.
- the first swing arm 233 When the first swing arm 233 is in the unfolded position, the vertical distance from the first end d3 to the folding screen is greater than the vertical distance from the second end d4 to the folding screen, that is to say, the first chute 2342a is inclined from the first end d3 to the second end d4 in a direction close to the folding screen.
- the first sliding member 2342b slides along the first slide groove 2342a from the first end d3 to the second end d4. In this way, when the hinge mechanism 23 moves from the unfolded state to the folded state, the rotation angle of the second swing arm 2341 relative to the hinge base 231 is smaller than the rotation angle of the first swing arm 233 relative to the hinge base 231 .
- FIG. 13 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the first transmission mechanism 234 further includes a toggle member (also referred to as a crank toggle member) 2343 .
- the toggle member 2343 is relatively fixed to the second swing arm 2341 .
- the toggle piece 2343 and the second swing arm 2341 can be two independent structural parts and fixed together by means of welding, clamping, threaded connection, bonding, etc.
- the toggle piece 2343 and the second swing arm 2341 can also be a whole structural piece, that is, the toggle piece 2343 and the second swing arm 2341 are integrally formed, which is not specifically limited in the present application.
- the second swing arm 2341 is in transmission connection with the shaft cover 232 via the toggle member 2343 .
- the first swing arm 233 drives the second swing arm 2341 to rotate relative to the shaft base 231 , it also drives the toggle member 2343 to rotate relative to the shaft base 231 , so as to further drive the shaft cover 232 to move up by means of the toggle member 2343 .
- the end of the transmission connection to the first swing arm 233 is arranged on the second swing arm 2341, and the end of the transmission connection shaft cover 232 is arranged on the toggle member 2343, so as to avoid the situation where the end of the transmission connection to the first swing arm 233 and the end of the transmission connection shaft cover 232 are concentrated on the second swing arm 2341, and the structural complexity of the second swing arm 2341 can be reduced.
- the distance between the end D2 of the transmission connection shaft cover 232 and the rotation center of the second swing arm 2341 is the second distance.
- the first distance is less than the second distance.
- the length of the swing arm is reduced by means of the toggle member 2343, thereby reducing the lift height of the shaft cover 232 driven by the toggle member 2343, which is beneficial to reducing the overall height of the shaft mechanism 23 when the shaft cover 232 is in the unfolded state, thereby facilitating the thinning of the folding screen device 100 in the unfolded state.
- the toggle member 2343 may be in transmission connection with the shaft cover 232 by means of a connecting rod, or may be in transmission connection with the shaft cover 232 by means of a sliding pair, which is not limited herein.
- FIG. 14 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the first transmission mechanism 234 further includes a sliding pair 2344 , through which the toggle member 2343 is in transmission connection with the shaft cover 232 .
- the sliding pair 2344 includes a second slot 2344a and a second sliding member 2344b.
- the second sliding slot 2344a is disposed on the shaft cover 232 .
- the structural forms of the second sliding member 2344b include but are not limited to sliders, sliding columns, rollers, rollers, rollers or rollers.
- the second sliding member 2344b is an eccentric block, eccentric column, eccentric wheel, eccentric shaft or eccentric circle relative to the rotation center of the second swing arm 2341.
- the second sliding member 2344b is disposed on the toggle member 2343 .
- the second sliding slot 2344a can also be disposed on the toggle member 2343
- the second sliding member 2344b is disposed on the shaft cover 232 .
- the second sliding member 2344b is slidably connected in the second slide groove 2344a. In this way, the toggle member 2343 is in driving connection with the shaft cover 232 by means of the sliding pair formed by the second sliding groove 2344a and the second sliding member 2344b.
- the toggle member 2343 can use the second sliding member 2344 b to push the second sliding slot 2344 a upwards, so that the shaft cover 232 moves upward along the direction b1.
- This structure is simple, and occupies less space and height, which is beneficial to the miniaturization and thinning of the rotating shaft mechanism 23 .
- the sliding pair 2344 in the above embodiment is not limited to being composed of a sliding groove and a sliding piece, but may also be composed of a guide rail and a sliding block, which is not specifically limited in the present application.
- first transmission mechanism 234 there are various structural forms of the first transmission mechanism 234.
- the following embodiments are all further introductions based on the first transmission mechanism 234 shown in FIG.
- FIG. 15 is a schematic structural diagram of a rotating shaft mechanism 23 provided in some other embodiments of the present application.
- the difference between the rotating shaft mechanism 23 in this embodiment and the rotating shaft mechanism 23 shown in FIG. 14 is that in this embodiment, the rotating shaft mechanism 23 further includes a door panel 235 and a second transmission mechanism 236 .
- the door panel 235 is located between the middle frame (including the main middle frame and the auxiliary middle frame) and the hinge base 231 .
- the door panel 235 is used to support part of the folding screen 10 , specifically, the door panel 235 is used to support the display areas 131 and 132 on both sides of the third display area 13 in the folding screen 10 in the folding screen device shown in FIG. 3 .
- the surface of the middle frame for setting the folding screen 10 the surface of the door panel 235 for setting the folding screen 10 and the surface of the hinge base 231 for setting the folding screen 10 are approximately coplanar.
- the door panel 235 is rotatably connected to the first swing arm 233 by means of the swivel pair 3 .
- the second transmission mechanism 236 is connected between the door panel 235 and the rotating shaft base 231 .
- the first swing arm 233 rotates from the unfolded position to the folded position along the direction a1
- the second transmission mechanism 236 by means of the second transmission mechanism 236, the end of the door panel 235 close to the shaft base 231 is driven to tilt to the side away from the folding screen relative to the end of the door panel 235 away from the shaft base 231.
- FIG. 16 is a schematic diagram of the structure of the hinge mechanism 23 shown in FIG.
- the included angle is the second included angle, and the first included angle is smaller than the second included angle.
- the rotation angle of the door panel 233 relative to the shaft base 231 is greater than the rotation angle of the middle frame relative to the shaft base 231 , and since the middle frame is fixed on the first swing arm 233 , the rotation angle of the middle frame relative to the shaft base 231 is equal to the rotation angle of the first swing arm 233 relative to the shaft base 231 . That is to say, the rotation angle of the door panel 233 relative to the rotating shaft base 231 is larger than the rotating angle of the first swing arm 233 relative to the rotating shaft base 231 .
- the rotation angle of the door panel 233 may be 100°, 105°, 102°, 110°, etc., which are not specifically limited herein.
- the third display area of the folding screen can be folded into a drop shape to reduce the inner folding angle, reduce the probability of creases on the folding screen, ensure the display effect of the folding screen, and prolong the service life of the folding screen.
- the second transmission mechanism 236 is a connecting rod connected between the door panel 235 and the rotating shaft base 231 .
- the second transmission mechanism 236 includes a door panel swing arm 2361 .
- the door panel swing arm 2361 is rotatably connected to the rotating shaft base 231 by means of the rotating pair 4 , the rotating axis of the rotating pair 4 is not collinear with the rotating axis of the rotating pair 1 .
- a third sliding slot 2351 is disposed on the door panel 235 , and the swing arm 2361 of the door panel can slide through the third sliding slot 2351 .
- the first swing arm 233 rotates along the direction a1 from the unfolded position to the folded position, it drives the door panel swing arm 2361 to rotate relative to the rotating shaft base 231 , and makes the door panel swing arm 2361 slide in the third chute 2351 .
- the rotation direction of the door panel swing arm 2361 is the same as that of the first swing arm 233 .
- the rotation angle of the door panel swing arm 2361 relative to the shaft base 231 is larger than the rotation angle of the first swing arm 233 relative to the shaft base 231 . That is, when the first swing arm 233 rotates from the unfolded position to the folded position, the rotation angle of the door panel 235 relative to the hinge base 231 is larger than the rotation angle of the first swing arm 233 relative to the hinge base 231.
- the third display area of the folding screen can be folded into a drop shape.
- the structure is simple, the occupied volume and height are small, and the volume and height of the rotating shaft mechanism can be reduced.
- FIG. 17 is a perspective view of the rotating shaft mechanism 23 provided by some embodiments of the present application.
- the hinge mechanism 23 is in an unfolded state.
- the shaft mechanism 23 includes a first shaft portion 23a, a second shaft portion 23b and a third shaft portion 23c.
- the first rotating shaft part 23a, the second rotating shaft part 23b, and the third rotating shaft part 23c are arranged in sequence along the length direction of the rotating shaft mechanism 23 (ie, the Y-axis direction).
- the specific structure of the first rotating shaft portion 23a will be firstly introduced below.
- Fig. 18 is an enlarged view of the area I of the shaft mechanism 23 shown in Fig. 17.
- the sub-middle frame B is hidden in Fig. 18, and
- Fig. 19 is a structural schematic diagram of the shaft mechanism 23 shown in Fig. 18 after hiding two door panels 235.
- the rotating shaft mechanism 23 includes a rotating shaft base 231, a shaft cover 232, a first swing arm 233, a second swing arm 2341, a toggle member 2343, a lift slider 232a, a door panel 235, a door panel swing arm 2361, a synchronous mechanism 237 and a damping mechanism 238.
- the rotating shaft base 231 , the shaft cover 232 , the first swing arm 233 , the second swing arm 2341 , the toggle member 2343 and the lifting slider 232 a form a shaft cover lifting system.
- the door panel 235 and the door panel swing arm 2361 form a door panel motion system.
- the rotating shaft base 231 provides a position reference. Please refer to FIG. 18 , the shaft base 231 has a supporting surface m1, and the supporting surface m1 is used to support part of the folding screen. Specifically, the supporting surface m1 is used to support the arc segment 133 of the third display area 13 in the folding screen 10 in the folding screen device shown in FIG. 3 .
- the rotating shaft base 231 can be a whole structural part, and can also be formed by assembling a plurality of parts.
- FIG. 20 is a perspective view of the rotating shaft base 231 in the rotating shaft mechanism 23 shown in FIG. 18 and FIG. 19
- FIG. 21 is an exploded view of the rotating shaft base 231 shown in FIG. 20 .
- the rotating shaft base 231 includes a base body 2311 and a first connecting member 2312 .
- the supporting surface m1 is disposed on the base body 2311 .
- first connectors 2312 there are two first connectors 2312, the two first connectors 2312 are located on the back side of the base body 2311, the two first connectors 2312 are arranged at intervals along the length direction of the rotating shaft base 231, and the two first connectors 2312 are fixed with the base body 2311, specifically, the two first connectors 2312 and the base body 2311 can be locked and fixed by screws. In some other embodiments, the two can also be fixed by clamping, welding and other means. In some other embodiments, the number of the first connecting member 2312 may also be one, three or more than three, which is not specifically limited in this embodiment.
- the two first connecting pieces 2312 and the base body 2311 form a first connecting portion 231 a, and the first connecting portion 231 a is used for rotatably connecting the first swing arm 233 .
- each first connecting part 2312 and the base body 2311 enclose two first connecting parts 231a on the left and right sides, and the two first connecting parts 2312 and the base main body 2311 enclose four first connecting parts 231a in total.
- first connecting parts 231a two first connecting parts 231a are located on the left side for rotatably connecting with the first swing arm 233 on the left side, and the other two first connecting parts 231a are located on the right side and are used for rotatably connecting with the first swing arm 233 on the right side.
- FIG. 22 is an assembly diagram of the cross section of the shaft base 231 at the line A-A shown in FIG. 20 and the first swing arm 233 .
- the first swing arm 233 is used for fixed connection with the main middle frame A, and the first swing arm 233 is rotatably connected in the arc-shaped slide slot.
- the first swing arm 233 has an arc-shaped sliding piece, and the arc-shaped sliding piece fits and is accommodated in the arc-shaped slide groove, thereby realizing a rotatable connection.
- FIG. 22 shows a schematic structural view of the hinge mechanism 23 in an unfolded state. Please refer to FIG. 23 .
- FIG. 23 is a schematic structural view of the hinge mechanism 23 shown in FIG.
- first connecting piece 2312 and the base main body 2311 can be positioned by the opposite sides of the rotating shaft portion of the first swing arm 233 (that is, the arc-shaped sliding piece), and then the first connecting piece 2312 and the base main body 2311 are fixed together, thereby realizing the assembly of the rotating shaft base 231 and the first swing arm 233.
- This assembly operation is simple and efficient.
- the first connection portions 231 a respectively connecting the first swing arms 233 on both sides are arranged at intervals along the length direction of the rotating shaft base 231 (that is, the Y-axis direction). In this way, the connecting parts of the two first swing arms 233 and the rotating shaft base 231 are dislocated along the Y-axis direction, which can reduce the width of the rotating shaft base 231 in the X-axis direction, thereby reducing the thickness of the folding screen device in the folded state.
- the rotating shaft base 231 further includes a second connecting member 2313 .
- the second connecting piece 2313 is located on the back side of the base body 2311 , the second connecting piece 2313 is located between the two first connecting pieces 2312 , and the second connecting piece 2313 is fixed to the base body 2311 .
- the second connecting member 2313 and the base body 2311 are locked and fixed by screws, and in some other embodiments, the two can also be fixed by clamping, welding and other methods.
- the two first connecting parts 2312 and the second connecting parts 2313 are arranged in sequence along the length direction of the rotating shaft base 231 (that is, the Y-axis direction).
- the second connecting piece 2313 is used for rotatably connecting the second swing arm 2341 and the toggle piece 2343. In this way, after the second swing arm 2341 and the toggle member 2343 are installed on the second connecting member 2313, then the second connecting member 2313 is fixed on the base body 2311, the assembling operation is simple and the efficiency is high.
- the second connecting member 2313 can be rotatably connected to the second swing arm 2341 and the toggle member 2343 in the following manner.
- the second connecting member 2313 is provided with a shaft sleeve 2313a, and a cylindrical shaft hole is disposed in the shaft sleeve 2313a.
- the number of bushings 2313a is four, wherein the two bushings 2313a on the left side are used to rotatably connect the second swing arm 2341 on the left side and the toggle piece 2343 fixed relatively to the second swing arm 2341 , and the two bushings 2313a on the right side are used to rotatably connect the second swing arm 2341 on the right side and the toggle piece 2343 fixed relatively to the second swing arm 2341 . Since the rotating shaft mechanism 23 has a left-right symmetrical structure, only the rotatable connection of the two shaft sleeves 2313a on the left side, the second swing arm 2341 and the toggle member 2343 will be described below.
- FIG. 24 is a schematic structural diagram of the toggle member 2343 in the rotating shaft mechanism 23 shown in FIG. 19 .
- the toggle member 2343 includes a shaft portion 2343a.
- the shaft portion 2343a includes a first section 2343a1 and a second section 2343a2, and a flat n is provided on the side of the first section 2343a1.
- the flats n are disposed on opposite sides of the first segment 2343a1.
- the flat position n may also be provided on one, three or four sides of the first segment 2343a1 in the circumferential direction, which is not specifically limited here.
- the cross section of the second section 2343a2 is circular. Please refer to FIG. 25 .
- FIG. 25 FIG.
- FIG. 25 is an assembly diagram of the toggle member 2343 shown in FIG. 24 and the second connecting member 2313 in the shaft base 231 shown in FIG. 21 .
- the rotating shaft portion 2343a of the toggle member 2343 passes through the two sleeves 2313a on the left side of the second connecting member 2313, and can rotate in the two sleeves 2313a.
- the toggle member 2343 also includes an eccentric protrusion.
- the eccentric protrusion is also the second sliding member 2344b in the rotating shaft mechanism 23 shown in FIG. 14 .
- the eccentric protrusion can also be replaced by an eccentric wheel, an eccentric roller, an eccentric roller, etc., which are not specifically limited here.
- FIG. 26 is a schematic structural diagram of the second swing arm 2341 in the rotating shaft mechanism 23 shown in FIG. 19 .
- the second swing arm 2341 is provided with a flat hole 2341a and a round hole 2341b.
- the shape and size of the flat hole 2341a is adapted to the cross-sectional shape and size of the first section 2343a1 of the toggle member 2343 shown in FIG.
- FIG. 27 which is an assembly diagram of the assembly structure shown in FIG. 25 and the second swing arm 2341 shown in FIG. 26 .
- the second swing arm 2341 is connected to the part of the rotating shaft part 2343a between the two bushings 2313a to limit the second swing arm 2341 through the two bushings 2313a.
- the arm 2341 is also sleeved on the second section 2343a2 through the circular hole 2341b.
- the rotation of the second swing arm 2341 relative to the toggle member 2343 may also be prevented by means of pin fixing, interference fit, etc., which are not specifically limited herein.
- the second swing arm 2341 and the toggle member 2343 are two structural parts independent of each other.
- the second swing arm 2341 and the toggle member 2343 can also be an integral structural member, that is, the second swing arm 2341 and the toggle member 2343 are integrally formed. In this way, the rotating shaft mechanism 23 includes fewer parts, less complicated structure and simpler structure.
- FIG. 28 is a schematic cross-sectional structure diagram of the rotating shaft mechanism 23 shown in FIG. 19 at line B-B.
- the first swing arm 233 is provided with a first sliding member 2342b
- the second swing arm 2341 is provided with a first sliding slot 2342a
- the first sliding member 2342b is slidably connected in the first sliding slot 2342a.
- the first sliding slot 2342a can be moved by the first sliding member 2342b, so that the second swinging arm 2341 rotates in the opposite direction to the direction a2, and at the same time, the first sliding member 2342b slides in the first sliding slot 2342a in the opposite direction to the direction a3.
- FIG. 29 is a schematic structural diagram of the hinge mechanism 23 shown in FIG. 28 when it is in a half-folded state.
- the half-folded state refers to the state of the rotating shaft mechanism 23 when the first swing arm 233 rotates from the unfolded position to the folded position by a certain angle, which is smaller than the angle of rotation to the folded position.
- FIG. 30 is a schematic structural view of the shaft cover 232 in the shaft mechanism 23 shown in FIG. 19 .
- the inner surface of the shaft cover 232 is provided with a lifting slider 232a.
- the inner surface of the shaft cover 232 refers to the surface of the shaft cover 232 facing the folding screen.
- the number of lifting sliders 232a is three, and the three lifting sliders 232a are respectively included in the first rotating shaft part 23a, the second rotating shaft part 23b, and the third rotating shaft part 23c in FIG. 17 .
- the lifting slider 232a and the shaft cover 232 can be two independent structural parts, or can be a whole structural part, that is, the two are integrally formed. In the embodiment shown in FIG.
- FIG. 31 is a schematic cross-sectional structure diagram of the shaft cover 232 shown in FIG. 30 at line C-C.
- the lifting slider 232a is provided with a second slide slot 2344a, and the second slide slot 2344a is used for sliding connection with the second slide piece 2344b on the toggle piece 2343 shown in FIG. 24 .
- FIG. 31 is a schematic cross-sectional structure diagram of the shaft cover 232 shown in FIG. 30 at line C-C.
- the lifting slider 232a is provided with a second slide slot 2344a, and the second slide slot 2344a is used for sliding connection with the second slide piece 2344b on the toggle piece 2343 shown in FIG. 24 .
- FIG. 31 is a schematic cross-sectional structure diagram of the shaft cover 232 shown in FIG. 30 at line C-C.
- the lifting slider 232a is provided with a second slide slot 2344a, and the second slide slot 2344a is used for sliding connection with the second slide piece 2344b on the toggle piece 2343 shown in FIG. 24
- FIG. 32 which is a schematic diagram of the assembly structure of the shaft cover 232 , the lifting slider 232 a and the second sliding member 2344 b on the toggle member 2343 shown in FIG. 31 .
- the eccentric protruding portion of the toggle member 2343 (that is, the first sliding member 2344b ) passes through the second sliding slot 2344a on the lifting slider 232a, and can slide along the second sliding slot 2344a.
- the toggle member 2343 follows the second swing arm 2341 and rotates along the direction a4, and the second chute 2344a can be moved with the help of the eccentric protrusion to drive the lifting slider 232a to move upward along the direction b1, while the eccentric protrusion slides in the second chute 2344a along the direction a5.
- the toggle member 2343 follows the second swing arm 2341 and rotates in the reverse direction of the direction a4.
- the lifting slider 232a is also provided with a limiting chute 2301
- the rotating shaft base 231 is provided with a limiting sliding member 2302 .
- the limiting sliding member 2302 can be disposed on the base body 2311 of the rotating shaft base 231 , and in some other embodiments, the limiting sliding member 2302 can also be disposed on the first connecting member 2312 or the second connecting member 2313 of the rotating shaft base 231 .
- the limiting sliding member 2302 is fitted in the limiting sliding groove 2301 and can slide up and down along the limiting sliding groove 2301 .
- the limit chute 2301 and the limit slider 2302 form sliding constraints to allow the shaft cover 232 to move up and down along the thickness direction of the rotating shaft base 231 (that is, the Z-axis direction), and prevent the shaft cover 232 from moving along a plane (that is, the XY plane) perpendicular to the thickness direction of the rotating shaft base 231 to prevent misalignment or jamming.
- the connecting part of the shaft cover 232 and the lifting slider 232a is located in the limiting chute 2301, and the position of the limiting slider 2302 corresponding to the connecting part is provided with an avoidance hole, and the connecting part is accommodated in the avoiding hole. As a result, the thickness of the rotating shaft mechanism 23 can be reduced.
- the setting positions of the limiting chute 2301 and the limiting sliding member 2302 can be interchanged, and the limiting chute 2301 and the limiting sliding member 2302 can be replaced by other sliding constraint components (such as guide rails and sliders), which are not specifically limited in this application.
- 232 Rising movement to compensate the segment difference between the shaft cover and the shell to avoid the exposure of the internal structure.
- the shaft cover 232 can be driven to move down by means of the first transmission mechanism, so as to realize reset.
- the structure of the first transmission mechanism is simple and easy to realize.
- the first transmission mechanism may also have other structural forms, and the specific description is as above, and details are not repeated here.
- FIG. 33 is a structural schematic diagram of the hinge mechanism 23 shown in FIG. 32 in a folded state. Comparing Fig. 32 and Fig. 33, it can be seen that when the shaft mechanism 23 rotates from the unfolded state shown in Fig. 32 to the folded state shown in Fig. 33, the shaft cover 232 rises to a certain height relative to the shaft base 231, and when the shaft mechanism 23 rotates from the folded state shown in Fig.
- FIG. 34 is a schematic cross-sectional structure diagram of the rotating shaft mechanism 23 shown in FIG. 18 at the folding line D-D.
- the hinge mechanism 23 is in the unfolded state, and the surface m3 of the main middle frame A for setting the folding screen, the surface m2 of the door panel 235 for setting the folding screen, and the surface m1 of the hinge base 231 for setting the folding screen are approximately coplanar.
- the connection forms of the door panels 235 on the left and right sides are the same.
- the door panel 235 is rotatably connected to the first swing arm 233 by means of the rotating pair 3 , and a third sliding slot 2351 is provided in the door panel 235 .
- the door panel swing arm 2361 is rotatably connected to the rotating shaft base 231 by means of the rotating pair 4 .
- the door panel swing arm 2361 is rotatably connected to the first connecting piece 2312 of the rotating shaft base 231 .
- the swing arm 2361 of the door panel is slidably disposed in the third slide slot 2351 .
- the first swing arm 233 rotates from the unfolded position to the folded position, it can drive the door panel swing arm 2361 to slide relative to the door panel 235 along the direction a6, and drive the end d1 of the door panel 235 close to the rotating shaft base 231 to tilt to the side away from the folding screen relative to the end d2 far away from the rotating shaft base 231.
- FIG. 35 is a schematic structural view of the hinge mechanism 23 shown in FIG. 18 when it is in the folded state.
- the angle between m2 and m1 is the first angle ⁇ 1
- the angle between m3 and m1 is the second angle ⁇ 2
- the first angle ⁇ 1 is smaller than the second angle ⁇ 2.
- the rotation angle of the door panel 235 relative to the shaft base 231 is greater than the rotation angle of the middle frame relative to the shaft base 231 , and since the middle frame is fixed on the first swing arm 233, the rotation angle of the middle frame relative to the shaft base 231 is equal to the rotation angle of the first swing arm 233 relative to the shaft base 231. That is to say, the rotation angle of the door panel 235 relative to the rotating shaft base 231 is larger than the rotating angle of the first swing arm 233 relative to the rotating shaft base 231 .
- the rotation angle of the door panel 235 may be 100°, 105°, 102°, 110°, etc., which are not specifically limited herein.
- the third display area of the folding screen can be folded into a drop shape to reduce the inner folding angle, reduce the probability of creases on the folding screen, ensure the display effect of the folding screen, and prolong the service life of the folding screen.
- the door panel swing arm 2361 forms the second transmission mechanism.
- the first swing arm 233 rotates from the unfolded position to the folded position, by means of the second transmission mechanism, one end b1 of the door panel 235 close to the hinge base 231 can be driven to tilt away from the side of the folding screen relative to the end b2 away from the hinge base 231 to form a drop-shaped folding screen structure;
- One end b2 of 231 is inclined to the side away from the folding screen, so that m1, m2 and m3 are approximately coplanar, so that the folding screen remains flat.
- the above-mentioned second transmission mechanism may have other structural forms, and the specific description is as above, and details are not repeated here.
- each part includes a shaft base 231, a shaft cover 232, a first swing arm 233, a second swing arm 2341 (attached toggle piece 2343), a door panel 235 and a door panel swing arm 2361.
- a total of six parts (M) the shaft mechanism 23 is between the unfolded state and the folded state During the movement, the movement mode of these six parts is unique, and the stability is better.
- the function of the synchronous mechanism 237 is: among the two first swing arms 233, when any one of the first swing arms 233 rotates from the expanded position to the folded position, the synchronous mechanism 237 can drive the other first swing arm 233 to rotate synchronously from the expanded position to the folded position. Similarly, when any one of the first swing arms 233 rotates from the folded position to the unfolded position, the synchronization mechanism 237 can also be used to drive the other first swing arm 233 to rotate synchronously from the folded position to the unfolded position.
- the rotation angles of the two first swing arms 233 when the two first swing arms 233 rotate synchronously, the rotation angles of the two first swing arms 233 also keep the same. It can be understood that due to manufacturing or assembly tolerances, the two first swing arms 233 may have a certain angle deviation during the rotation process. Therefore, in general, when the two first swing arms 233 rotate from the unfolded position to the folded position, the deviation range of the rotation angle is between 0° and 20°, and it can be considered that the rotation angles of the two are consistent. In this way, the synchronous rotation of the two first swing arms 233 at the same angle can be realized by means of the synchronization mechanism, so as to reduce the difficulty of folding and unfolding the folding screen device.
- the synchronization mechanism 237 is arranged between any two symmetrical moving structures, which can drive the shaft cover lifting system and the door panel movement system on both sides to move synchronously.
- the synchronization mechanism 237 can indirectly drive the two first swing arms 233 to rotate synchronously by means of the shaft cover lifting system.
- the synchronization mechanism 237 is connected between the two door panel swing arms 2361, it can also indirectly drive the two first swing arms 233 to rotate synchronously by means of the above door panel motion system.
- the synchronization mechanism 237 is connected between the two second swing arms 2341 , and the space between the two second swing arms 2341 is sufficient to facilitate the installation of the synchronization mechanism 237 .
- the synchronizing mechanism 237 includes an even number of transmission gears (not shown in the figure) that are meshed in sequence.
- the number of the transmission gears can be 2, 4, 6 and so on.
- the even-numbered transmission gears include a first transmission gear and a second transmission gear respectively located at the front and rear positions, and the first transmission gear and the second transmission gear are respectively used to be relatively fixed to the two second swing arms 2341, and the central axis of the first transmission gear and the central axis of the second transmission gear are collinear with the rotation axes of the two second swing arms 2341 respectively.
- the two second swing arms 2341 can be driven to swing synchronously through the meshing transmission of the even number of transmission gears.
- This structure is simple and easy to implement, and the more transmission gears are designed, the smaller the height of the transmission gears in the Z-axis direction can be designed, which is more conducive to the thinning of the shaft mechanism 23.
- the greater the number of transmission gears the higher the structural complexity, the smaller the volume of the transmission gears, and the greater the processing difficulty. Therefore, according to different design requirements, the thinning, structural complexity and processing difficulty of the rotation shaft mechanism 23 can be comprehensively considered to select different numbers of transmission gears.
- FIG. 36 is an exploded view of the synchronization mechanism 237, the second connecting member 2313, the second swing arm 2341, and the toggle member 2343 in the shaft mechanism 23 shown in FIG.
- the synchronization mechanism 237 includes a transmission slider 2371 .
- the transmission slider 2371 is located between the second swing arms 2341 of the two first transmission mechanisms.
- the transmission slider 2371 is located between the base body 2311 and the second connecting member 2313 in the rotating shaft base 231 shown in FIG. 21 .
- the transmission slider 2371 is slidably connected to the rotating shaft base 231 along the length direction of the rotating shaft base (that is, the Y-axis direction).
- the rotating shaft portion 2343a of the driving member 2343 is passed through the bushing of the second connecting member 2313 in the rotating shaft base, and can rotate in the bushing.
- a shaft sleeve 2371a is provided on the transmission slider 2371 .
- the number of bushings 2371a is four.
- the two bushings 2371a on the left are socketed with the second section 2343a2 of the shaft part 2343a in the left shifting member 2341 and can slide along the second section 2343a2.
- the second section 2343a2 of the rotating shaft part 2343a in the toggle member 2343 is used as a sliding guide rail, and the transmission slider 2371 is slidably connected to the sliding guide rail through the bushing 2371a, thereby realizing the slidable connection between the transmission slider 2371 and the rotating shaft base.
- This structure is simple, and no special sliding guide rail is required, so the structural complexity of the rotating shaft mechanism 23 can be reduced.
- the number of shaft sleeves 2371a provided on the transmission slider 2371 can also be other numbers, which are not specifically limited here.
- the sliding connection between the transmission slider 2371 and the rotating shaft base can also be adopted in other ways, which is not specifically limited in this application.
- the transmission slider 2371 is connected with the transmission of the two second swing arms 2341, so that: when any second swing arm 2341 of the two second swing arms 2341 rotates from the unfolded position to the folded position along the direction a2, it can drive the transmission slider 2371 to slide along the direction a7 (consistent with the direction of the Y axis), and drive the other second swing arm 2341 to rotate synchronously from the unfolded position to the folded position along the direction a2; on the contrary, the two second swing arms 234 In 1, when any second swing arm 2341 rotates from the folded position to the unfolded position in the direction opposite to the direction a2, it can drive the transmission slider 2371 to slide in the direction opposite to the direction a7 (that is, the direction opposite to the Y-axis direction, that is, the -Y-axis direction), and drives the other second swing arm 2341 to rotate synchronously from the folded position to the unfolded position along the direction opposite to the direction a
- the unfolded position of the second swing arm 2341 refers to the position of the second swing arm 2341 when the shaft mechanism 23 is in the unfolded state
- the folded position of the second swing arm 2341 refers to the position of the second swing arm 2341 when the shaft mechanism 23 is in the folded state.
- the two first swing arms in the shaft mechanism 23 can be indirectly driven to rotate synchronously.
- the synchronous mechanism 237 occupies a relatively small height in the Z-axis direction, which can reduce the thickness of the rotating shaft mechanism 23, which is beneficial to the thinning of the folding screen device.
- the transmission connection mode between the transmission slider 2371 and the second swing arm 2341 includes but is not limited to a structural transmission connection composed of a screw rod and a nut, a structural transmission connection composed of a spiral chute and a slider, or a structural transmission connection composed of a worm wheel and a worm, which is not specifically limited here.
- the second swing arm 2341 is provided with a spiral sliding groove 2372
- the transmission slider 2371 is provided with a sliding block 2373 .
- the positions of the spiral chute 2372 and the sliding block 2373 can be interchanged, that is, the spiral chute 2372 is disposed on the transmission slider 2371
- the sliding block 2373 is disposed on the second swing arm 2341 .
- the centerline of the helical extension path of the helical sliding groove 2372 is parallel to the slidable direction (ie, the Y-axis direction) of the transmission slider 2371 .
- the slider 2373 is slidably disposed in the helical chute 2372 , that is, the slider 2373 is disposed in the helical chute 2372 , and the slider 2373 can slide along the extending direction of the helical chute 2372 .
- the transmission slider 2371 can be driven to slide along the direction a7 by means of the spiral slide groove 2372 on the second swing arm 2341, and the other second swing arm 2341 can be driven to rotate synchronously from the unfolded position to the folded position along the direction a2 by means of the slider 2373 on the transmission slider 2371.
- the transmission slider 2371 can be driven to slide in the opposite direction to the direction a7 by means of the spiral chute 2372 on the second swing arm 2341, and the other second swing arm 2341 can be driven to rotate synchronously from the folded position to the unfolded position in the opposite direction to the direction a2 by means of the slider 2373 on the transmission slider 2371.
- the transmission connection between the transmission slider 2371 and the second swing arm 2341 is through a structure composed of a spiral chute and a slider. This structure is simple and occupies less space, which is beneficial to the compact design of the rotating shaft mechanism.
- the function of the damping mechanism 238 is: when the first swing arm 233 rotates relative to the rotating shaft base 231 , apply a damping force to the first swing arm 233 to prevent the first swing arm 233 from rotating.
- the folding screen device can be kept at a certain, certain or arbitrary opening angle positions, so as to ensure the structural stability of the folding screen device at these opening angle positions.
- damping mechanism 2348 there are various structural forms of the damping mechanism 238, such as using lateral friction plates to provide damping force, or using the tension force between the special-shaped rotating shaft and the shaft sleeve to provide damping force, or using elastic materials such as rubber and silica gel installed between the rotating shaft and the shaft sleeve to provide damping force, which is not specifically limited in this application.
- the damping mechanism 238 can prevent the entire mechanism from moving at any kinematic pair position.
- the position of the sliding pair between the member 2343 and the shaft cover 232, or the connection position of each kinematic pair provided in the door panel kinematic system is not specifically limited here.
- the damping mechanism 238 is disposed on the sliding pair of the first swing arm 233 and the second swing arm 2341 as an example for illustration, which should not be regarded as a special limitation to the present application.
- Fig. 38 is an assembly diagram of the damping mechanism 238, the first swing arm 233, and the second swing arm 2341 in the shaft mechanism 23 shown in Fig. 19, and Fig. 39 is an exploded view of the damping mechanism 238, the first swing arm 233, and the second swing arm 2341 in the shaft mechanism 23 shown in Fig. 38.
- the following embodiments are described with the damping mechanism 238 connected between the first swing arm 233 and the second swing arm 2341 on the left as an example.
- one end surface of the first slide slot 2342a on the second swing arm 2341 along the length direction of the rotating shaft base 231 is a friction surface 2341c.
- the first chute 2342a described in this embodiment does not refer to the non-substantial chute space on the second swing arm 2341, but refers to the whole composed of the non-substantial chute space on the second swing arm 2341 and the solid side wall surrounding the chute space, and the friction surface 2341c is arranged on the solid side wall surrounding the chute space.
- the damping mechanism 238 is connected to the first sliding member 2342b, and when the first sliding member 2342b slides along the first slide groove 2342a, it can drive the damping mechanism 238 to move along the friction surface 2341c.
- the damping mechanism 238 includes a friction member 2381 and an elastic member 2382 .
- the friction member 2381 and the elastic member 2382 of the damping mechanism 238 are both sleeved on the first sliding member 2342b.
- the elastic member 2382 of the damping mechanism 238 may be fixed on the first sliding member 2342b, which is not specifically limited in the present application.
- the friction member 2381 is located on the side facing the friction surface 2341c, and the elastic member 2382 is used to apply an elastic force directed to the friction surface 2341c to the friction member 2381, so that the friction member 2381 abuts against the friction surface 2341c.
- abutting means that the two are in contact with each other and have a certain pressing force between them.
- a friction force is generated between the friction member 2381 and the friction surface 2341c, and the friction force forms a damping force for preventing the first sliding member 2342b from sliding relative to the first sliding groove 2342a, thereby preventing the first swing arm 233 from rotating relative to the shaft base.
- the elastic member 2382 may be elastic materials such as coil springs, rubber or silicone.
- the elastic member 2382 is a coil spring.
- the coil spring has greater elasticity, better stability and longer life, which can ensure the structural stability of the rotating shaft mechanism 23 and prolong the service life.
- the friction surface 2341c is a cam surface, and the cam surface includes a first bottom region 2341c1, an ascending region 2341c2, a top region 2341c3, a descending region 2341c4 and a second bottom region 2341c5 arranged in sequence along the length direction of the first chute 2342a.
- the friction member 2381 is in contact with the first bottom area 2341c1.
- the friction member 2381 abuts against the friction surface 2341c, and slides along the ascending region 2341c2, the top region 2341c3, and the descending region 2341c4 in sequence.
- the friction member 2381 and the friction surface 2341c generate a damping force to prevent them from sliding relative to each other.
- the friction member 2381 contacts the second bottom region 2341c5.
- the rotating shaft mechanism 23 rotates between the unfolded state and the folded state, it needs to overcome the damping force generated by the friction member 2381 and the friction surface 2341c.
- the rotating shaft mechanism 23 can remain in the unfolded state and the folded state, which is consistent with the user's usage habits.
- the number of the first sliding slots 2342a is two, the two first sliding slots 2342a are arranged at intervals along the Y-axis direction and relatively fixed, and the friction surfaces 2341c of the two first sliding slots 2342a are oppositely arranged.
- the damping mechanism 238 is disposed between the two first slide grooves 2342a, the number of the friction members 2381 is two, the elastic member 2382 is located between the two friction members 2381, and the elastic member 2382 exerts an elastic force directed to the corresponding friction surfaces 2341c to the two friction members 2381 at the same time, so that the two friction members 2381 contact the corresponding friction surfaces 2341c respectively.
- the above embodiments have introduced the first rotating shaft part 23a of the rotating shaft mechanism 23 shown in FIG. 17, and the structure of the third rotating shaft part 23c is the same as that of the first rotating shaft part 23a, and will not be repeated here.
- the structure of the second shaft part 23b is different from that of the first shaft part 23a and the third shaft part 23c, and the first shaft part 23a, the second shaft part 23b and the third shaft part 23c share the same shaft base 231.
- Fig. 40 is a schematic structural diagram of area II in the rotating shaft mechanism 23 shown in Fig. 17.
- the door panel 235 is hidden in this drawing.
- the rotating shaft base 231 also includes a third connecting member 2314 .
- the third connecting member 2314 is fixed to the base body 2311 .
- a shaft sleeve 2314a is disposed on the third connecting member 2314, and a cylindrical shaft hole is disposed in the shaft sleeve 2314a.
- the number of sleeves 2314a is four. Among the four shaft sleeves 2314a, the two shaft sleeves 2314a on the left are arranged coaxially with the two shaft sleeves 2313a on the left side of the second connector 2313 in the shaft base 231 shown in FIG.
- the second shaft portion 23 b also includes a second swing arm 2341 and a toggle member 2343 .
- the second swing arm 2341 and the toggle member 2343 in the second shaft portion 23b are approximately the same as the second swing arm 2341 and the toggle member 2343 in the first shaft portion 23a respectively.
- the shaft portion 2343a of the shifting member 2343 on the left is sleeved in the two shaft sleeves 2314a on the left side of the third connecting member 2314, and can rotate in the two shaft sleeves 2314a; Turn within 4a.
- the side surface of the rotating shaft part 2343a is provided with a flat position n.
- the second swing arm 2341 is provided with a flat hole 2341a, and the shape and size of the flat hole 2341a are adapted to the cross-sectional shape of the rotating shaft portion 2343a.
- the second swing arm 2341 on the left side is set between the two bushings 2314a on the left side of the third connecting member 2314, and is sleeved on the shaft portion 2343a of the left shifting member 2343 through the flat hole 2341a; On the rotating shaft part 2343a of the right toggle piece 2343. In this way, relative fixing of the toggle member 2343 and the second swing arm 2341 is achieved.
- the second swing arm 2341 is provided with a first sliding slot 2342a.
- the middle frame is provided with a first sliding member (not shown in the figure), and the first sliding member is slidably connected in the first slide groove 2342a.
- the shaft cover 232 is provided with a lifting slider 232a, and the lifting slider 232a is provided with a second chute 2344a. Please refer to FIG. 42 and FIG. 43.
- FIG. The piece 2344b) is disposed in the second sliding groove 2344a and can slide along the second sliding groove 2344a.
- the first sliding groove 2342a can be moved by means of the first sliding member on the middle frame, so that the second swing arm 2341 in the second rotating shaft part 23b rotates along the direction a2.
- the toggle member 2343 rotates accordingly, so as to further move the second sliding groove 2344a by means of the eccentric protrusion, so as to drive the shaft cover 232 to rise .
- the first slide slot 2342a can be moved by means of the first sliding member on the middle frame, so that the second swing arm 2341 in the second shaft part 23b rotates in the opposite direction of direction a2.
- the toggle member 2343 rotates accordingly, so as to further press the second slide slot 2344a by means of the eccentric protrusion to drive the shaft cover 232 down.
- the above-mentioned second rotating shaft part 23b is also provided, and the above-mentioned second rotating shaft part 23b is used to play an auxiliary supporting role for the lifting of the shaft cover 232, so that each part of the shaft cover 232 along its length direction can be lifted and lowered synchronously, and the stability of lifting is improved.
- the structure of the second rotating shaft part 23 b is simple, which can simplify the structural complexity of the rotating shaft mechanism 23 .
- the second shaft part 23b can also have other structural forms, for example, the structural form of the second shaft part 23b is the same as that of the first shaft part 23a and the third shaft part 23b, which is not specifically limited in this application.
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Abstract
本申请提供一种转轴机构、支撑装置和折叠屏设备,涉及折叠屏设备技术领域,用于解决如何在不影响折叠屏设备薄型化的同时,避免内部运动部件外露的问题。其中,转轴机构包括转轴基座、轴盖、第一摆臂和第一传动机构。轴盖位于转轴基座的背侧。第一摆臂可转动连接于转轴基座上,且第一摆臂能够相对于转轴基座在展开位置与折叠位置之间转动。第一传动机构连接于第一摆臂与轴盖之间,第一摆臂在由展开位置向折叠位置转动时,借助第一传动机构,带动轴盖朝向转轴基座运动。本申请提供的转轴机构用于实现折叠屏的折叠。
Description
本申请要求于2022年01月18日提交国家知识产权局、申请号为202210057046.1、发明名称为“一种终端设备的转轴机构***方案”的中国专利申请的优先权,以及于2022年04月08日提交国家知识产权局、申请号为202210366979.9、发明名称为“一种转轴机构、支撑装置和折叠屏设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及折叠屏设备技术领域,尤其涉及一种转轴机构、支撑装置和折叠屏设备。
目前,为了解决传统平板终端尺寸大、不方便携带等问题,折叠屏设备应运而生。折叠屏设备包括两侧壳体以及连接于两侧壳体之间的转轴机构。转轴机构内,轴盖覆盖于转轴机构内转轴基座以及运动部件的背侧。折叠屏设备在折叠或者展开过程中,两侧壳体与轴盖之间相互搭接,用以保持折叠屏设备的外观。但是随着折叠屏设备向薄型化方向发展,两侧壳体与轴盖之间的搭接量不足,导致折叠屏设备在处于折叠状态时,两侧壳体与轴盖分离,内部运动部件裸露在外,影响折叠屏设备的品质和外观。
发明内容
本申请实施例提供一种转轴机构、支撑装置和折叠屏设备,用于解决如何在不影响折叠屏设备薄型化的同时,避免内部运动部件外露的问题。
为达到上述目的,本申请的实施例采用如下技术方案:
第一方面,提供了一种转轴机构,该转轴机构包括转轴基座、轴盖、第一摆臂和第一传动机构。轴盖位于转轴基座的背侧。第一摆臂可转动连接于转轴基座上,且第一摆臂能够相对于转轴基座在展开位置与折叠位置之间转动。第一传动机构连接于第一摆臂与轴盖之间,第一摆臂在由展开位置向折叠位置转动时,借助该第一传动机构,带动轴盖朝向转轴基座运动。
本申请实施例提供的转轴机构除了包括轴盖和转轴基座之外,还包括第一摆臂和第一传动机构,第一摆臂用于与中框固定,当用户对折叠屏设备的中框进行折叠时,第一摆臂为主动件。第一传动机构连接于第一摆臂与轴盖之间。当第一摆臂在由展开位置向折叠位置转动时,借助第一传动机构,可以带动轴盖上升运动。在本申请实施例所述转轴机构处于展开状态时的厚度与现有技术中转轴机构的厚度相等的前提下,当折叠屏终端处于折叠状态时,轴盖相对于转轴基座上升一定高度,上升后的轴盖可以在一定程度上补偿轴盖与中框的搭接部之间的间隙,降低内部转轴基座以及连接于转轴基座上的运动部件外露的风险。由此在不影响折叠屏设备薄型化的同时,避免了内部运动部件外露。
在第一方面的一种可能的实现方式中,第一传动机构包括第二摆臂。第二摆臂可转动连接于转轴基座上,第一摆臂与第二摆臂传动连接,第二摆臂与轴盖传动连接。 第一摆臂在由展开位置向折叠位置转动时,带动第二摆臂相对于转轴基座转动,并进一步借助第二摆臂带动轴盖朝向转轴基座运动。这样一来,借助第二摆臂将第一摆臂的旋转运动传递至轴盖,以使轴盖上升,且第二摆臂受转轴基座上转动副的位置约束,因此传动的稳定性较优。
在第一方面的一种可能的实现方式中,第一传动机构包括第一滑槽和第一滑动件。第一滑槽和第一滑动件中的一个设置于第一摆臂上,第一滑槽和第一滑动件中的另一个设置于第二摆臂上,第一滑动件滑动连接于第一滑槽内。第一摆臂借助第一滑槽和第一滑动件组成的滑动副与第二摆臂传动连接。此结构简单,且占用空间及高度较小,有利于转轴机构的体积小型化和厚度薄型化。
在第一方面的一种可能的实现方式中,第一摆臂在由展开位置转动至折叠位置时,带动第二摆臂相对于转轴基座的转动角度小于第一摆臂相对于转轴基座的转动角度。这样一来,借助第二摆臂减小了传动角度,相比于采用第一摆臂直接带动轴盖上升运动的方案,采用转动角度较小的第二摆臂带动轴盖上升运动的高度较小,有利于减小转轴机构在处于展开状态时的整体高度,从而有利于折叠屏设备在展开状态下的薄型化。
在第一方面的一种可能的实现方式中,第二摆臂与转轴基座的转动轴线为第一轴线;第一滑槽具有第一端和第二端,第一端至所述第一轴线的距离小于第二端至第一轴线的距离;当主摆臂处于展开位置时,第一端至折叠屏的垂直距离大于第二端至折叠屏的垂直距离,且当主摆臂由展开位置向折叠位置转动时,第一滑动件沿第一滑槽由第一端向第二端滑动。这样一来,第一摆臂在由展开位置转动至折叠位置时,带动第二摆臂相对于转轴基座的转动角度小于第一摆臂相对于转轴基座的转动角度。
在第一方面的一种可能的实现方式中,第一传动机构还包括拨动件。拨动件与第二摆臂相对固定,第二摆臂借助拨动件与轴盖传动连接。这样一来,第一摆臂在带动第二摆臂相对于转轴基座转动的同时,还带动拨动件相对于转轴基座转动,以进一步借助拨动件带动轴盖上升运动。本实施例中,第二摆臂和拨动件组成的整体中,传动连接第一摆臂的端部布局在第二摆臂上,传动连接轴盖的端部布局在拨动件上,避免出现传动连接第一摆臂的端部以及传动连接轴盖的端部集中布局在第二摆臂的情况,能够减小第二摆臂的结构复杂度。
在第一方面的一种可能的实现方式中,第二摆臂传动连接第一摆臂的端部至第二摆臂的转动中心的距离为第一距离;拨动件传动连接轴盖的端部相对于第二摆臂的转动中心偏心设置,且拨动件传动连接轴盖的端部至第二摆臂的转动中心的距离为第二距离;第一距离小于第二距离。这样一来,在拨动件的转动角度与第二摆臂的转动角度相同的前提下,借助拨动件减小了摆臂的长度,从而减小了拨动件所能够带动的轴盖的上升高度,有利于减小转轴机构在轴盖处于展开状态时的整体高度,从而有利于折叠屏设备在展开状态下的薄型化。
在第一方面的一种可能的实现方式中,第一传动机构还包括第二滑槽和第二滑动件。第二滑槽和第二滑动件中的一个设置于拨动件上,第二滑槽和第二滑动件中的另一个设置于轴盖上,第二滑动件滑动连接于第二滑槽内。拨动件借助第二滑槽和第二滑动件组成的滑动副与轴盖传动连接。此结构简单,且占用空间及高度较小,有利于 转轴机构的体积小型化和厚度薄型化。
在第一方面的一种可能的实现方式中,转轴机构还包括门板和第二传动机构。门板可转动连接于第一摆臂上,第二传动机构连接于门板与转轴基座之间。第一摆臂在由展开位置向折叠位置转动时,借助第二传动机构,带动门板靠近转轴基座的一端相对于门板远离转轴基座的一端向远离折叠屏的一侧倾斜。这样一来,当第一摆臂转动至折叠位置时,门板上用于设置折叠屏的表面与转轴基座上用于设置折叠屏的表面之间的夹角为第一夹角,中框上用于设置折叠屏的表面与转轴基座上用于设置折叠屏的表面之间的夹角为第二夹角,第一夹角小于第二夹角。换句话说,也即是,在第一摆臂由展开位置转动至折叠位置时,门板相对于转轴基座的转动角度大于中框相对于转轴基座的转动角度,由于中框固定于第一摆臂上,因此中框相对于转轴基座的转动角度与第一摆臂相对于转轴基座的转动角度相等。也就是说,门板相对于转轴基座的转动角度大于第一摆臂相对于转轴基座的转动角度。这样一来,可以将折叠屏的第三显示区域折叠成水滴状,以减小内折角,降低折叠屏出现折痕的概率,保证折叠屏的显示效果,延长折叠屏的使用寿命。
在第一方面的一种可能的实现方式中,第二传动机构包括门板摆臂,该门板摆臂可转动连接于转轴基座上。门板上设置有第三滑槽,门板摆臂可滑动穿设于第三滑槽内,第一摆臂在由展开位置转动至折叠位置时,带动门板摆臂相对于转轴基座的转动角度大于第一摆臂相对于转轴基座的转动角度。
在第一方面的一种可能的实现方式中,第一摆臂的数量为两个,两个第一摆臂对称设置于转轴基座的相对两侧;转轴机构还包括同步机构;两个第一摆臂中,任意一个第一摆臂在由展开位置向折叠位置转动时,借助该同步机构,带动另一个第一摆臂由展开位置向折叠位置同步转动。这样一来,借助同步机构可以实现两个第一摆臂的同步同角度转动,以降低折叠屏设备的折叠和展开难度。
在第一方面的一种可能的实现方式中,同步机构连接于两个主摆臂之间。
在第一方面的一种可能的实现方式中,第一传动机构的数量为两个,两个第一传动机构分别连接于两个第一摆臂与轴盖之间;同步机构连接于两个第一传动机构的第二摆臂之间。两个第二摆臂之间的空间富裕,便于安装该同步机构。
在第一方面的一种可能的实现方式中,同步机构连接于两个门板摆臂之间。
在第一方面的一种可能的实现方式中,同步机构包括偶数个依次啮合的传动齿轮。具体的,该传动齿轮的数量可以为2个、4个、6个等等。该偶数个传动齿轮包括分别位于首尾位置的第一传动齿轮和第二传动齿轮,该第一传动齿轮和第二传动齿轮分别用于与两个第二摆臂相对固定,且该第一传动齿轮的中心轴线和第二传动齿轮的中心轴线分别与两个第二摆臂的转动轴线共线。由此通过该偶数个传动齿轮啮合传动,可以带动两个第二摆臂同步摆动。此结构简单,实现方便,且设计的传动齿轮数量越多,传动齿轮的高度可以设计得越小,越有利于实现转轴机构的厚度薄型化,但是传动齿轮的数量越多,结构复杂度越高,传动齿轮的体积越小,加工难度越大,因此可以根据不同的设计需求,综合考虑转轴机构的薄型化、结构复杂度和加工难度,以选择不同数量的传动齿轮。
在第一方面的一种可能的实现方式中,同步机构包括传动滑块,传动滑块位于两 个第一传动机构的第二摆臂之间;传动滑块沿转轴基座的长度方向与转轴基座可滑动连接,且传动滑块与两个第一传动机构的第二摆臂传动连接;两个第一传动机构的第二摆臂中,任意一个第二摆臂在由展开位置向折叠位置转动时,驱动传动滑块沿转轴基座的长度方向滑动,并带动另一个第二摆臂由展开位置向折叠位置同步转动。此同步机构的占用高度较小,能够减小转轴机构的厚度,有利于折叠屏设备的薄型化。
在第一方面的一种可能的实现方式中,传动滑块上设有螺旋滑槽和滑块中的一个,第二摆臂上设有螺旋滑槽和滑块中的另一个;螺旋滑槽的螺旋延伸路径的中心线与传动滑块的可滑动方向平行,滑块可滑动设置于螺旋滑槽内。此传动滑块与第二摆臂的传动连接方式为借助螺旋滑槽和滑块组成的结构传动连接,此结构简单,占用空间较小,有利于转轴机构的结构紧凑化设计。
在第一方面的一种可能的实现方式中,传动滑块与第二摆臂的传动连接方式包括但不限于借助丝杆和螺母组成的结构传动连接或者借助蜗轮和蜗杆组成的结构传动连接。
在第一方面的一种可能的实现方式中,转轴机构还包括阻尼机构;阻尼机构用于在第一摆臂相对于转轴基座转动时,向第一摆臂施加阻尼力,以阻止第一摆臂转动。这样一来,可以使折叠屏设备保持在某一个、某多个或者任意打开角度位置,以保证折叠屏设备处于这些打开角度位置时的结构稳定性。
在第一方面的一种可能的实现方式中,阻尼机构设置于第一摆臂与转轴基座之间,或者,所述阻尼机构设置于第一滑槽与第一滑动件之间,或者,阻尼机构设置于第二摆臂与转轴基座之间,或者,阻尼机构设置于第二滑槽与第二滑动件之间,或者,阻尼机构设置于第三滑槽与所述门板摆臂之间,或者,阻尼机构设置于门板与所述第一摆臂之间。
在第一方面的一种可能的实现方式中,第一滑槽沿所述转轴基座的长度方向的一端端面为摩擦面;阻尼机构与第一滑动件连接,第一滑动件在沿第一滑槽滑动时,带动阻尼机构沿摩擦面移动;阻尼机构包括摩擦件和弹性件,摩擦件位于摩擦面所朝向的一侧,弹性件用于向摩擦件施加指向摩擦面的弹性力,以使摩擦件与摩擦面抵接。此结构简单,容易实现。
在第一方面的一种可能的实现方式中,摩擦面为凸轮面,凸轮面包括沿第一滑槽的长度方向依次设置的第一底部区域、上升区域、顶部区域、下降区域和第二底部区域;当第一摆臂处于展开位置时,摩擦件与第一底部区域接触;当第一摆臂由展开位置向折叠位置转动时,摩擦件与摩擦面抵接,并依次沿上升区域、顶部区域、下降区域滑动;当第一摆臂处于折叠位置时,摩擦件与第二底部区域接触。这样一来,转轴机构在展开状态与折叠状态之间转动时,需要克服摩擦件与摩擦面产生阻尼力,在无外力作用时,转轴机构可以保持在展开状态和折叠状态,与用户使用习惯相符合。
在第一方面的一种可能的实现方式中,第一滑槽的数量为两个,两个第一滑槽沿转轴基座的长度方向间隔设置且相对固定,两个第一滑槽的摩擦面相对设置;阻尼机构设置于两个第一滑槽之间,摩擦件的数量为两个,弹性件位于两个摩擦件之间,弹性件同时向两个摩擦件施加指向对应的摩擦面的弹性力,以使两个摩擦件分别与对应的摩擦面抵接。这样一来,转轴机构在展开状态与折叠状态之间转动时,阻尼机构产 生的阻尼力较大,需要施加的驱动力较大,转轴机构能够稳定保持在展开状态或者折叠状态,由此提高了转轴机构的使用稳定性。
在第一方面的一种可能的实现方式中,第一摆臂在由折叠位置向展开位置转动时,借助第一传动机构,可以带动轴盖远离转轴基座运动。这样,可以实现复位,以不影响下一次折叠时轴盖的上升运动。
在第一方面的一种可能的实现方式中,轴盖与转轴基座之间设有限位结构,该限位结构允许轴盖沿着转轴基座的厚度方向朝向或者远离转轴基座移动,阻止轴盖沿着与转轴基座的厚度方向垂直的平面运动。这样一来,借助限位结构限位,可以保证轴盖上升或下降运动的稳定性,防止轴盖相对于转轴基座产生错位而无法包覆转轴基座以及连接于转轴基座上的运动机构。
第二方面,提供了一种支撑装置,该支撑装置包括第一壳体、第二壳体和如上任一技术方案所述的转轴机构;转轴机构的第一摆臂的数量为两个,两个第一摆臂对称设置于转轴基座的相对两侧,两个第一摆臂分别与第一壳体、第二壳体固定。
由于本申请实施例提供的支撑装置包括如上任一技术方案所述的转轴机构,因此二者能够解决相同的技术问题并达到相同的效果,在此不做赘述。
第三方面,提供了一种折叠屏设备,该折叠屏设备包括折叠屏和如上技术方案所述的支撑装置;折叠屏包括第一显示区域、第二显示区域和第三显示区域,第三显示区域连接于第一显示区域与第二显示区域之间;第一显示区域设置于第一壳体上,第二显示区域设置于第二壳体上;第三显示区域设置于转轴机构上。
由于本申请实施例提供的折叠屏设备包括如上技术方案所述的转轴机构,因此二者能够解决相同的技术问题并达到相同的效果,在此不作赘述。
图1为本申请一些实施例提供的折叠屏设备在展开状态下的立体图;
图2为图1所示折叠屏设备的局部分解结构示意图;
图3为图1所示折叠屏设备处于折叠状态时的结构示意图;
图4为本申请一些实施例提供的折叠屏设备在展开状态下内部主中框、副中框、转轴机构和折叠屏的装配图;
图5为本申请一些实施例提供的折叠屏设备在折叠状态下转轴机构与主中框的相对位置示意图;
图6为本申请又一些实施例提供的转轴机构的结构简图;
图7为包括图6所示转轴机构的折叠屏设备处于折叠状态与图5所示折叠屏设备处于折叠状态下的对比图;
图8为本申请又一些实施例提供的转轴机构的结构简图;
图9为本申请又一些实施例提供的转轴机构的结构简图;
图10为本申请又一些实施例提供的转轴机构的结构简图;
图11为本申请又一些实施例提供的转轴机构的结构简图;
图12为本申请又一些实施例提供的转轴机构的结构简图;
图13为本申请又一些实施例提供的转轴机构的结构简图;
图14为本申请又一些实施例提供的转轴机构的结构简图;
图15为本申请又一些实施例提供的转轴机构的结构简图;
图16为图15所示转轴机构处于折叠状态时的结构简图;
图17为本申请一些实施例提供的转轴机构的立体图;
图18为图17所示转轴机构区域I的放大图;
图19为图18所示转轴机构在隐藏两个门板后的结构示意图;
图20为图18和图19所示转轴机构中转轴基座的立体图;
图21为图20所示转轴基座的分解图;
图22为图20所示转轴基座在A-A线处的截面与第一摆臂的装配图;
图23为图22所示转轴机构在折叠状态下的结构示意图;
图24为图19所示转轴机构中拨动件的结构示意图;
图25为图24所示拨动件与图21所示转轴基座中第二连接件的装配图;
图26为图19所示转轴机构中第二摆臂的结构示意图;
图27为图25所示装配结构与图26所示第二摆臂的装配图;
图28为图19所示转轴机构在B-B线处的截面结构示意图;
图29为图28所示转轴机构在处于半折叠状态时的结构示意图;
图30为图19所示转轴机构中轴盖的结构示意图;
图31为图30所示轴盖在C-C线处的截面结构示意图;
图32为图31所示轴盖、升降滑块与拨动件上第二滑动件的装配结构示意图;
图33为图32所示转轴机构处于折叠状态下的结构示意图;
图34为图18所示转轴机构在D-D折线处的截面结构示意图;
图35为图18所示转轴机构处于折叠状态时的结构示意图;
图36为图19所示转轴机构中同步机构与第二连接件、第二摆臂、拨动件的分解图;
图37为图36所示转轴机构中同步机构、第二连接件、第二摆臂和拨动件的装配图;
图38为图19所示转轴机构中阻尼机构与第一摆臂、第二摆臂的装配图;
图39为图38所示转轴机构中阻尼机构、第一摆臂、第二摆臂的分解图;
图40为图17所示转轴机构中区域II的结构示意图;
图41为图40所示转轴机构隐藏基座主体和第二摆臂后的结构示意图;
图42为图40所示转轴机构在E-E线处的截面结构示意图;
图43为图42所示转轴机构处于半折叠状态时的结构示意图。
在本申请实施例中,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本申请实施例中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要 素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
在本申请实施例中,术语“传动连接”是指所连接的两个部件中,一个部件的运动可以传递至另一个部件,两个部件之间的连接方式包括但不限于转动连接、滑动连接、齿轮啮合传动连接、链轮传动连接、凸轮机构传动连接等连接方式中的至少一种。
本申请提供一种折叠屏设备,该折叠屏设备可以为用户设备(user equipment,UE)或者终端设备(terminal)等,例如,折叠屏设备可以为平板电脑(portable android device,PAD)、个人数字处理(personal digital assistant,PDA)、具有无线通信功能的手持设备、计算设备、车载设备、可穿戴设备、虚拟现实(virtual reality,VR)终端设备、增强现实(augmented reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等移动终端或固定终端。本申请实施例中对折叠屏设备的形态不做具体限定。
请参阅图1和图2,图1为本申请一些实施例提供的折叠屏设备100在展开状态下的立体图,图2为图1所示折叠屏设备100的局部分解结构示意图。本实施例以及下文各实施例是以折叠屏设备100为具有无线通信功能的手持设备进行示例性说明,该具有无线通信功能的手持设备例如可以是手机。折叠屏设备100在展开状态下近似呈矩形平板状。为了方便后文各实施例的描述,针对处于展开状态下的折叠屏设备100,建立XYZ坐标系,定义折叠屏设备100的长度方向为X轴方向,折叠屏设备100的宽度方向为Y轴方向,折叠屏设备100的厚度方向为Z轴方向。可以理解的是,折叠屏设备100的坐标系设置可以根据实际需要进行灵活设置,在此不做具体限定。在其他一些实施例中,折叠屏设备100的形状也可以为方形平板状、圆形平板状、椭圆形平板状等等。
折叠屏设备100包括折叠屏10和支撑装置20。
折叠屏10用于显示图像、视频等信息。折叠屏10可以为有机发光二极管(organic light-emitting diode,OLED)屏幕,微型有机发光二极管(micro organic light-emitting diode)屏幕,量子点发光二极管(quantum dot light emitting diodes,QLED)屏幕,液晶显示屏(liquid crystal display,LCD)等等。
折叠屏10具有用于显示图像信息的显示区域,折叠屏10的显示区域外露以便于向用户呈现图像、视频等信息。折叠屏10包括第一显示区域11、第二显示区域12和第三显示区域13,第三显示区域13连接于第一显示区域11与第二显示区域12之间。在图1所示折叠屏设备100中,折叠屏10处于展开状态,第一显示区域11、第三显示区域13、第二显示区域12沿X轴方向依次排列,这样,折叠屏设备100沿横向折叠。在其他一些实施例中,当折叠屏10处于展开状态时,第一显示区域11、第三显示区域13、第二显示区域12也可以沿Y轴方向依次排列。这样,折叠屏设备100沿纵向折叠。当折叠屏10处于展开状态时,能够实现大屏显示,以给用户提供更丰富的信息,带给用户更好的使用体验。
折叠屏10的至少第三显示区域13为柔性屏结构。这样,第三显示区域13受外力 作用后可以发生弯曲变形,以使折叠屏10由图1所示展开状态折叠至折叠状态。折叠屏10的第一显示区域11和第二显示区域12可以为柔性屏结构,也可以为硬屏结构,还可以部分柔性屏结构、部分硬屏结构,在此不作具体限定。
请参阅图3,图3为图1所示折叠屏设备100处于折叠状态时的结构示意图,该折叠屏设备100中的折叠屏10也处于折叠状态。具体的,当折叠屏10处于折叠状态时,折叠屏10的第一显示区域11与第二显示区域12近似平行且相对。需要说明的是,第一显示区域11与第二显示区域12之间的夹角在30°以内,均可以认为第一显示区域11和第二显示区域12近似平行。第一显示区域11与第二显示区域12相对是指第一显示区域11的显示面与第二显示区域12的显示面相面对。
当折叠屏10处于折叠状态时,请继续参阅图3,第三显示区域13被折叠成水滴形态,在此形态下,第三显示区域13包括圆弧段133、第一过渡段131和第二过渡段132。第一过渡段131连接于圆弧段133与第一显示区域11之间。第二过渡段132连接于圆弧段133与第二显示区域12之间。第一过渡段131连接第一显示区域11的一端与第二过渡段132连接第二显示区域12的一端之间的距离为第三距离,第一过渡段131连接圆弧段133的一端与第二过渡段132连接圆弧段133的一端之间的距离为第四距离,第四距离大于第三距离。可以理解的是,当折叠屏设备处于折叠状态时,折叠屏10的第三显示区域13根据实际需要,也可以折叠成其他形状,本申请对此不作限制。
当折叠屏设备100处于折叠状态时,请继续参阅图3,支撑装置20保护于折叠屏10外,折叠屏10对用户不可见,可以防止折叠屏10被硬物刮伤,该折叠屏设备为内折折叠屏设备,且折叠屏设备100的尺寸减小,方便携带。
支撑装置20用于承载折叠屏10。支撑装置20包括第一壳体(也可以称为主壳体)21、第二壳体(也可以成为副壳体)22和转轴机构23。第一壳体21承载第一显示区域11,第二壳体22承载第二显示区域12。转轴机构23连接于第一壳体21与第二壳体22之间,并承载第三显示区域13。转轴机构23用于实现第二壳体22与第一壳体21之间的旋转,以支持折叠屏10在展开状态与折叠状态之间折叠。
在上述实施例中,可选的,第一壳体21可以包括连接在一起的中框和背盖,折叠屏10的第一显示区域11承载于第一壳体21的中框上,背盖位于中框远离第一显示区域11的一侧,且背盖可以替换为显示屏(比如LCD显示屏)。中框与背盖之间形成容纳腔,该容纳腔用于容纳主板、摄像头模组、电池等电子元器件。在此基础上,第一壳体21可以借助中框与转轴机构23连接,也可以借助背盖与转轴机构23连接。下文各实施例是以第一壳体21借助中框与转轴机构23连接为例进行说明。
同样的,第二壳体22也可以包括连接在一起的中框和背盖,折叠屏10的第二显示区域12承载于第二壳体22的中框上,背盖位于该中框远离第二显示区域12的一侧,且背盖也可以替换为显示屏(比如LCD显示屏)。中框与背盖之间形成容纳腔,该容纳腔用于容纳副板、扬声器模组、阵子、电池等电子元器件。在此基础上,第二壳体22可以借助中框与转轴机构23连接,也可以借助背盖与转轴机构23连接。后文各实施例是以第二壳体22借助中框与转轴机构23连接为例进行说明。
需要说明的是,为了区分第一壳体21的中框和第二壳体22的中框,在下文各实 施例的描述中,第一壳体21的中框称为主中框,在附图中的标号为A,第二壳体22的中框称为副中框,在附图中的标号为B。
请参阅图4,图4为本申请一些实施例提供的折叠屏设备100在展开状态下内部主中框A、副中框B、转轴机构23和折叠屏10的装配图。转轴机构23包括转轴基座231和轴盖232。
转轴基座231提供转轴机构23内的位置参考基准,主中框A、副中框B可转动连接于转轴基座231上,主中框A、副中框B能够相对于转轴基座231转动,以使折叠屏设备100在展开状态与折叠状态之间运动。同时,转轴基座231还用于支撑部分折叠屏,具体的,转轴基座231用于支撑图3所示折叠屏设备内折叠屏10的第三显示区域13。
轴盖232位于转轴基座231的背侧。需要说明的是,转轴基座231的背侧是指转轴基座231背离折叠屏10的一侧,后文各实施例描述转轴机构23内其他部件所使用的“背侧”均指被描述部件背离折叠屏10的一侧,后文各实施例中不做赘述。
轴盖232作为转轴机构23的外观件(即外部可见的部件),用于包覆转轴机构23中的转轴基座231以及连接于转轴基座231的运动部件(图中未示出),以保证折叠屏设备的外观,避免转轴机构23内运动部件与转轴基座231之间的相对运动受到外界的干扰。
一般情况下,轴盖232固定连接于转轴基座231上。此连接方式稳定,实现简单,且轴盖232与转轴基座231相对位置固定,在折叠屏设备折叠的过程中,轴盖232始终包覆于转轴基座231以及连接于转轴基座231的运动部件的背侧,因此能够有效避免转轴机构23内运动部件与转轴基座231之间的相对运动受到外界的干扰。
根据以上描述,轴盖232作为转轴机构23的外观件,为了保证折叠屏设备在展开状态与折叠状态之间运动过程中的外观,在一些实施例中,请继续参阅图4,主中框A和副中框B均具有搭接部C,该搭接部C也可以设置于第一壳体21和第二壳体22的背盖上。该搭接部C与轴盖232之间具有一定的搭接量L,当折叠屏设备由展开状态向折叠状态运动时,该搭接量L逐渐减小;当折叠屏设备由折叠状态向展开状态运动时,该搭接量L逐渐增大。折叠屏设备在展开状态与折叠状态之间运动的过程中,最小搭接量为折叠屏设备处于折叠状态时的搭接量,该最小搭接量应大于或者等于0毫米(mm),以避免搭接部C与轴盖232之间形成段差,从而避免转轴机构23内部运动部件外露。但是,随着折叠屏设备逐渐向轻薄化方向发展,转轴机构23的厚度H逐渐减小,搭接部C与轴盖232的搭接量L不足,导致折叠屏设备处于折叠状态时,请参阅图5,图5为本申请一些实施例提供的折叠屏设备100在折叠状态下转轴机构23与主中框A的相对位置示意图,由图5可以看出,搭接部C与轴盖232分离,在Z轴方向上存在高h1的间隙,内部转轴基座231以及连接于转轴基座231上的运动部件裸露在外,影响折叠屏设备100的外观和品质。
为了解决上述问题,请参阅图6,图6为本申请又一些实施例提供的转轴机构23的结构简图。在本实施例中,转轴机构23包括转轴基座231、轴盖232、第一摆臂233和第一传动机构234。
转轴基座231和轴盖232所起的作用与上述实施例所述转轴基座231和轴盖232 所起的作用相同。转轴基座231的形状可以有多种,且转轴基座231可以为一个结构整体,也可以由多个部分装配形成。轴盖232可以呈半圆形、弧形或U形,也可以呈其他形状。转轴基座231和轴盖232的材料包括但不限于金属和塑胶。轴盖232位于转轴基座231的背侧。
第一摆臂233也可以称为主摆臂,第一摆臂233借助转动副1可转动连接(也可以称为铰接或者旋转连接)于转轴基座231上,第一摆臂233用于与中框(包括主中框A和副中框B)固定。当用户对折叠屏设备100进行折叠时,第一摆臂233跟随中框运动,第一摆臂233可理解为该转轴机构23的主动件。在一些实施例中,请参阅图6,第一摆臂233的数量为两个,两个第一摆臂233对称设置于转轴基座231的相对两侧,且两个第一摆臂233分别用于与主中框A和副中框B固定。两个第一摆臂233均可转动连接于转轴基座231上,且两个第一摆臂233能够相对于转轴基座231在展开位置与折叠位置之间转动。当两个第一摆臂233处于展开位置时,转轴机构23处于展开状态,安装有该转轴机构23的折叠屏设备处于展开状态。当两个第一摆臂233处于折叠位置时,转轴机构23处于折叠状态,安装有该转轴机构23的折叠屏设备处于折叠状态。
第一传动机构234连接于第一摆臂233与轴盖232之间,第一摆臂233在沿方向a1由展开位置向折叠位置转动时,借助第一传动机构234,可以带动轴盖232沿方向b1朝向转轴基座231运动。其中,轴盖232朝向转轴基座231运动是指轴盖232运动的方向使得轴盖232与转轴基座231之间的距离越来越近。以转轴基座231为位置参考基准,基于图6所示方位关系,轴盖232朝向转轴基座231的运动也即是上升运动。其中,轴盖232的上升运动可以为沿Z轴方向的上升运动,在其他一些实施例中,轴盖232的上升运动轨迹也可以相对于Z轴方向倾斜一定角度,比如倾斜5°、6°、7°、8°、9°或者10°等等。需要说明的是,当轴盖232的上升运动轨迹相对于Z轴方向倾斜角度小于5°时,均可以认为该轴盖232沿Z轴方向上升运动。本申请实施例是以轴盖232的上升运动是沿Z轴方向的上升运动进行示例性说明,这并不能认为是对本申请构成的特殊限制。
在一些实施例中,请参阅图6,第一传动机构234的数量可以为两个,两个第一传动机构234分别连接于两个第一摆臂233与轴盖232之间,两个第一摆臂233在由展开位置向折叠位置转动时,借助两个第一传动机构234,以带动轴盖232上升运动。这样,轴盖232的上升运动平稳,不易产生歪斜,防止出现卡死等问题。
在其他一些实施例中,第一传动机构234的数量也可以为一个,该一个第一传动机构234连接于两个第一摆臂233中的一个第一摆臂233与轴盖232之间。这样一来,当两个第一摆臂233在由展开位置向折叠位置转动时,借助该一个第一传动机构234,仍然可以带动轴盖232朝向转轴基座231运动。此转轴机构23的组成结构简单,成本较低,装配效率较高。
基于上述实施例的描述,本申请实施例提供的转轴机构23除了包括轴盖232和转轴基座231之外,还包括第一摆臂233和第一传动机构234,第一摆臂233用于与中框(包括主中框A和副中框B)固定,当用户对折叠屏设备100的中框进行折叠时,第一摆臂233为主动件。第一传动机构234连接于第一摆臂233与轴盖232之间。当 第一摆臂233在由展开位置向折叠位置转动时,借助第一传动机构234,可以带动轴盖232上升运动。在本申请实施例所述转轴机构23处于展开状态时的厚度与图4-图5所示折叠屏终端100中转轴机构23的厚度相等的前提下,当折叠屏终端100处于折叠状态时,请参阅图7,图7为包括图6所示转轴机构23的折叠屏设备100处于折叠状态与图5所示折叠屏设备100处于折叠状态下的对比图,两种折叠屏设备100中转轴基座231和中框(图中只显示出了主中框A)的尺寸、形状及相对位置相同,且在图7中的位置重合。图5所示折叠屏设备100中轴盖232处于a位置,包括图6所示转轴机构23的折叠屏设备100中轴盖232处于b位置,b位置高于a位置。图5所示折叠屏设备100的轴盖232与搭接部C之间的间隙为h1,包括图6所示转轴机构23的折叠屏设备100中轴盖232与搭接部C之间的间隙为h2,h2小于h1。由此可知,上升后的轴盖232可以在一定程度上补偿轴盖232与中框的搭接部C之间的间隙,降低内部转轴基座231以及连接于转轴基座231上的运动部件外露的风险。
在一些实施例中,上述h2近似为0或者小于0。需要说明的是,h2小于0是指轴盖232与搭接部C之间存在搭接量。这样一来,有效补偿了轴盖232与中框的搭接部C之间的间隙,尽可能地降低了内部转轴基座231以及连接于转轴基座231上的运动部件外露的风险。
在一些实施例中,第一摆臂233在沿方向a1的反方向由折叠位置向展开位置转动时,借助第一传动机构234,可以带动轴盖232沿方向b1的反方向远离转轴基座231运动。其中,轴盖232远离转轴基座231运动是指轴盖232运动的方向使得轴盖232与转轴基座231之间的距离越来越远。以转轴基座231为位置参考基准,基于图6所示方位关系,轴盖232远离转轴基座231的运动也即是下降运动。这样,可以实现复位,以不影响下一次折叠时轴盖232的上升运动。
在上述实施例中,轴盖232的下降运动也可以为沿-Z轴方向的下降运动,其中,-Z轴方向是指Z轴方向的反方向。在其他一些实施例中,轴盖232的下降运动轨迹也可以相对于-Z轴方向倾斜一定角度,比如倾斜5°、6°、7°、8°、9°、10°等等。需要说明的是,当轴盖232的下降运动轨迹相对于-Z轴方向倾斜角度小于5°以内,均可以认为该轴盖232沿-Z轴方向下降运动。下文各实施例均是以轴盖232的下降运动是沿-Z轴方向的下降运动进行示例性说明。
为了保证轴盖232的上升运动和下降运动的可靠性,在一些实施例中,请返回参阅图6,轴盖232与转轴基座231之间具有限位结构230,该限位结构230允许轴盖232沿着转轴基座231的厚度方向(也即是Z轴方向)朝向或者远离转轴基座231运动,阻止轴盖232沿着与转轴基座231的厚度方向垂直的平面(也即是XY平面)运动。这样一来,借助限位结构230限位,可以保证轴盖232上升或下降运动的稳定性,防止轴盖232相对于转轴基座231产生错位而无法包覆转轴基座231以及连接于转轴基座231上的运动机构。
在一些实施例中,请继续参阅图6,限位结构230可以包括限位滑槽2301和限位滑动件2302。限位滑槽2301设置于转轴基座231上,限位滑动件2302设置于轴盖232上。在其他一些实施例中,限位滑动件2302设置于转轴基座231上,限位滑槽2301设置于轴盖232上,限位滑槽2301沿着Z轴方向延伸,限位滑动件2302设置于限位 滑槽2301内,并能够沿限位滑槽2301滑动。限位滑槽2301和限位滑动件2302形成滑动约束,以使轴盖232相对于转轴基座231沿着Z轴方向滑动,此结构简单,容易实现。在其他一些实施例中,限位结构230也可以由导轨以及滑动连接于导轨上的滑块组成,或者由限位孔以及滑动穿设于限位孔中的限位柱组成,在此不作限定。
第一传动机构234的结构形式有多种。比如,第一传动机构234为连接于第一摆臂233与轴盖232之间的连杆。又比如,第一传动机构234为连接于第一摆臂233与轴盖232之间的滑动副,只要能够满足第一摆臂233在展开位置与折叠位置之间转动时,可以借助第一传动机构234,带动轴盖232升降运动即可。
示例的,请参阅图8,图8为本申请又一些实施例提供的转轴机构23的结构简图。在本实施例中,第一传动机构234为连杆,连杆的一端与第一摆臂233可转动连接,连杆的另一端与轴盖232转动连接。第一摆臂233在沿方向a1由展开位置向折叠位置转动时,借助该连杆,可以带动轴盖232沿方向b1朝向转轴基座231运动。此第一传动机构234的结构简单,装配难度较低,装配效率较高。
又示例的,请参阅图9,图9为本申请又一些实施例提供的转轴机构23的结构简图。在本实施例中,第一传动机构234为滑动副。可选的,请参阅图9,该滑动副包括滑槽234a和滑动件234b。滑动件234b的结构形式包括但不限于滑块、滑柱、滚轮、滚柱、滚轴或者滚筒。滑动件234b固定于第一摆臂233上,滑槽234a固定于轴盖232上。在其他一些实施例中,滑动件234b也可以固定于轴盖232上,滑槽234a固定于第一摆臂233上。滑动件234b滑动连接于滑槽234a内。这样一来,滑槽234a和滑动件234b形成滑动副,第一摆臂233在沿方向a1由展开位置向折叠位置转动时,滑动件234b将滑槽234a向上拨动,并沿滑槽234a滑动,由此带动轴盖232沿方向b1朝向转轴基座231运动。此第一传动机构234的结构简单,装配难度较低,装配效率较高。需要说明的是,本实施例中的滑动副并不限于滑槽和滑动件,还可以为导轨和滑块,本申请对此不作限定。
还示例的,请参阅图10,图10为本申请又一些实施例提供的转轴机构23的结构简图。在本实施例中,第一传动机构234包括第二摆臂2341。第二摆臂2341也可以称为从摆臂。第二摆臂2341借助转动副2可转动连接于转轴基座231上,且第一摆臂233与第二摆臂2341传动连接。第一摆臂233在沿方向a1由展开位置向折叠位置转动时,能够带动第二摆臂2341相对于转轴基座231转动。在此基础上,第二摆臂2341还与轴盖232传动连接,第一摆臂233在沿方向a1由展开位置向折叠位置转动时,能够进一步借助第二摆臂2341带动轴盖232上升运动。这样一来,借助第二摆臂2341将第一摆臂233的旋转运动传递至轴盖232,以使轴盖232上升,且第二摆臂2341受转轴基座231上转动副2的位置约束,因此传动的稳定性较优。
当折叠屏设备处于展开状态下,转轴机构23的整体高度是影响折叠屏设备的厚度的关键因素,而当折叠屏设备处于展开状态时,转轴机构23的整体高度受转轴基座231的厚度、轴盖232的厚度以及轴盖232在由展开状态向折叠状态运动过程中的上升量影响,在转轴基座231的厚度以及轴盖232的厚度不变的前提下,轴盖232在由展开状态向折叠状态运动过程中的上升量越小,转轴机构23的整体厚度可以设计得越薄,越有利于折叠屏设备在展开状态时的薄型化。
为了满足折叠屏设备的薄型化设计需求,在一些实施例中,第一摆臂233和第二摆臂2341位于转轴基座231的同一侧。这样一来,第二摆臂2341相对于转轴基座231的转动方向与第一摆臂233相对于转轴基座231的转动方向相同。需要说明的是,本申请实施例所述的两个部件的转动方向相同,表示在同一视角下,传动连接的两个部件均沿顺时针方向转动,或者均沿逆时针方向转动。针对传动连接在一起的第一摆臂233和第二摆臂2341,第二摆臂2341的转动方向与第一摆臂233的转动方向相同,具体的,在图10所示视角下,左侧的第一摆臂233的转动方向a1为顺时针方向,左侧的第二摆臂2341与左侧的第一摆臂233传动连接,左侧的第二摆臂2341的转动方向为方向a2,方向a2也为顺时针方向,右侧的第一摆臂233的转动方向a1为逆时针方向,右侧的第二摆臂2341与右侧的第一摆臂233传动连接,右侧的第二摆臂2341的转动方向a2也为逆时针,因此方向a2与方向a1的转动方向相同。在此基础上,第一摆臂233在由展开位置转动至折叠位置时,带动第二摆臂2341相对于转轴基座231的转动角度小于第一摆臂233相对于转轴基座231的转动角度。在一些实施例中,第一摆臂233在由展开位置转动至折叠位置时,相对于转轴基座231的转动角度可以为90°,在此基础上,第二摆臂2341相对于转轴基座231的转动角度可以为75°、80°、85°等等,本申请对此不做限定。需要说明的是,第一摆臂233在由展开位置转动至折叠位置时,相对于转轴基座231的转动角度也可以根据形态设计为其他角度,在此不做具体限定。这样一来,借助第二摆臂2341减小了传动角度,相比于采用第一摆臂233直接带动轴盖232上升运动的方案,采用转动角度较小的第二摆臂2341带动轴盖232上升运动的高度较小,有利于减小转轴机构23在处于展开状态时的整体高度,从而有利于折叠屏设备100在展开状态下的薄型化。
在一些实施例中,第一摆臂233可以借助连杆与第二摆臂2341传动连接,也可以借助滑动副与第二摆臂2341传动连接,在此不作限定。
示例的,请参阅图11,图11为本申请又一些实施例提供的转轴机构23的结构简图。本实施例中,第一传动机构234包括第一连杆234c,第一摆臂233借助该第一连杆234c与第二摆臂2341传动连接。具体的,第一连杆234c的一端与第一摆臂233可转动连接,第一连杆234c的另一端与第二摆臂2341可转动连接。第一摆臂233在沿方向a1由展开位置向折叠位置转动时,可以借助第一连杆234c带动第二摆臂2341沿方向a2相对于转轴基座231转动。第一摆臂233在转轴基座231上的旋转轴线与第二摆臂2341在转轴基座231上的旋转轴线不共线。转轴基座231、第一摆臂233、第一连杆234c和第二摆臂2341组成铰链四杆机构,铰链四杆机构的自由度为1,运动方式唯一,稳定性较优,且通过合理设计铰链四杆机构的各个杆长,可以使得转轴机构23在由展开状态运动至折叠状态时,第二摆臂2341相对于转轴基座231的转动角度小于第一摆臂233相对于转轴基座231的转动角度。此结构简单,容易实现。
又示例的,请参阅图12,图12为本申请又一些实施例提供的转轴机构23的结构简图。本实施例中,第一传动机构234包括滑动副2342,第一摆臂233借助该滑动副2342与第二摆臂2341传动连接。在一些实施例中,请继续参阅图12,滑动副2342包括第一滑槽2342a和第一滑动件2342b。第一滑槽2342a设置于第二摆臂2341上,第一滑动件2342b的结构形式包括但不限于滑块、滑柱、滚轮、滚柱、滚轴或者滚筒, 第一滑动件2342b设置于第一摆臂233上。在其他一些实施例中,第一滑槽2342a也可以设置于第一摆臂233上,第一滑动件2342b设置于第二摆臂2341上。第一滑动件2342b滑动连接于第一滑槽2342a内。这样一来,第一摆臂233借助第一滑槽2342a和第一滑动件2342b组成的滑动副与第二摆臂2341传动连接。第一摆臂233在沿方向a1由展开位置向折叠位置转动时,可以借助第一滑槽2342a向上拨动第一滑动件2342b,以使第二摆臂2341沿方向a2相对于转轴基座231转动,同时第一滑动件2342b在第一滑槽2342a内滑动。第一摆臂233在转轴基座231上的旋转轴线与第二摆臂2341在转轴基座231上的旋转轴线不共线。转轴基座231、第一摆臂233、滑动副2342和第二摆臂2341组成曲柄滑块机构,曲柄滑块机构的自由度为1,运动方式唯一,稳定性较优,且结构简单,占用空间及高度较小,有利于转轴机构23的体积小型化和厚度薄型化。
可以理解的是,上述实施例的滑动副2342并不限于由滑槽和滑动件组成,还可以由导轨和滑块组成,本申请对此不做具体限定。
需要说明的是,下文各实施例均是在第一摆臂233借助该滑动副2342与第二摆臂2341传动连接的基础上进行的说明,这不能认为是对本申请构成的特殊限制。
在一些实施例中,请参阅图12,第二摆臂2341与转轴基座231的转动轴线为第一轴线(也即是转动副2的轴线)。第一滑槽2342a具有第一端d3和第二端d4,第一端d3至第一轴线的距离小于第二端d4至第一轴线的距离。当第一摆臂233处于展开位置时,第一端d3至折叠屏的垂直距离大于第二端d4至折叠屏的垂直距离,也就是说,第一滑槽2342a由第一端d3至第二端d4向靠近折叠屏的方向倾斜。同时,当第一摆臂233由展开位置向折叠位置转动时,第一滑动件2342b沿第一滑槽2342a由第一端d3向第二端d4滑动。这样一来,转轴机构23在由展开状态运动至折叠状态时,第二摆臂2341相对于转轴基座231的转动角度小于第一摆臂233相对于转轴基座231的转动角度。
在一些实施例中,请参阅图13,图13为本申请又一些实施例提供的转轴机构23的结构简图。在本实施例中,第一传动机构234还包括拨动件(也称为曲柄拨动件)2343。拨动件2343与第二摆臂2341相对固定。具体的,拨动件2343和第二摆臂2341可以为两个独立的结构件并通过焊接、卡接、螺纹连接、粘接等方式固定在一起,拨动件2343和第二摆臂2341也可以为一个结构件整体,也即是,拨动件2343和第二摆臂2341一体成型,本申请对此不作具体限定。第二摆臂2341借助拨动件2343与轴盖232传动连接。这样一来,第一摆臂233在带动第二摆臂2341相对于转轴基座231转动的同时,还带动拨动件2343相对于转轴基座231转动,以进一步借助拨动件2343带动轴盖232上升运动。本实施例中,第二摆臂2341和拨动件2343组成的整体中,传动连接第一摆臂233的端部布局在第二摆臂2341上,传动连接轴盖232的端部布局在拨动件2343上,避免出现传动连接第一摆臂233的端部以及传动连接轴盖232的端部集中布局在第二摆臂2341的情况,能够减小第二摆臂2341的结构复杂度。
在上述实施例的基础上,为了进一步满足折叠屏设备的薄型化设计需求,在一些实施例中,请继续参阅图13,第二摆臂2341传动连接第一摆臂233的端部D1至第二摆臂2341的转动中心(也即是转动副2的中心)的距离为第一距离,拨动件2343传动 连接轴盖232的端部D2相对于第二摆臂2341的转动中心偏心设置,且拨动件2343传动连接轴盖232的端部D2至第二摆臂2341的转动中心的距离为第二距离。第一距离小于第二距离。这样一来,在拨动件2343的转动角度与第二摆臂2341的转动角度相同的前提下,借助拨动件2343减小了摆臂的长度,从而减小了拨动件2343所能够带动的轴盖232的上升高度,有利于减小转轴机构23在轴盖232处于展开状态时的整体高度,从而有利于折叠屏设备100在展开状态下的薄型化。
在一些实施例中,拨动件2343可以借助连杆与轴盖232传动连接,也可以借助滑动副与轴盖232传动连接,在此不作限定。
示例的,请参阅图14,图14为本申请又一些实施例提供的转轴机构23的结构简图。在本实施例中,第一传动机构234还包括滑动副2344,拨动件2343借助该滑动副2344与轴盖232传动连接。在一些实施例中,请继续参阅图14,滑动副2344包括第二滑槽2344a和第二滑动件2344b。第二滑槽2344a设置于轴盖232上。第二滑动件2344b的结构形式包括但不限于滑块、滑柱、滚轮、滚柱、滚轴或者滚筒,这样,第二滑动件2344b为相对于第二摆臂2341的转动中心的偏心块、偏心柱、偏心轮、偏心轴或者偏心圆。第二滑动件2344b设置于拨动件2343上。在其他一些实施例中,第二滑槽2344a也可以设置于拨动件2343上,第二滑动件2344b设置于轴盖232上。第二滑动件2344b滑动连接于第二滑槽2344a内。这样一来,拨动件2343借助第二滑槽2344a和第二滑动件2344b组成的滑动副与轴盖232传动连接。拨动件2343在随着第二摆臂2341转动的过程中,可以借助第二滑动件2344b向上拨动第二滑槽2344a,以使轴盖232沿方向b1上升运动。此结构简单,且占用空间及高度较小,有利于转轴机构23的体积小型化和厚度薄型化。
可以理解的是,上述实施例的滑动副2344并不限于由滑槽和滑动件组成,还可以由导轨和滑块组成,本申请对此不做具体限定。
根据以上描述可知,第一传动机构234的结构形式有多种,下文各实施例均是在图14所示第一传动机构234的基础上作出的进一步介绍,这并不能认为是对本申请构成的特殊限制。
在一些实施例中,请参阅图15,图15为本申请又一些实施例提供的转轴机构23的结构简图。本实施例所述转轴机构23与图14所示转轴机构23的不同之处在于:本实施例中,转轴机构23还包括门板235和第二传动机构236。
在折叠屏设备中,门板235位于中框(包括主中框和副中框)与转轴基座231之间。门板235用于支撑部分折叠屏10,具体的,门板235用于支撑图3所示折叠屏设备内折叠屏10中第三显示区域13的两侧显示区域131、132。当折叠屏终端处于展开状态时,中框上用于设置折叠屏10的表面、门板235上用于设置折叠屏10的表面以及转轴基座231上用于设置折叠屏10的表面近似共面设置。
门板235借助转动副3可转动连接于第一摆臂233上。第二传动机构236连接于门板235与转轴基座231之间。第一摆臂233在沿方向a1由展开位置向折叠位置转动时,借助第二传动机构236,带动门板235靠近转轴基座231的一端相对于门板235远离转轴基座231的一端向远离折叠屏的一侧倾斜。这样一来,当第一摆臂233转动至折叠位置时,请参阅图16,图16为图15所示转轴机构23处于折叠状态时的结构 简图,轴盖232上升高度h,门板233上用于设置折叠屏10的表面与转轴基座231上用于设置折叠屏10的表面之间的夹角为第一夹角,中框上用于设置折叠屏10的表面与转轴基座231上用于设置折叠屏10的表面之间的夹角为第二夹角,第一夹角小于第二夹角。换句话说,也即是,在第一摆臂233由展开位置转动至折叠位置时,门板233相对于转轴基座231的转动角度大于中框相对于转轴基座231的转动角度,由于中框固定于第一摆臂233上,因此中框相对于转轴基座231的转动角度与第一摆臂233相对于转轴基座231的转动角度相等。也就是说,门板233相对于转轴基座231的转动角度大于第一摆臂233相对于转轴基座231的转动角度。在第一摆臂233的转动角度为90°的前提下,门板233的转动角度可以为100°、105°、102°、110°等等,在此不作具体限定。这样一来,可以将折叠屏的第三显示区域折叠成水滴状,以减小内折角,降低折叠屏出现折痕的概率,保证折叠屏的显示效果,延长折叠屏的使用寿命。
第二传动机构236的结构形式有多种。
比如,第二传动机构236为连接于门板235与转轴基座231之间的连杆。
又比如,请继续参阅图15,第二传动机构236包括门板摆臂2361。门板摆臂2361借助转动副4可转动连接于转轴基座231上,转动副4的旋转轴线与转动副1的旋转轴线不共线。门板235上设置有第三滑槽2351,门板摆臂2361可滑动穿设于第三滑槽2351内。第一摆臂233沿方向a1由展开位置向折叠位置转动时,带动门板摆臂2361相对于转轴基座231转动,并使门板摆臂2361在第三滑槽2351内滑动。其中,门板摆臂2361的转动方向与第一摆臂233的转动方向相同。在此基础上,第一摆臂233在由展开位置转动至折叠位置时,带动门板摆臂2361相对于转轴基座231的转动角度大于第一摆臂233相对于转轴基座231的转动角度。也即是,第一摆臂233在由展开位置转动至折叠位置时,带动门板235相对于转轴基座231的转动角度大于第一摆臂233相对于转轴基座231的转动角度,这样一来,可以将折叠屏的第三显示区域折叠成水滴状。此结构简单,占用体积及高度较小,能够减小转轴机构的体积和高度。
以上各实施例是通过结构简图的方式介绍了本申请的多个实施例,下文将结合三维立体图详细介绍转轴机构23的具体结构。
请参阅图17,图17为本申请一些实施例提供的转轴机构23的立体图。在本实施例中,转轴机构23处于展开状态。转轴机构23包括第一转轴部分23a、第二转轴部分23b和第三转轴部分23c。第一转轴部分23a、第二转轴部分23b、第三转轴部分23c沿转轴机构23的长度方向(也即是Y轴方向)依次设置。下面首先介绍第一转轴部分23a的具体结构。
请参阅图18和图19,图18为图17所示转轴机构23区域I的放大图,图18中隐藏了副中框B,图19为图18所示转轴机构23在隐藏两个门板235后的结构示意图。转轴机构23包括转轴基座231、轴盖232、第一摆臂233、第二摆臂2341、拨动件2343、升降滑块232a、门板235、门板摆臂2361、同步机构237和阻尼机构238。其中,转轴基座231、轴盖232、第一摆臂233、第二摆臂2341、拨动件2343和升降滑块232a组成轴盖升降***。门板235和门板摆臂2361形成门板运动***。
首先,对轴盖升降***进行介绍:
具体的,转轴基座231提供位置参考基准。请参阅图18,转轴基座231具有支撑 面m1,支撑面m1用于支撑部分折叠屏,具体的,支撑面m1用于支撑图3所示折叠屏设备内折叠屏10中第三显示区域13的圆弧段133。
转轴基座231可以为一个结构件整体,也可以由多个零部件装配形成。在一些实施例中,请参阅图20和图21,图20为图18和图19所示转轴机构23中转轴基座231的立体图,图21为图20所示转轴基座231的分解图。在本实施例中,转轴基座231包括基座主体2311和第一连接件2312。支撑面m1设置于基座主体2311上。一些实施例中,第一连接件2312的数量为两个,两个第一连接件2312位于基座主体2311的背侧,两个第一连接件2312沿转轴基座231的长度方向间隔设置,且两个第一连接件2312均与基座主体2311固定,具体的,两个第一连接件2312与基座主体2311可以通过螺钉锁附固定。在其他一些实施例中,二者也可以通过卡接、焊接等方式固定。在其他一些实施例中,第一连接件2312的数量也可以为一个、三个或者三个以上,本实施例对此不做具体限定。两个第一连接件2312与基座主体2311围成第一连接部位231a,第一连接部位231a用于可转动连接第一摆臂233。在一些实施例中,两个第一连接件2312中,每个第一连接件2312与基座主体2311围成左右两侧的两个第一连接部位231a,两个第一连接件2312与基座主体2311总共围成四个第一连接部位231a。该四个第一连接部位231a中,两个第一连接部位231a位于左侧,用于与左侧的第一摆臂233可转动连接,另外两个第一连接部位231a位于右侧,用于与右侧的第一摆臂233可转动连接。
在一些实施例中,请参阅图22,图22为图20所示转轴基座231在A-A线处的截面与第一摆臂233的装配图,第一连接部位231a为圆弧形滑槽,该圆弧形滑槽的圆心线沿转轴基座231的长度方向(也即是Y轴方向)延伸。第一摆臂233用于与主中框A固定连接,第一摆臂233可转动连接于该圆弧形滑槽内。具体的,第一摆臂233具有圆弧形滑片,该圆弧形滑片配合容纳于圆弧形滑槽内,由此实现可转动连接。图22显示的是转轴机构23处于展开状态时的结构示意图,请参阅图23,图23为图22所示转轴机构23在折叠状态下的结构示意图。这样一来,第一连接件2312和基座主体2311可以由第一摆臂233的转轴部位(也即是圆弧形滑片)的相对两侧对该转轴部位进行限位后,再将第一连接件2312与基座主体2311固定在一起,由此实现转轴基座231与第一摆臂233的装配,此装配操作简单,效率较高。
在一些实施例中,请返回参阅图20,分别连接两侧的第一摆臂233的第一连接部位231a沿转轴基座231的长度方向(也即是Y轴方向)间隔设置。这样一来,两个第一摆臂233与转轴基座231的连接部位沿Y轴方向错位设置,能够减小转轴基座231在X轴方向上的宽度,从而减小折叠屏设备在处于折叠状态时的厚度。
在一些实施例中,请继续参阅图20和图21,转轴基座231还包括第二连接件2313。第二连接件2313位于基座主体2311的背侧,第二连接件2313位于两个第一连接件2312之间,且第二连接件2313与基座主体2311固定。在一些实施例中,第二连接件2313与基座主体2311通过螺钉锁附固定,在其他一些实施例中,二者也可以通过卡接、焊接等方式固定。在一些实施例中,两个第一连接件2312和第二连接件2313沿转轴基座231的长度方向(也即是Y轴方向)依次排列。这样一来,可以减小转轴基座231在Z轴方向上的厚度。第二连接件2313用于可转动连接第二摆臂2341和拨动 件2343。这样一来,将第二摆臂2341和拨动件2343安装于第二连接件2313上之后,再将第二连接件2313固定于基座主体2311上,该装配操作简单,效率较高。
具体的,第二连接件2313与第二摆臂2341、拨动件2343可以通过下面的方式可转动连接。
请参阅图21,第二连接件2313上设有轴套2313a,轴套2313a内设有圆柱形轴孔。一些实施例中,轴套2313a的数量为四个,其中,左侧的两个轴套2313a用于可转动连接左侧第二摆臂2341以及与该第二摆臂2341相对固定的拨动件2343,右侧的两个轴套2313a用于可转动连接右侧第二摆臂2341以及与该第二摆臂2341相对固定的拨动件2343。由于转轴机构23为左右对称的结构,因此下文仅介绍左侧的两个轴套2313a与第二摆臂2341、拨动件2343的可转动连接方式为例进行说明,右侧的两个轴套2313a与第二摆臂2341、拨动件2343的可转动连接方式与前述左侧连接方式相同,在此不做赘述。
具体的,请参阅图24,图24为图19所示转轴机构23中拨动件2343的结构示意图。拨动件2343包括转轴部2343a。转轴部2343a包括第一段2343a1和第二段2343a2,第一段2343a1的侧面上设有扁位n。在一些实施例中,扁位n设置于第一段2343a1的相对两侧侧面。在其他一些实施例中,扁位n也可以设置于第一段2343a1的周向一侧、三侧或者四侧,在此不做具体限定。第二段2343a2的截面呈圆形。请参阅图25,图25为图24所示拨动件2343与图21所示转轴基座231中第二连接件2313的装配图。拨动件2343的转轴部2343a穿设于第二连接件2313的左侧的两个轴套2313a内,并能够在该两个轴套2313a内转动。
请继续参阅图24,拨动件2343还包括偏心凸出部。该偏心凸出部也即是图14所示转轴机构23中的第二滑动件2344b。该偏心凸出部也可以替换为偏心轮、偏心滚轮、偏心滚筒等等,在此不作具体限定。
请参阅图26,图26为图19所示转轴机构23中第二摆臂2341的结构示意图。第二摆臂2341上设有的扁位孔2341a和圆孔2341b,该扁位孔2341a的形状尺寸与图22所示拨动件2343中第一段2343a1的截面形状尺寸相适应,圆孔2341b的形状尺寸与图22所示拨动件2343中第二段2343a2的截面形状尺寸相适应。请参阅图27,图27为图25所示装配结构与图26所示第二摆臂2341的装配图。第二摆臂2341连接于转轴部2343a的位于两个轴套2313a之间的部分上,以通过两个轴套2313a对第二摆臂2341进行限位,在此基础上,第二摆臂2341借助该扁位孔2341a配合套设于转轴部2343a上(图中未显示出),以通过扁位阻止第二摆臂2341相对于拨动件2343转动,同时,第二摆臂2341还借助圆孔2341b套设于第二段2343a2上。
这样一来,实现了第二连接件2313与第二摆臂2341、拨动件2343的可转动连接,并实现了第二摆臂2341与拨动件2343的位置固定,以在第二摆臂2341转动时,可以带动拨动件2343跟随转动。此结构装配方便,且稳定性较优。
在其他一些实施例中,也可以通过销钉固定、过盈配合等方式阻止第二摆臂2341相对于拨动件2343转动,在此不作具体限定。
需要说明的是,上述实施例中,第二摆臂2341和拨动件2343为两个彼此独立的结构件,在其他一些实施例中,第二摆臂2341和拨动件2343也可以为一个结构件整 体,也即是第二摆臂2341与拨动件2343一体成型。这样一来,转轴机构23包括的零部件的数量较少,组成结构复杂度较低,结构更简单。
请参阅图28,图28为图19所示转轴机构23在B-B线处的截面结构示意图。第一摆臂233上设有第一滑动件2342b,第二摆臂2341上设有第一滑槽2342a,第一滑动件2342b滑动连接于第一滑槽2342a内。第一摆臂233在沿方向a1由展开位置向折叠位置转动时,可以借助第一滑动件2342b拨动第一滑槽2342a,以使第二摆臂2341沿方向a2转动,同时第一滑动件2342b在第一滑槽2342a内沿方向a3滑动。在此基础上,第一摆臂233在沿方向a1的反方向由折叠位置向展开位置转动时,可以借助第一滑动件2342b拨动第一滑槽2342a,以使第二摆臂2341沿方向a2的反方向转动,同时第一滑动件2342b在第一滑槽2342a内沿方向a3的反方向滑动。
请参阅图29,图29为图28所示转轴机构23在处于半折叠状态时的结构示意图。其中,半折叠状态是指第一摆臂233在由展开位置向折叠位置转动一定角度,该角度小于转动至折叠位置时的转动角度时,转轴机构23所处的状态。
请参阅图30,图30为图19所示转轴机构23中轴盖232的结构示意图。轴盖232的内表面设有升降滑块232a。其中,轴盖232的内表面是指轴盖232朝向折叠屏的表面。升降滑块232a的数量为3个,3个升降滑块232a分别包括在图17中的第一转轴部分23a、第二转轴部分23b、第三转轴部分23c内。升降滑块232a与轴盖232可以为两个独立的结构件,也可以为一个结构件整体,也即是二者一体成型。在图30所示的实施例中,轴盖232与升降滑块232a分别为两个独立的结构件,轴盖232与升降滑块232a借助螺钉固定在一起,在其他一些实施例中,二者也可以采用卡接、焊接等方式固定在一起。请参阅图31,图31为图30所示轴盖232在C-C线处的截面结构示意图。升降滑块232a上设有第二滑槽2344a,第二滑槽2344a用于与图24所示拨动件2343上第二滑动件2344b滑动连接。请参阅图32,图32为图31所示轴盖232、升降滑块232a与拨动件2343上第二滑动件2344b的装配结构示意图。拨动件2343的偏心凸出部(也即是第一滑动件2344b)穿设于升降滑块232a上的第二滑槽2344a内,并能够沿该第二滑槽2344a滑动。这样一来,当第一摆臂233沿方向a1由展开位置向折叠位置转动时,拨动件2343跟随第二摆臂2341沿方向a4转动,借助偏心凸出部可以拨动第二滑槽2344a,以带动升降滑块232a沿方向b1上升运动,同时偏心凸出部在第二滑槽2344a内沿方向a5滑动。在此基础上,当第一摆臂233沿方向a1的反方向由折叠位置向展开位置转动时,拨动件2343跟随第二摆臂2341沿方向a4的反方向转动,借助偏心凸出部可以拨动第二滑槽2344a,以带动升降滑块232a沿方向b1的反方向下降运动,同时偏心凸出部在第二滑槽2344a内沿方向a5的反方向滑动。
请返回参阅图30和图31,升降滑块232a上还设有限位滑槽2301,请参阅图32,转轴基座231上设有限位滑动件2302。可选的,限位滑动件2302可以设置于转轴基座231的基座主体2311上,在其他一些实施例中,限位滑动件2302也可以设置于转轴基座231的第一连接件2312或者第二连接件2313上。请参阅图32,限位滑动件2302配合设置于限位滑槽2301内,并能够沿限位滑槽2301上下滑动。限位滑槽2301与限位滑动件2302形成滑动约束,以允许轴盖232沿着转轴基座231的厚度方向(也即是Z轴方向)升降运动,阻止轴盖232沿着与转轴基座231的厚度方向垂直的平面(也 即是XY平面)运动,防止产生错位或者卡死。
在一些实施例中,请重点参阅图32,轴盖232与升降滑块232a的连接部位位于限位滑槽2301内,上述限位滑动件2302上对应该连接部位的位置设有避让孔,连接部位容纳于避让孔内。由此可以降低转轴机构23的厚度。
需要说明的是,上述限位滑槽2301和限位滑动件2302的设置位置可以互换,且限位滑槽2301和限位滑动件2302可以采用其他滑动约束组件(比如导轨和滑块)替代,本申请对此不作具体限定。
根据以上描述,第二摆臂2341、第一滑槽2342a、第一滑动件2342b、拨动件2343(设有第二滑动件2344b)、升降滑块232a(设有第二滑槽2344a)组成第一传动机构,以使第一摆臂233在由展开位置向折叠位置转动时,借助该第一传动机构,可以带动轴盖232上升运动,以补偿轴盖与壳体之间的段差,避免内部结构外露。同时还使得第一摆臂233在由折叠位置向展开位置转动时,借助该第一传动机构,可以带动轴盖232下降运动,以实现复位。此第一传动机构的结构简单容易实现。根据前文描述,第一传动机构还可以有其他结构形式,具体描述如前,在此不做赘述。
图32中转轴机构23处于展开状态。请参阅图33,图33为图32所示转轴机构23处于折叠状态下的结构示意图。对比图32和图33可知,当转轴机构23由图32所示展开状态转动至图33所示折叠状态时,轴盖232相对于转轴基座231上升一定高度,当转轴机构23由图33所示折叠状态转动至图32所示展开状态时,轴盖232相对于转轴基座231下降一定高度。
其次,下面对图18和图19所示转轴机构23中的门板运动***进行介绍:
具体的,请参阅图34,图34为图18所示转轴机构23在D-D折线处的截面结构示意图。在本实施例中,转轴机构23处于展开状态,主中框A上用于设置折叠屏的表面m3、门板235上用于设置折叠屏的表面m2以及转轴基座231上用于设置折叠屏的表面m1近似共面设置。左右两侧门板235的连接形式相同。门板235借助转动副3可转动连接于第一摆臂233上,门板235内设有第三滑槽2351。门板摆臂2361借助转动副4可转动连接于转轴基座231上,在一些实施例中,门板摆臂2361可转动连接于转轴基座231的第一连接件2312上。门板摆臂2361可滑动穿设于第三滑槽2351内。在此基础上,当第一摆臂233在由展开位置向折叠位置转动时,可以带动门板摆臂2361相对于门板235沿方向a6滑动,并带动门板235靠近转轴基座231的一端d1相对于远离转轴基座231的一端d2向远离折叠屏的一侧倾斜。
这样一来,当第一摆臂233转动至折叠位置时,请参阅图35,图35为图18所示转轴机构23处于折叠状态时的结构示意图,m2与m1的夹角为第一夹角θ1,m3与m1的夹角为第二夹角θ2,第一夹角θ1小于第二夹角θ2。由此可以推导出,在第一摆臂233由展开位置转动至折叠位置时,门板235相对于转轴基座231的转动角度大于中框相对于转轴基座231的转动角度,由于中框固定于第一摆臂233上,因此中框相对于转轴基座231的转动角度与第一摆臂233相对于转轴基座231的转动角度相等。也就是说,门板235相对于转轴基座231的转动角度大于第一摆臂233相对于转轴基座231的转动角度。在第一摆臂233的转动角度为90°的前提下,门板235的转动角度可以为100°、105°、102°、110°等等,在此不作具体限定。这样一来,可以将 折叠屏的第三显示区域折叠成水滴状,以减小内折角,降低折叠屏出现折痕的概率,保证折叠屏的显示效果,延长折叠屏的使用寿命。
在上述实施例中,门板摆臂2361形成第二传动机构。当第一摆臂233在由展开位置向折叠位置转动时,借助该第二传动机构,可以带动门板235靠近转轴基座231的一端b1相对于远离转轴基座231的一端b2向远离折叠屏的一侧倾斜,以形成水滴状的折叠屏结构;当第一摆臂233在由折叠位置向展开位置转动时,借助该第二传动机构,可以带动门板235靠近转轴基座231的一端b1相对于远离转轴基座231的一端b2向远离折叠屏的一侧倾斜,以使m1、m2和m3近似共面设置,以使折叠屏保持平整。可以知道的是,上述第二传动机构可以有其他结构形式,具体描述如前,在此不做赘述。
根据前文描述的轴盖升降***和门板运动***,具体的,由于转轴机构23包括左右对称的两部分,在图17和图18所示的转轴机构23中,每个部分包括转轴基座231、轴盖232、第一摆臂233、第二摆臂2341(附带拨动件2343)、门板235和门板摆臂2361总共六个零件(M),转轴机构23在展开状态与折叠状态之间运动过程中,这六个零件的运动方式唯一,稳定性较优。
然后,对图17和图18所示转轴机构23中的同步机构237进行介绍:
同步机构237的作用为:两个第一摆臂233中,任意一个第一摆臂233在由展开位置向折叠位置转动时,借助该同步机构237,均能够带动另一个第一摆臂233由展开位置向折叠位置同步转动。同理的,任意一个第一摆臂233在由折叠位置向展开位置转动时,也可以借助该同步机构237,带动另一个第一摆臂233由折叠位置向展开位置同步转动。
在一些实施例中,当两个第一摆臂233同步转动时,两个第一摆臂233的转动角度也保持一致。可以理解,由于制作或装配公差,两个第一摆臂233在旋转过程中可能存在一定的角度偏差,因此一般情况下,两个第一摆臂233在由展开位置转动至折叠位置时转动角度的偏差范围在0至20°之间,均可以视为二者的转动角度保持一致。这样一来,借助同步机构可以实现两个第一摆臂233的同步同角度转动,以降低折叠屏设备的折叠和展开难度。
由于图18和图19所示转轴机构23的运动具有唯一性,同步机构237设置于任意对称的两个运动结构件之间,均可以带动两侧的轴盖升降***和门板运动***同步运动,因此同步机构237除了可以直接连接于两个第一摆臂233之间外,还可以连接于两个第二摆臂2341之间,或者连接于两个门板摆臂2361之间。同步机构237在连接于两个第二摆臂2341之间时,借助上述轴盖升降***,可以间接带动两个第一摆臂233同步转动。同步机构237在连接于两个门板摆臂2361之间时,借助上述门板运动***,也可以间接带动两个第一摆臂233同步转动。
在一些实施例中,同步机构237连接于两个第二摆臂2341之间,两个第二摆臂2341之间的空间富裕,便于安装该同步机构237。
同步机构237的结构形式有多种。示例的,同步机构237包括偶数个依次啮合的传动齿轮(图中未示出)。具体的,该传动齿轮的数量可以为2个、4个、6个等等。该偶数个传动齿轮包括分别位于首尾位置的第一传动齿轮和第二传动齿轮,该第一传 动齿轮和第二传动齿轮分别用于与两个第二摆臂2341相对固定,且该第一传动齿轮的中心轴线和第二传动齿轮的中心轴线分别与两个第二摆臂2341的转动轴线共线。由此通过该偶数个传动齿轮啮合传动,可以带动两个第二摆臂2341同步摆动。此结构简单,实现方便,且设计的传动齿轮数量越多,传动齿轮在Z轴方向上的高度可以设计得越小,越有利于实现转轴机构23的厚度薄型化,但是传动齿轮的数量越多,结构复杂度越高,传动齿轮的体积越小,加工难度越大,因此可以根据不同的设计需求,综合考虑转轴机构23的薄型化、结构复杂度和加工难度,以选择不同数量的传动齿轮。
又示例的,请参阅图36和图37,图36为图19所示转轴机构23中同步机构237与第二连接件2313、第二摆臂2341、拨动件2343的分解图,图37为图36所示转轴机构23中同步机构237、第二连接件2313、第二摆臂2341和拨动件2343的装配图。在本实施例中,同步机构237包括传动滑块2371。传动滑块2371位于两个第一传动机构的第二摆臂2341之间。同时可选的,传动滑块2371位于图21所示转轴基座231中基座主体2311与第二连接件2313之间。
传动滑块2371沿转轴基座的长度方向(也即是Y轴方向)与转轴基座231可滑动连接。根据前文描述,拨动件2343的转轴部2343a穿设于转轴基座中第二连接件2313的轴套内,并能够在轴套内转动。在此基础上,可选的,传动滑块2371上设有轴套2371a。一些实施例中,轴套2371a的数量为四个,四个轴套2371a中,左侧的两个轴套2371a与左侧拨动件2341中转轴部2343a的第二段2343a2套接,并能够沿该第二段2343a2滑动,右侧的两个轴套2371a与右侧拨动件2341中转轴部2343a的第二段2343a2套接,并能够沿该第二段2343a2滑动。这样一来,将拨动件2343中转轴部2343a的第二段2343a2用作滑动导轨,传动滑块2371通过轴套2371a滑动连接于该滑动导轨上,由此实现了传动滑块2371与转轴基座之间的可滑动连接,此结构简单,无需专门设置滑动导轨,因此能够降低转轴机构23的结构复杂度。
可以知道的是,传动滑块2371上设置的轴套2371a也可以为其他数量,在此不做具体限定。同时,传动滑块2371与转轴基座之间也可以采用其他方式滑动连接,本申请对此不做具体限定。
在上述基础上,请参阅图37,传动滑块2371与两个第二摆臂2341传动连接,以使得:两个第二摆臂2341中,任意一个第二摆臂2341在沿方向a2由展开位置向折叠位置转动时,均能够驱动传动滑块2371沿方向a7(与Y轴方向一致)滑动,并带动另一个第二摆臂2341沿方向a2由展开位置向折叠位置同步转动;相反的,两个第二摆臂2341中,任意一个第二摆臂2341在沿方向a2的反方向由折叠位置向展开位置转动时,均能够驱动传动滑块2371沿方向a7的反方向(也即是Y轴方向的反方向,也即是-Y轴方向)滑动,并带动另一个第二摆臂2341沿方向a2的反方向由折叠位置向展开位置同步转动。其中,需要说明的是,第二摆臂2341的展开位置是指当转轴机构23处于展开状态时,第二摆臂2341所处的位置;第二摆臂2341的折叠位置是指当转轴机构23处于折叠状态时,第二摆臂2341所处的位置。
在上述基础上,借助轴盖升降***,可以间接带动转轴机构23中的两个第一摆臂同步转动。
此同步机构237在Z轴方向上的占用高度较小,能够减小转轴机构23的厚度,有 利于折叠屏设备的薄型化。
在上述实施例中,传动滑块2371与第二摆臂2341的传动连接方式包括但不限于借助丝杆和螺母组成的结构传动连接、借助螺旋滑槽和滑块组成的结构传动连接或者借助蜗轮和蜗杆组成的结构传动连接,在此不做具体限定。
在一些实施例中,请参阅图36和图37,第二摆臂2341上设有螺旋滑槽2372,传动滑块2371上设有滑块2373。在其他一些实施例中,螺旋滑槽2372与滑块2373的设置位置可以互换,也即是,螺旋滑槽2372设置于传动滑块2371上,滑块2373设置于第二摆臂2341上。螺旋滑槽2372的螺旋延伸路径的中心线与传动滑块2371的可滑动方向(也即是Y轴方向)平行。滑块2373可滑动设置于螺旋滑槽2372内,也就是说,滑块2373设置于螺旋滑槽2372内,且滑块2373能够沿螺旋滑槽2372的延伸方向滑动。
这样一来,两个第二摆臂2341中,任意一个第二摆臂2341在沿方向a2由展开位置向折叠位置转动时,能够借助第二摆臂2341上的螺旋滑槽2372,驱动传动滑块2371沿方向a7滑动,并借助传动滑块2371上的滑块2373,带动另一个第二摆臂2341沿方向a2由展开位置向折叠位置同步转动。相反的,两个第二摆臂2341中,任意一个第二摆臂2341在沿方向a2的反方向由折叠位置向展开位置转动时,能够借助第二摆臂2341上的螺旋滑槽2372,驱动传动滑块2371沿方向a7的反方向滑动,并借助传动滑块2371上的滑块2373,带动另一个第二摆臂2341沿方向a2的反方向由折叠位置向展开位置同步转动。此传动滑块2371与第二摆臂2341的传动连接方式为借助螺旋滑槽和滑块组成的结构传动连接,此结构简单,占用空间较小,有利于转轴机构的结构紧凑化设计。
最后,对图17和图18所示转轴机构23中的阻尼机构238进行介绍:
具体的,阻尼机构238的作用为:在第一摆臂233相对于转轴基座231转动时,向第一摆臂233施加阻尼力,以阻止第一摆臂233转动。这样一来,可以使折叠屏设备保持在某一个、某多个或者任意打开角度位置,以保证折叠屏设备处于这些打开角度位置时的结构稳定性。
阻尼机构238的结构形式有多种,比如采用侧向摩擦片提供阻尼力,又比如采用异形转轴与轴套之间的张紧力提供阻尼力,还比如采用安装于转轴与轴套之间的橡胶、硅胶等弹性材料提供阻尼力,本申请对此不做具体限定。
同时,由于图18和图19所示转轴机构23的运动具有唯一性,阻尼机构238设置于任意运动副位置均可以阻止整个机构运动,因此阻尼机构238除了可以直接设置于第一摆臂233与转轴基座231的转动副部位之外,还可以设置于第二摆臂2341与转轴基座231的转动副部位,或者设置于第一摆臂233与第二摆臂2341的滑动副部位,或者设置于拨动件2343与轴盖232的滑动副部位,或者设置于门板运动***中的各运动副连接部位,在此不做具体限定。下文是以阻尼机构238设置于第一摆臂233与第二摆臂2341的滑动副部位为例进行说明,这并不能认为是对本申请构成的特殊限制。
具体的,请参阅图38和图39,图38为图19所示转轴机构23中阻尼机构238与第一摆臂233、第二摆臂2341的装配图,图39为图38所示转轴机构23中阻尼机构238、第一摆臂233、第二摆臂2341的分解图。本实施例中,阻尼机构238的数量为 两个,两个阻尼机构238分别连接于两侧的第一摆臂233与第二摆臂2341之间,下文各实施例是以连接于左侧的第一摆臂233与第二摆臂2341之间的阻尼机构238为例进行介绍,右侧的阻尼机构238与左侧的阻尼机构238结构形式相同,下文不作赘述。
请参阅图38和图39,第二摆臂2341上第一滑槽2342a沿转轴基座231的长度方向(也即是Y轴方向)的一端端面为摩擦面2341c。需要说明的是,本实施例所述的第一滑槽2342a并非指第二摆臂2341上非实体的滑槽空间,而是指由第二摆臂2341上非实体的滑槽空间以及围成该滑槽空间的实体侧壁组成的整体,摩擦面2341c设置于围成该滑槽空间的实体侧壁上。
在上述基础上,阻尼机构238与第一滑动件2342b连接,第一滑动件2342b在沿第一滑槽2342a滑动时,可以带动阻尼机构238沿摩擦面2341c移动。
阻尼机构238包括摩擦件2381和弹性件2382。在图38和图39所示的实施例中,阻尼机构238的摩擦件2381和弹性件2382均套接于第一滑动件2342b上。在其他一些实施例中,阻尼机构238的弹性件2382可以固定于第一滑动件2342b上,本申请对此不做具体限定。摩擦件2381位于摩擦面2341c所朝向的一侧,弹性件2382用于向摩擦件2381施加指向摩擦面2341c的弹性力,以使摩擦件2381与摩擦面2341c抵接。其中,“抵接”表示二者接触且相互之间具有一定的挤压力。这样一来,第一滑动件2342b在沿第一滑槽2342a滑动时,摩擦件2381与摩擦面2341c之间产生摩擦力,该摩擦力形成阻尼力,用于阻止第一滑动件2342b与第一滑槽2342a相对滑动,从而阻止第一摆臂233相对于转轴基座转动。此结构简单,容易实现。
在上述实施例中,弹性件2382可以为螺旋弹簧、橡胶或者硅胶等弹性材料。在图38和图38所示的实施例中,弹性件2382为螺旋弹簧,螺旋弹簧的弹性较大,稳定性较优,寿命较长,能够保证转轴机构23的结构稳定性,延长使用寿命。
在一些实施例中,请参阅图38,摩擦面2341c为凸轮面,凸轮面包括沿第一滑槽2342a的长度方向依次设置的第一底部区域2341c1、上升区域2341c2、顶部区域2341c3、下降区域2341c4和第二底部区域2341c5。当第一摆臂233处于展开位置时,摩擦件2381与第一底部区域2341c1接触。当第一摆臂233由展开位置向折叠位置转动时,摩擦件2381与摩擦面2341c抵接,并依次沿上升区域2341c2、顶部区域2341c3、下降区域2341c4滑动。此时,摩擦件2381与摩擦面2341c产生阻尼力以阻止二者相对滑动,当第一摆臂233处于折叠位置时,摩擦件2381与第二底部区域2341c5接触。这样一来,转轴机构23在展开状态与折叠状态之间转动时,需要克服摩擦件2381与摩擦面2341c产生阻尼力,在无外力作用时,转轴机构23可以保持在展开状态和折叠状态,与用户使用习惯相符合。
在一些实施例中,请继续参阅图38和图39,第一滑槽2342a的数量为两个,两个第一滑槽2342a沿Y轴方向间隔设置且相对固定,两个第一滑槽2342a的摩擦面2341c相对设置。在此基础上,阻尼机构238设置于两个第一滑槽2342a之间,摩擦件2381的数量为两个,弹性件2382位于两个摩擦件2381之间,弹性件2382同时向两个摩擦件2381施加指向对应的摩擦面2341c的弹性力,以使两个摩擦件2381分别与对应的摩擦面2341c抵接。这样一来,转轴机构23在展开状态与折叠状态之间转动时,阻尼机构238产生的阻尼力较大,需要施加的驱动力较大,转轴机构23能够稳定 保持在展开状态或者折叠状态,由此提高了转轴机构23的使用稳定性。
以上各实施例介绍了图17所示转轴机构23的第一转轴部分23a,第三转轴部分23c的结构形式与第一转轴部分23a的结构形式相同,在此不做赘述。第二转轴部分23b与第一转轴部分23a、第三转轴部分23c的结构形式有差异,且第一转轴部分23a、第二转轴部分23b和第三转轴部分23c共用同一转轴基座231。
下面介绍第二转轴部分23b的具体结构。
请参阅图40和图41,图40为图17所示转轴机构23中区域II的结构示意图,本附图中隐藏了门板235,图41为图40所示转轴机构23隐藏基座主体2311和第二摆臂2341后的结构示意图。转轴基座231还包括第三连接件2314。第三连接件2314与基座主体2311固定。
在一些实施例中,第三连接件2314上设有轴套2314a,轴套2314a内设有圆柱形轴孔。一些实施例中,轴套2314a的数量为四个。四个轴套2314a中,位于左侧的两个轴套2314a与图21所示转轴基座231中第二连接件2313的左侧两个轴套2313a同轴设置,位于右侧的两个轴套2314a与图21所示转轴基座231中第二连接件2313的右侧两个轴套2313a同轴设置。
在上述基础上,第二转轴部分23b也包括第二摆臂2341和拨动件2343。第二转轴部分23b中第二摆臂2341和拨动件2343分别与第一转轴部分23a中第二摆臂2341和拨动件2343近似相同。第二摆臂2341和拨动件2343的数量均为两个。两个拨动件2343中,位于左侧的拨动件2343的转轴部2343a套设于第三连接件2314上位于左侧的两个轴套2314a内,并能够在该两个轴套2314a内转动,位于右侧的拨动件2343的转轴部2343a套设于第三连接件2314上位于右侧的两个轴套2314a内,并能够在该两个轴套2314a内转动。转轴部2343a的侧面设有扁位n。第二摆臂2341上设有扁位孔2341a,扁位孔2341a的形状尺寸与转轴部2343a的截面形状相适应。两个第二摆臂2341中,位于左侧的第二摆臂2341设置于第三连接件2314上位于左侧的两个轴套2314a之间,并借助扁位孔2341a套设于左侧拨动件2343的转轴部2343a上;位于右侧的第二摆臂2341设置于第三连接件2314上位于右侧的两个轴套2314a之间,并借助扁位孔2341a套设于右侧拨动件2343的转轴部2343a上。由此实现了拨动件2343与第二摆臂2341的相对固定。
第二摆臂2341上设有第一滑槽2342a。在此基础上,中框上设有第一滑动件(图中未示出),第一滑动件滑动连接于第一滑槽2342a内。
轴盖232上设有升降滑块232a,升降滑块232a上设有第二滑槽2344a,请参阅图42和图43,图42为图40所示转轴机构23在E-E线处的截面结构示意图,在本附图中转轴机构23处于展开状态,图43为图42所示转轴机构23处于半折叠状态时的结构示意图,拨动件2343的偏心凸出部(也即是第二滑动件2344b)设置于第二滑槽2344a内并能够沿第二滑槽2344a滑动。
这样一来,当第一转轴部分23a中第一摆臂233由展开位置向折叠位置转动时,可以借助中框上的第一滑动件拨动第一滑槽2342a,以使得第二转轴部分23b内的第二摆臂2341沿方向a2转动,在第二摆臂2341转动的过程中,拨动件2343随之转动,以进一步借助偏心凸出部拨动第二滑槽2344a,以带动轴盖232上升。相反的,当第 一转轴部分23a中第一摆臂233由折叠位置向展开位置转动时,可以借助中框上的第一滑动件拨动第一滑槽2342a,以使得第二转轴部分23b内的第二摆臂2341沿方向a2的反方向转动,在第二摆臂2341转动的过程中,拨动件2343随之转动,以进一步借助偏心凸出部拨动第二滑槽2344a,以带动轴盖232下降。
由此在设置第一转轴部分23a和第三转轴部分23b的基础上,还设置了上述第二转轴部分23b,上述第二转轴部分23b用于对轴盖232的升降起到辅助支撑作用,以使得轴盖232沿其长度方向的各部分均能够同步升降,提升升降的稳定性。且第二转轴部分23b的结构简单,能够简化转轴机构23的结构复杂度。
可以知道的是,第二转轴部分23b也可以有其他结构形式,比如第二转轴部分23b的结构形式与第一转轴部分23a、第三转轴部分23b的结构形式相同,本申请对此不做具体限定。
在本说明书的描述中,具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
最后应说明的是:以上实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。
Claims (20)
- 一种转轴机构,其特征在于,包括转轴基座、轴盖、第一摆臂和第一传动机构;所述轴盖位于所述转轴基座的背侧;所述第一摆臂可转动连接于所述转轴基座上,且所述第一摆臂能够相对于所述转轴基座在展开位置与折叠位置之间转动;所述第一传动机构连接于所述第一摆臂与所述轴盖之间,所述第一摆臂在由所述展开位置向所述折叠位置转动时,借助所述第一传动机构,带动所述轴盖朝向所述转轴基座运动。
- 根据权利要求1所述的转轴机构,其特征在于,所述第一传动机构包括第二摆臂;所述第二摆臂可转动连接于所述转轴基座上,所述第一摆臂与所述第二摆臂传动连接,所述第二摆臂与所述轴盖传动连接;所述第一摆臂在由所述展开位置向所述折叠位置转动时,带动所述第二摆臂相对于所述转轴基座转动,并进一步借助所述第二摆臂带动所述轴盖朝向所述转轴基座运动。
- 根据权利要求2所述的转轴机构,其特征在于,所述第一传动机构包括第一滑槽和第一滑动件;所述第一滑槽和所述第一滑动件中的一个设置于所述第一摆臂上,所述第一滑槽和所述第一滑动件中的另一个设置于所述第二摆臂上,所述第一滑动件滑动连接于所述第一滑槽内;所述第一摆臂借助所述第一滑槽和所述第一滑动件组成的滑动副与所述第二摆臂传动连接。
- 根据权利要求3所述的转轴机构,其特征在于,所述第二摆臂与所述转轴基座的转动轴线为第一轴线;所述第一滑槽具有第一端和第二端,所述第一端至所述第一轴线的距离小于所述第二端至所述第一轴线的距离;当所述主摆臂处于展开位置时,所述第一端至折叠屏的垂直距离大于所述第二端至折叠屏的垂直距离,且当所述主摆臂由所述展开位置向所述折叠位置转动时,所述第一滑动件沿所述第一滑槽由所述第一端向所述第二端滑动。
- 根据权利要求2-4任一项所述的转轴机构,其特征在于,所述第一传动机构还包括拨动件;所述拨动件与所述第二摆臂相对固定,所述第二摆臂借助所述拨动件与所述轴盖传动连接。
- 根据权利要求5所述的转轴机构,其特征在于,所述第二摆臂传动连接所述第一摆臂的端部至所述第二摆臂的转动中心的距离为第一距离;所述拨动件传动连接所述轴盖的端部相对于所述第二摆臂的转动中心偏心设置,且所述拨动件传动连接所述轴盖的端部至所述第二摆臂的转动中心的距离为第二距离;所述第一距离小于所述第二距离。
- 根据权利要求5或6所述的转轴机构,其特征在于,所述第一传动机构还包括第二滑槽和第二滑动件;所述第二滑槽和所述第二滑动件中的一个设置于所述拨动件上,所述第二滑槽和所述第二滑动件中的另一个设置于所述轴盖上,所述第二滑动件滑动连接于所述第二滑槽内;所述拨动件借助所述第二滑槽和所述第二滑动件组成的滑动副与所述轴盖传动连接。
- 根据权利要求1-7任一项所述的转轴机构,其特征在于,还包括门板和第二传动机构;所述门板可转动连接于所述第一摆臂上,所述第二传动机构连接于所述门板与所述转轴基座之间;所述第一摆臂在由所述展开位置向所述折叠位置转动时,借助所述第二传动机构,带动所述门板靠近所述转轴基座的一端相对于所述门板远离所述转轴基座的一端向远离折叠屏的一侧倾斜。
- 根据权利要求8所述的转轴机构,其特征在于,所述第二传动机构包括门板摆臂,所述门板摆臂可转动连接于所述转轴基座上;所述门板上设置有第三滑槽,所述门板摆臂可滑动穿设于所述第三滑槽内,所述第一摆臂在由所述展开位置转动至所述折叠位置时,带动所述门板摆臂相对于所述转轴基座的转动角度大于所述第一摆臂相对于所述转轴基座的转动角度。
- 根据权利要求2-7任一项所述的转轴机构,其特征在于,所述第一摆臂的数量为两个,两个所述第一摆臂对称设置于所述转轴基座的相对两侧;所述第一传动机构的数量为两个,两个所述第一传动机构分别连接于两个所述第一摆臂与所述轴盖之间;所述转轴机构还包括同步机构;所述同步机构连接于两个所述第一摆臂之间,或者,所述同步机构连接于两个所述第一传动机构的第二摆臂之间。
- 根据权利要求10所述的转轴机构,其特征在于,所述同步机构包括传动滑块,所述传动滑块位于两个所述第一传动机构的第二摆臂之间;所述传动滑块沿所述转轴基座的长度方向与所述转轴基座可滑动连接,且所述传动滑块与两个所述第一传动机构的第二摆臂传动连接;两个所述第一传动机构的第二摆臂中,任意一个第二摆臂在由展开位置向折叠位置转动时,驱动所述传动滑块沿所述转轴基座的长度方向滑动,并带动另一个第二摆臂由展开位置向折叠位置同步转动。
- 根据权利要求11所述的转轴机构,其特征在于,所述传动滑块上设有螺旋滑槽和滑块中的一个,所述第二摆臂上设有螺旋滑槽和滑块中的另一个;所述螺旋滑槽的螺旋延伸路径的中心线与所述传动滑块的可滑动方向平行,所述滑块可滑动设置于所述螺旋滑槽内。
- 根据权利要求3所述的转轴机构,其特征在于,还包括阻尼机构;所述阻尼机构设置于所述第一摆臂与所述转轴基座之间,或者,所述阻尼机构设置于所述第一滑槽与所述第一滑动件之间,或者,所述阻尼机构设置于所述第二摆臂与所述转轴基座之间。
- 根据权利要求13所述的转轴机构,其特征在于,所述第一滑槽沿所述转轴基 座的长度方向的一端端面为摩擦面;所述阻尼机构与所述第一滑动件连接,所述第一滑动件在沿所述第一滑槽滑动时,带动所述阻尼机构沿所述摩擦面移动;所述阻尼机构包括摩擦件和弹性件,所述摩擦件位于所述摩擦面所朝向的一侧,所述弹性件用于向所述摩擦件施加指向所述摩擦面的弹性力,以使所述摩擦件与所述摩擦面抵接。
- 根据权利要求14所述的转轴机构,其特征在于,所述摩擦面为凸轮面,所述凸轮面包括沿所述第一滑槽的长度方向依次设置的第一底部区域、上升区域、顶部区域、下降区域和第二底部区域;当所述第一摆臂处于所述展开位置时,所述摩擦件与所述第一底部区域接触;当所述第一摆臂由所述展开位置向所述折叠位置转动时,所述摩擦件与所述摩擦面抵接,并依次沿所述上升区域、所述顶部区域、所述下降区域滑动;当所述第一摆臂处于所述折叠位置时,所述摩擦件与所述第二底部区域接触。
- 根据权利要求14或15所述的转轴机构,其特征在于,所述第一滑槽的数量为两个,两个所述第一滑槽沿所述转轴基座的长度方向间隔设置且相对固定,两个所述第一滑槽的摩擦面相对设置;所述阻尼机构设置于两个所述第一滑槽之间,所述摩擦件的数量为两个,所述弹性件位于两个所述摩擦件之间,所述弹性件同时向两个所述摩擦件施加指向对应的摩擦面的弹性力,以使两个所述摩擦件分别与对应的摩擦面抵接。
- 根据权利要求1-16任一项所述的转轴机构,其特征在于,所述第一摆臂在由所述折叠位置向所述展开位置转动时,借助所述第一传动机构,可以带动所述轴盖远离所述转轴基座运动。
- 根据权利要求1-17任一项所述的转轴机构,其特征在于,所述轴盖与所述转轴基座之间设有限位结构,所述限位结构允许所述轴盖沿着所述转轴基座的厚度方向朝向或者远离所述转轴基座移动,阻止所述轴盖沿着与所述转轴基座的厚度方向垂直的平面运动。
- 一种支撑装置,其特征在于,包括第一壳体、第二壳体和权利要求1-18任一项所述的转轴机构;所述转轴机构的第一摆臂的数量为两个,两个所述第一摆臂对称设置于所述转轴基座的相对两侧,两个所述第一摆臂分别与所述第一壳体、所述第二壳体固定。
- 一种折叠屏设备,其特征在于,包括折叠屏和权利要求19所述的支撑装置;所述折叠屏包括第一显示区域、第二显示区域和第三显示区域,所述第三显示区域连接于所述第一显示区域与所述第二显示区域之间;所述第一显示区域设置于所述第一壳体上,所述第二显示区域设置于所述第二壳体上;所述第三显示区域设置于所述转轴机构上。
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