CN116412199A - Hinge mechanism and mobile terminal - Google Patents

Abstract

The invention relates to the technical field of flexible screen mobile terminals, in particular to a hinge mechanism and a mobile terminal. The hinge mechanism includes a gear assembly and two sets of swivel plate assemblies. The rotating plate assembly comprises a rotating plate and a rotating shaft plate, one end of the rotating shaft plate is rotatably connected with the rotating plate, the gear assembly is meshed with one end of the rotating shaft plate away from the rotating plate, the gear assembly is driven to move, a plurality of structural effects are integrated, and assembly errors and processing cost are effectively reduced. Under the effect of gear assembly and commentaries on classics board subassembly, can realize that mobile terminal's synchronous linkage rotates to reduce folding mobile terminal and rotate the extrusion force of in-process to the flexible screen body, reduce the impaired risk of flexible panel, thereby improve flexible panel and mobile terminal's life, and then can satisfy the requirement of different users to hinge mechanism regional subsides screen planarization. The mobile terminal is simple in structure and low in cost, and the service life of the mobile terminal is prolonged.

Description

Hinge mechanism and mobile terminal

Technical Field

The invention relates to the technical field of flexible screen mobile terminals, in particular to a hinge mechanism and a mobile terminal.

Background

Due to the improvement of electronic product technology, the application of flexible screens and foldable screens is increasing. In the prior art, in order to realize that a mobile terminal screen is foldable, the mobile terminal is generally divided into a first housing component and a second housing component, and the first housing component and the second housing component are connected through a hinge mechanism, so that the first housing component and the second housing component can be folded, and meanwhile, the flexible screen is folded.

However, in the existing hinge mechanism, extrusion force is formed on the flexible screen in the movement process of the whole machine, so that the service life of the flexible screen is reduced, and because parts are thinned, the parts of the hinge mechanism are more, and the assembly error is large and the cost is high.

In order to solve the above problems, it is needed to provide a hinge mechanism and a mobile terminal.

Disclosure of Invention

It is an object of the present invention to provide a hinge mechanism that achieves the effects of simplifying the structure, reducing the cost and improving the service life of the flexible screen.

Another object of the present invention is to provide a mobile terminal, through the hinge mechanism, to achieve the effects of simplifying the structure, reducing the cost and improving the service life of the flexible screen.

To achieve the purpose, the invention adopts the following technical scheme:

a hinge mechanism configured to connect a first housing component and a second housing component, the hinge mechanism comprising:

one end of one rotating plate assembly is connected with the first shell assembly, one end of the other rotating plate assembly is connected with the second shell assembly, the rotating plate assembly comprises a rotating plate and a rotating shaft plate, and one end of the rotating shaft plate is rotatably connected with the rotating plate; and

and the gear assembly is meshed with one end of the rotating shaft plate, which is away from the rotating plate.

As an alternative, the rotation shaft plate includes:

a rotating shaft plate body;

the connecting pin is arranged on the rotating shaft plate body, a first sliding groove is formed in the rotating plate, and the connecting pin can penetrate through the first sliding groove to enable the rotating shaft plate body to be rotatably connected with the rotating plate; and

the first gear is arranged on the rotating shaft plate body and meshed with the gear assembly.

As an alternative, the gear assembly includes a fixed base, a connection groove is formed in the fixed base, and the rotating plate includes:

rotating the plate body;

and the connecting part is connected with the rotating plate body, is arranged in the connecting groove and can rotate in the connecting groove.

As an alternative, the swivel plate assembly further comprises:

the connecting plate is connected with the first shell component or the second shell component, a rotating shaft is arranged on the rotating plate, and part of the connecting plate is rotatably connected with the rotating shaft.

As an alternative, the swivel plate assembly further comprises:

the connecting plate is provided with a second sliding groove, and the connecting pin is arranged in the second sliding groove, so that the rotating shaft plate body is rotatably connected with the connecting plate.

As an alternative, the gear assembly further comprises:

a support base; and

the two ends of the gear set are respectively meshed with the two rotating shaft plates;

the gear shafts penetrate through the gear sets and the two rotating shaft plates respectively, the number of the supporting bases is two, and two ends of the gear shafts are rotatably connected with the supporting bases arranged at two ends respectively.

As an alternative, the gear assembly further comprises:

the movable cam is sleeved on the gear shaft;

the fixed cam is sleeved on the gear shaft and arranged on one side of the gear set, which is away from the supporting base, and is connected with the gear set and the two rotating plates, and the fixed cam can drive the movable cam to move along the axial direction of the gear shaft; and

the plurality of resetting pieces are sleeved on the gear shaft, and the resetting pieces are arranged between the supporting base and the movable cam.

As an alternative, a plurality of depressed parts have been seted up on the fixed cam, the depressed part sets up in deviating from the one end of gear train, just the depressed part is followed fixed cam circumference interval sets up, the removal cam includes cam body and a plurality of cam portion, the cam body cover is established on the gear shaft, just the cam portion is followed the cam body is to keeping away from the direction of cam body extends, a plurality of cam portion and a plurality of the depressed part one-to-one sets up.

As an alternative, the hinge mechanism further includes:

and the central plate is covered on the gear assembly, and when the first shell assembly and the second shell assembly are folded along the direction of approaching each other, the two rotating plates and the central plate enclose to form an isosceles triangle.

A mobile terminal, comprising:

a first housing assembly and a second housing assembly; and

the hinge mechanism is characterized in that two ends of the hinge mechanism are respectively connected with the first shell component and the second shell component.

The beneficial effects of the invention are as follows:

the present invention provides a hinge mechanism for connecting a first housing component and a second housing component. The hinge mechanism includes a gear assembly and two sets of swivel plate assemblies. One end of one group of rotating plate components is connected with the first shell component, one end of the other group of rotating plate components is connected with the second shell component, the rotating plate components comprise rotating plates and rotating shaft plates, one end of each rotating shaft plate is rotatably connected with the rotating plate, and the gear components are meshed with one end of the rotating plate back away from the rotating plate, so that the rotating shaft plates have the function of connection and meshed with the gear components, the gear components are driven to move, and a plurality of structural effects are integrated, so that assembly errors and processing cost are effectively reduced. Under the effect of gear assembly and commentaries on classics board subassembly, can realize that mobile terminal's synchronous linkage rotates to reduce folding mobile terminal and rotate the extrusion force of in-process to the flexible screen body, reduce the impaired risk of flexible panel, thereby improve flexible panel and mobile terminal's life, and then can satisfy the requirement of different users to hinge mechanism regional subsides screen planarization.

The invention also provides the mobile terminal, the structure of the mobile terminal is simplified through the hinge mechanism, the cost is reduced, the service life of the flexible screen is prolonged, and the service life of the mobile terminal is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of a mobile terminal in a flattened state according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a folding state of a mobile terminal according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

FIG. 4 is a schematic view of a hinge mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a hinge mechanism according to a second embodiment of the present invention;

FIG. 6 is a cross-sectional view taken at A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken at B-B of FIG. 5;

FIG. 8 is a schematic view of a spindle plate and gear assembly provided in an embodiment of the present invention;

FIG. 9 is a schematic view of a rotor plate assembly according to an embodiment of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at C;

FIG. 11 is a schematic view of a hinge mechanism in a flattened state according to an embodiment of the present invention;

FIG. 12 is a partial enlarged view at D in FIG. 5;

fig. 13 is a schematic cross-sectional view of a folded state of a hinge mechanism according to an embodiment of the present invention.

The figures are labeled as follows:

100-rotating plate assembly; 110-rotating plate; 111-rotating the plate body; 112-a connection; 1121-a mounting slot; 113-a rotation axis; 114-a first chute; 120-a rotating shaft plate; 121-a rotating shaft plate body; 122-connecting pins; 123-a first gear; 130-connecting plates; 131-a second chute; 140-rotating the connecting block;

200-a gear assembly; 210-a fixed base; 211-connecting grooves; 220-supporting a base; 230-gear set; 231-a second gear; 240-gear shaft; 250-moving the cam; 251-cam body; 252-cam portion; 260-fixed cam; 261-a depression; 270-a reset element;

300-a central panel;

400-a first housing assembly;

500-a second housing assembly;

600-hinge housing;

700-flexible screen.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only structural components related to the present invention, not the whole structure, are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication of structures in two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 3, the present embodiment provides a mobile terminal including a hinge mechanism for connecting the first housing assembly 400 and the second housing assembly 500 such that the first housing assembly 400 and the second housing assembly 500 are connected to form an integrated structure, and the first housing assembly 400 and the second housing assembly 500.

As shown in fig. 1 to 3, specifically, the first housing assembly 400 mainly includes a first housing upper cover, a first housing middle cover, and a first housing lower cover, which together form a closed space that can accommodate electronic functional components. The second housing assembly 500 mainly includes a second housing upper cover, a second housing middle cover, and a second housing lower cover, which together form a closed space that can accommodate electronic functional components. It will be appreciated that either the first housing assembly 400 or the second housing assembly 500 further includes a power key, a volume key, a key holder.

Further, the mobile terminal further includes a flexible screen 700, and the flexible screen 700 is attached in the grooves of the first housing upper cover and the second housing upper cover so as to be fixed. The mobile terminal is beneficial to reducing the overall dimension of the mobile terminal by arranging the flexible screen 700, and can meet the requirements of different users.

The detailed structure of the hinge mechanism will now be described with reference to fig. 4 to 13.

As shown in fig. 4 to 6, the hinge mechanism includes a gear assembly 200 and two sets of rotating plate assemblies 100. One end of one group of rotating plate assemblies 100 is connected with the first shell assembly 400, one end of the other group of rotating plate assemblies 100 is connected with the second shell assembly 500, the rotating plate assemblies 100 comprise rotating plates 110 and rotating plates 120, one end of each rotating plate 120 is rotatably connected with the corresponding rotating plate 110, the gear assemblies 200 are meshed with one end of each rotating plate 120, which is away from the corresponding rotating plate 110, so that the rotating plates 120 play a role in connection and are meshed with the gear assemblies 200, the gear assemblies 200 are driven to move, a plurality of structural effects are integrated, and assembly errors and processing cost are effectively reduced. Under the action of the gear assembly 200 and the rotating plate assembly 100, synchronous linkage rotation of the mobile terminal can be realized, so that extrusion force of the foldable mobile terminal to the flexible screen 700 body in the rotation process is reduced, the damage risk of the flexible panel is reduced, the service lives of the flexible panel and the mobile terminal are prolonged, and further the requirements of different users on the screen pasting flatness of the hinge mechanism area can be met.

It will be appreciated that the two sets of swivel plate assemblies 100 are symmetrically disposed on either side of the gear assembly 200. In order to improve the connection stability of the rotating assembly and the gear assembly 200, each group of rotating assembly includes two rotating shaft plates 120, and the two rotating shaft plates 120 are disposed at intervals along the extending direction of the rotating assembly.

Through this hinge mechanism, this mobile terminal simple structure, the cost reduces by a wide margin, and has improved the life of flexible screen 700, and then is favorable to improving mobile terminal's life.

As shown in fig. 6, the hinge mechanism further includes a center plate 300, wherein the center plate 300 covers the gear assembly 200, and when the first housing assembly 400 and the second housing assembly 500 are in a flattened state, the center plate 300 is disposed coplanar with other structures of the mobile terminal, and functions as a seal to prevent the gear assembly 200 from water or dust. When the first housing assembly 400 and the second housing assembly 500 are folded along the directions close to each other, the two rotating plates 110 and the central plate 300 enclose to form an isosceles triangle, synchronous linkage rotation of the mobile terminal can be realized under the action of the gear assembly 200 and the rotating plate assembly 100, so that extrusion force of the foldable mobile terminal to the flexible screen 700 body in the rotation process is reduced, the damage probability of the flexible panel is reduced, the service lives of the flexible panel and the mobile terminal are prolonged, and further the requirements of different users on the screen pasting flatness of the hinge mechanism area can be met. Illustratively, the two pivoting plates 110 are angled at 16 ° after folding, which is small to enable folding of the first housing assembly 400 and the second housing assembly 500 and to reduce extrusion of the flexible screen 700.

With continued reference to fig. 6, the hinge mechanism further includes a hinge housing 600, wherein the arcuate surface of the hinge housing 600 is hidden inside the first housing assembly 400 and the second housing assembly 500 when the mobile terminal is unfolded, and is exposed as part of the appearance of the mobile terminal when the mobile terminal is folded.

With continued reference to fig. 6, as an alternative, the rotation shaft plate 120 includes a rotation shaft plate body 121, a connection pin 122, and a first gear 123. Wherein, the connecting pin 122 is disposed on the rotating shaft plate body 121, the rotating plate 110 is provided with a first sliding groove 114, the connecting pin 122 can pass through the first sliding groove 114, so that the rotating shaft plate body 121 and the rotating plate 110 can be rotatably connected, the first gear 123 is disposed on the rotating shaft plate body 121, and the first gear 123 is meshed with the gear assembly 200. The rotating shaft plate 120 is located between the gear assembly 200 and the rotating plate 110, and the first gear 123 of the rotating shaft plate 120 is meshed with the gear assembly 200, so that the rotating shaft plate 120 can be completely hidden in the hinge mechanism, and the frame covering area does not need to be widened on the front appearance surface of the mobile terminal, so that the frame of the mobile terminal can be made very narrow, and the appearance width of the side edge of the mobile terminal can be about 1.5mm at present.

With continued reference to fig. 6, the connection pin 122 slides in the first sliding groove 114, so that the rotating plate 120 and the rotating plate 110 can be connected and fixed relatively in the rotating process of the rotating plate 110, and the connection pin 122 slides in the first sliding groove 114, so as to provide guidance for rotating the rotating shaft, thereby ensuring the connection stability of the rotating plate 110 and the rotating plate 120. Meanwhile, the first gear 123 is engaged with the gear assembly 200 so as to transmit the rotation power of the rotation plate 110 to the gear assembly 200 through the rotation shaft plate 120, thereby realizing the stable rotation of the hinge mechanism. It can be appreciated that two first sliding grooves 111 are formed in the rotating plate 110, and two rotating shaft plates 120 are respectively arranged corresponding to two first sliding grooves, so that two rotating shaft plates 120 are arranged in the extending direction of the rotating plate 110, when the width of the mobile terminal increases, the two rotating shaft plates 120 are simultaneously connected between the rotating plate 110 and the gear assembly 200, which is beneficial to ensuring the consistency of the movement of the rotating plate 110 in the length direction, avoiding the torque generated to the flexible screen 700 when the first housing assembly 400 and the second housing assembly 500 relatively rotate, and improving the service life of the flexible screen 700.

As shown in fig. 7 and 8, further, the gear assembly 200 includes a fixing base 210, a connection groove 211 is formed in the fixing base 210, the rotating plate 110 includes a rotating plate body 111 and a connection portion 112, the connection portion 112 is connected with the rotating plate body 111, the connection portion 112 is disposed in the connection groove 211, the connection portion 112 can rotate in the connection groove 211, the connection groove 211 can provide guidance for the rotation process of the connection portion 112, and the stability of the rotation of the rotating plate 110 is improved, the rotating plate 110 is connected with the gear assembly 200, and the stability of the hinge mechanism is improved. The fixing base 210 mainly plays a supporting and fixing role.

As shown in fig. 9 and 10, further, the connection part 112 has an arc-shaped structure, and the arc-shaped center of the connection part 112 forms a groove coaxial with the connection groove 211, and the rotating plate assembly 100 further includes a rotating connection block 140, in which the rotating connection block 140 is disposed, so as to fix the connection part 112 to the fixing base 210.

With continued reference to fig. 9 and 10, the rotating plate assembly 100 further includes a connection plate 130, the connection plate 130 is connected to the first housing assembly 400 and the second housing assembly 500, and a rotation shaft 113 is disposed on the rotating plate 110, a portion of the connection plate 130 is rotatably connected to the rotation shaft 113, and connection with the first housing assembly 400 or the second housing assembly 500 is achieved through the connection plate 130, so that a movement driving force of the first housing assembly 400 and the second housing assembly 500 is transmitted to the rotating plate assembly 100 and the gear assembly 200. Specifically, on one side of the gear assembly 200, the connection plate 130 is disposed parallel to the rotation plate 110, two ends of the rotation plate 110 are respectively provided with a rotation shaft 113, two ends of the connection plate 130 are respectively provided with a lap joint portion, and the two lap joint portions are respectively erected on the two rotation shafts 113 and can rotate relative to the rotation shafts 113, so that the connection plate 130 can rotate relative to the rotation plate 110, and the relative angle between the rotation plate 110 and the connection plate 130 can be conveniently adjusted. Meanwhile, the connection structures are arranged at the two ends of the rotating plate 110 and the connecting plate 130, so that connection stability in the length direction of the connecting plate 130 is guaranteed, and the relative movement of the connecting plate 130 and the rotating plate 110 is stable.

With continued reference to fig. 9 and 10, further, the connecting plate 130 is provided with a second chute 131, and the connecting pin 122 is disposed in the second chute 131, so that the rotating shaft plate body 121 is rotatably connected with the connecting plate 130, that is, the connecting pin 122 slides in the second chute 131 and the first chute 114 at the same time, so as to control the angle of the rotating plate 110 when the first housing assembly 400 and the second housing assembly 500 are folded, and facilitate ensuring the linkage of the hinge mechanism, and improve the stability of the movement of the hinge mechanism.

Therefore, the main connection relationship between the first housing assembly 400 and the second housing assembly 500 is realized by means of the two oppositely disposed rotating shaft plates 120, the first gear 123 at one end of the two disposed rotating shaft plates 120 is respectively connected with the two fixed cams 260, and the first chute 114 and the second chute 131 of the connecting pin 122 at the other end are connected, so as to realize the connection and transmission of the flattening and folding actions of the first housing assembly 400 and the second housing assembly 500.

As shown in fig. 11, when the mobile terminal is in the flattened state, the connection pin 122 of the rotation shaft plate 120 is located at one end of the first sliding groove 114 and the second sliding groove 131 near the first housing assembly 400 or the second housing assembly 500, and the first sliding groove 114 forms an angle of 10 ° with the second sliding groove 131. When a user gives a rotational force to the first housing assembly 400 or the second housing assembly 500, the first housing assembly 400 and the second housing assembly 500 of the mobile terminal rotate around the center of the first gear 123 of the gear assembly 200, respectively, the connection pin 122 of the rotation plate 120 moves in a straight line in the first sliding groove 114 and the second sliding groove 131, respectively, the rotation plate 110 and the connection plate 130 move in a rotation around the center of the rotation shaft 113, and the rotation plate assembly 100 moves in a rotation around the center of the connection groove 211. When the mobile terminal is in the folded state, the connecting pin 122 of the rotating shaft plate 120 is located at one end, close to the gear assembly 200, of the first sliding groove 114 and the second sliding groove 131, the first sliding groove 114 and the second sliding groove 131 form an included angle of 2 degrees, the two rotating plates 110 form an isosceles triangle space of about 16 degrees, the flexible screen 700 also forms a water drop shape of 16 degrees, and extrusion of the flexible screen 700 is avoided.

As shown in fig. 5, 8 and 12, the gear assembly 200 further includes a support base 220, a gear set 230, and a plurality of gear shafts 240, wherein two ends of the gear set 230 are respectively engaged with the two rotation shaft plates 120, that is, two first gears 123 of the two rotation shaft plates 120 symmetrically disposed at two sides of the gear assembly 200, the plurality of gear shafts 240 respectively pass through the gear set 230 and the two rotation shaft plates 120, the support base 220 is two, and two ends of the gear shafts 240 are respectively rotatably connected with the support base 220 disposed at two ends, so that the rotation shaft plates 120 are driven to rotate when the rotation plate 110 rotates, and the gear set 230 is driven to rotate by the first gears 123 of the rotation shaft plates 120. And the support base 220 has a supporting and fixing function. Further, the gear set 230 includes two parallel and intermeshed second gears 231, the gear shaft 240 includes four, and the four gear shafts 240 are respectively disposed through the two first gears 123 and the two second gears 231.

As shown in fig. 5 and 8 and 12, the gear assembly 200 further includes a fixed cam 260, a moving cam 250, and a plurality of return members 270. Wherein, the moving cam 250 is sleeved on the four gear shafts 240, and the moving cam 250 can move on the four gear shafts 240 along the axial direction of the gear shafts 240 but cannot rotate. The fixed cam 260 is sleeved on the gear shaft 240, the fixed cam 260 is arranged on one side of the gear set 230, which is away from the support base 220, the fixed cam 260 is connected with the gear set 230 and the two rotating plates 110, the fixed cam 260 can drive the movable cam 250 to move along the axial direction of the gear shaft 240, the reset piece 270 is sleeved on the gear shaft 240, the reset piece 270 is arranged between the support base 220 and the movable cam 250, the gear shaft 240 and the reset piece 270 mainly play a damping role, and the first housing assembly 400 and the second housing assembly 500 can stay at any position in the folding process. Specifically, the return member 270 is preferably a spring, which is a conventional component, is easy to purchase, has a long service life, and is low in cost. It is understood that the number of the reset members 270 is four, which is provided corresponding to the number of the gear shafts 240.

As shown in fig. 12, the fixed cam 260 is provided with a plurality of concave portions 261, the concave portions 261 are disposed at one end deviating from the gear set 230, the concave portions 261 are disposed at intervals along the circumferential direction of the fixed cam 260, the movable cam 250 includes a cam body 251 and a plurality of cam portions 252, the cam body 251 is disposed on the gear shaft 240, the cam portions 252 extend along the cam body 251 in a direction away from the cam body 251, and the plurality of cam portions 252 are disposed in one-to-one fit with the plurality of concave portions 261. When the folding device is operated, the first gear 123 drives the second gear 231 to rotate, and then the fixed cam 260 connected with the first gear 123 and the second gear 231 is driven to rotate, because the fixed cam 260 and the movable cam 250 are matched with the cam part 252 through the concave part 261, when the fixed cam 260 rotates, the concave part 261 rotates, and when the freedom degree of the movable cam 250 in the rotating direction is restrained, the side wall of the concave part 261 drives the cam part 252 to move in the direction of sliding out of the concave part 261, even if the movable cam 250 moves in the direction away from the fixed cam 260, when the fixed cam 260 rotates to the next concave part 261 corresponding to the cam part 252, the cam part 252 moves towards the fixed cam 260 again under the thrust of the reset piece 270, so that the cam part 252 slides into the concave part 261, and the relative positions of the first housing assembly 400 and the second housing assembly 500 are locked at the moment, and therefore the first housing assembly 400 and the second housing assembly 500 can stay at any positions in the folding process.

It can be seen that the four fixed cams 260 mainly transmit the rotation torque of the mobile terminal to the second housing assembly 500 of the mobile terminal synchronously when the first housing assembly 400 is rotated or to the first housing assembly 400 of the mobile terminal synchronously when the second housing assembly 500 is rotated, thereby realizing the simultaneous flattening and folding of the first housing assembly 400 and the second housing assembly 500 of the mobile terminal.

It can be appreciated that in order to improve the stability of the movement of the hinge mechanism, the gear assemblies 200 are provided in two groups, and the two groups of gear assemblies 200 are disposed along the length direction of the rotation plate 110, so that the rotation force of the rotation plate assemblies 100 disposed at both sides of the gear assemblies 200 can be stably transmitted in the gear assemblies 200, and the stability of the flattening or folding movement of the first and second housing assemblies 400 and 500 of the mobile terminal is improved.

The working process of the mobile terminal will now be described with reference to fig. 1 to 13:

as shown in fig. 1 to 13, when the mobile terminal is in the flattened state, the connecting pin 122 of the rotating shaft plate 120 is located at one end of the first sliding groove 114 and the second sliding groove 131 near the first housing assembly 400 or the second housing assembly 500, and the first sliding groove 114 forms an included angle of 10 ° with the second sliding groove 131.

When the mobile terminal needs to be folded, when the user gives a rotational force to the first housing assembly 400 or the second housing assembly 500, the rotation plate 110 can drive the rotation shaft plate body 121 to rotate, the first housing assembly 400 and the second housing assembly 500 of the mobile terminal rotate around the center of the first gear 123 of the gear assembly 200, the connection pin 122 of the rotation shaft plate 120 moves in a straight line in the first chute 114 and the second chute 131, respectively, the rotation plate 110 and the connection plate 130 move in a rotation around the center of the rotation shaft 113, and the rotation plate assembly 100 moves in a rotation around the center of the connection slot 211. The first gear 123 and the second gear 231 rotate under the meshing action to drive the fixed cam 260 to rotate. The recess 261 of the fixed cam 260 can drive the moving cam 250 to move in a direction away from the fixed cam 260, and at this time, the restoring member 270 is compressed. As the rotation shaft plate 120 rotates, when the cam portion 252 of the moving cam 250 is engaged with the next groove portion, the reset member 270 can drive the moving cam 250 to move toward the fixed cam 260 and then slide into the corresponding groove portion, at which time the relative positions of the first and second housing assemblies 400 and 500 are fixed.

The user continues to drive the first housing assembly 400 and the second housing assembly 500 toward each other, the mobile terminal is in a folded state, as shown in fig. 13, the first housing assembly 400 and the second housing assembly 500 are partially overlapped, the connection pin 122 of the rotation shaft plate 120 is located at the end of the first sliding groove 114 and the second sliding groove 131 near the gear assembly 200, the first sliding groove 114 forms an included angle of 2 ° with the second sliding groove 131, the two rotation plates 110 form an isosceles triangle space of about 16 °, and the flexible screen 700 also forms a water drop shape of 16 °.

Note that the basic principles and main features of the present invention and advantages of the present invention are shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, but rather, the foregoing embodiments and description illustrate the principles of the invention, and that various changes and modifications may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (10)

1. A hinge mechanism configured to connect a first housing assembly (400) and a second housing assembly (500), the hinge mechanism comprising:

two sets of rotating plate assemblies (100), wherein one end of one rotating plate assembly (100) is connected with the first shell assembly (400), one end of the other rotating plate assembly (100) is connected with the second shell assembly (500), the rotating plate assemblies (100) comprise rotating plates (110) and rotating shaft plates (120), and one end of each rotating shaft plate (120) is rotatably connected with the corresponding rotating plate (110); and

and a gear assembly (200), wherein the gear assembly (200) is meshed with one end of the rotating shaft plate (120) away from the rotating plate (110).

2. The hinge mechanism of claim 1, wherein the hinge plate (120) comprises:

a rotating shaft plate body (121);

the connecting pin (122) is arranged on the rotating shaft plate body (121), a first sliding groove (114) is formed in the rotating plate (110), and the connecting pin (122) can penetrate through the first sliding groove (114) to enable the rotating shaft plate body (121) to be rotatably connected with the rotating plate (110); and

and a first gear (123) disposed on the rotation shaft plate body (121), and the first gear (123) is engaged with the gear assembly (200).

3. The hinge mechanism according to claim 1, wherein the gear assembly (200) includes a fixing base (210), a connecting groove (211) is formed in the fixing base (210), and the rotating plate (110) includes:

a rotating plate body (111);

and a connection part (112) connected with the rotating plate body (111), wherein the connection part (112) is arranged in the connection groove (211), and the connection part (112) can rotate in the connection groove (211).

4. The hinge mechanism of claim 1, wherein the swivel plate assembly (100) further comprises:

the connecting plate (130), connecting plate (130) with first shell subassembly (400) or second shell subassembly (500) are connected, just be provided with rotation axis (113) on rotating plate (110), the part of connecting plate (130) with rotation axis (113) rotatable coupling.

5. The hinge mechanism of claim 2, wherein the swivel plate assembly (100) further comprises:

the connecting plate (130), offer second spout (131) on connecting plate (130), connecting pin (122) set up in second spout (131), make pivot board body (121) with connecting plate (130) rotatable coupling.

6. The hinge mechanism of any one of claims 1 to 4, wherein the gear assembly (200) further comprises:

a support base (220); and

the two ends of the gear set (230) are respectively meshed with the two rotating shaft plates (120);

the gear shafts (240) penetrate through the gear sets (230) and the two rotating shaft plates (120) respectively, the number of the supporting bases (220) is two, and two ends of the gear shafts (240) are rotatably connected with the supporting bases (220) arranged at two ends respectively.

7. The hinge mechanism of claim 6, wherein the gear assembly (200) further comprises:

the movable cam (250) is sleeved on the gear shaft (240);

the fixed cam (260) is sleeved on the gear shaft (240), the fixed cam (260) is arranged on one side of the gear set (230) away from the supporting base (220), the fixed cam (260) is connected with the gear set (230) and the two rotating plates (110), and the fixed cam (260) can drive the movable cam (250) to move along the axial direction of the gear shaft (240); and

the plurality of reset pieces (270) are sleeved on the gear shaft (240), and the reset pieces (270) are arranged between the supporting base (220) and the movable cam (250).

8. The hinge mechanism according to claim 7, wherein a plurality of concave portions (261) are formed in the fixed cam (260), the concave portions (261) are disposed at one ends facing away from the gear set (230), the concave portions (261) are disposed at intervals along the circumferential direction of the fixed cam (260), the movable cam (250) comprises a cam body (251) and a plurality of cam portions (252), the cam body (251) is sleeved on the gear shaft (240), and the cam portions (252) extend along the cam body (251) in a direction away from the cam body (251), and the cam portions (252) are disposed in one-to-one fit with the concave portions (261).

9. The hinge mechanism of any one of claims 1-4, further comprising:

and a center plate (300) covering the gear assembly (200), wherein when the first housing assembly (400) and the second housing assembly (500) are folded along the direction approaching to each other, the two rotating plates (110) and the center plate (300) enclose to form an isosceles triangle.

10. A mobile terminal, comprising:

a first housing assembly (400) and a second housing assembly (500); and

hinge mechanism according to any one of claims 1 to 9, connected at both ends to the first housing component (400) and to the second housing component (500), respectively.

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