CN113746967B

CN113746967B - Damping hinge, folding mechanism and electronic equipment

Info

Publication number: CN113746967B
Application number: CN202111074786.8A
Authority: CN
Inventors: 朱娜涛; 徐文亮; 黄强
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2024-03-19
Anticipated expiration: 2041-09-14
Also published as: CN113746967A

Abstract

The application discloses a damping hinge, a folding mechanism and electronic equipment. The damping hinge includes: an outer shaft arranged in a hollow manner; the inner shaft is provided with an inner cavity, the inner shaft is rotatably arranged in the outer shaft, an outer cavity is formed between the inner shaft and the outer shaft, liquid is arranged in the outer cavity and the inner cavity, and a through hole which is suitable for communicating the outer cavity and the inner cavity is formed in the inner shaft; and the piston is movably arranged in the inner cavity, and is used for blocking or opening the through hole so as to adjust the damping of the relative rotation of the outer shaft and the inner shaft.

Description

Damping hinge, folding mechanism and electronic equipment

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to a damping hinge, a folding mechanism and electronic equipment.

Background

The folding screen mobile phone can enlarge the display area of the screen and is widely applied. While an important component of a folding screen handset is the hinge. The hinge is used for assisting the folding screen to fold in half and considering the stability and durability of the folding screen when the folding screen is folded, and is regarded as a core technology of the folding screen mobile phone. However, in the folding and unfolding process, the force of the hinge is difficult to control, or is too loose, so that the folding screen is easy to automatically switch from the unfolded state to the folded state or automatically switch from the folded state to the unfolded state under the gravity, and hovering at a specific angle is difficult to realize between the folded state and the unfolded state. Or the hinge is too tight, so that the folding screen is not easy to unfold and fold, and a user needs to use larger force to change the state of the folding screen, thereby bringing a plurality of inconveniences in use.

Disclosure of Invention

The application aims to provide a damping hinge, a folding mechanism and electronic equipment, and at least one of the problems that a folding screen is too loose or too tight and is not easy to hover at a specific angle is solved.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, embodiments of the present application provide a damped hinge, comprising: an outer shaft arranged in a hollow manner; the inner shaft is provided with an inner cavity, the inner shaft is rotatably arranged in the outer shaft, an outer cavity is formed between the inner shaft and the outer shaft, liquid is arranged in the outer cavity and the inner cavity, and a through hole which is suitable for communicating the outer cavity and the inner cavity is formed in the inner shaft; and the piston is movably arranged in the inner cavity, and is used for blocking or opening the through hole so as to adjust the damping of the relative rotation of the outer shaft and the inner shaft.

In a second aspect, an embodiment of the present application proposes a folding mechanism, including: a first bracket; the damped hinge of any one of the embodiments of the first aspect above, wherein the outer shaft of the damped hinge is connected to the first mount; and the second bracket is in transmission connection with the inner shaft of the damping hinge, and the first bracket and the second bracket realize damping rotation through the cooperation of the outer shaft and the inner shaft.

In a third aspect, an embodiment of the present application provides an electronic device, including: a first frame; a second frame; the folding mechanism according to any one of the embodiments of the second aspect, wherein the first bracket of the folding mechanism is connected to the first frame, the second bracket of the folding mechanism is connected to the second frame, and the folding mechanism is configured to fold the first frame and the second frame.

In the embodiment of the application, the size of the cross-sectional area of the through hole can be changed by plugging or opening the through hole by adopting the piston, so that the flow speed of liquid between the outer cavity and the inner cavity can be changed, and accordingly, the size of the acting force required by the damping hinge during rotation can be changed. Therefore, the tightness of the damping hinge can be adjusted, and the over-loose or over-tight state of the damping hinge is improved. Further, when the through hole is completely blocked, the liquid can no longer flow between the outer cavity and the inner cavity, the damping force reaches the maximum value, and the relative rotation between the outer shaft and the inner shaft can no longer occur. Therefore, as long as the through hole is completely plugged by the piston, the folding screen of the electronic equipment can realize the hovering function at a specific angle.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic perspective view of an outer shaft of a damping hinge according to one embodiment of the present application;

FIG. 2 is a partial perspective view of a damped hinge according to one embodiment of the present application;

FIG. 3 is a partial front view schematic of a damped hinge according to one embodiment of the present application;

FIG. 4 is a partial bottom structural schematic view of a damped hinge according to one embodiment of the present application;

FIG. 5 is a schematic partial cross-sectional structural view of a damped hinge according to one embodiment of the present application;

FIG. 6 is a schematic partial cross-sectional structural view of a damped hinge according to another embodiment of the present application;

FIG. 7 is a partial perspective view of a damped hinge according to one embodiment of the present application;

FIG. 8 is a schematic structural view of a damped hinge according to one embodiment of the present application;

FIG. 9 is a schematic partial cutaway perspective view of a damped hinge according to one embodiment of the present application;

FIG. 10 is a schematic partial cutaway perspective view of a damped hinge according to another embodiment of the present application;

FIG. 11 is a schematic structural view of a folding mechanism according to one embodiment of the present application;

FIG. 12 is a schematic perspective view of a spindle bracket according to one embodiment of the present application;

FIG. 13 is a schematic perspective view, partially in section, of a folding mechanism according to one embodiment of the present application;

FIG. 14 is a schematic diagram of a front view of an electronic device according to one embodiment of the present application;

fig. 15 is a schematic side view of an electronic device according to one embodiment of the present application.

Reference numerals:

the electronic device comprises an electronic device, a 10 damping hinge, a 100 outer shaft, a 1000 outer shaft, a 1002 guide part, a 1004 connecting part, a 102 outer cavity, a 104 inner shaft, a 1040 inner shaft, a 1042 limiting part, a 106 inner cavity, a 108 through hole, a 110 piston, a 112 motor, a 114 screw structure, a 1140 screw, a 116 moving support, a 118 gearbox, a 14 folding mechanism, a 140 first support, a 142 second support, a 144 transmission shaft, a 146 transmission member, a 148 rotating support, a 150 cam, a 152 elastic member, a 154 rotating shaft support, a 156 first blade, a 158 second blade, a 160 first frame, a 162 second frame and a 164 screw.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

A damped hinge, a folding mechanism, and an electronic device according to embodiments of the present application are described below in connection with fig. 1-15.

As shown in fig. 1 to 4, a damped hinge 10 provided according to an embodiment of a first aspect of the present application includes: an outer shaft 100 and an inner shaft 104. The outer shaft 100 is hollow. The inner shaft 104 has an inner lumen 106. The inner shaft 104 is disposed within the outer shaft 100. The inner shaft 104 is rotatable relative to the outer shaft 100. An outer lumen 102 is formed between the inner shaft 104 and the outer shaft 100. The outer chamber 102 and the inner chamber 106 are provided with a liquid. As shown in fig. 2 and 3, the inner shaft 104 is provided with a through hole 108 adapted to communicate between the outer lumen 102 and the inner lumen 106. The damped hinge 10 further includes a piston 110, the piston 110 being movably disposed within the inner cavity 106. Wherein the piston 110 is used to block or unblock the through hole 108 to adjust the amount of damping of the relative rotation of the outer shaft 100 and the inner shaft 104.

According to the damping hinge 10 provided in the embodiment of the first aspect of the present application, the size of the cross-sectional area of the through hole 108 can be changed by plugging or opening the through hole 108 by using the piston 110, so that the flow speed of the liquid between the outer cavity 102 and the inner cavity 106 can be changed, and accordingly, the amount of force required when the damping hinge 10 rotates can be changed. In this way, the magnitude of the acting force required by the rotation of the damping hinge 10 can be changed, that is, the tightness of the damping hinge 10 can be adjusted, the excessively loose or excessively tight state of the damping hinge 10 is improved, the force required by unfolding or folding the electronic device 1 can meet the requirements of users, and convenience is provided for the users. Further, it will be appreciated that the flow rate of the liquid is slower as the cross-sectional area of the piston 110 blocking the through hole 108 is larger. When the through hole 108 is completely blocked, liquid can no longer flow between the outer cavity 102 and the inner cavity 106, at this time, the damping force reaches a maximum value, no relative rotation can occur between the outer shaft 100 and the inner shaft 104, and the hinge can no longer realize the rotation function. Therefore, as long as the through hole 108 is completely blocked using the piston 110, the folding screen of the electronic device 1 can also realize a hovering function at a specific angle.

As shown in fig. 5, 9 and 10, it can be appreciated that when the hinge is too tight, the area of the piston 110 for blocking the through hole 108 can be reduced, and the flow rate and the flow performance of the liquid can be improved, so that the damping force can be reduced, and the folding screen can be easily unfolded and folded. When the hinge is too loose, the area of the piston 110 for blocking the through hole 108 is increased, and the flow speed and the flow performance of liquid are reduced, so that the damping force is improved, and the situation that the state of the folding screen is automatically changed after the folding screen is unfolded or folded is difficult to occur.

As shown in fig. 1, 6 and 7, in the above-described embodiment, the outer shaft 100 includes an outer shaft cartridge 1000, a guide portion 1002 and a connection portion 1004. The outer cartridge 1000 and the guide 1002 are spaced apart, with the guide 1002 being within the outer cartridge 1000. It is understood that the outer cartridge 1000 is a closed cylindrical structure. The guide portion 1002 is an open half-ring or arc-shaped structure. One end of the connection part 1004 is connected to the outer cartridge 1000, and the other end guide part 1002 of the connection part 1004 is connected. By providing the connection portion 1004, the outer shaft cartridge 1000 and the guide portion 1002 are integrally connected to be rotatable in synchronization. Meanwhile, the connection portion 1004 connects the outer shaft 1000 and the guide portion 1002, and the connection portion 1004 is disposed substantially along a radial direction or a chord direction, which can rotate the outer shaft 1000 and the guide portion 1002 under a circumferential force.

The inner shaft 104 includes an inner shaft barrel 1040 and a stop 1042. The inner shaft barrel 1040 encloses the inner lumen 106. The inner barrel 1040 has a through hole 108 formed in the annular wall thereof. The number of the through holes 108 may be one or more. The inner cylinder 1040 is disposed closest to the axis of the damped hinge 10. The inner shaft 104 also includes a stop 1042. The limiting portion 1042 is connected to the inner cylinder 1040. Meanwhile, the limiting portion 1042 is located between the guide portion 1002 and the outer cartridge 1000. With this arrangement, the outer cartridge 1000, the guide portion 1002, the connecting portion 1004, the inner cartridge 1040, and the limiting portion 1042 collectively enclose the outer chamber 102. By rotation of the outer shaft 100 and the inner shaft 104, fluid flows between the inner lumen 106 and the outer lumen 102. When the through hole 108 is completely blocked, the fluid no longer flows and the damping force between the inner shaft 104 and the outer shaft 100 reaches a maximum. It will be appreciated that the outer chamber 102 is substantially divided into two sections, radially on either side of a section of the outer chamber 102, the inner and outer barrels 1040, 1000 respectively, the section of the outer chamber 102 having a larger radial dimension. On both sides of the other part of the outer cavity 102 are an inner shaft cylinder 1040 and a limiting portion 1042, respectively, the radial dimension of the part of the outer cavity 102 being slightly smaller. As the outer shaft 100 rotates, the ratio of the circumferential lengths of the two parts of the outer cavity 102 changes, and accordingly, the volumes of the two parts change, so that the volume of the outer cavity 102 is changed, and the purpose of adjusting the damping force of the hinge can be achieved to a certain extent.

Further, in some embodiments, the outer surface of the limiter 1042 abuts the outer cartridge 1000 and the inner surface of the limiter 1042 abuts the guide 1002. In this way, the sealing effect between the inner shaft 104 and the outer shaft 100 is facilitated to be improved, thereby improving the effect of the piston 110 in adjusting the damping force.

Specifically, as shown in fig. 6 and 7, the outer shaft 100 rotates counterclockwise, the outer chamber 102 becomes smaller, the pressure within the outer chamber 102 becomes greater, and the fluid within the outer chamber 102 flows from the outer chamber 102 to the inner chamber 106, as well as the damping force, which tends to tighten the damping hinge 10, facilitating hovering.

When the damped hinge 10 is unfolded and rotated, the outer shaft 100 is rotated clockwise, the outer cavity 102 is enlarged, the pressure in the outer cavity 102 is reduced, and the liquid in the inner cavity 106 flows from the inner cavity 106 to the outer cavity 102.

In a further embodiment, the connecting portion 1004 is provided at one circumferential end of the guide portion 1002. In other words, one of the two ends of the arc of the guide portion 1002 is provided with a connecting portion 1004. The connecting portion 1004 is disposed at one circumferential end of the guiding portion 1002, which is advantageous for simplifying the structure, and the volume of the outer cavity 102 is not excessively large, which is advantageous for reducing the amount of liquid, saving materials, and easily adjusting the size of the outer cavity 102, so that the damping force adjustment of the damping hinge 10 is more sensitive.

In other embodiments, the connection portion 1004 may be disposed at a position in the middle of the guide portion 1002, that is, at a position between both ends of the guide portion 1002.

In any of the above embodiments, the inner shaft 104 is provided with a plurality of through holes 108. The provision of a plurality of through holes 108 allows more flow passages between the outer chamber 102 and the inner chamber 106, facilitating an increase in the liquid flow rate. Meanwhile, due to the arrangement of the through holes 108, the through holes 108 can be arranged at different positions of the inner shaft 104, so that the flow rate of liquid can be adjusted more finely, the damping force can be adjusted more accurately, and the requirements of users can be met better. The arrangement of the plurality of through holes 108 can also enable the plurality of through holes 108 to be uniformly distributed on the inner shaft 104, and under the condition that the total cross-sectional areas of the through holes 108 are equal, the more the number of the through holes 108 is, the smaller the cross-sectional area of each through hole 108 is, so that the problem that the local structure of the inner shaft 104 is too weak and easy to damage due to the overlarge cross-sectional area of the through hole 108 is avoided. The plurality of through holes 108 are at least partially disposed along the axial direction of the inner shaft 104. The plurality of through holes 108 are arranged along the axial direction of the inner shaft 104, so that the through holes 108 are favorably blocked or opened one by one in sequence along with the movement of the piston 110, thereby enabling the flow rate of liquid to change regularly, correspondingly enabling the damping force of the hinge to change regularly, and facilitating the stepless regulation of the damping force by sequentially blocking or opening the through holes 108 by the piston 110.

In other embodiments, a plurality of through holes 108 are also provided in the circumferential direction of the inner shaft 104. The provision of the plurality of through holes 108 in the circumferential direction can accelerate the flow rate of the liquid.

In a further embodiment, the damped hinge 10 further comprises a drive assembly. The drive assembly is coupled to the piston 110 to drive the piston 110 to reciprocate in the axial direction of the inner chamber 106. The piston 110 reciprocates along the axial direction of the inner cavity 106, so that the through holes 108 can be sequentially plugged or opened, and the purpose of adjusting the damping force of the damping hinge 10 step by step is achieved. This facilitates the hover action of the damped hinge 10 at different positions.

As shown in fig. 8, in particular, the drive assembly includes a lead screw structure 114 and a motor 112. The motor 112 is coupled to a lead screw structure 114. A lead screw structure 114 is coupled to the piston 110. The motor 112 is used to drive the lead screw structure 114 such that the lead screw structure 114 moves the piston 110. The screw rod structure 114 converts the rotary motion into the linear motion, the adjusting force is large and stable, on one hand, the stable rotation of the hinge is realized, and therefore, the folding screen of the electronic equipment 1 is ensured to have certain stability in the rotation process. In addition, the screw structure 114 is adopted, the piston 110 can be driven to do linear motion only when the motor 112 rotates, and the piston 110 is difficult to do rotary motion through the linear motion, so that the degree of freedom of the motion of the piston 110 is more limited, the piston 110 is prevented from automatically doing reciprocating motion under the action of other external forces, the hinge is easy to stop moving through stopping the motion of the piston 110, and accordingly, hovering of the folding screen of the electronic device 1 at a specific angle and the maintenance of the state of the folding screen are easier to achieve.

In some possible embodiments, the drive assembly further includes a motion bracket 116. The motion bracket 116 is connected to the lead screw structure 114 and the piston 110, respectively. By providing the moving bracket 116 instead of directly connecting the screw 1140 and the piston 110, it is possible to realize a side-by-side arrangement of the screw 1140 and the piston 110. I.e. the axis of the screw 1140 and the axis of the piston 110 are arranged in parallel. In this way, the axial length of the damped hinge 10 can be reduced, avoiding the length of the hinge exceeding the length of the electronic device 1 itself. Wherein the screw 1140 is coupled to the piston 110 by the moving bracket 116. It will be appreciated that the kinematic mount 116 radially connects the screw 1140 and the piston 110. So that the screw 1140 and the piston 110 can perform synchronous axial movement.

In some possible embodiments, the drive assembly further includes a gearbox 118. A gearbox 118 is disposed between the motor 112 and the lead screw structure 114. By means of the arrangement of the gearbox 118, the torque received by the screw rod structure 114 can be changed, so that the rotating speed of the screw rod structure 114 is adjusted, the moving speed and the moving stroke of the piston 110 are correspondingly adjusted, the magnitude and the changing amplitude of the damping force of the damping hinge are more accurately adjusted, and accordingly the accuracy of the adjustment of the rotating angle of the folding screen of the electronic equipment 1 can be improved. It will be appreciated that the motor 112 is coupled to the lead screw structure 114 via a gearbox 118.

As shown in fig. 11, an embodiment according to a second aspect of the present application provides a folding mechanism 14, comprising: a first bracket 140; the damped hinge 10 of the embodiment of any one of the first aspects above, the outer shaft 100 of the damped hinge 10 being connected to the first bracket 140. The folding mechanism 14 also includes a second bracket 142. The second bracket 142 is in driving connection with the inner shaft 104 of the damped hinge 10. The first and second brackets 140, 142 provide for dampened rotation through the cooperation of the outer shaft 100 and the inner shaft 104.

The folding mechanism 14 provided according to the embodiment of the second aspect of the present application adopts the damping hinge 10 according to any one of the embodiments of the first aspect, so as to have all the advantages of any one of the embodiments of the first aspect, which are not described herein. By the arrangement of the first bracket 140 and the second bracket 142, the damping hinge 10 is convenient to fix, and relative rotation is realized along with the rotation of the damping hinge 10, so that the unfolding or folding of the folding mechanism 14 is realized.

Further, a plurality of driving members 146 are disposed between the first bracket 140 and the second bracket 142, and a driving shaft 144 is further connected to the inner shaft 104 of the damper hinge 10. The drive shaft 144 is rotatable with the inner shaft 104 and one of a plurality of drive members 146 is coupled to the drive shaft 144 to facilitate torque transfer between the first and second brackets 140, 142 for relative rotation therebetween. Accordingly, the unfolding or folding of the folding mechanism 14 is achieved.

It will be appreciated that the plurality of driving members 146 are drivingly connected to one another. The transmission 146 may be any one of gears, pulleys, sprockets, or a combination of these.

In some embodiments, folding mechanism 14 further includes a swivel bracket 148. The rotating bracket 148 is coupled to the first bracket 140 and the second bracket 142. The rotating bracket 148 is used for supporting the plurality of driving members 146 to ensure the stability and reliability of the operation of the plurality of driving members 146.

In any of the above embodiments, the folding mechanism 14 further includes a cam 150 and an elastic member 152 provided on the second bracket 142. By the provision of the cam 150, the rotation angle and the rotation position of the second bracket 142 are conveniently restricted. The elastic member 152 can provide a certain pretightening force for the hinge, and can also provide an auxiliary force for resetting after the hinge rotates. The elastic member 152 includes any one or a combination of the following: spring, rubber piece, reed.

As shown in fig. 12 and 13, in any of the above embodiments, the folding mechanism 14 further includes a hinge bracket 154. The rotating shaft bracket 154 is connected to the first bracket 140 and the second bracket 142, and the rotating shaft bracket 154 can rotate with the first bracket 140 and the second bracket 142. By the provision of the rotation shaft bracket 154, the first bracket 140 and the second bracket 142 can be supported without affecting the relative rotation of the first bracket 140 and the second bracket 142.

As shown in fig. 14 and 15, the electronic apparatus 1 provided according to the embodiment of the third aspect of the present application includes a first housing 160, a second housing 162, and the folding mechanism 14 as any one of the embodiments of the second aspect described above. The first bracket of the folding mechanism 14 is connected to the first frame 160. The second bracket 142 of the folding mechanism 14 is connected to the second frame 162. The folding mechanism 14 is used for folding the first frame 160 and the second frame 162.

In this embodiment, the folding mechanism 14 according to any one of the second aspect is adopted, so that all the advantages of any one of the second aspect are achieved, and are not described herein. The first bracket 140 is connected with the first frame 160, and the second bracket 142 is connected with the second frame 162, so that the first frame 160 and the second frame 162 can rotate relatively, and the folding function of the electronic device 1 can be realized.

In further embodiments, the electronic device further includes a first blade 156 and a second blade 158. One side of the folding mechanism 14 is provided with a first blade 156 and the other side of the folding mechanism 14 is provided with a second blade 158. The first blade 156 is used to connect the first bracket 140 and the first frame 160. The second blade 158 is used to connect the second bracket 142 and the second frame 162.

It should be noted that the first blade 156 is used to connect to the first frame 160 of the first bracket 140. The second blade 158 is used for connecting the second bracket 142 and the second frame 162 so as to drive the first frame 160 and the second frame 162 to rotate relatively, thereby realizing the folding function of the electronic device 1.

The damped hinge 10 according to one embodiment of the present application can hover to any angle. The damping hinge 10 of this embodiment utilizes the inner shaft 104 and the outer shaft 100 to realize the design of the hinge, simplifying the biaxial design structure of the existing hinge. An outer cavity 102 is designed between the inner shaft 104 and the outer shaft 100, and the outer cavity 102 is filled with liquid such as air or hydraulic oil. The outer chamber 102 changes volume as the damped hinge 10 rotates. The outer chamber 102 has an adjustable cross-sectional area through bore 108 for venting the internal air or hydraulic oil. The damping hinge 10 of this embodiment uses a gear motor in the gearbox 118 to drive the piston 110 to adjust the cross section of the through hole 108, and controls the flow rate of air or hydraulic oil, so as to realize different damping adjustments when the damping hinge 10 rotates. When the cross-sectional area of the through hole 108 is 0, the damping hinge 10 is limited in rotation, and hovering of the rotation angle of the damping hinge 10 can be achieved.

As shown in fig. 1, the damped hinge 10 includes an outer shaft 100, an inner shaft 104. The blades are secured to the outer shaft 100 and the inner shaft 104, respectively, to rotate the left and right folding screens. The inner shaft 104 is provided with a through hole 108. The inner shaft 104 has an array of through holes 108 aligned along the axial direction of the inner shaft 104. A sealed outer lumen 102 is formed between the inner shaft 104 and the outer shaft 100.

When the damping hinge 10 is folded and rotated, the volume of the outer chamber 102 becomes smaller, and the pressure in the outer chamber 102 becomes larger. The liquid, such as air or hydraulic oil, within the outer lumen 102 flows from the outer lumen 102 to the inner lumen 106 in the inner shaft 104.

When the damped hinge 10 is unfolded and rotated, the outer chamber 102 becomes larger, the pressure in the outer chamber 102 becomes smaller, and air or hydraulic oil in the outer chamber 102 flows from the inner chamber 106 to the outer chamber 102.

As shown in fig. 8, the damped hinge 10 further includes a piston 110, a lead screw 1140 of the lead screw structure 114, a gearbox 118, a motor 112, a motion bracket 116, an outer shaft 100, a drive shaft 144, and a drive 146. Wherein the driving member 146 is a gear.

When the motor 112 rotates clockwise, the screw 1140 is driven to rotate, and the screw 1140 drives the moving support 116, so that the moving support 116 moves along with the screw 1140. The motion bracket 116 and the piston 110 are coupled together. The piston 110 is pushed into the inner cavity 106 to sequentially block the plurality of through holes 108, reduce the total sectional area of the through holes 108, control the flow rate of air or hydraulic oil, slow the flow rate and increase the damping.

When the motor 112 rotates counterclockwise, the piston 110 pushes outward, which in turn releases the plurality of through holes 108, thereby increasing the total cross-sectional area of the through holes 108, controlling the flow rate of air or hydraulic oil, and making the flow rate faster and the damping smaller.

The motor 112 further controls the damping amount during the rotation of the damping hinge 10 by controlling the number of the through holes 108 to be opened, thereby realizing the hovering function.

As shown in fig. 11, the present embodiment also provides a folding mechanism 14 including a first bracket 140, a rotating bracket 148, a plurality of transmission members 146, and a cam 150 and an elastic member 152.

The plurality of driving members 146 are gears, and the plurality of gears intermesh and transmit torque. One of which is connected to a drive shaft 144. The outer shaft 100 of the damping hinge 10 is driven by the motor 112 and the volume of the outer cavity 102 thereof is changed. Rotation of the outer shaft 100 drives the transmission 146, i.e. the gear wheel, through the transmission shaft 144. The gears are sequentially meshed and transmit torque to realize the rotation of the cam 150, so that the folding mechanism 14 can achieve a folding effect.

The folding mechanism 14 further includes a spindle bracket 154, a first blade 156, and a second blade 158. The limit mechanism assembly of the whole machine is shown in figure 11. The rotating shaft bracket 154 is designed with a groove structure, the first blade 156 and the second blade 158 are assembled on the rotating shaft bracket 154 in steps, and then the first blade 156 and the second blade 158 are fixed on the first frame 160 and the second frame 162 of the electronic device 1 by bolts 164.

The beneficial effects of this embodiment are: by the above embodiment, the damping of the damping hinge 10 of the electronic device 1 is adjustable, and it is possible to ensure that the damping hinge 10 hovers at an arbitrary angle within the folding range.

The damping hinge of the embodiment is characterized in that the damping is adjustable, the unfolding angle of the damping hinge can be limited, and any modification, equivalent replacement, improvement and the like based on the two characteristics are included in the protection scope of the embodiment.

Other components of the electronic device, such as camera modules and screens, and operations thereof, according to embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A damped hinge, comprising:

an outer shaft arranged in a hollow manner;

the inner shaft is provided with an inner cavity, the inner shaft is rotatably arranged in the outer shaft, an outer cavity is formed between the inner shaft and the outer shaft, liquid is arranged in the outer cavity and the inner cavity, and a through hole which is suitable for communicating the outer cavity and the inner cavity is formed in the inner shaft;

the piston is movably arranged in the inner cavity,

the piston is used for plugging or opening the through hole so as to adjust the damping of the relative rotation of the outer shaft and the inner shaft.

2. The damped hinge of claim 1, wherein said outer shaft comprises:

an outer shaft cartridge;

the guide part is arranged in the outer shaft cylinder and is arranged at intervals with the outer shaft cylinder;

the connecting part is arranged between the outer shaft cylinder and the guide part, one end of the connecting part is connected with the outer shaft cylinder, and the other end of the connecting part is connected with the guide part;

the inner shaft includes:

the inner shaft barrel is enclosed into the inner cavity, and the through hole is formed in the annular wall of the inner shaft barrel;

the limiting part is connected with the inner shaft barrel and is arranged between the guide part and the outer shaft barrel;

the outer shaft cylinder, the guide part, the connecting part, the inner shaft cylinder and the limiting part encircle the outer cavity.

3. The damped hinge of claim 2, wherein the damping hinge comprises a hinge body,

the outer surface of the limiting part is abutted against the outer shaft cylinder, and the inner surface of the limiting part is abutted against the guiding part.

4. A damped hinge according to any one of claims 1 to 3,

the number of the through holes is a plurality of, and at least part of the through holes are arranged along the axial direction of the inner shaft.

5. A damped hinge according to any one of claims 1-3, further comprising:

the driving assembly is connected with the piston and used for driving the piston to move along the axial direction of the inner cavity so as to sequentially block or open a plurality of through holes.

6. The damped hinge of claim 5, wherein said drive assembly comprises:

the screw rod structure is connected with the piston;

and the motor is connected with the screw rod structure and is used for driving the screw rod structure to drive the piston.

7. The damped hinge of claim 6, wherein said drive assembly further comprises:

the moving bracket is connected with the screw rod structure and is also connected with the piston;

the screw rod of the screw rod structure is arranged side by side with the piston, and the screw rod is connected with the piston through the moving bracket.

8. The damped hinge of claim 6, wherein said drive assembly further comprises:

the gearbox is arranged between the motor and the screw rod structure, and the motor is connected with the screw rod structure through the gearbox.

9. A folding mechanism, comprising:

a first bracket;

the damped hinge of any one of claims 1-8, an outer shaft of the damped hinge being connected to the first carriage;

and the second bracket is in transmission connection with an inner shaft of the damping hinge, and the first bracket and the second bracket realize damping rotation through the cooperation of the outer shaft and the inner shaft.

10. The folding mechanism of claim 9, further comprising:

the transmission shaft is connected with the inner shaft of the damping hinge and rotates along with the inner shaft;

the transmission parts are in transmission connection with each other, and one of the transmission parts is arranged on the transmission shaft;

another of the plurality of transmission members is connected to the second bracket and transmits torque.

11. The folding mechanism of claim 10, further comprising:

the rotating support is connected to the first support and the second support and is used for supporting a plurality of transmission pieces.

12. The folding mechanism of claim 10 or 11, further comprising:

and the cam is arranged on the second bracket and used for limiting.

13. The folding mechanism of claim 10 or 11, further comprising:

the elastic piece is arranged on the second bracket and is used for providing pretightening force.

14. The folding mechanism of claim 10 or 11, further comprising:

the rotating shaft support is connected with the first support and the second support and can rotate along with the first support and the second support.

15. An electronic device, comprising:

a first frame;

a second frame;

a folding mechanism according to any one of claims 9 to 14, a first support of the folding mechanism being connected to the first frame and a second support of the folding mechanism being connected to the second frame, the folding mechanism being for folding the first and second frames.

16. The electronic device of claim 15, wherein the electronic device further comprises:

the first blade is arranged on one side of the folding mechanism and is used for connecting the first bracket and the first frame body;

the second blade is arranged on the other side of the folding mechanism and is used for connecting the second bracket and the second frame body.