Hinge structure with length compensation

Abstract

The utility model provides a hinge structure with length compensation, which comprises a co-acting mechanism and a compensation mechanism, the co-acting mechanism comprises a plurality of rotating shafts and a co-acting component, the rotating shafts are arranged in parallel along a length direction, the co-acting component is provided with two through holes, and the compensation mechanism is arranged in the through holes. The two adjacent rotating shafts axially penetrate through the two penetrating holes to be arranged in the synchronous moving assembly in a sleeved mode, the compensation mechanism is arranged at at least one end in the length direction, the compensation mechanism comprises a compensation gear set and a rack, the compensation gear set is connected with the rotating shaft located at the end and meshed with the rack, and when the rotating shaft located at the end rotates, the compensation gear set is meshed with the rack. The compensation gear set rotates to displace the rack in the length direction. The hinge structure with the length compensation function is used for solving the problem that the length of a hinge is changed due to different bending states, and the problem that elements connected with the hinge are damaged due to extrusion or deformation is solved.

Description

Technical Field

[0001] The utility model relates to a hinge structure, and more particularly to a length-compensated hinge structure. Background Art

[0002] A hinge is a common device that is set between two solid components and allows the two to rotate relative to each other. It is currently widely used in some electronic products, such as computers or mobile phones. With the advancement of technology, the rigid display screens of traditional mobile phones have been replaced by flexible display screens. Therefore, mobile phones have become foldable through the application of hinges and flexible display screens.

[0003] However, when the two solid components (upper and lower bodies) of the foldable phone rotate relative to each other due to external force, the hinge and the flexible display screen are bent together, and the length of the hinge is shortened. The shortened hinge will pull the flexible display screen connecting the two solid components, which may cause the flexible display screen to be over-extruded or deformed unexpectedly at the bend, thereby damaging the flexible display screen. Utility Model Content

[0004] Therefore, in order to solve the various problems that the flexible display screen is easily damaged when the existing hinge is used in a folded mobile phone, the utility model proposes a hinge structure with length compensation.

[0005] To achieve the above-mentioned and other purposes, the utility model proposes a hinge structure with length compensation, which includes: a co-acting mechanism, including a plurality of rotating shafts and a co-acting component, the plurality of rotating shafts are arranged parallel to each other along a length direction, the co-acting component has two through holes, two rotating shafts adjacent to each other axially pass through the two through holes and are sleeved in the co-acting component; and a compensation mechanism, arranged at at least one end in the length direction, the compensation mechanism includes a compensation gear set and a rack, the compensation gear set is connected to the rotating shaft located at the end and meshes with the rack, wherein, when the rotating shaft located at the end rotates, the compensation gear set rotates to cause the rack to move along the length direction.

[0006] In one embodiment of the utility model, the compensation gear set includes a first gear, a second gear and a third gear, the first gear includes a sleeve portion and a first tooth portion located on one side of the sleeve portion, the rotating shaft located at the end is sleeved on the sleeve portion, the second gear includes a pivot and a second tooth portion connected to the pivot, the second tooth portion is meshed with the first tooth portion, and the third gear is sleeved on the pivot and meshes with the rack.

[0007] In an embodiment of the present invention, when the number of the plurality of rotating shafts is two, the synchronous assembly comprises a plurality of linkage members, each of which has a linkage tooth portion at one end, and the linkage tooth portion is meshed with another adjacent linkage tooth portion.

[0008] In one embodiment of the utility model, the number of the multiple rotating shafts is more than three, and the synchronous assembly includes a plurality of linkage parts and at least one synchronous component. The at least one synchronous component is respectively provided with synchronous tooth portions at both ends in the length direction, and each of the synchronous components is provided with the two through holes. The plurality of linkage parts are respectively sleeved on the multiple rotating shafts located at both ends in the length direction, and one end of each linkage part has a linkage tooth portion, and the linkage tooth portion is meshed with the adjacent synchronous tooth portion.

[0009] In one embodiment of the present invention, the multiple rotating shafts are special-shaped shafts, and the multiple co-moving components include a plurality of round hole co-moving members and a plurality of special-shaped hole co-moving members, the two through holes of each round hole co-moving member are circular, and the shape of the two through holes of each special-shaped hole co-moving member is to match the special-shaped shaft.

[0010] In an embodiment of the present invention, the plurality of circular hole co-moving members and the plurality of irregular hole co-moving members are alternately arranged along the axial direction of the plurality of rotating shafts.

[0011] In one embodiment of the present invention, the synchronous assembly further includes a plurality of rotation limiting members, each of which has a single special-shaped hole and is separately sleeved on each of the rotating shafts.

[0012] In an embodiment of the present invention, the device further comprises at least one base, and the compensation mechanism is disposed on the base.

[0013] In an embodiment of the present invention, the base has a through hole in the length direction, and the rack is movably disposed in the through hole.

[0014] In an embodiment of the present invention, the synchronous assembly includes a plurality of linkage members, one end of each linkage member has a linkage tooth portion, and the other end of each linkage member is disposed on a first receiving portion of the base.

[0015] Thus, the length-compensating hinge structure proposed in the present invention utilizes the rotation of the rotating shaft to drive the compensation gear set to rotate, and the rotation of the compensation gear set is converted into linear motion through the rack, so that the rack is displaced in the length direction, thereby compensating for the shortening of the hinge due to bending and avoiding unexpected tension between the hinge and the connected elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a hinge structure with length compensation according to an embodiment of the utility model.

[0017] Figure 2A An exploded view of a length-compensated hinge structure according to an embodiment of the present invention.

[0018] Figure 2B It is a partial schematic diagram of the compensation mechanism of an embodiment of the utility model.

[0019] Figure 3 It is a partial schematic diagram of the synchronous component of an embodiment of the utility model.

[0020] Figure 4 It is a schematic diagram of the bending of the hinge structure with length compensation according to an embodiment of the utility model.

[0021] Reference numerals

[0022] 100 Length-compensated hinge structure

[0023] 1 Synchronous mechanism

[0024] 11. Axis

[0025] 111 Cap

[0026] 12 Synchronous components

[0027] 121 Synchronous components

[0028] 121a Round hole moving piece

[0029] 121b Special-shaped hole with moving parts

[0030] 122 Linkage

[0031] 123 Rotation limiter

[0032] 1212 Piercing

[0033] 1212a Perforation

[0034] 1212b Perforation

[0035] 1211 Synchronous gear

[0036] 1221 Linking gear

[0037] 13 Shrapnel

[0038] 2 Compensation institutions

[0039] 21 Compensation gear set

[0040] 211 First Gear

[0041] 211a socket part

[0042] 211b First tooth

[0043] 212 Second Gear

[0044] 212a Pivot

[0045] 212b Second tooth

[0046] 213 Third Gear

[0047] 23 Support

[0048] 22 Rack

[0049] 3 Push-out bracket

[0050] 4 Base

[0051] 41 First receiving part

[0052] 42 Second receiving part

[0053] 43 Through hole

[0054] C Compensation length

[0055] d1 length direction

[0056] d2 Axial

[0057] L Original length

[0058] L' Length DETAILED DESCRIPTION

[0059] In order to fully understand the present utility model, the present utility model is described in detail through the following specific embodiments and the accompanying drawings. Those skilled in the art can understand the purpose, features and effects of the present utility model from the contents disclosed in this specification. It should be noted that the present utility model can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present utility model. The following implementation methods will further explain the relevant technical content of the present utility model in detail, but the disclosed content is not intended to limit the scope of the patent application of the present utility model. The description is as follows:

[0060] like Figure 1 and Figure 2A As shown, the length-compensated hinge structure 100 of the embodiment of the present invention comprises: a co-actuating mechanism 1 and a compensating mechanism 2 .

[0061] The synchronous mechanism 1 includes a plurality of rotating shafts 11 and a synchronous assembly 12. The rotating shafts 11 are arranged parallel to each other along a length direction d1. The synchronous assembly 12 has two through holes 1212 (refer to Figure 3), two adjacent rotating shafts 11 pass through two through holes 1212 in the axial direction d2 and are sleeved in the synchronous component 12. The main function of the synchronous component 12 is to make the two adjacent rotating shafts 11 rotate together at the same angle to avoid that when the hinge is bent, one rotating shaft 11 rotates too much and the other rotating shafts 11 rotate too little. In this embodiment, taking six rotating shafts 11 as an example, two adjacent rotating shafts 11 pass through two through holes 1212 of the same synchronous component 12, so the synchronous mechanism 1 has multiple groups of synchronous components 12 to respectively adapt to multiple groups of adjacent rotating shafts 11; when the length-compensated hinge structure 100 is bent 180 degrees, each rotating shaft 11 only needs to rotate 30 degrees relative to each other. However, the utility model is not limited to this, and the actual number of rotating shafts 11 can be adjusted according to the actual needs of the product. A cap 111 can be provided at the end of the rotating shaft 11 to prevent the rotating shaft 11 from slipping out of the synchronous component 12.

[0062] The compensation mechanism 2 is disposed at at least one end in the length direction d1. The compensation mechanism 2 includes a compensation gear set 21 and a rack 22. The compensation gear set 21 is connected to the rotating shaft 11 at the end and meshes with the rack 22. Figure 4 , when the length-compensated hinge structure 100 is bent by an external force, each rotating shaft 11 rotates synchronously at the same angle. The rotation of the rotating shaft 11 at the end in the length direction d1 drives the compensation gear set 21 to rotate, and the rotation of the compensation gear set 21 is converted into linear motion by the rack 22, so that the rack 22 is displaced along the length direction d1. The displacement of the rack 22 is linearly related to the rotation angle of the rotating shaft 11, and the rotation angle of the rotating shaft 11 is also linearly related to the bending angle of the length-compensated hinge structure 100. In other words, as the length-compensated hinge structure 100 is bent, the rack 22 can protrude outward along the length direction d1 to maintain the overall length of the length-compensated hinge structure 100; when the length-compensated hinge structure 100 returns to a non-bent state, the rack 22 moves in the opposite direction and still maintains the overall length of the length-compensated hinge structure 100.

[0063] Through appropriate mechanism design, when the length-compensated hinge structure 100 with an original length of L is bent by an external force and the length changes to L', the rack 22 compensates the length C so that any angle satisfies the relationship of L = L' + 2C, thereby maintaining the overall length of the length-compensated hinge structure 100 (this is the case where both ends of the length-compensated hinge structure 100 have compensation mechanisms 2, if only one end has a compensation mechanism 2, then the relationship is L = L' + C). Wherein L' and C are variables with non-fixed values.

[0064] The following is one of the mechanism design solutions. Figure 2BAs shown, the compensation gear set 21 includes a first gear 211, a second gear 212 and a third gear 213. The first gear 211 includes a sleeve portion 211a and a first tooth portion 211b located at one side of the sleeve portion 211a, and the rotating shaft 11 located at the end is sleeved on the sleeve portion 211a. The second gear 212 includes a pivot 212a and a second tooth portion 212b connected to the pivot 212a, and the second tooth portion 212b is meshed with the first tooth portion 211b. The third gear 213 is sleeved on the pivot 212a and meshes with the rack 22. In this embodiment, the pivot 212a is a special-shaped shaft, and the third gear 213 has a special-shaped hole corresponding to the pivot 212a.

[0065] When the shaft 11 rotates, the first gear 211 rotates synchronously. The first tooth portion 211b engages with the second tooth portion 212b of the second gear 212, causing the second gear 212 to rotate and drive the third gear 213 sleeved on the pivot 212a. Finally, the rotation of the third gear 213 causes the rack 22 to move along the length direction d1.

[0066] In this embodiment, the number of the rotating shafts 11 is six, and the total length of the hinge structure 100 with length compensation when not rotated is 44 mm, and the length after rotating 180 degrees is 38.9 mm, so the length to be compensated is 5.1 mm. This embodiment is designed with compensation mechanisms 2 at both ends, so the compensation mechanism 2 at a single end needs to compensate 2.55 mm.

[0067] Continuing with the above, the compensation mechanism 2 of the utility model has four elements that can be fine-tuned according to needs, namely the number of teeth of the first gear 211, the number of teeth of the second gear 212, the number of teeth of the third gear 213 and the pitch of the rack 22. In the embodiment of the utility model, the number of teeth of the first gear 211 is 28, but because the first gear 211 actually only needs to rotate a certain range of angles, only part of the first tooth portion 211b can be designed without a complete circle of teeth. The number of teeth of the second gear 212 is 8, the number of teeth of the third gear 213 is 14, and the pitch of the rack 22 is 0.63. The calculation formula is as follows:

[0068] {28*[(180 / 6 / 360)] / 8}*14*0.63=2.55 Formula 1

[0069] Wherein, 180 is the rotation degree of the length-compensated hinge structure 100 , 6 is the number of the rotating shafts 11 , and 360 is a rotation period.

[0070] However, the present invention is not limited thereto, and the specific structure of the compensation gear set 21, the number of gears, the module of each gear, the number of teeth, the pitch of the rack 22, the number of rotating shafts 11, the original length L, etc. are all parameters that can be adjusted arbitrarily, and different embodiments can be configured according to actual needs. The present invention is not limited to the above-mentioned specific configuration.

[0071] For example, the figure shows six rotating shafts 11, but the present invention is not limited thereto. In the simplest embodiment, the synchronous mechanism 1 may have only two rotating shafts 11 and a set of synchronous components 12. At this time, when the length-compensated hinge structure 100 is bent 180 degrees, each rotating shaft 11 rotates 90 degrees relative to each other.

[0072] Further, refer to Figure 2A and Figure 4 When there are only two rotating shafts 11, the synchronous assembly 12 includes a plurality of linkage members 122, each linkage member 122 has a linkage tooth portion 1221 at one end, and the linkage tooth portion 1221 is meshed with another adjacent linkage tooth portion 1221. In other words, when there are only two rotating shafts 11, the synchronous assembly 12 causes the two rotating shafts 11 to rotate synchronously through the linkage members 122 meshing with each other.

[0073] Furthermore, if Figure 3As shown, in the embodiment where the number of the rotating shafts 11 is more than three, the synchronous assembly 12 includes a plurality of linkage members 122 and at least one synchronous component 121. If the number of the rotating shafts 11 is exactly three, the number of the lowest synchronous component 121 is one. If the number of the rotating shafts 11 exceeds three, more synchronous components 121 are required. The synchronous components 121 are respectively provided with synchronous tooth portions 1211 at both ends in the length direction, and each synchronous component 121 is provided with two through holes 1212, and these synchronous tooth portions 1211 are used to mesh with other adjacent synchronous tooth portions 1211 or the linkage tooth portions 1221 of the linkage member 122. That is to say, in the case where the number of the rotating shafts 11 is more than three, every two rotating shafts 11 share a synchronous component 121 and pass through the two through holes 1212 of the synchronous component 121 respectively. The linkage members 122 are used to be respectively mounted on the rotating shafts 11 at both ends in the length direction d1. Each linkage member 122 has a linkage tooth portion 1221, and these linkage tooth portions 1221 are meshed with adjacent synchronous tooth portions 1211. For example, in this embodiment, there are six rotating shafts 11, wherein the rotating shafts 11 numbered 2 and 3 share a synchronous member 121, and the rotating shafts 11 numbered 4 and 5 share a synchronous member 121. Then, the rotating shafts 11 (numbered 1 and numbered 6) at both ends in the length direction d1 are respectively mounted with the linkage members 122, and the linkage tooth portions 1221 and the synchronous tooth portions 1211 are synchronously driven. Since the linkage member 122 actually only needs to rotate within a certain range of angles, only a part of the linkage tooth portion 1221 can be designed without a complete circle of teeth. In other words, the linkage member 122 does not need to be a complete gear, but can be a metal sheet with a linkage tooth portion 1221, thereby saving manufacturing costs. Preferably, the rotating shafts 11 (numbered 1 and 6) at the two ends in the length direction d1 can be sleeved with the moving components 121 (shared with the adjacent rotating shafts 11) and the linking member 122 (not shared with the adjacent rotating shafts 11). The rotating shafts 11 (numbered 2 to 5) not at the two ends are sleeved with multiple moving components 121, which are shared with different adjacent rotating shafts 11 respectively.

[0074] The multiple synchronous members 121 are linked by the synchronous teeth 1211, so that the rotation shafts 11 still maintain the same linkage but do not completely lose the freedom of rotation. Similar to the linkage member 122, since the synchronous member 121 actually only needs to rotate within a certain range of angles, only a part of the synchronous teeth 1211 can be designed without a complete circle of teeth. In other words, the synchronous member 121 does not need to be a complete gear, but can be a metal sheet with a synchronous teeth 1211, thereby saving manufacturing costs.

[0075] Furthermore, in this embodiment, these rotating shafts 11 are special-shaped shafts, which refer to shafts whose cross-sections are not perfectly circular. The co-moving member 121 includes a plurality of circular hole co-moving members 121a and a plurality of special-shaped hole co-moving members 121b. The two through holes 1212a of each circular hole co-moving member 121a are circular, and the two through holes 1212b of each special-shaped hole co-moving member 121b are shaped to match the special-shaped shaft and are not perfectly circular. The special-shaped shaft is designed to prevent the rotating shaft 11 from rotating relative to the co-moving member 121. And the circular hole co-moving members 121a and the special-shaped hole co-moving members 121b are arranged alternately along the axial direction d2 of the rotating shaft 11, so that the rotating shaft 11 maintains a certain degree of rotational freedom and does not rotate alone.

[0076] Furthermore, in this embodiment, if Figures 1 to 2B and Figure 4 As shown, the length-compensated hinge structure 100 of the present invention further includes at least one base 4, and the compensation mechanism 2 is disposed on the base 4. Specifically, the compensation mechanism 2 has a support portion 23, and the support portion 23 is disposed on the second receiving portion 42 of the base 4, and the compensation gear set 22 is connected to the support portion 23. Therefore, the compensation gear set 22 is connected to the base 4 through the support portion 23. The specific shape and number of the base 4 are not limited. For example, in the present embodiment, bases 4 are respectively disposed at both ends of the length direction d1, and each base 4 is respectively disposed at both ends of the axial direction d2 with a second receiving portion 42 to connect a support portion 23.

[0077] Furthermore, in this embodiment, if Figure 2A As shown, the base 4 has a through hole 43 in the length direction d1, and the rack 22 is movably disposed in the through hole 43. The base 4 accommodates the rack 22 on one hand, and allows the rack 22 to move along the length direction d1 through the through hole 43 on the other hand.

[0078] Furthermore, in this embodiment, if Figure 1 and Figure 2A As shown, the multiple linkage members 122 included in the synchronous assembly 12 have linkage teeth 1221 at one end, and the other end without linkage teeth 1221 is disposed on a first receiving portion 41 of the base 4. In this embodiment, the first receiving portion 41 and the second receiving portion 42 are both in the form of grooves to accommodate corresponding components, but the utility model is not limited thereto, and the first receiving portion 41 and the second receiving portion 42 can be other shapes or structures to connect / accommodate corresponding components.

[0079] Furthermore, in this embodiment, if Figure 1 , Figure 2A and Figure 4As shown, the length-compensated hinge structure 100 further includes an outward push bracket 3 connected to the end of the rack 22. The outward push bracket 3 can be used to engage an external element connected to the hinge, and can also maintain the contour shape of the length-compensated hinge structure 100, but the outward push bracket 3 is not a necessary element, and its specific shape can also be adjusted accordingly depending on the external element connected to the hinge.

[0080] Furthermore, in this embodiment, the compensation mechanisms 2 are symmetrically arranged at both ends of the length direction d1, and two compensation mechanisms 2 are respectively arranged at both ends of the axial direction d2 of the rotating shaft 11, so that the outward push bracket 3 at a single end can be pushed out by the rack 22 in a balanced and stable manner. In other words, this embodiment has a total of four sets of compensation mechanisms 2.

[0081] However, the present invention is not limited thereto. In other simpler embodiments, only one end may be provided with a compensation mechanism 2, but the compensation mechanism 2 must compensate for a longer length. Alternatively, although both ends of the length direction d1 are provided with compensation mechanisms 2, only one end has a compensation mechanism 2, and the compensation mechanism 2 can be connected to the middle section of the rotating shaft 11 or one end of the axial direction d2. As can be seen from the above, the specific number and configuration position of the compensation mechanism 2 can be changed accordingly according to the needs, and are not limited to the embodiment shown.

[0082] Furthermore, if Figure 2B and Figure 3 As shown, in this embodiment, the synchronous assembly 12 also includes a plurality of rotation limiting members 123, which have a single special-shaped hole and are separately sleeved on each rotating shaft 11. The synchronous mechanism 1 also has at least one spring 13, which is arranged on at least one rotating shaft 11. The spring 13 provides a positive force along the axial direction d2, so that the rotation limiting member 123 between the two synchronous components 121 or the rotation limiting member 123 between the synchronous component 121 and the linking member 122 is pressed by the positive force to generate friction. According to the actual use requirements of the friction force, it can be adjusted by rotating the locking cap 111 or adjusting the type and number of the springs 13. Further, in this embodiment, a plurality of springs 13 are respectively arranged on the rotating shafts of the rotating shafts 11 (for example, number 1 and number 6) at the two ends, and according to the use requirements, springs 13 can also be arranged on each rotating shaft 11.

[0083] The present invention has been disclosed in the above embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the embodiments should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope of the patent application.

Claims

1. A length-compensated hinge structure, characterized in that: Include: A co-actuating mechanism comprises a plurality of rotating shafts and a co-actuating assembly, wherein the plurality of rotating shafts are arranged parallel to each other along a length direction, the co-actuating assembly has two through holes, and two rotating shafts adjacent to each other axially pass through the two through holes and are sleeved in the co-actuating assembly; as well as A compensation mechanism is arranged at at least one end in the length direction, and the compensation mechanism includes a compensation gear set and a rack. The compensation gear set is connected to the rotating shaft located at the end and meshes with the rack, wherein, when the rotating shaft located at the end rotates, the compensation gear set rotates so that the rack is displaced along the length direction.

2. The length-compensated hinge structure according to claim 1, characterized in that: The compensation gear set includes a first gear, a second gear and a third gear. The first gear includes a sleeve portion and a first tooth portion located on one side of the sleeve portion. The rotating shaft located at the end is sleeved on the sleeve portion. The second gear includes a pivot and a second tooth portion connected to the pivot. The second tooth portion is meshed with the first tooth portion. The third gear is sleeved on the pivot and meshes with the rack.

3. The length-compensated hinge structure according to claim 1, characterized in that: When the number of the plurality of rotating shafts is two, the synchronous assembly comprises a plurality of linkage members, each of which has a linkage tooth portion at one end, and the linkage tooth portion is meshed with another adjacent linkage tooth portion.

4. The length-compensated hinge structure according to claim 1, characterized in that: The number of the multiple rotating shafts is more than three, and the synchronous assembly includes multiple linkage parts and at least one synchronous component. The at least one synchronous component is respectively provided with synchronous tooth portions at both ends of the length direction, and each of the synchronous components is provided with the two through holes. The multiple linkage parts are respectively sleeved on the multiple rotating shafts located at both ends of the length direction, and one end of each linkage part has a linkage tooth portion, and the linkage tooth portion is meshed with the adjacent synchronous tooth portion.

5. The length-compensated hinge structure according to claim 4, characterized in that: The multiple rotating shafts are special-shaped shafts, and the multiple co-moving components include multiple round hole co-moving parts and multiple special-shaped hole co-moving parts. The two through holes of each round hole co-moving part are circular, and the shapes of the two through holes of each special-shaped hole co-moving part are matched with the special-shaped shaft.

6. The length-compensated hinge structure according to claim 5, characterized in that: The plurality of circular hole co-moving members and the plurality of irregular hole co-moving members are arranged alternately along the axial direction of the plurality of rotating shafts.

7. The length-compensated hinge structure according to claim 5, characterized in that: The synchronously moving assembly also includes a plurality of rotation limiting members, each of which has a single special-shaped hole and is separately sleeved on each rotating shaft.

8. The length-compensated hinge structure according to claim 1, characterized in that: It also includes at least one base, and the compensation mechanism is arranged on the base.

9. The length-compensated hinge structure according to claim 8, characterized in that: The base has a through hole in the length direction, and the rack is movably arranged in the through hole.

10. The length-compensated hinge structure according to claim 8, characterized in that: The synchronous assembly comprises a plurality of linkage members, one end of each linkage member is provided with a linkage tooth portion, and the other end of each linkage member is arranged on a first receiving portion of the base.

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