Torsion module and double-shaft pivot device with same

Abstract

The utility model relates to a torsion module and a double-shaft pivot device with the torsion module, the torsion module comprises a linkage assembly, two connecting rods and two staddle, one ends of the two connecting rods are respectively and rotatably connected with two opposite side edges of the linkage assembly, each staddle is movably connected with the two connecting rods on the same side, and the two staddle is connected with the linkage assembly. Two elastic connecting rods and an elastic piece are arranged on each staddle, the two elastic connecting rods are pivoted at an interval, two ends of the elastic piece are respectively connected to one ends of the two elastic connecting rods, and the other ends of the two connecting rods respectively form a friction surface which is selectively attached to or separated from the other ends of the two elastic connecting rods; therefore, when the elastic connecting rod is installed on a double-shaft pivot device and folded along with the double-shaft pivot device, obvious and gradually-changed friction force is provided by utilizing separation and reunion of the elastic connecting rod and the friction surface on the connecting rod, so that the operation hand feeling of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a torsion module and a double shaft hinge with the torsion module, especially a torsion module with increased friction and a double shaft hinge with the torsion module. BACKGROUND

[0002] The prior art folding electronic device, especially the folding mobile phone with a flexible screen, includes a double shaft hinge and two plate bodies, the two sides of the double shaft hinge are connected to the two plate bodies, and a flexible screen is arranged thereon, the two plate bodies are pivoted relative to the double shaft hinge to achieve the opening and closing function of the flexible screen. Among them, the double shaft hinge usually has a solid shaft with concave-convex structure, which provides damping effect through the concave-convex structure to keep a certain friction during the opening and closing process of the two plate bodies.

[0003] However, because the overall volume of the current folding electronic device is small, the solid shaft structure of the double shaft hinge can only generate limited friction and torsion, resulting in poor and unclear hand feeling during use. Therefore, it is necessary to improve the foregoing problems. SUMMARY

[0004] In view of the shortcomings of the prior art, the utility model provides a torsion module and a double shaft hinge with the torsion module, which can improve the friction and operation feeling by the configuration of the structure.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of designing a torsion module, which comprises:

[0006] A linkage assembly has two opposite sides;

[0007] Two first connecting rods;

[0008] Two second connecting rods, wherein one end of one of the first connecting rods and one end of one of the second connecting rods are rotatably connected to one side of the linkage assembly, and one end of the other first connecting rod and one end of the other second connecting rod are rotatably connected to the other side of the linkage assembly;

[0009] Two brackets, each bracket is movably connected to the first connecting rod and the second connecting rod on the same side, each bracket is provided with two elastic connecting rods and an elastic member, the two elastic connecting rods are pivotally arranged, and two ends of the elastic member are connected to one end of the two elastic connecting rods, respectively, the other end of each first connecting rod forms a first friction surface, the first friction surface can selectively abut or separate from the other end of one of the elastic connecting rods, and the other end of each second connecting rod forms a second friction surface, the second friction surface can selectively abut or separate from the other end of the other elastic connecting rod.

[0010] To achieve the above-mentioned purpose, the utility model further adopts the technical means of designing a double-shaft pivot device, which comprises:

[0011] At least one torsion module;

[0012] A trajectory module, which comprises a base, two swing arms and two fixed seats, one end of each swing arm is rotatably connected to the base and is oppositely arranged, the other end of each swing arm is connected to the corresponding fixed seat, the torsion module is connected to the trajectory module and can be synchronously pivoted.

[0013] Further, the torsion module, wherein the first friction surface forms a first resistance change section, a first maximum resistance section and a first hook section, the first resistance change section is a lateral outwardly extending slope, the first maximum resistance section is a straight surface connected to the first resistance change section, and the first hook section is a concave surface connected to the first maximum resistance section.

[0014] Further, the torsion module, wherein the second friction surface forms a second resistance change section, a second maximum resistance section and a second hook section, the second resistance change section is a lateral outwardly extending slope, the second maximum resistance section is a straight surface connected to the second resistance change section, and the second hook section is a concave surface connected to the second maximum resistance section.

[0015] Further, the torsion module, wherein the first friction surface and the second friction surface face each other and the two elastic connecting rods are located between the first friction surface and the second friction surface.

[0016] Further, the torsion module, wherein each elastic connecting rod comprises an external connecting part, a pivot part and a top abutting part, the external connecting part penetrates an external connecting hole, the pivot part penetrates a pivot hole, the outer wall surface of the top abutting part is arc-shaped, two ends of the elastic member are respectively connected to the external connecting part of each corresponding elastic connecting rod, a pivot rod is arranged in the support and penetrates the pivot hole, wherein the top abutting part of one elastic connecting rod abuts or separates from the first friction surface, and the top abutting part of the other elastic connecting rod abuts or separates from the second friction surface.

[0017] Further, the torsion module, wherein the external connecting part is connected to one end of the pivot part and extends towards one side, and the top abutting part is connected to the other end of the pivot part and extends towards the opposite direction of the external connecting part.

[0018] Furthermore, in the torque module, the linkage component includes several gears, several idler gears, a first cam, a second cam, a spring assembly, several rotating shafts, and a fixed frame. Each gear is fixedly connected to one of the corresponding first connecting rods. Each gear meshes with the idler gears, causing two gears located on opposite sides to rotate synchronously in opposite directions. The first cam and the second cam are spaced apart. The spring assembly is disposed between the first cam and the second cam and passes through the first cam, the spring assembly, and the second cam via the rotating shafts. Each rotating shaft is pivotally connected to the fixed frame.

[0019] Furthermore, in the torque module, each of the supports has two grooves recessed on one side, and a guide rail is protruding from the inner wall of each groove. Each first connecting rod includes a first connecting part and a first friction part. The first connecting part is connected and fixed to one of the gears. A first guide groove is recessed around the periphery of the first friction part. Each second connecting rod includes a second connecting part and a second friction part. The second connecting part is connected and fixed to the other gear. A second guide groove is recessed around the periphery of the second friction part. The first guide groove and the second guide groove are respectively engaged with the guide rails of the two grooves and can slide along the two grooves.

[0020] Furthermore, in the torque module, each of the supports has a fixed part, two outer limiting parts and an inner limiting part protruding on one side. The fixed part has several pivot holes, and the two elastic connecting rods are pivotally mounted in each of the pivot holes. Each of the outer limiting parts protrudes from the support at intervals, and the inner limiting part protrudes from the support and is arranged at intervals with each of the outer limiting parts. The other end of the two elastic connecting rods is located between each of the outer limiting parts and the inner limiting part.

[0021] The advantage of this invention is that, when applied to foldable electronic devices, during the aforementioned folding process, the structure of the elastic element, elastic link, first link, and second link allows the user to experience a gradual change in friction. Moreover, the sensitivity of friction is significantly improved compared to existing technologies that only utilize concave and convex structures to generate friction. In addition to providing a better and more noticeable experience for the user, the appropriate cushioning provided by the elastic element also increases the overall durability. Attached Figure Description

[0022] Figure 1 This is an exploded view of the electronic device of this utility model.

[0023] Figure 2 This is an exploded view of some components of the electronic device of this utility model.

[0024] Figure 3 This is an external view of the dual-axis pivot of this utility model.

[0025] Figure 4This is an exploded view of the dual-axis pivot of this utility model.

[0026] Figure 5 This is an exploded view of the torque module of this utility model.

[0027] Figure 6 This is a partially enlarged exploded view of the torque module of this utility model.

[0028] Figures 7A-7C This diagram illustrates the opening and closing motion of the dual-axis pivot mechanism of this utility model.

[0029] Figure 8 This is an enlarged view of the torque module of this utility model unfolded at 180 degrees.

[0030] Figure 9 This is an enlarged view of the torque module of this utility model at a 120-degree angle.

[0031] Figure 10 This is an enlarged view of the torque module of this utility model in a closed 0-degree state. Detailed Implementation

[0032] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means employed by the present invention to achieve its intended purpose.

[0033] Please see Figure 1 and Figure 2 As shown, the electronic device used in this utility model is a foldable electronic device, which includes two dual-axis pivots 10, a plate assembly 20, and a flexible screen 30. The two dual-axis pivots 10 are assembled in the plate assembly 20, and the flexible screen 30 is disposed on the plate assembly 20, so that the flexible screen 30 can achieve a folding opening and closing function through each dual-axis pivot 10 and the plate assembly 20. In this embodiment, the plate assembly 20 includes two pieces 21, and the two dual-axis pivots 10 connect the two pieces 21, but this is not a limitation. The plate assembly 20 and the flexible screen 30 are components of the prior art and can be changed according to the user's needs, so their detailed structure will not be described in detail.

[0034] Please see Figures 2-4As shown, each dual-axis pivot 10 includes a trajectory module 11 and a torque module 12. The trajectory module 11 and the torque module 12 are connected and rotate synchronously through the plate assembly 20. The connection method is an application of existing technology and will not be described in detail. The trajectory module 11 includes a base 111, two swing arms 112 and two fixed seats 113. One end of the two swing arms 112 is rotatably connected to the base 111 and is arranged opposite to each other. The other end of the two swing arms 112 is respectively connected to the fixed seats 113. The fixed seats 113 are used to connect the plate body 21 of the plate assembly 20. The trajectory module 11 is used to limit the trajectory and position of the electronic device when it is unfolded and retracted. This is an application of existing technology and can be changed according to the user's needs, so it will not be described in detail.

[0035] Please see Figure 4 and Figure 5 As shown, the torque module 12 includes a linkage assembly 13, two first links 14, two second links 15, two supports 16, four elastic links 17 and two elastic elements 18. The linkage assembly 13 includes several gears 131, several idler wheels 132, a first cam 133, a second cam 134, a spring assembly 135, several rotating shafts 136 and a fixed frame 137. Each gear 131 is fixedly connected to the corresponding first connecting rod 14. Each gear 131 meshes with each idler wheel 132, so that two gears 131 located on opposite sides rotate synchronously in opposite directions. However, this is not a limitation. Gears 131 and idler wheels 132 can also be added to the two second connecting rods 15 on opposite sides. Since each gear 131 is fixedly connected to the corresponding first connecting rod 14, the two first connecting rods 14 and the two second connecting rods 15 located on opposite sides will rotate synchronously in opposite directions. The first cam 133 and the second cam 134 are spaced apart. The spring assembly 135 is located between the first cam 133 and the second cam 134. The first cam 133, the spring assembly 135 and the second cam 134 are passed through each rotating shaft 136. The fixing frame 137 is located on the plate assembly 20. Each rotating shaft 136 is pivotally connected to the fixing frame 137 to position the first cam 133, the spring assembly 135 and the second cam 134 therein.

[0036] Please see Figure 2 , Figures 4-6As shown, since the torque module 12 of this utility model has a symmetrical structure on both sides, the structure of one side is used as an example for explanation. The components on the same side include a support 16, a first connecting rod 14, a second connecting rod 15, two elastic connecting rods 17, and an elastic element 18. Two grooves 161 are recessed on one side of the support 16, and a guide rail 162 is protruding from each groove 161. The guide rail 162 protrudes laterally from the inner wall surface of the groove 161. A fixing part 163 and two elastic elements 18 are protruding from the other side of the support 16. The outer limiting part 164 and the inner limiting part 165 are provided. The fixing part 163 is provided with several pivot holes 166. Each outer limiting part 164 protrudes from the support frame 16 at intervals. The inner limiting part 165 protrudes from the support frame 16 and is arranged at intervals with each outer limiting part 164. An actuation space 167 is formed between each outer limiting part 164 and the inner limiting part 165. However, this is not a limitation. The form of the support frame 16 can be changed according to the user's needs. In this embodiment, the support frame 16 is used to be set on the sheet 21 of the plate assembly 20, but this is not a limitation.

[0037] Please see Figure 2 , Figures 4-6 and Figure 8 As shown, the first connecting rod 14 includes a first connecting portion 141 and a first friction portion 142. The first connecting portion 141 is connected and fixed to the gear 131. A first guide groove 143 and a first friction surface 144 are formed on the periphery of the first friction portion 142. The first guide groove 143 is recessed in the outer wall surface of the first friction portion 142. The first friction surface 144 is located on one side of the outer wall surface of the first friction portion 142 and above the first guide groove 143. The first friction surface 144 forms a first resistance variation section 145 and a first maximum resistance. The first friction surface 144 is a laterally outward inclined surface, the first maximum resistance section 146 is a straight surface that continues the first resistance variation section 145, and the first hook section 147 is an inward concave surface that continues the first maximum resistance section 146, but it is not limited to this. The form of the first friction surface 144 can be changed according to the user's needs. The first connecting rod 14 is connected to one of the guide rails 162 of the support frame 16 by the first guide groove 143 of the first friction part, and the first friction part 142 can slide along the groove 161.

[0038] The second connecting rod 15 includes a second connecting portion 151 and a second friction portion 152. A rotating shaft 136 passes through the second connecting portion 151 and forms a second guide groove 153 and a second friction surface 154 around the periphery of the second friction portion 152. The second guide groove 153 is recessed into the outer wall surface of the second friction portion 152. The second friction surface 154 is located on one side of the outer wall surface of the second friction portion 152 and above the second guide groove 153. The second friction surface 154 forms a second resistance variation section 155, a second maximum resistance section 156, and a second hook section 157. The second resistance variation section 155 is a laterally outward extending slope, the second maximum resistance section 156 is a straight surface continuing from the second resistance variation section 155, and the second hook section 157 is a concave surface continuing from the second maximum resistance section 156, but not limited thereto. The form of the second friction surface 154 can be changed according to the user's needs. The second connecting rod 15 is connected to the other guide rail 162 of the support frame 16 by the second guide groove 153 of the second friction part, and the second friction part 152 can slide along the groove 161. The first friction surface 144 and the second friction surface 154 are arranged opposite to each other.

[0039] The elastic link 17 is a bent rod. Each elastic link 17 sequentially has an outer connecting part 171, a pivot part 172, and a top abutment 173. In this embodiment, the elastic link 17 is a rod-shaped structure with three bent parts. The outer connecting part 171 is connected to one end of the pivot part 172 and extends to one side. The top abutment 173 is connected to the other end of the pivot part 172 and extends in the opposite direction to the outer connecting part 171. The outer connecting part 171 has an outer connecting hole 174, and the pivot part 172 has a pivot hole 175. The outer wall surface of the top abutment 173 is arc-shaped, but not limited to this. The form of the elastic link 17 can be changed according to the user's needs. A pivot rod 176 passes through the pivot hole 175 and the pivot connection hole 166 to rotatably mount the elastic connecting rod 17 on the support frame 16. Two elastic connecting rods 17 are symmetrically arranged in the actuation space 167, and the two ends of the elastic element 18 are respectively connected to the external connection part 171 of the two elastic connecting rods 17. In this embodiment, the elastic element 18 is a spring and the two ends of the elastic element 18 are fixed through the external connection hole 174, but it is not limited thereto. The abutting top 173 of one elastic connecting rod 17 can selectively abut against the first friction surface 144 of the first connecting rod 14 or separate from it. The abutting top 173 of the other elastic connecting rod 17 can selectively abut against the second friction surface 154 of the second connecting rod 15 or separate from it.

[0040] When using this utility model, please refer to [link / reference]. Figure 2 As shown, the trajectory module 11 and torque module 12 are interconnected and operate synchronously through the plate assembly 20. The three states of the plate assembly 20—closed at 0 degrees, folded at 120 degrees, and unfolded at 180 degrees—are illustrated using the two dual-axis pivots 10. Please refer to [link to relevant documentation]. Figure 7AAs shown, one of the dual-axis pivots 10 is unfolded to a 180-degree position. Please also refer to... Figure 8 As shown in the enlarged view, at this time, the two elastic links 17 pivot around the pivot part 172 as the rotation center due to the tension of the elastic element 18, so that the two elastic links 17 generate torque in the opposite direction, and their respective tops 173 abut against the first hook section 147 of the first link 14 and the second hook section 157 of the second link 15, respectively, to achieve the function of maintaining the unfolded state by using the hook method.

[0041] Please see Figure 7B As shown, the dual-axis pivot 10 is in a 120-degree folded state. Please also refer to... Figure 9 As shown in the enlarged view, during the closing process, the first friction part 142 and the second friction part 152 move away from the support frame 16. The top 173 of the two elastic links 17 moves to the first maximum resistance section 146 of the first link 14 and the second maximum resistance section 156 of the second link 15, respectively. After being squeezed in the opposite direction, the elastic element 18 is stretched, and the friction force is at its maximum.

[0042] Please see Figure 7C As shown, the dual-axis pivot 10 is closed at 0 degrees. Please also refer to... Figure 10 As shown in the enlarged view, the first friction part 142 and the second friction part 152 continuously move away from the support 16. The abutment tops 173 of the two elastic connecting rods 17 pass through the first resistance change section 145 of the first connecting rod 14 and the second resistance change section 155 of the second connecting rod 15, respectively. This causes the frictional force to gradually decrease due to the inclined plane. Eventually, the abutment tops 173 of the two elastic connecting rods 17 disengage from the first friction surface 144 and the second friction surface 154, and the elastic member 18 restores its original state using its elastic restoring force. Conversely, when the dual-axis pivot 10 expands from a closed 0-degree state to a 180-degree state, the frictional force gradually increases.

[0043] Please see Figure 1 , Figure 2 and Figure 8 As shown, when applied to foldable electronic devices, during the aforementioned folding process, the structure of the elastic element 18, the elastic link 17, the first link 14 and the second link 15 work together to give the user a gradually changing feel of friction. The sensitivity of friction is significantly improved compared to existing technologies that only use concave and convex structures to generate friction. In addition to making the user feel better and more noticeable, the appropriate cushioning provided by the elastic element 18 can also increase the overall durability.

[0044] In the aforementioned process, since the dual-axis pivot 10 is folded to a 120-degree angle, which is the angle most commonly used by general consumers, this embodiment adopts such a design. In practice, the position of the maximum folding torque value can be controlled by changing the position of the maximum resistance section. On the other hand, this utility model only sets one first maximum resistance section 146 and one second maximum resistance section 156, but in practice, several maximum resistance sections can be set to correspond to various usage scenarios.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Anyone skilled in the art can make some modifications or alterations to the above-disclosed technical content as equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A torque module, characterized in that, Include: A linkage component having two opposing sides; Second, first link; Two second links, wherein one end of the first link and one end of the second link are rotatably connected to one side of the linkage assembly, and one end of the other first link and one end of the other second link are rotatably connected to the other side of the linkage assembly; Two supports, each movably connected to the first link and the second link on the same side, each support having two elastic links and an elastic element, the two elastic links being pivotally spaced apart, and the two ends of the elastic element being respectively connected to one end of the two elastic links, the other end of each first link forming a first friction surface, the first friction surface being selectively abutting or separating from the other end of one of the elastic links, the other end of each second link forming a second friction surface, the second friction surface being selectively abutting or separating from the other end of the other elastic link.

2. The torque module as described in claim 1, characterized in that, The first friction surface has a first resistance variation section, a first maximum resistance section and a first hook section. The first resistance variation section is a laterally outward extending slope, the first maximum resistance section is a straight surface continuing from the first resistance variation section, and the first hook section is an inward concave surface continuing from the first maximum resistance section.

3. The torque module as described in claim 1 or 2, characterized in that, The second friction surface forms a second resistance variation section, a second maximum resistance section and a second hook section. The second resistance variation section is a laterally outward extending slope, the second maximum resistance section is a straight surface continuing from the second resistance variation section, and the second hook section is an inward concave surface continuing from the second maximum resistance section.

4. The torque module as described in claim 3, characterized in that, The first friction surface and the second friction surface face each other, and the two elastic connecting rods are located between the first friction surface and the second friction surface.

5. The torque module as described in claim 1, characterized in that, Each elastic link includes an outer portion, a pivot portion, and a top abutment. The outer portion has an external connection hole, the pivot portion has a pivot hole, and the outer wall surface of the top abutment is arc-shaped. The two ends of the elastic element are respectively connected to the outer portion of each corresponding elastic link. A pivot rod is disposed on the support and passes through the pivot hole. The top abutment of one elastic link is abutted or separated from the first friction surface, and the top abutment of the other elastic link is abutted or separated from the second friction surface.

6. The torque module as described in claim 5, characterized in that, The external part is connected to one end of the pivot and extends toward one side, while the abutment is connected to the other end of the pivot and extends in the opposite direction to the external part.

7. The torque module as described in claim 1, characterized in that, The linkage assembly includes several gears, several idler gears, a first cam, a second cam, a spring assembly, several rotating shafts, and a fixed frame. Each gear is fixedly connected to one of the corresponding first connecting rods. Each gear meshes with the idler gears, causing two gears located on opposite sides to rotate synchronously in opposite directions. The first cam and the second cam are spaced apart. The spring assembly is disposed between the first cam and the second cam and passes through the first cam, the spring assembly, and the second cam via the rotating shafts. Each rotating shaft is pivotally connected to the fixed frame.

8. The torque module as described in claim 7, characterized in that, Each of the support frames has two grooves recessed on one side, and a guide rail is protruding from the inner wall of each groove. Each of the first connecting rods includes a first connecting part and a first friction part. The first connecting part is connected and fixed to one of the gears. A first guide groove is recessed around the periphery of the first friction part. Each of the second connecting rods includes a second connecting part and a second friction part. The second connecting part is connected and fixed to the other gear. A second guide groove is recessed around the periphery of the second friction part. The first guide groove and the second guide groove are respectively engaged with the guide rails of the two grooves and can slide along the two grooves.

9. The torque module as described in claim 8, characterized in that, Each of the supports has a fixed part, two outer limiting parts and an inner limiting part protruding on one side. The fixed part has several pivot holes. The two elastic connecting rods are pivotally mounted in each of the pivot holes. The outer limiting parts protrude from the support at intervals. The inner limiting parts protrude from the support and are arranged at intervals with the outer limiting parts. The other end of the two elastic connecting rods is located between the outer limiting parts and the inner limiting parts.

10. A dual-axis pivot, characterized in that, Include: At least one torque module as described in any one of claims 1 to 9; A trajectory module includes a base, two swing arms and two fixed seats. One end of each swing arm is rotatably connected to the base and is arranged opposite to each other. The other end of each swing arm is connected to the corresponding fixed seat. The torque module is connected to the trajectory module and can pivot synchronously.

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