Rotating shaft structure

Abstract

The rotating shaft structure comprises a first shell which is provided with a positioning hole, and a second shell which is provided with a first positioning part and a second positioning part; one end of a damping device of a rotating assembly is clamped and connected with the first positioning part, and the other end is limited in the positioning hole; one end of a concave-convex wheel assembly is clamped and connected with the second positioning part, the other end is provided with a first concave-convex wheel and a second concave-convex wheel, and the first concave-convex wheel is limited in the positioning hole; one end of an elastic telescopic piece is connected with the damping device, and the other end is connected with the concave-convex wheel assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hinge, in particular to a rotating shaft structure installed on a box body of an earphone box. BACKGROUND

[0002] Most of the existing Bluetooth earphones are attached with an earphone box, and the earphone is protected and charged through the earphone box. The structure of the earphone box can be referred to CN111470172B, CN218987469U and CN209467526U, etc. The box body and the box cover in the patent documents are connected by a rotating shaft structure, so that the box body can be connected to the box cover. However, although the rotating shaft structure of each of the above-mentioned patent cases can make the box body and the box cover rotate relative to each other, the space occupied by each rotating shaft structure is relatively large, and most of them use torsional springs as the source of torsion. During the opening and closing process, the opening process of the cover is too fast, which can easily cause the earphone to fall off, and the closing process is too fast, which can easily cause the cover and the box to collide and make a noise, resulting in a poor experience for the user. In addition, after long-term use, the torsional spring is prone to structural fatigue, which can reduce the torsion and affect the smoothness of the cover rotation, and even cause the cover to shake relative to the box. SUMMARY

[0003] In view of the above, in order to provide a structure different from the prior art and improve the above-mentioned shortcomings, the inventor has accumulated years of experience and continuously improved research and development, and thus the present utility model is produced.

[0004] The utility model aims to provide a rotating shaft structure to solve the problems of the large space occupied by the traditional rotating shaft structure, the fast opening of the cover which can easily cause the earphone to fall off, the fast closing which can easily cause the cover and the box to collide and make a noise, the unsmooth rotation of the cover, and the shaking phenomenon.

[0005] In order to achieve the above-mentioned purpose of the utility model, the rotating shaft structure provided by the utility model comprises a first shell, a second shell and a rotating assembly. One side end of the first shell has a positioning hole; one side end of the second shell has a first positioning part and a second positioning part; the rotating assembly comprises a damping device, a concave-convex wheel assembly and an elastic expansion piece. One end of the damping device is connected to the first positioning part, and the other end of the damping device is limited in the positioning hole of the first shell in a same motion manner; one end of the concave-convex wheel assembly is connected to the second positioning part, and the other end of the concave-convex wheel assembly has a first concave-convex wheel and a second concave-convex wheel connected to each other, and the first concave-convex wheel is limited in the positioning hole of the first shell in a same motion manner; one end of the elastic expansion piece is connected to the other end of the damping device, and the other end of the elastic expansion piece is connected to the other end of the concave-convex wheel assembly.

[0006] The first shell has a protrusion at one end, and the protrusion has a positioning hole; the second shell has a recess at one end, and the recess has a first positioning part at one end and a second positioning part at the other end.

[0007] The first positioning part is a groove, and the second shell has a straight slot part at one end, and the straight slot part is connected to the first positioning part.

[0008] The damping device includes a first shaft and a sleeve, one end of the first shaft is connected to the first positioning part of the second shell, the other end of the first shaft penetrates into the sleeve, and the sleeve is sleeved on the first shaft; one end of the sleeve is connected to one end of the elastic part, and a gap is formed between the inner periphery of the sleeve and the outer periphery of the first shaft, and the gap is used for accommodating a damping liquid.

[0009] The positioning hole has at least one first long section, the outer periphery of the sleeve has at least one second long section, the at least one second long section corresponds to the at least one first long section, and the sleeve is limited in the positioning hole in a same motion manner.

[0010] The first shaft includes a first shaft part, an annular limiting part and a first clamping part, the sleeve is sleeved on the first shaft part, the annular limiting part is adjacent to one end of the positioning hole, and the first clamping part is clamped and connected to the first positioning part.

[0011] The positioning hole has at least one first long section, the outer periphery of the annular limiting part has at least one third long section, the at least one third long section corresponds to the at least one first long section, and the annular limiting part slides out of the positioning hole in a fixed direction.

[0012] The second shaft penetrates through the first concave-convex wheel, the second concave-convex wheel and the elastic part in a coaxial manner, the second shaft is connected to the second concave-convex wheel in a same motion manner, the other end of the second shaft is connected to the end sealing part, and the end sealing part is connected to the other end of the elastic part.

[0013] The positioning hole has at least one first long section, the outer periphery of the first concave-convex wheel has at least one fourth long section, the at least one fourth long section corresponds to the at least one first long section, and the first concave-convex wheel is limited in the positioning hole of the first shell in a same motion manner.

[0014] The elastic part is a compression spring, and the other end of the second shaft is connected to the end sealing part in a relative motion manner, so as to adjust the elastic force of the elastic part.

[0015] In implementation, the positioning hole has at least one first long section, the end seal has at least one sixth long section, and the at least one sixth long section corresponds to the at least one first long section, so that the end seal is limited in the positioning hole of the first shell in a same-motion manner.

[0016] In implementation, the second shaft rod comprises a second rod part, an annular positioning part and a second clamping part which extend coaxially, the second rod part coaxially penetrates the first concave-convex wheel, the second concave-convex wheel and the elastic member, the annular positioning part abuts against the first concave-convex wheel, and the second clamping part is clamped to connect the second positioning part.

[0017] In implementation, the positioning hole has at least one first long section, the outer periphery of the annular positioning part has at least one fifth long section, and the at least one fifth long section corresponds to the at least one first long section, so that the annular positioning part slides out of the positioning hole in a fixed direction.

[0018] The beneficial effects of the present application are as follows: a rotating assembly is used to pivotally connect a first shell and a second shell, a concave-convex wheel assembly is used to generate rotating torque, and a damping device is arranged on one side of the concave-convex wheel assembly, so that the elements are simplified, the space is reduced, the assembly and disassembly are convenient, and the cost is saved; meanwhile, during the opening and closing of the two shells, the damping device can provide bidirectional damping, so that the first shell is automatically opened to the bottom or automatically closed to the closed state in a slow manner, thereby preventing the earphone from falling, making the opening and closing action smooth, preventing collision to eliminate noise, and prolonging the service life of the product.

[0019] In order to further understand the present application, the following preferred embodiments are described in detail below in combination with the drawings, figures and numbers, and the specific constitutions of the present application and the effects achieved are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an exploded view of an element of the preferred embodiment of the rotating shaft structure of the present application.

[0021] Figure 2 It is another exploded view of an element of the preferred embodiment of the rotating shaft structure of the present application.

[0022] Figure 3 It is an exploded view of an element of the rotating assembly of the preferred embodiment of the rotating shaft structure of the present application.

[0023] Figure 4 It is a perspective appearance schematic view of the preferred embodiment of the present application.

[0024] Figure 5 It is Figure 4 A-A' sectional view of the preferred embodiment of the present application.

[0025] Figure 6 It is a perspective appearance schematic view of the first shell of the preferred embodiment of the rotating shaft structure of the present application when it is partially opened.

[0026] Figure 7 FIG. 2 is a perspective view of a first housing of a preferred embodiment of the rotating shaft structure of the present application.

[0027] Figure 8 FIG. 3 is a perspective view of the first housing of the preferred embodiment of the rotating shaft structure of the present application when fully opened.

[0028] Figure 9 FIG. 4 is a sectional view of the first housing of the preferred embodiment of the rotating shaft structure of the present application when fully opened.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1: rotating shaft structure;

[0031] 2: first housing;

[0032] 21: protrusion;

[0033] 22: positioning hole;

[0034] 221: first long section;

[0035] 3: second housing;

[0036] 31: recess;

[0037] 32: first positioning portion;

[0038] 33: straight slot portion;

[0039] 34: second positioning portion;

[0040] 4: rotating assembly;

[0041] 41: damping device;

[0042] 411: sleeve;

[0043] 4111: second long section;

[0044] 412: first shaft;

[0045] 413: leakproof rubber ring;

[0046] 414: first rod portion;

[0047] 415: annular limiting portion;

[0048] 4151: third long section;

[0049] 416: first clamping portion;

[0050] 417: protruding column;

[0051] 418: gap;

[0052] 419: damping liquid;

[0053] 410: annular groove;

[0054] 42: concave-convex wheel assembly;

[0055] 43: elastic telescopic member;

[0056] 44: first concave-convex wheel;

[0057] 444: fourth long section;

[0058] 441: first concave-convex part;

[0059] 442: first convex part;

[0060] 443: first concave part;

[0061] 45: second concave-convex wheel;

[0062] 451: second concave-convex part;

[0063] 452: second convex part;

[0064] 453: second concave part;

[0065] 46: second shaft;

[0066] 461: second rod part;

[0067] 462: annular positioning part;

[0068] 4621: fifth long section;

[0069] 463: second clamping part;

[0070] 47: elastic member;

[0071] 48: end sealing member;

[0072] 481: sixth long section. DETAILED DESCRIPTION

[0073] The utility model discloses a rotating shaft structure, including a first casing, a second casing and a rotating assembly. The first casing has a positioning hole on one side end; the second casing has a first positioning part and a second positioning part on one side end; the rotating assembly includes a damping device, a concave-convex wheel assembly and an elastic telescopic piece, one end of the damping device is connected with the first positioning part, and the other end of the damping device is limited in the positioning hole of the first casing in the same way; one end of the concave-convex wheel assembly is connected with the second positioning part, and the other end of the concave-convex wheel assembly has a first concave-convex wheel and a second concave-convex wheel connected oppositely, and the first concave-convex wheel is limited in the positioning hole of the first casing in the same way; one end of the elastic telescopic piece is connected with the other end of the damping device, and the other end of the elastic telescopic piece is connected with the other end of the concave-convex wheel assembly.

[0074] As Figure 1 shown, it is the preferred embodiment of the utility model rotating shaft structure 1, including a first casing 2, a second casing 3 and a rotating assembly 4. The first casing 2 is the upper cover of the top of the bluetooth earphone box, and the first casing 2 has a protruding part 21 in the shape of a strip on one side end, and the protruding part 21 has a positioning hole 22 in the long direction, and the positioning hole 22 is a circular hole with at least a first long section 221, and in the embodiment, the at least a first long section 221 includes two first long sections 221 parallel to each other. Please refer to Figure 1 、 Figure 2 shown, the second casing 3 is the storage box of the bottom of the bluetooth earphone box, and the second casing 3 has a recessed part 31 on one side end, and the recessed part 31 has a first positioning part 32 and a straight slot part 33 on one end, and the first positioning part 32 is a circular recess with two parallel sections, and the straight slot part 33 is connected with the first positioning part 32 on one end, and the other end of the straight slot part 33 is connected with the inside of the body of the second casing 3, so that one end of a rod can pass through the straight slot part 33 inside the second casing 3 and then enter the first positioning part 32; the other end surface of the recessed part 31 has a second positioning part 34, and the second positioning part 34 faces the first positioning part 32, and the second positioning part 34 is a square recess.

[0075] As Figures 3-5As shown, the rotating assembly 4 comprises a damping device 41, a concave-convex wheel assembly 42, and an elastic telescopic member 43. The damping device 41 comprises a sleeve 411, a first shaft 412, and a leakproof rubber ring 413. The outer periphery of the sleeve 411 has at least one second long cutting surface 4111 corresponding to the at least one first long cutting surface 221. In this embodiment, the at least one second long cutting surface 4111 comprises two second long cutting surfaces 4111 parallel to each other, so that the sleeve 411 is limited in the positioning hole 22 of the convex portion 21, thereby making the sleeve 411 rotate synchronously with the first shell 2. The first shaft 412 comprises a first shaft portion 414 coaxially extending, an annular limiting portion 415, and a first clamping portion 416. The sleeve 411 is sleeved on the first shaft portion 414. One end of the first shaft portion 414 coaxially extends a convex column 417 for positioning in the interior of the sleeve 411. After the first shaft portion 414 penetrates the sleeve 411, a gap 418 is formed between the inner periphery of the sleeve 411 and the outer periphery of the first shaft portion 414. The gap 418 is filled with a viscous liquid, which serves as damping liquid 419. The other end of the first shaft portion 414 has an annular groove 410. The leakproof rubber ring 413 is sleeved on the first shaft portion 414 and is accommodated in the annular groove 410, thereby preventing the damping liquid 419 from leaking outward. The annular limiting portion 415 is adjacent to one end side of the convex portion 21. The outer periphery of the annular limiting portion 415 has at least one third long cutting surface 4151 corresponding to the at least one first long cutting surface 221. In this embodiment, the at least one third long cutting surface 4151 comprises two third long cutting surfaces 4151 parallel to each other, so that the annular limiting portion 415 cannot rotate at will when entering the positioning hole 22. The annular limiting portion 415 slides out of the positioning hole 22 along the fixed direction, thereby facilitating the first clamping portion 416 to be assembled to the first positioning portion 32. One end of the annular limiting portion 415 corresponds to the first positioning portion 32 and extends a convex column. The outer periphery of the convex column has two parallel cutting surfaces, thereby making the convex column clampingly connect the first positioning portion 32 of the second shell 3. In practice, the convex column serves as the first clamping portion 416. The shapes of the first positioning portion 32 and the first clamping portion 416 can be selected from triangular prism, semi-cylindrical, quadrangular prism, or any other shape capable of maintaining the clamping positioning state, and are not limited to this embodiment.

[0076] The concave-convex wheel assembly 42 comprises a first concave-convex wheel 44, a second concave-convex wheel 45, a second shaft 46, a resilient member 47 and an end seal 48. The first concave-convex wheel 44 has at least one fourth long cutting surface 444 corresponding to the at least one first long cutting surface 221 on the outer periphery thereof. In the present embodiment, the at least one fourth long cutting surface 444 comprises two fourth long cutting surfaces 444 parallel to each other, so that the first concave-convex wheel 44 is limited in the positioning hole 22 of the protrusion 21, thereby enabling the first concave-convex wheel 44 to rotate synchronously with the first housing 2. The first concave-convex wheel 44 has a first concave-convex portion 441 on one end surface thereof. The first concave-convex portion 441 has two first convex portions 442 and two first concave portions 443 interleaved with each other. The second concave-convex wheel 45 has a second concave-convex portion 451 on one end surface thereof. The second concave-convex portion 451 has two second convex portions 452 and two second concave portions 453 interleaved with each other. The second concave-convex portion 451 is opposite to the first concave-convex portion 441. The two first convex portions 442 of the first concave-convex portion 441 correspond to the two second concave portions 453 of the second concave-convex portion 451 respectively. The two first concave portions 443 of the first concave-convex portion 441 correspond to the two second convex portions 452 of the second concave-convex portion 451 respectively.

[0077] The second shaft 46 comprises a second shaft portion 461, an annular positioning portion 462 and a second clamping portion 463 coaxially extending. The second shaft portion 461 has at least one fifth long cutting surface 4621 corresponding to the at least one first long cutting surface 221 on the outer periphery thereof. In the present embodiment, the at least one fifth long cutting surface 4621 comprises two fifth long cutting surfaces 4621 parallel to each other, so that the annular positioning portion 462 cannot rotate randomly when entering the positioning hole 22. The annular positioning portion 462 slides out of the positioning hole 22 in a fixed direction, thereby facilitating the second clamping portion 463 to align with the second positioning portion 34 for assembly and pre-pressing torsion. One end of the second shaft portion 461 has external threads. The second shaft portion 461 coaxially penetrates the first concave-convex wheel 44, the second concave-convex wheel 45 and a compression spring, thereby enabling the annular positioning portion 462 to press against the other end surface of the first concave-convex wheel 44 and the other end surface of the second concave-convex wheel 45 to press against one end of the compression spring. When the first concave-convex wheel 44 rotates, the second concave-convex wheel 45 is pushed to slide along the axial direction of the second shaft portion 461. In practice, the compression spring serves as the resilient member 47. One end of the annular positioning portion 462 coaxially extends a square-shaped protrusion. The square-shaped protrusion is clamped to the second positioning portion 34 of the second housing 3. In practice, the square-shaped protrusion serves as the second clamping portion 463. The shapes of the second positioning portion 34 and the second clamping portion 463 can be selected from triangular prism, semi-cylindrical and other shapes capable of maintaining the clamped and positioned state, and are not limited to the present embodiment.

[0078] The end seal 48 is a nut. Its outer periphery defines at least one sixth long section 481 corresponding to the at least one first long section 221. In this embodiment, the at least one sixth long section 481 includes two parallel sixth long sections 481, thereby positioning the end seal 48 within the positioning hole 22 of the protruding portion 21 and enabling synchronous rotation of the end seal 48 and the first housing 2. The external thread at one end of the second rod 461 screws into the internal threaded hole of the end seal 48. Before installing the concave cam assembly 42 or after inserting the end seal 48 into the positioning hole 22, the second shaft 46 is rotated to produce relative movement between the end seal 48 and the end seal 48, thereby compressing the elastic member 47 to adjust the elastic force. The elastic telescopic member 43 is a compression spring, one end of the elastic telescopic member 43 presses against the sleeve 411 connected to the damping device 41, and the other end of the elastic telescopic member 43 presses against the end sealing member 48 connected to the concave cam assembly 42, so as to press the first clamping portion 416 of the damping device 41 and the second clamping portion 463 of the concave cam assembly 42 to be respectively pressed and engaged with the first positioning portion 32 and the second positioning portion 34, and push the annular limiting portion 415 and the annular positioning portion 462 out of the positioning hole 22 respectively.

[0079] By this, Figure 3 、 Figures 6-9 As shown, during the opening and flipping process of the first shell 2, the first shell 2, the first concave cam 44 and the sleeve 411 rotate synchronously. After the two first protrusions 442 of the first concave cam 44 are squeezed to pass through the two second protrusions 452 of the second concave cam 45, the elastic member 47 can be used to push the second concave cam 45 to allow the first shell 2 to continue to be opened and rotated; and during the opening and rotation process, the relative rotation of the sleeve 411 and the first shaft 412 can cause the damping liquid 419 to generate relative flow to provide damping, so that the first shell 2 is gently and automatically opened to the bottom; and during the reverse closing process of the first shell 2, the same principle can be used to allow the first shell 2 to be gently and automatically returned to the closed state.

[0080] In summary, according to the above disclosure, the first shell and the second shell are pivotally connected by a rotating assembly, a concave-convex wheel assembly is used to generate a rotating torque, and a damping device is arranged on one side of the concave-convex wheel assembly to provide damping. In this way, not only can the components be reduced to facilitate assembly, the elements can be effectively simplified to reduce space and save costs, but also during the opening and closing process of the first shell, the damping device can provide bidirectional damping to automatically open the first shell to the bottom or automatically close the first shell to the closed state, thereby preventing the earphone from falling, making the opening and closing action smooth, preventing collision to eliminate noise, and prolonging the service life of the product. One end of the second rod is screwed with an end piece, and a first concave-convex wheel, a second concave-convex wheel and a spring are coaxially connected between the annular positioning part and the end piece. The torque strength of the first shell opening and closing can be adjusted, and the opening and closing feel is smooth and stable. Furthermore, a straight groove is arranged at the bottom of the first positioning part, and a rod is arranged against the first clamping part of the concave-convex wheel assembly, so that the first clamping part is inserted into the positioning hole to disassemble the first shell, which is very convenient for disassembly. Therefore, the utility model has great industrial value, and a new patent application is hereby submitted in accordance with the law.

[0081] The utility model discloses the preferred embodiment for realizing the above-mentioned purpose, but it is not used to limit the structural features of the utility model, and any person skilled in the art should know that any easy thought change or modification is possible under the technical spirit of the utility model, and all are covered in the patent application range of the utility model.

Claims

1. A rotating shaft structure, comprising: a first housing having a positioning hole at one side end thereof; a second housing having a first positioning portion and a second positioning portion at one side end thereof; and a rotating assembly, comprising: a damping device having one end engaged with the first positioning portion, and the other end of the damping device being limited in the positioning hole of the first housing in a same motion manner; a concave-convex wheel assembly having one end engaged with the second positioning portion, and the other end of the concave-convex wheel assembly having a first concave-convex wheel and a second concave-convex wheel oppositely connected, the first concave-convex wheel being limited in the positioning hole of the first housing in a same motion manner; and an elastic telescopic member having one end connected with the other end of the damping device, and the other end of the elastic telescopic member connected with the other end of the concave-convex wheel assembly. The one side end of the first housing has a protrusion having the positioning hole, and the one side end of the second housing has a recess having the first positioning portion at one end thereof and the second positioning portion at the other end thereof. The first positioning portion is a groove, and the one side end of the second housing further has a straight slot portion communicating with the first positioning portion. The damping device comprises a first shaft and a sleeve, one end of the first shaft is connected with the first positioning portion of the second housing, and the other end of the first shaft penetrates into the sleeve for the sleeve to sleeve the first shaft, one end of the sleeve is connected with the one end of the elastic telescopic member, and there is a gap between the inner periphery of the sleeve and the outer periphery of the first shaft for accommodating a damping liquid. The positioning hole has at least one first long section, and the outer periphery of the sleeve has at least one second long section corresponding to the at least one first long section for the sleeve to be limited in the positioning hole in a same motion manner. The first shaft comprises a first rod portion extending coaxially, an annular limiting portion adjacent to one end of the positioning hole, and a first clamping portion engaged with the first positioning portion. The positioning hole has at least one first long section, and the outer periphery of the annular limiting portion has at least one third long section corresponding to the at least one first long section for the annular limiting portion to slide out of the positioning hole in a fixed direction. The concave-convex wheel assembly further comprises a second shaft, an elastic member, and an end seal, one end of the second shaft is connected with the second positioning portion of the second housing, the second shaft coaxially penetrates through the first concave-convex wheel, the second concave-convex wheel, and the elastic member, the second shaft is connected with the second concave-convex wheel in a same motion manner, and the end of the other end of the second shaft is connected with the end seal, and the end seal is connected with the other end of the elastic telescopic member.

2. The rotating shaft structure according to claim 1, wherein The positioning hole has at least one first long section, and the outer periphery of the first concave-convex wheel has at least one fourth long section corresponding to the at least one first long section for the first concave-convex wheel to be limited in the positioning hole of the first housing in a same motion manner.

3. The rotating shaft structure according to claim 2, wherein The elastic member is a compression spring, and the end of the other end of the second shaft is connected with the end seal in a relative motion manner for adjusting the elastic force of the elastic member.

4. The rotating shaft structure of claim 1, wherein ​ 5. The rotating shaft structure according to claim 4, wherein ​ 6. The rotating shaft structure of claim 4, wherein ​ 7. The rotating shaft structure according to claim 6, wherein ​ 8. The rotating shaft structure of claim 1, wherein ​ 9. The rotating shaft structure of claim 1, wherein ​ 10. The rotating shaft structure of claim 8, wherein ​ 11. The rotating shaft structure of claim 8, wherein The positioning hole has at least one first long section, and the end seal has at least one sixth long section corresponding to the at least one first long section, so that the end seal is limited in the positioning hole of the first shell in a same motion mode.

12. The rotating shaft structure of claim 8, wherein The second shaft rod comprises a second rod part, an annular positioning part and a second clamping part coaxially extending, the second rod part coaxially penetrating the first concave-convex wheel, the second concave-convex wheel and the elastic piece, the annular positioning part abutting against the first concave-convex wheel, and the second clamping part clampingly connecting the second positioning part.

13. The rotating shaft structure of claim 12, wherein The positioning hole has at least one first long section, and the outer periphery of the annular positioning part has at least one fifth long section corresponding to the at least one first long section, so that the annular positioning part slides out of the positioning hole in a fixed direction.

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