Rotating shaft mechanism

Abstract

The utility model discloses a rotating shaft mechanism. The rotating shaft mechanism comprises a shaft body; the torsion assembly comprises a torsion part and a fixing part; the shaft body is sleeved with the torsion part, torsion is generated between the torsion part and the shaft body when the shaft body rotates, and the fixing part is fixed to the periphery of the torsion part. The fixing shell is internally provided with a fixing groove corresponding to the fixing part, avoiding mounting grooves are formed in the groove walls of one side or two sides of the fixing groove, elastic pieces are arranged in the avoiding mounting grooves, and when the fixing part is embedded into the fixing groove, the elastic pieces interfere with the fixing part to fasten the fixing part. According to the rotating shaft mechanism, the possibility that the torsion assembly rubs the fixed shell in the process of being pressed into the fixed shell can be reduced, the assembly difficulty is small, and the structural stability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment technical field, especially relate to a pivot mechanism. BACKGROUND

[0002] The pivot is a kind of part commonly used in machinery, it usually needs to be installed stably by fixed mode, the pivot fixing mode commonly used at present includes flange bolt fixing, sleeve bolt fixing and press-in type fixing etc., and in order to make the mechanism connected with pivot have certain hover property in the process of rotation, generally, torsion piece is also arranged on pivot, when pivot is sleeve bolt fixed or press-in fixed, torsion piece can also be arranged in the fixed shell (sleeve or the mechanism required to be pressed into the pivot) of pivot.But, when torsion piece is directly embedded in fixed shell, in order to guarantee the embedding tightness and stability between torsion piece and fixed shell, there is relatively large interference between torsion piece and fixed shell, which not only makes torsion piece difficult to be pressed into fixed shell, but also can make torsion piece scratch fixed shell, resulting in that the interference amount between them is insufficient and embedding tightness is affected. SUMMARY

[0003] Therefore, in order to solve the problems that torsion piece is difficult to be pressed into the fixed shell of pivot and torsion piece can scratch fixed shell in the process of pressing in, resulting in that the interference amount between them is insufficient and embedding tightness is affected, the utility model provides a pivot mechanism.

[0004] Therefore, the utility model provides a pivot mechanism, which comprises:

[0005] Shaft body;

[0006] Torsion assembly, including torsion part and fixed part;Torsion part is sleeved on shaft body, and generates torsion force between shaft body when shaft body rotates, and fixed part is fixed to the outer periphery of torsion part;

[0007] Fixed shell, which has fixed groove corresponding to fixed part in it, and the groove wall on one side or both sides of fixed groove is provided with avoidance installation groove, and elastic piece is arranged in avoidance installation groove, and when fixed part is embedded in fixed groove, elastic piece interferes with fixed part and fastens fixed part.

[0008] Optionally, one end of fixed groove in the axial direction of shaft body is open end, and fixed part is embedded in fixed groove from open end;Elastic piece forms arc-shaped introduction part at open end.

[0009] Optionally, elastic piece is bending elastic piece, and the bending part of bending piece is arc-shaped bending part, and arc-shaped bending part is arc-shaped introduction part.

[0010] Optionally, the bending elastic member further comprises a first elastic arm and a second elastic arm connected with the arc-shaped bending part respectively; the first elastic arm is provided with a flat part, and the flat part is tightly abutted with the fixed part when the fixed part is embedded into the fixed groove.

[0011] Optionally, the first elastic arm is provided with at least one first elastic supporting convex point on the side away from the fixed part, and the first elastic supporting convex point is elastically supported on the groove bottom of the corresponding avoiding installation groove when the fixed part is embedded into the fixed groove.

[0012] Optionally, the second elastic arm is provided with at least one second elastic supporting convex point, and the second elastic supporting convex point is supported on the corresponding first elastic arm when the fixed part is embedded into the fixed groove.

[0013] Optionally, the bending elastic member is two, and the first elastic arms of the two bending elastic members are connected.

[0014] Optionally, the torsion assembly comprises a plurality of torsion sheets, each of which comprises a ring setting part and a fixed convex part, the plurality of ring setting parts form a torsion part, and the plurality of fixed convex parts form a fixed part; the ring setting part is provided with an opening.

[0015] Optionally, the opening is arranged opposite to the fixed convex part, or the opening is arranged adjacent to the fixed convex part.

[0016] Optionally, the fixed shell is provided with a first limiting groove and a second limiting groove at two ends in the axial direction of the shaft body respectively; the shaft mechanism further comprises a first limiting sleeve and a second limiting sleeve, and the first limiting sleeve and the second limiting sleeve are both sleeved on the shaft body and embedded into the first limiting groove and the second limiting groove respectively when the shaft body is arranged in the fixed shell.

[0017] The technical scheme provided by the utility model has the following advantages:

[0018] The shaft mechanism provided by the utility model is provided with not only the fixed groove corresponding to the fixed part of the torsion assembly in the fixed shell, but also the avoiding installation groove on the groove wall of the fixed groove, and the elastic member is arranged in the avoiding installation groove, so that the elastic member is the main component for interfering with the torsion assembly and fastening the fixed part when the fixed part of the torsion assembly is embedded into the fixed groove, the fixed shell (mainly the fixed groove on the fixed shell) does not need to be arranged to have relatively large interference with the torsion assembly, so that the possibility that the torsion assembly scratches the fixed shell in the process of being pressed into the fixed shell can be reduced, the interference amount between the torsion assembly and the fixed part due to scratching can be avoided, the embedding tightness is not enough, and then the assembly difficulty of the shaft mechanism can be reduced, and the structural stability thereof can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 The structure diagram of the rotating shaft mechanism is provided for the embodiments of the present application.

[0021] Figure 2 The structure explosion diagram of the rotating shaft mechanism in the Figure 1

[0022] Figure 3 The specific structure diagram of the fixed shell in the rotating shaft mechanism is provided for the embodiments of the present application.

[0023] Figure 4 The specific structure diagram of the torsion piece in the rotating shaft mechanism is provided for the embodiments of the present application. Figure 5

[0024] The specific structure diagram of the elastic piece in the rotating shaft mechanism is provided for the embodiments of the present application. Figure 6 Figure 7 Figure 8

[0025] Explanation of reference signs:

[0026] 1-axis body;

[0027] 2-torsion assembly; 2a-torsion part; 2b-fixed part; 21-torsion piece; 21a-ring setting part; 21b-fixed convex part; 21c-opening;

[0028] 3-fixed shell; 31-fixed groove; 32-avoiding installation groove; 33-first limiting groove; 34-second limiting groove;

[0029] 4-elastic piece; 41-bent elastic piece; 411-arc-shaped leading-in part; 412-first elastic arm; 413-second elastic arm; 414-first elastic support convex point; 415-second elastic support convex point;

[0030] 51-first limiting sleeve; 52-second limiting sleeve. Specific embodiments

[0031] ​​​​The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0035] Please refer to Figures 1-3 A structure diagram of a rotating shaft mechanism provided by the embodiment of the present application, the rotating shaft mechanism comprises a shaft body 1, a torsion assembly 2, a fixed shell 3 and an elastic member 4, wherein the torsion assembly 2 comprises a torsion part 2a and a fixed part 2b, the torsion part 2a is sleeved on the shaft body 1, and a torsion is generated between the shaft body 1 and the torsion part 2a when the shaft body 1 rotates, and the fixed part 2b is fixed to the outer periphery of the torsion part 2a; the fixed shell 3 has a fixed groove 31 corresponding to the fixed part 2b, and an avoidance installation groove 32 is arranged on one side or both sides of the groove wall of the fixed groove 31; the elastic member 4 is arranged in the avoidance installation groove 32, and when the fixed part 2b is embedded in the fixed groove 31, the elastic member 4 interferes with the fixed part 2b and fastens the fixed part 2b.

[0036] In the present embodiment, as Figure 2 and Figure 4As shown, the torsion assembly 2 can include several torsion pieces 21; specifically, each torsion piece 21 can be provided with a ring setting portion 21a and a fixed convex portion 21b, at this time, the ring setting portion 21a of each torsion piece 21 forms the torsion portion 2a of the torsion assembly 2, and the fixed convex portion 21b of each torsion piece 21 forms the fixed portion 2b of the torsion assembly 2.

[0037] In the embodiment, in order to facilitate the assembly of the shaft body 1 and the torsion assembly 2, the ring setting portion 21a of each torsion piece 21 can be provided with an opening 21c; in specific implementation, as shown in Figure 4 , the opening 21c of the torsion piece can be arranged opposite to the fixed convex portion 21b, and the torsion piece as a whole has a symmetrical structure; as shown in Figure 5 , the opening 21c of the torsion piece 21 can also be arranged with the fixed convex portion 21b, and the torsion piece as a whole has a "question mark" structure.

[0038] In the embodiment, based on the fact that the torsion assembly 2 and the fixed shell 3 are fastened and connected through the fixed portion 2b and the fixed groove 31, therefore, the torsion portion 2a of the torsion assembly 2 and the inside of the fixed shell 3 do not need to have interference, but can have a certain gap, in order to facilitate the installation of the torsion assembly 2 and the fixed shell 3; at this time, in order to further improve the structural stability of the rotating shaft mechanism in the embodiment, as shown in Figure 2 and Figure 3 , the fixed shell 3 can be provided with a first limiting groove 33 and a second limiting groove 34 at both ends in the axial direction of the shaft body 1, correspondingly, the rotating shaft mechanism further includes a first limiting sleeve 51 and a second limiting sleeve 52, when the shaft body 1 is arranged in the fixed shell 3, the first limiting sleeve 51 and the second limiting sleeve 52 are both arranged on the shaft body 1 and are respectively embedded in the first limiting groove 33 and the second limiting groove 34. In specific implementation, the first limiting sleeve 51 and the second limiting sleeve 52 can be limiting washers or limiting shaft sleeves.

[0039] In the embodiment, the position-avoiding installation groove 32 arranged on one groove wall of the fixed groove 31 can be one as shown in Figure 2 and Figure 3 , or two (as shown in Figure 2 and Figure 3 , both of which are provided with installation grooves 32 on both groove walls of the fixed groove, in specific implementation, the position-avoiding installation groove 32 can be arranged on only one groove wall.

[0040] In the embodiment, the specific shape and structure of the elastic piece 4 corresponding to each position-avoiding installation groove 32 can be the same or different.

[0041] In the embodiment, in order to facilitate the installation of the elastic member 4, when the slot walls on both sides of the fixing groove 31 are provided with the position-avoiding installation groove 32, the two position-avoiding installation grooves 32 can be symmetrically arranged, and the corresponding two elastic members 4 are connected.

[0042] In the embodiment, in order to further improve the convenience of embedding the torsion assembly 2 into the fixing groove 31, as shown in Figure 2 and Figure 3 , the fixing groove 31 can be provided with an open end at one end in the axial direction of the shaft body 1, the fixing portion 2b is embedded into the fixing groove 31 from the open end, and the elastic member 4 forms an arc-shaped guide-in portion 411 at the open end, so that the torsion assembly 2 can be guided by the arc-shaped guide-in portion 411 to smoothly enter the fixing groove 31.

[0043] Specifically, as shown in Figure 3 and Figure 6 , the elastic member 4 can be provided as a bent elastic member 414, and the bending portion of the bent elastic member 414 is an arc-shaped bending portion, which is the arc-shaped guide-in portion 411, and at this time, the two arms of the bent elastic member 414 connected with the arc-shaped bending portion can be respectively provided as a first elastic arm 412 and a second elastic arm 413, wherein the first elastic arm 412 is an interference arm directly contacting the fixing portion 2b of the torsion assembly 2, and the second elastic arm 413 is a supporting arm abutting against the groove bottom of the position-avoiding installation groove 32.

[0044] In specific implementation, in order to ensure the tightness of the contact and interference between the second elastic arm 413 and the fixing portion 2b of the torsion assembly 2, as shown in Figure 6 , the first elastic arm 412 can be provided with a flat portion, and when the fixing portion 2b is embedded into the fixing groove 31, the flat portion abuts against and tightly fixes the fixing portion 2b.

[0045] In specific implementation, when the bent elastic member 414 is two, as shown in Figure 7 , the first elastic arms 412 of the two bent elastic members 414 can be connected.

[0046] In the embodiment, in order to improve the fixing effect of the bent elastic member 414 on the fixing portion 2b of the torsion assembly 2, a supporting protrusion can be arranged on the first elastic arm 412 or the second elastic arm 413 of the bent elastic member 414.

[0047] Specifically, as shown in Figure 6 and Figure 7 , the first elastic arm 412 of the bent elastic member 414 can be provided with a supporting protrusion.As shown, the side of the first elastic arm 412 away from the fixed part 2b can be provided with at least one first elastic support bump 414, and when the fixed part 2b is embedded into the fixed groove 31, the first elastic support bump 414 is elastically supported on the groove bottom of the corresponding avoidance installation groove 32. Specifically, the first elastic support bump 414 can be a plate-shaped bending structure (for example, a U-shaped bending structure as shown in Figure 6 , or a C-shaped bending structure as shown in Figure 7 ) extending from the first elastic arm 412, and the plate-shaped bending structure is relatively thin with respect to the two elastic arms, thus having a certain elasticity. Those skilled in the art should understand that at this time, the second elastic arm 413 is shorter than the first elastic arm 412, so that the first elastic support bump 414 can be directly supported on the avoidance installation groove 32.

[0048] Specifically, as shown in Figure 8 , the second elastic arm 413 can also be provided with at least one second elastic support bump 415, and when the fixed part 2b is embedded into the fixed groove 31, the second elastic support bump 415 is supported on the corresponding first elastic arm 412.

[0049] In summary, in the pivot mechanism in the embodiment, by providing that the fixed shell 3 not only has the fixed groove 31 corresponding to the fixed part 2b of the torsion assembly 2, but also has the avoidance installation groove 32 on the groove wall of the fixed groove 31, and by correspondingly providing the elastic member 4 in the avoidance installation groove 32, when the fixed part 2b of the torsion assembly 2 is embedded into the fixed groove 31, the elastic member 4 is the main component interfering with the torsion assembly 2 and fastening the fixed part 2b, and the fixed shell 3 (mainly the fixed groove 31 on the fixed shell 3) does not need to be provided to have a relatively large interference with the torsion assembly 2, so as to reduce the possibility of the torsion assembly 2 scratching the fixed shell 3 during the process of being pressed into the fixed shell 3, avoid the insufficient interference and insufficient fitting tightness between the torsion assembly 2 and the fixed shell due to scratching, and further reduce the assembly difficulty of the pivot mechanism and improve the structural stability thereof.

[0050] Obviously, the above embodiments are only examples for clearly illustrating, but not limiting the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to exhaust all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A rotation shaft mechanism characterized by comprising: The utility model relates to a rotating shaft mechanism, which comprises a shaft body, a torsion assembly and a fixed shell. The torsion assembly comprises a torsion part and a fixed part. The torsion part is sleeved on the shaft body and generates torsion between the shaft body and the torsion part when the shaft body rotates. The fixed part is fixed on the outer periphery of the torsion part.

2. The rotation shaft mechanism according to claim 1, wherein The fixed shell has a fixed slot corresponding to the fixed part.

3. The rotation axis mechanism according to claim 2, wherein The fixed slot is open at one end in the axial direction of the shaft body.

4. The rotation shaft mechanism according to claim 3, wherein The fixed part is embedded in the fixed slot from the open end.

5. The rotation shaft mechanism according to claim 4, wherein The elastic member forms an arc-shaped guide-in portion at the open end.

6. The rotation shaft mechanism according to claim 4, wherein The elastic member is a bent elastic member.

7. A pivot mechanism according to any one of claims 4 to 6, wherein The bent portion of the bent elastic member is an arc-shaped bent portion, which is the arc-shaped guide-in portion.

8. The rotation shaft mechanism according to claim 1, wherein The bent elastic member further comprises a first elastic arm and a second elastic arm connected to the arc-shaped bent portion.

9. The rotation shaft mechanism according to claim 8, wherein The first elastic arm has a flat portion.

10. The rotation shaft mechanism according to claim 1, wherein The first elastic arm has at least one first elastic support protrusion on the side away from the fixed part. The second elastic arm has at least one second elastic support protrusion. The two bent elastic members have their first elastic arms connected. The torsion assembly comprises a plurality of torsion sheets. Each torsion sheet comprises a ring setting part and a fixed protrusion. The ring setting parts form the torsion part. The fixed protrusions form the fixed part. The ring setting part has an opening. The opening is opposite to or adjacent to the fixed protrusion. The fixed shell has a first limiting groove and a second limiting groove at both ends in the axial direction of the shaft body. The rotating shaft mechanism further comprises a first limiting sleeve and a second limiting sleeve. When the shaft body is sleeved in the fixed shell, the first limiting sleeve and the second limiting sleeve are sleeved on the shaft body and embedded in the first limiting groove and the second limiting groove, respectively.

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