Rotating shaft linkage structure, electronic equipment support and electronic equipment protection shell
By setting linkages and damping connections at both ends of the rotating shaft of the electronic equipment bracket, the problem of unstable linkage of the rotating shaft in the prior art is solved, a larger rotation angle and a more stable bracket structure are achieved, and the service life is extended.
Patent Information
- Application Number
- CN202420474459.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-03-11
AI Technical Summary
The shaft linkage structure of the existing electronic equipment bracket cannot achieve stable linkage, resulting in limited rotation angle and affecting the user experience.
By providing the first linkage and the second linkage at both ends of the two rotating shafts, the force balance of the rotating shaft linkage structure during movement is ensured, the linkage stability is improved, and the structural stability is strengthened through the damping rotation connection and the stopping part. .
It realizes a larger rotation angle and a more stable linkage structure, extends the service life and ensures smooth opening and storage of the connectors.
Smart Images
Figure CN222321610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic equipment accessories, in particular to a rotating shaft linkage structure, an electronic equipment bracket and an electronic equipment protective shell. Background Art
[0002] With the development of electronic devices, mobile phones and other electronic devices are used in more and more environments. For example, when watching videos on a mobile phone, using an electronic device stand to support it so that it can be raised and placed on a flat surface will undoubtedly improve the user experience. Currently, existing bracket structures generally connect two mutually rotating connectors through a rotating shaft to achieve rotation between the two connectors, so that the bracket body can rotate relative to the electronic device protective case. However, since the bracket is generally connected to the mobile phone protective case by riveting, after the bracket is connected, the bracket may be restricted or interfered by the protective case when it rotates relative to the protective case, resulting in the bracket's rotation angle being affected.
[0003] By setting two rotating shafts and realizing the rotation of the bracket through the linkage of the two rotating shafts, the problem of the bracket rotation angle being affected can be effectively solved. However, as the number of rotating shafts increases, how to realize the stable linkage of the two rotating shafts is a problem that needs to be solved urgently. Utility Model Content
[0004] In view of at least some of the problems and defects in the prior art, the embodiments of the present utility model disclose a shaft linkage structure and an electronic device bracket to solve the problem that two shafts in the prior art cannot be stably linked.
[0005] Specifically, an embodiment of the utility model provides a shaft linkage structure, for example, including: a first shaft; a first connecting member, sleeved on the first shaft; a second shaft; a second connecting member, sleeved on the second shaft; a first linkage member; and a second linkage member; wherein, one end of the first shaft and one end of the second shaft are respectively inserted into the two axial holes of the first linkage member, and the other end of the first shaft and the other end of the second shaft are respectively inserted into the two axial holes of the second linkage member, the first connecting member can rotate relative to the first linkage member and the second linkage member, and the second connecting member can rotate relative to the first linkage member and the second linkage member.
[0006] The rotating shaft linkage structure provided by the embodiment of the utility model ensures the force balance of the rotating shaft linkage structure during the movement by arranging the first linkage member and the second linkage member at the two ends of the two rotating shafts, thereby improving the stability of the rotating shaft linkage, ensuring the smooth opening and storage of the connecting parts, and further improving the service life of the rotating shaft linkage structure.
[0007] In one embodiment of the present invention, the first linkage member includes a first axial hole and a second axial hole, the second linkage member includes a third axial hole and a fourth axial hole, the first rotating shaft includes a first rotating shaft first end and a first rotating shaft second end which are arranged opposite to each other, the second rotating shaft includes a second rotating shaft first end and a second rotating shaft second end which are arranged opposite to each other, the first rotating shaft first end is inserted into the first axial hole, and the first rotating shaft second end is inserted into the third axial hole, the second rotating shaft first end is inserted into the second axial hole, and the second rotating shaft second end is inserted into the fourth axial hole.
[0008] In one embodiment of the utility model, the first connecting member includes a first sleeve, which is sleeved on the first rotating shaft and located between the first linkage member and the second linkage member; the second connecting member includes a second sleeve, which is sleeved on the second rotating shaft and located between the first linkage member and the second linkage member.
[0009] In one embodiment of the present invention, the friction force between the first sleeve and the first rotating shaft is smaller than the friction force between the second sleeve and the second rotating shaft.
[0010] In one embodiment of the utility model, the first connecting member is connected to the first rotating shaft in a damped rotational connection, a first stop portion is provided on the first rotating shaft, a second stop portion is correspondingly provided in the first shaft hole, a third stop portion is correspondingly provided in the third shaft hole, the first end of the first rotating shaft is inserted into the first shaft hole, and the first stop portion and the second stop portion are engaged with each other to limit the rotation of the first rotating shaft relative to the first linkage member, the second end of the first rotating shaft is inserted into the third shaft hole, and the first stop portion and the third stop portion are engaged with each other to limit the rotation of the first rotating shaft relative to the second linkage member.
[0011] In one embodiment of the utility model, the first linkage member is rotationally connected to the first rotating shaft in a damping manner, and the second linkage member is rotationally connected to the first rotation damping manner, a fourth anti-rotation portion is provided on the first sleeve, and a first anti-rotation portion is correspondingly provided on the first rotating shaft, the first sleeve is sleeved on the first rotating shaft, and the first anti-rotation portion and the fourth anti-rotation portion are engaged with each other to limit the rotation of the first rotating shaft relative to the first connecting member.
[0012] In an embodiment of the present invention, the first linkage member and the second linkage member are symmetrically arranged.
[0013] In one embodiment of the present invention, the number of the first linkage members is multiple, the number of the second linkage members is multiple, and the number of the first linkage members is the same as the number of the second linkage members.
[0014] Another embodiment of the present invention provides an electronic equipment bracket, for example, including: a bracket body; and the aforementioned shaft linkage structure, wherein the bracket body is connected to the first connecting member.
[0015] Another embodiment of the utility model provides an electronic device protective case, for example, including: a shell body; and an electronic device bracket, the electronic device bracket including a bracket body and a rotating shaft linkage structure as described above, the electronic device bracket is connected to the shell body through the rotating shaft linkage structure; wherein the bracket body is connected to the first connecting member, and the second connecting member is connected to the shell body.
[0016] In an embodiment of the present utility model, the rotating shaft linkage structure further includes: a fixing member, which is arranged on a side of the rotating shaft linkage structure close to the shell body and connected to the second connecting member.
[0017] It can be seen from the above that the above-mentioned technical features of the utility model can have one or more of the following beneficial effects: the shaft linkage structure provided in this embodiment, by setting the first linkage member and the second linkage member at both ends of the two shafts, can ensure the force balance of the shaft linkage structure during the movement, thereby improving the stability of the shaft linkage, ensuring the smooth opening and storage of the connecting parts, and can further improve the service life of the shaft linkage structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 This is a structural schematic diagram of a rotating shaft linkage structure provided in the first embodiment of the utility model.
[0020] Figure 2 This is a schematic diagram of the exploded structure of a rotating shaft linkage structure provided in the first embodiment of the utility model.
[0021] Figure 3 Another structural schematic diagram of a rotating shaft linkage structure provided in the first embodiment of the utility model.
[0022] Figure 4 This is another structural schematic diagram of a rotating shaft linkage structure provided in the first embodiment of the utility model.
[0023] Figure 5This is a structural schematic diagram of an electronic equipment bracket provided in the second embodiment of the utility model.
[0024] Figure 6 The present invention is a schematic structural diagram of an electronic device protective case provided in the third embodiment of the present invention.
[0025] Description of main component symbols:
[0026] 10-rotating shaft linkage structure; 100-first connecting member; 110-first shaft sleeve; 111-fourth anti-rotation part; 200-second connecting member; 210-second shaft sleeve; 300-first rotating shaft; 310-first rotating shaft first end; 320-first rotating shaft second end; 330-first anti-rotation part; 400-second rotating shaft; 410-second rotating shaft first end; 420-second rotating shaft second end; 500-first linkage member; 510-first shaft hole; 511-second anti-rotation part; 520-second shaft hole; 600-second linkage member; 610-third shaft hole; 611-third anti-rotation part; 620-fourth shaft hole; 700-fixing member;
[0027] 20-electronic equipment bracket; 21-bracket body;
[0028] 30 - electronic device protective shell; 31 - shell body; 32 - bracket storage part; 33 - electronic device bracket; 34 - bracket body. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] It should be noted that the directional terms mentioned in the embodiments of the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, rather than to limit the present invention. For the sake of understanding and ease of description, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present invention is not limited thereto.
[0031] It is understood that when a component such as a layer, film, region or substrate is referred to as being "on" another component, the component may be directly on the other component, or intervening components may also be present. In addition, in the specification, unless explicitly described to the contrary, the word "comprising" will be understood to mean including the components, but not excluding any other components. Furthermore, in the specification, "on..." means being located above or below the target component, and does not mean necessarily being located on the top based on gravity.
[0032] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0033] [First embodiment]
[0034] like Figure 1 As shown, the first embodiment of the utility model provides a shaft linkage structure 10 , for example including: a first connecting member 100 , a second connecting member 200 , a first rotating shaft 300 , a second rotating shaft 400 , a first linkage member 500 and a second linkage member 600 .
[0035] Specifically, see Figure 1 The first connecting member 100 is, for example, sleeved on the first rotating shaft 300, and the second connecting member 200 is, for example, sleeved on the second rotating shaft 400. One end of the first rotating shaft 300 and one end of the second rotating shaft 400 are respectively inserted into the two shaft holes of the first linkage member 500, and the other end of the first rotating shaft 300 and the other end of the second rotating shaft 400 are respectively inserted into the two shaft holes of the second linkage member 600. The first connecting member 100 can rotate relative to the first linkage member 500 and the second linkage member 600, and the second connecting member 200 can rotate relative to the first linkage member 500 and the second linkage member 600.
[0036] The shaft linkage structure provided in this embodiment ensures the force balance of the shaft linkage structure during movement by setting the first linkage member and the second linkage member at both ends of the two shafts, thereby improving the stability of the shaft linkage, ensuring the smooth opening and storage of the connecting parts, and further improving the service life of the shaft linkage structure.
[0037] Further, see also Figure 1 and Figure 2, the first linkage 500, for example, includes a first shaft hole 510 and a second shaft hole 520, the second linkage 600, for example, includes a third shaft hole 610 and a fourth shaft hole 620, the first rotating shaft 300, for example, includes a first rotating shaft first end 310 and a first rotating shaft second end 320 that are arranged opposite to each other, the second rotating shaft 400, for example, includes a second rotating shaft first end 410 and a second rotating shaft second end 420 that are arranged opposite to each other, the first rotating shaft first end 310 is inserted into the first shaft hole 510, and the first rotating shaft second end 320 is inserted into the third shaft hole 610, the second rotating shaft first end 410 is inserted into the second shaft hole 520, and the second rotating shaft second end 420 is inserted into the fourth shaft hole 620. For example, the first shaft hole 510, the second shaft hole 520, the third shaft hole 610 and the fourth shaft hole 620 mentioned above can all be, for example, through holes or blind holes, and the present application is not limited thereto.
[0038] In accordance with the above, see Figure 2 The first connecting member 100 includes a first sleeve 110, which is, for example, sleeved on the first rotating shaft 300 and located between the first linking member 500 and the second linking member 600. The second connecting member 200 includes, for example, a second sleeve 210, which is sleeved on the second rotating shaft 400 and located between the first linking member 500 and the second linking member 600.
[0039] The shaft linkage structure 10 provided in the first embodiment of the utility model can be applied to electronic equipment accessories, for example, and specifically applied to the shaft structure of the electronic equipment bracket as a bracket. For example, the bracket body is fixedly connected to the first connecting member 100, and the second connecting member 200 is fixedly connected to the electronic equipment protective shell, so that when the electronic equipment bracket needs to be used, the bracket body can be rotated relative to the electronic equipment protective shell to support the electronic equipment, and when the bracket is not needed, the bracket body can be rotated to be stored in the electronic equipment protective shell for easy carrying by users.
[0040] Furthermore, the friction force between the first sleeve 110 and the first rotating shaft 300 is, for example, smaller than the friction force between the second sleeve 210 and the second rotating shaft 400, thereby increasing the rotation angle of the bracket body.
[0041] For example, when the bracket body is connected to the connecting member of the single-axis rotating shaft structure, the other connecting member of the rotating shaft structure is fixed on the protective shell of the electronic device, which results in the rotation angle of the bracket body being limited, for example, it can only rotate 120°. The dual-axis rotating shaft linkage structure provided in the present application can realize the rotation of the bracket body at a larger angle through dual-axis linkage. Specifically, based on the connection between the bracket body and the first connecting member 100, as set as above, that is, the friction force between the first sleeve 110 and the first rotating shaft 300 is less than the friction force between the second sleeve 210 and the second rotating shaft 400, the bracket body can drive the first rotating shaft 300 (with smaller friction) to rotate first, and when the first rotating shaft 300 rotates to the limit, the second rotating shaft 400 starts to rotate through the transmission of the linkage member, so that the bracket body can continue to rotate after reaching the limit rotation angle of the first rotating shaft 300, that is, the bracket body can have a larger rotation angle relative to the protective shell of the mobile terminal.
[0042] See also Figure 1 The first linkage member 500 is symmetrically arranged with the second linkage member 600, for example, so as to ensure that both ends of the first rotating shaft 300 and the second rotating shaft 400 are subjected to balanced forces, thereby improving the overall stability of the rotating shaft linkage structure 10.
[0043] Furthermore, the number of the first linkage members 500 is, for example, multiple, and the number of the second linkage members 600 is, for example, multiple. By stacking multiple linkage members, the strength of the linkage members can be enhanced and the life of the linkage members can be improved. It should be noted that the number of the first linkage members 500 is the same as the number of the second linkage members 600, so as to ensure the force balance at both ends of the rotating shaft. The multiple mentioned above refers to two or more. For example, Figure 2 As shown in FIG, the number of the first linkage member 500 and the number of the second linkage member are, for example, two, but this is certainly not limited to the present application.
[0044] In one embodiment, see Figure 3, the first connecting member 100 is, for example, connected to the first rotating shaft 300 with damped rotation, and the damped rotation connection mentioned here is, for example, a rotational connection between the first connecting member 100 and the first rotating shaft 300 but with damping. For example, the first connecting member 100 is, for example, interference fit with the first rotating shaft 300, or a coating for increasing friction is applied between the first connecting member 100 and the first rotating shaft 300, or the first connecting member 100 and the first rotating shaft 300 are made of materials with greater friction, etc., and the present application does not limit this, as long as the first connecting member 100 and the first rotating shaft 300 can be rotationally connected and there is damping between the two. The first rotating shaft 300 is provided with a first stopper 330, the first shaft hole 510 is correspondingly provided with a second stopper 511, the third shaft hole 610 is correspondingly provided with a third stopper 611, the first end 310 of the first rotating shaft is inserted into the first shaft hole 510, and the first stopper 330 and the second stopper 511 are mutually engaged to limit the first rotating shaft 300 from rotating relative to the first linkage 500, the second end 320 of the first rotating shaft is inserted into the third shaft hole 610, and the first stopper 330 and the third stopper 611 are mutually engaged to limit the first rotating shaft 300 from rotating relative to the second linkage 600. For example, the stopper mentioned above is, for example, a stopper section, and the cross-sections of the first end 310 of the first rotating shaft and the second end 320 of the first rotating shaft are, for example, non-circular, and of course, the sections of the first shaft hole 510 and the third shaft hole 610 are also, for example, non-circular to match them. By arranging matching anti-rotation parts in the rotating shaft and the linkage member, the linkage member and the rotating shaft are relatively fixed.
[0045] In another specific embodiment, see Figure 4 , the first linkage member 500 and the second linkage member 600 are both connected to the first rotating shaft 300 in a damped rotational connection. The damped rotational connection mentioned here is the same as that mentioned above and will not be elaborated here. The first sleeve 110 is, for example, provided with a fourth anti-rotation portion 111, and the first rotating shaft 300 is, for example, correspondingly provided with a first anti-rotation portion 330, the first sleeve 110 is sleeved on the first rotating shaft 300, and the first anti-rotation portion 330 and the fourth anti-rotation portion 111 are mutually engaged to limit the first rotating shaft 300 from rotating relative to the first connecting member 100. For example, the fourth anti-rotation portion mentioned above is also, for example, an anti-rotation section. By providing matching anti-rotation portions in the rotating shaft and the connecting member, the connecting member and the rotating shaft are relatively fixed.
[0046] Preferably, the second rotating shaft 400 has the same structure as the first rotating shaft 300, and the connection method between the second rotating shaft 400 and the second connecting member 200, the first linkage member 500, and the second linkage member 600 is exactly the same as the first rotating shaft 300, thereby ensuring the force balance of the entire linkage structure during movement.
[0047] To summarize, the shaft linkage structure provided in the first embodiment of the utility model ensures the force balance of the shaft linkage structure during movement by setting the first linkage member and the second linkage member at both ends of the two shafts, thereby improving the stability of the shaft linkage, ensuring smooth opening and storage of the connecting parts, and further improving the service life of the shaft linkage structure.
[0048] [Second embodiment]
[0049] See also Figure 5 The second embodiment of the utility model provides an electronic device bracket 20, comprising the shaft linkage structure 10 and the bracket body 21 as described in the first embodiment, wherein the bracket body 21 is connected to the first connecting member 100. The specific structure of the shaft linkage structure 10 is the same as that described in the first embodiment, and will not be described in detail here.
[0050] [Third embodiment]
[0051] See also Figure 6 The third embodiment of the utility model provides an electronic device protective shell 30, including a shell body 31 and an electronic device bracket 33, wherein the electronic device bracket 33 includes a bracket body 34 and the shaft linkage structure 10 as described in the first embodiment, and the electronic device bracket 33 is connected to the shell body 31 through the shaft linkage structure 10. Specifically, the bracket body 34 is connected to the first connecting member 100, and the second connecting member 200 is connected to the shell body 31. The bracket body 34 is, for example, riveted and fixed to the first connecting member 100, and the second connecting member 200 is, for example, riveted and fixed to the shell body 31. The specific structure of the shaft linkage structure 10 is the same as that described in the first embodiment, and will not be repeated here.
[0052] Further, see Figure 6 , the rotating shaft linkage structure 10 further includes a fixing member 700. Specifically, the fixing member 700 is disposed on a side of the rotating shaft linkage structure 10 close to the shell body 31, and is connected to the second connecting member 200. By providing the fixing member 700, the rotating shaft and the linkage member can be fixed at a horizontal position of the shell body 31, so that the connecting member of the first connecting member 100 and the second connecting member 200 that is not connected to the external device can be rotated in a direction away from the external device, thereby facilitating the rotation of the connecting member.
[0053] In addition, see Figure 6 For example, a bracket storage portion 32 is provided on the shell body 31. When the electronic device bracket 33 is in the storage state, the electronic device bracket 33 is stored in the bracket storage portion 32, thereby reducing the overall thickness of the electronic device protection shell 30 and making it easier for users to carry.
[0054] It can be understood that the aforementioned embodiments are merely exemplary descriptions of the present invention. The technical solutions of the various embodiments can be arbitrarily combined and used in combination, provided that the technical features do not conflict, the structures do not contradict, and the purpose of the present invention is not violated.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A shaft linkage structure, characterized in that: include: The first rotating shaft; A first connecting member, sleeved on the first rotating shaft; The second rotating shaft; A second connecting member, sleeved on the second rotating shaft; First linkage; as well as The second linkage; Among them, one end of the first rotating shaft and one end of the second rotating shaft are respectively inserted into the two axial holes of the first linkage member, and the other end of the first rotating shaft and the other end of the second rotating shaft are respectively inserted into the two axial holes of the second linkage member, the first connecting member can rotate relative to the first linkage member and the second linkage member, and the second connecting member can rotate relative to the first linkage member and the second linkage member.
2. The shaft linkage structure as claimed in claim 1, characterized in that: The first linkage member includes a first axial hole and a second axial hole, the second linkage member includes a third axial hole and a fourth axial hole, the first rotating shaft includes a first rotating shaft first end and a first rotating shaft second end which are arranged opposite to each other, the second rotating shaft includes a second rotating shaft first end and a second rotating shaft second end which are arranged opposite to each other, the first rotating shaft first end is inserted into the first axial hole, and the first rotating shaft second end is inserted into the third axial hole, the second rotating shaft first end is inserted into the second axial hole, and the second rotating shaft second end is inserted into the fourth axial hole.
3. The shaft linkage structure as claimed in claim 2, characterized in that: The first connecting member includes a first sleeve, which is sleeved on the first rotating shaft and located between the first linkage member and the second linkage member; The second connecting member includes a second shaft sleeve, which is sleeved on the second rotating shaft and located between the first linkage member and the second linkage member.
4. The shaft linkage structure as claimed in claim 3, characterized in that: The friction force between the first sleeve and the first rotating shaft is smaller than the friction force between the second sleeve and the second rotating shaft.
5. The shaft linkage structure as claimed in claim 2, characterized in that: The first connecting member is connected to the first rotating shaft in a damped rotation manner, a first stop portion is arranged on the first rotating shaft, a second stop portion is correspondingly arranged in the first shaft hole, and a third stop portion is correspondingly arranged in the third shaft hole, the first end of the first rotating shaft is inserted into the first shaft hole, and the first stop portion and the second stop portion are engaged with each other to limit the first rotating shaft from rotating relative to the first linkage member, the second end of the first rotating shaft is inserted into the third shaft hole, and the first stop portion and the third stop portion are engaged with each other to limit the first rotating shaft from rotating relative to the second linkage member.
6. The shaft linkage structure as claimed in claim 3, characterized in that: The first linkage member is connected to the first rotating shaft in a damped rotation manner, and the second linkage member is connected to the first rotating shaft in a damped rotation manner. A fourth anti-rotation portion is provided on the first sleeve, and a first anti-rotation portion is correspondingly provided on the first rotating shaft. The first sleeve is sleeved on the first rotating shaft, and the first anti-rotation portion and the fourth anti-rotation portion are engaged with each other to limit the rotation of the first rotating shaft relative to the first connecting member.
7. The shaft linkage structure according to any one of claims 1 to 6, characterized in that: The first linkage member and the second linkage member are symmetrically arranged.
8. The shaft linkage structure as claimed in claim 7, characterized in that: The number of the first linkage members is plural, and the number of the second linkage members is plural, wherein the number of the first linkage members is the same as the number of the second linkage members.
9. An electronic equipment bracket, characterized in that: include: The support body; as well as According to the rotating shaft linkage structure as described in any one of claims 1 to 8, the bracket body is connected to any one of the first connecting member and the second connecting member.
10. An electronic device protective case, characterized in that: include: Shell body; as well as An electronic device bracket, the electronic device bracket comprising a bracket body and a rotating shaft linkage structure according to any one of claims 1 to 8, the electronic device bracket being connected to the housing body via the rotating shaft linkage structure; Wherein, the bracket body is connected to the first connecting member, and the second connecting member is connected to the shell body.
11. The electronic device protective case as claimed in claim 10, characterized in that: The rotating shaft linkage structure further includes: a fixing member, which is arranged on a side of the rotating shaft linkage structure close to the shell body and connected to the second connecting member.