Device convenient for holding electronic equipment
By designing a deformable auxiliary grip component combined with an electronic device connection plate, the problem of low fun in traditional ring buckles is solved, achieving stable grip and increasing fun, and adapting to a variety of electronic devices.
Patent Information
- Application Number
- CN202520159855.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Traditional ring clips attached to phones or phone cases are not very fun and fail to provide users with interactivity or a sense of surprise. Furthermore, holding a large-screen phone for extended periods can easily lead to finger fatigue and the phone slipping.
Design a device that includes an assembly connection component and a handheld component. The assembly connection component is connected to an electronic device via a connecting plate and connectors. The handheld component is an auxiliary gripping component made of an elastic and deformable material that can be unfolded or rolled up to adapt to different gripping needs, increasing fun and stability.
With flexible and deformable auxiliary grips, users can hold electronic devices more stably, reduce hand fatigue, increase the fun of use, and adapt to the grip needs in different scenarios.
Smart Images

Figure CN223957578U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electronic equipment accessory technical field more specifically, relate to a device that holds electronic equipment conveniently. BACKGROUND
[0002] With the continuous development and use of mobile phones, tablet computers and other electronic equipment, people's aesthetic sense of mobile phones has also changed a lot, from the small screen in the past to the large screen now, accordingly, the weight of the mobile phone is also increasing, and the related electronic equipment accessories are also increasing, such as mobile phone protective shell, but long time holding the large screen mobile phone, fingers are easy to fatigue, a little careless will lead to mobile phone slip or fall, cause the damage of mobile phone, therefore, the finger ring buckle is arranged on the mobile phone or mobile phone protective shell, but the traditional finger ring buckle is low in interest, it is difficult to bring the interactivity or surprise feeling to the user. SUMMARY
[0003] The utility model solves the technical problem that long time holds the large screen mobile phone, fingers are easy to fatigue, a little careless will lead to mobile phone slip or fall, cause the damage of mobile phone, therefore, the finger ring buckle is arranged on the mobile phone or mobile phone protective shell, but the traditional finger ring buckle is low in interest, it is difficult to bring the interactivity or surprise feeling to the user, in view of the above defects of prior art, provide a device that holds electronic equipment conveniently.
[0004] The utility model adopts the technical scheme in the technical problem thereof:
[0005] Constitute a device that holds electronic equipment conveniently, including:
[0006] The assembly connecting assembly includes the connecting plate, the first connecting piece for being connected with the electronic equipment or the electronic equipment protective shell is arranged at the bottom of the connecting plate;
[0007] The holding assembly includes the second connecting piece connected with the top of the connecting plate and the auxiliary holding piece arranged on the second connecting piece for the user to hold the electronic equipment, the auxiliary holding piece is made of elastic deformable material, and the auxiliary holding piece has two states, when being in the first state, the auxiliary holding piece is in the unfolded state, when being in the second state, the auxiliary holding piece is in the curled state.
[0008] Optionally, the assembly connecting assembly further includes the third connecting piece arranged at the top of the connecting plate, and the connecting plate is detachably connected with the second connecting piece through the third connecting piece.
[0009] Optionally, the third connecting piece includes the assembly groove arranged at the top of the connecting plate, the opening of the assembly groove is provided with the anti-drop limiting plate, and the side wall of the assembly groove is provided with the elastic abutting piece.
[0010] Optionally, the second connecting piece comprises an assembly plate which can be inserted into the assembly groove, the elastic abutting piece is used for abutting against one side of the assembly plate so that the assembly plate abuts against the assembly groove, and the anti-withdrawal limiting plate prevents the assembly plate from withdrawing out of the assembly groove.
[0011] Optionally, the second connecting piece comprises an assembly plate which can be inserted into the assembly groove, a first assembly protruding column is arranged on the top of the assembly plate, a first connecting hole is arranged on the top of the first assembly protruding column, a pressing protruding column is movably arranged in the first connecting hole, an elastic piece is arranged in the first connecting hole and acts on the bottom of the first connecting hole and the bottom of the pressing protruding column, a first anti-withdrawal part is arranged on the bottom of the pressing protruding column, a second anti-withdrawal part which is matched with the first anti-withdrawal part and is used for preventing the pressing protruding column from withdrawing out of the connecting hole is arranged at the opening of the first connecting hole, the auxiliary holding piece is sleeved on the outer peripheral wall of the pressing protruding column, and a first limiting cap is arranged on the top of the pressing protruding column.
[0012] Optionally, the second connecting piece further comprises a second assembly protruding column arranged on the top of the assembly plate, a second connecting hole is arranged on the top of the second assembly protruding column, and a connecting protruding column is arranged in the second connecting hole and provided with a second limiting cap.
[0013] Optionally, the middle part of the auxiliary holding piece is provided with a through hole penetrating through the top and the bottom of the auxiliary holding piece, the auxiliary holding piece is sleeved on the outer peripheral wall of the connecting protruding column through the through hole and can rotate relative to the connecting protruding column.
[0014] Optionally, one side of the anti-withdrawal limiting plate is provided with an avoiding slot for avoiding the second assembly protruding column.
[0015] Optionally, one side of the assembly plate away from the second assembly protruding column is provided with a pattern which can bring interest when the assembly plate rotates.
[0016] Optionally, the elastic abutting piece is an elastic abutting plate arranged on one side of the assembly groove and integrally formed with the connecting plate, the thickness of the elastic abutting plate gradually decreases from the direction away from the assembly groove to the direction close to the assembly groove, and the side of the elastic abutting plate in contact with the assembly plate is provided with an anti-skid pattern and is in an arc shape.
[0017] The utility model discloses the beneficial effect lies in:
[0018] 1, the utility model discloses through the auxiliary holding piece in the convenient holding subassembly, user can hold electronic equipment more stably, this is more important when carrying out photographing, recording video or long -time handheld use, and can effectively reduce hand fatigue;
[0019] 2. The auxiliary holding member is made of an elastically deformable material and has two states, in the first state, the auxiliary holding member is in an unfolded state, in the second state, the auxiliary holding member is in a curled state, at this time, the user can hook the auxiliary holding member with fingers to achieve the purpose of auxiliary holding the electronic device, in the curled state, the user can hook the auxiliary holding member on the fingers according to the size of the fingers and the holding habit, realize the personalized holding mode, thereby increasing the interestingness when the user uses, and the auxiliary holding member can be conveniently stored or carried in the straight bar state, and can be quickly curled when needed, adapt to the holding requirements in different scenes;
[0020] 3. The first connecting member can be connected with various electronic devices, so that the utility model can be applicable to mobile phones, tablet computers, cameras and various electronic devices, and has strong universality and market potential. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the utility model will be further described below in combination with the drawings and the embodiments, and the drawings in the following description are only part of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings:
[0022] Figure 1 It is the overall shaft measurement schematic diagram in the embodiment one of the utility model.
[0023] Figure 2 It is the overall explosion schematic diagram in the embodiment one of the utility model.
[0024] Figure 3 It is another overall explosion schematic diagram in the embodiment one of the utility model.
[0025] Figure 4 It is the A part enlarged schematic diagram in the embodiment one of the utility model. Figure 3
[0026] Figure 5 It is the front schematic diagram in the embodiment one of the utility model.
[0027] Figure 6 It is the side schematic diagram in the embodiment one of the utility model.
[0028] Figure 7 It is the schematic diagram when the auxiliary holding member is curled into a ring in the embodiment one of the utility model.
[0029] Figure 8 It is the overall explosion schematic diagram in the embodiment two of the utility model.
[0030] Figure 9 is the side view of the embodiment two of the utility model.
[0031] Figure 10 is the section view of the B-B line of the embodiment two of the utility model. Figure 9
[0032] The reference signs are:
[0033] 110, connecting plate; 120, first connecting piece; 130, third connecting piece; 131, assembly groove; 132, anti-off limiting plate; 132.1, avoiding slot; 133, elastic abutting piece; 133.1, anti-skid line;
[0034] 210, second connecting piece; 211, assembly plate; 212, second assembly convex column; 213, second connecting hole; 214, connecting convex column; 215, second limiting cap; 216, to-be-mounted part; 217, first assembly convex column; 217.1, first connecting hole; 217.2, elastic piece; 217.3, second anti-off part; 218, pressing convex column; 218.1, first anti-off part; 218.2, first limiting cap; 219, spring positioning convex part; 220, auxiliary gripping piece; 221, through hole. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.
[0036] In the description of the embodiments of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, 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. For the person skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0037] In the embodiments of the present application, unless specifically defined and limited otherwise, a first feature is "on", "under", "above", or "over" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature "below", "under", and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.
[0038] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0039] Embodiment one
[0040] The utility model discloses embodiments such as Figures 1-7As shown in the figure, it relates to a device for holding electronic equipment conveniently, which comprises an assembly connecting component and a holding component, wherein the assembly connecting component comprises a connecting plate 110, a first connecting piece 120 arranged at the bottom of the connecting plate 110 for connecting with electronic equipment or a protective shell of the electronic equipment; the holding component comprises a second connecting piece 210 connected with the top of the connecting plate 110 and an auxiliary holding piece 220 arranged on the second connecting piece 210 for holding the electronic equipment conveniently, further, since the auxiliary holding piece 220 is arranged on the second connecting piece 210, the user can strengthen the stability when holding the electronic equipment by using the auxiliary holding piece 220, in the embodiment, the electronic equipment can be a mobile phone, a power bank and the like, the first connecting piece 120 is annular and can be a magnetic piece and / or an adhesive layer, when the mobile phone is protected by a magnetic mobile phone shell, the magnetic piece can be matched with the magnetic mobile phone shell for magnetic attraction, so as to make the connecting plate 110 detachably connected with the mobile phone or the mobile phone shell, when it is needed to separate the mobile phone from the connecting plate 110, the user only needs to overcome the magnetic force of the magnetic piece and the magnetic mobile phone shell to separate the mobile phone from the connecting plate 110, when the first connecting piece 120 is an adhesive layer, the connecting plate 110 can be bonded with the mobile phone, the mobile phone shell or the power bank through the adhesive layer, the adhesive layer can be quick-drying glue, hot melt adhesive and the like, the auxiliary holding piece 220 is made of an elastic deformable material, and the auxiliary holding piece 220 has two states, in the first state, the auxiliary holding piece 220 is in an unfolded state, wherein the unfolded state can be a straight strip, in the second state, the auxiliary holding piece 220 is in a curled state, wherein the curled state can be annular, at this time, the user can hook the auxiliary holding piece 220 with fingers to hold the electronic equipment, further, the auxiliary holding piece 220 in the curled state can be hooked on the fingers according to the size of the fingers and the holding habit of the user, to realize the personalized holding mode, the auxiliary holding piece 220 in the unfolded state can be conveniently stored or carried, and can be quickly curled when needed, to adapt to the holding requirements in different scenes, the diameter of the cross section of the second limiting cap 215 is smaller than the width of the auxiliary holding piece 220, the auxiliary holding piece 220 can be a snap ring, further, the assembly connecting component further comprises a third connecting piece 130 arranged at the top of the connecting plate 110, the connecting plate 110 is detachably connected with the second connecting piece 210 through the third connecting piece 130, in use, the user can connect with the electronic equipment through the first connecting piece 120, and then detachably connect the second connecting piece 210 through the third connecting piece 130.
[0041] Referring to Figures 1-3In the embodiment, the third connecting piece 130 comprises an assembly groove 131 arranged on the top of the connecting plate 110, a anti-off limiting plate 132 is arranged at the opening of the assembly groove 131, and an elastic abutting piece 133 is arranged on the side wall of the assembly groove 131. Further, the second connecting piece 210 comprises an assembly plate 211 which can be inserted into the assembly groove 131, the elastic abutting piece 133 can be used to abut one side of the assembly plate 211 so that the assembly plate 211 abuts against the inner wall of the assembly groove 131, and the anti-off limiting plate 132 can prevent the assembly plate 211 from coming off the assembly groove 131. Specifically, the user can insert the assembly plate 211 into the assembly groove 131 obliquely, and after the assembly plate 211 is inserted into the assembly groove 131, the elastic abutting piece 133 will push one side of the assembly plate 211, so that the other side of the assembly plate 211 abuts against the inner wall of the assembly groove 131, so as to install the assembly plate 211 in the assembly groove 131. When it is needed to take out the assembly plate 211 from the assembly groove 131, the elastic abutting piece 133 only needs to be removed from the abutment of the assembly plate 211, and then the assembly plate 211 can be taken out from the assembly groove. Optionally, the assembly groove 131 penetrates through the top and bottom of the connecting plate 110.
[0042] Referring to Figures 1-3 In the embodiment, the second connecting piece 210 further comprises a second assembly protruding column 212 arranged on the top of the assembly plate 211, the top of the second assembly protruding column 212 is provided with a second connecting hole 213, and a connecting protruding column 214 is arranged in the second connecting hole 213. The top of the connecting protruding column 214 is provided with a second limiting cap 215. Further, the second assembly protruding column 212 and the connecting protruding column 214 can be fixedly connected or detachably connected. For example, in the embodiment, the second connecting hole 213 can be a threaded hole, and the connecting protruding column 214 can be an external thread column. The second assembly protruding column 212 and the connecting protruding column 214 are connected through the threaded cooperation of the external thread column and the threaded hole. The auxiliary holding piece 220 can be disassembled for maintenance or replacement by removing the connection between the second assembly protruding column 212 and the connecting protruding column 214. The second limiting cap 215 is in the shape of a flat cylinder. In some embodiments, the second connecting hole 213 can be a riveting hole, and the connecting protruding column 214 can be a rivet which can be riveted with the riveting hole. Alternatively, the second connecting hole 213 can be a fixed clamping hole, and the connecting protruding column 214 can be a fixed clamping joint which can be clamped with the fixed clamping hole.
[0043] Referring to Figures 1-7In the embodiment, the middle part of the auxiliary holding member 220 is provided with a through hole 221 penetrating the top and bottom thereof, the auxiliary holding member 220 is sleeved on the outer circumferential wall of the connecting protruding column 214 through the through hole 221 and can rotate relative to the connecting protruding column 214, the outer threaded column is provided with a to-be-mounted part 216 for sleeving and rotating of the auxiliary holding member 220 at one end close to the second limiting cap 215, the outer circumferential wall of the to-be-mounted part 216 has a smaller friction coefficient, so that the auxiliary holding member 220 can rotate relative to the connecting protruding column 214 more smoothly, further, the diameter of the cross section of the second limiting cap 215 is larger than the hole diameter of the through hole 221, so that the auxiliary holding member 220 cannot be separated from the connecting protruding column 214 when being sleeved on the outer circumferential wall of the connecting protruding column 214 through the through hole 221, the user can hook the auxiliary holding member 220 with hands, and then can rotate the mobile phone, when the user does not need to connect the utility model with the electronic equipment, the assembly plate 211 can be taken out from the assembly groove, at this time, the user can hook the auxiliary holding member 220 with hands, and then can rotate the assembly plate 211, so as to increase the entertainment and interest of the utility model, in some embodiments, the user can also use the auxiliary holding member 220 to surround the wrist, so as to achieve the purpose of holding the electronic equipment.
[0044] Referring to Figures 1-3 In the embodiment, one side of the anti-separation limiting plate 132 is provided with an avoiding groove 132.1 for avoiding the second assembly protruding column 212, the avoiding groove 132.1 avoids interference or collision between the second assembly protruding column 212 and the anti-separation limiting plate 132 when the assembly plate 211 is assembled in the assembly groove 131, so as to avoid assembly difficulty or damage to components.
[0045] Referring to Figures 1-7In the embodiment, the assembling plate 211 is provided with interesting patterns on the side away from the second assembling protrusion 212, which can be a pointer, a flower, etc. The cross sections of the assembling groove 131 and the assembling plate 211 are circular or elliptical. Further, the elastic abutting piece 133 is an elastic abutting plate provided on one side of the assembling groove 131 and integrally formed with the connecting plate 110. The thickness of the elastic abutting plate gradually decreases from the side away from the assembling groove 131 to the side close to the assembling groove 131. The side of the elastic abutting plate in contact with the assembling plate 211 is provided with anti-skid patterns 133.1 and is arc-shaped. Specifically, since the thickness of the elastic abutting plate gradually decreases from the side away from the assembling groove 131 to the side close to the assembling groove 131, when the user needs to disassemble the assembling plate 211 from the assembling groove 131, the user only needs to press the side of the elastic abutting plate close to the assembling groove 131, so that the side of the elastic abutting plate close to the assembling groove 131 is deformed downward to release the abutment with the assembling plate 211, thereby facilitating the user to disassemble the assembling plate 211 from the assembling groove 131. Since the cross sections of the assembling plate 211 are circular or elliptical, and the side of the elastic abutting plate in contact with the assembling plate 211 is arc-shaped, the elastic abutting plate can better adhere to the assembling plate 211, thereby increasing the contact area between the elastic abutting plate and the assembling plate 211. Since the side of the elastic abutting plate in contact with the assembling plate 211 is provided with anti-skid patterns 133.1, the friction between the assembling plate 211 and the elastic abutting plate is further increased.
[0046] Embodiment Two
[0047] Reference Figures 8-10The difference between the embodiment one and the embodiment two is that the second connecting member comprises an assembling plate which is inserted into the assembling groove, the top of the assembling plate is provided with a first assembling column 217, the top of the first assembling column 217 is provided with a first connecting hole 217.1, a pressing column 218 is movably installed in the first connecting hole 217.1, an elastic member 217.2 is arranged in the first connecting hole 217.1 and acts on the bottom of the first connecting hole 217.1 and the bottom of the pressing column 218, the bottom of the pressing column 218 is provided with a first anti-falling part 218.1, a second anti-falling part 217.3 is arranged at the opening of the first connecting hole 217.1 and is matched with the first anti-falling part 218.1 to prevent the pressing column 218 from falling out of the connecting hole, the auxiliary holding member 220 is sleeved on the outer circumferential wall of the pressing column 218, the top of the pressing column 218 is provided with a first limiting cap 218.2, further, the user can press down the pressing column 218 to make the first limiting cap 218.2 cooperate with the top of the first assembling column 217 to clamp the auxiliary holding member 220, so that the auxiliary holding member 220 can quickly change from the unfolded state to the curled state, in the embodiment, the unfolded state is specifically flat, and the curled state is specifically ring-shaped, when the user stops pressing down the pressing column 218, the pressing column 218 is pushed to reset by the action force of the elastic member 217.2 which is applied on the bottom of the first connecting hole 217.1 and the bottom of the pressing column 218, in the embodiment, the elastic member 217.2 is a spring, the bottom of the first connecting hole 217.1 is provided with a spring positioning convex part 219, and the spring is sleeved on the positioning convex part 219 to be positioned.
[0048] It should be understood that, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall belong to the protection scope of the appended claims of the utility model.
Claims
1. An apparatus for facilitating the gripping of an electronic device, the apparatus comprising: The utility model relates to an electronic device assembly and holding assembly, comprising: an assembly and connecting component, comprising a connecting plate (110) and a first connecting piece (120) arranged at the bottom of the connecting plate (110) for connecting with an electronic device or a protective shell of the electronic device; a holding component, comprising a second connecting piece (210) connected with the top of the connecting plate (110) and an auxiliary holding piece (220) arranged on the second connecting piece (210) for facilitating a user to hold the electronic device, the auxiliary holding piece (220) is made of an elastically deformable material, and the auxiliary holding piece (220) has two states, in the first state, the auxiliary holding piece (220) is in an unfolded state, and in the second state, the auxiliary holding piece (220) is in a curled state.
2. The device of claim 1, wherein, The assembly and connecting component further comprises a third connecting piece (130) arranged at the top of the connecting plate (110), and the connecting plate (110) is detachably connected with the second connecting piece (210) through the third connecting piece (130).
3. The device of claim 2, wherein, The third connecting piece (130) comprises an assembly groove (131) arranged at the top of the connecting plate (110), a anti-falling limiting plate (132) is arranged at the opening of the assembly groove (131), and an elastic abutting piece (133) is arranged on one side wall of the assembly groove (131).
4. The device of claim 3, wherein, The second connecting piece (210) comprises an assembly plate (211) which can be inserted into the assembly groove, a first assembly protruding column (217) is arranged at the top of the assembly plate (211), a first connecting hole (217.1) is arranged at the top of the first assembly protruding column (217), a pressing protruding column (218) is movably arranged in the first connecting hole (217.1), an elastic piece (217.2) is arranged in the first connecting hole (217.1) and acts on the bottom of the first connecting hole (217.1) and the bottom of the pressing protruding column (218), a first anti-falling part (218.1) is arranged at the bottom of the pressing protruding column (218), a second anti-falling part (217.3) which is matched with the first anti-falling part (218.1) and used for preventing the pressing protruding column (218) from falling out of the first connecting hole is arranged at the opening of the first connecting hole (217.1), the auxiliary holding piece (220) is sleeved on the outer peripheral wall of the pressing protruding column (218), and a first limiting cap (218.2) is arranged at the top of the pressing protruding column (218).
5. The device of claim 3, wherein, The second connecting piece (210) comprises an assembly plate (211) which can be inserted into the assembly groove (131), the elastic abutting piece (133) can be used for abutting against one side of the assembly plate (211) so that the assembly plate (211) abuts against in the assembly groove (131), and the anti-falling limiting plate (132) can prevent the assembly plate (211) from falling out of the assembly groove (131).
6. The device of claim 5, wherein, The second connecting piece (210) further comprises a second assembly protruding column (212) arranged on the top of the assembly plate (211), the top of the second assembly protruding column (212) is provided with a second connecting hole (213), a connecting protruding column (214) is arranged in the second connecting hole (213), the top of the connecting protruding column (214) is provided with a second limiting cap (215).
7. The device of claim 6, wherein, The middle part of the auxiliary holding piece (220) is provided with a through hole (221) penetrating through the top and the bottom thereof, the auxiliary holding piece (220) is sleeved on the outer peripheral wall of the connecting protruding column (214) through the through hole (221) and can rotate relative to the connecting protruding column (214).
8. The device of claim 6, wherein, One side of the anti-falling limiting plate (132) is provided with an avoiding slot (132.1) for avoiding the second assembly protruding column (212).
9. The device of claim 6, wherein, The side of the assembly plate (211) away from the second assembly protruding column (212) is provided with a pattern capable of bringing interestingness when the assembly plate (211) rotates.
10. The device of claim 4 or 6, wherein The elastic abutting piece (133) is an elastic abutting plate arranged on one side of the assembly groove (131) and integrally formed with the connecting plate (110), the thickness of the elastic abutting plate gradually decreases from the direction away from the assembly groove (131) to the direction close to the assembly groove (131), one side of the elastic abutting plate in contact with the assembly plate (211) is provided with an anti-skid pattern (133.1) and is arc-shaped.