Gasket and fixing frame

Abstract

The utility model relates to a gasket and a fixing frame, and belongs to the technical field of sockets. The gasket is of an annular structure, and one surface of the gasket is provided with a slope-shaped structure and / or a plurality of protruding structures. The slope-shaped structure is located on the outer edge of the gasket, the inclined face of the slope-shaped structure faces the center line of the gasket, and the inclined face is used for making contact with the outer edge of the head of a screw. The gasket comprises a center line and a plurality of protruding structures, the protruding structures are located on the inner edge of the gasket and distributed in the circumferential direction of the center line at intervals, the inner wall faces, close to the center line, of the protruding structures are flush with the inner side wall of the gasket, and the protruding structures are used for penetrating into the head of the screw. By the adoption of the fixing piece, the downward pressure of a screw on the fixing piece in the wall opening installation process can be reduced, and therefore deformation of the fixing piece is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sockets, and in particular to a gasket and a fixing bracket. Background Art

[0002] A wall switch is a switch or socket that is fixed to the wall.

[0003] For example, a socket consists of a mounting bracket, functional components, and a panel. The base box for mounting the socket is pre-buried in the wall. The mounting bracket has a cavity inside, through which the neutral and live wires pass. The cavity houses the functional components. The mounting bracket is fixed to the base box with screws. The functional components are electrically connected to the neutral and live wires, respectively. The panel has a jack for inserting an electrical plug.

[0004] Currently, during the assembly process of panel sockets, the screws exert a large downward pressure on the fixing frame, which is prone to deformation, causing the functional components to deviate from the sockets, resulting in socket failure and even safety hazards. Utility Model Content

[0005] The present disclosure provides a method for solving the technical problems existing in the related art, and the technical solution is as follows:

[0006] In a first aspect, the present disclosure provides a gasket, wherein the gasket is an annular structure, and one surface of the gasket has a sloped structure and / or a plurality of protruding structures;

[0007] The sloped structure is located at the outer edge of the gasket, the inclined surface of the sloped structure faces the center line of the gasket, and the inclined surface is used to contact the outer edge of the screw head;

[0008] The multiple protrusion structures are respectively located on the inner edge of the gasket and are circumferentially spaced around the center line. The inner wall surface of the protrusion structure close to the center line is flush with the inner side wall of the gasket. The protrusion structure is used to penetrate the screw head.

[0009] In a possible implementation, the sloped structure is an annular sloped structure and is coaxial with the gasket.

[0010] In a possible implementation, an outer wall surface of the sloped structure that faces away from the center line is flush with an outer side wall of the gasket.

[0011] In a possible implementation, the gasket has two sloped structures, and the two sloped structures are located on both sides of the center line.

[0012] In a possible implementation, the inclined surface of each slope-like structure has a V-shaped groove, and two opposite groove walls in the V-shaped groove are respectively used to contact the outer edge of the screw head.

[0013] In a possible implementation, the angle between the inclined surface and the center line is within the interval of [30°, 60°].

[0014] In a possible implementation, the top of each protruding structure has a top corner near an adjacent protruding structure, and the top corner is used to penetrate the screw head.

[0015] In a possible implementation, the included angle between any two edges forming the vertex angle is no greater than 90°.

[0016] In a possible implementation, the plurality of protruding structures are evenly distributed.

[0017] In a second aspect, the present disclosure provides a fixing bracket for fixing a switch or a socket to a mounting surface, wherein the fixing bracket includes a gasket as described in the first aspect and possible implementations thereof.

[0018] The technical solution provided by the present disclosure includes at least the following beneficial effects:

[0019] The present disclosure provides a gasket in which the inclined surface of a sloped structure contacts the outer edge of a screw head, increasing the effective supporting diameter of the support surface on the screw head, thereby reducing the supporting force of the gasket on the screw head. A plurality of raised structures can penetrate the screw head, increasing the friction coefficient between the support surface and the fixing frame, thereby reducing the supporting force of the gasket on the screw head. The vertical component of the supporting force of the gasket on the screw head and the downward pressure of the screw on the fixing frame act as a reaction force to each other. Therefore, by providing the above-mentioned sloped structure and multiple raised structures, the downward pressure of the screw on the fixing frame can be reduced, thereby reducing the deformation of the fixing member.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 is a structural schematic diagram of a gasket shown in an embodiment of the present disclosure;

[0023] Figure 2 This is a schematic diagram of an assembly of a panel socket shown in an embodiment of the present disclosure;

[0024] Figure 3 1 is a schematic diagram of an assembly of a screw and a washer shown in an embodiment of the present disclosure;

[0025] Figure 4 is a structural schematic diagram of a gasket shown in an embodiment of the present disclosure;

[0026] Figure 5 is a structural schematic diagram of a gasket shown in an embodiment of the present disclosure;

[0027] Figure 6 is a structural schematic diagram of a gasket shown in an embodiment of the present disclosure;

[0028] Figure 7 is a structural schematic diagram of a gasket shown in an embodiment of the present disclosure;

[0029] Figure 8 is a structural schematic diagram of a gasket shown in an embodiment of the present disclosure;

[0030] Figure 9 is a structural schematic diagram of a gasket shown in an embodiment of the present disclosure;

[0031] Figure 10 It is a structural schematic diagram of a panel socket shown in an embodiment of the present disclosure.

[0032] Legend

[0033] 100, gasket; 101, outer wall; 102, inner wall; 103, center line;

[0034] 11. Slope structure;

[0035] 111. inclined surface; 112. outer wall surface; 113. chamfered structure;

[0036] 1111, V-groove;

[0037] 12. Raised structure;

[0038] 121. Top angle; 122. Inner wall; 123. Top wall; 124. Side wall. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0040] A wall switch is a switch or socket that is fixed to the wall. Take the socket as an example, see Figure 10The socket includes a fixing frame, a functional component and a panel. The bottom box for installing the socket is pre-buried in the wall. The fixing frame includes a fixing frame body and a cover plate. A accommodating cavity is provided inside the fixing frame body. The accommodating cavity is used to accommodate the functional component. The neutral wire and the live wire pass through the bottom box and enter the accommodating cavity. The cover plate covers the opening of the accommodating cavity. The fixing frame body is fixedly connected to the bottom box by screws. The panel has a socket for the electrical plug to be inserted. The electrical plug passes through the socket and the cover plate in sequence and contacts the functional component to be powered on. In the related art, a gasket is usually provided in the fixing frame body to reduce the downward pressure of the screw on the fixing frame body, thereby reducing the deformation of the fixing frame body. However, referring to CN115413167A, the friction coefficient between the gasket and the screw head is currently small, and the contact position between the gasket and the screw head is close to the axis of the screw. The effective support diameter of the support surface to the screw head is small, which results in the limited effect of the gasket in reducing the deformation of the fixing frame.

[0041] Before introducing the technical solution provided by the embodiment of the present disclosure, the principle of reducing the downward pressure on the fixing frame caused by screwing is first introduced: when using a screw gun to tighten the screw, the total torque applied by the screw gun to the screw is constant, and the total torque is respectively proportional to the support force F of the support surface on the screw head. P , friction coefficient between the support surface and the screw head μ n , and the effective support diameter d of the support surface facing the screw head n The above F P The vertical force component is the downward force exerted by the screw on the fixing frame. Therefore, the above μ n and / or d n To reduce F P This reduces the downward pressure of the screw on the fixing frame.

[0042] The present disclosure provides a gasket 100, such as Figure 1 As shown, the gasket 100 is an annular structure, and one surface of the gasket 100 has a slope structure 11 and / or a plurality of protruding structures 12 .

[0043] Among them, see Figure 3 ( Figure 3 for Figure 2 The sloped structure 11 is located at the outer edge of the gasket 100, and the inclined surface 111 of the sloped structure 11 faces the center line 103 of the gasket 100, and the inclined surface 111 is used to contact the outer edge of the screw head.

[0044] The plurality of raised structures 12 are respectively located on the inner edge of the gasket 100 and are circumferentially spaced around the center line 103. Figure 3The inner wall surface 122 of the protruding structure 12 close to the center line 103 is flush with the inner side wall 102 of the gasket 100, and the protruding structure 12 is used to penetrate the screw head.

[0045] By adopting the technical solution provided by the embodiment of the present disclosure, on the one hand, the slope structure 11 is used to contact the outer edge of the screw head, which makes the gasket 100 contact the outermost side of the screw head, that is, increases the effective support diameter d of the gasket on the screw head. n , thus reducing the support force F of the washer on the screw head P Moreover, since the slope structure 11 contacts the screw head through the inclined surface 111, that is, F P The component force in the vertical direction is equal to the downward pressure of the screw head on the gasket, which further reduces the downward pressure of the screw head on the gasket.

[0046] On the other hand, the protruding structure 12 is used to penetrate the screw head. During the screwing process, the protruding structure 12 can shear the screw surface, thereby increasing the friction coefficient μ between the gasket and the screw head. n , thus reducing the support force F of the washer on the screw head P , which reduces the downward pressure of the screw head on the fixing frame. At the same time, because the inner wall surface 122 of the protrusion structure 12 near the center line 103 is flush with the inner side wall 102 of the washer 100, if the washer 100 is squeezed in the axial direction and deformed during the screw tightening process, the washer 100 can be prevented from deforming in the radial direction and contacting the screw shaft.

[0047] In some possible embodiments, the gasket 100 has a sloped structure 11 .

[0048] See also Figure 5 The sloped structure 11 has a relative inclined surface 111 and an outer wall surface 112 , wherein the inclined surface 111 is a wall surface close to the center line 103 , and the inclined surface 111 faces the center line 103 of the gasket 100 , and the outer wall surface 112 is a wall surface away from the center line 103 .

[0049] In some examples, the angle between the inclined surface 111 and the center line 103 is within the interval of [30°, 60°].

[0050] like Figure 9 As shown, the outer edge of the screw head contacts the inclined surface, and the effective support diameter of the washer 100 on the screw head is d n2 Taking a 4mm screw as an example, the effective support diameter d of the screw head by the washer 100 is n2 The diameter of the screw head is about 6.5 mm. In the related art, the screw head directly contacts the bottom wall of the countersunk hole or the cylindrical gasket on the fixing part, and the contact surface is perpendicular to the axis of the screw. The effective support diameter of the contact surface on the screw head is dn1 , the effective support diameter d of the bottom wall of the countersunk hole for the screw head n1 About 5.4mm.

[0051] Specifically, refer to the screw torque calculation formula:

[0052] Furthermore, the support force of the washer 100 with the slope structure 11 on the screw head is recorded as F P2 , the supporting force of the gasket without slope structure on the screw head in the related art is recorded as F P1 .

[0053] Where, T is the torque when tightening the screw, in N·m; F P is the supporting force of the screw on the support surface, in N; d2 is the effective diameter of the threaded part, in mm; d n is the effective support diameter of the screw on the support surface, in mm; μ is the friction coefficient of the threaded part; μ n is the friction coefficient between the support surface and the screw head; α is the thread half angle; β is the thread lead angle.

[0054] For example, μ and μ n are all 0.15, α=30°, β=3.17°, and the screw is a 4mm screw. Substituting the relevant data into the screw torque calculation formula, it can be calculated that F P2 =0.91F P1 .

[0055] Further, see Figure 9 The angle between the inclined surface 111 and the center line 103 is γ, and the support force of the inclined surface 111 on the outer edge of the screw head is F P2 The radial extrusion force of the inclined surface 111 on the outer edge of the screw head is F r2 The axial extrusion force of the inclined surface 111 on the outer edge of the screw head is F f2 , the above F P2 、F r2 and F f2 Satisfy the formula: F f2 =F p2 × sinγ,F r2 =F p2 ×cosγ.

[0056] For example, taking γ as 50°, it can be calculated that F f2 =F p2 × sinγ=0.91F P1 × sin50°=0.697F P1 .

[0057] It is easy to understand that in the related art, the support force of the bottom wall of the countersunk hole or the gasket on the screw head is parallel to the axial direction of the screw. At this time, the downward pressure of the screw on the gasket is equal to the support force of the gasket on the screw, that is, F f1 =F P1 (F f1 is the downward pressure of the screw head on the bottom wall of the countersunk hole or the gasket), and through the above calculation, it can be seen that F f2 =0.697F P1 That is, by using the gasket 100 shown in the present disclosure, the downward pressure of the screw head on the fixing piece can be reduced to about 70% of the original pressure, thereby reducing the downward pressure and reducing the deformation of the fixing piece.

[0058] The specific value of the angle between the inclined surface 111 and the center line 103 is not specifically limited in the embodiment of the present disclosure, and technicians can set it according to actual needs. It is not difficult to understand that as the angle γ decreases, F f2 The value will be further reduced.

[0059] In some examples, the slope structure 11 is an annular slope structure.

[0060] like Figure 4 As shown, the gasket 100 has an annular structure, and the slope structure 11 is an annular slope structure. The shape and size of the annular slope structure are respectively adapted to the shape and size of the gasket 100 and is coaxial with the gasket 100 .

[0061] In one example, gasket 100 is runway-shaped, i.e., it has an annular structure with two arc-shaped structures at each end and two parallel strip-shaped structures in the middle, with each strip-shaped structure connected to one end of an arc-shaped structure. Accordingly, sloped structure 11 is runway-shaped and is located on the top wall of the annular structure.

[0062] In this way, the gasket 100 is set in a runway shape, and by providing a countersunk hole of a reasonable size on the fixing piece, the gasket 100 can be limited circumferentially, thereby preventing the gasket 100 from rotating with the screw during the screwing process.

[0063] In one example, the included angles between the inclined surfaces 111 of the sloped structure 11 and the center line 103 are all the same.

[0064] In this way, the screw head can be prevented from tilting when the inclined surface 111 supports the screw head.

[0065] For example, the sloped structure 11 can be formed by a cutting process or a stamping process. The embodiment of the present disclosure does not limit the forming process of the sloped structure 11.

[0066] Exemplarily, the gasket 100 may be made of various materials with good mechanical properties, such as copper, steel, etc. The embodiment of the present disclosure does not limit the molding material of the gasket 100.

[0067] In one example, the outer wall surface 112 of the sloped structure 11 is flush with the outer side wall 101 of the gasket 100 .

[0068] The outer wall surface 112 is the wall surface of the sloped structure 11 away from the center line 103 .

[0069] like Figure 5 As shown ( Figure 5 , which is a half-section schematic diagram of the gasket 100 , the intersection line between the outer wall surface 112 of the sloped structure 11 and the cross section and the intersection line between the outer side wall 101 of the gasket 100 and the cross section are located in the same plane.

[0070] In this way, the difficulty of forming the sloped structure 11 can be reduced.

[0071] In one example, a chamfered structure 113 is provided between the outer wall surface 112 of the sloped structure 11 and the inclined surface 111 .

[0072] See also Figure 4 A chamfered structure 113 is provided at a transition position between the outer wall surface 112 of the sloped structure 11 and the inclined surface 111. The chamfered structure 113 may be a square chamfer or a circular chamfer, which is not limited in the embodiment of the present disclosure.

[0073] In this way, the transition between the outer wall surface 112 of the sloped structure 11 and the inclined surface 111 can be prevented from being too sharp, thereby improving the safety of use.

[0074] In some examples, the gasket 100 has two slope structures 11 , and the two slope structures 11 are distributed on both sides of the center line 103 .

[0075] See also Figure 6 The gasket 100 is in a runway shape, that is, the gasket 100 has a ring structure with arc structures at both ends and two parallel strip structures in the middle. The two ends of each strip structure are connected to one end of an arc structure. Each slope structure is located on a corresponding strip structure.

[0076] Specifically, the gasket 100 has a neutral plane, the center line 103 is located in the neutral plane, the ring shape of the gasket 100 is symmetrical about the neutral plane, and the two slope structures 11 are symmetrically distributed about the neutral plane.

[0077] In this way, it can be ensured that when the screw head contacts the two slope-shaped structures 11 respectively, the axis of the screw is coaxial with the axis of the gasket 100 .

[0078] Optionally, the inclined surface 111 of the sloped structure 11 may have a V-shaped groove 1111 , and the V-shaped groove 1111 is used to limit the screw head.

[0079] like Figure 6 As shown, the gasket 100 has two sloped structures 11, which are located on either side of the centerline 103. The inclined surface 111 of each sloped structure 11 has a V-shaped groove 1111, and the V-shaped groove 1111 has two oppositely arranged walls. The two opposite groove walls of the V-shaped groove 1111 are respectively used to contact the outer edge of the screw head.

[0080] In this way, by providing the V-shaped groove 1111 , the screw head can be prevented from sliding on the inclined surface 111 .

[0081] For example, the angle between the groove wall of the V-shaped groove 1111 and the inclined surface 111 may be within the range of [150°, 170°].

[0082] Optionally, the sloped structure 11 and the annular structure of the gasket 100 can be formed in separate steps.

[0083] See also Figure 6 The gasket 100 is runway-shaped, i.e., it has a ring-shaped structure with two arc-shaped structures at each end and two parallel strip-shaped structures in the middle. Each strip-shaped structure has two ends connected to one end of an arc-shaped structure. The two strip-shaped structures have a clearing area on the side away from the centerline 103. The two sloped structures 11 are both prismatic structures, each of which is positioned within a corresponding clearing area. The sloped surface 111 of the sloped structure 11 faces the centerline 103 and protrudes beyond the clearing area.

[0084] In this way, the difficulty of forming the sloped structure 11 can be reduced.

[0085] In practice, the annular structure of the gasket 100 can be adapted to the size of the countersunk hole on the fixing member, and a limiting cavity can be formed between the air-avoiding area and the inner wall of the countersunk hole, and the sloped structure 11 can be placed in the limiting cavity.

[0086] In some possible embodiments, the gasket 100 has a protruding structure 12 .

[0087] See also Figure 7 The gasket 100 is an annular structure having a plurality of raised structures 12. The plurality of raised structures 12 are respectively located on the inner edge of the gasket 100 and are circumferentially spaced around the center line 103 of the gasket 100. The raised structures 12 are used to penetrate the screw head to increase the friction coefficient μ between the support surface and the screw head. n .

[0088] In some examples, the protruding structure 12 is a cone-shaped structure, and the top angle of the cone-shaped structure is used to penetrate the screw head.

[0089] Furthermore, the tapered structure may be a circular cone structure, and the axis of the circular cone structure is parallel to the center line 103 of the gasket 100 .

[0090] In some examples, the protruding structure 12 is a prism-shaped structure, and the top corner of the prism-shaped structure is used to penetrate the screw head.

[0091] See also Figure 7 The protruding structure 12 has an inner wall surface 122 , a top wall 123 and two side walls 124 .

[0092] The inner wall surface 122 is a wall surface close to the center line 103 , the top wall 123 is a wall surface away from the center line 103 , and the two side walls 124 are walls connecting the inner wall surface 122 and the top wall 123 .

[0093] Specifically, one end of the top wall 123 starts from the surface of the gasket 100 where the protruding structure 12 is located, and the other end protrudes relative to the gasket 100. The other end of the top wall 123 is connected to the inner wall surface 122, and the angle between the inner wall surface 122 and the top wall 123 is an acute angle.

[0094] In one example, Figure 7 As shown, a plurality of protrusion structures 12 are circumferentially spaced around the center line 103 of the gasket 100 , and the top of each protrusion structure 12 has a vertex 121 near the adjacent protrusion structure 12 , which is used to penetrate the screw head.

[0095] Furthermore, the top of each protruding structure 12 has a vertex 121 near the adjacent protruding structure 12, that is, each protruding structure 12 has a vertex 121 on both sides in the circumferential direction, and the vertex on both sides of each protruding structure 12 can be used to penetrate the screw head.

[0096] In this way, for both forward-threading screws and reverse-threading screws, the protruding structure 12 on the gasket 100 can effectively penetrate into the screw head, thereby improving the versatility of the gasket 100 .

[0097] Optionally, in this example, for the vertex 121, the angle between any two edges forming the vertex 121 is no greater than 90°. Figure 7 The raised structure 12 is a prismatic structure. Each vertex 121 of the raised structure 12 is formed by three intersecting edges. Among the three edges, the angle between any two edges is not greater than 90°.

[0098] In this way, the top angle 121 can be made sharper and easier to penetrate into the screw head.

[0099] In one example, each protruding structure 12 has a vertex 121 on one side in the circumferential direction near an adjacent protruding structure 12. In this way, the gasket 100 can be adapted to either a forward-screw or a reverse-screw.

[0100] In one example, the inner wall surface 122 of the protruding structure 12 is flush with the inner sidewall 102 of the gasket 100 .

[0101] The inner wall surface 122 is the wall surface of the protruding structure 12 close to the center line 103 .

[0102] like Figure 8 As shown ( Figure 8 , which is a half-section schematic diagram of the gasket 100 , the intersection line between the inner wall surface 122 of the protruding structure 12 and the cross section and the intersection line between the inner side wall 102 of the gasket 100 and the cross section are located in the same plane.

[0103] This, on the one hand, can reduce the difficulty of forming the protruding structure 12. On the other hand, during the screwing process, the washer 100 is squeezed in the axial direction and deformed. By arranging the inner wall surface 122 of the protruding structure 12 to be flush with the inner sidewall 102 of the washer 100, a larger space can be reserved at the position of the inner sidewall 102 of the washer 100, thereby preventing the washer 100 from deforming in the radial direction and contacting the screw shank, thereby preventing the washer from locking the screw shank.

[0104] In some examples, the plurality of raised structures 12 are located on the inner edge of the gasket 100 and are evenly spaced apart circumferentially around the centerline 103 .

[0105] See also Figure 7 There is a gap between two adjacent protrusion structures 12, and the width of the gap between each two adjacent protrusion structures 12 can be equal.

[0106] In this way, the difficulty of forming the protruding structure 12 can be reduced.

[0107] According to experimental data, when the gasket provided by the embodiment of the present disclosure is used, when the torque is 0.8 N·m, the deformation of the fixing frame in the vertical direction is 1.6 mm. For the technical solution without the gasket, the deformation of the fixing frame in the vertical direction is 2.5 mm. That is, when the torque is 0.8 N·m, the gasket provided by the embodiment of the present disclosure can reduce the deformation of the fixing frame by approximately 36%.

[0108] In some possible embodiments, the gasket 100 has a slope structure 11 and a protruding structure 12. Figure 1 As shown, the sloped structure 11 and the plurality of protruding structures 12 are located on the same surface of the gasket 100 , which may be the top surface of the gasket 100 .

[0109] Regarding the specific structures of the slope structure 11 and the protruding structure 12 , please refer to the above introduction and will not be repeated here.

[0110] The technical solutions provided by the embodiments of the present disclosure include at least the following beneficial effects:

[0111] The present disclosure provides a gasket 100, which is an annular structure. One surface of the gasket 100 has a sloped structure 11 and / or a plurality of raised structures 12. The sloped structure 11 is located at the outer edge of the gasket 100, and the inclined surface 111 of the sloped structure 11 faces the center line 103 of the gasket 100. The inclined surface 111 is used to contact the outer edge of the screw head. The plurality of raised structures 12 are respectively located at the inner edge of the gasket 100 and are circumferentially spaced around the center line 103. The inner wall surface 122 of the raised structure 12 close to the center line 103 is flush with the inner side wall 102 of the gasket 100. The raised structure 12 is used to penetrate the screw head. In this way, the sloped structure 11 is used to contact the outer edge of the screw head, which makes the gasket 100 contact the outermost side of the screw head, thereby increasing the effective support diameter d of the gasket for the screw head. n , thus reducing the support force F of the washer on the screw head P Moreover, since the slope structure 11 contacts the screw head through the inclined surface 111, that is, F P The vertical force component is equal to the downward pressure of the screw head on the gasket, which further reduces the downward pressure of the screw head on the gasket. The raised structure 12 is used to penetrate the screw head. During the screwing process, the raised structure 12 can shear the screw surface, which can increase the friction coefficient μ between the gasket and the screw head. n , thus reducing the support force F of the washer on the screw head P , which reduces the downward pressure of the screw head on the fixing frame. At the same time, because the inner wall surface 122 of the protrusion structure 12 near the center line 103 is flush with the inner side wall 102 of the washer 100, if the washer 100 is squeezed in the axial direction and deformed during the screw tightening process, the washer 100 can be prevented from deforming in the radial direction and contacting the screw shaft.

[0112] An embodiment of the present disclosure provides a fixing bracket for fixing a switch or a socket to a mounting surface. The fixing bracket includes the above-mentioned gasket 100 .

[0113] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A gasket (100), characterized in that: The gasket (100) is an annular structure, and one surface of the gasket (100) has a slope structure (11) and / or a plurality of protruding structures (12); The sloped structure (11) is located at the outer edge of the gasket (100), the inclined surface (111) of the sloped structure (11) faces the center line (103) of the gasket (100), and the inclined surface (111) is used to contact the outer edge of the screw head; The plurality of raised structures (12) are respectively located on the inner edge of the gasket (100) and are circumferentially spaced around the center line (103); the inner wall surface (122) of the raised structure (12) close to the center line (103) is flush with the inner side wall (102) of the gasket (100); and the raised structure (12) is used to penetrate the screw head.

2. The gasket (100) according to claim 1, characterized in that The sloped structure (11) is an annular sloped structure and is coaxial with the gasket (100).

3. The gasket (100) according to claim 2, characterized in that The outer wall surface (112) of the sloped structure (11) facing away from the center line (103) is flush with the outer side wall (101) of the gasket (100).

4. The gasket (100) according to claim 1, characterized in that The gasket (100) has two slope-shaped structures (11), and the two slope-shaped structures (11) are located on both sides of the center line (103).

5. The gasket (100) according to claim 4, characterized in that The inclined surface (111) of each slope-shaped structure (11) has a V-shaped groove (1111), and two opposite groove walls in the V-shaped groove (1111) are respectively used to contact the outer edge of the screw head.

6. The gasket (100) according to claim 1, characterized in that The angle between the inclined surface (111) and the center line (103) is within the range of [30°, 60°].

7. The gasket (100) according to claim 1, characterized in that The top of each protruding structure (12) is provided with a top corner (121) at a position close to the adjacent protruding structure (12), and the top corner (121) is used for piercing the screw head.

8. The gasket (100) according to claim 7, characterized in that The included angle between any two edges forming the vertex (121) is no greater than 90°.

9. The gasket (100) according to claim 1, characterized in that The plurality of protruding structures (12) are evenly distributed.

10. A fixing bracket for fixing a switch or socket to a mounting surface, characterized in that: The fixing frame comprises a gasket (100) according to any one of claims 1 to 9.

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