Clamping type elastic washer

Abstract

The utility model relates to the field of elastic washers, in particular to a clamping type elastic washer which comprises a washer body, the washer body is spiral and comprises a starting face and an ending face, a clamping groove is further formed in the bottom face of the washer body, the clamping groove is connected with the starting face, and the clamping type elastic washer further comprises a base plate. The gasket body is provided with a clamping groove, the base plate is in an arc shape, one end of the base plate is connected with the clamping groove in a clamped mode, a containing groove is formed in the bottom face of the gasket body, the initial position of the containing groove is located on the end face, and the length of the base plate is the sum of the length of the containing groove and the length of the clamping groove. Through the arrangement of the base plate, the contact area between the elastic washer and the mounting surface is increased, so that the friction force when the elastic washer is not completely tightened is increased, and the elastic washer can be used in a use scene in which the friction force is generated mainly by pressing to transmit power.

Description

Technical Field

[0001] This utility model relates to the field of elastic washers, and in particular to a snap-fit ​​elastic washer. Background Technology

[0002] A washer is a component placed between a connected part and a nut. It is generally a flat metal ring used to protect the surface of the connected part from scratches by the nut and to distribute the pressure of the nut on the connected part. An elastic washer, also known as a spring washer, is a type of washer that is not connected end-to-end and can prevent loosening and increase preload through its own deformation.

[0003] However, because the contact surface between the elastic washer and the mounting surface is not a complete circle, the contact area when not fully tightened is very small. In applications where power transmission relies primarily on friction generated by compression, if the elastic washer experiences reduced force due to rotation or vibration, it may partially regain its shape, causing the contact area between the washer and the mounting surface to abruptly become extremely small, leading to failure. Therefore, it is necessary to improve this structure to overcome these shortcomings. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a snap-fit ​​elastic washer. This utility model is achieved through the following technical solution:

[0005] A snap-fit ​​elastic washer includes a washer body, which is spiral-shaped and includes a starting surface and an ending surface. A slot is provided on the bottom surface of the washer body, and the slot intersects with the starting surface. The washer also includes a pad, which is arc-shaped. One end of the pad engages with the slot. A receiving groove is provided on the bottom surface of the washer body, and the starting position of the receiving groove is located on the ending surface. The length of the pad is the sum of the lengths of the receiving groove and the slot.

[0006] In the above technical solution: the washer body is spiral-shaped to achieve basic functions such as preventing loosening of the elastic washer; the slot is used to install the pad; the pad is used to increase the contact area between the elastic washer and the mounting surface, thereby increasing friction; the receiving groove is used to ensure that the pad and the washer body will not interfere with each other after the washer body is compressed; the length of the pad is the sum of the lengths of the receiving groove and the slot, so that after the washer body returns to its shape, the position of the pad under force is the middle of the washer.

[0007] A further feature of this invention is that the pad includes a base layer and a rubber layer, with the rubber layer fixed to the lower surface of the base layer.

[0008] In the above technical solution: the base layer is used to maintain rigidity so that the pad can maintain contact with the mounting surface; the rubber layer is used to increase the coefficient of friction between the pad and the mounting surface, thereby further increasing the friction force.

[0009] A further feature of this invention is that the slot is L-shaped.

[0010] In the above technical solution: the slot is L-shaped to prevent the pad from separating from the washer body, and can rely on the friction between the pad and the mounting surface to prevent the washer body from rotating.

[0011] A further feature of this invention is that the pad is semi-circular.

[0012] In the above technical solution: the pad is semi-circular, which is used to ensure that the pad can maintain contact with the mounting surface when the foundation is in the foundation position.

[0013] A further feature of this invention is that the cross-sectional shape of the receiving groove is rectangular, and the depth of the receiving groove is not less than the thickness of the pad.

[0014] In the above technical solution: the depth of the receiving groove is not less than the thickness of the pad, so that the pad can be completely inserted into the receiving groove after the gasket body is compressed.

[0015] This utility model discloses a snap-fit ​​elastic washer, which, compared with the prior art:

[0016] 1. By setting a pad, this utility model increases the contact area between the elastic washer and the mounting surface, thereby increasing the frictional force when not fully tightened, making it suitable for application scenarios where power is transmitted mainly by frictional force generated by pressing.

[0017] 2. This utility model further increases friction by increasing the coefficient of friction through the setting of a base layer and a rubber layer. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a perspective view of the present invention from another angle;

[0020] Figure 3 This is a bottom view of the present invention;

[0021] Figure 4 This is a bottom view of the washer body of this utility model.

[0022] The numbers and letters in the diagram represent the following component names: 10-Washer body; 101-Starting surface; 102-Ending surface; 103-Slot; 104-Accommodation slot; 20-Plate; 201-Base layer; 202-Rubber layer. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0024] like Figure 1-4 As shown, the present invention proposes a snap-fit ​​elastic washer, comprising a washer body 10, which is spiral in shape and includes a starting surface 101 and an ending surface 102. A slot 103 is also provided on the bottom surface of the washer body 10, and the slot 103 intersects with the starting surface 101. The washer body 10 also includes a pad 20, which is arc-shaped. One end of the pad 20 is snapped into the slot 103. A receiving groove 104 is also provided on the bottom surface of the washer body 10, and the starting position of the receiving groove 104 is located on the ending surface 102. The length of the pad 20 is the sum of the lengths of the receiving groove 104 and the slot 103. The number of spiral turns of the gasket body 10 is one; the pad 20 and the slot 103 can also be more firmly fixed by adhesive bonding; the receiving groove 104 intersects with the inner side of the gasket body 10, so that the receiving groove 104 is open on both sides.

[0025] like Figure 1-4 As shown, this utility model proposes a snap-fit ​​elastic washer, wherein the pad 20 includes a base layer 201 and a rubber layer 202, and the rubber layer 202 is fixed to the lower surface of the base layer 201. The base layer 201 and the rubber layer 202 have the same shape; the inner diameter of the pad 20 is the same as the inner diameter of the washer body 10, and the outer diameter of the pad 20 is the same as the outer diameter of the receiving groove 104.

[0026] like Figure 1-4 As shown, the present invention proposes a snap-fit ​​elastic washer, wherein the snap-fit ​​groove 103 is L-shaped.

[0027] like Figure 1-4 As shown, this utility model proposes a snap-fit ​​elastic washer, wherein the washer plate 20 is semi-circular. The central angle of the washer plate 20 can also be greater than 180 degrees.

[0028] like Figure 1-4As shown, this utility model proposes a snap-fit ​​elastic washer, wherein the receiving groove 104 has a rectangular cross-sectional shape, and the depth of the receiving groove 104 is not less than the thickness of the pad 20. Preferably, the thickness of the pad 20 does not have to be uniform; the thickness of the rubber layer 202 that mates with the receiving groove 104 can be increased to ensure full contact with the mounting surface.

[0029] The working principle of this utility model is as follows:

[0030] a) Secure the washer body to the mounting surface using bolts or nuts;

[0031] b) The washer body is compressed, and the washer plate is located in the receiving groove;

[0032] c) At this point, the contact area between the washer body and the mounting surface is relatively large;

[0033] d) When the fixing bolts become loose due to vibration caused by rotation, etc.;

[0034] e) The washer body releases its elastic potential energy and partially restores its shape. At this time, the washer body can still provide preload to the bolt; f) The partial restoration of the washer body causes the contact area between the washer body and the mounting surface to be almost zero, but the elastic force of the washer body is transmitted to the pad through the groove at the starting surface, providing downward pressure to the pad.

[0035] g) At this point, the pad contacts the mounting surface, providing friction to prevent the washer body from rotating and causing the bolts to loosen further.

[0036] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A card mountable elastomeric gasket characterized by: The gasket body (10) is helical, and comprises a starting face (101) and an ending face (102), and a clamping groove (103) is further arranged on the bottom face of the gasket body (10) and is in junction with the starting face (101), and the gasket body (10) further comprises a gasket plate (20) which is circular arc-shaped, one end of the gasket plate (20) is clamped with the clamping groove (103), and a containing groove (104) is further arranged on the bottom face of the gasket body (10), and the starting position of the containing groove (104) is on the ending face (102), and the length of the gasket plate (20) is the sum of the length of the containing groove (104) and the length of the clamping groove (103).

2. A clamping type elastic washer according to claim 1, wherein: The gasket plate (20) comprises a base layer (201) and a rubber layer (202), and the rubber layer (202) is fixed on the lower surface of the base layer (201).

3. The elastic gasket of claim 1, wherein: The clamping groove (103) is "L" shaped.

4. The clamping type elastic washer according to claim 1, wherein: The gasket plate (20) is semi-circular ring-shaped.

5. The clamping elastic washer of claim 1, wherein: The cross section of the containing groove (104) is rectangular, and the depth of the containing groove (104) is not less than the thickness of the gasket plate (20).

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