Locking washer with inner sawteeth

Abstract

The utility model relates to the field of locking washers, in particular to an inner sawtooth locking washer which comprises a washer body, a plurality of clamping teeth are evenly arranged on the inner side face of the washer body, each clamping tooth comprises a connecting portion, a bending portion and a contact portion, one end of each bending portion is connected with the corresponding connecting portion, and the other end of each bending portion is connected with the corresponding contact portion. One end of the connecting part is connected with the gasket body, the other end of the connecting part is connected with the contact part, the connecting part is fixedly connected with the gasket body, and the contact part is parallel to the gasket body. Through the arrangement of the clamping teeth, a gap between the bolt and the nut can be clamped through deformation of the clamping teeth, and the contact parts of the clamping teeth abut against threads of the bolt, so that the nut is not prone to loosening; in addition, one end of the contact part is arranged to be arc-shaped, so that resistance borne by the contact part when the contact part is in contact with the bolt is reduced, and abrasion borne by threads of the bolt is less.

Description

Technical Field

[0001] The utility model relates to the field of locking washers, in particular to an internal serrated locking washer. Background Art

[0002] Washers are parts that are placed between the connected parts and nuts. They are usually flat metal rings that are used to prevent the surfaces of the connected parts from being scratched by the nuts. Lock washers can also provide anti-loosening functions to reduce or prevent the nuts from loosening from the bolts due to vibrations. Most of them are achieved through friction between the nuts, so once the vibration is strong and the pressure between the nuts and washers decreases, the anti-loosening effect will be greatly reduced or even fail.

[0003] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an internal serrated locking washer. The utility model is achieved through the following technical solutions:

[0005] An internal serrated locking washer comprises a washer body, a plurality of latching teeth are arranged on the inner side surface of the washer body, and the plurality of latching teeth are evenly arranged, the latching teeth comprise a connecting portion, a bending portion and a contact portion, one end of the bending portion is connected to the connecting portion, and the other end is connected to the contact portion, the connecting portion is fixedly connected to the washer body, and the contact portion is arranged parallel to the washer body.

[0006] In the above technical scheme: the washer body is used to realize the basic stopping and anti-wear functions of the washer; the latch teeth are used to resist the threads of the bolt after deformation, and fill the air gap at the connection position between the bolt and the nut, so that the nut cannot rotate back; the connecting part is used to bend and deform, so that the posture of the latch teeth changes from horizontal to upward; the bending part plays a guiding role, so that the chamfer of the bolt head will first contact the contact part when contacting the latch teeth, so that the bending degree of each latch tooth is similar; the contact part is used to contact the threads of the bolt.

[0007] The utility model is further configured as follows: the thicknesses of the contact portion, the connecting portion and the bending portion are consistent.

[0008] In the above technical solution: the thickness of the contact portion, the connecting portion and the bending portion are consistent, so that each portion is more uniform when bent.

[0009] The utility model is further configured as follows: a side of the contact portion away from the bending portion is in an arc shape.

[0010] In the above technical solution: one side of the contact portion is in an arc shape, which can reduce the wear of the bolt when the contact portion contacts the bolt thread.

[0011] The utility model is further configured as follows: the connecting portion is parallel to the gasket body.

[0012] In the above technical solution: the connecting portion is parallel to the gasket body, so as to avoid scratches between the connecting portion and the product.

[0013] The utility model is further configured as follows: the thickness of the contact portion is smaller than the thickness of the gasket body.

[0014] In the above technical solution: the thickness of the contact portion is smaller than the thickness of the gasket body, so that the latching teeth themselves are easier to bend.

[0015] The utility model is further configured as follows: the bottom surface of the connecting portion is flush with the bottom surface of the gasket body.

[0016] In the above technical solution: the bottom surface of the connecting portion is flush with the bottom surface of the gasket body, so that when bending, the connecting portion is less likely to be disconnected at the connection position of the gasket body.

[0017] The utility model discloses an internal serrated locking washer, compared with the prior art:

[0018] 1. The utility model uses the arrangement of the latch teeth to clamp the gap between the bolt and the nut through the deformation of the latch teeth, and the contact portion of the latch teeth abuts against the thread of the bolt, thereby making it less likely for the nut to loosen; 2. The utility model also uses the arrangement of one end of the contact portion in an arc shape to reduce the resistance encountered when the contact portion contacts the bolt, and to reduce the wear on the thread of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 It is a cross-sectional view of the utility model.

[0022] The corresponding component names represented by the numbers and letters in the figure are: 10-washer body; 20-grip; 201-connecting part; 202-bending part; 203-contact part. DETAILED DESCRIPTION

[0023] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0024] like Figure 1-2 As shown, the utility model proposes an internal serrated locking washer, comprising a washer body 10, a plurality of latch teeth 20 are arranged on the inner side surface of the washer body 10, and the plurality of latch teeth 20 are evenly arranged, the latch teeth 20 include a connecting portion 201, a bending portion 202 and a contact portion 203, one end of the bending portion 202 is connected to the connecting portion 201, and the other end is connected to the contact portion 203, the connecting portion 201 is fixedly connected to the washer body 10, and the contact portion 203 is arranged parallel to the washer body 10. The number of the latch teeth 20 is between 12 and 18, preferably 18; the length of the latch teeth 20 is related to the difference between the inner hole radius of the washer body 10 and the minor diameter of the bolt; the latch teeth 20 and the washer body 10 are integrally cast.

[0025] like Figure 1-2 As shown, in the internal serrated locking washer proposed by the present invention, the contact portion 203, the connecting portion 201 and the bending portion 202 have the same thickness.

[0026] like Figure 1-2 As shown, in the internal serrated locking washer proposed by the present invention, the side of the contact portion 203 away from the bending portion 202 is in an arc shape.

[0027] like Figure 1-2 As shown, in the internal serrated locking washer proposed by the present invention, the connecting portion 201 is parallel to the washer body 10 .

[0028] like Figure 1-2 As shown, in the internal serrated locking washer proposed by the present invention, the thickness of the contact portion 203 is less than the thickness of the washer body 10. The thickness of the contact portion 203 is between 1 / 5 and 1 / 3 of the thickness of the washer body 10.

[0029] like Figure 1-2 As shown, in the internal serrated locking washer proposed by the present invention, the bottom surface of the connecting portion 201 is flush with the bottom surface of the washer body 10 .

[0030] The working principle of the utility model is:

[0031] a) Pass the bolts through the connected parts;

[0032] b) Put the utility model onto the bolt;

[0033] c) The clamping teeth are bent upwards under force, clamping the bolt so that it does not fall;

[0034] d) Tighten the nuts and bolts;

[0035] e) After the nut contacts the latch teeth, the latch teeth are further deformed;

[0036] f) The snap teeth are embedded in the gap between the lower chamfer of the nut and the bolt;

[0037] g) The increase in contact surface increases the friction force, thus achieving a secure connection.

[0038] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, shall make equivalent replacements or changes, which shall be covered by the protection scope of the utility model.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An internal serrated lock washer, characterized in that: The invention comprises a gasket body (10), wherein a plurality of latch teeth (20) are arranged on the inner side surface of the gasket body (10), and the plurality of latch teeth (20) are evenly arranged, wherein the latch teeth (20) comprise a connecting portion (201), a bending portion (202) and a contact portion (203), wherein one end of the bending portion (202) is connected to the connecting portion (201), and the other end is connected to the contact portion (203), wherein the connecting portion (201) is fixedly connected to the gasket body (10), and the contact portion (203) is arranged parallel to the gasket body (10).

2. An internally serrated lock washer according to claim 1, characterized in that: The contact portion (203), the connecting portion (201) and the bending portion (202) have the same thickness.

3. An internally serrated lock washer according to claim 2, characterized in that: The side of the contact portion (203) away from the bending portion (202) is in an arc shape.

4. An internally serrated lock washer according to claim 3, characterized in that: The connecting portion (201) is parallel to the gasket body (10).

5. An internally serrated lock washer according to claim 4, characterized in that: The thickness of the contact portion (203) is smaller than the thickness of the gasket body (10).

6. An internally serrated lock washer according to claim 5, characterized in that: The bottom surface of the connecting portion (201) is flush with the bottom surface of the gasket body (10).

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