Sawtooth spring washer

Abstract

The utility model discloses a sawtooth spring washer which comprises a spring washer body, sawteeth are arranged on the front face and / or the back face of the spring washer body, the locking angle of the sawteeth of the spring washer body before installation is angle a, the locking angle of the sawteeth of the spring washer body after installation is angle b, the angle a is smaller than the angle b, and the loosening torque of the spring washer is larger than the installation torque. According to the technical scheme, the elastic gasket body is flattened after being installed, at the moment, the angle a is smaller than the angle b, the installation angle is smaller than the loosening angle, and the loosening torque is larger than the installation torque. The elastic gasket is reasonable in structural design and simple in structure, the clockwise sawteeth or the anticlockwise sawteeth play an anti-loosening role, the front face and the back face of the elastic gasket body can be locked simultaneously through the clockwise sawteeth or the anticlockwise sawteeth, the loosening torque is larger than the installation torque, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of elastic washers, in particular to a serrated elastic washer. Background Art

[0002] Washers are parts between connectors and nuts. They are generally flat metal rings used to protect the surface of the connected parts from being scratched by the nut and to disperse the pressure of the nut on the connected parts. There are also rubber elastic washers that are used to position the parts relative to rotation and relative sliding. They are widely used in various threaded connections.

[0003] The existing double-nut structure: Although it has good anti-loosening performance, it is expensive and slow to install. The double-tooth washer structure: It is difficult to process and requires other products to fix the gasket sequence (such as glue). The threaded nut: Generally composed of a nut and a locking washer, although it has a simple structure and good anti-loosening performance, it also requires high installation torque.

[0004] The mainstream anti-loosening fasteners on the current market, whether listed above or not, all have a common problem: the loosening torque is less than or equal to the installation torque. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a serrated spring washer with reasonable structural design, simple structure, the front and back sides can be locked at the same time, the loosening torque is greater than the installation torque and the practicality is good.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a serrated spring washer, comprising an elastic gasket body, wherein the front and / or back surfaces of the elastic gasket are provided with serrations, the serration locking angle of the elastic gasket body before installation is ∠a, and the serration locking angle of the elastic gasket body after installation is ∠b, ∠a is less than ∠b, and the loosening torque of the elastic gasket is greater than the installation torque.

[0007] The utility model is further configured as follows: the front and back surfaces of the elastic gasket body are both fixedly provided with clockwise serrations distributed in an annular array.

[0008] The present invention is further configured such that: the front and back surfaces of the elastic gasket body are both fixedly provided with inverse serrations distributed in a ring array.

[0009] The present invention is further configured as follows: the elastic gasket body is made of metal, plastic or nylon, and an opening is provided at a local position of the elastic gasket body.

[0010] The present invention is further configured such that: the sawtooth locking angle ∠a before the elastic gasket body is installed is 75-85°, and the sawtooth locking angle ∠b after the elastic gasket body is installed is 90-100°.

[0011] The beneficial effects of the present invention are: compared with the prior art, the present invention has a reasonable structural design. After installation, the elastic gasket body is flattened. At this time, ∠a is smaller than ∠b, and the installation angle is smaller than the release angle, so the release torque is greater than the installation torque. The structure is simple, the clockwise or counter-clockwise serrations provide a loosening prevention function, and the front and back surfaces of the elastic gasket body 1 can be locked simultaneously by the clockwise or counter-clockwise serrations. The release torque is greater than the installation torque, and the practicality is excellent.

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0014] Figure 2 This is a schematic structural diagram of the front side of the first embodiment of the present utility model;

[0015] Figure 3 This is a schematic structural diagram of the reverse side of the first embodiment of the present utility model;

[0016] Figure 4 This is a schematic diagram of the sawtooth locking angle before installation of the first embodiment of the present utility model;

[0017] Figure 5 This is a schematic diagram of the sawtooth locking angle after installation of the first embodiment of the present utility model;

[0018] Figure 6 This is a schematic diagram of the assembly of the first embodiment of the present invention with existing components before installation;

[0019] Figure 7 This is a schematic diagram of the assembly of the first embodiment of the present utility model with existing components after installation;

[0020] Figure 8 for Figure 7 An enlarged schematic diagram of the middle part I;

[0021] Figure 9 This is a schematic structural diagram of the second embodiment of the present utility model;

[0022] Figure 10 This is a schematic structural diagram of the front side of the second embodiment of the present utility model;

[0023] Figure 11 This is a schematic structural diagram of the reverse side of the second embodiment of the present utility model;

[0024] Figure 12 This is a schematic diagram of the sawtooth locking angle before installation of the second embodiment of the present utility model;

[0025] Figure 13This is a schematic diagram of the sawtooth locking angle after installation of the second embodiment of the present utility model;

[0026] Figure 14 This is a schematic diagram of the assembly of the second embodiment of the present utility model with existing components before installation;

[0027] Figure 15 This is a schematic diagram of the assembly of the second embodiment of the utility model with existing components after installation;

[0028] Figure 16 for Figure 7 Enlarged schematic diagram of part II. DETAILED DESCRIPTION

[0029] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear" and the like are used to indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0030] Example 1

[0031] See also Figures 1 to 8 The utility model discloses a serrated spring washer, comprising an elastic gasket body 1, wherein serrations 11 are provided on the front and / or back surface of the elastic gasket 1, wherein the serration locking angle of the elastic gasket body 1 before installation is ∠a, and the serration locking angle of the elastic gasket body 1 after installation is ∠b, ∠a is smaller than ∠b, and the loosening torque of the elastic gasket 1 is greater than the installation torque.

[0032] Preferably, the elastic angular force of the elastic gasket body 1 is F, and under the action of the elastic angular force, the loosening torque of the elastic gasket 1 is greater than the installation torque.

[0033] To make the structural design of the embodiment of the present invention more reasonable, it is preferred that the front and back surfaces of the elastic gasket body 1 of this embodiment are fixedly provided with clockwise serrations in an annular array. That is, the serrations 11 are arranged in a clockwise direction, the number of serrations 11 is 3 or more, and the serrations 11 are all integrally provided with the elastic gasket 1.

[0034] The elastic gasket body 1 is made of metal, plastic or nylon, and an opening 12 is provided at a local position of the elastic gasket body 1 .

[0035] The serration locking angle ∠a of the elastic gasket body 1 before installation is 75-85°, and the serration locking angle ∠b of the elastic gasket body 1 after installation is 90-100°.

[0036] In actual application, the elastic gasket body 1 is flattened after installation. At this time, ∠a is smaller than ∠b, and the installation angle is smaller than the loosening angle, so the loosening torque is greater than the installation torque.

[0037] After the elastic gasket body 1 is installed, it is subjected to forces at four angles, such as Figure 8 As shown, F1 is the front elastic angular retaining force; F2 is the rear elastic angular retaining force; F3 is the front serration retaining force; and F4 is the rear serration retaining force. The structural design is rational and simple, and the clockwise serrations provide a preventive action. Furthermore, the clockwise serrations simultaneously tighten the front and rear sides of the elastic gasket body 1, ensuring greater release torque than installation torque and providing excellent practicality.

[0038] Example 2

[0039] See also Figures 9 to 16 The second embodiment is an improvement based on the first embodiment. The difference between the second embodiment and the first embodiment is that the front and back surfaces of the elastic gasket body 1 are both fixedly provided with inverse serrations distributed in a circular array.

[0040] In actual application, the reverse serrations play an anti-loosening role. The elastic gasket body 1 is flattened after installation. At this time, ∠a is smaller than ∠b, the installation angle is smaller than the loosening angle, and the front and back sides of the elastic gasket body 1 can be locked at the same time through the reverse serrations. The loosening torque is greater than the installation torque and the practicality is good.

[0041] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A serrated spring washer, comprising an elastic washer body (1), characterized in that: The front and / or back surfaces of the elastic gasket (1) are provided with serrations (11), the serration locking angle before the elastic gasket body (1) is installed is ∠a, and the serration locking angle after the elastic gasket body (1) is installed is ∠b, ∠a is smaller than ∠b, and the loosening torque of the elastic gasket (1) is greater than the installation torque.

2. The serrated spring washer according to claim 1, characterized in that: The front and back surfaces of the elastic gasket body (1) are both distributed and fixedly provided with clockwise serrations in a circular array.

3. The serrated spring washer according to claim 1, characterized in that: The front and back surfaces of the elastic gasket body (1) are both fixedly provided with inverse serrations distributed in a ring array.

4. A serrated spring washer according to claim 2 or 3, characterized in that: The elastic gasket body (1) is made of metal, plastic or nylon, and an opening (12) is provided at a local position of the elastic gasket body (1).

5. The serrated spring washer according to claim 2 or 3, characterized in that: The sawtooth locking angle ∠a of the elastic gasket body (1) before installation is 75-85°, and the sawtooth locking angle ∠b of the elastic gasket body (1) after installation is 90-100°.

Images