Novel multi-lug lock washer and using method thereof

Abstract

The invention discloses a novel multi-lug lock washer and a using method thereof.The lock washer comprises a fastening lug and a plurality of lock lugs, the fastening lug is bent by 90 degrees perpendicular to the plane of a washer body, and the lock lugs are slightly bent in the direction opposite to the bending direction of the fastening lug. Compared with the prior art, the invention has the following positive effects: 1, the angle requirement of the bolt head relative to the lock washer is reduced; the novel multi-lug lock washer is provided with a plurality of locking lugs, the requirement for the angle of a bolt head relative to the lock washer is low when a bolt is installed, and the proper locking lugs can be always used for bending and locking. 2, the reuse rate is improved; the multi-lug lock washer can be mounted and dismounted for more times. 3, the installation process is simplified, and the installation efficiency is improved. The long end of the novel multi-lug lock washer is pre-bent to 90 degrees according to the actual installation size before installation and does not need to be bent during installation; after the bolt is installed in place, the locking lug is easily bent and tightly attached to the side face of the bolt head to prevent looseness.

Description

Technical Field

[0001] The invention relates to a novel multi-ear stop washer for preventing bolts from loosening, which solves the problem of bolt loosening in a position requiring maintenance. Background Art

[0002] GB855 specifies a double-ear stop washer, which is widely used in threaded fastener connections with high anti-loosening requirements. The anti-loosening principle of the double-ear stop washer is mechanical anti-loosening. The installation process is to bend one end to fit tightly against one side of the positioning block, and bend the other end to fit tightly against the opposite side of the bolt head. After the double-ear stop washer is installed, when the bolt tends to loosen, the washer will limit the bolt from rotating, thereby playing a role in stopping and preventing loosening.

[0003] There are two disadvantages of double-ear retaining washers: 1. When the bolt head is a hexagonal head, after pre-tightening, the washer will not be able to fit tightly against the opposite side if one ear is facing the washer diagonally, and it will not be able to prevent loosening. 2. As the number of installation and disassembly of the washer increases, obvious metal fatigue will occur, and the anti-loosening effect will decrease. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention proposes a novel multi-ear stop washer and a method of using the same, aiming to solve the problem of loose bolts in the parts requiring inspection (requiring multiple installation and disassembly) during the installation and use of the existing double-ear stop washers.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a new type of multi-ear stop washer, including a fastening ear and multiple stop ears, wherein the fastening ear is bent 90° perpendicular to the plane of the washer body, and the stop ear is slightly bent in the opposite direction of the bending direction of the fastening ear.

[0006] The present invention also provides a method for using a novel multi-ear stop washer, comprising the following steps:

[0007] Step 1: Place the multi-ear stop washer on the connector with the stop ears slightly bent upward, and ensure that the inner hole of the multi-ear stop washer is aligned with the through hole of the connector, and ensure that the fastening ears are close to the end face of the connector;

[0008] Step 2: Pass the bolt through the inner hole of the multi-ear retaining washer and place it into the through hole of the connecting piece, then tighten the bolt for pre-tightening.

[0009] Step 3: After pre-tightening, select one or two stop ears on either side of the bolt head, bend them and fit them tightly against the side of the bolt head. The installation is complete.

[0010] Compared with the prior art, the present invention has the following positive effects:

[0011] 1. Reduce the angle requirement of the bolt head relative to the stop washer. The original double-ear stop washer only has one ear in contact with the bolt head. When installing the bolt, the stop ear of the stop washer needs to be as parallel as possible to the opposite side of the bolt head, otherwise the anti-loosening effect will be poor. The new multi-ear stop washer has multiple stop ears. When installing the bolt, the angle requirement of the bolt head relative to the stop washer is low, and there is always a suitable stop ear that can be bent to prevent loosening.

[0012] 2. Improve the reuse rate. The double-ear stop washer has only one stop ear. As the number of installation and removal increases, obvious metal fatigue will occur, so it cannot be used multiple times. The multi-ear stop washer has several stop ears. Only one or two ears are bent for each installation. The remaining stop ears can be bent for the next installation, so it can be installed and removed more times.

[0013] 3. Simplify the installation process and improve installation efficiency. When installing the original double-ear stop washers, both ears need to be bent at the installation site, which is time-consuming. After the bolt is installed, the unbent stop ears will be close to the bolt connection surface, making bending more difficult. The long end of the new multi-ear stop washer has been pre-bent to 90° according to the actual installation size before installation, and does not need to be bent during installation; the stop ears have been slightly bent, and after the bolt is installed, it is easy to bend and close to the side of the bolt head to prevent loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0015] Figure 1 It is a front view of the multi-ear stop washer of the present invention;

[0016] Figure 2 is a side view of a multi-ear stop washer of the present invention;

[0017] Figure 3 It is a schematic diagram of the installation state of the multi-ear stop washer of the present invention;

[0018] The reference numerals in the figure include: a stop ear 1, a fastening ear 2, a connecting piece 3, and a bolt 4. DETAILED DESCRIPTION

[0019] A new type of multi-ear retaining washer, such as Figure 1 and Figure 2 As shown, it includes a stop ear 1 and a fastening ear 2, wherein:

[0020] The stop washer of the present invention has a fastening ear 2, which is pre-bent 90° in the uninstalled state, so that the stop washer does not rotate when the bolt is pre-tightened during installation; there are multiple stop ears 1, which are slightly bent in the opposite direction of the pre-bending direction of the fastening ears, which does not affect the pre-tightening of the bolts and is convenient for bending. If they are not slightly bent, after the bolts are pre-tightened, the multiple stop ears will all be tightly attached to the upper surface of the connecting piece, and are not easy to bend, making installation difficult.

[0021] like Figure 3 As shown, the installation process of the multi-ear stop washer of the present invention is as follows:

[0022] 1) Align the inner hole of the multi-ear stop washer with the through hole of the connector 3, and place the fastening ears 2 against the end surface of the connector 3.

[0023] 2) Insert bolt 4 and pre-tighten it.

[0024] 3) After pre-tightening, select one or two stop ears on either side of the bolt head, bend them and fit them tightly against the side of the bolt head to complete the installation.

[0025] Working principle of the present invention:

[0026] The novel multi-ear stop washer of the present invention has a mechanical anti-loosening principle. During the installation process, the long end is pre-bent to be close to one side of the positioning block, and the multi-ear end can be arbitrarily bent with one ear or two ears to be close to the opposite side of the bolt head. After the multi-ear stop washer is installed, when the bolt has a tendency to loosen, the stop ears of the multi-ear stop washer will limit the rotation of the bolt, thereby playing a role in stopping and preventing loosening.

Claims

1. A novel multi-ear retaining washer, characterized in that: It comprises a fastening ear and a plurality of stopping ears, wherein the fastening ear is bent 90 degrees perpendicular to the plane of the gasket body, and the stopping ear is slightly bent in the opposite direction of the bending direction of the fastening ear.

2. A novel multi-ear retaining washer according to claim 1, characterized in that: The width of the fastening ear is greater than the width of the stopping ear.

3. A novel multi-ear retaining washer according to claim 1, characterized in that: The overall length of the fastening ear is greater than the length of the stopping ear.

4. A novel multi-ear retaining washer according to claim 1, characterized in that: The stop ears are evenly distributed in the circumferential direction of the gasket.

5. A method for using the novel multi-ear retaining washer according to claim 1, characterized in that: The steps include: Step 1: Place the multi-ear stop washer on the connector with the stop ears slightly bent upward, and ensure that the inner hole of the multi-ear stop washer is aligned with the through hole of the connector, and ensure that the fastening ears are close to the end face of the connector; Step 2: Pass the bolt through the inner hole of the multi-ear retaining washer and place it into the through hole of the connecting piece, then tighten the bolt for pre-tightening. Step 3: After pre-tightening, select one or two stop ears on either side of the bolt head, bend them and fit them tightly against the side of the bolt head. The installation is complete.

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