Novel multi-lug lock washer

Abstract

The utility model discloses a novel multi-lug lock washer which 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 utility model has the positive effects that: 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 appropriate locking lugs can be always used for bending and locking. 2, the reuse rate is improved; the multi-lug lock washer disclosed by the utility model 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 utility model relates to a new type of multi-ear stop washer for bolt anti-loosening, which solves the problem of bolt loosening of the current maintenance part. BACKGROUND

[0002] GB855 provides a double-ear stop washer, which is widely used in the connection of threaded fasteners with high anti-loosening requirements. The anti-loosening principle of the double-ear stop washer is mechanical anti-loosening. During installation, one end is bent to tightly adhere to one side of the positioning block, and the other end is bent to tightly adhere to the opposite side surface of the bolt head. After installation of the double-ear stop washer, if the bolt has a loosening tendency, the washer will restrict the rotation of the bolt, thereby playing a stop and anti-loosening role.

[0003] The double-ear stop washer has two drawbacks: 1. When the bolt head is a hexagonal head, if the opposite angle of the bolt head after pre-tightening is directly opposite one "ear" of the washer, the washer cannot tightly adhere to the opposite side surface, and cannot play an anti-loosening role. 2. As the number of installation and disassembly increases, the washer will show obvious metal fatigue, and the anti-loosening effect will decrease. UTILITY MODEL CONTENT

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a new type of multi-ear stop washer, which aims to solve the problem of bolt loosening of the current double-ear stop washer during installation and use of the maintenance part (which needs to be installed and disassembled multiple times).

[0005] The technical scheme adopted by the utility model to solve its technical problem is: a new type of multi-ear stop washer, which includes one fastening ear and multiple stop ears, wherein the fastening ear is bent 90° perpendicular to the plane of the washer body, and the stop ears are slightly bent in the opposite direction of the bending direction of the fastening ear.

[0006] Compared with the prior art, the utility model has the following positive effects:

[0007] 1. Reducing 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. During installation of the bolt, the stop ear of the stop washer needs to be parallel to the opposite side surface of the bolt head as much as possible, otherwise the anti-loosening effect will be poor. The new type of multi-ear stop washer has multiple stop ears, and the angle requirement of the bolt head relative to the stop washer during installation of the bolt is low, and there is always a suitable stop ear that can be bent to prevent loosening.

[0008] 2. Improving the reuse rate. The double-ear stop washer has only one stop ear, and as the number of installation and disassembly increases, it will show obvious metal fatigue, so it cannot be used multiple times. The multi-ear stop washer has several stop ears, and only one ear or two ears are bent during each installation, and the remaining stop ears can be bent during the next installation, so the number of installation and disassembly can be higher.

[0009] 3, simplify the installation process, improve the installation efficiency. The original double lug stop washer installation, both lug need to be bent in the installation site, installation time-consuming, and the bolt is not bent after installation to the place, the stop lug will be close to the bolt connection surface, resulting in increased bending difficulty. The long end of the new multi-lug stop washer is pre-bent to 90° according to the actual installation size before installation, and does not need to be bent during installation; the stop lug has been slightly bent, and the bolt is easy to bend after installation to the place and close to the side surface of the bolt head for locking. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model will be explained through example and the mode of referring to the drawings, wherein:

[0011] Figure 1 It is the front view of the multi-lug stop washer of the utility model;

[0012] Figure 2 It is the side view of the multi-lug stop washer of the utility model;

[0013] Figure 3 It is the installation state schematic view of the multi-lug stop washer of the utility model;

[0014] The reference signs in the drawing include: stop lug 1, fastening lug 2, connecting piece 3, bolt 4. DETAILED DESCRIPTION

[0015] A new multi-lug stop washer, as shown in Figure 1 and Figure 2 , including stop lug 1 and fastening lug 2, wherein:

[0016] The stop washer of the utility model has a fastening lug 2, and the fastening lug is pre-bent by 90° in the uninstalled state, which is used to prevent the stop washer from rotating when the bolt is pre-tightened during installation; a plurality of stop lugs 1 are provided, and the stop lugs are slightly bent in the opposite direction of the pre-bending direction of the fastening lug, which does not affect the pre-tightening of the bolt and facilitates bending. If the stop lugs are not slightly bent, after the bolt is pre-tightened, the plurality of stop lugs will be close to the upper surface of the connecting piece, and it is not easy to bend, which makes installation difficult.

[0017] As shown in Figure 3 , the installation process of the multi-lug stop washer of the utility model is as follows:

[0018] 1) Align the inner hole of the multi-lug stop washer with the through hole of the connecting piece 3, and press the fastening lug 2 against the end surface of the connecting piece 3.

[0019] 2) Put in the bolt 4, and then pre-tighten.

[0020] 3) After pre-tightening, select one to two stop lugs opposite to the side surface of the bolt head to be bent and close to the side surface of the bolt head, and the installation is completed.

[0021] The working principle of the utility model is:

[0022] The novel multi-ear stop washer anti-loose principle is mechanical anti-loose, and the installation process is that the pre-bent long end is close to one side of the positioning block, and the multi-ear end can be bent to be close to the side surface of the opposite side of the bolt head by 1 ear or 2 ears. When the bolt has a loosening trend after the multi-ear stop washer is installed, the stop ear of the multi-ear stop washer can limit the rotation of the bolt, so that the stop and anti-loose effect is achieved.

Claims

1. A new multi-ear stop washer characterized by: The gasket comprises one fastening ear and multiple stop ears, wherein the fastening ear is bent 90° perpendicularly to the gasket body plane, and the stop ears are slightly bent in the opposite direction of the fastening ear bending direction.

2. A novel multi-ear stop washer as claimed in claim 1, wherein: The width of the fastening ear is greater than the width of the stop ear.

3. A new multi-ear stop washer as claimed in claim 1, wherein: The overall length of the fastening ear is greater than the length of the stop ear.

4. A new multi-ear stop washer as claimed in claim 1, wherein: The stop ears are evenly distributed in the gasket circumferential direction.

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