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Double-layer dish tooth surface combination gasket

A technology of combining washers and washers, applied in washers, connecting components, mechanical equipment, etc., can solve problems such as lack of elasticity and inability to compensate for the loss of preloading force

Inactive Publication Date: 2015-12-09
上海格姆特紧固技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The washer has a good effect on preventing the bolt from loosening, but because it has no elasticity, it cannot compensate the loss of preload

Method used

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  • Double-layer dish tooth surface combination gasket

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Effect test

Embodiment

[0016] Such as figure 1 A double-layer dish-shaped tooth surface combined washer is shown, including a first washer 1 and a second washer 2, the first washer 1 and the second washer 2 are provided with through holes 3 inside, the first washer 1 and the second washer 2 The second washer 2 is a disc-shaped structure, the lower surface of the first washer 1 and the upper surface of the second washer 2 are respectively provided with interlocking serrations 4 that interlock with each other, and the first washer 1 and the second washer 2 are engaged by the engaging serrations 4 together. The meshing serrations 4 are preferably radial. The upper surface of the first washer 1 and the lower surface of the second washer 2 are respectively provided with anti-loosening serrations 5 . The anti-loosening saw teeth 5 are preferably radial. The tooth pitch of the meshing sawtooth 4 is greater than the tooth pitch of the anti-loosening sawtooth 5 .

[0017] When the bolt is installed, the ...

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Abstract

The invention discloses a double-layer dish tooth surface combination gasket which comprises a first gasket and a second gasket, wherein the insides of the first gasket and second gasket are respectively provided with a through hole; the first gasket and second gasket are respectively a dish structure; the lower surface of the first gasket and the upper surface of the second gasket are respectively provided with meshing saw teeth which are matched in a mutually staggered mode; and the first gasket meshes with the second gasket through the meshing saw teeth. The plane of the double-layer locking combination gasket is pressed into the dish, and the upper and lower surfaces become conical surfaces, so that the integral combination gasket becomes a dish; and in the bolt mounting process, since the dish is flattened by the pretightening force of the bolt, the elasticity of the dish can compensate the pretightening force of the bolt, thereby performing the locking function.

Description

technical field [0001] The invention belongs to the field of mechanical fastening, and in particular relates to a double-layer dish-shaped tooth surface combined washer. Background technique [0002] Loosening: In this patent, it mainly refers to the automatic loosening of bolts, which means that the installed bolts are gradually loosened due to vibration, temperature changes and other reasons without applying a loosening torque, and the pre-tightening force gradually decreases, or even falls off. Essentially, looseness is a reduction in preload. [0003] Anti-loosening: mainly refers to preventing loosening. [0004] At present, the commonly used spring washers adopt GB93 standard. The open spring produces elastic force when flattened, which ensures the pre-tightening force of the bolt and thus plays the role of anti-loosening. At the same time, the sharp corner of the opening is embedded in the surface of the workpiece, which increases the torque required for bolt rotatio...

Claims

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Application Information

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IPC IPC(8): F16B43/00
Inventor 吴争鸣
Owner 上海格姆特紧固技术有限公司
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