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Double-rod bolt

A technology of bolts and inner bolts, applied in the direction of bolts, screws, nuts, etc., which can solve problems such as easy loosening, discomfort, and easy loosening of fastening

Pending Publication Date: 2018-04-20
FUJIAN QUANZHOU JINZHENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The structure of the bolt usually includes a bolt head and a bolt shank with an integrated structure. The bolt shank is provided with an external thread. For fastening, the bolt shank is inserted into the bolt hole of the object to be fastened. The external thread on the rod matches the threaded internal thread. By turning the bolt head to tighten the bolt, the fastening is completed. This kind of fastening is easy to loosen, especially when it is used to fasten objects that are in a vibrating environment for a long time. It is easy to loosen. In order to prevent loosening, the current fastening method is to set the anti-loosening washer on the bolt rod before use to achieve anti-loosening. However, the existing ordinary bolts are not suitable for fastening objects with stricter anti-loosening requirements.

Method used

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Examples

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Embodiment Construction

[0031] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

[0032] A double rod bolt disclosed by the invention, such as figure 1 , figure 2 and image 3 As shown, it includes an outer bolt 1 and an inner bolt 2. The outer bolt 1 includes an outer bolt head 11 of an integral structure and an outer bolt rod 12 provided with an outer thread 121 extending to the end. The outer bolt 1 is axially opened with a through The outer bolt head 11 and the outer bolt shank 12 pass through the shaft hole 13. The inner bolt 2 includes an inner bolt head 21 and an inner bolt shank 22. The diameter of the inner bolt head 21 is greater than the diameter of the through shaft hole 13. The bolt shank 22 is inserted through the shaft hole 13 from the port at one end of the outer bolt head 11 and its end passes through the end of the outer bolt shank 12. The end of the inner bolt shank 22 ...

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Abstract

The invention discloses a double-rod bolt. The double-rod bolt comprises an outer bolt and an inner bolt. The outer bolt comprises an outer bolt head which is of an integrated structure and an outer bolt rod which is provided with an outer thread extending to the tail end. The outer bolt is axially provided with a through axle hole penetrating the outer bolt head and the outer bolt rod. The innerbolt comprises an inner bolt head and an inner bolt rod. The diameter of the inner bolt head is larger than the diameter of the through axle hole. The inner bolt rod is inserted into the through axlehole from an end opening in one end of the outer bolt head, and the tail end of inner bolt rod penetrates out of the tail end of the outer bolt rod. The tail end of the inner bolt rod is provided witha first outer thread. The inner bolt is additionally arranged to penetrate the outer bolt to be further screwed and locked, during fastening using, the inner bolt and the outer bolt are mutually restrained, and therefore loosing is not prone to occurring, and the anti-loosing effect is improved.

Description

technical field [0001] The invention relates to the field of fasteners, in particular to bolts. Background technique [0002] The structure of the bolt usually includes a bolt head and a bolt shank with an integrated structure. The bolt shank is provided with an external thread. For fastening, the bolt shank is inserted into the bolt hole of the object to be fastened. The external thread on the rod matches the threaded internal thread. By turning the bolt head to tighten the bolt, the fastening is completed. This kind of fastening is easy to loosen, especially when it is used to fasten objects that are in a vibrating environment for a long time. It is easy to loosen. For the fastening currently adopted for anti-loosening, anti-loosening washers are set on the bolt shank to realize anti-loosening, but the existing common bolts are not suitable for fastening objects with stricter anti-loosening requirements. In view of this, the inventor of this case devoted himself to the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/00F16B39/282F16B39/26
CPCF16B35/00F16B39/26F16B39/282
Inventor 蔡金丰
Owner FUJIAN QUANZHOU JINZHENG MACHINERY
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