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Locking type binding bolt

A tightening bolt and locking technology, applied in the field of locking tightening bolts, can solve problems such as inconvenient disassembly, and achieve the effect of preventing loosening and convenient use.

Inactive Publication Date: 2008-01-16
BEIJING 3 D SPINAL ORTHOPEDICS S&T CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent loosening, some people use adhesive on the fastening bolts, which will cause inconvenience to disassembly

Method used

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  • Locking type binding bolt

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Experimental program
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Embodiment Construction

[0013] Referring to FIG. 1 , the locking fastening bolt is composed of a screw 1 and a nut 2 , and the threaded end of the equal-diameter screw 1 is symmetrically inwardly recessed into a screw hole 101 along the central axis, and the depth of the screw hole 101 is smaller than the thickness of the nut 2 . Cooperating with the screw hole 101, an embedded part—a lock cap screw 102 is provided, which can block the retreat of the nut 2. The helical direction of the lock cap screw 102 is opposite to the helical direction of the screw rod 1, so as to cooperate with each other and be firmly tightened.

[0014] Referring to FIG. 2 , the outer end surface 201 of the nut 2 has a tapered slope structure;

[0015] Referring to FIG. 1 and FIG. 2 , the umbrella-shaped inner surface 103 of the cap screw 102 coincides with the tapered outer end surface 201 of the nut 2 .

[0016] When in use, the screw rod 1 is inserted into the hole of the object to be fastened, the object to be fastened i...

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PUM

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Abstract

The invention relates to a locking type fastening bolt, which is composed of a screw rod and a screw nut. The invention is characterized in that the screwed end of the screw rod is also provided with a screw hole and a lock cap screw, the lock cap screw is matting with the screw hole, and the depth of the screw hole is smaller than the thickness of the screw nut. The outer end surface of the screw nut has conical slope structure. The lock cap screw has mushroom cap structure, and its cap-shaped inner surface is matting with the outer end surface of the screw nut with conical slope structure. The screw thread rotation direction of the lock cap screw is opposite to the rotation direction of the screw rod. The invention can prevent being loosened, and has the advantages of firmness, reliable performance, convenient usage, and slippage resistance.

Description

technical field [0001] The invention relates to a bolt fastener, in particular to a locking type fastening bolt which prevents the nut from loosening in a locking manner. Background technique [0002] Bolts are the basics of industry and are used on almost all machines. Existing bolts are generally composed of a screw and a nut, the screw is equal in diameter, and the thread of the nut matches the thread of the screw. The object fastened by this bolt is easy to loosen under the action of vibration or other external forces, and even the nut falls off. Accidents are common. Because the anti-loosening of existing bolts is realized by thread friction between the nut and the screw rod, the friction area will be increased for anti-loosening. In the existing standard, spring washers are generally used for anti-loosening, and at the same time, two nuts are used to fasten the screw rod to expose 2 to 3 turns of threaded buttons, which wastes material and is not attractive in appear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/28F16B37/00F16B35/06
Inventor 张益张吉林
Owner BEIJING 3 D SPINAL ORTHOPEDICS S&T CO LTD