CN202040181U - Bolt - Google Patents

Abstract

The utility model relates to a bolt, comprising a bolt head and a bolt rod. The bolt is characterized in that a groove is arranged on the external wall of the bolt rod. By adopting the technical scheme, impurities can be removed effectively, and the bolt has long service life and can be disassembled and assembled conveniently.

Description

A kind of bolt

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of fastening piece, is specifically related to a kind of bolt.

Background technique

Bolt generally is used for being fastenedly connected two parts that have through hole, if but when using, get rusty, have paint or other impurity is arranged on the part that needs to connect, then can influence the dismounting of bolt, go down for a long time, can reduce the working life of bolt.

Summary of the invention

At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of can effectively take impurity out of, long service life, and the novel bolt of easy accessibility.

For achieving the above object, the utility model provides following technological scheme: a kind of bolt, comprise bolt head and bolt shank, and it is characterized in that: the outer wall of described bolt shank is provided with groove.

Groove is arranged on the outer wall of bolt shank, can effectively take impurity out of, the working life of the bolt that extended.

The utility model further is set to: described groove is located on the outer wall of the relative bolt head the other end of bolt shank.

Groove is in bolt shank bottom, drops out again after avoiding impurity to fall into groove, also can not make the screw thread on the bolt shank intermittent, has guaranteed the working life and the tightness of bolt.

The utility model further is set to: described bolt head comprises limited part and tightens portion that the limited part external diameter is greater than the portion of tightening.

By adopting technique scheme, make the bolt location more firm, dismounting is more laborsaving.

The utility model further is set to: the limited part of described bolt head and tighten and be provided with elastic component between the portion.

By adopting technique scheme, make the tightness of bolt stronger.

Description of drawings

Fig. 1 is the utility model bolt example structure schematic representation;

Fig. 2 is the left view of Fig. 1.

Embodiment

Referring to Fig. 1, Fig. 2, the disclosed bolt of the utility model comprises bolt head 1 and bolt shank 2, and the outer wall of bolt shank 2 is provided with groove 21, and being provided with of groove 21 can be taken impurity out of, adds the working life of stay bolt.

Groove 21 is located on the outer wall of bolt shank 2 relative bolt head 1 the other ends and (it should be noted that herein, groove 21 can be arranged on any one on the outer wall of bolt shank 2, more obvious for making bolt take the effect of impurity out of, present embodiment is preferred, and groove 21 is arranged on the outer wall of bolt shank 2 relative bolt head 1 the other ends).

Bolt head 1 comprises limited part 12 and tightens portion 11, and limited part 12 external diameters are greater than the portion's of tightening 11 external diameters, and such being provided with can make the tightness of bolt stronger, and dismounting is more convenient.

The limited part 12 of described bolt head 1 and tighten and be provided with elastic component 13 between the portion 11.Elastic component 13 the further tightness of strengthening bolt is set.

Specific operation process is as follows:

When the user uses, bolt is placed on the part through hole that needs to cooperate, hand is placed on the portion of tightening 11 and is rotated, and then rotation of bolt shank 2, the impurity on the part can fall into groove 211 at this moment, and bolt is taken out, pour out the impurity in the groove 211, the part that again bolt is screwed in required cooperation gets final product.

Claims (4)

1. a bolt comprises bolt head and bolt shank, it is characterized in that: the outer wall of described bolt shank is provided with groove.

2. bolt according to claim 1 is characterized in that: described groove is located on the outer wall of the relative bolt head the other end of bolt shank.

3. bolt according to claim 1 and 2 is characterized in that: described bolt head comprises limited part and tightens portion that the limited part external diameter is greater than tightening portion's external diameter.

4. bolt according to claim 3 is characterized in that: the limited part of described bolt head and tighten and be provided with elastic component between the portion.

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