CN202520745U - Screw bolt - Google Patents

Abstract

The utility model provides a screw bolt. The screw bolt comprises a screw bolt head portion (1), a threaded rod (2) and a spring seat (3), wherein the surface of the threaded rod (2) is provided with external threads, and the spring seat (3) is positioned between the screw bolt head portion (1) and the threaded rod (2). The screw bolt is capable of fixing a spring, and is good in stability when used in fixing.

Description

A kind of bolt

Technical field

The utility model relates to the mechanical parts technical field, is specifically related to a kind of bolt.

Background technique

One type of fastening piece that bolt is made up of bolt head and screw rod (having externally threaded cylindrical body).In use, sometimes in order to realize its functional requirement, need be at screw rod bottom socket one spring.But the bolt of existing technology is not owing to there are the parts of retaining spring, and this makes and occur easily between spring and the screw rod relatively moving, thereby has increased the unstability of this bolt.

The model utility content

The utility model technical problem to be solved provides a kind of bolt that can retaining spring, good stability when using this bolt fixedly.

For addressing the above problem, the utility model provides a kind of bolt, and this bolt comprises bolt head, screw rod and spring seat, and said screw surface is provided with outside thread, and said spring seat is between bolt head and screw rod.

Said bolt head, spring seat and screw rod are formed in one.

After adopting above structure; The utility model compared with prior art; Have the following advantages: the utility model bolt except the bolt head and screw rod that comprise existing technology, also comprise one can retaining spring spring seat, so the bolt of the utility model is provided with the parts of retaining spring ad hoc; This makes and can not occur between spring and the screw rod relatively moving, thereby has increased the stability of this bolt.

Description of drawings

Shown in the drawings is the structural representation of a kind of bolt of the utility model.

Wherein: 1, bolt head; 2, screw rod; 3, spring seat.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to detail.

Shown in accompanying drawing; A kind of bolt of the utility model comprises bolt head 1, screw rod 2 and spring seat 3, and said screw rod 2 is a cylindrical body, and said screw rod 2 surfaces are provided with outside thread; Said spring seat 3 is a cylindrical body, and said spring seat 3 is between bolt head 1 and screw rod 2.Said bolt head 1, spring seat 3 and screw rod 2 are formed in one.The sectional area of said spring seat 3 with spring just socket be as the criterion on it because spring seat 3 is different with the cross-sectional sizes of screw rod 2, so understand the inclined-plane of a transition of existence between spring seat 3 and the screw rod 2.Close the getting final product of length that appears after the shared length in the inclined-plane of said spring seat 3 and transition is compressed with the use medi-spring.

Last embodiment be to the explanation of the utility model with explain that further rather than to the restriction of the utility model, any modification of in the interest field of the utility model, being done all falls into the protection domain of the utility model.

Claims (2)

1. a bolt comprises bolt head (1) and screw rod (2), and said screw rod (2) surface is provided with outside thread, it is characterized in that: also comprise spring seat (3), said spring seat (3) is positioned between bolt head (1) and the screw rod (2).

2. a kind of bolt according to claim 1 is characterized in that: said bolt head (1), spring seat (3) and screw rod (2) are formed in one.