CN209838916U

CN209838916U - Elastic locking bolt

Info

Publication number: CN209838916U
Application number: CN201822266117.0U
Authority: CN
Inventors: 杨铁良; 陈超; 王宇
Original assignee: Tianjin Shenglida Machinery Equipment Co Ltd
Current assignee: Tianjin Shenglida Machinery Equipment Co Ltd
Priority date: 2018-12-31
Filing date: 2018-12-31
Publication date: 2019-12-24
Anticipated expiration: 2028-12-31

Abstract

The utility model provides an elasticity locking bolt, including spiral shell head, screw rod and nut, the position that the nut terminal surface is close to the screw is provided with the back taper inner chamber of indent, and this elasticity locking bolt is still established the cushion on the screw rod including can the cover, be provided with the bulge loop that can extrude nut back taper inner chamber around cushion side face ring centre bore. This elasticity locking bolt is when fastening, and the bulge loop on the cushion is crowded in the nut, fills in the clearance between nut and screw rod thread, has strengthened the frictional force between nut and the screw rod thread, and has the effect that the shock attenuation disappears, very big reinforcing nut and screw rod threaded connection's fastness, just also corresponding anti-loosening's purpose of having reached. The elastic locking bolt starts from the existing part of the bolt fastener, achieves the purpose of preventing loosening through the optimization and improvement of the structure of the elastic cushion, has the advantages of ingenious design and low cost, and can be popularized in a large range.

Description

Elastic locking bolt

Technical Field

The utility model relates to a mechanical equipment fastener field, in particular to elasticity locking bolt.

Background

The problem of loosening prevention of bolt fasteners has been a major problem that plagues researchers in the field. In order to solve the problem, researchers develop anti-loosening bolts with various structures, and some anti-loosening bolts utilize corresponding structures to apply pressure to threaded connection between nuts and screws and enhance anti-loosening effect by increasing friction force; some anti-rotation units which utilize corresponding structures to enable the nuts to rotate in a limited mode are fixedly connected, and the anti-falling effect is enhanced by limiting the rotation of the nuts. These improvements can all strengthen the locking performance of taking off of bolt fastener to a certain extent, but various complicated structures also make the bolt cost of manufacture increase greatly, are unfavorable for promoting.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides an elasticity locking bolt, this elasticity locking bolt's technical scheme is realized like this:

elasticity locking bolt, including spiral shell head, screw rod and nut, the position that the nut terminal surface is close to the screw is provided with the back taper inner chamber of indent, and this elasticity locking bolt still includes can the cover establish the cushion on the screw rod, be provided with the bulge loop that can extrude nut back taper inner chamber around cushion one side terminal surface ring centre bore.

Furthermore, a notch is formed in the screw rod, a position supplementing column matched with the notch is arranged at a corresponding position on the elastic pad, and the height of the position supplementing column is not less than half of the height of the nut.

Furthermore, the radius of the circle where the section of the outer side wall of the position supplementing column is located is larger than the radius of the circle where the section of the side wall provided with threads on the screw rod is located.

Furthermore, a hard rod is arranged in the position supplementing column.

This elasticity lock bolt is when fastening, adorn the cushion earlier on the screw rod, twist soon when the nut to with treat that the fastener is tight to, press from both sides and establish the nut and treat that the cushion between the fastener is by extrusion deformation, in the bulge loop on the cushion extrudes into the nut, fill in the clearance between nut and screw rod thread, the frictional force between nut and the screw rod thread has been strengthened, and the effect that has the shock attenuation and disappears, very big reinforcing nut and screw rod threaded connection's fastness, just also corresponding anti-loosening's purpose has been reached. The elastic locking bolt starts from the existing part of the bolt fastener, achieves the purpose of preventing loosening through the optimization and improvement of the structure of the elastic cushion, has the advantages of ingenious design and low cost, and can be popularized in a large range.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of the present elastic lock bolt construction;

FIG. 2 is a schematic view of the structure of the elastic pad;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic view of another configuration of the elastic pad;

FIG. 5 is a cross-sectional view of a screw of one construction;

FIG. 6 is a cross-sectional view of a screw in another configuration;

FIG. 7 is a schematic view of a corresponding elastic pad of the screw of FIG. 5;

fig. 8 is a schematic view of the elastic pad corresponding to the screw of fig. 6.

Description of reference numerals:

in the figure: 1. the screw comprises a screw head, a screw rod 2, a nut 3, an elastic cushion 4, a convex ring 5, a position compensation column 6, a hard rod 7, a limiting edge 8 and a groove 9.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Elasticity locking bolt, as shown in fig. 1, 2, 3, including spiral shell head 1, screw rod 2 and nut 3, the position that 3 terminal surfaces of nut are close to the screw is provided with the back taper inner chamber of indent, and this elasticity locking bolt is still established the cushion 4 on screw rod 2 including the ability cover, be provided with the bulge loop 5 that can extrude 3 back taper inner chambers of nut around the 4 side end face ring centre bore of cushion.

This elasticity lock bolt is when fastening, earlier adorn the cushion 4 on the screw rod, twist soon when the nut to with treat that the fastener is tight to, press from both sides and establish the nut and treat that the cushion 4 between the fastener is by extrusion deformation, bulge loop 5 on the cushion 4 is crowded in the nut 3, fill in the clearance between nut 3 and 2 threads of screw rod, the frictional force between 3 and 2 threads of screw rod of nut has been strengthened, and have the effect that the shock attenuation disappears and shakes, very big reinforcing 3 and 2 threaded connection's of screw rod fastness, just also corresponding anti-loosening purpose that has reached. The elastic locking bolt starts from the existing part of a bolt fastener, achieves the purpose of preventing loosening through the optimization and improvement of the structure of the elastic cushion 4, has the advantages of ingenious design and low cost, and can be popularized in a large range.

In the elastic locking bolt, the screw rod 2 is provided with a notch, such as a limiting edge 8 shown in fig. 5, and further, such as a slot 9 shown in fig. 6, for this situation, the elastic pad 4 needs to be improved appropriately, as shown in fig. 4, 7 and 8, a position supplementing column 6 matched with the notch is arranged at a corresponding position on the elastic pad 4, and the height of the position supplementing column 6 is not less than one half of the height of the nut 3.

In this elasticity locking bolt, the round radius that the 6 lateral wall cross-sections of benefit post are located is greater than and sets up threaded lateral wall cross-sections place round radius on the screw rod 2, because benefit post 6 also is made by elastic material, suitable expansion can strengthen the extrusion effect between benefit post 6 and nut, the screw rod.

In this elasticity locking bolt, if the breach is too big, can exert an influence to the intensity of screw rod 2, be provided with stereoplasm pole 7 in the benefit position post 6, the intensity of reinforcing screw rod that can be appropriate.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an elasticity locking bolt, includes spiral shell head (1), screw rod (2) and nut (3), the position that nut (3) terminal surface is close to the screw is provided with the back taper inner chamber of indent, its characterized in that: still establish elastic pad (4) on screw rod (2) including the cover, be provided with bulge loop (5) that can extrude into nut (3) back taper inner chamber around elastic pad (4) one side terminal surface ring centre bore.

2. The elastic locking bolt of claim 1, wherein: the screw rod (2) is provided with a notch, the elastic pad (4) is provided with a position supplementing column (6) matched with the notch at a corresponding position, and the height of the position supplementing column (6) is not less than one half of the height of the nut (3).

3. The elastic locking bolt of claim 2, wherein: the radius of the circle of the section of the outer side wall of the position-compensating column (6) is larger than the radius of the circle of the section of the side wall provided with threads on the screw rod (2).

4. The elastic locking bolt of claim 2, wherein: and a hard rod (7) is arranged in the position compensating column (6).