CN211370952U

CN211370952U - Novel anti-drop bolt

Info

Publication number: CN211370952U
Application number: CN201922374455.0U
Authority: CN
Inventors: 陈海林
Original assignee: Alfasen Fastening Technology Changzhou Co ltd
Current assignee: Alfasen Fastening Technology Changzhou Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-28
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a novel anti-drop bolt, thread tooth on screw rod and the screw rod that has the nut, two spacing grooves have been seted up to the one end symmetry that the nut was kept away from to the screw rod, and every spacing groove top is provided with the fixing base, the fixing base has the connecting piece through fixed pin swing joint, and the connecting piece below is connected with the stopper, be connected with compression spring between inboard and the spacing inslot wall in stopper below. This novel anti-drop bolt, simple structure, the assembly is reasonable, can prevent effectively that the fixture from falling.

Description

Novel anti-drop bolt

Technical Field

The utility model belongs to the technical field of the bolt, concretely relates to novel anti-drop bolt.

Background

Bolt: mechanical parts, cylindrical threaded fasteners fitted with nuts. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes.

In a special environment, particularly a vibration environment, a bolt and a nut structure on machinery are easy to loosen and slowly fall off, so that parts of a fixed mechanical device fall off, mechanical faults are caused, and even casualties can be caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel anti-drop bolt to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel anti-drop bolt, thread on screw rod and the screw rod that has the nut, two spacing grooves have been seted up to the one end symmetry that the nut was kept away from to the screw rod, and every spacing groove top is provided with the fixing base, the fixing base has the connecting piece through fixed pin swing joint, and the connecting piece below is connected with the stopper, be connected with compression spring between the inboard and the spacing inslot wall in stopper below.

Preferably, the limiting block can be completely placed in the limiting groove.

Preferably, a stop block is arranged above the limiting block and close to the outer side.

Preferably, the outer side of the limiting block is provided with a thread with the same size as the screw.

The utility model discloses a technological effect and advantage: this novel anti-drop bolt, simple structure, the assembly is reasonable, through the stopper perk, can prevent effectively that the nut from coming off from the screw rod that drops to can prevent effectively by dropping of fixed object spare.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

fig. 2 is a schematic view of the main structure of the nut screwed in according to the present invention.

In the figure: 1. a nut; 2. a screw; 3. thread teeth; 4. a limiting groove; 5. a fixed seat; 6. a connecting member; 7. a fixing pin; 8. a limiting block; 9. a stopper; 10. compressing the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a as shown in figure 1, figure 2 novel anti-drop bolt, thread 3 on screw rod 2 and the screw rod 2 that have nut 1, two spacing grooves 4 have been seted up to the one end symmetry that nut 1 was kept away from to

screw rod

2, and 4 tops in every spacing groove are provided with fixing base 5, fixing base 5 has connecting piece 6 through 7 swing joint of fixed pin, and 6 below of connecting piece are connected with stopper 8, be connected with compression spring 10 between the inboard 4 inner walls in stopper 8 below and the spacing groove.

Specifically, the limiting block 8 can be completely placed in the limiting groove 4.

Specifically, a stop block 9 is arranged above the limiting block 8 and close to the outer side.

Specifically, the outer side of the limiting block 8 is provided with a thread 3 with the same size as the screw rod 2.

The working principle is as follows: this novel anti-drop bolt, under natural state, as figure 1 stopper 8 one end can be certain angle and open, when using, at first twist into the bolt screw in treating the hole of mounting, then 2 screw in the nut on the screw rod again, along with constantly twisting in of nut, stopper 8 can slowly retract into spacing groove 4 under the inboard pressure of nut, compression spring 10 compresses this moment, treat that the nut passes behind stopper 8, stopper 8 lower extreme can open certain angle under the effect of compression spring 10 elasticity momentum, dog 9 can contradict with spacing groove 4 end simultaneously, it is too big to make stopper 8 can not open the angle, stopper 8 makes the nut can not drop from the bolt because of vibrations or other reasons this moment, fine spacing fixed action has been played to the mounting.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a novel anti-drop bolt, thread (3) on screw rod (2) and screw rod (2) that have nut (1), its characterized in that: two spacing grooves (4) have been seted up to screw rod (2) one end symmetry of keeping away from nut (1), and every spacing groove (4) top is provided with fixing base (5), fixing base (5) have connecting piece (6) through fixed pin (7) swing joint, and connecting piece (6) below is connected with stopper (8), be connected with compression spring (10) between stopper (8) below inboard and spacing groove (4) inner wall.

2. A novel drop-proof bolt as defined in claim 1, wherein: the limiting block (8) can be completely placed in the limiting groove (4).

3. A novel drop-proof bolt as defined in claim 1, wherein: a stop block (9) is arranged above the limiting block (8) and close to the outer side.

4. A novel drop-proof bolt as defined in claim 1, wherein: and the outer side of the limiting block (8) is provided with a thread (3) with the same size as the screw rod (2).