CN215720132U

CN215720132U - Bolt with good connection fastening and anti-falling effects

Info

Publication number: CN215720132U
Application number: CN202122366834.2U
Authority: CN
Inventors: 崔福强; 姚建军
Original assignee: Shenzhen Futaixing Precision Manufacturing Co ltd
Current assignee: Shenzhen Futaixing Precision Manufacturing Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-01
Anticipated expiration: 2031-09-29

Abstract

The utility model provides a bolt with good connecting, fastening and anti-falling effects, which comprises a screw rod, wherein the surface of the screw rod is provided with external threads, the bottom of the screw rod is coaxially connected with a hexagonal head, the bolt also comprises a first nut and a second nut, the top surface of the second nut is provided with a plurality of mounting holes which are annularly arranged, the mounting holes are blind holes, the bottom of each mounting hole is provided with a spring, the top of each mounting hole is provided with a limiting pin, the bottom of each limiting pin is located on the spring, and the top of each limiting pin is an inclined plane which inclines towards the same direction; the first nut is located the top of second nut, sets up a plurality of bar-shaped structure's draw-in groove at the bottom face of first nut, the draw-in groove all radially sets up with first nut, the top of spacer pin is located the draw-in groove. When the bolt is used, the upper nut and the lower nut are positioned, so that the bolt cannot be loosened in the long-term use process.

Description

Bolt with good connection fastening and anti-falling effects

Technical Field

The utility model belongs to the technical field of bolts, and particularly relates to a bolt with good connection fastening and anti-falling effects.

Background

Bolts are the most common fasteners, for example, in equipment, the bolts are used for a long time or some bolts may loosen, so that not only the safe use of machinery cannot be guaranteed, but also the failure rate of the machinery is increased, and therefore, a bolt with good connection fastening and anti-dropping effects is proposed to solve the problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the bolt with good connection, fastening and anti-falling effects.

The technical scheme of the utility model is realized as follows:

the bolt with good connecting, fastening and anti-falling effects comprises a screw rod, wherein external threads are arranged on the surface of the screw rod, a hexagonal head is coaxially connected to the bottom of the screw rod, the bolt further comprises a first nut and a second nut, a plurality of mounting holes which are annularly arranged are formed in the top surface of the second nut, the mounting holes are blind holes, a spring is placed at the bottom of each mounting hole, a limiting pin is placed at the top of each mounting hole, the bottom of each limiting pin is located on the corresponding spring, and the top of each limiting pin is an inclined plane which inclines towards the same direction;

the first nut is located the top of second nut, sets up a plurality of bar-shaped structure's draw-in groove at the bottom face of first nut, the draw-in groove all radially sets up with first nut, the top of spacer pin is located the draw-in groove.

Preferably, the bottom surface of second nut is equipped with the second anti-skidding arch of a plurality of bar structure, the second anti-skidding arch all sets up with the second nut is radial, the bellied surface of second anti-skidding is the arcwall face.

Preferably, the top of hexagonal head has overlapped the anti-skidding gasket of loop configuration, and the top of anti-skidding gasket is equipped with the first anti-skidding arch of a plurality of bar structure, and the bellied surface of first anti-skidding is the arcwall face.

Preferably, a gasket is arranged between the first nut and the second nut, the gasket is arranged on the limit pin in a penetrating mode, and the cross section of the limit pin is of an oval structure or a regular polygon structure.

Compared with the prior art, when the bolt is used, the first nut is positioned above the second nut, the two nuts are simultaneously screwed on the same screw rod to play a fastening role, and the top of the second nut is clamped with the clamping groove through the limiting pin, so that the upper nut and the lower nut are positioned, and the bolt cannot be loosened in a long-term use process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic front view of a bolt with good connection, fastening and anti-separation effects according to the present invention.

Fig. 2 is a schematic bottom structure view of a bolt with good connection, fastening and anti-separation effects according to the present invention.

Fig. 3 is a connection diagram of a limiting pin and a spring of the bolt with good connection, fastening and anti-falling effects.

In the figure: the anti-skidding nut comprises a screw rod 1, an anti-skidding gasket 2, a hexagonal head 3, a first anti-skidding bulge 4, a mounting hole 5, an inclined plane 6, a first nut 7, a limiting pin 8, a gasket 9, a second nut 10, a second anti-skidding bulge 11, a clamping groove 12 and a spring 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a bolt with good connection fastening anti-drop effect comprises a screw rod 1, wherein the surface of the screw rod 1 is provided with external threads, and the bottom of the screw rod 1 is coaxially connected with a hexagonal head 3;

the nut structure also comprises a first nut 7 and a second nut 10, wherein the top surface of the second nut 10 is provided with a plurality of mounting holes 5 which are annularly arranged, the mounting holes 5 are blind holes, a spring 13 is placed at the bottom in each mounting hole 5, a limiting pin 8 is placed at the top of each mounting hole 5, the bottom of each limiting pin 8 is located on the spring 13, and the tops of the limiting pins 8 are inclined planes 6 which are inclined towards the same direction;

first nut 7 is located the top of second nut 10, offers a plurality of bar structure's draw-in groove 12 at first nut 7's bottom face, draw-in groove 12 all sets up with first nut 7 is radial, the top of spacer pin 8 is located draw-in groove 12.

Specifically, when the screw rod 1 is inserted into a screw hole, the second nut 10 is firstly screwed on the screw rod 1, the second nut 10 is firstly contacted with a pre-tightened object, then the first nut 7 is screwed above the second nut 10, along with the gradual progressive movement of the first nut 7, when the lower part of the first nut 7 is contacted with the limiting pin 8, the bottom of the first nut 7 slides along the top surface inclined plane 6 of the limiting pin 8, and when the first nut 7 rotates in the direction, the top of the limiting pin 8 is positioned in the clamping groove 12.

Further, as shown in fig. 2, a plurality of second anti-slip protrusions 11 with a strip-shaped structure are arranged on the bottom surface of the second nut 10, the second anti-slip protrusions 11 are all arranged in a radial direction with the second nut 10, and the surface of the second anti-slip protrusions 11 is an arc-shaped surface.

Further, as shown in fig. 1, an anti-slip pad 2 with an annular structure is stacked on the top of the hexagonal head 3, a plurality of first anti-slip protrusions 4 with a strip-shaped structure are arranged on the top of the anti-slip pad 2, and the surface of each first anti-slip protrusion 4 is an arc-shaped surface.

Further, as shown in fig. 1, a gasket 9 is disposed between the first nut 7 and the second nut 10, the gasket 9 is disposed on the limit pin 8 in a penetrating manner, and a cross section of the limit pin 8 is an elliptical structure or a regular polygon structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a connect effectual bolt of fastening anticreep, including screw rod (1), the surface of screw rod (1) is equipped with the external screw thread, at bottom coaxial coupling hexagon head (3) of this screw rod (1), a serial communication port, still include first nut (7) and second nut (10), the top surface of second nut (10) is seted up a plurality of and is annular arrangement's mounting hole (5), mounting hole (5) are the blind hole, spring (13) have all been placed to the bottom in every mounting hole (5), spacer pin (8) have been placed at the top of mounting hole (5), the bottom of spacer pin (8) is located on spring (13), wherein, the top of spacer pin (8) is towards inclined plane (6) of same direction slope;

first nut (7) are located the top of second nut (10), offer draw-in groove (12) of a plurality of bar structure at the bottom face of first nut (7), draw-in groove (12) all radially set up with first nut (7), the top of spacer pin (8) is located draw-in groove (12).

2. The bolt with good connecting, fastening and anti-dropping effects according to claim 1, characterized in that a plurality of second anti-slip protrusions (11) with a strip-shaped structure are arranged on the bottom surface of the second nut (10), the second anti-slip protrusions (11) are radially arranged with the second nut (10), and the surface of the second anti-slip protrusions (11) is an arc-shaped surface.

3. The bolt with good connecting, fastening and anti-dropping effects according to claim 1 is characterized in that the top of the hexagonal head (3) is overlapped with an anti-slip gasket (2) of an annular structure, the top of the anti-slip gasket (2) is provided with a plurality of first anti-slip protrusions (4) of strip-shaped structures, and the surface of each first anti-slip protrusion (4) is an arc-shaped surface.

4. The bolt with good connecting, fastening and anti-dropping effects according to claim 1, characterized in that a gasket (9) is arranged between the first nut (7) and the second nut (10), the gasket (9) is arranged on the limit pin (8) in a penetrating manner, and the cross section of the limit pin (8) is of an oval structure or a regular polygon structure.