CN214036446U

CN214036446U - Combined bolt

Info

Publication number: CN214036446U
Application number: CN202022946281.3U
Authority: CN
Inventors: 饶陈伟; 陈国龙; 彭威; 孙浩
Original assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Current assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-24
Anticipated expiration: 2030-12-11

Abstract

The utility model belongs to the technical field of the fastener, concretely relates to combination bolt, this combination bolt contains: the bolt head portion, screw portion, the recess portion that is located between bolt head portion and screw portion, gasket. The utility model has the advantages that the bolt and the gasket are combined into an integrated structure, the use is more convenient, and the working efficiency can be effectively improved; meanwhile, the inner aperture of the gasket is smaller than the outer diameter of the threaded part, so that the gasket cannot fall off in the installation process. The utility model discloses a design is simple, low cost, and the practicality is strong.

Description

Combined bolt

Technical Field

The utility model belongs to the technical field of the fastener, relate to a combination bolt particularly.

Background

Bolts are widely used in mechanical manufacture for releasable connections, typically in conjunction with a nut, usually with the addition of one or more washers.

The existing bolt and the gasket are generally independent structures, and when the bolt is used, the gasket is firstly sleeved on the bolt in a penetrating mode, and then the bolt is screwed into a fastened piece. The pad is generally thin and is not easy to take, and particularly thick gloves need to be worn in some special operations, so that the operation difficulty is increased; the gasket is sleeved on the bolt in a penetrating manner, and the gasket is easy to fall off in the subsequent fastening operation, so that the working efficiency is reduced.

Disclosure of Invention

In order to solve the problem, the utility model provides a combination bolt.

The assembling bolt includes: the bolt head part, the thread part, the groove part between the bolt head part and the thread part and the gasket; the threaded part, the groove part and the gasket are coaxially arranged;

the groove part is prepared by a grooving and stacking process, and one or more gaskets are sleeved in the groove; the gasket can be a flat gasket or an arc gasket; the total thickness of the gasket does not exceed the bottom diameter of the groove; the inner bore diameter of the gasket is smaller than the outer diameter of the threaded part, so that the gasket can be limited from falling off, and the problems that the bolt and the gasket of a split structure are inconvenient to operate and the gasket is easy to fall off during assembly are fundamentally solved.

The utility model relates to a combination bolt preparation course of working mainly has three steps:

1. firstly, coaxially sleeving a gasket on a screw rod;

2. then, manufacturing a groove part by adopting a grooving and stacking process;

3. and finally hobbing or thread rolling to process the thread part.

Preferably, the groove part is respectively provided with a stacking area with the diameter larger than that of the groove from top to bottom, and the stacking area is in a circular truncated cone shape or a cylindrical shape, so that the gasket can be effectively prevented from falling off from the groove.

The gasket preferred be two gear anti-skidding gaskets, the cooperation use can increase and by the frictional force on fastener surface, effectively improve assembling bolt's locking effect.

The utility model discloses compare with current components of a whole that can function independently bolt, there are following advantages: firstly, the bolt and the gasket are combined into an integral structure, so that the use is more convenient and the working efficiency can be effectively improved; and the inner hole diameter of the gasket is smaller than the outer diameters of the stockpiling area and the threaded part, so that the gasket cannot fall off in the installation process even if the installation position of the bolt is special. The utility model discloses a design is simple, low cost, and the practicality is strong.

Drawings

Fig. 1 is a schematic cross-sectional view of a combination bolt according to the present invention.

Fig. 2 is a partial schematic view of a sectional view of the assembling bolt according to the present invention.

Fig. 3 is a schematic cross-sectional view of a combination bolt according to an embodiment of the present invention.

Fig. 4 is a schematic view of a mold for manufacturing a combination bolt according to an embodiment of the present invention.

In the drawing, 10 is a bolt head portion, 20 is a threaded portion, 30 is a groove portion, 40 is a gasket, 31 is an upper stacking area, 32 is a lower stacking area, D is a groove bottom diameter, and H is a groove height.

Detailed Description

The present invention will be further described in detail with reference to specific embodiments, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the present invention is not limited to the following embodiments.

Referring to fig. 1 to 4, an embodiment of a combination bolt, which is suitable for a connection of a vehicle body, specifically includes a head portion 10, a threaded portion 20, a groove portion 30 and a gasket 40, which are coaxially arranged; the recessed portion 30 is located between the head portion 10 and the threaded portion 20.

Referring to fig. 3, in the present embodiment, the groove portion 30 is provided with a stacking area having a diameter larger than that of the groove, so as to effectively prevent the gasket from falling off from the groove. In consideration of the stability of the overall strength of the bolt, the upper stacking zone 31 of the present embodiment is formed in a circular truncated cone shape, and the lower stacking zone 32 is formed in a cylindrical shape. The upper and lower stockpiling regions can also be arranged in a circular truncated cone shape or a cylindrical shape which has the same shape and is vertically symmetrical by taking the groove as a center.

The junction of the groove part and the stacking area is provided with a chamfer, so that the processing is convenient.

In the embodiment, two matched gear anti-skid gaskets are sleeved in the groove 30, and the sum of the thicknesses of the two gaskets is not more than the bottom diameter of the groove.

The preparation of the assembly bolt of the embodiment mainly comprises the following three steps.

First step, earlier adorn two gear anti-skidding gaskets on smooth screw rod, in this embodiment, the preferred thickness of gear anti-skidding gasket is 0.7mm, and two cooperation uses can increase and by the surperficial frictional force of fastener, effectively improves combination bolt's locking effect.

And secondly, manufacturing the groove part 30 and the upper and

lower stacking areas

31 and 32 by adopting a grooving and stacking process. Specifically, the height and the bottom diameter of the groove are strictly controlled, wherein the bottom diameter D of the groove is 1.5mm, and the height H of the groove is 0.5 mm; the thickness of the stockpiling zone in this example is 0.5 mm.

And thirdly, thread rolling to process a threaded part, and referring to fig. 4. Fig. 4 is a schematic view of a mold for manufacturing the assembly bolt according to the embodiment, in which the thread portion is formed by a thread rolling process, and after molding, the outer diameter of the thread portion is slightly larger than the inner aperture of the gasket, so that the gasket is prevented from falling off.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A composite bolt, comprising: the bolt head part, the thread part, the groove part between the bolt head part and the thread part and the gasket; the threaded part, the groove part and the gasket are coaxially arranged; the gasket is sleeved in the groove, the thickness of the gasket is not larger than the bottom diameter of the groove, and the inner aperture of the gasket is slightly smaller than the outer diameter of the threaded portion.

2. The assembling bolt according to claim 1, wherein a stacking area having a diameter larger than that of the groove portion is provided above and below the groove portion, the stacking area provided above the groove portion is an upper stacking area, and the stacking area provided below the groove portion is a lower stacking area, which effectively prevents the gasket from falling off from the groove.

3. The assembly bolt of claim 2, wherein said upper accumulation area is frustoconical and said lower accumulation area is cylindrical.

4. The assembling bolt according to claim 2, wherein said upper and lower stockpiling regions are provided in the same shape, in a truncated cone shape or a cylindrical shape which is vertically symmetrical about the groove.

5. The modular bolt of claim 1 wherein said washer is a two piece cooperating gear wheel anti-slip washer.

6. The jack screw of claim 5, wherein said gear anti-slip washer has a thickness of one piece of 0.7 mm.

7. The jack screw of claim 1, wherein said washer is a flat pad, said flat pad being one or more.

8. The modular bolt of claim 1 wherein the shims are arcuate shims, said arcuate shims being one or more.

9. A jack bolt according to any one of claims 1 to 8, wherein the groove base diameter is 1.5mm, the groove height is 0.5mm and the stacking zone thickness is 0.5 mm.