CN2934708Y

CN2934708Y - Contact face structure of bolt, screw cap and gasket

Info

Publication number: CN2934708Y
Application number: CN 200620061128
Authority: CN
Inventors: 林倍庆; 林裕森
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-26
Filing date: 2006-06-26
Publication date: 2007-08-15
Anticipated expiration: 2016-06-26

Abstract

The utility model discloses a bolt/nut/gasket contact-face structure. The bolt has a cap provided with a corresponding first face and a second face, and the second face is a rugged concavo convex surface; the nut has a corresponding first face and a second face, and both of the faces are rugged concavo convex surfaces; the gasket has a corresponding first face and a second face, and both of the faces are rugged concavo convex surfaces. Due to rugged surfaces of the bolt, nut and gasket, the bolt is not easy to get loose naturally under fastened state.

Description

The surface of contact structure of bolt, nut and pad

Technical field

The utility model is the surface of contact structure about a kind of bolt, nut and pad.

Background technique

Combination between parts is often passed workpiece with bolt, and become flexible preventing the screw section that is tightened in bolt with nut, or add the screw that screws in workpiece behind the packing ring again with bolt, be in the state of long-term vibration as workpiece, can be because the vibrations of workpiece cause slope of thread to slide, cause bolt or nut to produce rotation and then get loose.

As M416501 number " subassembly of lock bolt structure improvement " patent case of TaiWan, China, it is by bolt, packing ring, nut is formed, by spiral shell when solid with bolt, packing ring, workpiece, workpiece, the arrangement mode of packing ring and nut, utilization is when locking, bolt and the mutual corresponding interlock of packing ring, and nut is used for preventing that with the workpiece buckle workpiece is lax with the sphenoid surface and the packing ring tip of the mutual corresponding interlock of packing ring, utilize above-mentioned structure, can be after the integral body locking, bolt head helical teeth and the packing ring helical teeth generation reaction force that interlocks, stop bolt to become flexible because of vibrations produce rotation, so can reach anti-loose effect,, become flexible to stop the bolt rotation though can produce reverse drag effect power precisely because the packing ring helical teeth belongs to unidirectional wedge-shaped design, but meet when need unclamp bolt with the dismounting workpiece, above-mentioned reverse resistance can make unclamp bolt operation extremely difficulty carry out.

The model utility content

The purpose of this utility model provides the surface of contact structure of a kind of bolt, nut and pad, with the easy problem that got loose naturally of solution bolt, but the normal loose ON operation of unlikely excessive obstruction bolt.

For achieving the above object, solution of the present utility model is: a kind of bolt has a cap body and be provided with relative first and second, and cap body second face has extended a body of rod, be provided with screw thread in the body of rod, wherein second face of cap body at least the part be the roughened surface of concavo-convex variation.

The roughened surface of described nuts body is radial flute profile decorative pattern.

The roughened surface of described nuts body is that embossing is shaped.

A kind of nut has a screw in its nut, and this nut has relative first and second, wherein first of nut with second face at least the part be the roughened surface of concavo-convex variation.

The roughened surface of described nut is radial flute profile decorative pattern.

The roughened surface of described nut is embossing.

A kind of pad is provided with a perforation in its pad, and this pad has relative first and second, first of its Intermediate gasket with second face at least the part be the roughened surface of concavo-convex variation.

The roughened surface of described pad is radial flute profile decorative pattern.

The roughened surface of described pad is embossing.

After adopting such scheme, utilize coarse surface of contact to use and make bolt after spiral shell is solid, be difficult for getting loose.Advantage of the present utility model is:

1, the roughened surface of the concavo-convex variation of bolt has bigger friction, can effectively prevent bolt getting loose naturally under the non-painstakingly application of force.

When 2, unclamping bolt, roughened surface is unlikely to cause great resistance, still can unclamp bolt under the big application of force.

3, without phase interlock buckle, each concavo-convex variation roughened surface promptly has friction.

Description of drawings

Fig. 1 is the utility model first embodiment's a exploded view;

Fig. 2 is the utility model first embodiment's a assembled sectional view;

Fig. 3 is the utility model second embodiment's a exploded view.

The primary clustering symbol description

12 first 13 second 14 bodies of rod, 15 screw threads of 1 bolt, 11 cap bodies

22 first 23 second of 2 pads, 21 perforation

32 first 33 second of 3 nuts, 31 screws

Second of first A2 of A workpiece A1

Second 14A body of rod of 1A bolt 11A cap first 13A of body 12A 15A screw thread

Second of first 23A of 2A pad 21A perforation 22A

Second of first 33A of 3A nut 31A screw 32A

Embodiment

At first, see also Fig. 1, first embodiment includes bolt 1, pad 2 and nut 3, wherein:

Bolt 1 has a cap body 11 and is provided with relative first 12 and second 13, and 11 second 13 of cap bodies have extended a body of rod 14, is provided with screw thread 15 in the body of rod 14, and second 13 of cap body 11 is the roughened surface of radial flute profile decorative pattern.

Pad 2, its pad 2 centers are provided with a perforation 21, and have relative first 22 and second 23, and first 22 and second 23 of pad is the roughened surface of radial flute profile decorative pattern.

Nut 3, its center have a screw 31, and this nut 3 has relative first 32 and second 33, and first 32 and second 33 of nut 3 is the roughened surface of radial flute profile decorative pattern.

During use, as shown in Figure 2, the perforation 21 of being inserted in the pad 2 when bolt 1 is screwed among the workpiece A, the roughened surface of the radial flute profile decorative pattern on first 22 of the roughened surface of the radial flute profile decorative pattern on 11 second 13 of bolt 1 its cap bodies and pad 2 fits, and second 23 first A1 with workpiece A on the pad 2 fits, and the body of rod 14 of bolt 1 is piercing in workpiece A, be screwed into the screw thread 15 of the body of rod 14 of bolt 1 again with the screw 31 of nut 3, make second A2 of the roughened surface applying workpiece A of 3 second 33 its radial flute profile decorative patterns of nut, utilize the big frictional force of its each coarse surface of contact to make bolt 1 after spiral shell is solid, be difficult for nature and get loose.

Again, second embodiment of the present utility model, as shown in Figure 3, bolt 1A, have a cap body 11A and be provided with relative first 12A and second 13A, and second 13A of cap body 11A extended a body of rod 14A, be provided with screw thread 15A in body of rod 14A, and second 13A of cap body 11A is embossing shaping roughened surface; Pad 2A is provided with a perforation 21A, and has relative first 22A and second 23A among its pad 2A, first 22A and second 23A of pad 2A are the roughened surface that embossing is shaped; Nut 3A, its center has a screw 31A, and this nut 3A has relative first 32A and second 33A, first 32A and second roughened surface that 33A is the embossing shaping of nut 3A.

In addition to the implementation, other such as:

1, screw threaded (without packing ring and nut) in the screw of workpiece only to have the aforementioned crude exasperate.

2, cooperate packing ring to be screwed together in the screw of workpiece (without nut) with bolt with aforementioned crude exasperate with aforementioned crude exasperate.

3, cooperate nut to be screwed together in the circular hole (without packing ring) of workpiece with bolt with aforementioned crude exasperate with aforementioned crude exasperate.

Be all the feasible embodiment of the utility model.

Claims

1, a kind of bolt has a cap body and is provided with relative first and second, and cap body second face extended a body of rod, is provided with screw thread in the body of rod, it is characterized in that: second face of cap body is local at least to be the roughened surface of concavo-convex variation.

2, bolt as claimed in claim 1 is characterized in that: the roughened surface of cap body is radial flute profile decorative pattern.

3, bolt as claimed in claim 1 is characterized in that: the roughened surface of cap body is that embossing is shaped.

4, a kind of nut has a screw in its nut, and this nut has relative first and second, it is characterized in that: first of nut is the roughened surface of concavo-convex variation with second face is local at least.

5, nut as claimed in claim 4 is characterized in that: the roughened surface of nut is radial flute profile decorative pattern.

6, nut as claimed in claim 4 is characterized in that: the roughened surface of nut is embossing.

7, a kind of pad is provided with a perforation in its pad, and this pad has relative first and second, it is characterized in that: first of pad is the roughened surface of concavo-convex variation with second face is local at least.

8, pad as claimed in claim 7 is characterized in that: the roughened surface of pad is radial flute profile decorative pattern.

9, pad as claimed in claim 7 is characterized in that: the roughened surface of pad is embossing.