CN2692399Y

CN2692399Y - Stainless steet self-tapping screw bolt

Info

Publication number: CN2692399Y
Application number: CN 200420006719
Authority: CN
Inventors: 突河·雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-10
Filing date: 2004-03-10
Publication date: 2005-04-13
Anticipated expiration: 2014-03-10

Abstract

The utility model relates to a stainless steel self-tapping screw bolt, comprising a screw rod and a cutting member, wherein, the screw rod is made of the stainless steel material, the rear end integrally forms a head part, and the front end is provided with a polygonal clamp concave groove; the cutting member is made of steel metallic material having harder hardness, the front end forms a cutting end, and the rear end integrally forms a polygonal clamp convex column which can be just plugged into the clamp concave groove equipped on the front end of the screw rod; Accordingly, when the stainless steel screw bolt can self-tap to lock on the metallic body, the cutting member can be taken off after the self-tapping and the locking of the stainless steel screw bolt, which makes the stainless steel screw bolt kept with the stainless operational performance to keep the goodly appearance on use in the following days, the personnel hurt caused by the convex extension of the cutting member can be avoided during the using process in the following days, and the cutting member disassembled can be reused, a stainless steel self-tapping screw bolt which is convenient in use, safe, and cost saving is provided.

Description

The stainless steel tap bolt

Technical field

The utility model relates to a kind of stainless steel tap bolt.

Background technique

When traditional bolt is desired to impose spiral shell and established on metal object, all must on metal object, be drilled with a hole in advance, just can provide bolt to impose spiral shell and establish operation, therefore establish in the operation very inconvenience and waste time and energy at spiral shell by cutting part.

For solving the shortcoming that above-mentioned conventional bolt has, a kind of tap bolt as shown in Figure 1 pursues and is designed, and this tap bolt is the one-body molded head 11 in the rear end of a screw rod 10 mainly, and constitutes in the one-body molded a cutting part 12 of the front end of screw rod 10; Therefore, when desire imposes this tap bolt when being arranged on the metal object, can be drilled with earlier holes on metal object by one-body molded cutting portion 12 at screw rod 10 front ends, tap bolt screw rod 10 thereupon can be located on the metal object by synchronous spiral shell.

Above-mentioned existing tap bolt, though improved the disappearance that conventional bolt had, and provide bolt to be made things convenient for and the time saving and energy saving spiral shell that imposes on metal object is established operation; But present existing tap bolt still has following shortcoming and needs to improve:

1. because cutting portion 12 must have suitable cutting power, and the cutting portion 12 of existing tap bolt is the front end that is shaped in screw rod 10, therefore the screw rod 10 of this tap bolt must be that material is made with the harder rigidity metal of hardness, but the harder rigidity metallic material of all hardness all gets rusty easily at present, so will influence use aesthetic property in the future, and limited to its using scope, used and can't be used in the relatively poor stainless steel bolt of hardness; In other words, at present not with stainless steel make tap bolt.

2. because the cutting portion 12 of existing tap bolt is screw rod 10 front ends that are shaped in tap bolt, therefore will increases screw rod 10 length, and protrude out body surface easily, cause the injury of personnel when in the future using, so will increase the danger on using.

3. because the cutting portion 12 of existing tap bolt is screw rod 10 front ends that are shaped in tap bolt, so this cutting portion 12 and can't reusing, so will increase cost in the use.

Summary of the invention

The purpose of this utility model, promptly be to improve the shortcoming of above-mentioned existing tap bolt institute tool, and provide a kind of tap bolt made from stainless steel, this stainless steel bolt front end is in conjunction with a cutting part spare, making stainless steel bolt be able to self-tapping lock is located on the metal object, and this cutting part can be taken off after the stainless steel bolt self-tapping lock is established, make stainless steel bolt be kept rustless operating characteristic, with the aesthetic property that keeps using in the future, and can avoid protruding out of cutting part and the personnel that cause injure in use in the future, and the cutting part that takes off can be utilized again, and then provide a kind of use more convenient, safe and cost-effective stainless steel tap bolt.

For achieving the above object, the utility model includes screw rod and a cutting part spare; Wherein:

Screw rod is made by a kind of stainless steel, the one-body molded head in its rear end, and its front end is provided with a polygonal clip groove;

Cutting part is made by the rigidity metallic material that a kind of hardness is harder, and its front end forms a cutting end, and its rear end is one-body molded a polygonal clip projection is arranged, and this clip projection can be inserted in the set clip groove of screw front end;

By the formation of above-mentioned parts, stainless steel tap bolt of the present utility model can utilize the cutting part that is inserted in screw front end to be drilled with earlier a hole on metal object, and screw rod can be located on the metal object by synchronous spiral shell thereupon; In addition, when stainless steel tap bolt of the present utility model after spiral shell is located on the metal object, cutting part can be taken off.

Description of drawings

Fig. 1 is the D structure figure of existing tap bolt;

Fig. 2 is that the solid of this case model utility is decomposed tectonic maps;

Fig. 3 is the side-looking planar configuration figure of this case model utility, and is drilled with out earlier the schematic representation of hole on metal object by cutting element;

Fig. 4 is the side-looking planar configuration figure of this case model utility, and spiral shell is located on the metal object, and the schematic representation that cutting part can be taken off.

Among the figure

10 screw rods

11 heads

12 cutting portions

20 screw rods

21 heads

22 clip grooves

30 cutting parts

31 clip projections

40 metal objects

41 holes

Embodiment

Relevant the utility model is technological means and the structure characteristics thereof that achieves the goal and used, existing by in conjunction with Fig. 2 to embodiment shown in Figure 4, be described in detail as follows:

As shown in Figure 2, the utility model includes a screw rod 20 and a cutting part spare 30; Wherein:

Screw rod 20 (consulting shown in Figure 3 simultaneously) is made by a kind of stainless steel, the one-body molded head 21 in its rear end, and its front end is provided with a polygonal clip groove 22.

Cutting part 30 (consulting shown in Figure 3 simultaneously), make by the rigidity metallic material that a kind of hardness is harder, its front end forms a cutting end, and its rear end is one-body molded a polygonal clip projection 31 is arranged, and this clip projection 31 just can be inserted in the set clip groove 22 of screw rod 20 front ends.

Formation by above-mentioned parts, stainless steel tap bolt of the present utility model can utilize the cutting part 30 that is inserted in screw rod 20 front ends to be drilled with earlier a hole 41 (as shown in Figure 3) on metal object 40, and screw rod 20 can be located on the metal object 40 by synchronous spiral shell thereupon; In addition, when stainless steel tap bolt of the present utility model after spiral shell is located on the metal object 40, cutting part 30 can be taken off (as shown in Figure 3).

Therefore, the utility model can reach following advantage in the use:

1. owing to, really can make the relatively poor stainless steel bolt of hardness reach the purpose that the self tapping spiral shell is established and conveniently use by being inserted in the cutting part 30 of screw rod 20 front ends.

Therefore 2. because cutting part 30 is incorporated into screw rod 20 front ends in the plant mode, when screw rod 20 spiral shells are established on the metal object 40 after, cutting part 30 can be taken off, and avoid getting rusty of cutting part 30 to influence in the future use aesthetic property.

Therefore 3. because cutting part 30 is incorporated into screw rod 20 front ends in the plant mode, after screw rod 20 spiral shells are established on the metal object 40, cutting part 30 can be taken off, and be avoided the Security that influence is used in the future that protrudes out of cutting part 30.

Therefore 4. because cutting part 30 is incorporated into screw rod 20 front ends in the plant mode, when screw rod 20 spiral shells are established on the metal object 40 after, cutting part 30 can be taken off, and be reached the purpose of repeated use, reduction user cost.

The above and embodiment shown in the drawings, only being used for describing in detail the utility model is technological means and the structure thereof that achieves the goal and used, can not with qualification scope of the present utility model, all equivalences of being done according to the utility model claim change or modify, and all should belong to the scope that the utility model patent is contained.

Claims

1. a stainless steel tap bolt includes screw rod and a cutting part spare; It is characterized in that:

Screw rod is made by a kind of stainless steel, the one-body molded head in its rear end, and its front end is provided with a clip groove;

Cutting part is made by the harder rigidity metallic material of a kind of hardness, and its front end forms a cutting end, and its rear end is one-body molded a clip projection;

This clip projection can coincide and be inserted in the set clip groove of screw front end, and cutting part can load and unload with screw rod and be connected.

2. stainless steel tap bolt as claimed in claim 1 is characterized in that the set clip groove of this screw front end is a polygon groove.

3. stainless steel tap bolt as claimed in claim 1 is characterized in that the set clip projection of this cutting part spiro rod rear end is a polygon cylinder.