CN205918742U

CN205918742U - Two packing ring formula hexagon head bolt

Info

Publication number: CN205918742U
Application number: CN201620704965.3U
Authority: CN
Inventors: 包正芳
Original assignee: Changshu City Constance Force Securing Member Co Ltd
Current assignee: Changshu City Constance Force Securing Member Co Ltd
Priority date: 2016-07-06
Filing date: 2016-07-06
Publication date: 2017-02-01
Anticipated expiration: 2026-07-06

Abstract

The utility model discloses a two packing ring formula hexagon head bolt, include: spiral shell head and screw rod, be equipped with thread end and smooth end on the screw rod, the surface of thread end is seted up threadedly, smoothly serve, be close to spiral shell head department is equipped with conical spring washer, smoothly serve, be close to thread end department is equipped with the plain washer, conical spring washer includes: opening and conical body, the outer terminal surface of open -ended with contained angle note between the outer inclined plane of conical body is alpha, and alpha's angle scope is 4~6, through above -mentioned mode, the utility model discloses can protect the bolt whole, prevent that the bolt from receiving the damage owing to strength is too big, can also prevent simultaneously to take place to become flexible after the screw bolt and nut from connecting, improve the fastening nature of bolt.

Description

A kind of pair of washer type hexagon-headed bolt

Technical field

This utility model is related to a kind of bolt, particularly to a kind of pair of washer type hexagon-headed bolt.

Background technology

With scientific and technical continuous improvement, bolt is extensively subject to each row each as one of accessory requisite in securing member Industry is favored, and its demand is greatly improved, and the quality of bolt to be weighed mostly by bolt in the market with its intensity, and bolt is in reality Border all carries out protective effect using a packing ring during using between bolt and caught workpiece, generally based on plain washer, And such way, not only the protection to bolt and caught workpiece is less, and locking kinetic force is poor.

Utility model content

This utility model, mainly solving the technical problems that providing a kind of pair of washer type hexagon-headed bolt, can protect bolt Overall, prevent bolt to be damaged because strength is excessive, can also prevent screw bolt and nut from occurring after connecting to loosen simultaneously, improve spiral shell The tightness of bolt.

For solving above-mentioned technical problem, the technical scheme that this utility model adopts is: provides a kind of pair of washer type six Hex bolt includes: screw head and screw rod, and described screw rod is provided with the end of thread and smooth end, and the outer surface of the described end of thread offers Screw thread, on described smooth end, is provided with taper elastic washer at described screw head, on described smooth end, near the described end of thread Place is provided with plain washer；

Described taper elastic washer includes: opening and bullet, the outer face of described opening and described bullet outer tiltedly Angle between face is designated as α, and the angular range of α is 4 ~ 6 °.

In one preferred embodiment of this utility model, described screw head is turret head flange face screw head.

In one preferred embodiment of this utility model, the material of described taper elastic washer is spring steel.

In one preferred embodiment of this utility model, the maximum gauge of described taper elastic washer and described plain washer is not Exceed the length at described smooth end, prevent packing ring damaged screw, thus reducing the tightness of bolt.

The beneficial effects of the utility model are:

(1), this utility model, by the way of adding plain washer, is prevented from defective work piece and spiral shell when bolt and nut is tightened The surface of bolt；

(2), this utility model, by the way of adding taper elastic washer, is prevented from caught workpiece and beats or shake Shi Fasheng loosens；

(3), by the way of with reference to plain washer and taper elastic washer, both can guarantee that caught workpiece and bolt itself not by Damage moreover it is possible to overall fastening effect is greatly improved.

Brief description

Fig. 1 is this utility model structural representation in a preferred embodiment；

Fig. 2 is the structural representation of the taper elastic washer shown in Fig. 1；

In accompanying drawing, the labelling of each part is as follows: 1, screw head, and 2, screw rod, 3, plain washer, 4, taper elastic washer, 21, screw thread End, 22, smooth end, 23, screw thread, 41, opening, 42, bullet.

Specific embodiment

Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model Can be easier to be readily appreciated by one skilled in the art with feature, thus make apparent clear and definite to protection domain of the present utility model Define.

Refer to Fig. 1, this utility model embodiment includes:

A kind of pair of washer type hexagon-headed bolt, comprising: screw head 1 and screw rod 2, described screw rod is provided with the end of thread 21 and smooth End 22, the outer surface of the described end of thread 21 offers screw thread 23, on described smooth end 22, is provided with taper at described screw head 1 Elastic washer 4, on described smooth end 22, is provided with plain washer 3 at the described end of thread 21；

As shown in Fig. 2 described taper elastic washer 4 includes: opening 41 and bullet 42, the outer face of described opening 41 and Angle between the outer inclined-plane of described bullet 42 is designated as α, and the angular range of α is 4 ~ 6 °, for controlling taper elastic washer 4 Bending amplitude, prevents the amplitude of taper elastic washer 4 bending excessive, and leads to taper elastic washer 4 to damage.

Wherein, described screw head 1 is turret head flange face screw head；The material of described taper elastic washer 4 is spring steel；Described The maximum gauge of taper elastic washer 4 and described plain washer 3 is less than the length at described smooth end 22, prevents packing ring from damaging spiral shell Stricture of vagina, thus reduce the tightness of bolt.

Further illustrate, this utility model discloses a kind of pair of washer type hexagon-headed bolt, its main operation principle is: First screw rod 2 is inserted the screw thread in the hole of caught workpiece, subsequently the end of thread 21 in screw rod 2 is screwed using nut, when flat After packing ring 3 contact caught workpiece, taper elastic washer 4 is gradually driven plain along the axial direction at smooth end 22, when this cone shaped elastic pad After circle 4 is driven plain completely, caught workpiece is clamped completely by the double washer type hexagon-headed bolt of this utility model.

The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every The equivalent structure made using this utility model description and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in Other related technical fields, are all included in the same manner in scope of patent protection of the present utility model.

Claims

1. a kind of pair of washer type hexagon-headed bolt is it is characterised in that include: screw head and screw rod, described screw rod is provided with the end of thread With smooth end, the outer surface of the described end of thread offers screw thread, on described smooth end, is provided with cone shaped elastic at described screw head Packing ring, on described smooth end, is provided with plain washer at the described end of thread；

Described taper elastic washer includes: opening and bullet, the outer inclined-plane of the outer face of described opening and described bullet it Between angle be designated as α, the angular range of α is 4 ~ 6 °.

2. according to claim 1 pair of washer type hexagon-headed bolt is it is characterised in that described screw head is turret head flange face Screw head.

3. according to claim 1 pair of washer type hexagon-headed bolt is it is characterised in that the material of described taper elastic washer For spring steel.

4. according to claim 1 pair of washer type hexagon-headed bolt is it is characterised in that described taper elastic washer and described The maximum gauge of plain washer is less than the length at described smooth end.