CN2658460Y

CN2658460Y - Lock washer

Info

Publication number: CN2658460Y
Application number: CN 03270532
Authority: CN
Inventors: 付智国; 任兴堂; 杨广英; 贾志洋
Original assignee: Individual
Current assignee: Yang Weijun; Zhang Yuhan
Priority date: 2003-08-13
Filing date: 2003-08-13
Publication date: 2004-11-24
Anticipated expiration: 2013-08-13

Abstract

The utility model relates to a locking washer consisting of a ring body and a through hole. An outer circle of the ring body is corresponded to the outer diameter of a bolt head or a nut. A side of the outer circle of the ring body is provided with a plurality of bar-type bendable locating plates. Each bendable locating plate is 1 mm-4 mm in the thickness. When in use, firstly the ring body is covered on the bolt, then the nut is assembled and tightly screwed, and then 6 side surfaces of the nut are adjusted when the nut is eventually screwed, finally the bar-type bendable locating plates are bent upwards in order to closely and respectively contact with two side surfaces of a connecting piece. When the bolt and the nut is prone to produce a relative movement under the external vibration, the rigidness of the bendable locating plate of the locking washer stops the relative movement between the bolt and the nut. The utility model intends to provide a locking washer with the advantages of a reliable locking performance, and easy production, a lower manufacturing cost and a convenient use.

Description

Lock washer

Technical field

The utility model relates to a kind of lock washer.

Background technique

In the China Railway system, having what lean between many members is that screw pair is connected and fixed, common screw pair connection is made of screw bolt and nut, but because the member of the railway system can be subjected to continuous oscillating action when work, cause between nut in the screw pair and the bolt usually loosening, to such an extent as to cause nut to come off, bring great hidden danger for the traffic safety of rail transportation system.Once adopted locking measures such as special nut in the past, but poor effect.

The model utility content

It is reliable that the purpose of this utility model provides a kind of anti-loosening property, is easy to processing, and cost is low, lock washer easy to use.

Lock washer of the present utility model comprises circle body and through hole, and the external diameter of the cylindrical of described circle body and bolt head or nut is corresponding, and the cylindrical side of described circle body has the bent positioning plate of a plurality of bar shapeds, and the thickness of each bent positioning plate is 1mm～4mm.

Lock washer of the present utility model, wherein each two side of described bent positioning plate and described circle body connection are respectively equipped with groove, and the quantity of described bent positioning plate is 4～6.

Lock washer of the present utility model, the quantity of wherein said bent positioning plate are 4, and become 90 ° of symmetrical distributions.

Lock washer of the present utility model, wherein said circle body and bent positioning plate adopt Austenitic Stainless Steel to make.

Lock washer of the present utility model has the following advantages:

1, design is ingenious: broken through the limitation that nut anti-looseness can only be tried every possible means on this body structure of screw pair, the ingenious stability of utilizing screw pair institute connector element, member and screw pair are connected as a single entity with check washer, as long as not artificial destruction of pad, nut is loosening never.

2, novel structure practicality: because the nut external form mostly is hexagonal shaped greatly, this check washer adopts four toothings, guarantees nut in any position, and it is to overlap with a face of nut that pad has a tooth at least, can guarantee that like this Tightening moment of nut does not change.

3, anti-loosening property is good: locking test shows that owing to adopted the mode of mechanical connection, it is forever locking to adopt this check washer to accomplish.

4, easy for installation: this check washer is easy for installation, does not need special equipment, can finish installation with instruments such as common pliers, screwdrivers, if use special tool, it will be simpler using.

5, overall cost is low: the originally normal locking form that adopts is that plain washer adds spring washer, if use this check washer, can replace above two packing rings, and cost will reduce.

Below in conjunction with accompanying drawing lock washer of the present utility model is described in further detail.

Description of drawings

Fig. 1 is the plan view of the structural representation of lock washer of the present utility model;

Fig. 2 is in the structural representation of user mode for lock washer of the present utility model;

Fig. 3 is the plan view of Fig. 2.

Embodiment

By Fig. 1, Fig. 2 and Fig. 3 as can be seen, lock washer of the present utility model, comprise circle body 1 and through hole 2, the external diameter of the cylindrical of circle body 1 and bolt head or nut is corresponding, the cylindrical side of circle body 1 has the bent positioning plate 3 of 4 bar shapeds, and becoming 90 ° of symmetrical distributions, the quantity of bent positioning plate 3 also can be 4～6.The thickness of each bent positioning plate 3 is 2mm, and its thickness also can be 1mm～4mm.

Be respectively equipped with groove 4 at 3 two sides of each bent positioning plate and circle body 1 connection, groove 4 is for the ease of from being provided with groove 4 with 3 bendings of bent positioning plate, makes on its side that is attached to nut or the adjacent component.

Circle body 1 and bent positioning plate 3 adopt Austenitic Stainless Steel to make.The employing Austenitic Stainless Steel is made, and has the high characteristics of corrosion protection, intensity and toughness, is highly suitable for so open-air working environment such as the railway system.

Lock washer of the present utility model in use, can earlier circle body 1 cover be installed on the bolt 7, refill and fastening nut 5, tighten to when last, adjust six sides of nut 5, make that wherein two sides are relative with the plate face of the bent positioning plate 3 of 2 bar shapeds, upwards bent the bent positioning plate 3 of 2 bar shapeds then, it is pasted mutually with two sides of nut 5 respectively, bent positioning plate 3 with other 2 bar shapeds is folded into respectively on the surface of connected piece 6 again, and it is pasted mutually with two sides of connected piece 6 respectively.When bolt 7 was tending towards producing relative movement with nut 5 because extraneous oscillating action, the rigidity of the bent positioning plate 3 of lock washer will stop bolt 7 and nut 5 to produce relative movement.

Embodiment recited above only is the description that preferred implementation of the present utility model is carried out; be not that design of the present utility model and scope are limited; under the prerequisite that does not break away from the utility model design philosophy; common engineers and technicians make the technical solution of the utility model in related domain various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Claims

1. lock washer, comprise circle body (1) and through hole (2), it is characterized in that: the cylindrical of described circle body (1) is corresponding with the external diameter of bolt head or nut, the cylindrical side of described circle body (1) has the bent positioning plate (3) of a plurality of bar shapeds, and the thickness of each bent positioning plate (3) is 1mm～4mm.

2. lock washer according to claim 1 is characterized in that: each described (3) two side of bent positioning plate and described circle body (1) connection are respectively equipped with groove (4), and the quantity of described bent positioning plate (3) is 4～6.

3. lock washer according to claim 2 is characterized in that: the quantity of described bent positioning plate (3) is 4, and becomes 90 ° of symmetrical distributions.

4. lock washer according to claim 3 is characterized in that: described circle body (1) and bent positioning plate (3) adopt Austenitic Stainless Steel to make.