CN2423439Y

CN2423439Y - Check bolt

Info

Publication number: CN2423439Y
Application number: CN 00229995
Authority: CN
Inventors: 李再平
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-25
Filing date: 2000-05-25
Publication date: 2001-03-14
Anticipated expiration: 2010-05-25

Abstract

The utility model relates to an anti-loosing screw bolt. The screw bolt is composed of a screw rod, an anti-loosing washer and a screw cap. The screw rod is provided with a circular arc-shaped groove along the shaft direction of the screw rod, the anti-loosing washer adopts an elastic steel sheet, the inner side of the washer is provided with a convex bolt, the outer side of the washer is cut with 1 to 5 long strips, and the long strips bend along the vertical direction of the washer plane. One end of the bottom surface of the screw cap is evenly provided with a groove in a right triangle shape, the shape of the groove and bending section of the washer are same. The utility model has the advantages of low cost and convenient machining, after the screw bolt is fastened, as long as persons are not purposive to loosen the screw bolt, the screw bolt can not naturally loosens when the screw bolt is in motion or shake, and in a pinch, the thickness of the anti-loosing washer can be increased, after the screw bolt is fastened, and the utility model can not loosen no longer.

Description

A kind of chek bolt

The utility model relates to the coupling of fastening or fixed component, more specifically relates to a kind of chek bolt.

After the bolton of using, when motion, especially under vibrational state, nut can become flexible, even comes off at present.In the prior art, also have in the end of screw rod and make a call to a horizontal hole, add pin, though can prevent the screw cap-falling after loosening like this, but still the deficiency that nut can become flexible when having motion or vibrations.

The purpose of this utility model foot provides a kind of chek bolt that can not become flexible naturally after fastening.

The said chek bolt of the utility model is made up of screw rod, lock washer and nut.Screw rod has the groove of circular arc vertically; Lock washer is a ring, adopt elastic steel sheet, establish the convex bolt in the inboard of packing ring, the shape of convex bolt is identical with the screw rod arc-shaped slot, the convex bolt is slightly littler than the groove of screw rod, make it just in time can put into groove, open along diametric(al) in the outside of packing ring and to cut 1～5 mouth, each incision length be generally packing ring wide 1/5th to 4/5ths, the contrary direction of tightening along circumference towards nut in the inboard of each otch is cut, length is generally 3～15 millimeters, the one end still is connected on the lock washer, with the long strips that cuts, is fulcrum with the limit that is connected in packing ring, along the Vertical direction bending of packing ring plane, generally be 10 degree～40 degree angles with the packing ring plane; Nut bottom surface one end is evenly offered the groove of 8～30 right-angled triangles, and the length of groove hypotenuse, angle and direction all length, angle and the direction with the packing ring curved section are identical.

The said chek bolt of the utility model needing can be used for the various occasions of bolton, its using method is: screw rod passes needs fastening workpiece, the protuberance of lock washer is aimed at the groove of screw rod, be inserted in the screw rod, the curved section of packing ring is towards the nut that will screw in, then nut is had even vee gutter one facing to lock washer, screw in screw rod, tighten and get final product.

The convex bolt of lock washer is put into the groove of screw rod, lock washer just can not rotate, the curved section of lock washer is in the process that nut is tightened, though might be driven plain, but because its use is the elasticity steel, as long as be screwed to the position of nut vee gutter, the curved section of lock washer just can restore, if the curved section of lock washer is not just in time to aim at the leg-of-mutton groove of nut, as long as nut is loosening slightly, the curved section of lock washer just can be aimed at the leg-of-mutton groove of nut, and it is loosening to prevent that nut from continuing, therefore, the loosening distance of nut is less than nut slot number/circle.

The thickness of lock washer is determined according to the diameter of screw rod, generally adopts 0.3～2.0 millimeter, can destroy the curved section of lock washer when unscrewing nut with instrument, and the screw thread that does not damage screw rod and nut is advisable.If with after the bolton, need not play again and become flexible, as long as the thickness of thickening lock washer.

Major advantage of the present utility model is that cost is low, easy to process, after the bolton, has a mind to become flexible so long as not artificial, can not become flexible naturally when motion or vibrations, in case of necessity, increases the thickness of lock washer, will be no longer loosening after the bolton.

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the chek bolt structural representation, and this bolt is made up of screw rod 1, lock washer 2 and nut 3.

Fig. 2 is to be the schematic representation of screw rod 1, has the groove of circular arc along screw axial.

Fig. 3 foot Fig. 2 cooperates schematic representation.

Fig. 4 is the schematic representation of lock washer 2, do not have convex bolt 5 in the inboard of packing ring 2, the shape of convex bolt 5 is identical with screw rod 1 arc-shaped slot 4, and convex bolt 5 is slightly littler than the groove 4 of screw rod 1, makes it just in time can put into groove 4, otch is opened along diametric(al) in the outside at packing ring 2, cut along circumference the inboard of otch, and the one end still is connected on the lock washer 2, with the long strips that cuts, along packing ring 2 plane Vertical direction bendings, constitute the curved section 6 of packing ring 2.

Fig. 5 is the cooperation schematic representation of Fig. 4, and curved section 6 generally is 10 degree～40 degree angles with packing ring 2 planes.

Fig. 6 is the schematic representation of nut 3, and nut 3 bottom surfaces one end is evenly offered the groove 7 of 8～30 right-angled triangles, and length, angle and the direction of groove 7 hypotenuses all length, angle and the direction with packing ring curved section 6 is identical.

Fig. 7 is the cooperation schematic representation of Fig. 6.

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 as can be known, lock washer 2 convex bolts 5 are slightly littler than screw rod 1 arc-shaped slot 4, and shape is identical.With the arc-shaped slot 4 of lock washer 2 convex bolts 5 aligning screw rods 1, its curved section upwards is inserted in the screw rod, and nut 3 flutings one end is screwed on facing to lock washer 2, constitutes bolt.

Claims

1, a kind of chek bolt, it is made up of screw rod (1), lock washer (2) and nut (3), it is characterized in that: screw rod (1) has arc-shaped slot (4) vertically, lock washer (2) adopts elastic steel sheet, establish circular arc convex bolt (5) in the inboard of packing ring (2), open in the outside of packing ring (2) and to cut 1～5 long strips, along packing ring (2) plane Vertical direction bending, nut (3) bottom surface one end is offered 8～30 right-angled triangle grooves (7).

2, according to the said a kind of chek bolt of claim 1, it is characterized in that: said lock washer (2) is a ring, and its curved section and packing ring (2) plane is 10 degree～40 degree angles.