CN201027769Y

CN201027769Y - Check bolt and nut component

Info

Publication number: CN201027769Y
Application number: CNU2007201242287U
Authority: CN
Inventors: 刘胜忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-10
Filing date: 2007-05-10
Publication date: 2008-02-27
Anticipated expiration: 2017-05-10

Abstract

The utility model discloses an anti-loose bolt and nut assembly, which comprises a bolt (3) and a nut (7), wherein, the head end surface of the bolt (3) and the head end surface of the nut (7) are provided with a ratchet; a lining (4) is sheathed on a screw rod arranged between the bolt (3), the nut (7) and a fixed element (6); a pawl spring ring (1) is sheathed on the lining (4) which is sheathed by an unlocking ring (2); the unlocking ring (2) is covered outside the spring ring (1); the upper end surface of the unlocking ring (2) is provided with a through-hole (2a), a pawl (1a) of the spring ring (1) extends out of the through-hole (2a) of the unlocking ring (2) to contact with the ratchet of the head end surface of the bolt (3) and the head end surface of the nut (7). The utility model is characterized in that the utility model has reasonable design and easy execution, etc., and can effectively prevent the loose and fall-off problems on the bolt and the nut under a long time use and avoid the loss to be brought and various accidents.

Description

Chek bolt, nut assembly

Technical field

The utility model relates to a kind of threaded fastener assembly, particularly relates to a kind of bolt and nut that can effectively prevent and produces chek bolt, nut assembly loosening so that come off.

Background technique

As everyone knows, bolt and nut is a kind of fastening piece that is widely used on the devices such as machinery equipment, railway, bridge, household electrical appliances, Aeronautics and Astronautics, steamer, automobile, though common bolt and nut component has advantage simple in structure, easy to use, but also there is easily loosening deficiency, particularly when component that it connected are in the workpiece environment of continuous shaking for a long time, the thing that produces loose or dislocation between the bolt and nut just occurs repeatedly, light then influence the proper functioning of device, heavy then cause major accident, cause heavy losses for people's lives and properties.In view of this, people have thought that thousand and one way solves the problem of bolt and nut loose or dislocation, be the elasticity floor clip and use maximum, but this floor clip prevent that the effect of nut loosening is limited, and being difficult to guarantee also can be as before fastening under long-term vibration environment.

The model utility content

Even technical problem to be solved in the utility model be to provide a kind of also can be firm as usual under the working environment of long-term, high vibration, can not make nut produce chek bolt, the nut assembly of loose or dislocation.

The technical solution of the utility model is as follows: a kind of subassembly of lock bolt, its key is: be provided with ratchet at the bolt head end face, on the bolt light rod between bolt and the fastener, be set with lining, be set with the pawl type elastic ring on this lining, on described lining, be set with and separate lock ring, this is separated lock ring and covers on outside the described elastic ring, have through hole in this upper-end surface of separating lock ring, the ratchet of described elastic ring stretches out the described through hole of separating on the lock ring, clockwise direction towards elastic ring, contact with the ratchet of described bolt head end face, when bolt was tightened rotation toward the clockwise direction, the ratchet of bolt head end face pressed downward to the ratchet of elasticity of extension ring in the through hole, bolt can rotate smoothly, in case after tightening, bolt will stretch in the ratchet of bolt head end face to counterclockwise motion ratchet, and bolt is blocked and can not rotate counterclockwise, bolt can not become flexible so that come off, have only by separating clockwise rotating of lock ring, ratchet is pressed into the described lock ring below of separating, rotating counterclockwise of bolt could be carried out smoothly.

The bottom surface of described pawl type elastic ring is connected with described lining spot welding.On the contact surface of described lining and fastener, be coated with viscose glue.Lining is fixed on the fastener by viscose glue, the pawl type elastic ring is welded on the lining again, make whole fastener, lining and pawl type elastic ring, become as a whole, when bolt is tightened in the above, the clockwise rotating of bolt can not drive elastic ring and rotate together, tighten back elastic ring ratchet bolt firmly blocked, can along rotation.

A kind of nut assembly, its key is: the end face at nut is provided with ratchet, on the screw rod between nut and the fastener, be set with lining, be set with the pawl type elastic ring on this lining, be set with on described lining and separate lock ring, this is separated lock ring and covers on outside the described elastic ring, have through hole in this upper-end surface of separating lock ring, the ratchet of described elastic ring stretches out the described through hole of separating on the lock ring, towards the clockwise direction of elastic ring, contacts with the ratchet of described bolt head end face.When bolt is tightened rotation toward the clockwise direction, the ratchet of bolt head end face presses downward to the ratchet of elasticity of extension ring in the through hole, bolt can rotate smoothly, in case after tightening, bolt will stretch in the ratchet of nut head end to counterclockwise motion ratchet, and nut is blocked and can not rotate counterclockwise, nut can not become flexible so that come off, have only by separating clockwise rotating of lock ring, ratchet is pressed into the described lock ring below of separating, rotating counterclockwise of nut could be carried out smoothly.

The bottom surface of described pawl type elastic ring is connected with described lining spot welding.On the contact surface of described lining and fastener, be coated with viscose glue.Lining is fixed on the fastener by viscose glue, the pawl type elastic ring is welded on the lining again, make whole fastener, lining and pawl type elastic ring, become as a whole, when nut is tightened in the above, the clockwise rotating of nut can not drive elastic ring and rotate together, tighten back elastic ring ratchet bolt firmly blocked, can along rotation.

Beneficial effect: the utlity model has reasonable in design, implement characteristics such as easy, it can effectively prevent long-term down use of working environment of high vibration, loosening so that obscission that bolt and nut produces has been avoided the loss that for this reason brings and all accidents.

Description of drawings

Fig. 1 is the subassembly of lock bolt structural representation;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is a plan view of separating lock ring 2 among Fig. 1;

Fig. 4 is the plan view of Fig. 3;

Fig. 5 is a lining 4 and pawl type elastic ring 1 assembling relationship figure among Fig. 1;

Fig. 6 is the plan view of Fig. 5;

Fig. 7 is the anti-loosen screw nut component structural representation;

Fig. 8 is the structural drawing of nut 7 among Fig. 7.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

Embodiment 1

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, the utility model subassembly of lock bolt, comprise bolt 3, elastic ring 1, separate lock ring 2, lining 4, be provided with ratchet in bolt 3 head end, on the bolt light rod between bolt 3 and the fastener 6, be set with lining 4, be set with pawl type elastic ring 1 on this lining 4, on described lining 4, be set with and separate lock ring 2, this is separated lock ring 2 and covers on outside the described elastic ring 1, have through hole 2a in this upper-end surface of separating lock ring 2, the ratchet of described elastic ring 1 stretches out the described through hole 2a that separates on the lock ring 2, clockwise direction towards elastic ring, contact with the ratchet of described bolt 3 head end, the bottom surface of described pawl type elastic ring 1 is connected with described lining 4 spot welding, applies viscose glue 5 on the contact surface of described lining 4 and fastener 6.

When being screwed into bolt, bolt 3 is tightened rotation toward the clockwise direction, the ratchet of bolt 3 head end presses downward to the ratchet of elasticity of extension ring in the through hole 2a that separates on the lock ring 2, bolt 3 can rotate smoothly, in case after tightening, bolt 3 will stretch in the ratchet of bolt 3 head end to the ratchet 1a of counterclockwise movement flexible ring 1, bolt 3 is blocked and can not rotate counterclockwise, bolt 3 can not become flexible so that come off, have only in the time of need back-outing bolt 3 by separating clockwise rotating of lock ring 2, ratchet 1a is pressed into described lock ring 2 belows of separating, and rotating counterclockwise of bolt 3 could be carried out smoothly, and bolt 3 is back-outed.

Embodiment 2

As Fig. 7, shown in Figure 8, the utility model lock nut 7 assemblies, comprise nut 7, elastic ring 1, separate lock ring 2, lining 4, be provided with ratchet in nut 7 head end, on the nut polished rod between nut 7 and the fastener 6, be set with lining 4, be set with pawl type elastic ring 1 on this lining 4, on described lining 4, be set with and separate lock ring 2, this is separated lock ring 2 and covers on outside the described elastic ring 1, have through hole 2a in this upper-end surface of separating lock ring 2, the ratchet of described elastic ring 1 stretches out the described through hole 2a that separates on the lock ring 2, clockwise direction towards elastic ring, contact with the ratchet of described nut 7 head end, the bottom surface of described pawl type elastic ring 1 is connected with described lining 4 spot welding, applies viscose glue 5 on the contact surface of described lining 4 and fastener 6.

When being screwed into nut, nut 7 is tightened rotation toward the clockwise direction, the ratchet of nut 7 head end presses downward to the ratchet of elasticity of extension ring in the through hole 2a that separates on the lock ring 2, nut 7 can rotate smoothly, in case after tightening, nut 7 will stretch in the ratchet of nut 7 head end to the ratchet 1a of counterclockwise movement flexible ring 1, nut 7 is blocked and can not rotate counterclockwise, nut 7 can not become flexible so that come off, have only in the time of need back-outing nut 7 by separating clockwise rotating of lock ring 2, ratchet 1a is pressed into described lock ring 2 belows of separating, and rotating counterclockwise of nut 7 could be carried out smoothly, and nut 7 is back-outed.

Claims

1. subassembly of lock bolt, comprise bolt (3), it is characterized in that: be provided with ratchet in bolt (3) head end, on the bolt light rod between bolt (3) and the fastener (6), be set with lining (4), be set with pawl type elastic ring (1) on this lining (4), on described lining (4), be set with and separate lock ring (2), this is separated lock ring (2) and covers on outside the described elastic ring (1), have through hole (2a) in this upper-end surface of separating lock ring (2), the ratchet (1a) of described elastic ring (1) stretches out the described through hole of separating on the lock ring (2) (2a), contacts with the ratchet of described bolt (3) head end.

2. subassembly of lock bolt according to claim 1 is characterized in that: the bottom surface of described pawl type elastic ring (1) is connected with described lining (4) spot welding.

3. subassembly of lock bolt according to claim 1 is characterized in that: be coated with viscose glue (5) on the contact surface of described lining (4) and fastener (6).

4. anti-loosen screw nut component, comprise nut (7), it is characterized in that: the end face at nut (7) is provided with ratchet, on the screw rod between nut (7) and the fastener (6), be set with lining (4), be set with pawl type elastic ring (1) on this lining (4), on described lining (4), be set with and separate lock ring (2), this is separated lock ring (2) and covers on outside the described elastic ring (1), have through hole (2a) in this upper-end surface of separating lock ring (2), the ratchet (1a) of described elastic ring (1) stretches out the described through hole of separating on the lock ring (2) (2a), contacts with the ratchet of described nut (7) head end.

5. according to claims 1 or 2 described anti-loosen screw nut components, it is characterized in that: on the contact surface of described lining (4) and fastener (6), be coated with viscose glue (5).