CN220980086U - Fastener anti-loosening structure - Google Patents

Abstract

The utility model discloses a fastener anti-loosening structure which comprises a double-threaded screw, wherein a first anti-loosening screw cap is arranged on the double-threaded screw in a threaded manner, a fixed screw cap is arranged on one side of the double-threaded screw and positioned on one side of the first anti-loosening screw cap in a threaded manner, a limiting groove is formed in the first anti-loosening screw cap, a limiting bolt is slidably arranged in the limiting groove, a backing ring is fixedly arranged on the fixed screw cap, a limiting hole is formed below the backing ring, and the limiting hole is matched with the limiting bolt. Through when fixation nut, first jam nut laminating each other together, spacing bolt can insert spacing downthehole portion to link together fixation nut and first jam nut, because first jam nut is opposite with the inside screw thread direction of fixation nut, thereby first jam nut wants to rotate backward with fixation nut, needs different directions, thereby effectually reaches the effect of loosening, and effectually prevents that this fastener is not hard up.

Description

Fastener anti-loosening structure

Technical Field

The utility model relates to an anti-loosening structure, in particular to a fastener anti-loosening structure.

Background

The screw nut is used as a conventional detachable fastening part and is widely applied to mechanical equipment, power and mechanical components in various fields; in the environment of strong vibration or irregular strong fluctuation, the phenomenon of loosening and falling of the screw can occur, and in order to prevent the loosening of the nut, a locking structure is designed.

The common bolt anti-loosening structure is provided with double threads matched with double nuts, and nuts in different rotation directions are mutually abutted to achieve the anti-loosening purpose, but in the actual use process, the nuts still have the problem of loosening possibility after long-time vibration.

Disclosure of utility model

The utility model aims to provide a fastener anti-loosening structure so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fastener locking structure, includes the double-thread screw rod, threaded mounting has first jam nut on the double-thread screw rod, and be located first jam nut one side threaded mounting has fixing nut on the double-thread screw rod, set up spacing recess in the first jam nut, sliding mounting has spacing bolt in the spacing recess, fixed mounting has the backing ring on the fixing nut, spacing hole has been seted up below the backing ring, spacing hole and spacing bolt mutually support.

Preferably, a storage groove is formed below the first lock nut, prying holes are formed in the periphery of the first lock nut, and the prying holes are communicated with the inside of the storage groove.

Preferably, the limiting bolt is sleeved with a return spring, a spring pad is fixedly arranged on the limiting bolt, and the return spring is matched with the spring pad.

Preferably, a connecting ring is fixedly arranged at the lower end of the limiting bolt, and the connecting ring is matched with the storage groove.

Preferably, the first locknut and the fixing nut have opposite inner wall screw threads.

Compared with the prior art, the utility model has the beneficial effects that:

1. When fixation nut, first jam nut laminating each other are in the same place, spacing bolt can insert spacing downthehole portion to link together fixation nut and first jam nut, because first jam nut is opposite with the inside screw thread direction of fixation nut, thereby first jam nut wants to rotate backward with fixation nut, needs different directions, thereby effectually reaches the effect of loosening, and effectually prevents that this fastener is not hard up.

2. The connecting ring is mutually matched with the storage tank, so that the connecting ring is stored in the storage tank, the situation that the connecting ring is pulled at will to move a limiting bolt is avoided, an irrelevant person is prevented from unscrewing the fixing nut at will, and meanwhile, the situation that other workpieces are interfered is avoided, and the other workpieces are installed below the first anti-loosening nut is avoided.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of FIG. 2A in accordance with the present utility model;

FIG. 4 is an exploded view of a first cage nut of the present utility model;

Fig. 5 is an exploded view of the present utility model.

In the figure: 1. a double-flighted screw; 2. a first locknut; 201. a storage tank; 202. prying holes; 3. a fixed screw cap; 301. a backing ring; 302. a limiting hole; 4. a limit groove; 401. a limit bolt; 402. a return spring; 403. a spring pad; 404. and a connecting ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a fastener locking structure, includes double-thread screw 1, installs first locknut 2 on the double-thread screw 1, and on and lie in first locknut 2 one side screw thread installation of double-thread screw 1 has fixed nut 3, has seted up spacing recess 4 in the first locknut 2, and slidable mounting has spacing bolt 401 in spacing recess 4, fixed mounting has backing ring 301 on the fixed nut 3, has seted up spacing hole 302 below the backing ring 301, spacing hole 302 and spacing bolt 401 mutually support.

In this embodiment, through spacing bolt 401 and spacing hole 302 mutually supporting, when fixation nut 3, first locknut 2 laminating each other together, spacing bolt 401 can insert spacing hole 302 inside, thereby link together fixation nut 3 and first locknut 2, make fixation nut 3 and first locknut 2 unable rotation in opposite direction, fixation nut 3 becomes flexible needs to rotate to the end, it can drive first locknut 2 rotation to conduct through spacing bolt 401, first locknut 2 and 3 equidirectional rotations of fixation nut, first locknut 2 can be moved to double-screw rod 1 tip, thereby can support fixation nut 3, thereby effectively prevent that fixation nut 3 is not hard up.

In order to achieve the purpose of pushing the limiting plug pins 401 into the limiting holes 302, the device is realized by adopting the following technical scheme: the storage groove 201 is formed below the first lock nut 2, prying holes 202 are formed in the periphery of the first lock nut 2, the prying holes 202 are communicated with the inside of the storage groove 201, a return spring 402 is sleeved on a limiting plug 401, a spring pad 403 is fixedly arranged on the limiting plug 401, and the return spring 402 is matched with the spring pad 403.

Through the cooperation of the return spring 402 and the spring pad 403, the return spring 402 can provide a certain thrust force for the spring pad 403, and the spring pad 403 receives the thrust force to drive the limiting bolt 401 to be clamped into the limiting hole 302, so that the fixing nut 3 and the first locknut 2 are connected together.

Wherein, in order to realize avoiding the purpose of random rotatory first lock nut 2, spacing recess 4, this device adopts following technical scheme to realize: a connecting ring 404 is fixedly arranged at the lower end of the limiting bolt 401, the connecting ring 404 is matched with the storage tank 201, and the directions of threads on the inner walls of the first locknut 2 and the fixing nut 3 are opposite.

Through the cooperation of the connecting ring 404 and the storage tank 201, the connecting ring 404 can be stored in the storage tank 201, the situation that the connecting ring 404 is pulled at will to drive the limiting bolt 401 to move is avoided, a special tool is needed to be used, the inside of the storage tank 201 is clamped into through the prying hole 202, the connecting ring 404 is driven to move, the connecting ring 404 moves to drive the limiting bolt 401 to move out of the limiting hole 302, the first anti-loosening nut 2 and the limiting groove 4 can be independently rotated at the moment, and the situation that external personnel unscrew the fixing nut 3 at will is avoided.

The working principle and the using flow of the utility model are as follows: when the device is used, the device is required to be placed at a proper position, the fixing nut 3 is firstly arranged on the double-threaded screw 1, the workpiece is fastened together by the fixing nut 3, then the first locknut 2 is screwed on, special tools are required to be used when the device rotates, the connecting ring 404 is clamped to enable the limiting bolt 401 to be positioned in the limiting groove 4, when the first locknut 2 is close to the fixing nut 3, the connecting ring 404 is loosened to push the limiting bolt 401 into the limiting hole 302 under the pushing of the return spring 402, so that the fixing nut 3 is connected with the first locknut 2, and the first locknut 2 and the fixing nut 3 want to rotate backwards due to the opposite directions of the internal threads of the first locknut 2 and the fixing nut 3, and different directions are required, so that the loosening effect is effectively achieved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a fastener locking structure, includes double-threaded screw rod (1), its characterized in that: the novel anti-loosening device is characterized in that a first anti-loosening screw cap (2) is arranged on the double-threaded screw rod (1) in a threaded manner, a fixing screw cap (3) is arranged on one side of the double-threaded screw rod (1) in a threaded manner, a limiting groove (4) is formed in the first anti-loosening screw cap (2), a limiting bolt (401) is arranged in the limiting groove (4) in a sliding manner, a backing ring (301) is fixedly arranged on the fixing screw cap (3), a limiting hole (302) is formed in the lower surface of the backing ring (301), and the limiting hole (302) is matched with the limiting bolt (401).

2. The fastener loosening prevention structure according to claim 1, wherein: a storage groove (201) is formed below the first lock nut (2), prying holes (202) are formed in the periphery of the first lock nut (2), and the prying holes (202) are communicated with the inside of the storage groove (201).

3. The fastener loosening prevention structure according to claim 1, wherein: the limiting bolt (401) is sleeved with a return spring (402), a spring pad (403) is fixedly arranged on the limiting bolt (401), and the return spring (402) is matched with the spring pad (403).

4. The fastener loosening prevention structure according to claim 1, wherein: a connecting ring (404) is fixedly arranged at the lower end of the limiting bolt (401), and the connecting ring (404) is matched with the storage tank (201).

5. The fastener loosening prevention structure according to claim 1, wherein: the thread directions of the inner walls of the first locknut (2) and the fixed nut (3) are opposite.