CN222458046U - High fastening stability's locking bolt that moves - Google Patents

Abstract

The utility model relates to an anti-loosening bolt with high tightening stability, comprising a screw and a nut, wherein the screw and the nut are integrally arranged, a threaded portion is arranged on the outer periphery of the screw, a self-locking nut is arranged on the outer periphery of the screw, the self-locking nut can form a threaded fit with the threaded portion, a locking portion is arranged at one end of the self-locking nut, the locking portion is used to apply a radial elastic force to the screw, a receiving groove is arranged at one end of the self-locking nut away from the locking portion, a locking nut is arranged on the outer periphery of the screw, the locking nut can form a threaded fit with the threaded portion, one end of the locking nut extends to the receiving groove, and the other end extends outside the receiving groove as a rotating end. The utility model has the following advantages and effects: it can improve the stability of bolt tightening during long-term use and effectively prevent the bolt from falling off due to loosening.

Description

High fastening stability's locking bolt that moves

Technical Field

The utility model relates to the technical field of bolts, in particular to a locking bolt with high fastening stability.

Background

The bolt generally comprises an upper part and a lower part, wherein the upper part is a nut and is used for screwing or unscrewing the bolt when in use, the lower part is a screw rod, namely a cylinder with threads on the outer surface, and the screw rod is generally matched with the nut when in use, and the bolt is fixed or separated through threaded connection between the nut and the screw rod, so that the bolt is widely applied to the aspects of connection, fixation and the like of mechanical parts.

For example, chinese patent document CN219139604U discloses a backing-preventing bolt, which comprises a fixing section, a connecting section and a nut section in sequence along the axial direction, wherein the nut section is fixed with a backing-preventing ring, the backing-preventing ring is provided with at least one notch, and the notch cooperates with a stop washer to limit the backing-preventing bolt.

In the technical scheme, the notch on the anti-backing bolt retaining ring is matched with the bulge on the stop washer, and the notch is fixed by the bulge so that the anti-backing bolt cannot axially rotate, and the anti-backing bolt is prevented from falling off due to vibration.

However, the present inventors have found that the lock washer is easily affected by external factors to cause problems such as aging during long-term use, thereby affecting the locking effect of the bolt during long-term use.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the anti-loosening bolt with high fastening stability, which can improve the fastening stability of the bolt in the long-term use process and effectively prevent the bolt from falling off due to loosening.

In order to achieve the above purpose, the anti-loosening bolt with high fastening stability comprises a screw rod and a nut, wherein the screw rod and the nut are integrally arranged, a threaded part is arranged on the periphery of the screw rod, a self-locking nut is arranged on the periphery of the screw rod, the self-locking nut can be in threaded fit with the threaded part, a locking part is arranged at one end of the self-locking nut, the locking part is used for applying radial elastic force to the screw rod, a containing groove is arranged at one end, far away from the locking part, of the self-locking nut, a locking nut is arranged on the periphery of the screw rod, the locking nut can be in threaded fit with the threaded part, one end of the locking nut extends to the containing groove, and the other end of the locking nut extends to the outside of the containing groove to serve as a rotating end.

The utility model is further arranged that the threaded portion comprises a forward thread and a reverse thread, which are mutually opposite in direction and mutually engaged.

The utility model is further arranged that the self-locking nut and the locking nut respectively form threaded fit with the forward threads and the reverse threads.

The utility model is further arranged that the self-locking nut and the locking nut respectively form threaded fit with the reverse threads and the forward threads.

The utility model is further arranged to further comprise a lock spring washer, which is located below the nut.

The anti-loosening spring washer is further characterized in that anti-loosening grooves are formed in the upper surface and the lower surface of the anti-loosening spring washer, and the anti-loosening grooves are distributed uniformly along the circumference.

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

Through having set up self-locking nut and lock nut, screw in the screw rod with self-locking nut and lock nut in the lump, screw up and oppression each other through the butt that produces after self-locking nut and lock nut contact each other, can prevent that the screw rod from taking off plays locking effect, compare in rubber washer, because self-locking nut and lock nut generally adopt plastics or metal material to make, can guarantee the stability of self performance in long-term use, so, effectively solved among the prior art and adopted the locking washer to carry out locking, the easy technical problem that influences locking stability because of the ageing of lock washer in long-term use, and then can improve the stability of bolt fastening in the long-term use, effectively prevent that the bolt from taking off because of becoming flexible, and the locking part of self-locking nut one side can be strutted after self-locking nut screw in the screw rod, make the locking part can exert radial elasticity to the screw rod because of deformation, with this further prevent that the screw rod from taking off, in addition, through outwards stretching lock nut one end to the holding tank as the rotating end, with this can be convenient for twist the lock nut.

Drawings

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

Fig. 2 is a schematic diagram of an explosive structure according to the present utility model.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 2, the utility model discloses a locking bolt with high fastening stability, which comprises a screw 1 and a nut 2, wherein the screw 1 and the nut 2 are integrally arranged, the periphery of the screw 1 is provided with a threaded part 3, the periphery of the screw 1 is provided with a self-locking nut 4, the self-locking nut 4 can form threaded fit with the threaded part 3, one end of the self-locking nut 4 is provided with a locking part 41, the locking part 41 is made of elastic material, such as plastic, the locking part 41 is used for applying radial elasticity to the screw 1, one end of the self-locking nut 4, which is far away from the locking part 41, is provided with a containing groove 42, the periphery of the screw 1 is provided with a locking nut 5, the locking nut 5 can form threaded fit with the threaded part 3, one end of the locking nut 5 extends to the containing groove 42, the other end extends outwards to serve as a rotating end 51, after the self-locking nut 4 and the locking nut 5 are contacted with each other, the screw 1 can be prevented from being unscrewed to have the locking effect by butting screwing in and mutual pressing, compared with a rubber gasket, the self-locking nut 4 and the locking nut 5 are generally made of plastic or metal material, the self-locking nut is enabled to be prevented from being unscrewed, the self-locking nut can be further prevented from being unscrewed from the threaded end 1, and can be further expanded to have the elastic elasticity to have the elasticity to be prevented from being used as the screw 1, and the end is further extended to be outwards by the containing groove 1, and can be prevented from being screwed into the threaded end by the nut 1.

In this embodiment, the threaded portion 3 includes a forward thread 31 and a reverse thread 32, the forward thread 31 and the reverse thread 32 are opposite to each other in direction and are engaged with each other, and the bolt moves along the threads after being vibrated, so that the bolt is loosened, and therefore, the self-locking nut 4 and the locking nut 5 are prevented from moving along the direction of the threads by respectively screwing the self-locking nut 4 and the locking nut 5 with the forward thread 31 or screwing the self-locking nut 4 and the locking nut 5 with the reverse thread 32 and the reverse thread 31, so that when being vibrated, the movement trend of the mutual contact of the self-locking nut 4 and the locking nut 5 is generated due to the opposite directions of the threads of the connection of the self-locking nut 4 and the locking nut 5, and friction generated between the two can prevent the movement of the self-locking nut 4 and the locking nut 5 along the directions of the threads, so that the bolt is further prevented from loosening.

In this embodiment, still be equipped with lock spring washer 6 between nut 2 and contact surface, lock spring washer 6 is located the nut 2 below, lock spring washer 6's upper surface and lower surface all are equipped with lock slot 61, lock slot 61 is a plurality of and evenly distributed according to the circumference, consequently after screw rod 1 screw in until nut 2 can extrude lock spring washer 6, lock spring washer 6 can hinder screw rod 1 rotation because of the elasticity that deformation produced, thereby further prevent that the bolt from producing not hard up, consequently through lock nut 2, self-locking nut 4, forward screw thread 31, reverse screw thread 32 and lock spring washer 6 mutually support, can improve the stability of bolt-up by a wide margin, effectively prevent to produce not hard up.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims (6)

1. The utility model provides a locking bolt of high fastening stability, its characterized in that, including screw rod and nut, screw rod and nut integrative setting, the screw rod periphery is equipped with screw thread portion, the screw rod periphery is equipped with self-locking nut, self-locking nut can constitute screw thread fit with screw thread portion, self-locking nut's one end is equipped with locking portion, locking portion is used for applying radial elasticity to the screw rod, self-locking nut is located the one end of keeping away from locking portion and is equipped with the holding tank, the screw rod periphery is equipped with locking nut, locking nut can constitute screw thread fit with screw thread portion, locking nut one end extends to the holding tank, and the other end extends to the holding tank and regard as the rotating-end.

2. The high fastening stability lockbolt of claim 1, wherein the threaded portion comprises forward and reverse threads that are oppositely oriented and intermeshed with each other.

3. The high fastening stability lockbolt of claim 2, wherein the self-locking nut and locknut are threaded with forward and reverse threads, respectively.

4. The high fastening stability lockbolt of claim 2, wherein the locknut and locknut are threaded with reverse threads and forward threads, respectively.

5. The high fastening stability lockbolt of claim 1, further comprising a lockspring washer positioned below the nut.

6. The high fastening stability lockbolt of claim 5, wherein the lockspring washer has a plurality of lockgrooves on both the upper and lower surfaces, the lockgrooves being uniformly distributed circumferentially.