CN220415974U

CN220415974U - Lock bolt assembly

Info

Publication number: CN220415974U
Application number: CN202322147060.3U
Authority: CN
Inventors: 涂隆锋
Original assignee: Wenzhou Huahan Automobile Fastener Co ltd
Current assignee: Wenzhou Huahan Automobile Fastener Co ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-01-30
Anticipated expiration: 2033-08-10

Abstract

The utility model provides a check bolt assembly, which comprises a bolt and a nut, wherein the bolt comprises a first screw rod and a second screw rod, the diameter of the first screw rod is larger than that of the second screw rod, a forward thread is arranged on the first screw rod, a reverse thread is arranged on the second screw rod, a fastening nut is connected with the first screw rod in a threaded manner, the second screw rod is connected with the check nut in a threaded manner, and a check piece for connecting the fastening nut and the check nut is arranged between the fastening nut and the check nut. The bolts are connected with the lock nuts screwed in the forward direction and the lock nuts screwed in the reverse direction, so that the looseness of the lock nuts can be blocked by the lock nuts, and the anti-loosening effect is achieved.

Description

Lock bolt assembly

Technical Field

The utility model relates to the technical field of hardware fasteners, in particular to a lockbolt assembly.

Background

The bolt and the nut cooperate to carry out fastening connection to two parts, set up the connecting hole on two parts respectively, and the bolt wears out in the connecting hole on two parts, and the nut is connected at the tip of bolt and offsets with standing the part and form fastening connection, but, receives vibrations influence, and the nut appears becoming flexible easily.

A double nut self-locking lockbolt is disclosed in the patent CN202123442531.0, wherein the two nuts are made to form a self-locking structure by the action of force formed between the two nuts, and one nut is blocked by the other nut when the other nut is rotated. However, when the vibration is large, the two nuts can rotate simultaneously, and at this time, self-locking cannot be realized, and the nuts are loosened.

Disclosure of Invention

Aiming at the problems pointed out in the background art, the utility model provides a double-nut lockbolt assembly with better locking effect.

The technical scheme of the utility model is realized as follows:

the utility model provides a lockbolt subassembly, includes bolt and nut, the bolt include first screw rod and second screw rod, the diameter of first screw rod is greater than the diameter of second screw rod, is equipped with forward screw thread on the first screw rod, is equipped with reverse screw thread on the second screw rod, threaded connection has fastening nut on the first screw rod, threaded connection has fastening nut on the second screw rod, is equipped with the locking piece of connecting both between fastening nut and the fastening nut.

The utility model further provides that the anti-loose piece is a spring, the spring is sleeved on the first screw rod and the second screw rod, and two ends of the spring are respectively propped against the fastening nut and the anti-loose nut.

The locking piece is a locking screw, a threaded hole is formed in the locking nut, a positioning groove corresponding to the threaded hole is formed in the fastening nut, and the locking screw is connected in the threaded hole and the positioning groove.

The utility model further provides that the end part of the locking screw is of a conical structure.

The utility model further provides that the positioning groove is a blind hole arranged on the fastening nut, and the diameter of the blind hole is equal to the diameter of the screw rod of the locking screw.

The utility model further provides that the fastening nut and the locknut are hexagonal nuts, and the outer diameters of the fastening nut and the locknut are equal.

By adopting the technical scheme, the utility model has the beneficial effects that:

according to the lockbolt assembly provided by the utility model, the bolts are connected with the locknut screwed in the forward direction and the locknut screwed in the reverse direction through threads, so that the looseness of the locknut can be blocked by the locknut, and the locknut plays a role in looseness prevention.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a first embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.

The reference numerals in the drawings indicate: bolt 1, first screw 11, second screw 12, fastening nut 21, locknut 22, spring 3, locking screw 41, screw hole 42, constant head tank 43.

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.

The utility model is illustrated below with reference to fig. 1-2:

the utility model provides a lockbolt 1 subassembly, including bolt 1 and nut, bolt 1 includes first screw rod 11 and second screw rod 12, the diameter of first screw rod 11 is greater than the diameter of second screw rod 12, the end connection of first screw rod 11 has the bolt head, be equipped with forward screw thread on the first screw rod 11, be equipped with reverse screw thread on the second screw rod 12, threaded connection has fastening nut 21 on the first screw rod 11, threaded connection has locknut 22 on the second screw rod 12, be equipped with the locking piece of connection two between fastening nut 21 and locknut 22, fastening nut 21 forward rotation is the precession, locknut 22 reverse rotation is the unscrewing, forward rotation is clockwise rotation, reverse rotation is anticlockwise rotation, fastening nut 21 and locknut 22 are hexagon nut, the external diameter of fastening nut 21 and locknut 22 equals. In this application, the following two implementation structures are provided:

and the implementation structure is as follows: the locking piece is a spring 3, the spring 3 is sleeved on the first screw 11 and the second screw 12, and two ends of the spring 3 are respectively propped against the fastening nut 21 and the locking nut 22. After the fastening nut 21 is screwed, the locknut 22 is screwed again, the spring 3 is compressed, the spring 3 applies elastic force to the fastening nut 21 and locknut 22, so that the fastening nut 21 and locknut 22 form circumferential pretightening force by the spring 3, and if the fastening nut 21 is required to reversely rotate, the pretightening force can prevent the fastening nut from being used. Even if the locknut 22 is loosened, the pre-tightening force is present until the spring returns to its natural state, so that a certain loosening margin is provided for the locknut 22, within which the spring 2 can still pre-tighten the fastening nut 21.

And the implementation structure II: the locking piece is locking screw 41, is equipped with screw hole 42 on the locknut 22, is equipped with the constant head tank 43 that corresponds with screw hole 42 on the fastening nut 21, and constant head tank 43 is the blind hole of setting on the fastening nut 21, and the diameter of blind hole equals locking screw 41's screw rod diameter, and locking screw 41 connects in screw hole 42 and constant head tank 43, and locking screw 41's tip is the toper structure (toper structure sets up, makes things convenient for locking screw 41 to get into in the constant head tank 43). In the above structure, after the fastening nut 21 is screwed, the locknut 22 is screwed, the screwing position of the locknut 22 has no special requirement, the locking screw 41 is screwed into the positioning groove 43, and the end part of the locking screw 41 abuts against the bottom of the positioning groove 43, so that when the fastening nut 21 is loosened by reverse rotation, the locknut 22 is driven to reversely rotate, the locknut 22 is required to move towards the fastening nut 21, and is limited by the locking screw 41 and cannot move towards the fastening nut 21, thereby realizing locking and loosening; when the locknut 22 is loosened by forward rotation, the locknut 21 is driven to rotate forward by the locking screw 41, and further fastening is performed, so that whether the locknut 21 and the locknut 22 rotate forward or reversely, the locknut is limited, and a locking state is formed.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.

Claims

1. The utility model provides a lockbolt subassembly, includes bolt and nut, its characterized in that: the bolt include first screw rod and second screw rod, the diameter of first screw rod is greater than the diameter of second screw rod, is equipped with forward screw thread on the first screw rod, is equipped with reverse screw thread on the second screw rod, threaded connection has fastening nut on the first screw rod, threaded connection has locknut on the second screw rod, is equipped with the locking piece of connecting both between fastening nut and the locknut.

2. A lockbolt assembly as defined in claim 1, wherein: the anti-loose piece is a spring, the spring is sleeved on the first screw rod and the second screw rod, and two ends of the spring are respectively abutted against the fastening nut and the anti-loose nut.

3. A lockbolt assembly as defined in claim 1, wherein: the locking piece is a locking screw, a threaded hole is formed in the locking nut, a positioning groove corresponding to the threaded hole is formed in the fastening nut, and the locking screw is connected in the threaded hole and the positioning groove.

4. A lockbolt assembly according to claim 3, wherein: the end part of the locking screw is of a conical structure.

5. A lockbolt assembly according to claim 3, wherein: the positioning groove is a blind hole arranged on the fastening nut, and the diameter of the blind hole is equal to that of a screw rod of the locking screw.

6. A lockbolt assembly as defined in claim 1, wherein: the fastening nut and the locknut are hexagonal nuts, and the outer diameters of the fastening nut and the locknut are equal.