CN210484349U

CN210484349U - Improved anti-loose bolt assembly

Info

Publication number: CN210484349U
Application number: CN201921157734.5U
Authority: CN
Inventors: 王斌辉
Original assignee: Yantai Mingdong Metal Manufacturing Co Ltd
Current assignee: Yantai Mingdong Metal Manufacturing Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-05-08
Anticipated expiration: 2029-07-22

Abstract

The utility model provides an improved generation check bolt assembly belongs to the fastener field. It has solved the current trouble problem of bolt assembly installation that has locking function. This improved generation check bolt assembly, including nut and screw rod, the screw rod head is fixed with the bolt head, be equipped with a plurality of retaining grooves along the radial setting of screw rod on the screw rod tail end terminal surface, the outer wall that the nut is close to the tail end is equipped with ring shape draw-in groove, nut outer wall between draw-in groove and the nut tail end is the round cover form with the coaxial setting of nut, the draw-in groove tank bottom distributes along circumference has one-way structure's ratchet, and the ratchet includes the face of blockking along the radial setting of nut, and with the inclined plane form glide plane of blockking the face and being connected, still include the bayonet lock, the bayonet lock includes shaft-like pin, and two hook-like kellies of connecting respectively at the pin both ends, the pin cooperation card is in the retaining groove, and two kelly tip inlays between the ratchet. The bolt assembly is very convenient to install and plays a role in preventing looseness.

Description

Improved anti-loose bolt assembly

Technical Field

The utility model belongs to the technical field of fastener, a improved generation check bolt assembly is related to.

Background

How to avoid the bolt assembly from loosening is always a technical problem that technicians continuously improve and need to continuously solve, and the prior Chinese patent with application number 201610265066.2 named as 'limiting type anti-loosening bolt assembly' utilizes a clamp spring type lock pin to be respectively matched with a flange plate on a nut and a through groove on a screw rod so as to limit the nut and the screw rod, thereby achieving the anti-loosening effect. However, in the actual installation process, the through grooves in the flange plate are arranged at intervals, the nut and the screw rod can be screwed in any angle, once the clamp spring type lock pin is screwed, the clamp spring type lock pin cannot be clamped into the through grooves in the flange plate, the nut needs to be unscrewed a small amount, otherwise, the clamp spring type lock pin cannot be installed, the nut and the screw rod can be loosened, meanwhile, the through groove positions in the flange plate and the screw rod need to be continuously compared, and the operation is very troublesome.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide an installation very convenient to can guarantee overall stability's improved generation check bolt assembly.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an improved generation check bolt assembly, includes nut and the screw rod of mutual spiro union, the screw rod head end be fixed with the bolt head, be equipped with a plurality of fluting forms that radially set up along the screw rod on the screw rod tail end terminal surface and keep off groove, its characterized in that: the nut be close to the outer wall of tail end coaxial be equipped with ring shape draw-in groove, the nut outer wall between draw-in groove and the nut tail end be the round sleeve column structure with the coaxial setting of nut, the draw-in groove tank bottom distribute along circumference has the ratchet of unidirectional structure, and the ratchet includes along the radial face that blocks that sets up of nut to and the inclined plane form glide plane of being connected with the face that blocks, still include the bayonet lock, the bayonet lock include shaft-like pin to and two hook-like kellies of connecting respectively at the pin both ends, the pin cooperation card is in the catch groove, and two kellies tip inlay between the ratchet, and nut and screw rod unscrew direction for blockking the orientation that blocks in the face of the kellies.

According to the bolt assembly, after the nut and the screw rod are screwed in place, the stop rods are clamped in the stop grooves in a matching mode, the end parts of the two clamping rods are embedded between the ratchets, if the nut and the screw rod can continue to rotate at the moment, the nut and the screw rod can be directly rotated, and the clamping pins do not need to be disassembled, so that the bolt assembly is very convenient to install; after the nut and the screw rod are thoroughly screwed, if the end part of the clamping rod cannot be matched and embedded on the ratchet, the nut and the screw rod do not need to be unscrewed, and once the nut is loosened on the screw rod, the end part of the clamping rod can be blocked by the blocking surface of the ratchet, so that the effect of preventing looseness is achieved.

In the improved anti-loose bolt assembly, the stop lever is of a two-section telescopic rod-shaped structure, the two sections of stop lever are connected through the extension spring, the extension spring has the tendency of tensioning the two clamping levers, and the two clamping levers are always positioned on the same side of the stop lever.

Therefore, the telescopic device can adapt to the axial small-amplitude expansion of the stop lever.

In the above improved anti-loose bolt assembly, the end of the clamping rod is in a pointed sawtooth structure matched with the ratchet.

Therefore, the structure is more stable, and the anti-loosening effect is better.

In the improved anti-loose bolt assembly, the nut is an outer hexagon nut, and the length of the stop lever is smaller than the diameter of an inscribed circle of the outer wall of the nut.

Therefore, after the clamping pin is installed, the clamping pin is prevented from blocking the wrench, and therefore the nut can be continuously rotated by using the wrench.

In the above improved anti-loose bolt assembly, the depth direction of the blocking groove extends along the axial direction of the screw rod.

Compared with the prior art, the utility model has the advantages of as follows:

Drawings

FIG. 1 is a cross-sectional view of the present bolt assembly after installation.

Fig. 2 is a side view and a partial sectional view of fig. 1.

In the figure, the position of the upper end of the main shaft,

1. a nut; 11. a card slot; 12. a ratchet; 13. a blocking surface; 14. a sliding surface;

2. a screw; 21. a bolt head; 22. a baffle groove;

3. a bayonet lock; 31. a stop lever; 32. a clamping rod; 33. a tension spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1 and 2, the utility model relates to an improved anti-loose bolt assembly, which comprises a nut 1 and a screw 2 which are screwed with each other, a bolt head 21 is fixed at the head end of the screw 2, a plurality of slotted baffle grooves 22 which are arranged along the screw 2 in the radial direction are arranged on the end face of the tail end of the screw 2, a circular ring-shaped clamping groove 11 is coaxially arranged on the outer wall of the nut 1 close to the tail end, the outer wall of the nut 1 between the clamping groove 11 and the tail end of the nut 1 is a circular sleeve-shaped structure which is coaxially arranged with the nut 1, ratchets 12 with a one-way structure are distributed on the bottom of the clamping groove 11 along the circumferential direction, the ratchets 12 comprise blocking surfaces 13 which are arranged along the radial direction of the nut 1, and inclined plane-shaped sliding surfaces 14 which are connected with the blocking surfaces 13, and a blocking pin 3, the blocking pin 3 comprises a rod-shaped blocking rod 31 and two, and the unscrewing direction of the nut 1 and the screw rod 2 is the blocking direction of the blocking surface 13 to the clamping rod 32.

Further, the stop lever 31 is a two-section telescopic rod-shaped structure, the two sections of stop lever 31 are connected through an extension spring 33, the extension spring 33 has a tendency of tensioning the two clamping rods 32, and the two clamping rods 32 are always located on the same side of the stop lever 31. The end of the clamping rod 32 is in a pointed sawtooth structure matched with the ratchet 12. The nut 1 is an outer hexagon nut 1, and the length of the stop lever 31 is smaller than the diameter of an inscribed circle on the outer wall of the nut 1. The baffle groove 22 extends in the depth direction in the axial direction of the screw 2.

According to the bolt assembly, after the nut 1 and the screw rod 2 are screwed in place, the stop rod 31 is clamped in the stop groove 22 in a matching mode, the end parts of the two clamping rods 32 are embedded between the ratchets 12, if the nut 1 and the screw rod 2 can be continuously rotated at the moment, the nut 1 and the screw rod 2 can be directly rotated, the clamping pin does not need to be detached, and therefore the bolt assembly is very convenient to install; after the nut 1 and the screw rod 2 are completely screwed, if the end part of the clamping rod 32 cannot be matched and embedded on the ratchet 12, the nut 1 and the screw rod 2 do not need to be unscrewed, and once the nut 1 is loosened on the screw rod 2, the end part of the clamping rod 32 can be blocked by the blocking surface 13 of the ratchet 12, so that the anti-loosening effect is achieved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms nut 1, catch 11, ratchet 12, stop face 13, sliding face 14, threaded rod 2, bolt head 21, catch groove 22, catch 3, catch 31, catch 32, tension spring 33, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an improved generation check bolt assembly, includes nut (1) and screw rod (2) of mutual spiro union, screw rod (2) head end be fixed with bolt head (21), be equipped with on screw rod (2) tail end terminal surface a plurality of fluting forms that radially set up along screw rod (2) and keep off groove (22), its characterized in that: the outer wall of the nut (1) close to the tail end is coaxially provided with a circular clamping groove (11), the outer wall of the nut (1) between the clamping groove (11) and the tail end of the nut (1) is of a circular sleeve-shaped structure which is coaxially arranged with the nut (1), ratchets (12) with a one-way structure are distributed at the bottom of the clamping groove (11) along the circumferential direction, and the ratchet (12) comprises a stop surface (13) arranged along the radial direction of the nut (1), and an inclined sliding surface (14) connected with the blocking surface (13), and also comprises a bayonet lock (3), wherein the bayonet lock (3) comprises a rod-shaped stop lever (31), and two hook-shaped clamping rods (32) respectively connected with the two ends of the stop lever (31), the stop lever (31) is clamped in the stop groove (22) in a matching way, the end parts of the two clamping rods (32) are embedded between the ratchets (12), and the unscrewing direction of the nut (1) and the screw rod (2) is the blocking direction of the blocking surface (13) to the clamping rods (32).

2. The improved lockbolt assembly of claim 1 wherein: the stop lever (31) is of a two-section telescopic rod-shaped structure, the two sections of stop lever (31) are connected through an extension spring (33), the extension spring (33) has the tendency of tensioning the two clamping rods (32), and the two clamping rods (32) are always positioned on the same side of the stop lever (31).

3. The improved lockbolt assembly of claim 2, wherein: the end part of the clamping rod (32) is of a pointed sawtooth structure matched with the ratchet (12).

4. An improved lockbolt assembly as defined in claim 3, wherein: the nut (1) is an outer hexagon nut (1), and the length of the stop lever (31) is smaller than the diameter of an inscribed circle of the outer wall of the nut (1).

5. The improved lockbolt assembly of claim 4, wherein: the depth direction of the blocking groove (22) extends along the axial direction of the screw rod (2).