CN220015784U

CN220015784U - Spring clip locknut

Info

Publication number: CN220015784U
Application number: CN202321429102.6U
Authority: CN
Inventors: 王平安
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-11-14
Anticipated expiration: 2033-06-06

Abstract

The utility model discloses a spring clip locknut, and relates to the technical field of fasteners. The spring clip locknut comprises an outer nut and an inner nut, wherein an inner threaded part is arranged on the inner side of the inner nut, and the inner nut is connected with a bolt through the inner threaded part; an inner conical surface, a necking part and an inner inclined surface are arranged in the outer nut; an outer conical surface and an outer inclined surface are arranged in the inner nut, the inner nut is clamped with the outer nut through the shrinkage part, the outer conical surface is attached to the inner conical surface, and the number of the outer inclined surfaces corresponds to that of the inner inclined surface and is attached to each other. The spring clamp locknut has the advantages that the mutual thrust generated between the outer nut and the inner nut is caused by the upward thrust of the pressed surface reaction force, the inner nut of the spring clamp locknut contracts and clamps the bolt, and the greater the tightening force for tightening the spring clamp locknut is due to the upward thrust of the pressed surface reaction force, the greater the inner nut contracts and clamps the spring clamp locknut, so that the friction force is increased by the spring clamp locknut and the bolt, and the effect of higher anti-loose self-locking is achieved.

Description

Spring clip locknut

Technical Field

The utility model relates to the technical field of fasteners, in particular to a spring clip locknut.

Background

A modified combination locknut with the publication number of CN209671385U, which comprises a female nut 1 with an inverted conical counter bore 2 at one end surface and a male nut 3 with an inverted conical platform body 4 at one end surface; the surface of the inverted cone-shaped counter bore 2 is of an inner cone-shaped or inner oval cone-shaped structure, and the threads of the female nut 1 are coaxial with the axis of the inverted cone-shaped counter bore; the inverted cone-shaped table body 4 is in an inverted elliptical cone table or inverted cone table structure, and the threads of the male nut 3 are coaxial with the axis of the inverted cone table; the locking force of the male nut on the bolt is improved, the loosening of threads is prevented, the shearing action on the bolt is avoided, the service life of the bolt is prolonged, and the defects of uneven stress, large thread clearance and the like of a nut component are overcome; is a nonstandard locknut assembly.

Above-mentioned nut can be equipped with the shrink groove that prevents pivoted each other because of first nut and second nut in the in-service use, and the shrink groove warp when screwing up, screws up the thrust of second nut, makes first nut downwardly moving, produces the clearance between bolt and the nut, leads to friction between two nuts to reduce, easily causes the pine to take place.

Disclosure of Invention

The utility model aims to provide a spring clamp locknut, which can solve the problem that an inner nut and an outer nut of a combined nut are easy to loose when being screwed.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the spring clip locknut comprises an outer nut and an inner nut, wherein an inner threaded part is arranged on the inner side of the inner nut, and the inner nut is connected with the bolt through the inner threaded part;

an inner conical surface, a necking part and an inner inclined surface are arranged in the outer nut, and the number of the inner inclined surfaces is 1-6 groups;

an outer conical surface and an outer inclined surface are arranged in the inner nut, the inner nut is clamped with the outer nut through the shrinkage part, the outer conical surface is attached to the inner conical surface, and the number of the outer inclined surfaces corresponds to that of the inner inclined surface and is attached to each other.

Preferably, an upper shrinkage groove and a lower shrinkage groove are further arranged in the inner nut, the number of the upper shrinkage grooves is 1-6 groups, the number of the lower shrinkage grooves is 1-6 groups, the upper shrinkage grooves and the lower shrinkage grooves are distributed at the top and the bottom of the inner nut respectively in a staggered arrangement, the upper shrinkage grooves extend along the outer inclined plane to the bottom of the inner nut, and the lower shrinkage grooves extend along the outer inclined plane to the top of the inner nut.

Preferably, the axes of the outer nut and the inner nut are provided with center lines, and angles B are arranged between the center lines and the inner conical surfaces; an angle C is arranged between the central line and the outer conical surface and between the central line and the outer inclined surface, and the angle B and the angle C are equal and are 1-10 degrees.

Compared with the prior art, the utility model has the beneficial effects that: according to the spring clamp locknut, the inner conical surface and the inner inclined surface in the outer nut are opposite to the conical surface arranged on the outer conical surface and the outer inclined surface of the inner nut, the upper shrinkage groove and the lower shrinkage groove of the inner nut can shrink, when the spring clamp locknut is screwed down, the inner nut slides downwards and rotates due to the mutual thrust generated between the outer nut and the inner nut caused by the upward thrust of the pressed surface reaction force, the inner nut of the spring clamp locknut shrinks and clamps the bolt, and the larger the screwing force for screwing down the spring clamp locknut is due to the upward thrust of the pressed surface reaction force, the larger the internal nut shrinking clamping force of the spring clamp locknut is, so that the friction force is increased for the spring clamp locknut and the bolt, the higher anti-loosening and self-locking effects are achieved, the loosening risk of the nut is reduced, and the stability of connection fastening operation is ensured.

Drawings

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a block diagram of the inner nut of the present utility model;

fig. 4 is a cross-sectional view of the outer nut of the present utility model.

In the figure: 1. a bolt; 2. an outer nut; 21. an inner conical surface; 22. a pinch portion; 23. an inner inclined surface; 3. an inner nut; 31. an outer conical surface; 32. an internal thread portion; 33. an outer inclined surface; 34. an upper shrink groove; 35. a lower shrink tank; 4. a center line.

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. 1-4, the present utility model provides a technical solution: the spring clip locknut comprises an outer nut 2 and an inner nut 3, wherein an inner threaded part 32 is arranged on the inner side of the inner nut 3, and the inner nut 3 is connected with the bolt 1 through the inner threaded part 32; the outer nut 2 is internally provided with an inner conical surface 21, a necking part 22 and an inner inclined surface 23, and the number of the inner inclined surfaces 23 is 1-6 groups; an outer conical surface 31 and an outer inclined surface 33 are arranged in the inner nut 3, the inner nut 3 is clamped with the outer nut 2 through the shrinkage part 22, the outer conical surface 31 is attached to the inner conical surface 21, and the number of the outer inclined surfaces 33 corresponds to that of the inner inclined surfaces 23 and is attached to each other.

Further, an upper shrinkage groove 34 and a lower shrinkage groove 35 are further arranged in the inner nut 3, the number of the upper shrinkage grooves 34 is 1-6, the number of the lower shrinkage grooves 35 is 1-6, the upper shrinkage grooves 34 and the lower shrinkage grooves 35 are distributed at the top and the bottom of the inner nut 3 respectively in a staggered arrangement, the upper shrinkage grooves 34 extend along the outer inclined plane 33 to the bottom of the inner nut 3, the lower shrinkage grooves 35 extend along the outer inclined plane 33 to the top of the inner nut 3, a central line 4 is arranged at the axle center of the outer nut 2 and the inner nut 3, and an angle B is arranged between the central line 4 and the inner conical surfaces 21 and 13; an angle C is arranged between the central line 4 and the outer conical surface 31 and the outer inclined surface 33, and the angle B and the angle C are equal and are 1-10 degrees; the inner conical surface 21 and the inner inclined surface 23 in the outer nut 2 are opposite to the taper surfaces arranged on the outer conical surface 31 and the outer inclined surface 33 of the inner nut 3, and the upper contraction groove 34 and the lower contraction groove 35 of the inner nut 3 can contract to enable the spring clamp locknut to be screwed down, so that when the spring clamp locknut is screwed down, the inner nut 3 slides down and rotates due to the mutual thrust generated between the outer nut 2 and the inner nut 3 caused by the upward thrust of the surface reaction force of the pressing, the inner nut 3 of the spring clamp locknut contracts to clamp the bolt 1, and the screwing force for screwing down the spring clamp locknut is larger, the inner nut 3 of the spring clamp locknut contracts to clamp the clamping force is larger, so that the friction force is increased for the spring clamp locknut and the bolt 1, the effect of higher anti-locking is achieved, and the defect of the deformation type combined locknut can be overcome.

Working principle: firstly, the inner conical surface 31 of the inner nut 3 is matched with the inner conical surface 21 of the upper outer nut 2, the outer inclined surface 33 of the inner nut 3 is matched with the inner inclined surface 23 of the upper outer nut 2, and the inner nut 3 is installed in the outer nut 2, the central line 4 of the outer nut 2 is overlapped with the central line 4 of the inner nut 3, the length of the inner nut 3 is shorter than that of the outer nut 2, the inner nut 3 is ensured to slide downwards to have enough space, and the necking part 22 of the outer nut 2 is clamped to the inner nut 3 to obtain the spring clamp locknut;

when the spring clamp locknut is screwed down, the angle B is set on the inner conical surface 21 and the inner inclined surface 23 of the outer nut 2, the angle C is set on the outer conical surface 31 and the outer inclined surface 33 of the inner nut 3, the outer nut 2 and the inner nut 3 are clamped with each other in the circumferential direction, when the spring clamp locknut is screwed down, the outer nut 2 and the inner nut 3 slide and rotate simultaneously, when the spring clamp locknut is screwed down to a pressed surface, the inner nut 3 can only slide and rotate downwards under the action of the bolt 1 due to the upward thrust of the pressed surface reaction force, and when the spring clamp locknut is screwed down, the inner nut 3 can only slide and rotate downwards due to the opposite taper surfaces of the inner conical surface 21 and the inner inclined surface 23 in the outer nut 2 and the outer conical surface 31 and the outer inclined surface 33 of the inner nut 3, and the upper shrinkage groove 34 and the lower shrinkage groove 35 of the inner nut 3 can shrink, when the spring clamp locknut is screwed down, the mutual thrust generated by the outer nut 2 and the inner nut 3 is enabled to slide and rotate downwards due to the upward thrust of the pressed surface reaction force of the pressed surface, and the locking force of the spring clamp nut 3 is increased, and the self-locking effect is achieved when the spring clamp locknut is screwed down, and the locking effect is increased.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. Spring clip locknut, its characterized in that includes:

an outer nut (2), wherein an inner conical surface (21), a necking part (22) and an inner inclined surface (23) are arranged in the outer nut (2), and the number of the inner inclined surfaces (23) is 1-6 groups;

the inner nut (3), establish outer conical surface (31) and outer inclined plane (33) in interior nut (3), interior nut (3) pass through shrinkage cavity (22) and outer nut (2) joint, and outer conical surface (31) laminating with interior conical surface (21), and the quantity and the interior inclined plane (23) of outer inclined plane (33) correspond and laminate each other.

2. A spring clip locknut as claimed in claim 1, wherein: the inner nut (3) is internally provided with an upper shrinkage groove (34) and a lower shrinkage groove (35), the number of the upper shrinkage groove (34) is 1-6 groups, the number of the lower shrinkage groove (35) is 1-4 groups, the upper shrinkage groove (34) and the lower shrinkage groove (35) are distributed at the top and the bottom of the inner nut (3) respectively in a staggered arrangement, the upper shrinkage groove (34) extends to the bottom of the inner nut (3) along an outer inclined surface (33), and the lower shrinkage groove (35) extends to the top of the inner nut (3) along the outer inclined surface (33).

3. A spring clip locknut as claimed in claim 2, wherein: a central line (4) is arranged at the axle center of the outer nut (2) and the inner nut (3), and an angle B is arranged between the central line (4) and the inner conical surfaces (21) and (13); an angle C is arranged between the central line (4) and the outer conical surface (31) and the outer inclined surface (33).

4. A spring clip locknut as defined in claim 3, wherein: the angle B and the angle C are equal and are 1-10 degrees.

5. A spring clip locknut as defined in claim 4, wherein: an internal thread part (32) is arranged on the inner side of the internal nut (3), and the internal nut (3) is connected with the bolt (1) through the internal thread part (32).