CN218093834U

CN218093834U - Split self-locking nut

Info

Publication number: CN218093834U
Application number: CN202221377379.4U
Authority: CN
Inventors: 刘国
Original assignee: Guizhou Hengtai Precision Machinery Co ltd
Current assignee: Guizhou Hengtai Precision Machinery Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-12-20
Anticipated expiration: 2032-06-02

Abstract

The scheme discloses a split type self-locking nut in the technical field of fastening parts, which comprises a main nut, an auxiliary nut and a locking assembly, wherein inner walls of the main nut and the auxiliary nut are provided with inner threads; the locking assembly comprises a lock catch, a mounting groove formed in the outer wall of the auxiliary nut and a lock groove formed in the outer wall of the nut seat, a vertical sliding rod is arranged in the mounting groove, a fixed shaft is connected to the sliding rod in a sliding mode, an elastic piece is connected between the fixed shaft and the bottom of the mounting groove, one end of the lock catch is rotatably connected with the fixed shaft, and a buckle lug matched with the lock groove is arranged at the other end of the lock catch. This scheme simple structure, independent and receive the restriction of hasp between main nut and the vice nut established, the vibration forces about the effect better more, and main nut and vice nut are difficult to take place just hardly the pine under the synchronous revolution's the condition and take off, play better locking effect.

Description

Split self-locking nut

Technical Field

The utility model belongs to the technical field of the fastening part, in particular to split type self-locking nut.

Background

The general nut can be loosened by itself due to vibration or collision and other reasons in the using process, various machines and components can not be separated from a fastener in connection assembly, if the fastener is loosened in mechanical operation, the damage and the disintegration of the components or the whole equipment can be caused, even serious mechanical accidents are caused, in order to prevent the phenomenon, the problem can be solved by utilizing the self-locking nut with higher connection strength and stability, the main functions are looseness prevention and vibration resistance, the self-locking nut is self-locked through internal friction, the self-locking nut which is frequently used in the market is provided with the types of nylon embedding rings, neck closing-in devices, metal adding loosening devices and the like, and the self-locking nut belongs to an effective force moment type anti-loosening nut.

In the use of the self-locking nut that uses at present, the auto-lock ability is comparatively single, current more self-locking nut is through changing the shape of the wedge face of nut internal thread, the locking force of production is inconsistent through the cusp with the bolt reaches the effect of auto-lock, but this kind of self-locking nut is owing to need contradict the cusp on the screw often, thereby can cause the wearing and tearing of screw thread and cusp, the locking force that can reach simultaneously is very limited, locking effect is relatively poor, the service life is shortened, and simultaneously, the long-time use of nut rusts easily, the dismounting of being not convenient for, need improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, convenient dismantlement, split type auto-lock nut that self-locking power is stronger.

The split type self-locking nut comprises a main nut, an auxiliary nut and a locking assembly, wherein inner threads are arranged on the inner walls of the main nut and the auxiliary nut; the locking assembly comprises a lock catch, a mounting groove formed in the outer wall of the auxiliary nut and a lock groove formed in the outer wall of the nut seat, a vertical sliding rod is arranged in the mounting groove, a fixed shaft is connected to the sliding rod in a sliding mode, an elastic piece is connected between the fixed shaft and the bottom of the mounting groove, one end of the lock catch is rotatably connected with the fixed shaft, and a buckle lug matched with the lock groove is arranged at the other end of the lock catch.

The working principle of the scheme is as follows: after the main nut and the auxiliary nut are in threaded connection with the bolt, the lock catch is pulled towards the main nut, the buckling lug is clamped into the lock groove, and then under the action of restoring force of the elastic piece, the lock catch tends to move towards the auxiliary nut, so that the buckling lug abuts against the top of the lock groove, and the distance between the main nut and the auxiliary nut is fixed.

Under the vibration condition and when making main nut or vice nut have not hard up trend, the nut can take place rotatoryly usually on the bolt, has set up the hasp in this scheme between main nut and vice nut, and main nut and vice nut are independent division, and both hardly take place synchronous rotation, receive the restriction each other of hasp and lead to the nut that has the rotation trend to continue to take place to rotate, and then realize consolidating the effect of locking. Because the lock catch is pulled towards the main nut and the auxiliary nut under the action of the elastic piece, the stronger the vibration is, the stronger the pulling force on the lock catch is, and the firmer the buckling lug is clamped in the lock groove, so that the stronger restriction effect is exerted.

The beneficial technical effect of this scheme is: this scheme simple structure, independent and receive the restriction of hasp between main nut and the vice nut established, the vibration forces about the effect better more, and main nut and vice nut are difficult to take place just hardly the pine under the synchronous revolution's the condition and take off, play better locking effect. The lock catch can be pulled along the length direction of the lock catch under the action of manpower to take the buckle lug out of the lock groove, and then the main nut and the auxiliary nut are detached from the bolt for reuse. A plurality of same anti-loosening assemblies can be arranged, and when one anti-loosening assembly accidentally loosens, other anti-loosening assemblies can still continuously exert the same effect.

Further, the top of locked groove is "V" shape contained angle of falling, the setting of detaining the ear slope, detain the roof laminating of ear and locked groove. Such design makes the buckle ear collude at the locked groove top for the more stable knot of buckle ear avoids unexpected pine to take off in the locked groove.

Furthermore, the contact surface of the buckling lug and the locking groove is provided with an anti-skid pad. The friction force between the buckling lug and the lock groove is enhanced, so that the buckling lug is buckled in the lock groove more firmly.

Furthermore, the main nut comprises a conical locking sleeve and an annular nut seat, the locking sleeve is coaxially communicated with the nut seat, a plurality of elastic ports are formed in the locking sleeve at intervals, and one end of the auxiliary nut is sleeved on the outer wall of the locking sleeve. One end of the auxiliary nut is sleeved on the outer wall of the locking sleeve, and the locking sleeve is conical, so that when the auxiliary nut moves towards the wider end of the locking sleeve, the locking sleeve can be pressed on the bolt, and the dual-reinforcement effect is achieved.

Drawings

Fig. 1 is a schematic structural view of an embodiment 1 of a split self-locking nut of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is an exploded view of the split self-locking nut of embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the locking device comprises a main nut 1, a locking sleeve 101, a tightening opening 102, a nut seat 103, an auxiliary nut 2, a mounting groove 3, a fixed shaft 4, a spring 5, a lock catch 6, a buckling lug 7 and a locking groove 8.

Example 1 is substantially as shown in figures 1 and 2 of the accompanying drawings: a split type self-locking nut comprises a main nut 1, an auxiliary nut 2 and a locking assembly, wherein inner threads are arranged on the inner walls of the main nut 1 and the auxiliary nut 2; locking subassembly includes hasp 6, sets up the locked groove 8 that sets up at the mounting groove 3 of vice nut 2 outer wall and nut seat 103 outer wall, is provided with vertical slide bar in the mounting groove 3, and sliding connection has dead axle 4 on the slide bar, is connected with spring 5 between the bottom of dead axle 4 and mounting groove 3, and the one end and the dead axle 4 of hasp 6 rotate to be connected, and the 6 other end of hasp is equipped with and detains ear 7 with 8 complex of locked groove. The top of locked groove 8 is "V" shape contained angle of falling, and the setting of detaining ear 7 slope, detain the roof laminating of ear 7 and locked groove 8, detain the ear 7 and be equipped with the slipmat with the contact surface of locked groove 8.

Example 2, the difference from example 1 is shown in fig. 3: the main nut 1 comprises a conical locking sleeve 101 and an annular nut seat 103, the locking sleeve 101 is coaxially communicated with the nut seat 103, a plurality of elastic ports 102 are formed in the locking sleeve 101 at intervals, and one end of the auxiliary nut 2 is sleeved on the outer wall of the locking sleeve 101.

Taking example 1 as an example, the specific implementation process is as follows: after the main nut 1 and the auxiliary nut 2 are both in threaded connection with the bolt, the lock catch 6 is pulled towards the main nut 1, the buckle lug 7 is clamped into the lock groove 8, and then under the action of restoring force of the spring 5, the lock catch 6 tends to move towards the auxiliary nut 2, so that the buckle lug 7 abuts against the top of the lock groove 8, and the distance between the main nut 1 and the auxiliary nut 2 is fixed.

Under the vibration condition and when making main nut 1 or vice nut 2 not hard up trend, the nut can take place to rotate on the bolt usually, has set up hasp 6 between main nut 1 and vice nut 2 in this scheme, and main nut 1 and vice nut 2 are independent, and both hardly take place synchronous rotation, receive 6 mutual restrictions of hasp and lead to the nut that has the rotation trend to continue to take place to rotate, and then realize consolidating the effect of locking. Because the lock catch 6 is pulled in two directions of the main nut 1 and the auxiliary nut 2 under the action of the spring 5, the stronger the vibration is, the stronger the pulling force applied to the lock catch 6 is, and the stronger the buckling lug 7 is clamped in the lock groove 8, so that the stronger restriction effect is exerted.

Claims

1. The utility model provides a split type self-locking nut which characterized in that: the anti-loosening device comprises a main nut, an auxiliary nut and a loosening-preventing assembly, wherein inner threads are formed in the inner walls of the main nut and the auxiliary nut; the locking assembly comprises a lock catch, a mounting groove formed in the outer wall of the auxiliary nut and a lock groove formed in the outer wall of the nut seat, a vertical sliding rod is arranged in the mounting groove, a fixed shaft is connected to the sliding rod in a sliding mode, an elastic piece is connected between the fixed shaft and the bottom of the mounting groove, one end of the lock catch is rotatably connected with the fixed shaft, and a buckle lug matched with the lock groove is arranged at the other end of the lock catch.

2. The split self-locking nut of claim 1, wherein: the top of locked groove is "V" shape contained angle of falling, the setting of detaining the ear slope, detain the roof laminating of ear and locked groove.

3. The split self-locking nut of claim 2, wherein: and the contact surface of the buckling lug and the locking groove is provided with an anti-slip pad.

4. The split self-locking nut according to any one of claims 1 to 3, wherein: the main nut comprises a conical locking sleeve and an annular nut seat, the locking sleeve is coaxially communicated with the nut seat, a plurality of elastic ports are formed in the locking sleeve at intervals, and one end of the auxiliary nut is sleeved on the outer wall of the locking sleeve.