CN216922804U

CN216922804U - High-reliability self-locking fastener

Info

Publication number: CN216922804U
Application number: CN202122451420.XU
Authority: CN
Inventors: 舒族华
Original assignee: Suzhou Huabo Precision Hardware Products Co ltd
Current assignee: Suzhou Huabo Precision Hardware Products Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-07-08
Anticipated expiration: 2031-10-13

Abstract

The utility model discloses a high-reliability self-locking fastener, which relates to the field of hardware fittings and comprises a bolt head, wherein the bottom end of the bolt head is fixedly connected with a screw rod, a self-locking mechanism is arranged in the screw rod, the self-locking mechanism comprises an inner groove formed in the top of the screw rod, self-locking side holes are formed in the screw rods on the two sides of the bottom of the inner groove, thread posts are connected in the inner groove, the bottom end of each thread post is rotatably connected with an extrusion head, a locking pressure rod is arranged in each self-locking side hole, one end of each locking pressure rod is connected with the extrusion head in a sliding mode, and a plurality of locking teeth are arranged at the other end of each locking pressure rod. According to the utility model, the self-locking mechanism is arranged in the screw, so that the screw can be subjected to self-locking limiting under the condition that the screw is connected, the reliability and the stability of bolt connection are realized, and the bolt connection effect is good.

Description

High-reliability self-locking fastener

Technical Field

The utility model relates to the field of hardware fittings, in particular to a high-reliability self-locking fastener.

Background

At present, on each machine device, a fastening piece is required to be fixedly connected, and the assembly between each part is realized through the connection of the fastening piece.

The current fastener is a traditional bolt-nut connection mode, and during the use process, when the external impact is received, the bolt-nut may loosen or rotate, so that the connection is not firm, and therefore further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The present invention provides a highly reliable self-locking fastener that solves the problems set forth in the background above.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a high reliability auto-lock fastener, includes the bolt head, the bottom fixed connection screw rod of bolt head, include be equipped with self-locking mechanism in the screw rod, self-locking mechanism is including seting up the inside groove at screw rod top, has all seted up the auto-lock side opening in the screw rod of inside groove bottom both sides, and inside groove female connection screw thread post, the bottom of screw thread post are rotated and are connected the extrusion head, are equipped with the locking depression bar in the auto-lock side opening, the one end and the extrusion head sliding connection of locking depression bar, and the other end of locking depression bar is equipped with a plurality of locking teeth.

As a preferable technical scheme of the utility model, the two sides of the extrusion head are respectively provided with an inclined surface, the inclined surfaces are provided with a limiting sliding groove, one end of the locking compression bar close to the extrusion block is fixedly connected with a sliding end block, and the sliding end block is arranged in the limiting sliding groove and is in sliding connection with the limiting sliding groove.

According to a preferable technical scheme of the utility model, the top of the bolt head is provided with a sinking groove, the top end of the threaded column extends into the sinking groove and is fixedly connected with the top cap, and the threaded column is in threaded connection with the bolt head.

As a preferable technical scheme of the utility model, the locking teeth are arranged in plurality and are distributed at equal intervals from top to bottom at the end part of the locking pressure rod.

As a preferable technical scheme of the utility model, the top end of the top cap is provided with a cross hole.

The utility model has the following advantages: according to the utility model, the self-locking mechanism is arranged in the screw, so that the screw can be subjected to self-locking limiting under the condition that the screw is connected, the reliability and stability of bolt connection are realized, and the bolt connection effect is good.

Drawings

Fig. 1 is a schematic structural diagram of a high-reliability self-locking fastener.

Fig. 2 is a schematic structural diagram of a self-locking mechanism in the high-reliability self-locking fastener.

Fig. 3 is a schematic structural view of a locking strut in a high reliability self-locking fastener.

Fig. 4 is a schematic structural diagram of an extrusion head in a high reliability self-locking fastener.

In the figure: 1. a bolt head; 2. a screw; 3. sinking a groove; 4. ejecting; 5. self-locking side holes; 6. a threaded post; 7. an inner tank; 8. an extrusion head; 9. locking the compression bar; 10. a locking tooth; 11. a sliding end block; 12. a slope surface; 13. and a limiting sliding groove.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a high-reliability self-locking fastener includes a bolt head 1, a screw rod 2 fixedly connected to a bottom end of the bolt head 1, a self-locking mechanism disposed in the screw rod 2, the self-locking mechanism including an inner groove 7 disposed at a top of the screw rod 2, self-locking side holes 5 disposed in the screw rod 2 at two sides of a bottom of the inner groove 7, a threaded post 6 connected to the inner groove 7 via a thread, an extrusion head 8 rotatably connected to a bottom end of the threaded post 6, a locking pressing rod 9 disposed in the self-locking side hole 5, one end of the locking pressing rod 9 slidably connected to the extrusion head 8, and a plurality of locking teeth 10 disposed at the other end of the locking pressing rod 9.

The two sides of the extrusion head 8 are both provided with inclined surfaces 12, the inclined surfaces 12 are provided with limiting sliding grooves 13, one end of the locking compression bar 9 close to the extrusion block is fixedly connected with a sliding end block 11, and the sliding end block 11 is arranged in the limiting sliding grooves 13 and is in sliding connection with the limiting sliding grooves.

The top of the bolt head 1 is provided with a sinking groove 3, the top end of a threaded column 6 extends into the sinking groove 3 and is fixedly connected with a top cap 4, and the threaded column 6 is in threaded connection with the bolt head 1.

The number of the locking teeth 10 is multiple, and the locking teeth 10 are distributed at equal intervals from top to bottom at the end part of the locking pressure rod 9.

The top end of the top cap 4 is provided with a cross hole. In the process of the implementation of the utility model,

in the using process of the utility model, firstly, the bolt head 1 is rotated to enable the screw rod 2 to rotate to enable the screw rod to be in threaded connection with the connected accessory, after the threaded connection is finished, the screw driver is used for driving the top cap 4 to rotate, so that the threaded column 6 rotates, the threaded column 6 moves towards the screw rod 2 when rotating and drives the extrusion head 8 to move, and the extrusion head 8 pushes the locking compression bars 9 at two sides to move when moving until the locking teeth 10 extend out of the self-locking side holes 5 and contact with the threaded holes on the accessory, so that the self-locking of the screw rod 2 is realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high reliability auto-lock fastener, includes bolt head (1), bottom fixed connection screw rod (2) of bolt head (1), its characterized in that, includes be equipped with self-locking mechanism in screw rod (2), self-locking mechanism is including offering in inside groove (7) at screw rod (2) top, has all seted up auto-lock side opening (5) in screw rod (2) of inside groove (7) bottom both sides, inside groove (7) female connection screw thread post (6), and the bottom of screw thread post (6) is rotated and is connected extrusion head (8), is equipped with locking depression bar (9) in auto-lock side opening (5), and the one end and the extrusion head (8) sliding connection of locking depression bar (9), the other end of locking depression bar (9) are equipped with a plurality of locking teeth (10).

2. The high-reliability self-locking fastener according to claim 1, wherein the two sides of the extrusion head (8) are provided with inclined surfaces (12), the inclined surfaces (12) are provided with limit sliding grooves (13), one end of the locking compression bar (9) close to the extrusion block is fixedly connected with a sliding end block (11), and the sliding end block (11) is arranged in the limit sliding grooves (13) and is in sliding connection with the same.

3. The high-reliability self-locking fastener according to claim 2, wherein a sunken groove (3) is formed in the top of the bolt head (1), the top end of the threaded column (6) extends into the sunken groove (3) and is fixedly connected with the top cap (4), and the threaded column (6) is in threaded connection with the bolt head (1).

4. The high reliability self-locking fastener according to claim 1, characterized in that the locking teeth (10) are provided in plurality, and the locking teeth (10) are distributed equidistantly from top to bottom at the end of the locking strut (9).

5. The high-reliability self-locking fastener according to claim 3, characterized in that the top end of the top cap (4) is provided with a cross hole.