CN214742673U

CN214742673U - Self-locking spiral thread fastener

Info

Publication number: CN214742673U
Application number: CN202022233316.9U
Authority: CN
Inventors: 韩小悦
Original assignee: Jiangsu Better Special Alloy Co ltd
Current assignee: Jiangsu Better Special Alloy Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-11-16
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a self-locking helix threaded fastener, including double-screw bolt and nut, the inside of nut is provided with the internal thread to the both sides of internal screw thread concave edge all are provided with the face of agreeing with to one side, the surface of double-screw bolt is provided with the external screw thread, external screw thread and internal thread looks adaptation to the chimb of external screw thread agrees with the face department of meeting to one side, first installation cavity has all been seted up to the inside of nut both sides outer wall to sliding connection has the slide between the both sides of first installation cavity inner wall, the equal fixed connection in both sides of slide bottom has first spring promptly to the bottom of first spring and the inner wall fixed connection of first installation cavity, the middle part of slide is run through there is the montant, and the top of montant runs through and extends to the outside of nut, the utility model relates to fastener technical field. The self-locking spiral thread fastener solves the problems that the existing fastening bolt is easy to loosen, and the thread of the fastening nut is easy to age and slide, so that the fastening effect is general.

Description

Self-locking spiral thread fastener

Technical Field

The utility model relates to a fastener technical field specifically is a auto-lock helix threaded fastener.

Background

The fastener is a mechanical part which is used for fastening and connecting and has wide application, is a mechanical basic part which has the most wide application, and has the characteristics of various types and specifications, different performance and purposes and extremely high standardization, serialization and universalization degrees, so that the fastener with the existing national standard is called as a standard fastener or simply called as a standard part.

Many tight equipment require the fastener very high, if the fastener fastening effect that ages is general, very easily lead to equipment trouble, current fastening bolt is easily not hard up to the screw thread of fastening nut easily ages the thread and slides, leads to fastening effect general.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a self-locking helix threaded fastener has solved current fastening bolt and has become flexible easily to fastening nut's screw thread is easy ageing smooth tooth, leads to the general problem of fastening effect.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a self-locking spiral thread fastener comprises a stud and a nut, wherein an internal thread is arranged inside the nut, inclined wedge surfaces are arranged on two sides of a concave side of the internal thread, an external thread is arranged on the surface of the stud, the external thread is matched with the internal thread, and the convex side of the external thread is connected with the inclined wedge surfaces;

first installation cavity has all been seted up to the inside of nut both sides outer wall to sliding connection has the slide between the both sides of first installation cavity inner wall, the both sides of slide bottom all fixed connection have first spring to the bottom of first spring and the inner wall fixed connection of first installation cavity, the middle part of slide is run through there is the montant, the top of montant is run through and is extended to the outside of nut, the bottom of montant is run through and is extended to the inside of nut.

Preferably: the second installation cavity is formed in the right side of the first installation cavity, a second spring is fixedly connected to the right side of the inner wall of the second installation cavity, and a sliding block is fixedly connected to the left end of the second spring.

Preferably: the top fixedly connected with minor axis of slider, the top of minor axis is run through and is extended to the outside of second installation cavity, the top fixedly connected with kelly of minor axis.

Preferably: the top of the second mounting cavity is provided with a sliding groove, and the sliding groove is matched with the short shaft.

Preferably: the right side at the top of the vertical rod is provided with a clamping groove, and the clamping groove is matched with the clamping rod.

Preferably: the surface of the left end of the stud is sleeved with a washer, and the left end of the stud is fixedly connected with a nut.

Advantageous effects

The utility model provides a self-locking helix thread fastener. The method has the following beneficial effects:

this auto-lock helix threaded fastener through pressing the montant downwards, loosens the kelly again, makes kelly and draw-in groove joint, and the bottom of montant extends to make and ensures between internal thread and the external screw thread that the nut can not become flexible, makes external screw thread and internal thread contact surface more firm when rotatory double-screw bolt through the setting up of two tapered surfaces, can not warp ageing easily.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic structural view of the interior of the nut of the present invention;

fig. 4 is a partially enlarged view of the point B in fig. 2 according to the present invention.

In the figure: the spring bolt comprises a stud 1, a nut 2, an internal thread 3, an inclined wedge surface 4, an external thread 5, a first mounting cavity 6, a sliding plate 7, a first spring 8, a vertical rod 9, a second mounting cavity 10, a second spring 11, a sliding block 12, a short shaft 13, a clamping rod 14, a sliding groove 15, a clamping groove 16, a washer 17 and a nut 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a auto-lock helix threaded fastener, includes double-screw bolt 1 and nut 2, the inside of nut 2 is provided with internal thread 3 to the both sides of the concave edge of internal thread 3 all are provided with oblique contract face 4, and the surface of double-screw bolt 1 is provided with external screw thread 5, external screw thread 5 and internal thread 3 looks adaptation, and the chimb oblique contract face 4 of external screw thread 5 meets the department, and is further: the surface of the left end of the stud 1 is sleeved with a washer 17, and the left end of the stud 1 is fixedly connected with a nut 18.

First installation cavity 6 has all been seted up to the inside of 2 both sides outer walls of nut to sliding connection has slide 7 between the both sides of 6 inner walls of first installation cavity, the both sides of slide 7 bottom all are fixed to be connected and have first spring 8, and the bottom of first spring 8 and the inner wall fixed connection of first installation cavity 6, the middle part of slide 7 runs through there is montant 9, the top of montant 9 runs through and extends to the outside of nut 2, the bottom of montant 9 runs through and extends to the inside of nut 2.

Further: second installation cavity 10 has been seted up on the right side of first installation cavity 6 to the right side fixedly connected with second spring 11 of second installation cavity 10 inner wall, the left end fixedly connected with slider 12 of second spring 11, the top fixedly connected with minor axis 13 of slider 12, the outside that just extends to second installation cavity 10 is run through and is extended to the top of minor axis 13, the top fixedly connected with kelly 14 of minor axis 13.

Further: the top of the second mounting cavity 10 is provided with a sliding groove 15, the sliding groove 15 is matched with the short shaft 13, the right side of the top of the vertical rod 9 is provided with a clamping groove 16, and the clamping groove 16 is matched with the clamping rod 14.

During the use, at first pulling kelly 14 makes kelly 14 break away from draw-in groove 16, moves up under the effect of first spring 8 montant 9, locates the one end of double-screw bolt 1 with fastening nut 2 cover again, screws up fixedly, then presses down montant 9, loosens kelly 14 again, makes kelly 14 and draw-in groove 16 joint, and the bottom of montant 9 extends and makes and guarantee between internal thread 3 and the external screw thread 5 that nut 2 can not become flexible, makes the internal thread more firm through the setting of two tapered surfaces 4 simultaneously, can not warp ageing easily.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a auto-lock helix threaded fastener, includes double-screw bolt (1) and nut (2), its characterized in that: an internal thread (3) is arranged inside the nut (2), inclined wedge surfaces (4) are arranged on two sides of a concave side of the internal thread (3), an external thread (5) is arranged on the surface of the stud (1), the external thread (5) is matched with the internal thread (3), and convex side inclined wedge surfaces (4) of the external thread (5) are connected;

first installation cavity (6) have all been seted up to the inside of nut (2) both sides outer wall to sliding connection has slide (7) between the both sides of first installation cavity (6) inner wall, the both sides of slide (7) bottom all fixed connection have first spring (8), and the bottom of first spring (8) and the inner wall fixed connection of first installation cavity (6), the middle part of slide (7) is run through and is had montant (9), the outside that just extends to nut (2) is run through on the top of montant (9), the bottom of montant (9) is run through and is extended to the inside of nut (2).

2. A self-locking helical thread fastener as claimed in claim 1, wherein: second installation cavity (10) have been seted up on the right side of first installation cavity (6) to the right side fixedly connected with second spring (11) of second installation cavity (10) inner wall, the left end fixedly connected with slider (12) of second spring (11).

3. A self-locking helical thread fastener as claimed in claim 2, wherein: the top of the sliding block (12) is fixedly connected with a short shaft (13), the top end of the short shaft (13) penetrates through and extends to the outside of the second mounting cavity (10), and the top end of the short shaft (13) is fixedly connected with a clamping rod (14).

4. A self-locking helical thread fastener as claimed in claim 2, wherein: the top of the second mounting cavity (10) is provided with a sliding groove (15), and the sliding groove (15) is matched with the short shaft (13).

5. A self-locking helical thread fastener as claimed in claim 1, wherein: the right side of the top of the vertical rod (9) is provided with a clamping groove (16), and the clamping groove (16) is matched with the clamping rod (14).

6. A self-locking helical thread fastener as claimed in claim 1, wherein: the surface of the left end of the stud (1) is sleeved with a washer (17), and the left end of the stud (1) is fixedly connected with a nut (18).