CN112431842A

CN112431842A - Novel anti-loosening screw

Info

Publication number: CN112431842A
Application number: CN202011413626.7A
Authority: CN
Inventors: 杨磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-03-02

Abstract

The invention discloses a novel anti-loosening screw, which relates to the field of screws and comprises a screw body, an anti-loosening nut and a mounting seat, wherein the mounting seat is provided with a screw hole matched with the screw body, the port of the screw hole is provided with a nut clamping groove in a hexagonal columnar groove, and the anti-loosening nut is embedded in the nut clamping groove in a matched and clamped mode, so that the novel anti-loosening screw has the advantages that: when the screw body is screwed down and enters the screw hole, the pressing disc at the upper end of the screw body applies downward abutting pressure to the upper half nut, and the convex cone part on the lower half nut is internally extruded, so that the thread connection tightness between the locknut and the screw body is enhanced, and the looseness is prevented; the screw body is screwed up until the locking teeth on the lower surface of the pressure plate are matched with the locking tooth grooves on the upper surface of the upper half nut to form a proper buckle, so that the screw body is effectively prevented from being reversed and loosened.

Description

Novel anti-loosening screw

Technical Field

The invention relates to the technical field of screws and hardware standard parts, in particular to a novel anti-loosening screw.

Background

Screws are a common fastener and are widely used in connection with machinery, electrical appliances and buildings. The traditional screw can cause the self-tapping screw to differentially and reversely rotate under various forces to loosen, so that the loosening of the connection part of machinery or buildings is caused, is a main reason of vibration and noise generated by mechanical components, and is one of safety factors influencing the connection of the buildings.

The bottom end of the screw head of the conventional screw nut and the abutting surface of a buckled part are respectively coated with anti-loose plastic and anti-leakage materials, and in the long-term use process, along with the mass change of the anti-loose plastic or the anti-leakage materials, the screw is easy to loosen, so that a novel anti-loose screw is needed.

Disclosure of Invention

The present invention is directed to a novel anti-loosening screw, which solves the above problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel check screw, includes screw body, locknut and mount pad, set up on the mount pad and match the screw hole that suits with the screw body, the port department of screw hole sets up the nut draw-in groove that is hexagonal column recess, and the cooperation card has locknut in the nut draw-in groove, and screw body and locknut looks spiro union, the upper end of screw body is turned round for the screw is pulled, and the bottom integrated into one piece that the screw was pulled and is turned round has the pressure disk, pressure disk and locknut laminating.

Preferably, the lower end of the screw body is provided with a split, the bottom end of the screw body is provided with a conical extrusion concave hole, and the bottom of the screw hole is provided with a conical extrusion convex part.

Preferably, the locknut is composed of a lower half nut and an upper half nut which are overlapped, a pair of positioning pins is arranged on the joint surface of the upper half nut and the lower half nut, and a pair of positioning holes corresponding to the positioning pins is arranged on the joint surface of the lower half nut and the upper half nut.

Preferably, a conical convex cone part is integrally formed inside the joint surface of the lower half nut and the upper half nut, and a conical groove matched with the convex cone part is formed in the joint surface of the upper half nut and the lower half nut.

Preferably, the lower surface of the pressure plate is integrally formed with annular oblique-toothed anti-loosening teeth, the upper surface of the upper half nut is provided with anti-loosening tooth grooves matched with the anti-loosening teeth, and the anti-loosening teeth are matched with the anti-loosening tooth grooves to be buckled.

Preferably, the bottom surface of the lower half nut is connected with an annular elastic ring in a clamping and embedding manner, the bottom of the annular elastic ring abuts against the bottom of the nut clamping groove, and the surface of the bottom of the annular elastic ring is provided with a plurality of deformation openings.

The invention has the technical effects and advantages that:

1. when the screw body is connected, when the screw body is screwed into the screw hole, the extrusion convex part is inserted into the extrusion concave hole at the bottom end of the screw body and props the bottom end of the screw body to two sides, so that the tightness of the threaded connection at the bottom end of the screw body is enhanced and the loosening is prevented;

2. when the screw body is screwed down and enters the screw hole, the pressing disc at the upper end of the screw body applies downward abutting pressure to the upper half nut, and the convex cone part on the lower half nut is internally extruded, so that the thread connection tightness between the locknut and the screw body is enhanced, and the looseness is prevented;

3. the screw body is screwed until the anti-loosening teeth on the lower surface of the pressure plate are matched and buckled with the anti-loosening tooth grooves on the upper surface of the upper half nut, so that the screw body is effectively prevented from being reversely loosened.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a screw body according to the present invention.

Fig. 3 is a schematic perspective view of the locknut of the present invention.

Fig. 4 is a half sectional view showing a three-dimensional structure of the locknut of the present invention.

Fig. 5 is a front cross-sectional view of the inventive structure.

Fig. 6 is an enlarged view of a portion a in fig. 5.

In the figure: 1. a screw body; 101. turning the screw; 102. a platen; 1021. anti-loosening teeth; 103. a breach; 1031. extruding the concave hole; 2. a locknut; 201. a lower half nut; 2011. a convex cone portion; 202. an upper half nut; 2021. a locking tooth groove; 2022. positioning pins; 203. an annular elastic ring; 2031. opening deformation; 3. a mounting seat; 301. a screw hole; 3011. extruding the convex part; 302. nut clamping grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a novel anti-loosening screw as shown in figures 1-6, which comprises a screw body 1, a anti-loosening nut 2 and a mounting seat 3, wherein the mounting seat 3 is provided with a screw hole 301 matched with the screw body 1, the end opening of the screw hole 301 is provided with a nut clamping groove 302 which is a hexagonal columnar groove, the nut clamping groove 302 is matched with and clamped with the anti-loosening nut 2, the screw body 1 is in threaded connection with the anti-loosening nut 2, the lower end of the screw body 1 is provided with a crack 103, the bottom end of the screw body 1 is provided with a conical extrusion concave hole 1031, the bottom of the screw hole 301 is provided with a conical extrusion convex part 3011, when the screw body 1 is screwed into the screw hole 301, the extrusion convex part 3011 is inserted into the extrusion concave hole 1031 at the bottom end of the screw body 1 and props the bottom end of the screw body 1 to two sides, so as to enhance the thread connection tightness at the bottom end of the screw body, preventing looseness.

As shown in fig. 4, the locknut 2 is composed of a lower half nut 201 and an upper half nut 202 which are overlapped, a pair of positioning pins 2022 are provided on the joint surface of the upper half nut 202 and the lower half nut 201, and a pair of positioning holes corresponding to the positioning pins 2022 are provided on the joint surface of the lower half nut 201 and the upper half nut 202, and positioning is performed when the lower half nut 201 and the upper half nut 202 are connected.

Referring to fig. 4, 5 and 6, the upper end of the screw body 1 is a screw turning head 101, a pressure plate 102 is integrally formed at the bottom end of the screw turning head 101, the pressure plate 102 is attached to the locknut 2, a conical convex conical portion 2011 is integrally formed inside an attachment surface of the lower half nut 201 and the upper half nut 202, a conical groove matched with the conical convex conical portion 2011 is formed on the attachment surface of the upper half nut 202 and the lower half nut 201, when the screw body 1 is screwed into the screw hole 301, the pressure plate 102 at the upper end of the screw body 1 applies downward pressure to the upper half nut 202, at this time, the conical convex portion 2011 on the lower half nut 201 is pressed inward, so that the tightness of the threaded connection between the locknut 2 and the screw body 1 is enhanced, and the looseness is prevented.

As shown in fig. 2, 4 and 5, the lower surface of the pressure plate 102 is integrally formed with an annular helical tooth-shaped anti-loosening tooth 1021, the upper surface of the upper half nut 202 is provided with an anti-loosening tooth groove 2021 matched with the anti-loosening tooth 1021, and when the screw body 1 is screwed until the anti-loosening tooth 1021 and the anti-loosening tooth groove 2021 are matched and fastened properly, the screw body 1 is effectively prevented from being reversely loosened.

Referring to fig. 3 and 6, the bottom surface of the lower half nut 201 is connected with the annular elastic ring 203 in a clamping and embedding manner, the bottom of the annular elastic ring 203 abuts against the bottom of the nut slot 302, a pair of gaps is reserved between the locknut 2 and the bottom of the nut slot 302, and a plurality of deformation openings 2031 are formed in the bottom surface of the annular elastic ring 203, so that the annular elastic ring 203 is deformed conveniently, when the screw body 1 is to be loosened and unloaded, the locknut 2 is pressed down by auxiliary tools such as a screwdriver until the locking tooth groove 2021 on the upper surface of the upper half nut 202 is separated from the locking teeth 1021 on the lower surface of the pressure plate 102, and at the moment, the screw body 1 can be loosened and unloaded to be taken out.

The working principle of the invention is as follows: when the screw body 1 is connected, when the screw body 1 is screwed into the screw hole 301, the extrusion convex part 3011 is inserted into the extrusion concave hole 1031 at the bottom end of the screw body 1, and the bottom end of the screw body 1 is propped open towards two sides, so that the tightness of the threaded connection at the bottom end of the screw body 1 is enhanced, and the looseness is prevented;

when the screw body 1 is screwed down and enters the screw hole 301, the pressure plate 102 at the upper end of the screw body 1 applies downward abutting pressure to the upper half nut 202, and the convex cone 2011 on the lower half nut 201 is pressed inwards at the moment, so that the tightness of threaded connection between the locknut 2 and the screw body 1 is enhanced, and looseness is prevented;

when the screw body 1 is screwed until the locking teeth 1021 on the lower surface of the pressure plate 102 are matched with the locking tooth grooves 2021 on the upper surface of the upper half nut 202 for proper buckling, the screw body 1 is effectively prevented from being reversed and loosened.

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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a novel check screw, includes screw body (1), locknut (2) and mount pad (3), its characterized in that: offer on mount pad (3) and match suitable screw hole (301) with screw body (1), the port department of screw hole (301) offers nut draw-in groove (302) that are hexagonal column recess, and the cooperation has embedded lock nut (2) in nut draw-in groove (302), and screw body (1) and lock nut (2) looks spiro union, turn round (101) are pulled for the screw to the upper end of screw body (1), and the bottom integrated into one piece of turn round (101) is pulled to the screw has pressure disk (102), and pressure disk (102) and lock nut (2) laminating.

2. A novel anti-loosening screw according to claim 1, characterized in that: breach (103) have been seted up to the lower extreme of screw body (1), and have seted up along the bottom of screw body (1) and be coniform extrusion shrinkage pool (1031), and the hole bottom of screw hole (301) is equipped with coniform extrusion convex part (3011).

3. A novel anti-loosening screw according to claim 1, characterized in that: the anti-loosening nut (2) is composed of a lower half nut (201) and an upper half nut (202) which are overlapped, a pair of positioning pins (2022) are arranged on the joint surface of the upper half nut (202) and the lower half nut (201), and a pair of positioning holes corresponding to the positioning pins (202) are formed in the joint surface of the lower half nut (201) and the upper half nut (202).

4. A novel check screw according to claim 3, characterized in that: the inner part of the joint surface of the lower half nut (201) and the upper half nut (202) is integrally formed with a conical convex cone part (2011), and the joint surface of the upper half nut (202) and the lower half nut (201) is provided with a conical groove matched with the convex cone part (2011).

5. A novel check screw according to claim 1 or 3, characterized in that: the lower surface of the pressure plate (102) is integrally formed with annular oblique-toothed anti-loosening teeth (1021), the upper surface of the upper half nut (202) is provided with anti-loosening tooth grooves (2021) matched with the anti-loosening teeth (1021), and the anti-loosening teeth (1021) are matched with the anti-loosening tooth grooves (2021) and are fastened properly.

6. A novel check screw according to claim 3, characterized in that: the bottom surface of the lower half nut (201) is connected with an annular elastic ring (203) in an embedded mode, the bottom of the annular elastic ring (203) abuts against the bottom of the nut clamping groove (302), and the bottom surface of the annular gasket (203) is provided with a plurality of deformation openings (2031).