CN217783987U

CN217783987U - Anti-loosening screw

Info

Publication number: CN217783987U
Application number: CN202221989065.XU
Authority: CN
Inventors: 义勤峰
Original assignee: Chaojie Connection System Jiangsu Co ltd
Current assignee: Chaojie Connection System Jiangsu Co ltd
Priority date: 2022-07-30
Filing date: 2022-07-30
Publication date: 2022-11-11
Anticipated expiration: 2032-07-30

Abstract

The utility model discloses an anti-loosening screw, which belongs to the technical field of fasteners and comprises a first plate and a second plate, wherein a threaded hole is formed in the second plate, a locking screw part is fixedly connected with the bottom end of the connecting screw part, and the direction of the spiral line of the outer side thread of the locking screw part is opposite to that of the spiral line of the outer side thread of the connecting screw part; the bottom of the second plate is provided with a lower convex portion, the bottom of the lower convex portion is provided with a barrel, the top of the barrel is fixedly connected with a connecting ring along the outer edge, the connecting ring is fixedly connected with the outer side of the lower convex portion, the inner side of the barrel is provided with an elastic body and a nut, and a threaded hole of the nut is matched with the locking screw portion. The utility model discloses, through setting up down the convex part in the bottom of plate two, can be in advance with go-between fixed position, in the time of mounting screw, rely on connecting screw rod portion and the screw hole on the plate two to carry out the thread tightening, after the installation is accomplished, reverse 1/4 circle, nut and locking screw rod portion threaded connection will form the state of a locking like this.

Description

Anti-loosening screw

Technical Field

The utility model relates to a fastener technical field especially relates to an anti-loosening screw.

Background

Many fasteners need to be used in automobile production, including bolt, screw, buckle subassembly etc. wherein the screw connection is simplest, also is the fixed mode that uses the most, and when the car was gone, each part can take place the vibrations of different degrees, and the screw is easy to take place not hard up, and the screw requirement of closing a position needs to have fine locking not hard up (anti-reversion) performance.

The locking screw that moves who uses at present, it is that the direct gasket that adds increases area of contact more, increases the pretightning force, and the result of use is obvious inadequately, for this reason the utility model provides a neotype locking screw that moves.

Disclosure of Invention

The utility model aims at solving the defects existing in the prior art and providing an anti-loosening screw.

In order to realize the purpose, the utility model adopts the following technical scheme: a locking screw comprises a first plate and a second plate, wherein a threaded hole is formed in the second plate, a connecting screw part is in threaded connection with the inner side of the threaded hole, the top end of the connecting screw part is connected with an end part and a hexagonal head, a locking screw part is fixedly connected with the bottom end of the connecting screw part, and the spiral line direction of the outer side threads of the locking screw part is opposite to the spiral line direction of the outer side threads of the connecting screw part;

the bottom of the second plate is provided with a lower convex part, the bottom of the lower convex part is provided with a barrel, the outer edge of the top of the barrel is fixedly connected with a connecting ring, the connecting ring is fixedly connected with the outer side of the lower convex part, the inner side of the barrel is provided with an elastic body and a nut, and a threaded hole of the nut is matched with the locking screw rod part.

As a further description of the above technical solution:

the top end of the inner hole of the nut is provided with an oblique angle, and the bottom end of the locking screw rod portion is provided with a chamfer corresponding to the oblique angle.

As a further description of the above technical solution:

the cross section of the inner side of the cylinder body is polygonal and matched with the nut.

As a further description of the above technical solution:

the bottom end of the cylinder has an inner edge or end plate.

As a further description of the above technical solution:

a through hole is formed in the first plate, and a step hole is formed in the first plate and located above the through hole.

As a further description of the above technical solution:

and a gasket is arranged on the outer side of the connecting screw rod part and on the inner side of the stepped hole.

The utility model discloses following beneficial effect has:

one, compared with the prior art, the utility model discloses locking screw is through setting up down the convex part in the bottom of plate two, can be in advance with go-between fixed position, in the time of the mounting screw, rely on connecting screw portion and the screw hole on the plate two to carry out the thread tightening, the nut can be being pushed up to the bottom of locking screw portion, because the direction of rotation is not right, can not with nut threaded connection, after the installation is accomplished, 1/4 circle reverses, nut and locking screw portion threaded connection, will form the state of a locking like this, realize placing not hard up problem, the influence of vehicle vibration at the back, only can increase the tightness of locking, the not hard up condition can not appear.

Two, compared with the prior art, the utility model discloses locking screw is located the inboard of barrel through setting up elastomer, nut, and the elastomer upwards pushes up it with the nut, makes it all the time can with the bottom contact of locking screw section, but its reversal small-angle just can accomplish being connected of nut and locking screw section, makes the installation very simple, is fit for large batch application on the vehicle.

Drawings

Fig. 1 is a schematic view of a connection state of the anti-loosening screw provided by the present invention;

fig. 2 is a schematic view of the connection state of the anti-loosening screw provided by the present invention;

fig. 3 is an exploded view of the anti-loosening screw according to the present invention;

fig. 4 is a front view of the anti-loosening screw provided by the present invention;

the internal threads of all threaded holes in the drawings are not drawn, and the internal threads in the threaded holes are matched with the corresponding screw portions.

Illustration of the drawings:

1. a first plate; 2. a second plate; 3. connecting a screw rod part; 4. a locking screw part; 5. a hexagonal head; 6. an end portion; 7. a barrel; 8. a connecting ring; 9. an elastomer; 10. a nut; 11. oblique angle; 12. a lower convex portion; 13. a stepped bore.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Referring to fig. 1-4, the utility model provides an anti-loosening screw comprises a plate I1, a plate II 2, a screw hole is provided on the plate II 2, the inside thread of the screw hole is connected with a connecting screw part 3, the top connecting end part 6 of the connecting screw part 3, a hexagonal head 5, the connecting screw part 3 is in thread connection with the plate II 2, the end part 6 of one end of the connecting screw part 3 and the hexagonal head 5 compress the plate I1, the purpose of fastening the plate I1 and the plate II 2 is realized, the bottom end of the connecting screw part 3 is fixedly connected with a locking screw part 4, the helix direction of the outside thread of the locking screw part 4 is opposite to the helix direction of the outside thread of the connecting screw part 3, the fastening of the forward rotation connecting screw part 3 and the fastening of the reverse rotation locking screw part 4 are realized, and a good connecting effect is realized;

the bottom of the second plate 2 is provided with a lower convex portion 12, the lower convex portion 12 is a part of the second plate 2, the bottom of the lower convex portion 12 is provided with a cylinder 7, a connecting ring 8 is fixedly connected to the outer edge of the top of the cylinder 7, the connecting ring 8 is fixedly connected with the outer side of the lower convex portion 12, the connecting ring 8 and the cylinder 7 are of an integral structure, an elastic body 9 and a nut 10 are arranged on the inner side of the cylinder 7, a threaded hole of the nut 10 is matched with the locking screw rod portion 4, the inner side of the cylinder 7 is hexagonal and matched with the nut 10, the nut 10 can be limited to rotate along with the rotation, and the nut 10 and the elastic body 9 can only move up and down.

Referring to fig. 3, in this embodiment, the top end of the inner hole of the nut 10 is provided with an oblique angle 11, and the bottom end of the locking screw part 4 is provided with a chamfer corresponding to the oblique angle 11, so that the bottom end of the locking screw part 4 can be inserted into a taper formed by the oblique angle 11 properly, and errors generated during installation of the connection ring 8 can be avoided, thereby avoiding influence on subsequent installation.

Referring to fig. 3, in the present embodiment, the inner cross-sectional shape of the cylinder 7 is polygonal, and matches the nut 10, so that the nut 10 can only move up and down without rotating.

The bottom end of the cylinder 7 has an inner rim or end plate which acts to restrain the bottom end of the elastic body 9, and the top end of the elastic body 9 exerts an upward force on the nut 10.

Referring to fig. 2, in this embodiment, a through hole is formed in the first plate 1, a step hole 13 is formed in the first plate 1 and located above the through hole, and the step hole 13 is arranged to enable a gap between the bottom of the end portion 6 and the first plate 1 to be buried in the step hole 13, so that a contact surface can be well maintained, a gasket is arranged on the outer side of the connecting screw portion 3 and located on the inner side of the step hole 13, and the gasket is an elastic gasket to ensure that the end portion 6 can always have a certain pre-tightening pressure on the first plate 1.

The installation mode is as follows: firstly, the elastic body 9 and the nut 10 are put into the cylinder body 7, then the connecting ring 8 is sleeved on the lower convex part 12, the side surface of the connecting ring 8 is clamped by using mechanical pliers to be fixed with the lower convex part 12, and the elastic body 9 positioned below pushes the nut 10 upwards to be attached to the bottom end surface of the lower convex part 12; after the first plate 1 is aligned with the second plate 2, the connecting screw part 3 is installed and rotated by a wrench to a predetermined stress, at which time the locking screw part 4 has pushed the nut 10 down a distance, and then is rotated in reverse for 1/4 of a turn, at which time the locking screw part 4 is screwed with the nut 10 to form a double-thread locking state.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a locking screw that moves, includes plate one (1), plate two (2), set up threaded hole on plate two (2), the inboard threaded connection of screw hole has connecting screw portion (3), top connection end portion (6), hexagonal head (5) of connecting screw portion (3), its characterized in that: the bottom end of the connecting screw rod part (3) is fixedly connected with a locking screw rod part (4), and the spiral line direction of the outer side threads of the locking screw rod part (4) is opposite to the spiral line direction of the outer side threads of the connecting screw rod part (3);

the bottom of plate two (2) is provided with down convex part (12), the bottom of convex part (12) is provided with barrel (7) down, edgewise fixedly connected with go-between (8) outside the top of barrel (7), the outside fixed connection of go-between (8) and lower convex part (12), the inboard of barrel (7) is provided with elastomer (9), nut (10), the screw hole and the locking screw rod portion (4) cooperation of nut (10).

2. The anti-loosening screw according to claim 1, wherein: the top end of the inner hole of the nut (10) is provided with an oblique angle (11), and the bottom end of the locking screw rod part (4) is provided with a chamfer corresponding to the oblique angle (11).

3. The anti-loosening screw according to claim 1, wherein: the cross section of the inner side of the cylinder (7) is polygonal and is matched with the nut (10).

4. The anti-loosening screw according to claim 1, wherein: the bottom end of the cylinder (7) is provided with an inner edge or an end plate.

5. The anti-loosening screw according to claim 1, wherein: a through hole is formed in the first plate (1), and a step hole (13) is formed in the first plate (1) and located above the through hole.

6. The anti-loosening screw according to claim 5, wherein: and a gasket is arranged on the outer side of the connecting screw rod part (3) and on the inner side of the stepped hole (13).