CN220600215U

CN220600215U - Anti-drop nut for mounting automobile parts

Info

Publication number: CN220600215U
Application number: CN202322188705.8U
Authority: CN
Inventors: 钱秋芳; 肖善喜; 王媛; 戚国良
Original assignee: Obeio Kunshan Automobile Fastener Co ltd
Current assignee: Obeio Kunshan Automobile Fastener Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-03-15
Anticipated expiration: 2033-08-15

Abstract

The utility model discloses an anti-drop nut for mounting automobile parts, which comprises a nut main body, a limiting piece and a bolt, wherein a first screw hole is formed in the middle of the nut main body, a first through hole is formed in one end of the nut main body, the first through hole is communicated with the first screw hole, a second screw hole is formed in the other end of the nut main body, a conical hole is formed between the second screw hole and the first screw hole, the limiting piece is arranged at one end, far away from the first through hole, of the nut main body, and a second through hole is formed in the middle of the limiting piece. When the nut main body is rotated by external force, under the action of the limiting clamping ring and the limiting clamping block, the nut main body can be rotated by great force, and as the screw thread directions of the second screw hole and the first screw hole are opposite, when the nut main body is unscrewed, the screw thread pipe fitting and the second screw hole are screwed tightly, so that the limiting clamping block is tightly attached to the bolt, and the nut main body is prevented from being unscrewed accidentally by the external force.

Description

Anti-drop nut for mounting automobile parts

Technical Field

The utility model relates to the technical field of fasteners, in particular to a drop-proof nut for mounting automobile parts.

Background

The fastener is a mechanical part which is used for fastening connection and has extremely wide application. The fastener is widely used in the industries including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulic pressure and the like, and can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instruments, articles and the like, so that the fastener is the most widely used mechanical foundation. A nut, which is one type of fastener, can be screwed with a bolt or a screw to perform a fastening function.

When the existing anti-drop nuts are used, nylon rings are arranged at two ends of the nuts, friction between the nuts and the bolts is increased by means of the nylon rings, but the nuts cannot be completely limited on the bolts only by the nylon rings, and the nuts still can be screwed off from the bolts only by applying large force.

For example, the publication number CN218760855U discloses a locking anticreep nut, this patent is through setting up locking anticreep subassembly in the nut, this locking anticreep nut is in the in-service use, can make the internal thread of hexagon nut overcome the defect that causes the freedom to drop because of operation or installation moment are not in place under the combined action of first nylon loop and second nylon loop, this locking anticreep nut screws up in the bolt outside afterwards, the packing ring cover is established in the bolt outside and is arranged between nut main part and the object, and owing to the packing ring both sides all are provided with anti-skidding screw thread, thereby in the actual operation, the packing ring of rubber material can effectually reduce the vibrations that the nut produced with the object contact in the use, simultaneously anti-skidding screw thread can increase the friction between object and the nut main part, and then can further guarantee the locking anticreep effect of hexagon nut, make this locking anticreep nut's locking anticreep effect better, thereby can effectively avoid the phenomenon that the nut appears loosening because the vibrations that produce after a period of using.

However, the patent overcomes the defect that the internal thread of the hexagonal nut is free to fall off due to insufficient operation or installation moment by the first nylon ring and the second nylon ring, only the friction between the hexagonal nut and the bolt can be increased to a certain extent, and the nut can still be unscrewed from the bolt by using enough force.

Therefore, it is necessary to invent a drop nut for automobile parts installation to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a drop-proof nut for mounting automobile parts, which solves the problems that when the existing drop-proof nuts in the prior art are used, nylon rings are arranged at two ends of the nut, friction between the nut and a bolt is increased by means of the nylon rings, but the nut cannot be completely limited on the bolt only by the nylon rings, and the nut can still be screwed off from the bolt only by applying a large force.

In order to achieve the above object, the present utility model provides the following technical solutions: a anticreep nut for auto parts installation, includes nut main part, locating part and bolt, a screw has been seted up in the middle part of the nut main part, a through-hole has been seted up to nut main part one end, a through-hole is linked together with a screw, no. two screws have been seted up to the nut main part other end, the bell mouth has been seted up between No. two screws and the screw, the locating part sets up in the one end that the nut main part kept away from a through-hole, no. two through-holes have been seted up in the middle part of the locating part, the one end fixedly connected with screwed pipe fitting that the locating part is close to the nut main part, screwed pipe fitting and No. two screw threaded connection, the one end fixedly connected with spacing fixture block of locating part is kept away from to the screwed pipe fitting, the bolt runs through nut main part and locating part setting, bolt and No. one screw threaded connection, spacing fixture block extends to inside the bell mouth, spacing fixture block receives behind the extrusion of bell mouth with bolt surface interference connection.

Preferably, the screw thread direction of the screw hole No. two is opposite to that of the screw hole No. one, the number of the limiting clamping blocks is multiple, the limiting clamping blocks are uniformly distributed around the threaded pipe fitting, and when the screw thread direction of the screw hole No. two is opposite to that of the screw hole No. one, the threaded pipe fitting and the screw hole No. two are screwed tightly when the nut main body is unscrewed.

Preferably, the inclination of the limiting clamping block is smaller than that of the conical hole, one end, far away from the threaded pipe fitting, of the limiting clamping block bends towards the bolt, the limiting clamping block is made of plastic materials, and when the threaded pipe fitting is in threaded connection with the second screw hole, the limiting clamping block is pushed into the conical groove by the threaded pipe fitting, and the limiting clamping block is in interference connection with the surface of the bolt after being extruded by the conical hole.

Preferably, the inside fixedly connected with spacing snap ring of through-hole, spacing snap ring is connected with the bolt interference, spacing snap ring is made by rubber material, and when rubber material's spacing snap ring was in interference connected state with the bolt, can increase the friction between nut main part and the bolt, realize the preliminary spacing to the nut main part.

Preferably, the surface of the nut main body is provided with a ring groove, a push-pull ring is connected in the ring groove in a sliding manner, one end of the push-pull ring is fixedly connected with a connecting clamping block, and the connecting clamping block can be pushed out through the push-pull ring.

Preferably, a first clamping groove is formed in one end of the nut main body, and the first clamping groove is communicated with the annular groove.

Preferably, a second clamping groove is formed in one end of the limiting piece, and the second clamping groove is communicated with the first clamping groove.

Preferably, the first clamping groove and the second clamping groove are matched with the connecting clamping block, one end, far away from the push-pull ring, of the connecting clamping block penetrates through the first clamping groove and is clamped with the second clamping groove, and after the connecting clamping block penetrates through the first clamping groove and is clamped with the second clamping groove, the limiting clamping block and the nut main body can be connected together.

In the technical scheme, the utility model has the technical effects and advantages that:

1. when external force rotates the nut main body, under the action of the limiting clamping ring and the limiting clamping block, the nut main body can be rotated with great force, and as the screw thread directions of the second screw hole and the first screw hole are opposite, when the nut main body is unscrewed, the screw thread pipe fitting and the second screw hole are screwed tightly, so that the limiting clamping block is tightly attached to the bolt, and the nut main body is prevented from being unscrewed accidentally by the external force;

2. after the second clamping groove on the limiting clamping block is matched with the first clamping groove on the nut main body, the connecting clamping block is pushed into the second clamping groove through the push-pull ring to be clamped, so that the limiting clamping block is connected with the nut main body together, the limiting clamping block is fixed, and the limiting clamping block is prevented from being accidentally rotated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the overall structure of the present utility model;

FIG. 3 is a schematic view of the structure of the nut body of the present utility model;

FIG. 4 is a cross-sectional view of the structure of the nut body of the present utility model;

fig. 5 is a schematic structural view of the limiting member of the present utility model.

Reference numerals illustrate:

1. a nut body; 2. a limiting piece; 3. a bolt; 4. a first screw hole; 5. a second screw hole; 6. a tapered bore; 7. a threaded pipe fitting; 8. a limit clamping block; 9. a limiting snap ring; 10. a ring groove; 11. pushing the pull ring; 12. connecting a clamping block; 13. and a second clamping groove.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The utility model provides an anti-drop nut for mounting automobile parts, which is shown in figures 1-5, and comprises a nut main body 1, a limiting piece 2 and a bolt 3, wherein a first screw hole 4 is formed in the middle of the nut main body 1, a first through hole is formed in one end of the nut main body 1, the first through hole is communicated with the first screw hole 4, a second screw hole 5 is formed in the other end of the nut main body 1, a conical hole 6 is formed between the second screw hole 5 and the first screw hole 4, the limiting piece 2 is arranged at one end, far away from the first through hole, of the nut main body 1, a second through hole is formed in the middle of the limiting piece 2, a threaded pipe fitting 7 is fixedly connected to one end, close to the nut main body 1, of the limiting piece 7, in threaded connection with a limiting clamping block 8 is fixedly connected to one end, far away from the limiting piece 2, of the bolt 3 penetrates through the nut main body 1 and the limiting piece 2, the bolt 3 is in threaded connection with the first screw hole 4, the limiting clamping block 8 extends into the conical hole 6, and the limiting clamping block 8 is extruded by the conical hole 6 and is in interference connection with the surface of the bolt 3.

In one aspect of this embodiment, the screw hole No. two 5 is opposite with the screw direction of the screw hole No. one 4, the number of the limit clamping blocks 8 is set to a plurality of, a plurality of limit clamping blocks 8 encircle the threaded pipe fitting 7 evenly distributed, the inclination of the limit clamping blocks 8 is smaller than the inclination of the taper hole 6, one end of the limit clamping block 8, which is far away from the threaded pipe fitting 7, bends towards the bolt 3, the limit clamping block 8 is made of plastic material, the limit clamping ring 9 is fixedly connected with the inside of the through hole No. one, the limit clamping ring 9 is in interference connection with the bolt 3, the limit clamping ring 9 is made of rubber material, the annular groove 10 is formed in the surface of the nut main body 1, the push-pull ring 11 is slidingly connected with the inside of the annular groove 10, one end of the push-pull ring 11 is fixedly connected with the connecting clamping block 12, one end of the nut main body 1 is provided with a first clamping groove, the first clamping groove is communicated with the annular groove 10, one end of the limiting piece 2 is provided with a second clamping groove 13, the second clamping groove 13 is communicated with the first clamping groove, the first clamping groove and the second clamping groove 13 are matched with the connecting clamping block 12, and one end, which is far away from the push-pull ring 11, penetrates the first clamping groove and is in the clamping groove 13 and is clamped with the second clamping groove 13.

The working principle of the utility model is as follows:

referring to fig. 1-5 of the specification, when the utility model is used, firstly, one end of a bolt 3 passes through a mounting hole on a part, then the nut main body 1 is screwed on the bolt 3 from the other side of the part, the bolt 3 sequentially passes through a first through hole, a first screw hole 4, a conical hole 6 and a second screw hole 5, the nut main body 1 and the bolt 3 are connected together through the first screw hole 4 in a threaded manner, at the moment, a limit clamping ring 9 in the first through hole is in interference connection with the bolt 3, friction between the nut main body 1 and the bolt 3 is increased, preliminary limit of the nut main body 1 is realized, then a limit part 2 is sleeved on the bolt 3, the limit part 2 is made to be close to the nut main body 1, then the limit part 2 is screwed, a threaded pipe fitting 7 is connected with the second screw hole 5 at one end of the nut main body 1 in a threaded manner, at the moment, a limit clamping block 8 is pushed into the conical groove 6 by the threaded pipe fitting 7, the limit clamping block 8 is in interference connection with the surface of the bolt 3 after being extruded by the taper hole 6, so that the bending part at one end of the limit clamping block 8 is clamped into a thread gap on the surface of the bolt 3, after the second clamping groove 13 on the limit clamping block 8 is matched with the first clamping groove on the nut main body 1, the push-pull ring 11 is pushed along the ring groove, and then the connecting clamping block 12 is driven to pass through the first clamping groove and be clamped with the second clamping groove 13, thereby connecting the limit clamping block 8 with the nut main body 1, further limiting of the nut main body 1 is completed, when the nut main body 1 is rotated by external force, the nut main body 1 can be rotated only by great force under the action of the limit clamping ring 9 and the limit clamping block 8, and when the nut main body 1 is unscrewed due to the opposite thread directions of the second screw hole 5 and the first screw hole 4, the screw pipe fitting 7 can be screwed with the second screw hole 5 more tightly, so that the spacing clamping block 8 is attached with the bolt 3 more tightly, and the nut main body 1 is prevented from being unscrewed accidentally by external force.

Claims

1. A anticreep nut for auto parts installation, includes nut main part (1), locating part (2) and bolt (3), its characterized in that: screw (4) have been seted up in nut main part (1) middle part, a through-hole has been seted up to nut main part (1) one end, a through-hole is linked together with a screw (4), no. two screw (5) have been seted up to nut main part (1) other end, taper hole (6) have been seted up between No. two screw (5) and a screw (4), locating part (2) set up in nut main part (1) one end of keeping away from a through-hole, no. two through-holes have been seted up at locating part (2) middle part, locating part (2) are close to one end fixedly connected with screw (7) of nut main part (1), screw (7) and No. two screw (5) threaded connection, one end fixedly connected with spacing fixture block (8) of locating part (2) are kept away from to screw (7), bolt (3) run through nut main part (1) and locating part (2) set up, bolt (3) and a screw (4) threaded connection, spacing fixture block (8) extend to taper hole (6) inside, interference hole (6) receive behind spacing fixture block (3) and extrusion surface (6).

2. A drop nut for automotive part installation as defined in claim 1, wherein: the screw holes (5) are opposite to the screw holes (4), the number of the limiting clamping blocks (8) is multiple, and the limiting clamping blocks (8) are uniformly distributed around the threaded pipe fitting (7).

3. A drop nut for automotive part installation as defined in claim 1, wherein: the inclination of the limiting clamping block (8) is smaller than that of the conical hole (6), one end, far away from the threaded pipe fitting (7), of the limiting clamping block (8) is bent towards the bolt (3), and the limiting clamping block (8) is made of plastic materials.

4. A drop nut for automotive part installation as defined in claim 1, wherein: the first through hole is internally fixedly connected with a limiting snap ring (9), the limiting snap ring (9) is in interference connection with the bolt (3), and the limiting snap ring (9) is made of rubber materials.

5. A drop nut for automotive part installation as defined in claim 1, wherein: the nut is characterized in that an annular groove (10) is formed in the surface of the nut body (1), a push-pull ring (11) is connected inside the annular groove (10) in a sliding mode, and one end of the push-pull ring (11) is fixedly connected with a connecting clamping block (12).

6. A drop nut for automotive part installation as defined in claim 5, wherein: one end of the nut main body (1) is provided with a first clamping groove which is communicated with the annular groove (10).

7. A drop nut for automotive part installation as defined in claim 6, wherein: and a second clamping groove (13) is formed in one end of the limiting piece (2), and the second clamping groove (13) is communicated with the first clamping groove.

8. A drop nut for automotive part installation as defined in claim 7, wherein: the first clamping groove and the second clamping groove (13) are matched with the connecting clamping block (12), and one end, far away from the push-pull ring (11), of the connecting clamping block (12) penetrates through the first clamping groove and is clamped with the second clamping groove (13).