WO2021128285A1

WO2021128285A1 - Fastening assembly and anti-loosening member

Info

Publication number: WO2021128285A1
Application number: PCT/CN2019/129211
Authority: WO
Inventors: 邹涛; 齐相如; 罗健; 韩福学; 占铁宝
Original assignee: 海能达通信股份有限公司
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-07-01

Abstract

A fastening assembly and an anti-loosening member. A fastening assembly (10) comprises a housing (100), a screw (200), a nut (300), and an anti-loosening member (400). The housing is provided with a limiting portion (110); the screw (200) protrudes out of the housing (100); the nut (300) spirally matches the screw (200), and grooves (310) are formed in the outer surface of the nut (300). The anti-loosening member (400) comprises a gasket (410), elastic clamping arms (420), and elastic oblique arms (430). The gasket (410) is fitted over the screw (200); the elastic clamping arms (420) extend from the gasket (410) and are used for matching the grooves (310) in a snap-fitted manner so as to enable the anti-loosening member (400) and the nut (300) to synchronously rotate with respect to the screw (200); the elastic oblique arms (430) obliquely extend from the gasket (410), are used for being elastically deformed to slide over the top of the limiting portion (110) when the anti-loosening member (400) and the nut (300) are synchronously screwed with respect to the screw (200), and are further used for forming a limiting stopper with the limiting portion (110) to prevent the nut (300) from loosening with respect to the screw (200) when the nut (300) is screwed with respect to the screw (200) and then is subjected to reverse loosening force. The fastening assembly (10) and the anti-loosening member (400) are novel in structure, convenient in use, and good in anti-loosening effect.

Description

Fastening components and anti-loose parts

【Technical Field】

The present invention relates to the technical field of machinery, in particular to a fastening assembly and an anti-loosening component.

【Background technique】

Aviation sockets and various radio frequency sockets are high-frequency components used on special radios and power amplifiers. Most of them are fixed by nuts and ordinary anti-loosening washers. They are prone to loosening during use, especially car power amplifiers, because of the special high frequency. Vibration environment is more likely to cause the nut to loosen.

[Summary of the invention]

The invention provides a fastening assembly and an anti-loosening part, so as to solve the technical problem that common anti-loosening washers in the prior art are prone to looseness during use.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a fastening assembly, which includes:

The shell is provided with a limit part;

Screw, protruding from the housing;

A nut, which is screw-fitted with the screw, and the outer surface of the nut is provided with a groove;

Anti-loosening part, the anti-loosening part includes a washer, an elastic clamping arm and an elastic inclined arm;

among them:

The washer is used to sleeve on the screw;

The elastic clamping arm extends from the washer and is used for snap-fitting with the groove so that the anti-loosening member can rotate synchronously with the nut relative to the screw;

The elastic inclined arm extends obliquely from the washer, and is used for being able to elastically deform so as to slide over the top of the limiting portion when the anti-loosening member and the nut are screwed to the screw synchronously, and are also used for When the nut is tightened with respect to the screw and then receives a reverse loosening force, it forms a limit stop with the limiting portion to prevent the nut from loosening relative to the screw.

According to an embodiment of the present invention, the gasket includes a main ring and a protruding piece extending from the outer periphery of the main ring, the root of the elastic inclined arm is connected with the protruding piece, and the free of the elastic oblique arm The end is disconnected from the main ring.

According to an embodiment of the present invention, the lug has an outer side away from the main ring and two end sides connecting the main ring, and the root of the elastic inclined arm and one of the lugs The end side is connected.

According to an embodiment of the present invention, there are a plurality of the protrusions and extend horizontally outward relative to the main ring, and one of the end sides of each protrusion is connected with the elastic inclined arm.

According to an embodiment of the present invention, there are a plurality of the elastic clamping arms and each of them includes a first arm body and a second arm body sequentially extending from the outer periphery of the main ring, the first arm body and the second arm body The two arms are connected in a bend, wherein the first arm body is inclined inward so that the connection between the first arm body and the second arm body constitutes a contact point for snap-fitting with the groove, and a plurality of The second arm body extends obliquely outward.

According to an embodiment of the present invention, the elastic clamping arm and the elastic oblique arm are arranged alternately at intervals.

According to an embodiment of the present invention, the anti-loosening member is a metal integral structural member.

According to an embodiment of the present invention, the limiting portion is a plurality of ribs distributed in a ring shape, or the limiting portion is a corrugated surface or a convex tooth surface arranged in a ring shape.

According to an embodiment of the present invention, the housing is provided with a through hole to allow the screw to pass through.

According to an embodiment of the present invention, the through hole has a circular arc side and a straight side, the screw rod is provided with a circular arc surface and a flat surface correspondingly, and the screw and the housing constitute a barrier through the flat surface and the linear side. Transfer to cooperate.

According to an embodiment of the present invention, the housing and the screw are an integral structure or a separate structure.

According to an embodiment of the present invention, the screw is an aviation plug.

According to an embodiment of the present invention, the groove includes a plurality of grooves for receiving the elastic clamping arm and for receiving the insertion of an assembly tool.

In order to solve the above technical problems, another technical solution adopted by the present invention is to provide an anti-loosening member, the anti-loosing member comprising a gasket, an elastic clamping arm and an elastic oblique arm that are connected, wherein:

The washer is used to sleeve on the screw;

The elastic clamping arm extends from the washer and is used for snap-fitting with a nut provided with a groove so that the anti-loosening member can rotate relative to the screw in synchronization with the nut;

The elastic inclined arm extends obliquely from the washer, and is used for being able to elastically deform so as to slide over the top of the limiting portion when the anti-loosening member and the nut are screwed to the screw synchronously, and are also used for When the nut is tightened relative to the screw and then receives a reverse loosening force, it forms a limit stop with the housing provided with a limit portion to prevent the nut from loosening relative to the screw.

The beneficial effects of the present invention are: different from the prior art, the fastening assembly and the anti-loosening part provided by the present invention have novel structure and convenient use, and the anti-loosing part can be snap-fitted with the nut provided with the groove through the elastic clamping arm In turn, the anti-loosening element can rotate relative to the screw in synchronization with the nut. The anti-loosing element can also form a limit stop with the limit part to prevent the nut from rotating relative to the screw through the elastic inclined arm when the nut is tightened relative to the screw and then receives the reverse loosening force. Loose, the anti-loose effect is better.

【Explanation of the drawings】

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

FIG. 1 is a schematic diagram of a three-dimensional structure of a fastening assembly provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of the fastening assembly shown in Fig. 1;

FIG. 3 is a three-dimensional structural diagram of the anti-loosening part of the fastening assembly shown in FIG. 1;

4 is a schematic diagram of the three-dimensional structure of the housing of the fastening assembly shown in FIG. 1;

Fig. 5 is a schematic diagram of the cooperation of a fastening component and a disassembly tool provided by an embodiment of the present invention.

【Detailed ways】

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain that it is in a specific posture (as shown in the drawings). If the specific posture changes, the relative positional relationship, movement, etc. of the components below will also change the directional indication accordingly.

In addition, if there are descriptions related to "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and cannot be understood as instructions or implications Its relative importance or implicitly indicates the number of technical features indicated. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the protection scope of the present invention.

Please refer to FIGS. 1 to 4 together. The present invention provides a fastening assembly 10. The fastening assembly 10 includes a housing 100, a screw 200, a nut 300, and an anti-loosening member 400.

The screw 200 protrudes from the housing 100. The screw 200 can be an aviation plug or other components that require anti-rotation measures. The housing 100 is provided with a limiting portion 110 on the periphery of the screw 200, and the limiting portion 110 can be a ring. A plurality of ribs distributed in a ring shape, or the limiting portion 110 is a corrugated surface or a convex tooth surface arranged in a ring shape.

The housing 100 and the screw 200 may be an integral structure or a separate structure. When the housing 100 and the screw 200 are of a separate structure, the housing 100 is provided with a through hole 120 to allow the screw 200 to pass through, and the through hole 120 may have a rounded edge. 122 and the linear side 124, the screw 200 is provided with a circular arc surface and a flat surface correspondingly, and the screw 200 and the housing 100 form an anti-rotation fit through the flat and the linear side 124.

The shape of the housing 100 is not limited to that shown in the drawings, and can be any other shape. The key is that the housing 100 is provided with a limiting portion 110 on the periphery of the screw 200.

The nut 300 is screwed with the screw 200, and the outer surface of the nut 300 is provided with a plurality of grooves 310.

The anti-loosening element 400 includes a washer 410, an elastic clamping arm 420 and an elastic inclined arm 430.

Among them, the washer 410 is used to sleeve the screw 200; the elastic clamping arm 420 extends from the washer 410 and is used for snap-fitting with the groove 310 on the nut 300 so that the anti-loosening member 400 can rotate with the nut 300 relative to the screw 200 synchronously. The elastic inclined arm 430 extends obliquely from the washer 410, and is used to elastically deform to slide over the top of the limit portion 110 when the anti-loosening member 400 and the nut 300 are tightened synchronously relative to the screw 200, and also used for the nut 300 relative to the screw 200 When the screw is tightened and then receives a reverse loosening force, it forms a limit stop with the limit part 110 to prevent the nut 300 from loosening relative to the screw 200.

The elastic inclined arm 430 has a certain included angle relative to the washer 410, and the included angle may be 20 degrees, 30 degrees, or 40 degrees.

In one embodiment, the washer 410 may include a main ring 412 and a protrusion 414 extending from the outer periphery of the main ring 412, the root of the elastic inclined arm 430 is connected to the protrusion 414, and the free end of the elastic inclined arm 430 is connected to the main ring The ring 412 is in an off setting.

The tab 414 has an outer side 416 away from the main ring 412 and two end sides 418 connected to the main ring 412. The root of the elastic inclined arm 430 is connected to one end side 418 of the tab 414.

There are a plurality of protruding pieces 414 (for example, three in the figure) and extend horizontally outward relative to the main ring 412, and one end side 418 of each protruding piece 414 is connected with an elastic inclined arm 430.

There are a plurality of elastic clamping arms 420 (for example, three in the figure) and each includes a first arm body 422 and a second arm body 424 extending sequentially from the outer periphery of the main ring 412, the first arm body 422 and the second arm body The first arm body 422 is inclined inwardly so that the connection between the first arm body 422 and the second arm body 424 forms a contact point for snap-fitting with the groove 310, and the plurality of second arm bodies 424 face Extend obliquely outside.

The elastic clamping arm 420 and the elastic inclined arm 430 are arranged alternately at intervals. The anti-loosening member 400 is a metal integral structural member, which can be made of a metal material with good elasticity and rigidity. In some specific applications, the anti-loosing member 400 can also be made of a plastic material.

The groove 310 includes a plurality of (for example, 6), of which a part of the groove 310 (for example, 3 grooves 310) is used for accommodating the elastic clamping arm 420, and the other part of the groove 310 (for example, 3 or 6 grooves 310) is used for When the assembling tool 20 is received, a plurality of inserting arms 22 are provided at one end of the assembling tool 20. The inserting arms 22 can extend into the groove 310 to drive the nut 300 to rotate. When the nut 300 needs to be disassembled, the inserting arm 22 can The elastic clamping arm 420 is pushed outwards, so that the elastic clamping arm 420 exits the groove 310, and the linkage relationship between the nut 300 and the anti-loosening member 400 is released. In order to facilitate the tightening and unscrewing operations of the assembly tool 20, the fitting arm 22 of the assembly tool 20 can have two length specifications, of which the smaller length of the fitting arm 22 can be used exclusively for the tightening operation, and it extends into the groove 310 will not affect the snap fit between the elastic clamping arm 420 and the groove 310. The longer inserting arm 22 can be used for the loosening operation. The longer inserting arm 22 must be used for the loosening operation. The arm 420 is pushed outwards, so that the elastic clamping arm 420 exits the groove 310, and the linkage relationship between the nut 300 and the anti-loosening member 400 is released.

Please continue to refer to FIGS. 1 to 4, the present invention also provides an anti-loosening element 400, which includes a washer 410, an elastic clamping arm 420 and an elastic inclined arm 430 connected to each other.

Among them, the washer 410 is used to sleeve the screw 200; the elastic clamping arm 420 extends from the washer 410 and is used for snap-fitting with the nut 300 provided with the groove 310 so that the anti-loosening member 400 can be synchronously opposed to the screw 200 with the nut 300 Rotation; the elastic inclined arm 430 extends obliquely from the washer 410, and is used to elastically deform to slide over the top of the housing 100 provided with the limiting portion 110 when the anti-loosening member 400 and the nut 300 are tightened relative to the screw 200 synchronously, and also used for When the nut 300 is tightened relative to the screw 200 and then receives a reverse loosening force, it forms a limit stop with the limiting portion 110 to prevent the nut 300 from loosening relative to the screw 200.

In one embodiment, the washer 410 includes a main ring 412 and a protrusion 414 extending from the outer periphery of the main ring 412, the root of the elastic inclined arm 430 is connected to the protrusion 414, and the free end of the elastic inclined arm 430 is connected to the main ring 412 is in a disconnected setting.

The protrusions 414 are multiple and extend horizontally outward relative to the main ring 412. One end side 418 of each protrusion 414 is connected with an elastic inclined arm 430.

There are a plurality of elastic clamping arms 420 and each includes a first arm body 422 and a second arm body 424 extending sequentially from the outer periphery of the autonomous ring 412. The first arm body 422 and the second arm are connected in a bend, wherein the first arm The body 422 is inclined inward so that the connection between the first arm body 422 and the second arm body 424 forms a contact point for snap-fitting with the groove 310, and the plurality of second arm bodies 424 extend outwardly.

The fastening assembly 10 and the anti-loosening element 400 provided by the present invention have novel structure and convenient use. The anti-loosening element 400 can be snap-fitted with the nut 300 provided with the groove 310 through the elastic clamping arm 410 so that the anti-loosing element 400 can be engaged with the nut. 300 rotates synchronously with respect to the screw 200, and the anti-loosening member 400 can also form a limit stop with the limit part 110 through the elastic inclined arm 430 when the nut 300 is tightened relative to the screw 200 and then receives a reverse loosening force to prevent the nut 300 from relative to the screw. 200 loosening, better anti-loosening effect.

The above are only the embodiments of the present invention and do not limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, The same reasoning is included in the scope of patent protection of the present invention.

Claims

A fastening component, characterized in that, the fastening component includes:

The shell is provided with a limit part;

Screw, protruding from the housing;

A nut, which is screw-fitted with the screw, and the outer surface of the nut is provided with a groove;

Anti-loosening part, the anti-loosening part includes a washer, an elastic clamping arm and an elastic inclined arm;

among them:

The washer is used to sleeve on the screw;

The elastic clamping arm extends from the washer and is used for snap-fitting with the groove so that the anti-loosening member can rotate synchronously with the nut relative to the screw;

The elastic inclined arm extends obliquely from the washer, and is used for being able to elastically deform so as to slide over the top of the limiting portion when the anti-loosening member and the nut are screwed to the screw synchronously, and are also used for When the nut is tightened with respect to the screw and then receives a reverse loosening force, it forms a limit stop with the limiting portion to prevent the nut from loosening relative to the screw.
The fastening assembly according to claim 1, wherein the gasket comprises a main ring and a tab extending from the outer periphery of the main ring, and the root of the elastic inclined arm is connected with the tab , The free end of the elastic inclined arm is disconnected from the main ring.
The fastening assembly according to claim 2, wherein the protruding piece has an outer side away from the main ring and two end sides connecting the main ring, and the elastic inclined arm The root is connected with one of the side edges of the protruding piece.
The fastening assembly according to claim 3, wherein there are a plurality of the protrusions and extend horizontally outward relative to the main ring, and one of the side edges of each of the protrusions is connected with述flexible oblique arm.
The fastening assembly according to claim 1, wherein there are a plurality of the elastic clamping arms and each includes a first arm body and a second arm body extending from the outer periphery of the main ring in sequence, and The first arm body and the second arm are connected in a bend, wherein the first arm body is inclined inwardly so that the connection between the first arm body and the second arm body is formed to be engaged with the groove At the abutment point of the snap fit, a plurality of the second arm bodies extend obliquely outward.
The fastening assembly according to claim 1, wherein the elastic clamping arm and the elastic oblique arm are arranged alternately at intervals.
The fastening assembly according to claim 1, wherein the anti-loosening member is a metal integral structural member.
The fastening assembly according to claim 1, wherein the limiting portion is a plurality of ribs distributed in a ring shape, or the limiting portion is a corrugated surface or a convex surface arranged in a ring shape. Tooth surface.
The fastening assembly according to claim 1, wherein the housing is provided with a through hole to allow the screw to pass through.
The fastening assembly according to claim 8, wherein the through hole has a circular arc side and a straight side, the screw rod is provided with a circular arc surface and a flat surface correspondingly, and the screw rod and the housing pass through the The plane and the straight edge form an anti-rotation fit.
The fastening assembly according to claim 1, wherein the housing and the screw are an integral structure or a separate structure.
The fastening assembly according to claim 1, wherein the screw is an aviation plug.
The fastening assembly according to claim 1, wherein the groove includes a plurality of grooves for receiving the elastic clamping arm and for receiving insertion of an assembly tool.
An anti-loosening component, characterized in that the anti-loosing component includes a washer, an elastic clamping arm and an elastic inclined arm that are connected to each other, wherein:

The washer is used to sleeve on the screw;

The elastic clamping arm extends from the washer and is used for snap-fitting with a nut provided with a groove so that the anti-loosening member can rotate relative to the screw in synchronization with the nut;

The elastic inclined arm extends obliquely from the washer, and is used for being able to elastically deform to slide over the top of the housing provided with a limiting portion when the anti-loosening member and the nut are screwed to the screw synchronously, and It is used to form a limit stop with the limit part to prevent the nut from loosening relative to the screw when the nut receives a reverse loosening force after being tightened relative to the screw.
The anti-loosening element according to claim 14, wherein the gasket comprises a main ring and a protruding piece extending from the outer periphery of the main ring, and the root of the elastic inclined arm is connected to the protruding piece , The free end of the elastic inclined arm is disconnected from the main ring.
The anti-loosening component according to claim 15, wherein the protruding piece has an outer side away from the main ring and two end sides connecting the main ring, and the elastic inclined arm The root is connected with one of the side edges of the protruding piece.
The anti-loosening element according to claim 16, wherein there are a plurality of the protrusions and extend horizontally outward relative to the main ring, and one of the side edges of each of the protrusions is connected with述flexible oblique arm.
The anti-loosening element according to claim 14, wherein the elastic clamping arms are plural and each includes a first arm body and a second arm body extending from the outer periphery of the main ring in sequence, and The first arm body and the second arm are connected in a bend, wherein the first arm body is inclined inwardly so that the connection between the first arm body and the second arm body is formed to be engaged with the groove At the abutment point of the snap fit, a plurality of the second arm bodies extend obliquely outward.
The anti-loosening component according to claim 14, wherein the elastic clamping arm and the elastic oblique arm are arranged alternately at intervals.
The anti-loosening component according to claim 14, wherein the anti-loosing component is a metal integral structural component.