Connector with anti-loosening function

Abstract

The present invention relates to the technical field of connectors, and particularly to a connector with a loosening prevention function. It includes: a fixing member, which forms one of the plug or the socket, and an outwardly protruding loosening prevention arm is formed on the side wall of the fixing member; a screwing member, which forms the other of the plug or the socket, and the screwing member can rotate around the axis of the fixing member to form a rotation direction for connecting the fixing member and the screwing member; a snap ring, which is arranged between the screwing member and the fixing member; the snap ring is formed with a loosening prevention groove, and the loosening prevention groove abuts against the loosening prevention arm to block the screwing member from rotating away from the rotation direction. The structure of the present invention is simple, the number of components is small, it is convenient for connection and assembly, and the loosening prevention effect is good and the reliability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and more particularly to a connector with a loosening prevention function. Background Art

[0002] Connectors are used for the interconnection between devices. The commonly used connectors in industrial production are circular. A circular connector is a type of connector with a basic cylindrical structure and a circular mating surface. The connector includes a plug and a socket, and information transmission is achieved through the insertion between the plug and the socket. To ensure a tight connection and reliable use, the connector needs to have a certain loosening prevention effect to improve the reliability of the connector, so that it remains in a tightly connected state when the connector is affected by external forces such as vibration or impact, thereby avoiding the failure of information transmission due to loosening. However, the existing loosening prevention structures of connectors are complex, with many mating parts and a cumbersome connection process. For example, it is necessary to cooperate through holes and pins, etc., which increases the manufacturing difficulty and cost; in addition, most of the existing loosening prevention structures are only provided at one end of the connector, such as only providing a loosening prevention structure at the plug or the socket, and it is impossible to achieve loosening prevention at both ends. Summary of the Invention

[0003] In view of this, the purpose of the present application is to provide a connector with a loosening prevention function to solve the problems of complex structure, many mating parts, and cumbersome connection process in the existing loosening prevention structure of connectors.

[0004] The present invention provides a connector with a loosening prevention function, including a plug and a socket of the connector. Among them, the connector with a loosening prevention function further includes:

[0005] A fixing member, which forms one of the plug or the socket. An outwardly protruding anti-loosening arm is formed on the side wall of the fixing member.

[0006] A screwing member, which forms the other of the plug or the socket. The screwing member can rotate around the axis of the fixing member to form a rotation direction for connecting the fixing member and the screwing member.

[0007] A snap ring is arranged between the screwing member and the fixing member; the snap ring is formed with an anti-loosening groove, and the anti-loosening groove abuts against the anti-loosening arm to prevent the screwing member from rotating away from the rotation direction.

[0008] Preferably, an annular groove recessed inward is formed on the side wall of the fixing member. The snap ring can be embedded in the annular groove. The anti-loosening arm is formed in the annular groove. The anti-loosening arm extends in the rotation direction to form a cantilever structure; the cantilever structure forms an angle with the fixing member.

[0009] Preferably, the anti-loosening arm is elastic, such that when the snap ring rotates relative to the fixing member, the anti-loosening arm swings as the shape of the anti-loosening groove changes, and the anti-loosening arm contacts the anti-loosening groove at any instant during the swing.

[0010] Preferably, a plurality of the anti-loosening arms are provided, and the plurality of anti-loosening arms are evenly distributed along the circumferential direction of the fixing member.

[0011] Preferably, a free end of the anti-loosening arm is formed with an anti-loosening portion that is shaped to fit the anti-loosening groove; the anti-loosening arm is formed into a bent structure, and the bent anti-loosening arm causes the anti-loosening portion to approach the fixing member.

[0012] Preferably, the anti-loosening groove is formed on an inner wall of the snap ring, and the anti-loosening groove is formed into a plurality of concave arc-shaped structures; the anti-loosening portion is formed into an arc-shaped convex structure.

[0013] Preferably, the plurality of concave arc-shaped structures are connected to each other to form a plurality of convex pointed portions; the arc-shaped convex structure is disposed between two adjacent pointed portions.

[0014] Preferably, the snap ring is formed of an elastic material; a side wall of the snap ring is formed with a break, and an extending direction of the break is disposed at an angle to an axis of the snap ring, and the break causes two ends of the snap ring to form a wedge-shaped structure; when the snap ring is squeezed by the screwing member and the fixing member, the two ends of the snap ring can be closed.

[0015] Preferably, the screwing member is formed with a clamping groove that is recessed toward the snap ring, and the snap ring is formed with a clamping key that protrudes toward the screwing member, and the clamping key is connected to the clamping groove to fix a position of the snap ring on the screwing member;

[0016] An inner wall of the screwing member is recessed to form an annular clamping groove, the snap ring is disposed in the clamping groove, and the clamping groove is formed at an end of the screwing member close to the snap ring and communicates with the clamping groove;

[0017] The clamping key protrudes outward from a side wall of the snap ring to abut against the clamping groove, such that the snap ring rotates synchronously with the screwing member.

[0018] Preferably, the screwing member is formed into an annular structure, and the fixing member protrudes toward the screwing member to extend into the annular structure of the screwing member.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The connector with an anti-loosening function of the present invention has a simple structure, a small number of components, is convenient for connection and assembly, and has good anti-loosening effect and high reliability.

[0021] To make the above objects, features, and advantages of the present application more obvious and understandable, the following provides preferred embodiments in conjunction with the accompanying drawings and makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic assembly structure diagram of a connector with a loosening prevention function provided by an embodiment of the present invention;

[0024] Figure 2 Perspective view of the assembly structure of a connector with a loosening prevention function provided by an embodiment of the present invention;

[0025] Figure 3 Exploded structure schematic diagram of a connector with a loosening prevention function provided by an embodiment of the present invention;

[0026] Figure 4 Schematic structure diagram of a fixing member in a connector with a loosening prevention function provided by an embodiment of the present invention;

[0027] Figure 5 Schematic structure diagram of a snap ring in a connector with a loosening prevention function provided by an embodiment of the present invention;

[0028] Figure 6 Schematic structure diagram of a snap ring in a connector with a loosening prevention function from another perspective provided by an embodiment of the present invention;

[0029] Figure 7 Cross-sectional view of the assembly structure of a connector with a loosening prevention function provided by an embodiment of the present invention;

[0030] Figure 8 Schematic structure diagram of a screwing member in a connector with a loosening prevention function provided by an embodiment of the present invention.

[0031] Reference numerals: 10 - fixing member; 11 - anti-loosening arm; 111 - anti-loosening portion; 12 - displacement groove; 20 - screwing member; 21 - clamping groove; 22 - card slot; 30 - snap ring; 31 - clamping key; 32 - anti-loosening groove; 33 - fracture. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following specific embodiments are provided to assist the reader in obtaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, apparatuses, and / or systems described herein will be apparent. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, changes that will be apparent after understanding the disclosure of the present application may be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

[0033] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatuses, and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0034] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on," "connected to," "coupled to," "above," or "covering" another element, it can be directly "on," "connected to," "coupled to," "above," or "covering" the other element, or there can be one or more other elements intervening therebetween. In contrast, when an element is described as being "directly on," "directly connected to," "directly coupled to," "directly above," or "directly covering" another element, there can be no other elements intervening therebetween.

[0035] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0036] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another. Thus, the first member, component, region, layer, or portion described in the examples herein may also be referred to as the second member, component, region, layer, or portion without departing from the teachings of the examples.

[0037] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is flipped, an element described as "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations of "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0038] The terms used herein are for the purpose of describing various examples only and are not intended to limit the present disclosure. Unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. The terms "comprising", "including", and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0039] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the accompanying drawings may occur. Accordingly, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that occur during manufacturing.

[0040] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have a variety of configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0041] According to the present invention, a connector with a loosening prevention function is provided, which includes a fixing member 10, a screwing member 20, and a snap ring 30.

[0042] Hereinafter, the specific structures of the above components of the connector with a loosening prevention function according to the present embodiment will be described.

[0043] In the present embodiment, as Figures 1 to 8 shown, the connector is formed as a circular connector, including a socket and a plug, that is, the structure of the connector is formed in a cylindrical or annular shape; the plug and socket of the connector are connected in a screwed manner.

[0044] In the present embodiment, as Figures 1 to 8As shown, the fixing member 10 is formed as one of a plug or a socket, the screwing member 20 is formed as the other of the plug or the socket, the snap ring 30 is disposed between the screwing member 20 and the fixing member 10, and a loosening prevention structure is formed between the snap ring 30 and the fixing member 10 or the screwing member 20, so that both ends of the connector have a loosening prevention function.

[0045] In this embodiment, as Figures 1 to 8 shown, the screwing member 20 is formed with a clamping groove 21 recessed toward the snap ring 30, the snap ring 30 is formed with a clamping key 31 protruding toward the screwing member 20, and the clamping key 31 is connected to the clamping groove 21 to fix the position of the snap ring 30 on the screwing member 20, thereby forming a circumferential fixing constraint; the clamping key 31 protrudes outward from the side wall of the snap ring 30 to abut against the clamping groove 21, so that the snap ring 30 and the screwing member 20 rotate synchronously. Specifically, the clamping key 31 extends from the top of the snap ring 30 to the side wall of the snap ring 30 and is formed into an L-shaped structure, and its bearing surface is the two side portions of the L-shaped structure of the clamping key 31. The L-shaped structure can increase the contact area between the clamping key 31 and the screwing member 20, so that the snap ring 30 and the screwing member 20 can rotate or stop synchronously, making the loosening prevention effect more reliable.

[0046] In addition, in this embodiment, as Figures 1 to 8 shown, the inner wall of the screwing member 20 is recessed to form an annular clamping groove 22, and the clamping groove 22 forms a predetermined distance from the end of the screwing member 20. The predetermined distance is adapted to the height of the clamping key 31 protruding from the top of the snap ring 30, so that the top of the clamping key 31 is flush with the end of the screwing member 20; the snap ring 30 is disposed in the clamping groove 22, and the height of the snap ring 30 is adapted to the height of the clamping groove 22, so that the outer ring portion of the snap ring 30 is embedded in the clamping groove 22 (the inner ring portion of the snap ring 30 is embedded in the annular groove of the following fixing member 10) to form an axial fixing constraint and prevent the snap ring 30 from moving axially along the screwing member 20. The clamping groove 21 is formed at the end of the screwing member 20 close to the snap ring 30 and communicates with the clamping groove 22, so that the outer ring portion of the snap ring 30 is embedded in the clamping groove 21 and the clamping groove 22 of the screwing member 20, thereby ensuring the stable connection between the snap ring 30 and the screwing member 20 and avoiding loosening or separation.

[0047] In this embodiment, as Figures 1 to 8 shown, the side wall of the fixing member 10 is formed with a loosening prevention arm 11 protruding outward; the structure of the loosening prevention arm 11 is as Figure 7As shown, an included angle is formed by inward depression of the side wall of the fixing member 10 with a cylindrical structure. The included angle is provided between the anti-loosening arm 11 and the fixing member 10. The anti-loosening arm 11 and the fixing member 10 are preferably of an integral structure. The snap ring 30 is formed with an anti-loosening groove 32. The screwing member 20 can drive the snap ring 30 to rotate about the axis of the fixing member 10 to form a rotation direction for connecting the fixing member 10 and the screwing member 20, so that the connector is formed with a predetermined rotation direction for connecting the plug and the socket. The anti-loosening groove 32 abuts against the anti-loosening arm 11 to block the screwing member 20 from rotating in the direction opposite to the rotation direction. In this way, the connector after connection cannot rotate in the direction opposite to the rotation direction, which realizes effective anti-loosening.

[0048] In this embodiment, as Figures 1 to 8 shown, the rotation direction can be clockwise or counterclockwise. The rotation direction is the same as the extending direction of the anti-loosening arm 11, so that the screwing member 20 provided with the snap ring 30 has less resistance and is convenient for connection when rotating along the rotation direction (clockwise or counterclockwise) with the fixing member 10, while has greater resistance when rotating in the direction opposite to the rotation direction (counterclockwise or clockwise), thereby realizing anti-loosening. As Figure 7 shown, the direction indicated by the arrow is the rotation direction of the screwing member 20 and the snap ring 30. At this time, the rotation direction is counterclockwise. When the rotation direction needs to be clockwise, the extending direction of the anti-loosening arm 11 is Figure 7 opposite.

[0049] In this embodiment, as Figures 1 to 8 shown, the side wall of the fixing member 10 is formed with an annular groove recessed inwardly thereof. The inner ring portion of the snap ring 30 can be embedded in the annular groove to increase the contact area between the fixing member 10 and the snap ring 30, making the anti-loosening effect more reliable; the anti-loosening arm 11 is arranged in the annular groove, and the anti-loosening arm 11 extends in the rotation direction to form a long cantilever structure (such as a cantilever beam structure); one end of the cantilever structure is formed as a fixed end connected to the main body of the fixing member 10, and the other end of the cantilever structure is formed as a free end. The long cantilever structure and the side wall of the fixing member 10 form an included angle, and the included angle is formed as an acute angle. If the included angle is too small, the anti-loosening effect will not be obvious. If the included angle is too large, the anti-loosening resistance will be too large. Therefore, the included angle is preferably formed as 10° to 20°, so as to ensure reliable abutment between the anti-loosening arm 11 and the anti-loosening groove 32 and enable effective anti-loosening effect when the screwing member 20 rotates. In addition, an arc transition is adopted at the included angle (that is, a fillet is provided at the connection between the fixed end of the anti-loosening arm 11 and the fixing member 10) to prevent stress concentration.

[0050] In this embodiment, as Figures 1 to 8As shown, the anti-loosening arm 11 has a certain elasticity. For example, the anti-loosening arm 11 can be formed as a plastic part, so that the anti-loosening arm 11 can swing when the snap ring 30 rotates relative to the fixed part 10. The anti-loosening arm 11 is in contact with the snap ring 30 at any instant during the swing. When the anti-loosening arm 11 swings, the angle formed by it and the side wall of the fixed part 10 changes. The change range of the angle of the included angle is related to the structural shape of the anti-loosening groove 32. If the change range of the included angle is too large, during the continuous screwing process, it may cause the anti-loosening arm 11 to deform too much, generate greater stress, and reduce its service life. Therefore, the change range of the angle of the included angle is preferably within 5°. In this way, it is avoided that the excessive swing range causes a large elastic deformation at the connection between the anti-loosening arm 11 and the fixed part 10 (i.e., the fixed end of the anti-loosening arm 11), thereby improving the strength and service life of the anti-loosening arm 11. For example, when the included angle of the fixed part 10 is 15° in the normal state, when the screwing part 20 is rotatably connected to the fixed part 10, the anti-loosening arm 11 swings with the change of the shape of the anti-loosening groove 32, and the included angle can change between 10° and 15°.

[0051] In this embodiment, as Figures 1 to 8 shown, a plurality of anti-loosening arms 11 are provided. For example, the anti-loosening arms 11 can be provided in two to ensure reliable anti-loosening. The plurality of anti-loosening arms 11 are evenly distributed along the circumference of the fixed part 10, and the extending directions of the plurality of anti-loosening arms 11 are the same as the rotation direction of the screwing part 20, so as to ensure that the plurality of anti-loosening arms 11 are uniformly stressed and the anti-loosening effect is stable and reliable.

[0052] In addition, in this embodiment, as Figure 4 shown, displacement grooves 12 corresponding to the anti-loosening arms 11 are formed on the side wall of the fixed part 10. The displacement grooves 12 are arranged on both side parts in the length direction of the anti-loosening arm 11. The size of the displacement grooves 12 is adapted to the size of the anti-loosening arm 11. When the anti-loosening arm 11 has a displacement along the axis direction of the fixed part 10, the displacement spaces capable of accommodating the anti-loosening arm 11 are formed by the displacement grooves 12 on both sides, so as to avoid the connector assembly being stuck due to the anti-loosening arm 11 abutting against the fixed part 10.

[0053] In this embodiment, as Figures 1 to 8 shown, an anti-loosening portion 111 that is shaped and fitted to the anti-loosening groove 32 is formed at the free end of the anti-loosening arm 11. The anti-loosening arm 11 is formed into a bent structure. The bent anti-loosening arm 11 makes the anti-loosening portion 111 approach the fixed part 10, making the screwing and assembling process of the connector simpler and more labor-saving. In a preferred embodiment, the curvature of the anti-loosening arm 11 is consistent with the curvature of the side wall of the fixed part 10, so that the anti-loosening arm 11 is smoothly and transitionally connected to the fixed part 10, avoiding the situation where structures such as bending inflection points are prone to cause stress concentration.

[0054] In this embodiment, as Figures 1 to 8As shown, the card slot 22 of the screwing member 20 and the annular groove of the fixing member 10 are correspondingly arranged in the state where the connection and assembly are completed, and the two slots are buckled to form an annular channel capable of accommodating the snap ring 30; the anti-loosening groove 32 is preferably formed on the inner wall of the snap ring 30, so that the anti-loosening groove 32 can abut against the anti-loosening arm 11. The top, bottom and outer wall of the snap ring 30 are surrounded by the card slot 22 of the screwing member 20 or the annular groove of the fixing member 10, ensuring that the connecting members are closely fitted and the contact surface of the fit is large, making the anti-loosening structure more reliable and the anti-loosening effect more significant.

[0055] In this embodiment, as Figures 1 to 8 shown, the anti-loosening groove 32 is formed into a plurality of concave arc structures, and the arc structure can be a symmetric semi-circular structure; the anti-loosening part 111 protrudes towards the anti-loosening groove 32 and is formed into a circular arc-shaped convex structure to improve the smoothness during the screwing and rotation of the connector and cause less wear. The ratchet-like structure has greater wear and may cause the anti-loosening arm 11 to break due to stress concentration at a certain instant during rotation due to jamming. Therefore, the circular arc-shaped anti-loosening groove 32 is more smooth and causes less wear when cooperating with the anti-loosening arm 11; in addition, the fixing member 10 is preferably formed into a mold part, and the advantage of the circular arc-shaped structure is more conducive to mold forming to ensure the processing quality of the fixing member 10.

[0056] In a preferred embodiment, as Figures 1 to 8 shown, a plurality of concave arc structures are connected to each other to form a plurality of protruding tips. The arc structures and the tips are alternately and continuously arranged. After the connector is screwed in place, it is ensured that the anti-loosening part 111 and the anti-loosening groove 32 are correspondingly arranged, so as to ensure that the anti-loosening structure is effective and the anti-loosening effect is reliable; the circular arc-shaped convex structure is arranged between two adjacent tips, and the continuous arc structure enables the anti-loosening part 111 to achieve the anti-loosening effect at any arc structure position, thereby improving the anti-loosening reliability of the connector.

[0057] In this embodiment, as Figures 1 to 8 shown, the snap ring 30 is formed of an elastic material; a break 33 is formed on the side wall of the snap ring 30. The break 33 and the clamping key 31 can be arranged facing each other on the snap ring 30. The extending direction of the break 33 is set at an angle to the axis of the snap ring 30. The break 33 makes the two ends of the snap ring 30 form a wedge-shaped structure, so that it is convenient for the snap ring 30 to be assembled with the fixing member 10 and the screwing member 20; when the snap ring 30 is squeezed by the screwing member 20 and the fixing member 10, the wedge-shaped structures at both ends can be joined to make the snap ring 30 closed, and the arc structures of the anti-loosening grooves 32 are correspondingly continuous, making the assembly of the connector simple and tight, and the anti-loosening effect effective and reliable.

[0058] In this embodiment, as Figures 1 to 8 shown, the screwing member 20 is formed into an annular structure, and the fixing member 10 protrudes towards the screwing member 20 to extend into the annular structure of the screwing member 20, thereby forming the connection between the plug and the socket of the connector.

[0059] It should be noted that in this embodiment, the wires, the housing of the connector, and the components for signal transmission, etc. are not shown, but this embodiment includes the components capable of realizing the transmission function of the connector to ensure the normal application of the connector.

[0060] The connector with anti-loosening function according to the present invention has a simple structure, few components, low manufacturing cost, and is convenient for connection and assembly. The screwing connection process of the connector is labor-saving and smooth. The anti-loosening function is achieved through the cooperative connection between the fixing member, the screwing member, and the snap ring. The cooperative contact area between the components is relatively large, the anti-loosening effect is good, the reliability is high, and the anti-loosening structural form is not easy to break, thus ensuring the service life of the connector.

[0061] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes, or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A connector with a function of preventing loosening, comprising a plug and a socket of the connector, characterized in that, The connector with a loosening prevention function further includes: A fixing member, which is formed as one of the plug or the socket, and an outwardly protruding anti-loosening arm is formed on the side wall of the fixing member; A screwing member, which is formed as the other of the plug or the socket, and the screwing member can rotate about the axis of the fixing member to form a rotation direction for connecting the fixing member and the screwing member; A snap ring, which is arranged between the screwing member and the fixing member; the snap ring is formed with an anti-loosening groove, and the anti-loosening groove abuts against the anti-loosening arm to prevent the screwing member from rotating away from the rotation direction; The screwing member is formed with a clamping groove recessed towards the snap ring, and the snap ring is formed with a clamping key protruding towards the screwing member, and the clamping key is connected to the clamping groove to fix the position of the snap ring on the screwing member; The inner wall of the screwing member is recessed to form an annular clamping groove, the snap ring is arranged in the clamping groove, and the clamping groove is formed at the end of the screwing member close to the snap ring and communicates with the clamping groove; The clamping key protrudes outwards from the side wall of the snap ring to abut against the clamping groove, so that the snap ring rotates synchronously with the screwing member.

2. The connector with anti-loosening function according to claim 1, characterized in that, An annular groove recessed towards the inside is formed on the side wall of the fixing member, the snap ring can be embedded in the annular groove, the anti-loosening arm is formed in the annular groove, and the anti-loosening arm extends towards the rotation direction to form a cantilever structure; the cantilever structure forms an angle with the fixing member.

3. The connector with anti-loosening function according to claim 1, characterized in that, The anti-loosening arm has elasticity, so that when the snap ring rotates relative to the fixing member, the anti-loosening arm swings with the change of the shape of the anti-loosening groove, and the anti-loosening arm contacts the anti-loosening groove at any instantaneous moment during the swing.

4. The connector with anti-loosening function according to claim 1, wherein A plurality of the anti-loosening arms are provided, and the plurality of anti-loosening arms are evenly distributed along the circumference of the fixing member.

5. The connector with anti-loosening function according to claim 1, characterized in that, The free end of the anti-loosening arm is formed with an anti-loosening part that is shaped to fit the anti-loosening groove; the anti-loosening arm is formed as a bent structure, and the bent anti-loosening arm makes the anti-loosening part approach the fixing member.

6. The connector with a loosening prevention function according to claim 5, characterized in that, The anti-loosening groove is formed on the inner wall of the snap ring, and the anti-loosening groove is formed as a plurality of recessed arc-shaped structures; the anti-loosening part is formed as an arc-shaped protruding structure.

7. The connector with a function of preventing loosening according to claim 6, characterized in that, The plurality of recessed arc-shaped structures are connected to each other to form a plurality of protruding pointed parts; the arc-shaped protruding structure is arranged between two adjacent pointed parts.

8. The connector with anti-loosening function according to claim 1, characterized in that, The snap ring is formed of an elastic material; a break is formed on the side wall of the snap ring, and the extending direction of the break is arranged at an angle with the axis of the snap ring, and the break makes the two ends of the snap ring form a wedge-shaped structure; when the snap ring is squeezed by the screwing member and the fixing member, the two ends of the snap ring can be closed.

9. The connector with anti-loosening function according to claim 1, wherein The screwing member is formed as an annular structure, and the fixing member protrudes towards the screwing member to extend into the annular structure of the screwing member.

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