Anti-loose connector

Abstract

The application discloses an anti-loosening connector, comprising a plug and a socket, the plug comprising a plug main body, a male connector and a locking assembly, the plug main body comprising a main shell, one end of the main shell being threadedly connected with the male connector, the locking assembly comprising a connecting outer ring, a button and a first elastic member; the socket comprising a shell and a female connector, one end of the shell being used for sleeving the connecting outer ring, an inner side wall of the shell being formed with a stop block matched with an axial limiting part and a clamping groove matched with a circumferential limiting part, and the female connector being fixed in the shell. In the technical scheme, the axial limiting part of the connecting outer ring is abutted with the stop block of the shell, a mechanical stop is formed, the shell is limited to be separated from the connecting outer ring along the axial direction, the connector is ensured not to be loosened when subjected to an axial tension, the circumferential limiting part of the button is clamped into the clamping groove of the shell, the shell is prevented from rotating around the shaft, thread loosening caused by rotation is avoided, and through the double limiting in the axial and circumferential directions, the stability of the connector in a complex environment is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of connectors, and more particularly to an anti-loosening connector. Background Technology

[0002] Connectors, as core components for achieving electrical connections in electronic devices, play a crucial role in the operation of these devices, and their performance directly affects the overall reliability and stability of the equipment. With continuous technological advancements, electronic devices are developing towards miniaturization and higher performance, especially in fields such as automotive electronics, aerospace, and industrial control, where the requirements for equipment reliability are extremely stringent. This presents connectors with even greater challenges, and their performance has a significant impact on the normal operation of equipment in these critical fields.

[0003] To address the issue of connector detachment, the industry currently offers several anti-loosening design solutions. One common approach is a threaded connection with a spring washer; this structure is relatively simple and relies on the elasticity of the spring washer to prevent loosening. Another mainstream solution is a snap-fit ​​connection structure, typically using a three-point bayonet connector. After the plug and socket are screwed into place at three points, an anti-rotation element on the plug locks it in place within the socket's recess.

[0004] However, existing anti-loosening designs all have certain drawbacks. For threaded connections with spring washers, the spring washers are prone to stress relaxation or plastic deformation under long-term vibration or large impacts, resulting in limited and unreliable anti-loosening effects. As for snap-fit ​​connections, loosening easily occurs when the outer ring rotates, leading to connection breakage. These problems make existing connectors perform poorly in terms of anti-loosening performance, making it difficult to simultaneously achieve reliability, economy, and ease of use, severely restricting the widespread application of connectors in harsh environments. Utility Model Content

[0005] To address the technical problems in the prior art, this application provides an anti-loosening connector.

[0006] The anti-loosening connector provided in this application adopts the following technical solution: An anti-loosening connector, comprising: A plug includes a plug body, a male connector, and a locking assembly. The plug body includes a main housing, one end of which is threadedly connected to the male connector. The locking assembly includes a connecting outer ring, a button, and a first elastic element. The connecting outer ring is slidably sleeved on the other end of the main housing. One end of the connecting outer ring has an axial limiting portion. The button is slidably disposed on the outer wall of the connecting outer ring and can move axially along the connecting outer ring. The button has a circumferential limiting portion. The two ends of the first elastic element are respectively connected to the connecting outer ring and the button. A socket includes a housing and a female connector. One end of the housing is fitted onto the connecting outer ring. The inner sidewall of the housing has a stop that mates with the axial limiting part and a groove that mates with the circumferential limiting part. The female connector is fixed inside the housing. When the housing and the connecting outer ring are connected in place, the female connector mates with the male connector, and the connecting outer ring and the button can rotate relative to the main housing to a preset position, so that the axial limiting part abuts against the stop to restrict the axial movement of the housing relative to the connecting outer ring, and the circumferential limiting part is engaged in the groove to restrict the circumferential rotation of the housing around the axis of the connecting outer ring.

[0007] In some embodiments, the male connector includes an inner thread, a first insulator, and a plurality of male pins. The inner thread is fixed inside the main housing, the first insulator is fixed inside the inner thread, and a plurality of receiving holes are formed inside the first insulator. Each of the male pins is fixed inside a corresponding receiving hole. The female connector includes a second insulator and a plurality of female pins. The second insulator is fixed inside the outer shell. A plurality of embedding portions are formed on the second insulator. The embedding portions are used to be embedded in the receiving holes. A central hole is opened in the center of the embedding portion. The female pins are fixed in the central hole. When the embedding portion is inserted into the corresponding receiving hole, the male pin is inserted into the corresponding female pin.

[0008] In some embodiments, a blocking ring and a limiting groove are formed on the outer sidewall of the internal tooth, and a protruding ring is formed on the inner sidewall of the connecting outer ring. The protruding ring is located between the blocking ring and the main housing to restrict the axial movement of the protruding ring. A protrusion is formed on the protruding ring, and the protrusion is located in the limiting groove to limit the rotation angle range of the connecting outer ring.

[0009] In some embodiments, a guide rib is formed on the outer sidewall of the inner tooth, and a guide groove is formed on the inner sidewall of the outer shell to cooperate with the guide rib. The guide rib is slidably disposed in the guide groove to restrict the rotation of the inner tooth relative to the outer shell.

[0010] In some embodiments, a first sealing ring is embedded between the inner tooth and the outer shell, and a second sealing ring is embedded between the inner tooth and the main shell.

[0011] In some embodiments, a sliding base is fixed on the outer wall of the connecting outer ring, and the button is slidably disposed on the sliding base; The first elastic element includes a spring and a spring. The spring is engaged in the fixing groove of the sliding base and is used to limit the sliding direction of the button. One end of the spring abuts against the connecting outer ring, and the other end of the spring abuts against the inner sidewall of the button.

[0012] In some embodiments, the plug body further includes a nut, a tail cylinder, a limiting cylinder, and a second elastic element. The other end of the main housing is threadedly connected to the nut. The nut has a plurality of blocking portions formed inside it. The opposing side walls of the blocking portions are a vertical side wall and an inclined side wall, respectively. The tail cylinder is slidably disposed within the main housing and can move directionally along the axial direction of the main housing. One end of the tail cylinder has a plurality of comb teeth. When the nut rotates relative to the main housing in the loosening direction, the comb teeth of the tail cylinder will contact the vertical side wall of the blocking portion inside the nut. The limiting cylinder is slidably disposed within the main housing and can move directionally along the axial direction of the main housing. The main housing moves axially in a directional manner. An anti-rotation block is formed on the outer wall of the limiting cylinder, which cooperates with the anti-rotation groove opened on the inner wall of the main housing. The anti-rotation block is slidably disposed in the anti-rotation groove. A plurality of first anti-rotation tooth grooves are formed at one end of the limiting cylinder, and a plurality of second anti-rotation tooth grooves are formed at one end of the internal tooth. The second anti-rotation tooth grooves are engaged with the first anti-rotation tooth grooves. The second elastic member is built into a step inside the main housing. The second elastic member abuts against the other end of the limiting cylinder to provide elastic restoring force to the limiting cylinder, so that the first anti-rotation tooth grooves and the second anti-rotation tooth grooves remain in contact.

[0013] In some embodiments, a third sealing ring is embedded between the tail tube and the main housing.

[0014] In some embodiments, the nut has a through hole for the wire harness to pass through, and a fourth sealing ring is embedded between the wire harness and the inner wall of the through hole.

[0015] In some embodiments, an orientation groove is formed on the inner sidewall of the main housing, and an orientation block is formed on the outer sidewall of the tail cylinder to cooperate with the orientation groove. The orientation block is slidably disposed in the orientation groove to restrict the tail cylinder from rotating relative to the main housing.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. The axial limiting part of the connecting outer ring abuts against the stop of the housing to form a mechanical stop, restricting the housing from detaching from the connecting outer ring axially, ensuring that the connector will not loosen when subjected to axial tension; the circumferential limiting part of the button is inserted into the slot of the housing to prevent the housing from rotating around the axis, avoiding loosening of the threads due to rotation. Through the dual limiting of axial and circumferential directions, a composite locking structure that prevents detachment and rotation is formed, which significantly improves the stability of the connector in complex environments. 2. The second elastic element provides elastic restoring force to the limiting cylinder, so that the first anti-rotation tooth groove and the second anti-rotation tooth groove remain in contact, thereby realizing the anti-rotation limiting of the limiting cylinder and the internal tooth and improving the anti-loosening effect between the internal tooth and the main housing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an anti-loosening connector provided in one embodiment of this application; Figure 2 yes Figure 1 Side view of the anti-loosening connector; Figure 3 yes Figure 2 Sectional view of section AA; Figure 4 yes Figure 3 A magnified view of a portion of region B in the middle; Figure 5 yes Figure 1 A three-dimensional structural diagram of the plug in the image; Figure 6 yes Figure 1 A three-dimensional structural diagram of the main shell in the middle; Figure 7 yes Figure 5 A 3D structural diagram of the plug after omitting the button; Figure 8 yes Figure 7 A three-dimensional structural diagram of the connecting outer ring; Figure 9 yes Figure 7 A three-dimensional structural diagram of the plug after omitting the outer ring connection; Figure 10 yes Figure 3 A three-dimensional structural diagram of the internal teeth and tail tube; Figure 11 yes Figure 1 A three-dimensional structural diagram of the socket in the diagram; Explanation of reference numerals in the attached drawings: 1. Plug; 11. Plug body; 111. Main housing; 1111. Third sealing ring; 1112. Orientation groove; 1113. Anti-rotation groove; 112. Nut; 1121. Blocking part; 11211. Vertical side wall; 11212. Inclined side wall; 1122. Fourth sealing ring; 113. Tail tube; 1131. Orientation block; 1132. Comb teeth; 114. Limiting tube; 1141. Anti-rotation block; 1142. First anti-rotation tooth groove; 115. Second elastic element; 12. Male connector; 121. Internal thread; 1211. Second anti-rotation tooth groove; 1212. Blocking ring; 1213. Limiting groove; 1214. 1. Guide rib; 1215. First sealing ring; 1216. Second sealing ring; 122. First insulator; 1221. Receiving hole; 123. Male pin; 13. Locking assembly; 131. Connecting outer ring; 1311. Axial limiting part; 1312. Sliding base; 1313. Protruding ring; 1314. Protrusion; 132. Button; 1321. Circumferential limiting part; 133. First elastic element; 1331. Spring piece; 1332. Spring; 2. Socket; 21. Housing; 211. Stop block; 212. Slot; 213. Guide groove; 22. Female connector; 221. Second insulator; 2211. Embedded part; 222. Female pin. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0019] This application mainly adopts a double locking connection scheme of plug 1 and socket 2, which achieves the effect of improving the safety and reliability of connector connection and solving the problem of easy loosening. The following is a further detailed description of this application.

[0020] Please refer to Figures 1-11 The anti-loosening connector provided in this application includes a plug 1 and a socket 2. When the plug 1 and socket 2 are connected, the specific structure of the two components cooperates to achieve dual locking in both the axial and circumferential directions, thereby preventing the connector from loosening and making the connection safer and more reliable. This is because the axial and circumferential limiting restricts the relative movement of the plug 1 and socket 2 from different directions, thus preventing the connection from breaking.

[0021] Please refer to Figures 1-3The plug body 11 includes a main housing 111. The main housing 111 serves to support and connect the various components, and is typically cylindrical in shape. Its material can be high-strength plastic or metal to ensure sufficient strength and durability. One end of the main housing 111 is threadedly connected to the male connector 12.

[0022] Please refer to Figures 1-5 The male connector 12 includes an internal thread 121, a first insulator 122, and several male pins 123. The internal thread 121 is generally made of metal and has good rigidity and wear resistance. It is fixed to the main housing 111 by interference fit or welding. Guide ribs 1214 are also formed on the outer side wall of the internal thread 121.

[0023] The first insulator 122, made of a plastic material with good insulating properties, is fixed within the inner thread 121 to isolate the male pin 123 and prevent leakage. Several receiving holes 1221 are formed within the first insulator 122, arranged regularly to fix the male pin 123. The male pin 123 is made of a copper alloy with good conductivity and is fixed into its corresponding receiving hole 1221 by press-fitting or welding. The male pin 123 can also be made of other highly conductive materials such as silver alloy to further improve conductivity.

[0024] Please refer to Figures 1-9 The locking assembly 13 includes a connecting outer ring 131, a button 132, and a first elastic element 133. The connecting outer ring 131 is typically made of metal or hard plastic and is slidably fitted onto the other end of the main housing 111. One end of the connecting outer ring 131 has an axial limiting portion 1311, of which there are three axial limiting portions 1311 evenly distributed circumferentially. These portions can be protruding annular structures used to engage with the stop block 211 of the socket 2.

[0025] Preferably, please refer to Figure 8 and Figure 9 A blocking ring 1212 and a limiting groove 1213 are formed on the outer side wall of the internal tooth 121. A protruding ring 1313 is formed on the inner side wall of the connecting outer ring 131. The protruding ring 1313 is located between the blocking ring 1212 and the main housing 111 to restrict the axial movement of the protruding ring 1313. A protrusion 1314 is formed on the protruding ring 1313. The protrusion 1314 is located in the limiting groove 1213 to limit the rotation angle range of the connecting outer ring 131.

[0026] Button 132 can also be made of metal or hard plastic, and is slidably disposed outside the connecting outer ring 131, and can move axially along the connecting outer ring 131. A sliding base 1312 is fixed on the outer side wall of the connecting outer ring 131, and button 132 is slidably disposed on the sliding base 1312. A circumferential limiting part 1321 is formed on button 132, and the circumferential limiting part 1321 can be a protruding block structure.

[0027] Please refer to Figures 1-7 The first elastic element 133 includes a spring sheet 1331 and a spring 1332. The spring sheet 1331 is engaged in the fixing groove of the sliding base 1312 and is used to limit the sliding direction of the button 132. One end of the spring 1332 abuts against the connecting outer ring 131, and the other end abuts against the inner sidewall of the button 132. The first elastic element 133 provides elastic force and resets, allowing the circumferential limiting part 1321 to be tightly engaged in the slot 212, thus enhancing the locking effect.

[0028] Please refer to Figure 1 and Figure 11 The socket 2 includes a housing 21 and a female connector 22. The housing 21 is generally made of metal or plastic, and one end is used to fit onto the connecting outer ring 131. The inner sidewall of the housing 21 has a stop 211 that mates with the axial limiting part 1311 and a groove 212 that mates with the circumferential limiting part 1321. The size and shape of the stop 211 and the groove 212 match the axial limiting part 1311 and the circumferential limiting part 1321 to ensure good fitting accuracy. There are three stops 211, which are evenly distributed circumferentially and are built into the housing 21, which greatly reduces the height of the socket 2 protruding from the mounting panel, reduces the installation space at the customer's end, and also reduces the probability of the socket 2 being damaged by foreign objects during use. The inner sidewall of the housing 21 also has a guide groove 213 that mates with the guide rib 1214. The guide rib 1214 is slidably disposed in the guide groove 213 to limit the rotation of the internal thread 121 relative to the housing 21.

[0029] The female connector 22 is fixed inside the outer casing 21. The female connector 22 includes a second insulator 221 and a plurality of female pins 222. The second insulator 221 is also made of a plastic material with good insulating properties and is fixed inside the outer casing 21. A plurality of insert portions 2211 are formed on the second insulator 221. The insert portions 2211 are used to be inserted into the receiving holes 1221. A central hole is opened in the center of the insert portion 2211, and the female pins 222 are fixed in the central hole.

[0030] Preferably, a first sealing ring 1215 is embedded between the inner thread 121 and the outer shell 21 to prevent external dust, moisture, etc. from entering the gap between the inner thread 121 and the outer shell 21, thus protecting the internal electrical connection. A second sealing ring 1216 is embedded between the inner thread 121 and the main shell 111 to ensure the sealing between the inner thread 121 and the main shell 111, thus avoiding problems such as leakage and short circuit.

[0031] The connector connection process and locking principle are as follows: When connecting the plug 1 and the socket 2, the outer shell 21 is first fitted onto the connecting outer ring 131, and the guide rib 1214 slides into the guide groove 213 to achieve initial positioning of the inner thread 121 and the outer shell 21. As the outer shell 21 and the connecting outer ring 131 are further connected, the insert 2211 of the female connector 22 is inserted into the receiving hole 1221 of the male connector 12, and the male pin 123 is inserted into the female pin 222 to achieve electrical connection. When the outer casing 21 is connected to the connecting outer ring 131, the connecting outer ring 131 can rotate relative to the main casing 111 to a preset position. At this time, the axial limiting part 1311 of the connecting outer ring 131 abuts against the stop 211 of the outer casing 21, restricting the axial movement of the outer casing 21 relative to the connecting outer ring 131; the button 132 rotates with the connecting outer ring 131, and when the axial limiting part 1311 of the connecting outer ring 131 fully abuts against the stop 211 of the outer casing 21, the circumferential limiting part 1321 of the button 132 is exactly aligned with the slot 212. Under the push of the spring 1332, the circumferential limiting part 1321 is engaged in the slot 212 of the outer casing 21. 12. This restricts the outer casing 21 from rotating circumferentially around the axis of the connecting outer ring 131, thereby achieving dual locking in both the axial and circumferential directions. During rotation, the protruding ring 1313 on the inner sidewall of the connecting outer ring 131 is located between the blocking ring 1212 of the inner thread 121 and the main casing 111, restricting the axial movement of the protruding ring 1313. The protrusion 1314 on the protruding ring 1313 is located in the limiting groove 1213, restricting the rotation angle range of the connecting outer ring 131 and avoiding excessive rotation that could lead to positioning difficulties.

[0032] When it is necessary to disconnect the connection between plug 1 and socket 2, the double locking structure must be released by following specific steps.

[0033] First, push the button 132 towards the plug body 11. Due to the presence of the first elastic element 133 (spring 1331 and spring 1332), the spring 1332 is compressed when the button 132 is pushed. At this time, the button 132 will overcome the elastic force of the first elastic element 133 and move along the axial direction of the connecting outer ring 131. As the button 132 moves, the circumferential limiting part 1321 on it will disengage from the slot 212 on the inner side wall of the socket 2 housing 21, thereby releasing the circumferential lock and allowing the housing 21 to rotate circumferentially around the axis of the connecting outer ring 131.

[0034] After the circumferential limit is released, the connecting outer ring 131 is rotated in the opposite direction relative to the main housing 111. During the rotation, the axial limiting part 1311 on the connecting outer ring 131 gradually separates from the stop 211 on the inner side wall of the socket 2 housing 21. Since there are three axial limiting parts 1311 and three stops 211 evenly distributed circumferentially, after rotating a certain angle, the axial limiting part 1311 and the stop 211 are completely misaligned, at which point the axial lock is released, and the housing 21 can move axially relative to the connecting outer ring 131.

[0035] After both the axial and circumferential locking are released, the outer shell 21 of the socket 2 can be pulled off the connecting outer ring 131, thereby separating the plug 1 from the socket 2. During the pulling process, the male pin 123 of the male connector 12 will be pulled out from the female pin 222 of the female connector 22, and at the same time, the insert 2211 of the female connector 22 will also disengage from the receiving hole 1221 of the male connector 12.

[0036] The technical advantages of this embodiment include: It solves the problem of easy loosening of existing connectors through a unique double-locking structure. The axial and circumferential limiting mechanisms between the plug 1 and the socket 2 cooperate to form a secure connection. Furthermore, the reliability of the locking is further improved by the action of the first elastic element 133. This double-locking structure is not only relatively simple in structure and easy to install and disassemble, but it can also effectively cope with harsh environments such as vibration and impact, improving the stability and safety of the connector.

[0037] This application also further improves the structure of plug 1 to enhance the anti-loosening effect between the various components of plug 1 and improve the stability of plug 1. Specifically, as follows: Please refer to Figures 3-10 The plug body 11 also includes a nut 112, a tail cylinder 113, a limiting cylinder 114, and a second elastic element 115. The other end of the main housing 111 is threadedly connected to the nut 112. A directional groove 1112 is provided on the inner side wall of the main housing 111.

[0038] The nut 112 has a plurality of blocking portions 1121 formed inside, and the opposite side walls of the blocking portions 1121 are a vertical side wall 11211 and an inclined side wall 11212, respectively.

[0039] The tail tube 113 is slidably disposed within the main housing 111 and can move directionally along the axial direction of the main housing 111. An directional block 1131 is formed on its outer sidewall, which engages with the directional groove 1112 on the inner sidewall of the main housing 111. The directional block 1131 is slidably disposed within the directional groove 1112. This structure restricts the rotation of the tail tube 113 relative to the main housing 111. A plurality of comb teeth 1132 are formed at one end of the tail tube 113, and these comb teeth 1132 play an important role in preventing loosening.

[0040] When the nut 112 rotates relative to the main housing 111 in the loosening direction, the comb teeth 1132 of the tail cylinder 113 will contact the vertical sidewall 11211 of the inner blocking part 1121 of the nut 112. Due to the blocking effect of the vertical sidewall 11211, a larger force must be applied to continue rotating the nut 112 in the loosening direction, causing the comb teeth 1132 to undergo a large elastic deformation, thereby overcoming the vertical sidewall 11211. This design increases the resistance to loosening the nut 112, effectively preventing the nut 112 from loosening on its own due to vibration or other factors during normal use. When the nut 112 rotates relative to the main housing 111 in the tightening direction, the comb teeth 1132 contact the inclined sidewall 11212 of the blocking part 1121. The design of the inclined sidewall 11212 allows the nut 112 to move smoothly during tightening, reducing operational resistance and facilitating installation by the user.

[0041] The limiting cylinder 114 is slidably disposed within the main housing 111 and can move directionally along the axial direction of the main housing 111. An anti-rotation block 1141 is formed on its outer sidewall, which engages with an anti-rotation groove 1113 formed on the inner sidewall of the main housing 111. The anti-rotation block 1141 is slidably disposed within the anti-rotation groove 1113. This structure restricts the rotation of the limiting cylinder 114 relative to the main housing 111. One end of the limiting cylinder 114 forms several first anti-rotation grooves 1142, while one end of the internal thread 121 forms several second anti-rotation grooves 1211, which engage with the first anti-rotation grooves 1142, thus achieving anti-rotation and limiting of the limiting cylinder 114 and the internal thread 121.

[0042] The second elastic element 115 is built into a step inside the main housing 111. The second elastic element 115 abuts against the other end of the limiting cylinder 114 to provide elastic restoring force to the limiting cylinder 114, so that the first anti-rotation groove 1142 and the second anti-rotation groove 1211 remain in contact.

[0043] In this embodiment, the tail tube 113 and the main housing 111 are limited and prevented from rotating by the directional block 1131 and the directional groove 1112, and the limiting tube 114 and the main housing 111 are limited and prevented from rotating by the anti-rotation block 1141 and the anti-rotation groove 1113. These four components are interconnected and jointly realize the anti-rotation function between the various components of the plug 1. The directional block 1131 is slidably disposed in the directional groove 1112. This structure restricts the rotation of the tail tube 113 relative to the main housing 111. The anti-rotation block 1141 is slidably disposed in the anti-rotation groove 1113. This structure restricts the rotation of the limiting tube 114 relative to the main housing 111.

[0044] Preferably, a third sealing ring 1111 is embedded between the tail tube 113 and the main housing 111 to prevent dust and moisture from entering the area between the tail tube 113 and the main housing 111, thus protecting the internal wiring harness and structure.

[0045] Preferably, the nut 112 has a through hole for the wire harness to pass through. To prevent external dust, moisture, etc. from entering the plug 1 through the gap between the wire harness and the inner wall of the through hole and affecting the normal operation of the wire harness, a fourth sealing ring 1122 is embedded between the nut 112 and the through hole. This sealing design effectively protects the wire harness and improves the reliability of the plug 1 in different environments.

[0046] The assembly steps for plug 1 are as follows: First, place the second elastic element 115 on the step inside the main housing 111. Then, insert the limiting cylinder 114 into the main housing 111, abutting against the second elastic element 115. Finally, thread one end of the main housing 111 onto the internal thread 121 of the male connector 12 and tighten it using a suitable tool. After tightening the internal thread 121, the first anti-rotation groove 1142 at one end of the limiting cylinder 114 will engage with the second anti-rotation groove 1211 at one end of the internal thread 121, thus preventing the internal thread 121 from easily loosening.

[0047] Next, insert the tail tube 113 into the main housing 111, aligning the directional block 1131 on the outer wall of the tail tube 113 with the directional groove 1112 on the inner wall of the main housing 111. Then, push the tail tube 113 into the main housing 111 along the direction of the directional groove 1112, and rotate the nut 112 in the tightening direction. At this time, the comb teeth 1132 of the tail tube 113 contact the inclined side wall 11212 of the inner blocking part 1121 of the nut 112. Due to the design of the inclined side wall 11212, the nut 112 can move smoothly during the tightening process until the installation is completed.

[0048] The beneficial effects of this embodiment include: when the nut 112 rotates relative to the main housing 111 in the loosening direction, the comb teeth 1132 of the tail cylinder 113 will contact the vertical sidewall 11211 of the inner blocking part 1121 of the nut 112. To continue loosening the nut 112, a large force must be applied to cause the comb teeth 1132 to undergo a large elastic deformation to pass over the vertical sidewall 11211, increasing the resistance to loosening the nut 112 and effectively preventing the nut 112 from loosening on its own due to vibration or other factors during normal use. At the same time, the second elastic element 115 provides elastic restoring force to the limiting cylinder 114, keeping the first anti-rotation groove 1142 in contact with the second anti-rotation groove 1211, realizing the anti-rotation limiting of the limiting cylinder 114 and the inner teeth 121, and improving the anti-loosening effect between the inner teeth 121 and the main housing 111.

[0049] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of this application.

Claims

1. An anti-loosening connector, characterized in that, include: A plug (1) includes a plug body (11), a male connector (12), and a locking assembly (13). The plug body (11) includes a main housing (111), one end of which is threadedly connected to the male connector (12). The locking assembly (13) includes a connecting outer ring (131), a button (132), and a first elastic element (133). The connecting outer ring (131) is slidably sleeved on the other end of the main housing (111). One end of the connecting outer ring (131) has an axial limiting portion (1311). The button (132) is slidably disposed on the outer wall of the connecting outer ring (131) and can move axially along the connecting outer ring (131). A circumferential limiting portion (1321) is formed on the button (132). The two ends of the first elastic element (133) are respectively connected to the connecting outer ring (131) and the button (132). The socket (2) includes a housing (21) and a female connector (22). One end of the housing (21) is fitted onto the connecting outer ring (131). The inner sidewall of the housing (21) has a stop (211) that cooperates with the axial limiting part (1311) and a groove (212) that cooperates with the circumferential limiting part (1321). The female connector (22) is fixed inside the housing (21). When the housing (21) is connected to the connecting outer ring (131), the female connector (22)... 2) The male connector (12) is connected to the outer ring (131) and the button (132) can rotate relative to the main housing (111) to a preset position, so that the axial limiting part (1311) abuts against the stop (211) to restrict the outer shell (21) from moving axially relative to the outer ring (131), and the circumferential limiting part (1321) is engaged in the slot (212) to restrict the outer shell (21) from rotating circumferentially around the axis of the outer ring (131).

2. The anti-loosening connector according to claim 1, characterized in that, The male connector (12) includes an inner thread (121), a first insulator (122) and a plurality of male pins (123). The inner thread (121) is fixed inside the main housing (111), the first insulator (122) is fixed inside the inner thread (121), and a plurality of receiving holes (1221) are formed inside the first insulator (122). Each of the male pins (123) is fixed inside the corresponding receiving hole (1221). The female connector (22) includes a second insulator (221) and a plurality of female pins (222). The second insulator (221) is fixed inside the outer shell (21). A plurality of insert portions (2211) are formed on the second insulator (221). The insert portions (2211) are used to be inserted into the receiving holes (1221). A central hole is opened in the center of the insert portion (2211). The female pins (222) are fixed in the central hole. When the insert portion (2211) is inserted into the corresponding receiving hole (1221), the male pin (123) is inserted into the corresponding female pin (222).

3. The anti-loosening connector according to claim 2, characterized in that, A blocking ring (1212) and a limiting groove (1213) are formed on the outer sidewall of the inner tooth (121), and a protruding ring (1313) is formed on the inner sidewall of the connecting outer ring (131). The protruding ring (1313) is located between the blocking ring (1212) and the main housing (111) to restrict the axial movement of the protruding ring (1313). A protrusion (1314) is formed on the protruding ring (1313), and the protrusion (1314) is located in the limiting groove (1213) to limit the rotation angle range of the connecting outer ring (131).

4. The anti-loosening connector according to claim 2, characterized in that, A guide rib (1214) is formed on the outer side wall of the inner tooth (121), and a guide groove (213) is formed on the inner side wall of the outer shell (21) to cooperate with the guide rib (1214). The guide rib (1214) is slidably disposed in the guide groove (213) to restrict the rotation of the inner tooth (121) relative to the outer shell (21).

5. The anti-loosening connector according to claim 2, characterized in that, A first sealing ring (1215) is embedded between the inner tooth (121) and the outer shell (21), and a second sealing ring (1216) is embedded between the inner tooth (121) and the main shell (111).

6. The anti-loosening connector according to claim 1, characterized in that, A sliding base (1312) is fixed on the outer wall of the connecting outer ring (131), and the button (132) is slidably disposed on the sliding base (1312). The first elastic element (133) includes a spring sheet (1331) and a spring (1332). The spring sheet (1331) is engaged in the fixing groove of the sliding base (1312) and is used to limit the sliding direction of the button (132). One end of the spring (1332) abuts against the connecting outer ring (131), and the other end of the spring (1332) abuts against the inner sidewall of the button (132).

7. The anti-loosening connector according to claim 2, characterized in that; The plug body (11) further includes a nut (112), a tail cylinder (113), a limiting cylinder (114), and a second elastic element (115). The other end of the main housing (111) is threadedly connected to the nut (112). A plurality of blocking portions (1121) are formed inside the nut (112). The opposing side walls of the blocking portions (1121) are a vertical side wall (11211) and an inclined side wall (11212), respectively. The tail cylinder (113) is slidably disposed inside the main housing (111) and can move along the main housing. The body (111) moves directionally along its axial direction. One end of the tail cylinder (113) has a plurality of comb teeth (1132). When the nut (112) rotates relative to the main housing (111) in the loosening direction, the comb teeth (1132) of the tail cylinder (113) will contact the vertical sidewall (11211) of the blocking part (1121) inside the nut (112). The limiting cylinder (114) is slidably disposed inside the main housing (111) and can move along the main housing. The housing (111) moves axially in a directional manner. An anti-rotation block (1141) is formed on the outer wall of the limiting cylinder (114) to cooperate with an anti-rotation groove (1113) opened on the inner wall of the main housing (111). The anti-rotation block (1141) is slidably disposed within the anti-rotation groove (1113). A plurality of first anti-rotation tooth grooves (1142) are formed at one end of the limiting cylinder (114), and a plurality of second anti-rotation tooth grooves (1142) are formed at one end of the internal tooth (121). 211), the second anti-rotation groove (1211) engages with the first anti-rotation groove (1142), the second elastic member (115) is built into a step inside the main housing (111), the second elastic member (115) abuts against the other end of the limiting cylinder (114) to provide elastic restoring force to the limiting cylinder (114), so that the first anti-rotation groove (1142) and the second anti-rotation groove (1211) remain in contact.

8. The anti-loosening connector according to claim 7, characterized in that, A third sealing ring (1111) is embedded between the tail tube (113) and the main housing (111).

9. The anti-loosening connector according to claim 7, characterized in that, The nut (112) has a through hole for the wire harness to pass through, and a fourth sealing ring (1122) is embedded between the wire harness and the inner wall of the through hole.

10. The anti-loosening connector according to claim 7, characterized in that, The inner wall of the main housing (111) is provided with a directional groove (1112), and the outer wall of the tail cylinder (113) is provided with a directional block (1131) that cooperates with the directional groove (1112). The directional block (1131) is slidably disposed in the directional groove (1112) to restrict the tail cylinder (113) from rotating relative to the main housing (111).

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