A connector locking and anti-loosening device

Abstract

The present invention discloses a connector locking and anti-loosening device, comprising a connecting male end, an inner core assembly, a connecting nut, a compression spring, and a locking device. The connecting male end has an external thread, the inner core assembly includes a first clamping boss and a clamping boss arranged at intervals, the connecting nut is provided with an internal thread, and the connecting nut is also provided with a boss avoidance groove. One end of the inner core assembly extends into the connecting male end and the first clamping boss abuts the end of the connecting male end. The external thread and the internal thread cooperate to achieve the connection between the connecting nut and the external thread of the connecting male end. The locking device is hollow, and the inner wall of the locking device is provided with a boss locking groove. The clamping boss is clamped into the boss locking groove. The compression spring is provided between the connecting nut and the locking device. The invention aims to solve the technical problems of the connector in the background art, such as the serious loosening between the connecting male end and the connecting female end, even falling off, and poor stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of connectors, and in particular relates to a connector locking and anti-loosening device. Background Art

[0002] Connectors are used to connect cables (wires) between devices. To ensure stability during signal transmission, most existing M12 connectors use an anti-loosening design, but the structure basically uses axial thrust to tighten to ensure anti-loosening. For example, Chinese Patent Publication No. 106129717A discloses an M12 connector anti-loosening structure, which includes a connecting nut and a housing provided with a straight tube and a threaded tube. The straight tube is connected to the threaded tube, and the connecting front end of the housing is a threaded end. One end of the inner side wall of the connecting nut is provided with a connecting thread, and the connecting nut is sleeved on the threaded tube through the connecting thread. The other end of the inner side wall of the connecting nut is provided with a mounting groove, and the mounting groove is equipped with an elastic component.

[0003] The existing technology has the disadvantage that the M12 connector's anti-loosening structure can cause the female and male connectors to loosen significantly or even fall off due to insufficient locking force or prolonged vibration. This cannot fully guarantee the stability and reliability of signal transmission over the long term.

[0004] Therefore, it is necessary to provide a new connector locking and anti-loosening device to solve the above technical problems. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] Based on this, the present invention proposes a locking and anti-loosening device for a connector, which is intended to solve the technical problem in the background technology that the M12 connector has serious looseness between the connecting male end and the connecting female end, or even falls off, and cannot ensure the stability and reliability during signal transmission.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the present invention proposes a connector locking and anti-loosening device, including a connecting male end, an inner core component, a connecting nut, a compression spring and a locking device, the connecting male end has an external thread, the inner core component includes a first clamping boss and a clamping boss arranged at intervals, the connecting nut is provided with an internal thread, and the connecting nut is also provided with a boss avoidance groove, one end of the inner core component extends into the connecting male end and the first clamping boss abuts the end of the connecting male end, and the connecting nut is connected to the external thread of the connecting male end through the cooperation of the external thread and the internal thread, the locking device is hollow, and the inner wall of the locking device is provided with a boss locking groove, the clamping boss is clamped in the boss locking groove, and the compression spring is arranged between the connecting nut and the locking device.

[0009] Preferably, a screw-in groove is further provided in the locking device, and the screw-in groove extends from one end of the locking device close to the connecting nut into the locking device, and the boss locking groove is provided at the tail of the screw-in groove, and the depth of the boss locking groove is greater than the depth of the screw-in groove.

[0010] Preferably, the screw-in groove is a spiral groove and the rotation direction of the screw-in groove is left-handed, and the rotation directions of the internal thread and the external thread are both right-handed.

[0011] Preferably, the inner core component includes an inner core terminal, which includes a columnar inner core body and the first clamping boss arranged on the outer wall of the inner core body, one end of the inner core body extends into the connecting male end, and the inner core component also includes a metal shell, which includes: a sleeve fixedly sleeved on the other end of the inner core body, and the clamping boss protruding from the outer wall of the sleeve.

[0012] Preferably, the inner core terminal is made of an insulating material, the metal shell is made of a metal material, and the inner core terminal and the metal shell are crimped into a whole.

[0013] Preferably, the number of the snap-fitting bosses is 3, and the 3 snap-fitting bosses are evenly distributed along the circumference of the sleeve; the number of the boss avoidance grooves is 3, and the 3 boss avoidance grooves are evenly distributed along the circumference of the connecting nut; the number of the screw-in grooves is 3, and the 3 screw-in grooves are evenly distributed along the circumference of the locking device, and a boss locking groove is provided at the tail of each screw-in groove.

[0014] Preferably, the locking device is provided with a spring receiving groove formed in a depression at one end close to the connecting nut, and the compression spring is installed in the spring receiving groove.

[0015] Preferably, the compression spring is a corrugated spring.

[0016] Preferably, the outer wall of the connecting male end is provided with a first rotating square head, and the outer wall of the connecting nut is provided with a second rotating square head.

[0017] Preferably, the engaging protrusion is cylindrical, and the cross section of the screw-in groove is rectangular.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the connector locking and anti-loosening device of the present invention has the following beneficial effects:

[0020] The connector locking and anti-loosening device of the present invention adds a reverse thread locking device at the tail end. The locking device cooperates with the connecting nut and realizes the anti-loosening function under the action of the compression spring. The locking device cooperates with the metal shell to realize the anti-rotation function. Through this structure, the stability of the inner core terminal in the connecting nut can be guaranteed and the anti-retraction function can be prevented after locking. The connector locking and anti-loosening device of the present invention has a simple structure, is easy to use and assemble, and is strong and durable, which can effectively ensure the stability during signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present invention in any way. In the accompanying drawings:

[0022] Figure 1 A cross-sectional view of the overall structure of a connector locking and anti-loosening device according to an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of a connector locking and anti-loosening device according to an embodiment of the present invention;

[0024] Figure 3 A three-dimensional view of a connecting nut in a connector locking and anti-loosening device according to an embodiment of the present invention, viewed from one direction;

[0025] Figure 4 A perspective view from another direction of the connecting nut in the connector locking and anti-loosening device according to an embodiment of the present invention;

[0026] Figure 5 A three-dimensional view of a locking device in a connector locking and anti-loosening device according to an embodiment of the present invention, viewed from one direction;

[0027] Figure 6 A perspective view of the locking device in the connector locking and anti-loosening device according to an embodiment of the present invention from another direction;

[0028] Figure 7 This is a structural diagram of a compression spring in a connector locking and anti-loosening device according to an embodiment of the present invention installed in a locking device.

[0029] Description of reference numerals:

[0030] 1. Connecting male end, 2. Inner core terminal, 3. Metal shell, 4. Connecting nut, 5. Compression spring, 6. Locking device, 11. External thread, 12. First rotating square head, 21. Inner core body, 22. First clamping boss, 31. Metal shell, 32. Clamping boss, 41. Internal thread, 42. Boss avoidance groove, 43. Second rotating square head, 44. Second clamping boss, 61. Boss locking groove, 62. Screw-in groove, 63 Spring receiving groove. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium; it can mean internal communication between two elements, or a "transmission connection," i.e., a power connection through various appropriate means such as a belt drive, a gear drive, or a sprocket drive. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] The following is combined with Figure 1-7 The present invention will be further described.

[0034] Please refer to the attached Figure 1-4 , a connector locking and anti-loosening device includes a connecting male end 1, an inner core component, a connecting nut 4, a compression spring 5 and a locking device 6, the connecting male end 1 has an external thread 11, the inner core component includes a first clamping boss 22 and a clamping boss 32 arranged at intervals, an internal thread 41 is provided in the connecting nut 4, and a boss avoidance groove 42 is also provided in the connecting nut 4. One end of the inner core component extends into the connecting male end 1 and the first clamping boss 22 abuts against the end of the connecting male end 1. The external thread 11 and the internal thread 41 cooperate to realize the threaded connection between the connecting nut 4 and the connecting male end 1. The locking device 6 is hollow, and the inner wall of the locking device 6 is provided with a boss locking groove 61. The clamping boss 32 is clamped in the boss locking groove 61, and the compression spring 5 is arranged between the connecting nut 4 and the locking device 6.

[0035] The working principle of the present invention is described in detail below: During assembly, the inner core assembly is first inserted into the connecting nut 4. During the insertion process, the engaging boss 32 is aligned with the boss avoidance groove 42 and inserted. The compression spring 5 is then inserted into the other end of the inner core assembly, and then the locking device 6 is inserted, so that the compression spring 5 is located between the connecting nut 4 and the locking device 6.

[0036] During use, the male connector 1 is inserted into the connecting nut 4. The internal thread 41 of the connecting nut 4 is then screwed into the external thread 11 of the male connector 1. When the male connector 1 and the connecting nut 4 are fully engaged, the second engaging protrusion 44 of the connecting nut 4 is tightly engaged with the first engaging protrusion 22 of the inner core assembly. The locking device 6 is rotated counterclockwise, and the engaging protrusion 32 is engaged in the protrusion locking groove 61.

[0037] In this embodiment, after the snap-fitting boss 32 is snapped into the boss locking groove 61, it can effectively limit the rotation of the inner core component relative to the locking device 6. At this time, the compression spring installed between the connecting nut 4 and the locking device 6 generates a reaction force due to compression, which limits the locking device 6 from approaching the connecting nut 4, so that the boss locking groove 61 in the locking device 6 is snapped on the snap-fitting boss 32 of the inner core component to achieve the effect of loosening.

[0038] The present invention provides a connector locking and anti-loosening device. A locking device 6 cooperates with a connecting nut 4, under the action of a compression spring 5, to achieve an anti-loosening function. The locking device 6 cooperates with a metal housing 3 to achieve an anti-rotation function. The connector locking and anti-loosening device of the present invention has a simple structure, is easy to assemble, and is durable and strong, effectively ensuring stability during signal transmission.

[0039] Please refer to the attached Figure 5-7 According to a specific embodiment of the present invention, the locking device 6 is further provided with a screw-in groove 62. The screw-in groove 62 extends from the end of the locking device 6 near the connecting nut 4 into the locking device 6. The boss locking groove 61 is provided at the end of the screw-in groove 62. The depth of the boss locking groove 61 is greater than the depth of the screw-in groove 62. In this embodiment, the provision of the screw-in groove 62 facilitates the insertion of the engaging boss 32 into the boss locking groove 61, thereby improving assembly convenience. The structure in which the depth of the boss locking groove 61 is greater than the depth of the screw-in groove 62 helps prevent the engaging boss 32 from falling out.

[0040] According to a specific embodiment of the present invention, the screw-in groove 62 is a spiral groove and the direction of rotation of the screw-in groove 62 is left-handed, and the direction of rotation of the external thread 11 is right-handed. In this embodiment, the locking device 6 adopts left-hand locking, and its locking direction is opposite to the locking direction of the connecting nut 4. Therefore, when the connecting nut 4 becomes loose, its displacement direction is the direction closer to the locking device 6; when the locking device 6 becomes loose, its displacement direction is the direction closer to the connecting nut 4; and the compression spring 5 is arranged between the two to provide axial tightening force. Therefore, the use of a structure that combines left-hand and right-hand rotation can further prevent loosening and effectively ensure the connection stability of a connector locking and anti-loosening device of the present invention.

[0041] According to a specific embodiment of the present invention, the inner core component includes an inner core terminal 2, the inner core terminal 2 includes a columnar inner core body 21 and a first clamping boss 22 arranged on the outer wall of the inner core body 21, one end of the inner core body 21 extends into the connecting male end 1, and the inner core component also includes a metal shell 3, the metal shell 3 includes: a sleeve 31 fixedly sleeved on the other end of the inner core body 21, and a clamping boss 32 protruding from the outer wall of the sleeve 31.

[0042] More specifically, the inner core terminal 2 is made of an insulating material, and the metal shell 3 is made of a metal material. The inner core terminal 2 and the metal shell 3 are crimped together to form a single unit. In this embodiment, the inner core assembly comprises the inner core terminal 2 and the metal shell 3, which are formed separately and then crimped together to form a single unit. The inner core terminal 2 is made of an insulating material to ensure its insulation performance. The metal shell 3 is made of a metal material with good wear resistance, which can withstand the wear and tear caused by repeated assembly and disassembly, thereby ensuring the overall performance and service life of the inner core assembly.

[0043] According to a specific embodiment of the present invention, the number of the clamping protrusions 32 is 3, and the 3 clamping protrusions 32 are evenly distributed along the circumference of the sleeve 31; the number of the boss avoidance grooves 42 is 3, and the 3 boss avoidance grooves 42 are evenly distributed along the circumference of the connecting nut 4; the number of the screw-in grooves 62 is 3, and the 3 screw-in grooves 62 are evenly distributed along the circumference of the locking device 6, and a boss locking groove 61 is provided at the tail of each screw-in groove 62. In this embodiment, by providing multiple clamping protrusions 32, it is beneficial to ensure the uniformity and stability of the clamping force. It should be noted that the number of the clamping protrusions 32 in this embodiment is 3, but is not limited to 3. The number of the clamping protrusions 32 can also be 1, 2, or 4 or more. All of these fall within the scope of protection of the present invention.

[0044] According to a specific embodiment of the present invention, the locking device 6 has a recessed spring-receiving groove 63 at one end near the connecting nut 4. The compression spring 5 is mounted within the spring-receiving groove 63. More specifically, the spring-receiving groove 63 is a cylindrical groove. In this embodiment, the provision of the spring-receiving groove 63 facilitates the secure accommodation of the compression spring 5.

[0045] According to a specific embodiment of the present invention, compression spring 5 is a corrugated spring. In this embodiment, corrugated springs offer the following advantages: a wide range of stiffness, strong vibration damping and absorption capabilities, and high deformation energy per unit volume. Furthermore, stiffness can be adjusted by adjusting the number of springs combined. Furthermore, the structure is compact, requiring less installation space under the same mechanical parameters.

[0046] According to a specific embodiment of the present invention, the engaging protrusion 32 is cylindrical, and the cross section of the screw-in groove 62 is rectangular.

[0047] According to a specific embodiment of the present invention, a first rotating square head 12 is provided on the outer wall of the connecting male end 1, and a second rotating square head 43 is provided on the outer wall of the connecting nut 4. Both the first rotating square head 12 and the second rotating square head 43 are used for wrench tightening. After the wrench is inserted, the connecting nut 4 or the connecting male end 1 is rotated in opposite directions to achieve thread locking of both.

[0048] In the above embodiment, the present invention provides a connector locking and anti-loosening device, which provides a structure for fastening the connecting nut 4 to the inner core terminal 2. One or more snap-fitting protrusions 32 on the metal shell 3 can slide along a corresponding number of rectangular thread grooves provided within the locking device 6. A corrugated spring placed between the connecting nut 4 and the locking device 6 provides axial tightening force, and the snap-fitting protrusions 32 finally slide into the arc groove (boss locking groove 61) at the end of the thread groove. The present invention avoids the use of complex connector connection methods, greatly simplifies the assembly steps, and saves assembly time. It also has the advantages of being strong and durable, easy to install, and compact.

[0049] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A connector locking and anti-loosening device, characterized in that: The cam is secured to the cam face and is adapted to engage the locking nut, wherein the cam is secured to the cam face and the locking nut is adapted to engage the locking nut.

2. The connector locking and anti-loosening device according to claim 1, characterized in that: A screw-in groove is also provided in the locking device, and the screw-in groove extends from one end of the locking device close to the connecting nut into the locking device. The boss locking groove is provided at the tail of the screw-in groove, and the depth of the boss locking groove is greater than the depth of the screw-in groove.

3. The connector locking and anti-loosening device according to claim 2, characterized in that: The screw-in groove is a spiral groove and the rotation direction of the screw-in groove is left-handed, and the rotation directions of the internal thread and the external thread are both right-handed.

4. The connector locking and anti-loosening device according to claim 3, characterized in that: The inner core component includes an inner core terminal, which includes a columnar inner core body and the first clamping boss arranged on the outer wall of the inner core body. One end of the inner core body extends into the connecting male end. The inner core component also includes a metal shell, which includes: a sleeve fixedly sleeved on the other end of the inner core body and the clamping boss protruding from the outer wall of the sleeve.

5. The connector locking and anti-loosening device according to claim 4, characterized in that: The inner core terminal is made of insulating material, the metal shell is made of metal material, and the inner core terminal and the metal shell are crimped into a whole.

6. The connector locking and anti-loosening device according to claim 5, characterized in that: The number of the snap-fitting bosses is 3, and the 3 snap-fitting bosses are evenly distributed along the circumference of the sleeve; the number of the boss avoidance grooves is 3, and the 3 boss avoidance grooves are evenly distributed along the circumference of the connecting nut; the number of the screw-in grooves is 3, and the 3 screw-in grooves are evenly distributed along the circumference of the locking device, and a boss locking groove is provided at the tail of each screw-in groove.

7. The connector locking and anti-loosening device according to claim 1, characterized in that: The locking device is provided with a spring receiving groove formed by a depression at one end close to the connecting nut, and the compression spring is installed in the spring receiving groove.

8. The connector locking and anti-loosening device according to claim 1, characterized in that: The compression spring is a corrugated spring.

9. The connector locking and anti-loosening device according to claim 1, characterized in that: A first rotating square head is provided on the outer wall of the connecting male end, and a second rotating square head is provided on the outer wall of the connecting nut.

10. The connector locking and anti-loosening device according to claim 2, characterized in that: The clamping protrusion is cylindrical, and the cross section of the screw-in groove is rectangular.

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