CN216085553U

CN216085553U - Locking and anti-loosening device for connector

Info

Publication number: CN216085553U
Application number: CN202122511106.6U
Authority: CN
Inventors: 吕凌志; 杨鑫
Original assignee: Changsha Xingda Electric Appliance Manufacturing Co ltd
Current assignee: Changsha Xingda Electric Appliance Manufacturing Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-03-18
Anticipated expiration: 2031-10-19

Abstract

The utility model discloses a locking and anti-loosening device for a connector, which comprises a connecting male end, an inner core assembly, a connecting nut, a compression spring and a locking device, wherein the connecting male end is provided with external threads, the inner core assembly comprises first clamping bosses and clamping convex columns which are arranged at intervals, internal threads are arranged in the connecting nut, boss avoiding grooves are also arranged in the connecting nut, one end of the inner core assembly extends into the connecting male end, the first clamping bosses are abutted against the end part of the connecting male end, the connecting nut is connected with the external threads of the connecting male end through the matching of the external threads and the internal threads, the locking device is hollow, boss locking grooves are arranged on the inner wall of the locking device, the clamping convex columns are clamped into the boss locking grooves, and the compression spring is arranged between the connecting nut and the locking device. The utility model discloses a it has the not hard up more serious, drop even, the poor technical problem of stability to aim at solving the connector among the background art between connecting public end and being connected female end.

Description

Locking and anti-loosening device for connector

Technical Field

The utility model belongs to the technical field of connectors, and particularly relates to a locking and anti-loosening device for a connector.

Background

The connector is used for connecting cables (wires) between equipment, and in order to ensure the stability in the signal transmission process, most of the existing M12 connectors adopt a locking design, but the structural form basically adopts axial thrust compression to ensure locking. Such as: chinese patent publication No. 106129717a discloses an M12 connector anti loosening structure, including coupling nut, the casing that is provided with straight tube and screwed pipe, the straight tube is connected with the screwed pipe, the connection front end of casing is the screw thread end, coupling nut inside wall one end is provided with connecting thread, coupling nut passes through the connecting thread cover on the screwed pipe, the coupling nut inside wall other end is provided with the mounting groove, elastomeric element is equipped with in the mounting groove.

The shortcoming of the prior art is that the M12 connector anti-loosening structure has the problem that the looseness between the connection female end and the connection male end is serious and even falls off due to insufficient locking force or under a long-term vibration environment. The stability and reliability of the signal transmission process can not be ensured completely for a long time.

Therefore, there is a need to provide a new connector locking and anti-loosening device to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Based on this, the utility model provides a locking and anti-loosening device of a connector, which aims to solve the technical problems that in the M12 connector in the background technology, the looseness between a male connection end and a female connection end is serious, even the looseness exists, and the stability and the reliability in the signal transmission process cannot be ensured.

(II) technical scheme

In order to solve the technical problem, the utility model provides a locking and anti-loosening device for a connector, which comprises a connecting male end, an inner core assembly, a connecting nut, a compression spring and a locking device, the male connecting end is provided with external threads, the inner core component comprises a first clamping boss and a clamping convex column which are arranged at intervals, an internal thread is arranged in the connecting nut, a boss avoiding groove is also arranged in the connecting nut, one end of the inner core component extends into the connecting male end, the first clamping boss is abutted against the end part of the connecting male end, the connection between the connecting nut and the external thread of the connecting male end is realized through the matching 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 convex column is clamped into the boss locking groove, and the compression spring is arranged between the connecting nut and the locking device.

Preferably, still be equipped with the groove of screwing in the locking device, the groove of screwing in by locking device is close to coupling nut's one end to extend in the locking device, boss locking groove is located the afterbody in the groove of screwing in, the degree of depth in boss locking groove is greater than the degree of depth in the groove of screwing in.

Preferably, the screwing groove is a spiral groove, the screwing direction of the screwing groove is left-handed, and the screwing direction of the internal thread and the screwing direction of the external thread are right-handed.

Preferably, the inner core subassembly includes the inner core terminal, the inner core terminal includes that cylindrical inner core main part and ring are located inner core main part outer wall first joint boss, the one end of inner core main part stretches into connect in the public end, the inner core subassembly still includes that the metal attaches the shell, the metal attaches the shell and includes: the sleeve is fixedly sleeved at the other end of the inner core main body, and the clamping convex column is protruded from the outer wall of the sleeve.

Preferably, the core terminal is made of an insulating material, the metal auxiliary shell is made of a metal material, and the core terminal and the metal auxiliary shell are integrally crimped.

Preferably, the number of the clamping convex columns is 3, and the 3 clamping convex columns are uniformly distributed along the circumferential direction of the sleeve; the number of the boss avoiding grooves is 3, and the 3 boss avoiding grooves are uniformly distributed along the circumferential direction of the connecting nut; the quantity of revolving into the groove is 3, and 3 revolve into the groove edge locking device's circumference equipartition, every the afterbody of revolving into the groove all is equipped with one boss locking groove.

Preferably, one end of the locking device, which is close to the connecting nut, is provided with a spring accommodating groove which is formed by sinking, and the compression spring is installed in the spring accommodating groove.

Preferably, the compression spring is a wave spring.

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.

Preferably, the clamping convex column is cylindrical, and the cross section of the screwing groove is rectangular.

(III) advantageous effects

Compared with the prior art, the locking and anti-loosening device for the connector has the advantages that:

according to the locking and anti-loosening device for the connector, the anti-thread locking device at the tail part is added, the locking device is matched with the connecting nut, the anti-loosening function is realized under the action of the compression spring, the anti-rotation function is realized through the matching of the locking device and the metal auxiliary shell, and through the structure, the stability of the inner core terminal in the connecting nut can be realized, and the anti-rollback can be realized after the locking. The locking and anti-loosening device for the connector is simple in structure, convenient to use and assemble, firm and durable, and can effectively guarantee stability in a signal transmission process.

Drawings

The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the utility model in any way, and in which:

fig. 1 is an overall structural sectional view of a connector locking and loosening prevention device according to an embodiment of the present invention;

FIG. 2 is an exploded view of a connector lock anti-loosening device according to an embodiment of the present invention;

FIG. 3 is a perspective view of one direction of a coupling nut in the connector locking anti-loosening device according to the embodiment of the present invention;

FIG. 4 is a perspective view of another orientation of a coupling nut in the connector locking anti-loosening apparatus according to the embodiment of the present invention;

fig. 5 is a perspective view of one direction of a locking device in the connector locking anti-release device according to the embodiment of the present invention;

fig. 6 is a perspective view of another orientation of the locking device in the connector locking anti-release device according to the embodiment of the present invention;

fig. 7 is a structural view showing that a compression spring is mounted in a locking device in a connector locking and loosening prevention device according to an embodiment of the present invention.

Description of reference numerals:

1. the connecting structure comprises a connecting male end, 2 an inner core terminal, 3 a metal auxiliary shell, 4 a connecting nut, 5 a compression spring, 6 a locking device, 11 external threads, 12 a first rotating square head, 21 an inner core main body, 22 a first clamping boss, 31 a metal auxiliary shell, 32 a clamping convex column, 41 internal threads, 42 a boss avoiding groove, 43 a second rotating square head, 44 a second clamping boss, 61 a boss locking groove, 62 a rotating groove and 63 a spring accommodating groove.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model will be further described with reference to the accompanying figures 1-7.

Please refer to fig. 1-4, a locking and anti-loosening device for a connector, which comprises a male connection end 1, an inner core assembly, a connection nut 4, a compression spring 5 and a locking device 6, wherein the male connection end 1 has an external thread 11, the inner core assembly comprises a first clamping boss 22 and a clamping convex column 32 which are arranged at intervals, an internal thread 41 is arranged in the connection nut 4, a boss avoiding groove 42 is further arranged in the connection nut 4, one end of the inner core assembly extends into the male connection end 1, the first clamping boss 22 abuts against the end of the male connection end 1, the connection nut 4 is in threaded connection with the male connection end 1 by matching the external thread 11 with the internal thread 41, the locking device 6 is hollow, a boss locking groove 61 is arranged on the inner wall of the locking device 6, the clamping convex column 32 is clamped into the boss locking groove 61, and the compression spring 5 is arranged between the connection nut 4 and the locking device 6.

The working principle of the present invention is specifically explained as follows: during assembly, the inner core assembly is sleeved into the connecting nut 4, and during the process of sleeving, the clamping convex column 32 is aligned with the boss avoiding groove 42 and sleeved. Then the compression spring 5 is sleeved into the other end of the inner core component, and then the locking device 6 is sleeved on the compression spring 5, so that the compression spring 5 is positioned between the connecting nut 4 and the locking device 6.

When in use, the connecting male end 1 and the connecting nut 4 are inserted oppositely. Then the internal thread 41 of the connecting nut 4 is screwed with the external thread 11 of the connecting male end 1, and after the connecting male end 1 is completely meshed with the connecting nut 4, the second clamping boss 44 of the connecting nut 4 is tightly attached to the first clamping boss 22 of the inner core assembly. The left-handed locking device 6 and the clamping convex column 32 are clamped in the boss locking groove 61.

In this embodiment, after the clamping convex column 32 is clamped into the convex column locking groove 61, the rotation of the inner core assembly relative to the locking device 6 can be effectively limited, the compression spring arranged between the connecting nut 4 and the locking device 6 is compressed to generate a reaction force, so that the locking device 6 is limited to be close to the connecting nut 4, the convex column locking groove 61 in the locking device 6 is clamped on the clamping convex column 32 of the inner core assembly, and the loosening effect is achieved.

According to the locking and anti-loosening device for the connector, the locking device 6 is matched with the connecting nut 4, and an anti-loosening function is realized under the action of the compression spring 5; the locking device 6 is matched with the metal attached shell 3 to realize the anti-rotation function. The locking and anti-loosening device for the connector is simple in structure, convenient to assemble, firm and durable, and can effectively guarantee stability in a signal transmission process.

Referring to fig. 5-7, according to the embodiment of the present invention, a screwing groove 62 is further formed in the locking device 6, the screwing groove 62 extends from one end of the locking device 6 close to the coupling nut 4 to the inside of the locking device 6, the boss locking groove 61 is formed at the tail of the screwing groove 62, and the depth of the boss locking groove 61 is greater than that of the screwing groove 62. In this embodiment, through setting up the spin groove 62, do benefit to guide joint projection 32 card to go into in boss locking groove 61, do benefit to the convenience that improves the assembly. The depth of the boss locking groove 61 is larger than that of the screwing groove 62, so that the clamping convex column 32 is prevented from being disengaged.

According to the embodiment of the present invention, the screwing groove 62 is a spiral groove and the screwing direction of the screwing groove 62 is left-handed, and the screwing direction of the external thread 11 is right-handed. In the present embodiment, the locking device 6 adopts left-handed locking, and the locking direction thereof is opposite to the locking direction of the coupling nut 4. Therefore, when the coupling nut 4 comes loose, the direction of displacement thereof is the direction close to the locking device 6; when the locking device 6 is loosened, the displacement direction is close to the connecting nut 4; and the compression spring 5 is arranged between the two to provide axial jacking force. Therefore, the locking and anti-loosening device for the connector can further prevent loosening by adopting a left-handed and right-handed matched structure, and effectively ensures the connection stability of the locking and anti-loosening device for the connector.

According to the specific embodiment of the present invention, the core assembly includes a core terminal 2, the core terminal 2 includes a cylindrical core main body 21 and a first clamping boss 22 annularly disposed on an outer wall of the core main body 21, one end of the core main body 21 extends into the connection male end 1, the core assembly further includes a metal auxiliary shell 3, and the metal auxiliary shell 3 includes: a sleeve 31 fixedly sleeved at the other end of the inner core main body 21 and a clamping convex column 32 protruding from the outer wall of the sleeve 31.

More specifically, the core terminal 2 is made of an insulating material, the metal sub-shell 3 is made of a metal material, and the core terminal 2 and the metal sub-shell 3 are crimped integrally. In the embodiment, the core assembly comprises a core terminal 2 and a metal auxiliary shell 3, which are formed in a split manner and then are pressed into a whole. The core terminal 2 is made of an insulating material, and the insulating property is ensured. The metal auxiliary shell 3 is made of metal materials, has good wear resistance, can resist abrasion during repeated disassembly and assembly, and ensures the integral service performance and the service life of the inner core assembly.

According to the specific embodiment of the present invention, 3 of the number of the clamping convex columns 32 are provided, and 3 clamping convex columns 32 are uniformly distributed along the circumference of the sleeve 31; the number of the boss avoiding grooves 42 is 3, and the 3 boss avoiding grooves 42 are uniformly distributed along the circumferential direction of the connecting nut 4; the number of the screwing grooves 62 is 3, the 3 screwing grooves 62 are uniformly distributed along the circumferential direction of the locking device 6, and a boss locking groove 61 is arranged at the tail of each screwing groove 62. In this embodiment, by providing a plurality of clamping projections 32, the clamping force uniformity and stability can be ensured. It should be noted that the number of the snap-in convex columns 32 in the present embodiment is 3, but is not limited to 3, and the number of the snap-in convex columns 32 may also be 1, 2, or more than 4. All falling within the scope of the present invention.

According to the embodiment of the present invention, the locking device 6 is provided with a recessed spring receiving groove 63 at an end thereof adjacent to the coupling nut 4, and the compression spring 5 is installed in the spring receiving groove 63. More specifically, the spring housing groove 63 is a cylindrical groove. In the present embodiment, the spring housing groove 63 is provided to facilitate stable housing of the compression spring 5.

According to an embodiment of the utility model, the compression spring 5 is a wave spring. In this embodiment, the bellows spring has the following advantages: the rigidity range is large, the buffering and vibration absorption capacity is strong, and the change of the material per unit volume is large. And the rigidity can be adjusted by the number of the combined pieces, the structure size is compact, and the required installation space is smaller under the condition of the same physical parameters.

According to the embodiment of the present invention, the locking protrusion 32 is cylindrical, and the cross section of the screwing slot 62 is rectangular.

According to an embodiment of the utility model, the outer wall of the connection male end 1 is provided with a first rotary square 12 and the outer wall of the connection nut 4 is provided with a second rotary square 43. The first rotating square head 12 and the second rotating square head 43 are both used for wrench locking, and after the wrench is sleeved in, the connecting nut 4 or the connecting male end 1 is rotated reversely to realize thread locking of the two.

In the above embodiment, the locking and anti-loosening device for a connector according to the present invention provides a structure for fastening a coupling nut 4 to a core terminal 2, and one or more locking projections 32 are provided on a metal accessory housing 3, the locking projections 32 can slide along a corresponding number of rectangular screw grooves provided inside a locking device 6, and an axial tightening force is provided by a corrugated spring placed between the coupling nut 4 and the locking device 6, and the locking projections 32 finally slide into an arc groove (boss locking groove 61) at the end of the screw groove. The utility model avoids adopting a complicated connector connection form, greatly simplifies the assembly steps and saves the assembly time; and has the advantages of firmness, durability, convenient installation, compact structure and the like.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A locking and anti-loosening device for a connector is characterized by comprising a connecting male end, an inner core assembly, a connecting nut, a compression spring and a locking device, the male connecting end is provided with external threads, the inner core component comprises a first clamping boss and a clamping convex column which are arranged at intervals, an internal thread is arranged in the connecting nut, a boss avoiding groove is also arranged in the connecting nut, one end of the inner core component extends into the connecting male end, the first clamping boss is abutted against the end part of the connecting male end, the connection between the connecting nut and the external thread of the connecting male end is realized through the matching 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 convex column is clamped into the boss locking groove, and the compression spring is arranged between the connecting nut and the locking device.

2. The connector locking and anti-loosening device according to claim 1, wherein a screwing groove is further formed in the locking device, the screwing groove extends into the locking device from one end, close to the connecting nut, of the locking device, the boss locking groove is formed in the tail of the screwing groove, and the depth of the boss locking groove is larger than that of the screwing groove.

3. The connector locking and anti-loosening device according to claim 2, wherein the screwing groove is a spiral groove and the screwing direction of the screwing groove is left-handed, and the screwing directions of the internal thread and the external thread are both right-handed.

4. The locking and anti-loosening device for connector according to claim 3, wherein the inner core assembly comprises an inner core terminal, the inner core terminal comprises a columnar inner core main body and the first clamping boss annularly arranged on the outer wall of the inner core main body, one end of the inner core main body extends into the connecting male end, the inner core assembly further comprises a metal attached shell, and the metal attached shell comprises: the sleeve is fixedly sleeved at the other end of the inner core main body, and the clamping convex column is protruded from the outer wall of the sleeve.

5. The connector locking anti-loosening device according to claim 4, wherein the core terminal is made of an insulating material, the metal sub-shell is made of a metal material, and the core terminal is crimped integrally with the metal sub-shell.

6. The locking and anti-loosening device for the connector according to claim 5, wherein the number of the clamping convex columns is 3, and the 3 clamping convex columns are uniformly distributed along the circumferential direction of the sleeve; the number of the boss avoiding grooves is 3, and the 3 boss avoiding grooves are uniformly distributed along the circumferential direction of the connecting nut; the quantity of revolving into the groove is 3, and 3 revolve into the groove edge locking device's circumference equipartition, every the afterbody of revolving into the groove all is equipped with one boss locking groove.

7. The connector locking/loosening prevention device as claimed in claim 1, wherein a recessed spring receiving groove is formed at an end of the locking device adjacent to the coupling nut, and the compression spring is installed in the spring receiving groove.

8. The connector locking anti-loosening device of claim 1, wherein the compression spring is a wave spring.

9. The connector locking and anti-loosening device as claimed in claim 1, wherein the outer wall of the connection male end is provided with a first rotating square head, and the outer wall of the connection nut is provided with a second rotating square head.

10. The connector locking and anti-loosening device as claimed in claim 2, wherein the clamping boss is cylindrical, and the cross section of the screwing groove is rectangular.