Plug of connector

Abstract

A plug of a connector comprises a connector shell and a tail sleeve, the rear end of the connector shell is in threaded connection with the tail sleeve, and the plug of the connector is characterized in that the upper surface of the connector shell is provided with a thread sleeve locking piece matched with the tail sleeve, and the upper surface of the connector shell is provided with an installation groove hole for the thread sleeve locking piece to be placed in and slide back and forth; a tooth opening is formed in the front side of the tail sleeve along the circumference, the rear end of the threaded sleeve locking piece is provided with a one-way lock catch which is meshed with the tooth opening and enables the tail sleeve to only rotate in a one-way mode to be tightened with the connector shell, and an elastic piece is arranged in the installation groove hole to enable the threaded sleeve locking piece to always keep a backward movement trend to lock the tail sleeve. The tail sleeve is reasonable in structure, the screw sleeve locking piece is additionally arranged, so that the tail sleeve is not prone to being unscrewed by hands, manual operation and natural loosening risks are avoided, resetting is convenient, safety and stability of product use are effectively guaranteed, and the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors and relates to a connector plug which is firmly installed and safe to use. Background Art

[0002] A connector is a connection device that connects multiple signal lines or power lines in sequence. It is widely used in various electrical circuits and plays the role of connecting or disconnecting circuits. The structure of the connector generally includes a shell and a tail sleeve, and the rear end of the shell is connected to the tail sleeve. Most of the existing connector shells and tail sleeves are connected and fixed with a threaded structure. After the connector is assembled, the tail sleeve relies on the thread locking force to maintain the tightness of the installation. In a vibrating environment or after aging, the tail sleeve can be unscrewed by hand. In this way, when the connector is passing high voltage and high current, there will be safety hazards.

[0003] After investigation, the best existing patent is the Chinese patent CN202222286856.2 "Plug and its connector", which includes a plug housing, a tail cover and a button. The upper end face of the middle part of the plug housing is axially formed with a mounting groove for the sliding member to be placed and move forward and backward. The front end of the mounting groove is provided with a through hole for the front end of the sliding member to extend out. The front end of the sliding member extends out of the mounting groove to form a locking part that locks with the corresponding socket / plug. The rear end of the sliding member extends upward with an inclined surface and bends forward to form a claw part that is connected with the button. A reset spring is supported between the inner wall of the rear end of the mounting groove and the rear end of the sliding member. The button is arranged in the mounting groove above the sliding member. The rear end of the button is hinged with the rear end of the mounting groove. The front end of the button is bent to form a hook part that cooperates with the claw part. The upper end of the button is provided with a button cover that is sealed and sleeved with the mounting groove. This structure increases the waterproofness and the button is not easy to fall off, but the tail cover can be unscrewed by hand like the traditional connector, which also has safety hazards. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a connector plug with a reasonable structure, convenient operation and safe use in view of the above-mentioned technical status quo, and to add a screw sleeve locking piece so that the tail sleeve is not easy to unscrew by hand, thereby avoiding the risks of human operation and natural loosening.

[0005] The utility model solves the above-mentioned technical problem by adopting the following technical scheme: a plug of a connector, comprising a connector shell and a tail sleeve, the rear end of the connector shell being threadedly connected to the tail sleeve, and characterized in that: a screw sleeve locking piece cooperating with the tail sleeve is provided on the upper surface of the connector shell, a mounting slot hole is formed on the upper surface of the connector shell for the screw sleeve locking piece to be inserted and slide forward and backward, a tooth opening is formed along the circumference of the front side of the tail sleeve, a one-way lock buckle is provided at the rear end of the screw sleeve locking piece which meshes with the tooth opening and enables the tail sleeve to be rotated in one direction and tightened with the connector shell only, and an elastic piece is provided in the mounting slot hole so that the screw sleeve locking piece always maintains a backward movement trend to lock the tail sleeve.

[0006] As an improvement, a stop is provided in the installation slot, and a buckle point that cooperates with the stop is convexly provided on the lower surface of the screw sleeve locking piece. When the buckle point of the screw sleeve locking piece cooperates and locks with the stop, the screw sleeve locking piece is separated from the tail sleeve. A button that can disengage and reset the screw sleeve locking piece from the stop is provided on the connector housing above the screw sleeve locking piece. There is no need for tools to press the screw sleeve locking piece all the time, which is convenient for operation and use.

[0007] Furthermore, the screw sleeve locking piece is in the shape of a strip, and a button can be slidably arranged above the screw sleeve locking piece in a forward and backward limited manner. The one-way lock buckle at the rear end of the screw sleeve locking piece extends out of the button and is located on the front side of the external thread of the connector housing. An elastic piece is supported between the front end of the screw sleeve locking piece and the inner wall of the button, so that the screw sleeve locking piece has a tendency to always move backward and engage with the tail sleeve to facilitate operation.

[0008] Furthermore, the mounting slot hole includes a strip slot or a strip hole or a combination thereof.

[0009] Furthermore, the installation slot hole is a strip hole at the front and a strip slot at the rear, and the two are connected, which makes it easy to locate and install the screw sleeve locking member and the elastic member and prevents them from falling out easily.

[0010] Furthermore, the front end of the button is a locking piece, which cooperates with the socket locking groove of the connector. The top inner surface of the button is provided with a guide groove, which cooperates with the locking block located above the front strip hole of the connector housing to prevent it from slipping, so as to facilitate operation and use.

[0011] Preferably, the one-way lock is a ratchet-shaped inverted buckle structure, and the tooth opening at the front end of the inner wall of the tail sleeve is a correspondingly matched triangular structure, and the structure is simple and easy to use.

[0012] Furthermore, a push block is convexly provided on the upper surface of the screw sleeve locking piece at the front side of the one-way lock buckle to facilitate pushing the screw sleeve locking piece forward, so that a tool can push against the screw sleeve locking piece.

[0013] Furthermore, the upper surface of the screw sleeve locking piece is provided with a concave surface behind the top block, and a three-dimensional arrow mark for pushing forward is provided on the concave surface, so that the tool always presses against the screw sleeve locking piece and is not easy to slip off.

[0014] Furthermore, the longitudinal section of the stop is a triangle, and the longitudinal section of the buckle point on the lower surface of the screw sleeve locking piece is an inverted triangle. When the buckle point of the screw sleeve locking piece is locked with the stop, the rear end of the screw sleeve locking piece is disengaged from the front end tooth of the tail sleeve to facilitate operation and use.

[0015] Finally, the teeth are distributed on the inner wall of the tail sleeve and the front part of the internal thread, and the structure is reasonable and beautiful.

[0016] Compared with the prior art, the advantages of the utility model are: a screw sleeve locking piece is arranged on the upper surface of the rear part of the connector housing, and a tooth opening that cooperates with the one-way lock buckle of the screw sleeve locking piece is arranged on the front side of the internal thread hole of the tail sleeve. When the connector housing and the tail sleeve are connected by threads, after the tail sleeve is tightened to a certain position, the one-way lock buckle meshes with the tooth opening, and the tail sleeve can only be tightened but not loosened, thus avoiding unscrewing the tail sleeve by hand, and making the connection firm and stable. The utility model has a reasonable structure, and by adding a screw sleeve locking piece, the tail sleeve is not easy to unscrew by hand, thus avoiding the risk of manual operation and natural loosening, and is easy to reset, effectively ensuring the safety and stability of product use, and extending the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a connector according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A cross-sectional view of

[0019] Figure 3 for Figure 1 Schematic diagram of the structure when the tail sleeve is separated;

[0020] Figure 4 for Figure 3 A cross-sectional view of

[0021] Figure 5 It is a cross-sectional view of the embodiment of the utility model when the tail sleeve is locked;

[0022] Figure 6 It is a cross-sectional view of an embodiment of the utility model when the threaded sleeve locking member reaches the stop and is disengaged from the tail sleeve. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 6 As shown, a connector plug comprises a connector housing 1 and a tail sleeve 2, the rear end of the connector housing 1 is threadedly connected to the tail sleeve 2, the upper surface of the connector housing 1 is provided with a screw sleeve locking member 3 that cooperates with the tail sleeve 2, the upper surface of the connector housing 1 is formed with a mounting slot 12 for the screw sleeve locking member 3 to be placed and slide forward and backward, the inner wall of the tail sleeve 2 and the front side of the internal thread are formed with a tooth opening 21 along the circumference, the rear end of the screw sleeve locking member 3 is provided with a one-way lock 31 that meshes with the tooth opening 21 and allows the tail sleeve 2 to only rotate in one direction and be tightened with the connector housing 1, and a spring 5 such as an elastic member is arranged in the mounting slot 12, so that the screw sleeve locking member 3 always maintains a backward movement trend to lock the tail sleeve 2.

[0025] As a further improvement and convenient use, a stop 11 is provided in the installation slot 12, and a buckle point 34 cooperating with the stop 11 is convexly provided on the lower surface of the screw sleeve locking piece 3. When the buckle point 34 of the screw sleeve locking piece 3 is locked with the stop 11, the screw sleeve locking piece 3 is separated from the tail sleeve 2, and the connector housing 1 is provided with a button 4 above the screw sleeve locking piece 3 for disengaging and resetting the screw sleeve locking piece 3 from the stop 11, so that the buckle point 34 is easy to buckle in or out, and when the buckle point 34 of the screw sleeve locking piece 3 is locked with the stop 11, there is no need for tools to press the screw sleeve locking piece 3 all the time, which can be convenient for operation.

[0026] The specific structure is as follows: the screw sleeve locking member 3 is strip-shaped, and the installation slot 12 can be a strip slot or a strip hole or a combination thereof. The present embodiment adopts a combination form, the front portion is a strip hole 12a, and the rear portion is a strip slot 12b, which are connected to facilitate positioning and installation of the spring 5 and the screw sleeve locking member 3. The bottom surface of the button 4 has edges on both sides, and the connector housing 1 has matching grooves on both sides of the strip hole 12a. Through the cooperation of the edges and the grooves, the button 4 can be slidably arranged on the screw sleeve locking member 3 in a front and rear limited manner. At the top, the one-way lock 31 at the rear end of the screw sleeve locking member 3 extends out of the button 4 and is located at the front side of the external thread of the connector housing 1. A spring 5 is supported between the front end of the screw sleeve locking member 3 and the inner wall of the button 4, so that the screw sleeve locking member 3 has a tendency to always move backwards and engage with the tail sleeve 2. The front end of the button 4 is a locking piece 41, which cooperates with the socket lock groove of the connector. The top inner surface of the button 4 is provided with a guide groove 42, which cooperates with the locking block 13 located above the front strip hole 12a of the connector housing 1 and extending backward to prevent the button 4 from slipping off. The one-way lock 31 adopts a ratchet-shaped undercut structure, and the undercut angle of the one-way lock 31 is 50-75°. The tooth opening 21 at the front end of the inner wall of the tail sleeve 2 is a corresponding right-angled triangle structure. The upper surface of the screw sleeve locking member 3 is provided with a top block 32 on the front side of the one-way lock 31, which is convenient for pushing the screw sleeve locking member 3 forward. The upper surface of the screw sleeve locking member 3 is provided with a triangular concave surface on the rear side of the top block 32, and a three-dimensional arrow mark 33 for pushing forward is provided on the concave surface. The longitudinal section of the stop 11 is preferably a triangle, and the longitudinal section of the buckle point 34 on the lower surface of the screw sleeve locking member 3 is preferably an inverted triangle, so that the buckle point 34 is easy to buckle in or out of. When the buckle point 34 of the screw sleeve locking member 3 is locked with the stop 11 of the installation slot 12, the rear end of the screw sleeve locking member 3 can be in a disengaged state with the tooth opening 21 of the front inner wall of the tail sleeve 2, which is convenient for twisting the tail sleeve 2.

[0027] An inner core component 6 is provided at the front end of the connector housing 1. The inner core component 6 is a functional component designed according to needs. The rear end of the inner core component 6 is connected to the cable or signal line, and then the wire clamping sleeve 7 and the sealing ring 8 are put on. A through hole is opened at the rear end of the tail sleeve 2 for the cable or signal line to pass through. Finally, the tail sleeve 2 and the connector housing 1 are threadedly connected.

[0028] The specific operation process is as follows:

[0029] Align the tail sleeve 2 with the rear section of the connector housing 1 and rotate and tighten it. After the tail sleeve 2 is tightened to a certain position, the one-way lock buckle 31 of the screw sleeve locking member 3 engages with the tooth opening 21 of the tail sleeve 2. At this time, the tail sleeve 2 can only be tightened and cannot be loosened. Figure 5 , without auxiliary tools, the tail sleeve 2 will not come loose.

[0030] When the tail sleeve 2 needs to be disassembled, a tool is used to support the top block 32 of the screw sleeve locking piece 3, and the screw sleeve locking piece 3 is pushed forward to separate the screw sleeve locking piece 3 from the tail sleeve 2. When the screw sleeve locking piece 3 reaches the stop 11, the buckle point 34 of the screw sleeve locking piece 3 cooperates with the stop to lock, and the screw sleeve locking piece 3 is positioned. Figure 6 The stopper 11 is provided so that when the tail sleeve 2 is disassembled and assembled, there is no need for tools to press against the screw sleeve locking member 3 all the time, which facilitates the operation.

[0031] When the screw sleeve locking piece 3 needs to be reset, the button 4 is slid backward. The screw sleeve locking piece 3 moves backward under the push of the button 4 and disengages from the stop 11. Under the action of the spring 5, the screw sleeve locking piece 3 is reset and meshes and locks with the tooth opening 21 of the tail sleeve 2 again.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A connector plug, comprising a connector housing and a tail sleeve, wherein the rear end of the connector housing is threadedly connected to the tail sleeve, and characterized in that: The upper surface of the connector shell is provided with a screw sleeve locking piece that cooperates with the tail sleeve. The upper surface of the connector shell is formed with a mounting slot hole for the screw sleeve locking piece to be placed in and slide back and forth. The front side of the tail sleeve is formed with a tooth opening along the circumference. The rear end of the screw sleeve locking piece is provided with a one-way lock buckle that meshes with the tooth opening so that the tail sleeve can only rotate in one direction and be tightened with the connector shell. An elastic piece is arranged in the mounting slot hole so that the screw sleeve locking piece always maintains a backward movement trend to lock the tail sleeve.

2. The connector plug according to claim 1, characterized in that: A stop is provided in the installation slot hole, and a buckle point cooperating with the stop is convexly provided on the lower surface of the screw sleeve locking piece. When the buckle point of the screw sleeve locking piece cooperates and locks with the stop, the screw sleeve locking piece is separated from the tail sleeve, and a button for disengaging and resetting the screw sleeve locking piece from the stop is provided on the connector housing above the screw sleeve locking piece.

3. The connector plug according to claim 2, characterized in that: The screw sleeve locking piece is in the shape of a strip, and the button can be slidably arranged above the screw sleeve locking piece in a forward and backward limited manner. The one-way lock buckle at the rear end of the screw sleeve locking piece extends out of the button and is located on the front side of the external thread of the connector housing. An elastic piece is supported between the front end of the screw sleeve locking piece and the inner wall of the button, so that the screw sleeve locking piece has a tendency to always move backward and engage with the tail sleeve.

4. The connector plug according to claim 3, characterized in that: The installation slot hole includes a strip slot or a strip hole or a combination thereof.

5. The connector plug according to claim 4, characterized in that: The installation slot hole is formed by connecting a strip-shaped hole at the front and a strip-shaped slot at the rear.

6. The connector plug according to claim 5, characterized in that: The front end of the button is a locking piece, which cooperates with the socket locking groove of the connector. The top inner surface of the button is provided with a guide slot, which cooperates with the locking block located above the front strip hole of the connector shell to prevent it from slipping.

7. The connector plug according to claim 1, characterized in that: The one-way lock is a ratchet-shaped inverted buckle structure, and the tooth opening at the front end of the inner wall of the tail sleeve is a correspondingly matched triangular structure.

8. The connector plug according to claim 1, characterized in that: The upper surface of the screw sleeve locking piece is convexly provided with a top block on the front side of the one-way lock buckle for pushing the screw sleeve locking piece forward.

9. The connector plug according to claim 8, characterized in that: The upper surface of the screw sleeve locking piece is provided with a concave surface behind the top block, and a three-dimensional arrow mark for pushing forward is provided on the concave surface.

10. The connector plug according to claim 2, characterized in that: The longitudinal section of the stop is a triangle, and the longitudinal section of the buckle point on the lower surface of the screw sleeve locking piece is an inverted triangle. When the buckle point of the screw sleeve locking piece cooperates and locks with the stop, the rear end of the screw sleeve locking piece disengages from the front end tooth opening of the tail sleeve.

11. The connector plug according to any one of claims 1 to 10, characterized in that: The tooth openings are distributed on the inner wall of the tail sleeve and the front part of the internal thread.

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