High-voltage connector plug

Abstract

The utility model relates to a high-voltage connector plug, which is sequentially and coaxially provided with a threaded sleeve, a shell, an insulating sleeve, an adapter, a male contact pin, an insulating sealing plug and a cable locking cap from front to back, the front end of the shell is connected in the rear end of the threaded sleeve, and the insulating sleeve enters through the rear end of the shell and is attached to the inner wall of the shell. The front end of the adapter is connected to the interior of the insulating sleeve, the rear end of the adapter is tightly attached to the insulating sealing plug, the male contact pin is connected to the interior of the adapter, the cable locking cap is attached to the tail end of the insulating sleeve after being tightened and is connected with the shell, the stripping cable penetrates through the cable locking cap, the insulating sealing plug and the adapter, and a wire in the stripping cable is connected with the tail end of the male contact pin. According to the utility model, the tail end can be effectively matched with the sealed high-voltage socket for use by screwing the cable locking cap, so that the internal insulation sealing plug shrinks and extrudes the cable, thereby fixing the cable, and the cable fixing device is simple in structure, stable in output voltage, good in insulation, and capable of being repeatedly used, and effectively reduces the use cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high voltage connector plug. BACKGROUND

[0002] The types of plugs equipped with high-voltage sockets mainly include banana plugs, spiral plugs, and straight plugs. These plugs are usually used for the connection of high-voltage electrical equipment to ensure the stability and safety of electrical connection.

[0003] The existing high-voltage socket equipped with a plug has a cable end fixing method of crimping process. After the cable is connected with the internal pin of the plug, the special crimping pliers is used to compress the external metal ring of the cable, and the deformed metal ring tightly clamps the cable to realize the fixation of the cable. This process is a one-time process and cannot be used twice, resulting in an increase in use cost. SUMMARY

[0004] In view of the problems in the background art, the utility model provides a high-voltage connector plug with a detachable end. The end is fixed by rotating the cable locking cap, which makes the internal insulation sealing plug shrink and press the cable, thereby fixing the cable. The plug can be repeatedly used, effectively reducing the use cost.

[0005] The utility model aims to realize the following technical scheme:

[0006] A high-voltage connector plug coaxially has a threaded sleeve, a shell, an insulation sleeve, an adapter, a male pin, an insulation sealing plug, and a cable locking cap from front to back. The front end of the threaded sleeve is connected with a high-voltage socket. The front end of the shell is connected to the rear end of the threaded sleeve. The insulation sleeve enters the shell through the rear end of the shell and is attached to the inner wall of the shell. The front end of the adapter is connected to the inside of the insulation sleeve, and the rear end is attached to the insulation sealing plug. The male pin is connected to the adapter. The rear end of the insulation sealing plug is located in the cable locking cap. The cable locking cap is attached to the tail end of the insulation sleeve and connected with the shell after being tightened. The stripped cable passes through the cable locking cap, the insulation sealing plug, and the adapter. The internal wire is connected to the tail end of the male pin.

[0007] Preferably, the threaded sleeve has internal threads, and the internal threads at the front end are matched with external threads of the high-voltage socket.

[0008] Preferably, the outer wall of the threaded sleeve is provided with knurling to increase friction and facilitate rotation.

[0009] Preferably, the front end of the shell is provided with external threads, and the external threads of the shell are matched with internal threads at the rear end of the threaded sleeve.

[0010] Preferably, the rear end of the shell is provided with external threads, and the external threads at the rear end of the shell are matched with internal threads provided in the cable locking cap.

[0011] Preferably, the threaded sleeve end is provided with a step to prevent it from sliding off the housing after being screwed onto the housing.

[0012] Preferably, the inside of the insulating sleeve is provided with a step, and the adapter front end surface is in thrusting cooperation with the insulating sleeve inside step surface.

[0013] Preferably, the adapter front end is provided with an internal thread, and the end is provided with a channel for accommodating the stripped cable; the male pin front end is provided with an external thread matched with the adapter internal thread, and the end is provided with a welding hole for accommodating the stripped cable internal wire; the wire is welded with the male pin end welding hole, and the male pin is connected with the adapter internal thread and filled with resin to be integrated and then loaded into the insulating sleeve.

[0014] Further, the length of the insulating sleeve is not less than the creepage distance of the working voltage.

[0015] Further, the adapter, the insulating sleeve and the insulating sealing plug are made of insulating material, the threaded sleeve, the housing and the cable locking cap are metal materials, and the male pin is copper gold-plated material with good conductivity.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The end of the utility model is tightened by the cable locking cap, can be effectively used in cooperation with the sealed high-voltage socket, makes the internal insulating sealing plug shrink and extrude the cable, thereby fixing the cable, the design structure is simple, the output voltage is stable, the insulation is good, and the utility model can be repeatedly used, effectively reduces the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is high-voltage connector plug structure exploded view of the utility model;

[0019] Figure 2 It is high-voltage connector plug sectional view of the utility model;

[0020] Figure 3 It is high-voltage connector plug assembly schematic view of the utility model;

[0021] Figure 4 It is adapter structure schematic view of the utility model;

[0022] Figure 5 It is male pin structure schematic view of the utility model.

[0023] In the drawing: 1, knurled threaded sleeve; 2, housing; 3, insulating sleeve; 4, adapter; 5, male pin; 6, insulating sealing plug; 7, cable locking cap; 8, stripped cable. DETAILED DESCRIPTION

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] like Figures 1 to 3 As shown, a high-voltage connector plug of this utility model includes, from front to back, a knurled sleeve 1, a housing 2, an insulating sleeve 3, an adapter 4, a male pin 5, an insulating sealing plug 6, a cable locking cap 7, and a cable 8, all coaxially arranged.

[0026] The outer wall of the knurled sleeve 1 is provided with 8mm wide knurling, and the end is provided with a step to prevent it from slipping off the outer shell 2 after being screwed into the external thread on the outer shell 2.

[0027] The insulating sleeve 3 is fitted to the inner wall of the housing 2. The insulating sleeve 3 has a step inside. The front end of the adapter 4 is thrust-fitted with the step inside the insulating sleeve 3. The rear end of the adapter 4 is tightly fitted with the insulating sealing plug 6. After the cable locking cap 7 is screwed into the housing 2, the tail end of the insulating sleeve 3 is fitted with the cable locking cap 7 to ensure the internal safe creepage distance.

[0028] like Figure 4 As shown, the adapter 4 has an internal threaded hole 401 at the front end for male pins to be screwed in, and a channel 402 at the end for accommodating stripped high-voltage cables. The channel is relatively long to ensure a safe creepage distance for the working voltage. The left end face in the figure is the front end, and the right end face is the end face.

[0029] like Figure 5 As shown, the male connector pin 5 has a welding hole 501 at its end to accommodate the wire, and an external thread 502 at its front end to mate with the internal threaded hole 401 of the adapter. The wire of the stripped cable is welded to the welding hole 501 at the end of the male connector pin, connected to the internal thread of the adapter, and then filled with resin to bond and cure into one piece before being installed in an insulating sleeve. The front part of the male connector pin 5 has a cylinder 503 with a diameter of 1mm, which contacts the socket contact.

[0030] The stripped cable 8 passes through the channel 402 of the cable locking cap 7, the insulation sealing plug 6 and the adapter 4, the wires inside are connected with the tail end of the male pin 5 by soldering, the male pin 5 is matched with the inside of the adapter 4 by screwing and filled with resin to be integrated, and then loaded into the insulation sleeve 3, the insulation sleeve 3 is attached to the inner wall of the shell 2, and the length is not less than the creepage distance of the working voltage. The cable locking cap 7 is screwed with the shell 2, the tail end of the insulation sleeve 3 is attached to the cable locking cap 7, the internal thread provided at the front end of the knurled threaded sleeve 1 is matched with the external thread of the high-voltage socket, after the high-voltage connector plug is tightly inserted into the high-voltage socket, the internal male pin 5 of the high-voltage connector plug is in close contact with the socket contact fixed in the socket in the axial direction, and the knurled threaded sleeve 1 is tightened, so that the high-voltage connector plug is effectively prevented from loosening and falling off to cause a safety accident during work.

[0031] The insulation sealing plug 6 can be radially contracted, when the cable locking cap 7 is tightened backward, the insulation sealing plug 6 is contracted under the action of the taper surface matched with the cable locking cap 7, and the insulation sealing plug 6 is tightly wrapped on the outer skin of the stripped cable 8 in the process of contraction, so that the stripped cable 8 is prevented from being separated from the plug shell.

[0032] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical scheme of the present application. Any modification, equivalent change and modification of the above embodiments, which does not depart from the technical scheme of the present application, is still within the scope of the present application.

Claims

1. A high voltage connector plug, characterized by: The plug is coaxially provided with a threaded sleeve, a shell, an insulating sleeve, an adapter, a male pin, an insulating sealing plug and a cable locking cap from front to back, the threaded sleeve is connected with the high-voltage socket at the front end, the shell is connected with the rear end of the threaded sleeve at the front end, the insulating sleeve is combined with the inner wall of the shell through the rear end of the shell, the adapter is connected with the inside of the insulating sleeve at the front end, and the rear end is tightly combined with the insulating sealing plug, the male pin is connected with the inside of the adapter, the rear end of the insulating sealing plug is located in the cable locking cap, the cable locking cap is combined with the tail end of the insulating sleeve and the shell after being screwed, and the stripped cable passes through the cable locking cap, the insulating sealing plug and the adapter, and the wire inside the stripped cable is connected with the tail end of the male pin.

2. A high voltage connector plug as claimed in claim 1, characterized in that: The threaded sleeve is internally provided with internal threads, and the internal threads at the front end are matched with external threads of the high-voltage socket.

3. A high voltage connector plug as claimed in claim 2, characterized in that: The outer wall of the threaded sleeve is provided with knurling.

4. A high voltage connector plug as claimed in claim 2, characterized in that: The front end of the shell is provided with external threads, and the external threads of the shell are matched with the internal threads at the rear end of the threaded sleeve.

5. A high voltage connector plug as claimed in claim 4, characterized in that: The threaded sleeve is provided with a step at the tail end, which prevents the threaded sleeve from sliding off the shell after being screwed on the external threads of the shell.

6. A high voltage connector plug as claimed in claim 4, characterized in that: The rear end of the shell is provided with external threads, and the external threads at the rear end of the shell are matched with internal threads provided in the cable locking cap.

7. A high voltage connector plug as claimed in claim 1, characterized in that: The inside of the insulating sleeve is provided with a step, and the front end surface of the adapter is in thrusting cooperation with the step surface inside the insulating sleeve.

8. A high voltage connector plug as claimed in claim 7, characterized in that: The front end of the adapter is provided with internal threads, and the tail end is provided with a channel for accommodating the stripped cable, the front end of the male pin is provided with external threads matched with the internal threads of the adapter, and the tail end is provided with a welding hole for accommodating the wire inside the stripped cable, the wire is welded with the welding hole at the tail end of the male pin, the male pin is connected with the internal threads of the adapter and filled with resin to be integrated and then loaded into the insulating sleeve.

9. A high voltage connector plug as claimed in claim 8, characterized in that: The length of the insulating sleeve is not less than the creepage distance of the working voltage.

10. A high voltage connector plug as claimed in any one of claims 1 to 9, characterized in that: The adapter, the insulating sleeve and the insulating sealing plug are made of insulating materials, the threaded sleeve, the shell and the cable locking cap are made of metal materials, and the male pin is made of copper-plated gold material.

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