A waterproof quick-plug plug for vehicles

Abstract

The utility model relates to a quick-connect plug for a vehicle with a waterproof function, comprising a cylindrical insulating plug, a connecting column formed at the rear end of the insulating plug, a plurality of annularly distributed electrode pipes are inserted and fixed in the insulating plug near the outer ring of the insulating plug, the rear end of the electrode pipe is inserted in the connecting column, a circular pressing groove connected to the electrode pipe is formed on the outer wall of the connecting column, a protective shell is inserted on the insulating plug, the protective shell comprises a front protective sleeve fixed on the insulating plug, a conical transition pipe is formed at the rear end of the front protective sleeve, a pipe is formed at the rear end of the transition pipe, and a conical interface is formed on the inner wall of the pipe mouth. The structure is simple and compact, and the assembly is convenient and quick, and the assembled quick-connect plug has good insulation and waterproof effects.

Description

Technical field:

[0001] The utility model relates to the technical field of quick-insertion plugs, and more specifically to a vehicle quick-insertion plug with a waterproof function. Background technology:

[0002] A trailer is a vehicle towed by a car but without its own power drive device. It is a combination of a car (truck or tractor, forklift) and one or more trailers. Trucks and tractor cars are the driving sections of a car train, called the main car. The driven section towed by the main car is called a trailer. Air pipes, water pipes and cables are provided between the trailer and the main car. Quick plugs are fixed at both ends of the cable. The circuit connection between the trailer and the main car can be achieved through the quick plug. The cable and quick plug are generally in an open-air environment, so a good sealing and waterproofing effect is required between the cable and the quick plug. The existing quick plug is generally composed of a metal shell, a built-in insulating socket and a cable. Although it has good insulation and waterproofing functions, the structure is relatively complex and the assembly is relatively inconvenient. Therefore, it is necessary to design a quick plug with a simple structure, easy assembly and good insulation and waterproofing effects. Utility model content:

[0003] The utility model aims to solve the problems in the prior art and provide a vehicle quick-connect plug with waterproof function. The structure is simple and compact, the assembly is convenient and quick, and the assembled quick-connect plug has good insulation and waterproof effects.

[0004] A quick-connect plug for a vehicle with a waterproof function comprises a cylindrical insulating plug, a connecting column is formed at the rear end of the insulating plug, a plurality of annularly distributed electrode pipes are inserted and fixed in the insulating plug near the outer ring of the insulating plug, the rear end of the electrode pipe is inserted in the connecting column, a circular pressing groove connected to the electrode pipe is formed on the outer wall of the connecting column, a protective shell is inserted on the insulating plug, the protective shell comprises a front protective sleeve fixed on the insulating plug, a conical transition pipe is formed at the rear end of the front protective sleeve, a pipe is formed at the rear end of the transition pipe, and a conical interface is formed on the inner wall of the pipe mouth;

[0005] A cable bus is inserted into the pipe of the protective shell, and the branch lines in the cable bus are respectively inserted and crimped and fixed in the electrode pipe; an insulating heat shrink tube is fixed on the connecting column and the cable bus inside the protective shell;

[0006] A support seat sleeve is inserted onto the cable bus at the rear side of the protective housing. Mounting ear plates are formed on the support seat sleeve. The front end face of the support seat sleeve abuts against the rear end face of the connecting pipe and is fixedly adhered to the connecting pipe with glue. A conical pipe thread joint is formed at the front end of the support seat sleeve. A number of cutting grooves are formed on the pipe thread joint. The cutting grooves divide the pipe thread joint into a number of arc-shaped pressing pieces. A rubber sealing sleeve is inserted into the support seat sleeve. The front end of the rubber sealing sleeve is clamped between the cable bus and the pipe thread joint. The pipe thread joint is screwed and fixed into the interface of the protective housing.

[0007] Preferably, an insulating retaining ring is formed on the outer wall of the front end of the insulating plug. The insulating retaining ring abuts against the outer wall of the front end of the front protective sleeve.

[0008] Preferably, a guiding rib with a "冂"-shaped cross section is formed on the outer wall of the front side of the front protective sleeve. A triangular hook is formed at the rear end of the guiding rib. A limiting rib is formed on the outer wall of the insulating plug. The limiting rib is inserted into the guiding rib. A rectangular stopper is formed at the front end of the limiting rib. The stopper abuts against the front end face of the guiding rib.

[0009] Preferably, the rear end of the connecting column and the front end of the cable bus are located in the transition pipe of the protective housing. Clearances are provided between the inner wall of the protective housing and the outer walls of the connecting column and the cable bus.

[0010] Preferably, the taper of the conical pipe thread joint at the front end of the support seat sleeve is smaller than the taper of the inner interface of the protective housing.

[0011] Preferably, opposite sealing grooves are formed on the rear end face of the connecting pipe and the front end face of the support seat sleeve respectively. A sealing ring is inserted into the sealing grooves. The sealing ring is clamped between the connecting pipe and the support seat sleeve.

[0012] The beneficial effects of the present utility model are as follows:

[0013] This structure is simple and compact, convenient and fast to assemble, and the assembled quick-insert plug has good insulation and waterproof effects. Description of the drawings:

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the present utility model seen from above;

[0016] Figure 3 is a half-sectional structural schematic diagram of the present utility model.

[0017] In the figure: 1. Insulating plug; 11. Connecting column; 12. Press-fitting groove; 13. Insulating retaining ring; 14. Block; 2. Electrode connecting pipe; 3. Protective shell; 31. Front protective sleeve; 32. Transition pipe; 33. Connecting pipe; 34. Guide rib; 35. Hook; 36. Interface; 4. Support seat sleeve; 41. Mounting ear plate; 42. Pipe threaded joint; 43. Grooving; 5. Cable bus; 6. Insulating heat shrink tube; 7. Rubber sealing sleeve; 71. Anti-wear sleeve; 8. Sealing ring. Specific implementation method:

[0018] Example: See Figure 1 , 2 As shown in Figure 3, a waterproof vehicle quick-connect plug comprises a cylindrical insulating plug 1, a connecting column 11 is formed at the rear end of the insulating plug 1, a plurality of annularly distributed electrode pipes 2 are inserted and fixed in the insulating plug 1 near the outer ring of the insulating plug 1, the rear end of the electrode pipe 2 is inserted in the connecting column 11, and a circular pressing groove 12 connected to the electrode pipe 2 is formed on the outer wall of the connecting column 11, a protective shell 3 is inserted on the insulating plug 1, and the protective shell 3 comprises a front protective sleeve 31 which is fixed on the insulating plug 1, and the front protective sleeve 31 can be glued and fixed to the protective shell 3 by glue; a conical transition pipe 32 is formed at the rear end of the front protective sleeve 31, a pipe 33 is formed at the rear end of the transition pipe 32, and a conical interface 36 is formed on the inner wall at the pipe mouth of the pipe 33;

[0019] A cable bus 5 is inserted into the pipe 33 of the protective shell 3, and the branch lines in the cable bus 5 are respectively inserted and crimped and fixed in the electrode pipe 2; an insulating heat shrink tube 6 is fixed on the connecting column 11 and the cable bus 5 inside the protective shell 3;

[0020] A support sleeve 4 is inserted into the cable bus 5 on the rear side of the protective shell 3, and a mounting ear plate 41 is formed on the support sleeve 4. The front end face of the support sleeve 4 abuts against the rear end face of the connecting pipe 33 and is glued and fixed to the connecting pipe 33; a conical pipe threaded joint 42 is formed at the front end of the support sleeve 4, and a plurality of grooves 43 are formed on the pipe threaded joint 42. The grooves 43 divide the pipe threaded joint 42 to form a plurality of arc-shaped holding pieces, and a rubber sealing sleeve 7 is inserted into the support sleeve 4, and the front end of the rubber sealing sleeve 7 is clamped between the cable bus 5 and the pipe threaded joint 42, and the pipe threaded joint 42 is threadedly fixed in the interface 36 of the protective shell 3.

[0021] An insulating retaining ring 13 is formed on the outer wall of the front end of the insulating plug 1, and the insulating retaining ring 13 abuts against the outer wall of the front end of the front protective sleeve 31. When the insulating retaining ring 13 is provided, the insulating protection effect is better when in use.

[0022] On the outer wall of the front side of the front protective sleeve 31, a guiding rib 34 with a "冂"-shaped cross-section is formed. At the rear end of the guiding rib 34, a triangular hook 35 is formed. On the outer wall of the insulating plug 1, a limiting rib is formed. The limiting rib is inserted into the guiding rib 34. At the front end of the limiting rib, a rectangular stopper 14 is formed. The stopper 14 abuts against the front end face of the guiding rib 34. The quick-insert plug is connected by buckling through the hook 35. The guiding rib 34 facilitates the guiding of the hook 35, and the limiting rib can limit the radial rotation of the insulating plug in the protective housing 3.

[0023] The rear end of the connecting column 11 and the front end of the cable bus 5 are located in the transition pipe 32 of the protective housing 3. There are gaps between the inner wall of the protective housing 3 and the outer walls of the connecting column 11 and the cable bus 5. Among them, the protective housing 3 can be made of a material with better heat dissipation effect, such as aluminum alloy material. The cable bus 5 and the electrode connecting pipe 2 are separated from the protective housing 3 through the positioning of their respective components. At the same time, an insulating heat-shrinkable tube 6 is used to achieve insulation and has a waterproof effect; the heat generated at the connection between the cable bus 5 and the electrode connecting pipe 2 can be dissipated through the protective housing 3.

[0024] The taper of the conical cone of the pipe thread joint 42 at the front end of the support seat sleeve 4 is smaller than the taper of the inner interface 36 of the protective housing 3. In this way, when the pipe thread joint 42 is screwed into the protective housing 3, the pressing pieces separated by the cut groove 43 on the pipe thread joint 42 will be deformed to press the cable bus 5.

[0025] On the rear end face of the connecting pipe 33 and the front end face of the support seat sleeve 4, opposite sealing grooves are respectively formed. A sealing ring 8 is inserted into the sealing grooves. The sealing ring 8 is clamped between the connecting pipe 33 and the support seat sleeve 4.

[0026] At the rear end of the rubber sealing sleeve 7, an anti-abrasion sleeve 71 is formed. The anti-abrasion sleeve 71 abuts against the rear end face of the support seat sleeve, which can prevent the cable bus 5 from contacting the support seat sleeve 4 and avoid the abrasion of the outer skin of the cable bus 5 caused by the support seat sleeve 4.

[0027] Working principle: The utility model is a vehicle quick-insert plug with a waterproof function. The vehicle quick-insert plug includes an insulating plug 1, an electrode connecting pipe 2, a protective housing 3, a support seat sleeve 4 and a cable bus 5. The electrode connecting pipe 2 is inserted into the insulating plug 1. The cable bus 5 and the electrode connecting pipe 2 are fixed by crimping. The electrode connecting pipe 2 can be prevented from detaching from the cable bus 5 by crimping deformation, and at the same time, the electrode connecting pipe 2 can be restricted from detaching from the insulating plug 1.

[0028] The insulating plug 1 can be fixedly connected to the protective shell 3 by means of glue or the like, and the installation and connection are also convenient. In order to improve the strength of the connection between the quick-connect plug and the socket on the trailer or the main vehicle, a supporting seat sleeve 4 with a mounting ear plate 41 is provided. The quick-connect plug can be positioned by mounting the ear plate 41 with screws to improve the connection strength. At the same time, a threaded connection is adopted between the supporting seat sleeve 4 and the protective shell 3, which is convenient for connection. Moreover, its connecting structure can clamp the cable bus 5, so that the cable bus 5 and the supporting seat sleeve 4 are fixedly connected together, and at the same time, it has a good sealing effect.

[0029] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A waterproof vehicle quick-connect plug, comprising a cylindrical insulating plug (1), a connecting column (11) formed at the rear end of the insulating plug (1), a plurality of annularly distributed electrode tubes (2) inserted and fixed in the insulating plug (1) near the outer ring of the insulating plug (1), the rear end of the electrode tube (2) inserted in the connecting column (11), a circular pressing groove (12) connected to the electrode tube (2) formed on the outer wall of the connecting column (11), a protective shell (3) inserted on the insulating plug (1), characterized in that: The protective housing (3) includes a front protective sleeve (31) with a socket fixed on the insulating plug (1). A conical transition pipe (32) is formed at the rear end of the front protective sleeve (31). A connecting pipe (33) is formed at the rear end of the transition pipe (32). A conical interface (36) is formed on the inner wall at the orifice of the connecting pipe (33). A cable bus (5) is inserted into the connecting pipe (33) of the protective housing (3). The branch wires in the cable bus (5) are respectively inserted and press-fixed in the electrode connecting pipe (2). An insulating heat-shrinkable tube (6) is inserted and fixed on the connecting column (11) and the cable bus (5) inside the protective housing (3). A support seat sleeve (4) is inserted on the cable bus (5) at the rear side of the protective housing (3). Mounting ear plates (41) are formed on the support seat sleeve (4). The front end face of the support seat sleeve (4) abuts against the rear end face of the connecting pipe (33) and is adhesively fixed to the connecting pipe (33) with glue. A conical pipe thread joint (42) is formed at the front end of the support seat sleeve (4). A number of cutting grooves (43) are formed on the pipe thread joint (42). The cutting grooves (43) divide the pipe thread joint (42) into several arc-shaped pressing pieces. A rubber sealing sleeve (7) is inserted into the support seat sleeve (4). The front end of the rubber sealing sleeve (7) is clamped between the cable bus (5) and the pipe thread joint (42). The pipe thread joint (42) is screwed and fixed in the interface (36) of the protective housing (3).

2. The waterproof vehicle quick-connect plug according to claim 1, characterized in that: An insulating retaining ring (13) is formed on the outer wall at the front end of the insulating plug (1). The insulating retaining ring (13) abuts against the outer wall at the front end of the front protective sleeve (31).

3. The waterproof vehicle quick-connect plug according to claim 2, characterized in that: A guiding rib (34) with a "冂”-shaped cross section is formed on the outer wall at the front side of the front protective sleeve (31). A triangular hook (35) is formed at the rear end of the guiding rib (34). A limiting rib is formed on the outer wall of the insulating plug (1). The limiting rib is inserted into the guiding rib (34). A rectangular block (14) is formed at the front end of the limiting rib. The block (14) abuts against the front end face of the guiding rib (34).

4. The waterproof vehicle quick-connect plug according to claim 1, characterized in that: The rear end of the connecting column (11) and the front end of the cable bus (5) are located in the transition pipe (32) of the protective housing (3). There are gaps between the inner wall of the protective housing (3) and the outer walls of the connecting column (11) and the cable bus (5).

5. The waterproof vehicle quick-connect plug according to claim 1, characterized in that: The taper of the cone of the pipe thread joint (42) at the front end of the support seat sleeve (4) is smaller than the taper of the cone of the interface (36) inside the protective housing (3).

6. The waterproof vehicle quick-connect plug according to claim 5, characterized in that: Opposite sealing grooves are respectively formed on the rear end face of the connecting pipe (33) and the front end face of the support seat sleeve (4). A sealing ring (8) is inserted into the sealing grooves. The sealing ring (8) is clamped between the connecting pipe (33) and the support seat sleeve (4).

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