CN209896330U - Push-pull type high-voltage electric connector for electric automobile - Google Patents

Abstract

The utility model discloses a plug-type electric automobile high voltage electric connector has solved current high voltage electric connector structure complicacy, and insulating properties is not good, the higher problem of manufacturing cost. The utility model discloses a high-voltage electric connector includes casing, return bend, connecting nut, spring, insulator subassembly, crimping terminal, first insulation cover, the insulating cover of second, cap screw, compresses tightly pad, end cover. The utility model discloses production efficiency is high and practice thrift the cost, and the jump ring is direct and casing cooperation fixed connection nut and spring, has reduced part quantity, has shortened the mounting dimension to part cost has been reduced, and good insulating properties has.

Description

Push-pull type high-voltage electric connector for electric automobile

Technical Field

The utility model relates to a high voltage connector technical field provides a plug-type electric automobile high voltage electric connector very much.

Background

At present, in the field of high-voltage electric connectors of electric automobiles, different requirements are met for a large-current connector butt joint mode, and a push-pull type structure is taken as a common structure and needs to be strictly controlled in terms of installation size and production cost. The clamp spring of the existing push-pull type structure is installed in a rear position and needs to be installed in a matching way with the pressure ring, the installation size is longer, the outer diameter of the shell is larger, and the production cost is higher; in addition, the insulation requirement for the bent high-current electric connector is high, particularly the tail part switching part has a complex structure, and insulation measures need to be strictly controlled. The tail insulation protection of the existing bent electric connector cannot realize all-dimensional insulation covering, and the tail crimping terminal is fixed by usually adopting a locking mode of a flat washer and a spring washer, so that certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a simple structure, insulating properties is good, uses the plug-type electric automobile high voltage electric connector that part quantity is less, low in production cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a push-pull type high-voltage electric connector for an electric automobile comprises a shell, a bent pipe, a connecting nut, a spring, an insulator assembly, a crimping terminal, a first insulating sleeve, a second insulating sleeve, a cylindrical head screw, a pressing pad and an end cover; the shell is arranged on the outer periphery of the front end of the bent pipe, the connecting nut is arranged on the outer periphery of the front end of the shell, a convex key is arranged on the inner periphery of the connecting nut, a key position groove is formed in the outer periphery of the shell, the convex key is arranged in the key position groove and can move axially in the key position groove, the spring is sleeved on the outer periphery of the shell and is arranged in a cavity formed between a first annular boss on the inner periphery of the connecting nut and a second annular boss on the outer periphery of the shell in a compressed state, a clamp spring groove is formed in the outer periphery of the shell at the front end of the key position groove, a first clamp spring is arranged in the clamp spring groove, the connecting nut compresses the spring, and reciprocating motion along the;

an insulator assembly is axially installed in a cavity in the shell, the insulator assembly comprises a hole front insulator, a hole rear insulator and a jack, the hole front insulator and the hole rear insulator are sequentially installed in the shell, the hole rear insulator is fixed on the inner periphery of the shell through a second snap spring, the jack is axially installed in the hole front insulator and the hole rear insulator in a penetrating mode, a crimping terminal is arranged in a cavity at the lower end of the bent pipe and is in contact with the tail end of the jack in the vertical direction, the jack is fixed with the top end of the crimping terminal through a cylindrical head screw at the tail end of the jack, a second insulating sleeve is sleeved outside the lower end of the crimping terminal from the lower end of the bent pipe, a first insulating sleeve is installed above the second insulating sleeve and is axially arranged in a cavity at the upper end of the bent pipe, a compression pad is installed at the tail end of the cylindrical head screw, the end cover is arranged at the tail end of the elbow in a threaded connection mode, and the pressing pad is tightly pressed;

the front end of the elbow is respectively provided with a first annular groove and a second annular groove, the inner periphery of the tail end of the shell is provided with a third annular groove corresponding to the first annular groove in position, third snap springs are arranged in the first annular groove and the third annular groove to realize axial positioning and free rotation between the elbow and the shell, a first O-shaped sealing ring is arranged in the second annular groove to ensure sealing performance between the elbow and the shell, the tail end of the shell is provided with a screw hole, a stop screw is arranged in the screw hole and is positioned between the third snap spring and the first O-shaped sealing ring, when the stop screw is not locked, the shell and the elbow can rotate freely, and directional installation can be realized by locking the stop screw in the selected installation direction.

Further, the connecting pipe is installed to return bend bottom periphery, installs water joint at the connecting pipe lower extreme to install second O type sealing washer between connecting pipe and return bend bottom, guarantee the sealing performance between return bend and the connecting pipe.

Furthermore, the key position groove is of a U-shaped structure, the clamp spring groove is annular, and the radial depth of the key position groove is equal to that of the clamp spring groove.

Further, the spring is made of stainless steel wires.

Furthermore, the tail end of the jack is provided with a threaded hole for mounting a cylindrical head screw.

Furthermore, the periphery of one end of the insulator is provided with a conical cylindrical table which can be inserted to the front end of the first insulating sleeve.

Furthermore, the first insulating sleeve is of a hollow cylinder structure, an annular groove is formed in the inner periphery of one end of the hollow cylinder and used for accommodating a conical cylindrical table of the insulator, and an opening penetrating through the hollow cylinder is axially formed in the lower end of the hollow cylinder; the second insulating sleeve is vertically installed with the first insulating sleeve, the second insulating sleeve is a hollow cylinder, U-shaped openings are respectively arranged at corresponding positions on the top cylindrical surface of the hollow cylinder, and protruding parts among the 2U-shaped openings are arranged in the openings at the lower end of the first insulating sleeve.

Furthermore, a round blind hole is formed in the front end of the pressing pad, and the head of the cylindrical head screw is axially arranged in the round blind hole; the pressure pad is made for the silicon rubber material, withstands the cap screw, prevents the pine of cap screw when guaranteeing insulating properties for the crimping terminal is more reliable with the jack contact.

Further, the first O-shaped sealing ring and the second O-shaped sealing ring are made of silicon rubber.

Furthermore, the first clamp spring, the second clamp spring and the third clamp spring are all made of stainless steel flat wires, and have enough elasticity to ensure the installation reliability of the structure.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses the casing directly passes through the jump ring with the return bend and is connected, has reduced part quantity, has shortened mounting dimension. The mounting direction is controlled and locked by a stop screw, and the operation is simple and easy to adjust. After the internal insulator, the first insulating sleeve and the second insulating sleeve are assembled, the charged working part can be completely wrapped, and the compression pad is used for supporting the cylindrical head screw to play a role in preventing loosening, so that the functionality and the safety of the electric connector are more reliable; in addition, adopt the plug-type structural connection of jump ring rear-mounted between coupling nut and the casing, compare with current rearmounted plug-type structure, the utility model discloses a casing external diameter is less, and production efficiency is high and practice thrift the cost, and the jump ring is direct to cooperate fixed connection nut and spring with the casing, has reduced part quantity, has shortened installation dimension to the part cost has been reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the housing;

FIG. 3 is a schematic perspective view of the housing;

FIG. 4 is a schematic view of the coupling nut;

FIG. 5 is a schematic view of the structure of the jack;

FIG. 6 is a schematic view of the structure of the insulator after the hole;

FIG. 7 is a schematic view of a first insulating sleeve;

FIG. 8 is a right side view of FIG. 7;

FIG. 9 is a schematic view of the construction of a second insulating sleeve;

FIG. 10 is a schematic view of the mounting structure of the first insulating sleeve and the second insulating sleeve;

FIG. 11 is a schematic view of the construction of the tamp pad;

FIG. 12 is a schematic view of a bent pipe;

FIG. 13 is a schematic view of the stop screw;

in the figure: 1-a shell; 1-1-bond groove; 1-2-a second annular boss; 1-3-jump ring groove; 1-4-screw holes; 1-5-a third annular groove; 2-bending the pipe; 2-1-a first annular groove; 2-2-a second annular groove; 3-connecting a nut; 3-1-lug; 3-2-a first annular boss; 4-a spring; 5-an insulator assembly; 5-1-via front insulator; 5-2-hole rear insulator; 5-3-plug hole; 6-crimp terminal; 7-a first insulating sleeve; 7-1-fourth annular groove; 8-a second insulating sleeve; 9-cylindrical head screw; 10-a compression pad; 11-end cap; 12-a first snap spring; 14-a second clamp spring; 15-a third clamp spring; 16-a first O-ring seal; 17-a stop screw; 18-a connecting tube; 19-a waterproof joint; 20-second O-ring seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a push-pull type high-voltage electric connector for an electric vehicle comprises a shell 1, a bent pipe 2, a connecting nut 3, a spring 4, an insulator assembly 5, a crimping terminal 6, a first insulating sleeve 7, a second insulating sleeve 8, a cylindrical head screw 9, a compression pad 10 and an end cover 11; a shell 1 is arranged on the outer periphery of the front end of the elbow 2, a connecting nut 3 is arranged on the outer periphery of the front end of the shell 1, a convex key 3-1 is arranged on the inner periphery of the connecting nut 3, a key slot 1-1 is arranged on the outer periphery of the shell 1, the convex key 3-1 is arranged in the key slot 1-1 and can axially move in the key slot 1-1, the spring 4 is sleeved on the outer periphery of the shell 1, and is placed in a compressed state in a cavity formed between a first annular boss 3-2 at the inner periphery of the coupling nut 3 and a second annular boss 1-2 at the outer periphery of the housing, a clamp spring groove 1-3 is formed in the periphery of the shell at the front end of the key position groove 1-1, a first clamp spring 12 is installed in the clamp spring groove 1-3, the connecting nut 3 compresses the spring 4, and the reciprocating motion in the axial direction at the periphery of the shell 1 is realized through the reciprocating motion of the spring 4;

referring to fig. 5 to 11, an insulator assembly 5 is axially installed in a cavity inside a housing 1, the insulator assembly includes a pre-hole insulator 5-1, a post-hole insulator 5-2, and a plug hole 5-3, the pre-hole insulator 5-1 and the post-hole insulator 5-2 are sequentially installed inside the housing 1, the post-hole insulator 5-2 is fixed on the inner circumference of the housing 1 by a second snap spring 14, the plug hole 5-3 is axially installed in the pre-hole insulator 5-1 and the post-hole insulator 5-2, a crimp terminal 6 is placed in a cavity at the lower end of a bent tube 2 and is in vertical contact with the tail end of the plug hole 5-3, the plug hole 5-3 is fixed with the top end of the crimp terminal 6 by a cylindrical head screw 9 at the tail end of the plug hole 5-3, and a second insulator 8 is sleeved outside the lower end of the crimp terminal, the first insulating sleeve 7 is arranged above the second insulating sleeve 8 and is axially arranged in a hole cavity at the upper end of the bent pipe 2, a pressing pad 10 is arranged at the tail end of the cylindrical head screw 9, the pressing pad 10 is arranged in a space formed by the first insulating sleeve 7 and the second insulating sleeve 8, and the end cover 11 is arranged at the tail end of the bent pipe 2 in a threaded connection mode to tightly push the pressing pad 10;

referring to fig. 12 to 13, a first annular groove 2-1 and a second annular groove 2-2 are respectively formed at the front end of the bent pipe 2, a third annular groove 1-5 corresponding to the first annular groove 2-1 is arranged on the inner circumference of the tail end of the shell 1, a third clamp spring 15 is arranged in the first annular groove and the third annular groove, so that the axial positioning between the elbow and the shell is realized, the elbow can rotate freely, a first O-shaped sealing ring 16 is arranged in the second annular groove 2-2 to ensure the sealing performance between the elbow pipe 2 and the shell 1, screw holes 1-4 are arranged at the tail end of the shell 1, a stop screw 17 is arranged in the screw holes, the stop screw 17 is positioned between the third clamp spring 15 and the first O-shaped sealing ring 16, when the stop screw 17 is not locked, the shell 1 and the elbow pipe 2 can rotate freely, and directional installation can be realized by locking the stop screw 17 after the installation direction is selected.

The periphery of the bottom end of the elbow pipe 2 is provided with a connecting pipe 18, the lower end of the connecting pipe 18 is provided with a waterproof joint 19, and a second O-shaped sealing ring 20 is arranged between the connecting pipe 18 and the bottom end of the elbow pipe 2, so that the sealing performance between the elbow pipe 2 and the connecting pipe 18 is ensured.

The key position groove 1-1 is of a U-shaped structure, the clamp spring groove 1-3 is annular, and the radial depth of the key position groove 1-1 is equal to that of the clamp spring groove 1-3.

The spring 4 is made of stainless steel wire.

And the tail end of the jack 5-3 is provided with a threaded hole for mounting a cylindrical head screw 9.

The periphery of the tail end of the insulator 5-2 is provided with a conical cylindrical table 5-2-1 which can be inserted to the front end of the first insulating sleeve 7.

The first insulating sleeve 7 is of a hollow cylinder structure, a fourth annular groove 7-1 is formed in the inner periphery of one end of the hollow cylinder and used for accommodating a conical cylindrical table of the rear insulator 5-2, and an opening 7-2 penetrating through the hollow cylinder is axially formed in the lower end of the hollow cylinder; the second insulating sleeve 8 is vertically arranged with the first insulating sleeve 7, the second insulating sleeve 8 is a hollow cylinder, U-shaped openings 8-1 are respectively arranged at corresponding positions on the top cylindrical surface of the hollow cylinder, and the protruding parts between 2U-shaped openings 8-1 are arranged in the opening 7-2 at the lower end of the first insulating sleeve 7.

The front end of the pressing pad 10 is provided with a round blind hole 10-1, and the head of a cylindrical head screw 9 is axially arranged in the round blind hole 10-1; the pressing pad 10 is made of silicon rubber and props against the cylindrical head screw 9, so that the cylindrical head screw 9 is prevented from loosening while the insulating performance is guaranteed, and the pressing terminal 6 is more reliably contacted with the jack 5-3.

The first O-shaped sealing ring 16 and the second O-shaped sealing ring 20 are made of silicon rubber.

The first clamp spring 12, the second clamp spring 14 and the third clamp spring 15 are all made of stainless steel flat wires, and have enough elasticity to ensure the installation reliability of the structure.

The utility model adopts a push-pull connection structure between the connection nut and the shell, when in use, the spring is assembled on the periphery of the shell, then the connection nut is axially installed on the shell, the clamp spring is assembled in the clamp spring groove of the shell by using a special tool, the spring is in a compressed state, and has enough elasticity to ensure the service performance of the push-pull structure;

the second annular groove 2-2 at the front end of the elbow pipe 2 is designed according to the specification of the first O-shaped sealing ring 16, and the first O-shaped sealing ring 16 is ensured to have enough compression after being matched with the shell 1, so that the waterproof requirement is met. When the O-shaped sealing ring is used, the first O-shaped sealing ring 16 is sleeved in the second annular groove 2-2 of the elbow pipe 2, the third clamp spring 15 is compressed in the first annular groove 2-1 at the rear end of the elbow pipe by a special tool, after the O-shaped sealing ring is matched with the shell 1 for installation, the outer diameter of the third clamp spring 15 after being popped out is tightly attached to the inner diameter of the third annular groove 1-5 of the shell, so that the shell 1 and the elbow pipe 2 are positioned and installed, the stop screw 17 is screwed into the screw hole 1-4 of the shell, the stop screw can be screwed after the installation direction is selected, and the shell 1 and the elbow pipe 2 are in a directional locking state. And the butt joint ends of the shell and the bent pipe are planes, the machining mode is machining, the production efficiency is high, and the process is simple.

The utility model discloses an insulating cover of first insulation cover 7 and second 8, insulator subassembly 5 can wrap up electrified work position completely after the aggregate erection, and compress tightly pad 10 with 11 fore-set of end cover to withstand cylindric head screw 9 and play and prevent the pine effect that takes off, make crimping terminal 6 more reliable with jack 5-3 contact, make electric connector's functionality and security all more reliable.

The process and the implementation of the present invention are explained by using specific examples, and the above description of the examples is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (9)

1. A push-pull type high-voltage electric connector of an electric automobile is characterized by comprising a shell, a bent pipe, a connecting nut, a spring, an insulator component, a crimping terminal, a first insulating sleeve, a second insulating sleeve, a cylindrical head screw, a pressing pad and an end cover; the shell is arranged on the outer periphery of the front end of the bent pipe, the connecting nut is arranged on the outer periphery of the front end of the shell, a convex key is arranged on the inner periphery of the connecting nut, a key position groove is formed in the outer periphery of the shell, the convex key is arranged in the key position groove and can move axially in the key position groove, the spring is sleeved on the outer periphery of the shell and is arranged in a cavity formed between a first annular boss on the inner periphery of the connecting nut and a second annular boss on the outer periphery of the shell in a compressed state, a clamp spring groove is formed in the outer periphery of the shell at the front end of the key position groove, a first clamp spring is arranged in the clamp spring groove, the connecting nut compresses the spring, and reciprocating motion along the;

an insulator assembly is axially installed in a cavity in the shell, the insulator assembly comprises a hole front insulator, a hole rear insulator and a jack, the hole front insulator and the hole rear insulator are sequentially installed in the shell, the hole rear insulator is fixed on the inner periphery of the shell through a second snap spring, the jack is axially installed in the hole front insulator and the hole rear insulator in a penetrating mode, a crimping terminal is arranged in a cavity at the lower end of the bent pipe and is in contact with the tail end of the jack in the vertical direction, the jack is fixed with the top end of the crimping terminal through a cylindrical head screw at the tail end of the jack, a second insulating sleeve is sleeved outside the lower end of the crimping terminal from the lower end of the bent pipe, a first insulating sleeve is installed above the second insulating sleeve and is axially arranged in a cavity at the upper end of the bent pipe, a compression pad is installed at the tail end of the cylindrical head screw, the end cover is arranged at the tail end of the elbow in a threaded connection mode, and the pressing pad is tightly pressed;

the front end of the elbow is respectively provided with a first annular groove and a second annular groove, the inner periphery of the tail end of the shell is provided with a third annular groove corresponding to the first annular groove in position, third snap springs are arranged in the first annular groove and the third annular groove to realize axial positioning and free rotation between the elbow and the shell, a first O-shaped sealing ring is arranged in the second annular groove to ensure sealing performance between the elbow and the shell, the tail end of the shell is provided with a screw hole, a stop screw is arranged in the screw hole and is positioned between the third snap spring and the first O-shaped sealing ring, when the stop screw is not locked, the shell and the elbow can rotate freely, and directional installation can be realized by locking the stop screw in the selected installation direction.

2. A push-pull type high voltage electric connector for an electric vehicle as claimed in claim 1, wherein a connection pipe is installed at an outer circumference of a bottom end of the elbow, a waterproof joint is installed at a lower end of the connection pipe, and a second O-ring is installed between the connection pipe and the bottom end of the elbow to ensure sealing performance between the elbow and the connection pipe.

3. A push-pull electric vehicle high voltage electrical connector as in claim 1 wherein the key slot is U-shaped, the jump ring slot is annular, and the radial depth of the key slot is equal to the radial depth of the jump ring slot.

4. A push-pull electric vehicle high voltage electrical connector as in claim 1 wherein the spring is made of stainless steel wire.

5. A push-pull electric vehicle high voltage electrical connector as claimed in claim 1 wherein the rear end of the receptacle is provided with a threaded hole for installation of a cap screw.

6. A push-pull electric vehicle high voltage electrical connector as claimed in claim 1 wherein the insulator has a tapered cylindrical boss on an end periphery thereof for insertion into a front end of the first insulator sleeve.

7. A push-pull type high voltage electric connector for electric vehicles as claimed in claim 1, wherein the first insulating sleeve is a hollow cylinder structure, one end of the hollow cylinder is provided with an annular groove on the inner circumference for accommodating the conical cylindrical table of the insulator, and the lower end of the hollow cylinder is provided with an opening axially penetrating through the hollow cylinder; the second insulating sleeve is vertically installed with the first insulating sleeve, the second insulating sleeve is a hollow cylinder, U-shaped openings are respectively arranged at corresponding positions on the top cylindrical surface of the hollow cylinder, and protruding parts among the 2U-shaped openings are arranged in the openings at the lower end of the first insulating sleeve.

8. The push-pull electric vehicle high-voltage electric connector as claimed in claim 1, wherein the front end of the compression pad is provided with a round blind hole, and the head of the cylinder head screw is axially arranged in the round blind hole; the pressure pad is made for the silicon rubber material, withstands the cap screw, prevents the pine of cap screw when guaranteeing insulating properties for the crimping terminal is more reliable with the jack contact.

9. A push-pull electric vehicle high voltage electrical connector as claimed in claim 1 wherein the first, second and third springs are made of stainless steel flat wire with sufficient elasticity to ensure structural reliability.

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