KR100811914B1 - A three phase terminal for a vehicle - Google Patents

Abstract

An integrated three-phase terminal structure for a vehicle is provided to improve coupling force, reduce a contact resistance, and be fabricated at relatively low costs compared with a connector type structure. A shield terminal contact part(12) as a conductor is provided at an outer circumference of an upper end of a unit housing(11). A terminal rack support(13) as a nonconductor is provided at an inner side of the shield terminal contact part(12). A larger insertion recess(14a) and a smaller insertion recess(14b) as conductors are provided at a rear circumference of an inner side and an inner central portion of the terminal rack support(13). Power terminal contact parts(15a,15b,15c) are provided at both corner portions of an inner side of the larger insertion recess(14a) and at an inner side of the smaller insertion recess(14b). A terminal assembly includes a shield terminal part as a conductor, a larger barrier rib, a smaller barrier rib, and power terminals.

Description

Integrated three-phase terminal structure for a vehicle {a three phase terminal for a vehicle}

1 is a front view of main parts of a conventional three-phase terminal structure;

2 is a perspective view of main parts of another conventional three-phase terminal structure;

3 is a front view of another conventional three-phase terminal structure

4 is a plan view of a terminal block of an embodiment of the present invention;

5 is a plan view of the terminal assembly of the embodiment;

6 is a bottom view of the terminal assembly.

7 shows a front view of the terminal assembly;

8 is a cross-sectional view taken along the line AA ′ of FIG. 5.

9 is a cross-sectional view taken along the line B-B 'of FIG.

10 is a cross-sectional view taken along the line CC 'of FIG.

11 is an assembled state diagram of the shield terminal of the embodiment;

<Explanation of Signs of Major Parts of Drawings>

10 terminal block 11 unit housing

12: shield terminal contact portion 13: terminal block support portion

14a: large fitting groove 14b: small fitting groove

15a, 15b, 15c: power terminal contact 20: terminal assembly

21 cover 22 shield terminal

22a: upper plate 22b: lower plate

23: gasket 24a: large bulkhead

24b: small bulkhead 25a, 25b, 25c: power terminal

30: 3-phase cable

The present invention relates to an integrated three-phase terminal structure for a vehicle, and more particularly, to a triangular arrangement of a power terminal of a terminal assembly and a power terminal contact portion of a terminal block corresponding thereto.

In general, high-voltage system vehicles such as hybrid vehicles, fuel cell vehicles, electric vehicles, and 42V automobiles include a motor for auxiliary power and a motor control unit (MCU) for controlling the motor.

Most of the MCU and the motor are connected by a 3-phase cable, and each connection portion requires a special structure.

The part of the three-phase cable that is connected to the MCU and the motor is generally referred to as a terminal assembly (ASS'Y), and the part to which the terminal is mounted is called a terminal block of the MCU or the motor. The terminal assembly and the terminal block should have the following characteristics: do.

① It should be waterproof.

② The three-phase cable shield should be in good contact with the MCU or motor housing (the contact resistance should be small).

③ It shall not be possible to contact terminals and terminal blocks from outside without disassembly.

④ Three-phase cable should be fixed to the terminal block.

⑤ The assembly of the terminal assembly and the terminal block should be easy.

⑥ Terminal block size should be small.

Meanwhile, the shielded cable may have various forms according to a vehicle and an application, but in terms of functional aspects, a core wire which is a conductor part for transmitting power; Core sheath, which is a coating for insulating core wires; Shield which is a conductor part for noise blocking; Shield coating, which is an insulating coating for protecting the shield; A power terminal which is a conductor part for mechanical connection of the cable and the unit and for transferring power between the cable and the unit; And a shield terminal, which is a conductive part for shielding the shield and the unit to the unit and grounding the shield to the unit. In addition, a structure for improving the sealing / waterproofing of the housing and the grommet is provided.

1 shows a front view of a main portion of a conventional three-phase terminal structure, which uses a clamp-type ground terminal to press a portion of the cable into a separate clamp to compress the shielding portion of the cable, thereby reducing contact force. Although it is an improvement, it has a disadvantage that a large number of parts is added and a process is added to manufacturing a shielded cable, and the work is cumbersome when mounted in a unit.

Moreover, there was a problem that the size of the terminal block was relatively large (for example, 120 × 100), and the assemblability was very poor.

2 is a perspective view of main parts of another conventional three-phase terminal structure.

This conventional three-phase terminal has a problem in that the cable is easily fixed by the connector, and the shield grounding property, the sealing property, and the waterproof property are excellent, but the structure is complicated and the cost is high, similar to the above-described structure.

For reference, FIG. 2 is a view of one phase, and in the case of three phases, a complicated structure is provided.

FIG. 3 shows a front view of another conventional three-phase terminal structure, in which another three-phase terminal is arranged such that a cable is arranged toward the rear of the ISG.

However, when this three-phase terminal is applied to a vehicle, the terminal block, the cable, and the exhaust manifold interfere with each other, and the size of the terminal has a big disadvantage.

The present invention has been made in view of the deficiencies of the prior arts, and the object thereof is to reduce the size of the terminal assembly and the terminal block, as well as to facilitate the assembly of the terminal and the terminal block, and to improve the coupling force and reduce the contact resistance. The present invention is to provide an integrated three-phase terminal structure for a vehicle that can be manufactured and can be manufactured at a relatively low cost compared to a connector type structure.

In order to achieve the above object, the present invention enables to effectively reduce the overall size of the terminal assembly and the terminal block by arranging each of the power terminals in the terminal assembly and each of the power terminal contact portions corresponding to the terminal block to achieve the above object. It is characterized in that it is possible to do, and the following detailed description of the technical details based on the accompanying drawings as follows.

4 is a plan view of a terminal block of one embodiment of the present invention, and a plan view, a bottom view, and a front view of the terminal assembly of the embodiment are shown in FIGS. 5, 6, and 7, and FIGS. 8 and 9 10 is a cross-sectional view taken along a line A-A ', a line B-B', and a line C-C 'of FIG. 5;

In the vehicle-integrated three-phase terminal structure of the present invention, a shield terminal contact portion 12 of a conductor is provided around the upper end circumference of the rectangular unit housing 11, and a terminal block support portion 13 of the non-conductor is provided inside the shield terminal contact portion 12. And a large fitting groove 14a and a small fitting groove 14b of a non-conductor having a vertical portion respectively provided in front of both sides of the horizontal portion at the inner rear outer circumference and the inner center of the terminal block support 13 are provided. A terminal block 10 provided with power terminal contact portions 15a; U, 15b; W, 15c; and V disposed triangularly in the inner corners of the grooves 14a and the small fitting grooves 14b;

Gaskets 23 are provided at the lower rear and both sides of the cover 21, and at the same time, connected to the power terminals 25a; U, 25b; W, 25c; V at the lower front of the cover 21; The shield terminal portion 22 of the conductor supporting the upper cable 30 is provided, and the large fitting groove 14a of the terminal block 10 is located inside the gasket 23 at the bottom of the cover 21 and at the bottom center of the cover 21. A large partition wall 24a and a small partition wall 24b corresponding to the small fitting groove 14b are provided, and the power terminals of the terminal block 10 are disposed at both inner corners of the large partition wall 24a and inside the small partition wall 24b. And a terminal assembly 20 in which the power terminals 25a; U, 25b; W, 25c; V corresponding to the contact portions 15a; U, 15b; W, 15c; V are triangularly arranged. .

In the present invention, the power terminal contact portions 15a; U (15b; W) 15c; V of the terminal block 10 are preferably formed of leaf springs to enhance the contact force, and the shield contact portion 12 of the terminal block 10 is provided. When the scratch pattern is scratched on the surface, it is possible to improve the characteristics when the shield terminal portion 22 contacts the terminal assembly 20.

11 shows a three-phase cable shield ground state diagram of an embodiment of the present invention, in which the illustrated embodiment is a shield in which the three-phase cable 30 is inserted between the upper plate 22a and the lower plate 22b. The terminal portion 22 has a form inserted into the lower end of the cover 21.

Reference numeral 16 in the drawings denotes a bolting hole, and 26 is a fastening bolt.

In the present invention configured as described above, each power terminal contact portion 15a of each power terminal 25a; U, 25b; W, 25c; V and the corresponding terminal block 10 in the terminal assembly 20; U) (15b; W) (15c; V) are each arranged in a triangular, it is possible to significantly reduce the overall size of the terminal assembly 20 and the terminal block 10, and at the same time efficient assembly is possible, each power terminal Since the (25a; U) 25b; W (25c; V) have different shapes, it is possible to prevent misfastening.

In addition, a leaf spring is applied to the power terminal contact portions 15a; U (15b; W) 15c; V of the terminal block 10 so that the contact force of each of the power terminals 25a; U (25b; W) 25c; V is applied. Since the shield terminal portion 22 inserted into the lower end of the cover 21 can be inserted, the three-phase cable 30 can be inserted between the upper plate 22a and the lower plate 22b. Fixation is firm.

As described above, the present invention provides a terminal by arranging each power terminal 25a, 25b, 25c of the terminal assembly 20 and each power terminal contact portion 15a, 15b, 15c of the terminal block 10, respectively. It is possible to significantly reduce the overall size of the assembly 20 and the terminal block 10 and at the same time efficient assembly is possible, according to the present invention, while improving the coupling force and the contact resistance can be reduced relatively compared to the connector structure Since it can be manufactured at low cost, it is possible to greatly improve the functionality, durability, and merchandise of the integrated three-phase terminal for a vehicle, as well as to contribute to cost reduction.

Claims (4)

A shield terminal contact portion 12 of the conductor is provided around the upper outer circumference of the unit housing 11, a terminal block support portion 13 of the non-conductor is provided inside the shield terminal contact portion 12, and an inner rear of the terminal block support 13 is provided. The large fitting grooves 14a and the small fitting grooves 14b of the non-conductor are provided in the outer periphery and the inner center, respectively, in which the vertical portions are provided in front of both sides of the horizontal portion, and both inner corner portions and the small fitting portions of the large fitting grooves 14a are provided. A terminal block 10 provided with power terminal contact portions 15a; U, 15b; W, 15c; V disposed triangularly in the groove 14b; Gaskets 23 are provided at the lower rear and both sides of the cover 21, and at the same time, connected to the power terminals 25a; U, 25b; W, 25c; V at the lower front of the cover 21; The shield terminal portion 22 of the conductor supporting the upper cable 30 is provided, and the large fitting groove 14a of the terminal block 10 is located inside the gasket 23 at the bottom of the cover 21 and at the bottom center of the cover 21. A large partition wall 24a and a small partition wall 24b corresponding to the small fitting groove 14b are provided, and the power terminals of the terminal block 10 are disposed at both inner corners of the large partition wall 24a and inside the small partition wall 24b. And a terminal assembly (20) in which the power terminals (25a; U) (25b; W) (25c; V) corresponding to the contact portions (15a; U) (15b; W) (15c; V) are triangularly arranged. Integrated three-phase terminal structure. 2. The integrated three-phase terminal structure for a vehicle according to claim 1, wherein the power terminal contact portions (15a; U) (15b; W) (15c; V) of the terminal block (10) are constituted by leaf springs. 3. The integrated three-phase vehicle body according to claim 1, wherein the surface of the shield contact portion 12 of the terminal block 10 is combed with scratches to improve the characteristics of the terminal assembly 20 in contact with the shield terminal portion 22. Terminal structure. The vehicle integrated type according to claim 1, wherein a shield terminal portion (22) in which the three-phase cable (30) is inserted between the upper plate (22a) and the lower plate (22b) is inserted into and coupled to the lower end of the cover (21). 3-phase terminal structure.

Images