KR101754421B1 - Terminal Unit of Drive Motor for Vehicle - Google Patents

Abstract

In the terminal unit of the present invention, a plurality of first, second, third, and fourth bus bars (1, 2, 3, 4) assembled in a terminal mold (6) The three spacer assemblies 9-1 and 9-2 and the third spacer assem- bly 9-3 are removed, 3, and 4, and is held and fixed in the radial and axial directions, thereby maintaining sufficient durability against vibration and impact.

Description

[0001] The present invention relates to a terminal unit of a vehicle drive motor,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle drive motor, and more particularly to a terminal unit in which a bus bar can be easily assembled.

2. Description of the Related Art In general, a terminal assembly structure for a Y-winding for each core of a concentrated winding type stator (stator) applied to a drive motor of a vehicle, particularly a hybrid vehicle, has a plurality of bus-bars inserted into a terminal mold.

The above-described terminal assembly structure includes an insert assembly structure in which a plurality of bus bars are simultaneously assembled to an injected terminal mold, and a holder assembly for assembling a plurality of bus bars to a previously formed holder.

In the insert assembly structure, a plurality of bus bars are formed in a predetermined position on a mold and injection-molded. Then, the plurality of bus bars are simultaneously assembled into a mold to form a subassembly, And the sub-assembly is again injected to complete the molding.

However, the above-mentioned insert assembly structure has a problem in that the process of positioning a plurality of bus bars in a die is difficult, resulting in a decrease in productivity and a high defect rate, and in particular, a material having a different thermal expansion number is injected twice, resulting in low heat resistance and impact resistance .

Further, there is an inconvenience that a post-treatment for securing insulation of the bus bar is required.

The holder assembly structure has a structure in which three to four bus bars are assembled in a groove formed in advance, and a relatively easy assembly structure is applied.

However, since the above-mentioned holder assembly structure is also inevitably accompanied by the necessity of assembling three or four bus bars to the respective grooves sequentially or simultaneously at the same position, productivity is lowered, and each of the bus bars is radially supported by the holder Since it is fixed only by the adhesive force of silicon in the axial direction, reliability against large shock and vibration applied in the axial direction is inevitably low.

In addition, the holder assembly structure also requires a post-treatment for ensuring insulation of the bus bar.

Accordingly, it is an object of the present invention, which has been made in view of the above circumstances, to provide a method of manufacturing a terminal mold in which a plurality of bus bars, To improve the insulation performance of the bus bar, and to improve the reliability of the vibration resistance and the impact resistance by the radius and axial support of the bus bar.

In order to accomplish the above object, a terminal unit of a vehicle driving motor according to the present invention comprises: a bus bar assembly comprising a plurality of bus bars each of which is individually manufactured and has an independent insulation structure;

A terminal mold integrally formed with a bus bar inserting portion as a space into which the plurality of bus bars are inserted at intervals and having an extended protruding portion to which the mold cover is coupled,

A spacer assembly that is inserted in the bus bar inserting portion to fill the gap formed by each of the bus bars inserted in the bus bar inserting portion and fixes the bus bars in a radial direction and an axial direction position; And a control unit.

The spacer is composed of a plurality of spacers which form a complete circular shape when connected to each other through a part of a circle.

In the present invention, a plurality of bus bars, which are insulated in a state where the terminal mold is manufactured in advance, are fitted at the same time, and then a spacer is inserted between the plurality of bus bars, thereby assuring easy assembly and improving insulation performance of the bus bars The radius and the axial support of the bus bar greatly improve the reliability against vibration and impact resistance.

In addition, many bus bars are positioned as spacers, reducing the number of management points in the process, simplifying assembly and increasing yield, reducing the number of molds and reducing the cost compared to existing specifications due to the absence of resin (silicon, injection resin) .

FIG. 1 is a configuration diagram of a terminal unit of a vehicle drive motor according to the present invention, FIG. 2 is a terminal configuration diagram in which a bus bar is assembled according to the present invention, and FIG. 3 is a partial sectional view of FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

Fig. 1 shows a configuration diagram of a terminal unit of a vehicle drive motor according to the present invention.

As shown in the figure, the terminal unit includes a bus assembly 5, a terminal mold 6 into which the bus bar 5 is inserted, And a spacer assy 9 for inserting from above the bus bar 5.

The bus bars 5 comprise first, second, third and fourth bus bars 1, 2, 3 and 4, respectively. The first, second, third and fourth bus bars 1, 2, 3, 4) are each individually insulated and circular.

The diameters of the first, second, third and fourth bus bars (1, 2, 3, 4) are set such that the diameter of the first bus bar (1) The diameter of the third bus bar 3 and the diameter of the fourth bus bar 4 increase in the order of the diameter of the first bus bar 2 and the diameter of the fourth bus bar 4, The second bus bar 2 and the first bus bar 1 are sequentially positioned.

The terminal molds 6 are individually manufactured regardless of the bus bars 6 and the first, second, third, and fourth bus bars 1, 2, 3, 4 And a bus bar inserting portion 7 which is a space into which the bus bar insertion portion 7 is inserted.

Further, the terminal mold 6 is provided with a protruding portion extending to one side, and the mold cover 8 is coupled onto the protruding portion.

The spacer is formed of a plurality of spacers 9a to 9n which form a perfect circular shape when connected to each other through a part of a circle. The spacers 9a to 9n ) Are manufactured individually.

The number of the spacer assays 9 is determined according to the number of bus bars constituting the bus bar seats 5. As in the present embodiment, the number of the bus bar seats 5 is four, 4 bus bars 1, 2, 3 and 4, the quantity of the spacer assy 9 is larger than that of the first spacer assy 9-1, the second spacer assy 9-2, 3, and 4, such as an assembly 9-3, respectively. Each of the first, second and third spacer assemblies 9-1, 9-2, and 9-3 is formed of a plurality of spacers 9a, ..., 9n that form a perfect circular shape when connected to each other.

The first spacer assembly 9-1, the second spacer assembly 9-2 and the third spacer assembly 9-3 are connected to the first, second, 3, 4), which means that the first spacer assembly 9-1, the second spacer assembly 9-2 and the third spacer assembly 9-3 Is sandwiched between the first and second bus bars (1, 2), the second and third bus bars (2, 3) and the third and fourth bus bars (3, 4).

As described above, the first spacer insert 9-1, the second spacer insert 9-2 and the third spacer insert 9-2 are inserted between the first, second, The first spacer assy 9-1, the second spacer assy 9-2 and the third spacer assy 9-3 are inserted into the first and second spacer assemblies 9-1, 9-2, 3, and 4 bus bars (1, 2, 3, 4) at the same time.

2 shows a terminal configuration diagram in which a bus bar is assembled according to the present embodiment.

As shown in the figure, the terminal unit of the present embodiment includes a bus bar 5 having an insulating structure, a terminal mold 6 into which the bus bar 5 is inserted, A cover 8 and a plurality of spacers 9a, ..., 9n which form a complete circular shape when connected to each other to form a part of a circle so as to be fitted into the bus bar 5, The spacer assays 9-1, 9-2, and 9-3 are individually fabricated and prepared as a spacer assy 9.

When the bus bar seats 5, the terminal mold 6, the mold cover 8 and the spacer assy 9 are individually prepared as described above, the first and second , And 3 and 4 bus bars (1, 2, 3, and 4) to the bus bar insertion portion 7 of the terminal mold 6 one by one.

That is, the first, second, third, and fourth bus bars 1, 2, 3, and 4 that are individually insulated from each other are inserted into the respective positions of the bus bar insertion portion 7 of the terminal mold 6 To the assembled state.

The fourth bus bar 4 is located at the outermost position of the bus bar insertion portion 7 of the terminal mold 6 and the third bus bar 4 is inserted into the inner space of the fourth bus bar 4, The first bus bar 3, the second bus bar 2 and the first bus bar 1 are sequentially positioned.

In this embodiment, in the work process in which the insulating resin (resin, silicon, etc.) is used for the insulation treatment of the first, second, third and fourth bus bars 1, 2, Is not required, which is due to the fact that each of the first, second, third and fourth bus bars (1, 2, 3, 4) has an individually insulated structure.

Next, by inserting the spacer assy 9 into the first, second, third and fourth bus bars 1, 2, 3 and 4 in the assembled state as described above, (1, 2, 3, 4) can be completed and the position fixing operation can be completed.

In this operation, the first spacer assembly 9-1, the second spacer assembly 9-2, and the third spacer assembly 9-3, which form a complete circular shape, 3, and 4 bus bars 1, 2, 3, and 4, respectively.

That is, in this embodiment, the number of the first spacer assy 9-1 and the number of the second spacer assy 9 (9) are matched with the total number of the first, -2, and the third spacer assy 9-3, one of the three components is sandwiched between the first and second bus bars 1 and 2, One between the second and third bus bars (2, 3) and the last one between the third and fourth bus bars (3, 4).

As described above, the first spacer assembly 9-1, the second spacer assembly 9-2, and the third spacer assembly 9-3 are connected to the first, second, third, and fourth bus bars 1, 2, 3, 4), a jig is used and a plurality of spacers (not shown) constituting each of the first, second and third spacer assemblies 9-1, 9-2, 9-3 9a, ..., 9n are completed, the first spacer assembly 9-1 is formed into a complete circular shape with the plurality of spacers 9a, ..., 9n connected to each other, The second spacer assembly 9-2 is formed in a completely circular shape with a plurality of spacers 9a, ..., 9n, which are other components, connected to each other, and the third spacer assembly 9-3 A plurality of spacers 9a, ..., 9n, which are another component, are formed in a complete circle shape. Then, the mold cover 8 is assembled to the terminal mold 6 to complete the entire assembling process.

3, 4, and 5 are assembled in a state in which the bus bar insertion portions 7 (1, 2, 3, 4) of the terminal mold 6 , Three first spacer assem- bies (9-1) sandwiched between the first, second, third and fourth bus bars (1, 2, 3, 4) and a second spacer assem- bly 2 and the third spacer ass'y 9-3 hold and fix the radial and axial positions of the first, second, third and fourth bus bars 1, 2, 3 and 4, It is possible to maintain sufficient durability against vibration and shock in the axial direction.

1,2,3,4: 1st, 2nd, 3rd and 4th bus bars
5: Bus Bass Say 6: Terminal Mold
7: bus bar insertion part 8: mold cover
9: spacer spacer 9-1, 9-2, 9-3: spacer spacer 1
9a, ..., 9n: spacers

Claims (3)

A bus bar assembly comprising a first, a second, a third and a fourth bus bars, each of which is individually manufactured and has a unique insulation structure;
A terminal mold integrally formed with a bus bar inserting portion as a space into which the plurality of bus bars are inserted at intervals and having an extended protruding portion to which the mold cover is coupled,
First, second, and third spacer assemblies each including a plurality of spacers that are sandwiched between the bus bars inserted in the bus bar inserting portions to fit the spacing formed by each of the bus bars inserted in the bus bar inserting portion and fix the radial and axial positions of the bus bars, ; ≪ / RTI >
Wherein each of the first, second, third, and fourth bus bars is a closed circular shape inserted in a circular space of the bus bar inserting portion, and between the first and second bus bars, A plurality of spacers connected to each other in a state where the plurality of spacers are sandwiched and are positioned in a completely circular shape, and the plurality of spacers constituting the second spacer assembly are interposed between the second and third bus bars, And the plurality of spacers constituting the third spacer assembly are interposed between the third and fourth bus bars,
Wherein the motor-driven motor is a motor-driven motor.
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