KR102663573B1 - terminal guide assembly for automobile - Google Patents

Abstract

The present invention relates to a terminal guide assembly for a vehicle to simplify the assembly process between the bus bar and the main body, and is connected to a three-phase lug cable extending from the power converter to electrically connect the vehicle's power converter and the motor. , a plurality of bus bars having one side having a relatively short extension length and the other side having a relatively long extension length, which is bent at a right angle from the one side and extends horizontally to be connected to a ring terminal extending from the motor; and a plurality of insertion holes into which the other side of the bus bar is respectively inserted, a bus bar fitting part through which the insertion hole penetrates based on the insertion direction of the other side of the bus bar, and an integrated part next to the bus bar fitting part. It is formed, extends from the outlet of the insertion hole, and includes a main body portion that partitions the other side of the bus bar from each other and includes a channel portion that guides the insertion of the other side of the bus bar.

Description

Terminal guide assembly for automobile}

The present invention relates to a terminal guide assembly for a vehicle, and more specifically, to a terminal guide assembly for a vehicle that allows easy mounting of a bus bar without a cover for fixing a bus bar that transmits alternating current three-phase power for driving a motor of a vehicle. will be.

Recently, environmentally friendly cars such as hybrid cars, electric cars, and plug-in hybrid cars that combine the advantages of both are being actively developed.

These environmentally friendly vehicles require AC 3-phase voltage to drive the motor. Therefore, a device is needed to convert the DC voltage of the high-voltage battery, which is the power source, into AC three-phase voltage to drive the motor.

Additionally, a device for conversion to the 12V low voltage used in vehicles is also needed. The former one is called an inverter and the latter one is called an LDC (Low DC-DC Converter), and the two together are called a power conversion device.

For example, looking at the configuration of a hybrid vehicle, a hybrid vehicle includes a high-voltage battery, a low-voltage battery, a power conversion device, a motor, a generator, and an engine. In the case of plug-in hybrids, a charger is added. Compared to hybrid vehicles, electric vehicles do not have a generator or engine, but a charger is added.

In eco-friendly vehicles, the power conversion device is the most important part of the driving system, and parts for smoothly supplying power to the power conversion device or motor must not only be manufactured to be durable, but also assembly can be very important.

For example, power supply to a motor is accomplished in the following order: high-voltage battery, power conversion device (e.g., LDC, inverter), and motor, and power is supplied from each component to each component using a high-voltage cable.

According to the prior art, when supplying power from a power conversion device to a motor, a three-phase lug cable or a three-phase high voltage cable is generally used. Here, the lug cable is composed of a cable-like wire of a predetermined length, and lugs that are electrically connected to both ends of the wire and have bolt holes for fastening bolts.

The power applied to the motor flows in the following order: 3-phase lug cable, terminal guide assembly, ring terminal, and coil, and the motor starts to drive. In the case of power generation, it happens in the reverse order.

The terminal guide assembly according to the prior art serves as a connecting passage for current to flow between the three-phase lug cable and the ring terminal. If a three-phase lug cable and a ring terminal are directly connected without a terminal guide assembly, there may be an insulation problem because there is no part to support the three-phase outlet coil.

As shown in FIG. 1, the terminal guide assembly according to the prior art includes a terminal block (2) in which the upper part (upper surface) of the three-phase guide groove (1) is formed with a step like a staircase structure and is open upward. Includes.

Weld nuts (3, 4) are installed in the terminal block (2). One of the weld nuts (3, 4) is installed in one nut seating portion (5) formed on the upper surface of one end of each guide groove (1) of the terminal block (2), and the other is installed in each guide groove (1) It is installed on the other nut seating portion (6) formed on the side of the other end.

The terminal guide assembly according to the prior art has a bus bar 7 in the shape of a metal strip bent to correspond to the step shape of the guide groove 1 so that each guide groove 1 is seated, and a shape structure of the terminal block 2. In consideration of this, it includes a bus bar cover (8) made by separate injection molding. Here, the bus bar 7 serves as a terminal for a kind of electrical connection and may correspond to a lower accessory of the terminal guide assembly.

The bus bar cover 8 of the prior art has an area that can cover the upper surfaces of all bus bars 7 and the middle portion of the terminal block 2 around the guide groove 1. The bus bar cover 8 of this prior art is provided with locking pieces 9 that are respectively assembled on a plurality of locking protrusions provided on the terminal block 2.

The bus bar cover 8 of this prior art is assembled to the terminal block 2, and includes a plurality of bus bars 7 interposed between the bus bar cover 8 and the terminal block 2 for each guide groove 1. It plays a role in fixing and preventing the inflow of foreign substances.

However, since the bus bar cover is manufactured separately in the terminal guide assembly according to the prior art, there is the inconvenience of having to separately assemble the bus bar cover to the terminal block after the assembly process of seating each bus bar in the guide groove. If there is no bus bar cover, the bus bar is not fixed to the guide groove.

In addition, the bus bar cover of the prior art requires the locking pieces of the busbar cover to be individually fastened to the locking protrusions of the terminal block for fixing the bus bar in a compression structure, so assembly is complicated, and some of the locking pieces and protrusions are It has the disadvantage of being prone to assembly defects that may result in non-fastening.

In addition, since the terminal guide assembly of the prior art is a method of assembling the bus bar cover separately to the terminal block, foreign matter is likely to enter between the surface of the bus bar and the inner surface of the bus bar cover during the component assembly process. In other words, assembly between the bus bar and the terminal block can be performed with foreign substances introduced.

In other words, the bus bar cover is installed on the car and used as a means of preventing the inflow of foreign substances during use. However, due to the inflow of foreign substances that may occur during the assembly process, the bus bar cover is not insulated between phases, so the bus bar cover is manufactured separately and then assembled. An ironic situation in which insulation breakdown occurs during the assembly process and post-manufacturing testing process.

In the prior art, a bus bar cover was manufactured separately and assembled on the terminal block to prevent foreign matter, but the assembly work was very complicated and an insulation breakdown problem actually occurred due to the bus bar cover, so a means to solve this problem was needed. Development is urgently required.

The purpose of the present invention was proposed in consideration of the above situation, and the bus bar can be assembled and fixed simply by inserting the bus bar into the insertion hole, so that the bus bar can be simply assembled, and the problem of increased cost during the assembly process is solved. The goal is to provide a terminal guide assembly for vehicles that can prevent assembly errors while eliminating the problem.

The terminal guide assembly for a vehicle according to the present invention for achieving the above object is connected to a three-phase lug cable extending from the power conversion device so as to be electrically connected between the power conversion device of the vehicle and the motor, and is relatively extended. a plurality of bus bars having one side that is short in length and the other side that is bent at a right angle from the one side and extends horizontally to be connected to a ring terminal extending from the motor, and has a relatively long extension length; and a plurality of insertion holes into which the other side of the bus bar is respectively inserted, a bus bar fitting part through which the insertion hole penetrates based on the insertion direction of the other side of the bus bar, and an integrated part next to the bus bar fitting part. It is formed, extends from the outlet of the insertion hole, and includes a main body portion that partitions the other side of the bus bar from each other and includes a channel portion that guides the insertion of the other side of the bus bar.

The channel portion of the main body includes a first guide wall that protrudes relatively more than the upper surface of the bus bar fitting in the vertical direction at positions on both sides of each seating surface on which the other side of the bus bar is placed.

The seating surface of the channel portion of the main body portion includes a reference surface on which the other side of the bus bar is placed; and a stepped surface formed relatively lower than the reference surface to eliminate thickness interference with the ring terminal for connection to the bus bar.

A first weld nut to which a first bolt for electrically connecting the ring terminal and the other side of the bus bar is fastened is installed on the reference surface of the seating surface of the channel portion, and the first weld nut and the An inclined stopper is integrally formed on the reference surface based on the position between the step surfaces, and the inclined stopper has a downward slope based on a direction opposite to the insertion direction of the other side of the bus bar.

The bus bar is formed on the other side of the bus bar that has passed through the insertion hole of the bus bar fitting, and penetrates in the thickness direction of the other side of the bus bar to coincide with the center direction of the first weld nut. first bolt through hole; And it is formed between the first bolt through hole and the end of the other side of the bus bar, penetrates in the thickness direction of the other side of the bus bar to match the position of the inclined locking protrusion, and has a diameter of the first bolt through hole. It includes a locking hole having a relatively smaller diameter.

The bus bar is elastically deformed when the other side of the bus bar passes through the insertion hole of the bus bar fitting and rides over the inclined stopper along the downward slope of the inclined stopper, and is attached to the inclined stopper. When the locking hole on the other side of the bus bar is inserted, the original state is restored from the elastic deformation, and separation from the main body can be prevented by the locking hole and the inclined locking protrusion.

The main body portion includes a chamfer surface formed at the bottom of the inlet of the insertion hole of the bus bar fitting based on a position corresponding to the bent portion formed between one side and the other side of the bus bar, and a bottom of the bus bar fitting portion. It further includes a bolt mounting part integrally formed in the bolt mounting part, and a second weld nut to which a second bolt is fastened to electrically connect the three-phase lug cable and one side of the bus bar is installed, and the second weld nut is installed in the bolt mounting part. 2 The direction of the nut hole of the weld nut is consistent with the second bolt through hole on one side of the bus bar.

The main body further includes a plurality of second guide walls protruding from the outer surface of the bolt mounting portion to partition one side of the bus bar from each other.

The main body portion is formed integrally with outer surfaces of both sides of the channel portion, and further includes an installation protrusion having a hole for assembling a bush for installing the main body portion in an automobile.

The installation protrusion is formed in a cylindrical shape, the upper part of the installation protrusion protrudes more than the upper surface of the first guide wall of the channel part of the main body part, and the bottom of the installation protrusion is spaced apart from the bottom surface of the bolt mounting part of the main body part. It is located higher.

The terminal guide assembly for a vehicle according to the present invention has a bus bar fitting portion and an inclined locking protrusion formed integrally in the main body, so that the catching hole of the bus bar is opened just by inserting the bus bar into the insertion hole of the bus bar fitting portion and then pushing it in. The corresponding part of the bus bar, which is fixed to the inclined stopper and located in the insertion hole, can be protected by being wrapped around the bus bar fitting, and the main body and the bus bar can be assembled with each other simply through the insertion process, making assembly and fixation easy. It has the advantage of being easy to do.

The vehicle terminal guide assembly according to the present invention can eliminate the process of assembling the existing bus bar cover, so the assembly process of the entire vehicle terminal guide assembly can be relatively simplified and the convenience of the assembly process can be improved, There is an advantage in that the number of parts can be reduced, the weight can be reduced by removing the bus bar cover, and the cost can be reduced.

1 is an exploded perspective view of a terminal guide assembly according to the prior art.
Figure 2 is a perspective view of a terminal guide assembly for a vehicle according to an embodiment of the present invention.
Figure 3 is an exploded perspective view of the vehicle terminal guide assembly shown in Figure 2.
Figure 4 is a rear view of the main body shown in Figure 3.
Figure 5 is a cross-sectional view taken along line AA shown in Figure 2;

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is not limited. It is provided to fully inform those who have the scope of the invention, and the invention is defined by the claims.

Meanwhile, the terms used in this specification are for describing embodiments and are not intended to limit the present invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprises” and/or “comprising” refers to the presence of one or more other elements, steps, operations and/or elements in the mentioned elements, steps, operations and/or elements. or addition is not excluded. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

In the drawings, FIG. 2 is a perspective view of a terminal guide assembly for a vehicle according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the terminal guide assembly for a vehicle shown in FIG. 2, and FIG. 4 is a rear view of the main body portion shown in FIG. 3. It is also a degree.

Referring to FIGS. 2 to 4, the vehicle terminal guide assembly according to this embodiment largely includes a plurality of (e.g., three) bus bars 100 and one main body portion 200 in order to transmit three-phase power. Includes.

The vehicle terminal guide assembly including three bus bars 100 and one main body 200 may be electrically connected between a power conversion device (not shown) and a motor (not shown) of the vehicle. In this embodiment, the automobile refers to a vehicle, but it can also be understood as a general name for the product itself that uses or is applied to the terminal guide assembly to be described in this embodiment.

Referring to FIGS. 2 and 3, each bus bar 100 is composed of a bent one side 110 (vertical portion) and the other side 120 (horizontal portion), and has elastic deformation and restoration performance. It is made of metal material.

Here, one side 110 of each bus bar 100 is connected to the three-phase lug cable 10 extending from the power conversion device, and the extension length is formed to be relatively short. In addition, the length of the other side 120 of the bus bar 100 is relatively longer than the one side 110, and because the other side 120 is made of a metal material with elastic deformation and restoration performance, as follows. As will be described, the other side 120 of the bus bar 100 may be restored to its original state after elastic deformation.

In addition, the other side 120 of each bus bar 100 is bent at a right angle from the one side 110 and then extends horizontally to be connected to the ring terminal 20 extending from the motor, and the one side 110 Compared to the other side portion 120, the extension length is formed to be relatively long.

Referring to FIGS. 3 and 4, the main body 200 is made of any one plastic material selected from the group of polymer materials that are highly heat-resistant and have high insulation and mechanical strength (e.g., engineering plastic materials, polyamide-imide (PAI), polyether). It is formed of any one of etherketone (PEEK), polymenzimidazole (PBI), and polyphenylene sulfide (PPS), and is injected to have a shape or structure that can be confirmed in the drawing, so that it has the shape of an integrated body. You can have

As shown in FIG. 4 , the main body 200 includes a plurality of (eg, three) insertion holes 211 into which the other side portion 120 of the bus bar 100 shown in FIG. 3 is respectively inserted.

In addition, the main body portion 200 includes a bus bar fitting portion 210 through which the insertion hole 211 penetrates based on the insertion direction of the other side portion 120 of the bus bar 100.

The role of the bus bar fitting portion 210 and its insertion hole 211 is to guide the assembly of the bus bar 100. The portion of the bus bar 100 inserted into the insertion hole 211 is supported and protected by the bus bar fitting portion 210, thereby providing insulation performance. For this purpose, the bus bar fitting part 210 and the insertion hole 211 are formed integrally with the main body 200. That is, the bus bar fitting part 210 does not need to be manufactured as a separate cover as before. Therefore, it is possible to facilitate the manufacture of the main body 200, prevent the inflow of foreign substances due to separate cover assembly during the manufacturing process, and play a role in simplifying the assembly of the bus bar 100. can do.

In addition, the main body portion 200 includes a channel portion 220 formed integrally next to the bus bar fitting portion 210. The channel portion 220 extends from the outlet 211a of the insertion hole 211 and separates the other side portion 120 of the bus bar 100 from each other. It plays a role in guiding insertion.

The insertion hole 211 extends from the rear inlet 211b of the main body 200 shown in FIG. 4 to the outlet of the insertion hole 211 shown in FIG. 3 along the longitudinal direction of the bus bar fitting portion 210 ( It is connected penetratingly up to 211a). At this time, the insertion hole 211 is closed by the top, both sides, and bottom of the bus bar fitting portion 210, and the outlet 211a and the inlet 211b of the insertion hole 211 are open.

In addition, the hole cross section of the insertion hole 211 is formed to be equal to the thickness cross section of the bus bar 100 excluding the insertion tolerance, making it possible to block the inflow of foreign substances larger than the insertion tolerance.

As can be seen through Figure 3, the channel portion 220 of the main body portion 200 is positioned on both sides of each seating surface 221 on which the other side portion 120 of the bus bar 100 is placed relative to the vertical direction. It includes a first guide wall 224 that protrudes relatively more than the upper surface of the bus bar fitting portion 210. Here, considering that there are a total of three seating surfaces 221, a total of four first guide walls 224 may be formed based on each seating surface 221.

The first guide wall 224 serves to guide the insertion or movement of the other side 120 of the bus bar 100. In addition, since the first guide wall 224 protrudes relatively more than the thickness of the bus bar 100, even if a structure (not shown) existing in the interior installation space of the vehicle contacts the main body 200, the first guide wall 224 It can also serve as a gap maintainer that only contacts the end of the guide wall 224 first and prevents it from contacting the upper surface of the other side 120 of the bus bar 100.

There may be three seating surfaces 221 of the channel portion 220 of the main body portion 200 corresponding to the number of bus bars 100. Each seating surface 221 includes a reference surface 222 on which the other side 120 of the bus bar 100 is placed and which is in close contact with the bottom of the other side 120.

In addition, the seating surface 221 has a thickness that interferes with the ring terminal 20 shown in FIG. 2 for connection to the bus bar 100 (e.g., the circular area surrounding the wire in the ring terminal 20 is relative to the terminal thickness). It may further include a step surface 223 formed relatively lower than the reference surface 222 to eliminate thickness interference caused by the thickness. In particular, the stepped surface 223 can stably support the ring terminal 20 and help the terminal surface of the ring terminal 20 come into close contact with the upper surface of the other side 120 of the bus bar 100. There is an advantage. In addition, since the reference surface 222 of the seating surface 221 and the bottom surface of the insertion hole 211 are at the same level, the insertion direction of the other side 120 of the bus bar 100 is the same as the straight line direction. , As a result, insertion and assembly of the bus bar 100 can be facilitated.

In addition, a first weld nut 230 is installed on the reference surface 220 of the seating surface 221 of the channel portion 220, and an inclined locking protrusion 240 is formed integrally. The inclined stopper 240 serves to secure the bus bar 100 to the main body 200.

The first weld nut 230 is arranged for each reference surface 220 of the channel portion 220 and is installed to be seated in the corresponding nut installation groove formed in the vertical direction.

The first weld nut 230 corresponds to a place where a first bolt (not shown) for electrically connecting the ring terminal 120 shown in FIG. 2 and the other side 120 of the bus bar is fastened.

In addition, the inclined stopping protrusion 240 protrudes in a vertical direction from the reference surface 220, and is positioned at the reference surface 222 based on the position between the first weld nut 230 and the step surface 223. It is formed as one piece.

Figure 5 is a cross-sectional view taken along line A-A shown in Figure 2.

Referring to FIG. 5, the inclined stopping protrusion 240 has a downward slope s based on the direction opposite to the insertion direction of the other side portion 120 of the bus bar 100. At this time, the starting point of the lower slope gradient (s) corresponds to the point where the lower part of the slope of the inclined stopper 240 and the seating surface 221 of the channel part 220 of the main body part 200 meet. In addition, the end point of the lower slope slope (s) corresponds to the point just before the upper part of the inclined surface of the inclined locking protrusion 240 and the upper edge of the locking hole 102 of the bus bar 100 meet, and at this time, at least the slope locking step The upper portion of the inclined surface of the chin 240 may not protrude outward from the locking hole 102. That is, the protruding height of the inclined stopper 240 may be formed to be at least smaller than the thickness of the bus bar 100. Accordingly, the bottom surface of the ring terminal 20 previously described with reference to FIG. 2 can be perfectly physically contacted with the top surface of the other side 120 of the bus bar 100 by assembling bolts.

That is, the inclined stopping protrusion 240 may not act as an obstacle to contact between the ring terminal 20 and the bus bar 100, and as a result, the other side of the ring terminal 20 and the bus bar 100 (120) contact quality can be guaranteed.

Referring to FIG. 3, each bus bar 100 includes a first bolt through hole 101, a catching hole 102, and a second bolt through hole 103.

The first bolt passing hole 101 is formed on the other side 120 of the bus bar 100 that passes through the insertion hole 211 of the bus bar fitting 210, and is located in the center direction of the first weld nut 230. It is penetrated in the thickness direction of the other side 120 of the bus bar 100 so as to coincide with .

The locking hole 102 is formed between the first bolt through hole 101 and the end of the other side 120 of the bus bar 100, and is positioned on the bus bar 100 to match the position of the inclined locking protrusion 240. It penetrates the other side portion 120 in the thickness direction and has a relatively smaller diameter than the diameter of the first bolt through hole 101.

As shown in FIGS. 3 to 5 , the main body 200 further includes a bolt mounting portion 250 integrally formed at the bottom of the bus bar fitting portion 210.

Here, a second bolt (not shown) for electrically connecting the three-phase lug cable 10 (see FIG. 2) and one side 110 of the bus bar 100 is fastened to the bolt mounting portion 250. A weld nut (260) is installed.

The second weld nut 260 is disposed on the rear side of the bolt mounting portion 260 below each of the insertion holes 211, and is installed to be seated in the nut installation groove formed in the horizontal direction.

Accordingly, the direction of the nut hole of the second weld nut 260 is consistent with the second bolt through hole 103 of one side 110 of the bus bar 100. The arrangement direction of the second weld nut 260 may be determined based on a direction that can be opposed to the inner surface of one side 110 of the bus bar 100.

In particular, as shown in FIG. 5, since one side 110 and the other side 120 of the bus bar 100 are manufactured by bending or bending, there is a space between one side 110 and the other side 120. A bent portion 115 having a predetermined curvature is formed by bending processing. Here, the bent portion 115 may act as an assembly-impeding element that prevents the inner surface of one side 110 of the bus bar 100 from coming into close contact with the surface of the main body 200. Therefore, in order to remove this assembly-impairing element, a chamfered surface 211c is formed at the bottom of the inlet 211b of the insertion hole 211 of the bus bar fitting portion 210 based on the position corresponding to the bent portion 115 ( A chamfer surface is formed more. Since the bent portion 115 is accommodated in the space formed by the chamfered surface 211c, the inner surface of one side 110 of the bus bar 100 will be in complete contact with the surface of the main body 200. It is possible to maximize assembly performance while reducing deformation of the bus bar 100.

In addition, the main body 200 further includes a plurality of second guide walls 251 protruding from the outer surface of the bolt mounting portion 250. Here, the second guide wall 251 may be disposed between one side portion 110 of the bus bar 100. Accordingly, the second guide wall 251 plays the role of dividing one side 110 of the bus bar 100 from each other, and has the advantage of preventing the bus bars 100 from conducting electricity to each other.

In addition, the main body 200 is formed integrally with the outer surfaces of both sides of the channel part 220 described above, and has an installation protrusion 270 having a hole for assembling a bush for installing the main body 200 in a car. ) further includes. The installation protrusions 270 are formed integrally on both sides of the main body 200 and consist of a total of two, but this is only the number due to optimal design, and their number and formation position are not limited to those shown in the drawings. It can also be diversified depending on the standards for stably fixing the main body 200.

For example, each installation protrusion 270 is formed in a cylindrical shape, and the upper portion of the installation protrusion 270 protrudes further than the upper surface of the first guide wall 224 of the channel portion 220 of the main body portion 200, The bottom of the installation protrusion 270 is located higher than the bottom of the bolt mounting portion 250 of the main body 200 by the separation height h (see FIG. 4).

Since the installation protrusion 270 is formed in this way, the weight of the main body 200 can be relatively reduced, and the main body 200 is geometrically engaged with the target structure at the location where it is to be installed, so that the main body 200 ( 200) can be installed stably.

Referring to Figures 3 and 5, each bus bar 100 can be easily assembled into the main body 200 by simply inserting it into the insertion hole 211 of the main body 200 and pushing it until fastened. You can.

That is, the other side 120 of the bus bar 100 passes through the insertion hole 211 of the bus bar fitting 210 and follows the downward slope s of the inclined locking ledge 240. 240), it may undergo elastic deformation.

Thereafter, when the locking hole 102 of the other side 120 of the bus bar 100 is inserted into the inclined locking protrusion 240, the other side 120 of the bus bar 100 is returned to its original state from the elastic deformation. is restored to

The bus bar 100 can be prevented from being separated from the main body 200 by the locking hole 102 and the inclined locking protrusion 240.

In this way, the terminal guide assembly for a vehicle of the present invention can assemble the main body and the bus bar by simply inserting the bus bar, thereby facilitating assembly and fixation, and eliminating the process of assembling the existing bus bar cover. Therefore, the assembly process of the entire vehicle terminal guide assembly can be relatively simplified, the convenience of the assembly process can be improved, the number of parts can be reduced, and the cost can be reduced by reducing the weight due to the deletion of the existing bus bar cover. can be saved.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations can be made by those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments expressed in the present invention do not limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas that are equivalent or within the equivalent scope should be construed as being included in the scope of rights of the present invention.

100: bus bar 101: first bolt through hole
102: Holding hole 103: Second bolt passing hole
110: one side 115: bent part
120: Other side 200: Main body
210: bus bar fitting 211: insertion hole
220: Channel portion 230: First weld nut
240: Inclined locking jaw 250: Bolt mounting part
260: Second weld nut 270: Installation protrusion

Claims (10)

It is connected to a three-phase lug cable extending from the power conversion device to be electrically connected between the power conversion device and the motor of the vehicle, has one side with a relatively short extension length, and is bent at a right angle from the one side. a plurality of bus bars extending horizontally to be connected to ring terminals extending from the motor and having the other side portion having a relatively long extension length; and
A plurality of insertion holes into which the other side of the bus bar is respectively inserted, a bus bar fitting part through which the insertion hole penetrates based on the insertion direction of the other side of the bus bar, and an integrated body next to the bus bar fitting part. It is formed, extends from the outlet of the insertion hole, and includes a main body portion that guides the insertion of the other side of the bus bar while dividing the other side of the bus bar from each other,
The channel portion of the main body portion,
It includes a first guide wall that protrudes relatively more than the upper surface of the bus bar fitting in the vertical direction at positions on both sides of each seating surface on which the other side of the bus bar is placed,
The seating surface of the channel portion of the main body portion is,
a reference surface on which the other side of the bus bar is placed; and
Consisting of a stepped surface formed relatively lower than the reference surface to eliminate thickness interference with the ring terminal for connection to the bus bar.
In-vehicle terminal guide assembly.
delete delete According to claim 1,
On the reference surface of the seating surface of the channel portion,
A first weld nut to which a first bolt is fastened to electrically connect the ring terminal and the other side of the bus bar is installed,
An inclined locking protrusion is integrally formed on the reference surface based on the position between the first weld nut and the step surface,
The inclined stopping protrusion has a downward slope based on the direction opposite to the insertion direction of the other side of the bus bar.
In-vehicle terminal guide assembly.
According to claim 4,
The bus bar is,
A first bolt through hole is formed on the other side of the bus bar that passes through the insertion hole of the bus bar fitting, and penetrates in the thickness direction of the other side of the bus bar to coincide with the center direction of the first weld nut. ; and
It is formed between the first bolt through hole and the end of the other side of the bus bar, penetrates in the thickness direction of the other side of the bus bar to match the position of the inclined stopper, and has a diameter greater than the diameter of the first bolt through hole. Containing a holding hole having a relatively small diameter;
In-vehicle terminal guide assembly.
According to claim 5,
The bus bar is,
The other side of the bus bar is elastically deformed when it passes through the insertion hole of the bus bar fitting and rides over the inclined stopper along the lower slope of the inclined stopper, and the other side of the bus bar is attached to the inclined stopper. When the locking hole is inserted, the original state is restored from the elastic deformation, and separation from the main body is prevented by the locking hole and the inclined locking protrusion.
In-vehicle terminal guide assembly.
According to claim 1,
The main body part,
A chamfer surface formed at the bottom of the entrance of the insertion hole of the bus bar fitting based on the position corresponding to the bent portion formed between one side and the other side of the bus bar, and a chamfer surface formed integrally with the bottom of the bus bar fitting. Further comprising a bolt mounting portion,
In the bolt mounting part,
A second weld nut to which a second bolt is fastened to electrically connect the three-phase lug cable and one side of the bus bar is installed,
The direction of the nut hole of the second weld nut is consistent with the second bolt through hole on one side of the bus bar.
In-vehicle terminal guide assembly.
According to claim 7,
The main body part,
Further comprising a plurality of second guide walls protruding from the outer surface of the bolt mounting portion to partition one side of the bus bar from each other.
In-vehicle terminal guide assembly.
According to claim 8,
The main body part,
It is integrally formed on both outer surfaces of the channel portion and further includes an installation protrusion having a hole for assembling a bush for installing the main body portion in a vehicle.
In-vehicle terminal guide assembly.
According to clause 9,
The installation protrusion is formed in a cylindrical shape,
The upper part of the installation protrusion protrudes more than the upper surface of the first guide wall of the channel part of the main body part,
The bottom of the installation protrusion is better positioned by the height of the separation from the bottom of the bolt mounting portion of the main body.
In-vehicle terminal guide assembly.