JPH08310252A - Structure and method of mounting motor room internal part for electric vehicle - Google Patents

Abstract

PURPOSE: To improve workability by setting a direction of mounting a motor room internal part to one direction from the downward side, further so that mounting can be performed at a stretch. CONSTITUTION: A control unit 11 and motor accessories 12, 13 are fixed to an upper surface of a part mounting frame 8, also to temporarily fix a motor unit 15 to a lower surface, so as to previously constitute a unit assembly 20. The unit assembly 20 is inserted from downward side into a motor room 1, to fixedly fasten the part mounting frame 8 to side members 5, 5 through brackets 29, 30, and after the motor unit 15 is connected to a car body through motor mounts 21, 22, the motor unit 15, by removing its temporary fixing, is elastically supported on the car body. In this way, a mounting direction is set to one direction from the downward side, and further an internal part of the motor room 1 can be mounted thereon at a stretch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure and mounting method for parts in a motor room of an electric vehicle.

[0002]

2. Description of the Related Art In an electric vehicle, a control unit for supplying and distributing a battery voltage to a drive motor and other auxiliary equipment is large, so that the control unit is mounted in a motor room.

Since the control unit is large and has a considerable weight as described above, it is necessary to secure sufficient mounting rigidity when mounting the control unit in the motor room.

Therefore, in the prior art, for example, the actual development of Japanese Utility Model Laid-Open No. 57-139.
As disclosed in Japanese Patent No. 431, 431, a component having a rigid structure extending over a side member of a strength skeleton member arranged in the front-rear direction on the left and right side portions of a motor room above a motor unit including a motor and a transaxle The mounting frame is joined by welding or bolt / nut fastening, etc., and the control unit and the motor auxiliaries such as the air compressor and the power steering pump are fixed on the upper surface of the component mounting frame for collective mounting.

[0005]

Since an axle shaft, a suspension link and the like are connected to the motor unit, the motor unit is mounted on the vehicle body member including the side member from the lower side of the engine room while controlling the motor unit. Since the unit and the motor accessories are mounted on the upper surface of the component mounting frame that is connected between the side members on both sides, the motor unit, the control unit, and the motor accessories must be assembled from the two vertical directions. Not only will jigs and assembling equipment become large-scaled, but also the number of work steps will increase and this will be disadvantageous in terms of cost.

Therefore, according to the present invention, the motor unit, the control unit, and the motor accessories can be assembled all at once from the lower side of the engine room, so that the assembling equipment can be simplified and the number of working steps can be reduced. It is intended to provide a mounting structure and a mounting method for components in a motor room of an electric vehicle capable of performing the above.

[0007]

According to the structure of the invention of claim 1, the control unit and the motor accessories are fixed to the upper surface of the component mounting frame in advance, and the motor unit including the motor and the transaxle is mounted on the lower surface. Temporarily fix it to form a unit assembly, insert the unit assembly into the motor room from the lower side, and fasten and fix the component mounting frame to side members on both sides of the motor room through brackets to fix the motor unit. It is characterized in that it is elastically supported on the vehicle body via a motor mount.

According to a second aspect of the present invention, the center member is connected to the lower side of the motor unit according to the first aspect through the front and rear motor mounts, and the side portion of the motor unit is attached to the side motor mount. Frame mount that supports the side motor mount of the component mounting frame while fastening and fixing the center member to the front and rear cross members of the vehicle body with the component mounting frame fastened and fixed to the side member. It is characterized in that the bracket is fastened and fixed to a vehicle body side mounting bracket fixed to a side member.

According to a third aspect of the present invention, there is provided a vehicle body side bracket having the bracket for supporting the component mounting frame according to the first and second aspects fixed to the upper surface of the side member, and a frame side bracket fixed to the component mounting frame. It is characterized in that the frame side bracket is fastened and fixed to the vehicle body side bracket and the lower surface of the side member.

According to a fourth aspect of the present invention, the control unit and the motor accessories are fixed to the upper surface of the component mounting frame in advance, and the motor unit including the motor and the transaxle is temporarily fixed to the lower surface. The step of inserting the unit assembly into the engine room from below and fastening and fixing the component mounting frame to the side members on both sides of the motor room via the brackets, and the motor unit after fastening the component mounting frame to the side members. It is characterized by a step of connecting to the vehicle body via a motor mount and a step of temporarily removing the component mounting frame and the motor unit after connecting the motor unit to the vehicle body.

[0011]

According to the first aspect of the present invention, the unit assembly is inserted into the motor room from the lower side and the component mounting frame is fastened and fixed to the side member via the bracket, whereby the control unit, the motor accessories and the motor unit. Can be mounted in the motor room from one direction at a time, and furthermore, the work of connecting the motor unit to the vehicle body via the motor mount can be performed while the motor unit is temporarily fixed to the component mounting frame. The number of man-hours for mounting these parts in the motor room can be significantly reduced, and the mounting work can be easily performed using a simple lifter that lifts up the unit assembly.

According to the second aspect, the center member is connected to the lower side of the motor unit in advance through the front and rear motor mounts, and the side portion of the motor unit is mounted in the component mounting frame through the side motor mount. Therefore, when connecting the motor unit to the vehicle body, the center member is fastened and fixed to the front and rear cross members of the vehicle body, and the frame side mount bracket that connects and supports the side motor mount is fixed to the side member. Since it is only fastened and fixed to the side mount member, the work of connecting the motor unit to the vehicle body can be easily performed.

Further, since the side motor mount is supported by the frame side mount bracket and the vehicle body side mount bracket on both sides of the component mounting frame and the side member, it is possible to enhance the support rigidity of the side motor mount. .

According to the third aspect, since the component mounting frame can be connected to and supported by the vehicle body side bracket and the frame side bracket on the upper and lower surfaces of the side member, the supporting rigidity of the unit assembly can be enhanced.

According to the fourth aspect, the unit assembly can be mounted in one direction from the lower side of the motor room to improve the mounting workability, and the motor unit and the component mounting frame are connected after the motor unit is connected to the vehicle body. Since the temporary fixing is removed, the vibration isolation function of the motor mount does not hinder even a little.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 3, reference numeral 1 denotes a motor room surrounded by left and right hood ridge panels 2 and 2, a rear dash panel 3 and a front radiator core support panel 4, and the left and right hood ridge panels 2 are shown. , 2 have side members 5, which are strength frame members in the front-rear direction, on the lower side.
5, the cross member 6 and the sub-frame (cross member) 7, which are the strength frame members in the vehicle width direction, are joined to the lower side portion of the radiator core support panel 4 and the lower side portion of the dash panel 3. And are connected to the side members 5 and 5, respectively.

Reference numeral 8 denotes a component mounting frame, which is composed of a pair of front and rear round pipe members in a vehicle width direction frame 9 and 9 and a pair of left and right front and rear direction frames 10 and 10 joined to the vehicle width direction frames 9 and 9. It consists of and.

The front and rear frames 10, 10 are formed by bending a panel material into a rectangular wave shape, and the control unit 11 is provided on the upper surface of the mountain portion of the front and rear frames 10, 10.
In addition, the motor auxiliary equipment such as the air conditioner compressor 12 and the power steering pump 13 are previously attached to the bolts and nuts 14.
It is fixed.

The control unit 11 is fixed across the left and right front and rear frames 10, 10, and the air conditioner compressor 12 is mounted on one side of the front and rear frames 10.
The power steering pump 13 is fixed to the front-rear frame 10 on the other side.

Reference numeral 15 is a motor 16 and a transaxle 17
And a boss 18 is provided on the upper side of the motor 16 and on the upper side of the transaxle 17, respectively. Directional frame 10, 10
The unit assembly 20 is composed of the control unit 11, the motor auxiliaries 12, 13 and the motor unit 15, which are superposed on the lower surface of the valley part and temporarily fixed by the bolts 19, and fixed in advance to the component mounting frame 8.

Below the motor unit 15, there are pre-known cylindrical vibration-proof bush type front and rear motor mounts 2.
A center member 23 is connected and mounted via 1, 21, and a side portion of the motor unit 15, specifically, an end portion of the transaxle 17 is similarly attached to a side portion motor mount 22 of a cylindrical vibration damping bush type. It is connected to the front-rear direction frame 10 via one side.

The front and rear motor mounts 21 and 21 are connected to a motor side mount bracket 24 projecting from the front and rear side surfaces of the motor 16 and a member side mount bracket 25 provided upright on the center member 23.

The side motor mount 22 is connected to a transaxle side mount bracket 26 protruding from the end of the transaxle 17 and a frame side mount bracket 27 joined to the lower surface of the longitudinal frame 10.

The frame-side mount bracket 27 is arranged so as to project laterally from the front-rear direction frame 10, and is mounted on a vehicle-body-side mount bracket 28 which will be described later with bolts.
The nuts are connected and fixed.

The vehicle body side brackets 30 to be described later are provided at both end portions of the vehicle width direction frames 9 of the component mounting frame 8.
The frame side brackets 29 fastened and fixed to the lower surfaces of the side members 5 and 5 are jointly arranged, while the vehicle body side brackets 30 correspond to the frame side brackets 29 on the upper surfaces of the side members 5 and 5 on both sides. The bolt
The nut 31 is fixed and one side member 5
A vehicle body side mount bracket 28 is fixed to the upper surface of the vehicle body side bracket 30 by a bolt / nut 31 corresponding to the frame side mount bracket 27.

When mounting the unit assembly 20 in the motor room 1, the unit assembly 20 is installed.
Is placed on a lifter (not shown) and the unit assembly 20 is lifted up at a predetermined position below the motor room 1 and inserted into the motor room 1.

When the unit assembly 20 is lifted up, the frame side bracket 29 of the component mounting frame 8 abuts on the vehicle body side bracket 30 fixed to the upper surfaces of the side members 5 and 5, and the frame side bracket 29 is also attached to the side member 5. ., 5, the frame-side bracket 29 and the vehicle-body-side bracket 30 are fastened and fixed by bolts and nuts 32, and the frame-side bracket 29 is attached to the lower surfaces of the side members 5, 5 by bolts and nuts 32. Fasten with.

As a result, the component mounting frame 8 is firmly coupled to the side members 5 and 5, and the motor unit 1
5 can be temporarily mounted on the lower surface of the component mounting frame 8 together with the control unit 11 and the motor accessories 12 and 13 in the motor room 1 from below at once.

The component mounting frame 8 is attached to the side members 5, 5
In the state of being fastened and fixed to, the frame side mount bracket 27 abuts on the vehicle body side mount bracket 28 fixed to the upper surface of the side member 5, and the center member 2
Since 3 abuts on the first cross member 6 and the sub frame 7, the frame side mount bracket 27 and the vehicle body side mount bracket 28 are connected to each other by bolts and nuts 32.
The center member 23 is fastened and fixed to the first cross member 6 and the sub-frame 7 with bolts and nuts 32.

As a result, the motor unit 15 is connected to the vehicle body, so that the boss portion 1 of the motor unit 15 is connected.
8 and the component mounting frame 8 are removed, the temporary fixing of the motor unit 15 is released even if the bolt 19 is removed, so that the load of the motor unit 15 can be applied to the front and rear motor mounts 21 and 21 and the side motor mounts. The motor unit 15 can be properly elastically supported on the vehicle body by giving a load to the vehicle body side via 24.

As described above, according to this embodiment, the control unit 11, the motor auxiliaries 12 and 13, and the motor unit 15 are sub-assembled to the component mounting frame 8, and the motor unit 1 is installed from below. Can be mounted on a motor mount 21 of the motor unit 15,
The connection work to the vehicle body via the motor unit 1
Since 5 can be performed while it is temporarily fixed to the component mounting frame 8, the workability is good, and the workability of mounting the components in the motor room can be greatly improved.

In particular, in the present embodiment, the center member 23 is previously attached to the lower side of the motor unit 15 through the front and rear motor mounts 21 and 21, and the side portion of the motor unit 15 is attached to the side motor mount. The motor unit 1 is connected to the component mounting frame 8 via 22.
When connecting 5 to the vehicle body, the center member 23 is fastened and fixed to the first cross member 6 and the sub-frame 7, and the frame side mount bracket 27 that connects and supports the side motor mount 22 is fixed to the side member 5. Since it is only necessary to fasten and fix it to the mount bracket 28, it is possible to easily connect the motor unit 15 to the vehicle body.

Further, since the side motor mount 22 can be supported on both sides by the frame mounting bracket 27 and the vehicle body side mounting bracket 28 on the component mounting frame 8 and the side member 5, the supporting rigidity of the side motor mount 22 can be improved. Can be increased.

Further, the bracket for connecting the unit assembly 20 to the side members 5, 5 is formed into a bifurcated shape by the vehicle body side bracket 30 and the frame side bracket 29.
Since the load is favorably distributed to the side members 5 and 5 by being connected to the upper and lower surfaces of the side members 5 and 5, the supporting rigidity of the unit assembly 20 can be increased.

[0036]

As described above, according to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, the unit assembly is inserted into the motor room from below and the component mounting frame is fastened and fixed to the side member via the bracket, whereby the control unit, the motor accessories and the motor unit. Can be mounted in the motor room all at once from below, and moreover, the connection work of the motor unit to the vehicle body via the motor mount can be performed while the motor unit is temporarily fixed to the component mounting frame. The workability is good, and the number of man-hours for mounting these motor room parts can be significantly reduced.

Since the unit assembly can be mounted by using, for example, a lifter, the equipment can be simplified, and the workability can be improved, and a large cost reduction can be realized. You can

Further, since the unit assembly can be lifted up into the motor room from the lower side and the work can be simplified by setting the mounting direction to one direction, the mounting work by the robot can be easily automated to enhance the productivity. be able to.

According to the second aspect, the center member is previously connected to the lower side of the motor unit through the front and rear motor mounts, and the side portion of the motor unit is connected to the component mounting frame through the side motor mount. Therefore, when connecting the motor unit to the vehicle body, the center member is fastened and fixed to the front and rear cross members of the vehicle body, and the frame side mount bracket that connects and supports the side motor mount is fixed to the side member. Since it is only necessary to fasten and fix it to the side mount member, it is possible to easily connect the motor unit to the vehicle body.

Further, the side motor mount is supported by the frame side mount bracket and the vehicle body side mount bracket on both sides of the component mounting frame and the side member, so that the supporting rigidity of the side motor mount can be increased. .

According to the third aspect, the component mounting frame can be connected and supported to the upper and lower surfaces of the side member by the vehicle body side bracket and the frame side bracket, so that the supporting rigidity of the unit assembly can be enhanced.

According to the present invention, the unit assembly can be mounted in one direction from the lower side of the motor room to improve the mounting workability, and the motor unit and the component mounting frame can be temporarily mounted after the motor unit is connected to the vehicle body. Since the fixing is removed, the vibration isolation function of the motor mount does not hinder even a little, and the mounting work can be performed properly and quickly.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a side view of the unit assembly.

[Explanation of symbols]

 1 Motor Room 5 Side Member 6, 7 Cross Member 8 Component Mounting Frame 11 Control Unit 12, 13 Motor Auxiliary Equipment 15 Motor Unit 16 Motor 17 Transaxle 20 Unit Assembly 21 Front / Rear Motor Mount 22 Side Motor Mount 23 Center Member 27 frame side mounting bracket 28 vehicle body side mounting bracket 29 frame side bracket 30 vehicle body side bracket

Claims (4)

[Claims] 1. A unit assembly is constructed by previously fixing a control unit and motor accessories on the upper surface of a component mounting frame and temporarily fixing a motor unit consisting of a motor and a transaxle on the lower surface to form a unit assembly. Electricity characterized by being inserted into the inside from below and fastening and fixing the component mounting frame to side members on both sides of the motor room via brackets, and elastically supporting the motor unit to the vehicle body via motor mounts. Parts mounting structure in the motor room of an automobile. 2. A component mounting is performed by previously connecting a center member to the lower side of the motor unit via front and rear motor mounts, and connecting a side portion of the motor unit to a component mounting frame via a side motor mount. The body side mount bracket in which the frame side mount bracket that supports the side motor mount of the component mounting frame is fixed to the side member while the center member is fastened and fixed to the front and rear cross members of the vehicle body while the frame is fastened and fixed to the side member. The component mounting structure in a motor room of an electric vehicle according to claim 1, wherein the component mounting structure is fastened to. 3. A vehicle body side bracket having a bracket for supporting a component mounting frame fixedly mounted on an upper surface of a side member,
3. A motor room for an electric vehicle according to claim 1, wherein the component mounting frame comprises a frame side bracket fixed to the frame, and the frame side bracket is fastened and fixed to the vehicle body side bracket and the lower surface of the side member. Internal parts mounting structure. 4. A unit assembly, in which a control unit and motor auxiliaries are previously fixed to the upper surface of a component mounting frame and a motor unit composed of a motor and a transaxle is temporarily fixed to the lower surface, is provided in the engine room on the lower side. Step of inserting the component mounting frame to the side members on both sides of the motor room via the brackets, and connecting the motor unit to the vehicle body via the motor mount after fastening the component mounting frame to the side members. A method of mounting parts in a motor room of an electric vehicle, comprising: a step of removing the temporary fixing of the parts mounting frame and the motor unit after connecting the motor unit to the vehicle body.