JPH0749834Y2 - Electronic component unit mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a mounting structure for an electronic component unit such as a relay or a control box mounted in an engine room of a vehicle.

[Technical background of the device and its problems]

2. Description of the Related Art Recently, electronic control of vehicle engines and automation of driving operations are progressing, and the number of electronic component units mounted on vehicles is increasing. For example, electronic component units such as a relay and a control unit are mounted in the engine room. Conventionally, the mounting structure of this type of electronic component unit is as shown in FIG.

That is, in A, a weld nut b is provided on a panel a such as a fender shield, and an electronic component unit c is attached to a bolt d.
It is fixed by tightening.

In the panel B, a burring portion e is provided on the panel a, and the electronic component unit c is fastened and fixed by a tapping screw f.

In C, the bracket g is spot-welded to the panel a, and the electronic component unit c is fastened and fixed to the burring portion e of the bracket g by the tapping screw f.

D is a bracket g provided with a weld nut b, and the electronic component unit c is fastened and fixed by a bolt d.

E has a weld bolt h projected horizontally on a bracket g,
An electronic component unit c is fitted to the weld bolt h and is fixed by tightening it with a nut i.

However, the mounting structure of the electronic component unit c as described above causes the electronic component unit to drop when the bolts and nuts loosen due to vibrations and impacts during running of the vehicle and the bolts come off the panel or the nuts come off the bolts. There is a drawback that sometimes.

[Purpose of device]

The present invention was made in view of the above circumstances, and its purpose is to prevent the electronic component unit from falling off even if the nut is loosened due to vibration or shock during traveling of the vehicle, and facilitate the installation work. An object of the present invention is to provide a mounting structure of an electronic component unit that can be realized.

[Outline of device]

In order to achieve the above-mentioned object, this invention fixes an upward weld bolt to an upper surface of a bracket provided on a member to be attached, and provides a mounting plate of an electronic component unit with a mounting hole for fitting the weld bolt, The nut is screwed onto the weld bolt and the electronic component unit is attached to the weld bolt via the attachment plate.

[Example of device]

 An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 is a member to be attached, for example, a vehicle fender shield, and 2 is an engine room. A bracket 3 protruding toward the engine room 2 is attached to the mounted member 1 by spot welding the upper end of the bracket 3 to the mounted member 1. An upper surface 4 of the bracket 3 is inclined, and a weld bolt 5 is provided on the upper surface 4 so as to project upward. On the other hand, 6 is an electronic component unit such as a relay and a control box, and this electronic component unit 6 is fixed to a mounting plate 7. The upper end of the mounting plate 7 is the bracket 3
The mounting plate 7 is bent so as to match the inclined surface of the upper surface 4, and a mounting hole 8 for fitting the weld bolt 5 is formed in the mounting plate 7. 9 is a harness,
The harness 9 is gripped by a harness clip 10 at an intermediate portion thereof. The harness clip 10 is also provided with a mounting hole 11 that fits into the weld bolt 5, so that the weld bolt 5 and the electronic component unit 6 can be mounted together by a nut 12.

Next, the mounting sequence of the electronic component unit 6 will be described. First, a mounting plate 7 in which an electronic component unit 6 is mounted on a weld bolt 5 protruding from the upper surface 4 of the bracket 3.
The mounting hole 8 of is fitted. Next, the mounting hole 11 for the harness clip 10 holding the harness 9 on the weld bolt 5
And the harness clip 10 is superposed on the mounting plate 7. When the nut 12 is screwed into the weld bolt 5 and tightened in this state, the electronic component unit 6 and the harness 9 are
Can be attached to the bracket 3 via the weld bolt 5. In this case, the electronic component unit 6 and the harness 9 are positioned by fitting the mounting holes 8 of the mounting plate 7 and the mounting holes 11 of the harness clip 10 into the weld bolts 5, so that the mounting workability can be improved. .

Further, in the above-mentioned mounted state, the nut 12 may loosen due to vibration or impact while the vehicle is running. Even if the nut 12 loosens, the weld bolt 5 projects upward and the mounting plate 7 is mounted. The hole 8 and the attachment hole 11 of the harness clip 10 are fitted to the weld bolt 5, and the electronic component unit 6 and the harness 9 are also attached.
It is possible to prevent the electronic component unit 6 from falling off due to the weight of the electronic component unit 6. Further, when the nut 12 is loosened, it can be easily dealt with by tightening the nut 12 at the time of periodic inspection of the vehicle.

[Effect of device]

As described above, according to the present invention, since the weld bolt is fixed to the upper surface of the bracket so as to face upward, when a plurality of different parts are attached to the weld bolt, the previously attached part is temporarily fixed. In addition, the number of man-hours required for the assembly line can be divided, and the worker can work while holding different parts in both hands, thus reducing the work load. Further, the weld bolt is fixed upward even if the nut is loosened due to the self-weight or swing of the electronic component unit itself in addition to vibration or shock during traveling of the vehicle, and the mounting hole of the mounting plate is fitted into the bolt. Therefore, there is an effect that the electronic component unit can be prevented from falling off.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electronic component unit in an attached state showing an embodiment of the present invention, FIG. 2 is a vertical sectional front view of the same in an attached state, and FIGS. It is sectional drawing which shows the attachment state of a component unit. 1 ... Attached member, 3 ... Bracket, 4 ... Top surface,
5 ... Weld bolt, 6 ... Electronic component unit, 7 ...
… Mounting plate, 8 …… Mounting hole, 12 …… Nut.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshihiro Nakajima No. 1 Nakashiniri, Hashime-cho, Okazaki-shi, Aichi Inside the Passenger Vehicle Technology Center, Mitsubishi Motors Corporation (56) References )

Claims (1)

[Scope of utility model registration request] 1. A bracket is provided on a member to be attached such as a fender shield, and a weld bolt is fixed to the upper surface of the bracket so as to face upward, and a mounting hole for fitting the weld bolt is formed on a mounting plate of an electronic component unit. A mounting structure for an electronic component unit, wherein a nut is screwed onto the weld bolt to mount the electronic component unit on the weld bolt via a mounting plate.