JPS62135217A - Method of fixing power line of vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a method for fixing power lines in a vehicle.

(Prior Art) Generally, in a vehicle, a wide variety of electrical appliances, /)! 9 is used, and when fixing the end of the power line to a predetermined attachment part, an engaging part provided at the end of the power line is used, as disclosed in, for example, Japanese Patent Laid-Open No. 11831/1983. is inserted into the screw, and the screw is tightened into a screw hole provided in the attachment part to fix the power line end.

(Problem to be Solved by the Invention) By the way, in the case of such a power line fixing method, it is necessary to tighten the screws to a specified torque or higher; Since the determination as to whether the torque is higher than the torque depends solely on the feeling of the operator, there may be cases where the tightening is insufficient (-b). If this tightening is insufficient, the connection resistance at the end of the power line increases, resulting in a large power loss, and there is a problem in that the tightening of the screws gradually loosens due to vehicle body photography and the power line comes off from the attachment part.

The present invention has been made in view of the above-mentioned problems, and its purpose is to use a bolt having a neck that breaks at a specified tightening torque or more in place of the above-mentioned screw, and to use this bolt to secure the end of the power line. The mounting part must always be tightened to a specified torque or higher to ensure secure fixation.

(Means for Solving the Problems) In order to achieve the above object, the solving means of the present invention provides a method for fixing a power line in a vehicle by tightening the engaging portion provided at the end of the power line by a specified tightening torque or more. The end of the power line is fixed by inserting the power line into a bolt that has a neck that breaks at a certain angle, and tightening the bolt against the mounting part until the neck breaks.

(Function) With the above configuration, in the present invention, when tightening the bolt to fix the end of the power line, the bolt is tightened until the neck of the bolt breaks, so that the bolt is always tightened to a specified torque or higher, and the power line This means that the fixation can be performed reliably.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment of the present invention in which the end of a power line 1.1 is fixed to a fuse box 2. ).

At the top of the fuse box 2, there are a plurality of fuses 3, 3. ... are installed in a row horizontally, and a fuse cover (not shown) is attached to the device to cover the fuses 3, 3, ....

Further, in the center of both sides of the fuse box 2 in the lateral direction, there are mounting seats 4 to which the ends of the power lines 1 are connected and fixed.
is formed, and a cover member 5 that covers the mounting seat portion 4 from the side is provided so as to be openable and closable. The mounting seat 4 is provided with two screw holes 6.7, upper and lower.
The upper screw hole 6 has fuses 3, 3 . Among them, a bolt 8 for fixing the main fuse 3a with the largest capacity located in the center to the fuse box 2 is threadedly inserted, and the end of the power line 1 is attached to the lower screw hole 7. 9 is screwed and inserted into the port 1 for fixing on the seat portion 4. On the other hand, the end of the power #5A1 is provided with an engaging portion 10 into which a fixing pin 9 (threaded portion 11 to be described later) can be inserted and engaged.

As shown in enlarged detail in FIGS. 2 and 3, the bolts 9 and 8 for fixing the power line and the main fuse are screws that can be screwed into the screw holes 7°6 of the mounting seat 4. part 11, and a hexagonal columnar head 13 connected to the threaded part 11 via a flange 12. Notched neck 1
4 is formed, and the front side (threaded part 1
It is divided into a first head 13a on the side (1 side) and a second head 13b on the rear side. The neck portion 14 is set so that it will break when a torque (approximately 50 to 110 kq-CIll) that exceeds the specified tightening torque required to securely fix the end portion of the power line 1 to the mounting seat portion 4 is applied. has been done. Here, when the power line 1 or the main fuse 3a is fixed with the bolts 9, 8, the cover member 5 for covering the mounting seat 4 is in a state where the second head 13b is attached to the bolts 9, 8. The bolt 9.8 cannot be closed, but can only be closed when the neck 14 of the bolt 9.8 is broken and the second head 13b is removed.

When fixing the end of the power line 1 to the mounting seat 4 of the fuse box 2 using the bolt 9 described above, in advance,
Each fuse 3 is assembled in the upper part of the fuse box 2, and a cover member 5 covering the mounting seat part 4 is opened.

In such a state, the engaging portion 10 at the end of the power t@1
is inserted into and engaged with the threaded portion 11 of the bolt 9, and the bolt 9 is screwed into the screw hole 7 on the lower side of the mounting seat portion 4, and the neck portion 1 of the bolt 9 is
The end portion of the power line 1 is fixed onto the mounting seat portion 4 by tightening the power line 1 until the portion 4 breaks.

At this time, the neck 14 of the bolt 9 will break if the torque exceeds the specified tightening, so the end of the power line 1 must always be tightened to the mounting seat 4 with the specified tightening torque or higher so that it is firmly fixed. become.

Also, at the same time as fixing the end of the power line 1 described above.

The main fuse 3a incorporated in the upper part of the fuse box 2 is attached to the fuse box 2 by screwing the bolt 8 into the screw hole 6 on the upper side of the mounting seat 4 and tightening it until the neck 14 of the bolt 8 breaks. Fix it. In fixing the main fuse "3a," as in the case of fixing the end of the power line 1, the main fuse "3a" is always firmly fixed by tightening with a specified torque or higher.

Thereafter, the cover member 5 is closed to cover the mounting seat portion 4. At this time, the cover member 5 can be closed only when the necks 14 of the bolts 9, 8 for fixing the power line and the main fuse are broken and the second head 13b is removed. Since it cannot be closed with the part 13b attached, the operator must remove the second head 1.3b of the bolt 9.8.
This will help prevent work errors by checking whether the parts are removed or not. With the above steps, the fixing of the end portion of the power line 1 and the series of operations associated therewith are completed.

Therefore, in the above power line fixing method,
Since the end of the power line 1 is firmly fixed to the mounting seat 4 of the fuse box 2 by always tightening it with more than the specified torque, power loss due to poor connection between the power line 1 and the fuse box 2 is avoided. In addition, it is possible to prevent the bolt 9 from loosening due to vibration of the vehicle body, resulting in a loss of power I5.
i+1 can be reliably prevented from coming off from the fuse box 2. In particular, as in the above embodiment, the mounting seat 4
The J-bar member 5 that covers the bolt 9 is closed only when the neck 14 of the bolt 9 is broken and the second head 13b is removed, and the operator is therefore informed that the second head 131) of the bolt 9 has come off. Check to see if it's there? This is very advantageous because it prevents work errors.

On the other hand, when removing the end of the power line 1 from the mounting seat 4 of the fuse box 2, tighten the bolt 9 with the first head 13a of the bolt 9.
The end portion can be easily removed.

In the above embodiment, the present invention is applied to the case where the power line 19; E part is fixed to the mounting seat 4 of the fuse box 2, but other power lines can also be fixed to a predetermined mounting part of an electrical component or the like in a vehicle. Of course, it can also be applied in the same way.

(Effects of the Invention) As described above, according to the method for fixing a power line in a vehicle according to the present invention, the engaging part of the power line end is inserted into a bolt having a neck that breaks when tightened to a prescribed torque of 1-lux or more, and the bolt By tightening the power line end to the mounting part until the neck breaks, the power line end is always tightened with more than the specified torque and is securely fixed. It is possible to prevent power loss due to poor connection, and also to prevent disconnection of the power line due to the influence of vehicle body vibration.

[Brief explanation of drawings]

The drawings relate to an embodiment of the present invention, and FIG. 1 is a perspective view showing a state before assembly of a fuse box, power lines, etc.;
2 is a side view of the bolt, and FIG. 3 is a view taken from the top direction A in FIG. 2. 1... Power line, 4... Mounting seat, 9... Bolt,
10... Engagement part, 14... Neck part. Patent applicant: Mazda Motor Corporation Agent 1) Hiroshi, -1st
Figure 3 Figure 2

Claims (1)

[Claims] (1) Insert the engaging part provided at the end of the power line into a bolt that has a neck that breaks when the specified tightening torque is exceeded, and tighten the bolt against the mounting part until the neck breaks to secure the power line end. How to fix power lines in a vehicle.