JP3344222B2 - Bolt fastening box for automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolted automobile fixing box, and more particularly, to a large resin such as an auxiliary box lower cover for accommodating a junction box, a relay box and the like and directly fixing the automobile to a vehicle body by bolting. Regarding boxes made of molded products, when these boxes are fixed to the vehicle body, bolts are attached to the tip of the jig and tightened and fixed to the screw holes provided on the vehicle body side, and the bolts are temporarily placed around the screw hole periphery In this case, the bolt can be held without falling off from the temporary placement position.

[0002]

2. Description of the Related Art Conventionally, an accessory box lower cover 1 made of a large-sized resin molded product for accommodating a junction box, a relay box, and the like shown in FIGS. 4 and 5 is disposed in an engine room on an assembly line of an automobile manufacturer. Then, it is fastened and fixed to the vehicle body by bolts.

In the fixing process of the lower cover 1, the bolts 2 for fastening and fixing are temporarily placed in ribs 1 b protruding from the periphery of the bolt holes 1 a of the lower cover 1. A bolt 2 is set at the tip of the jig 3, and is fastened and fixed to a nut 5 provided on the vehicle body 4 through a bolt hole 1 a.

[0004]

The height H1 of the rib 1b forming the space S for temporary placement of the bolt is lower than the height H2 of the bolt 2, and the head 2a of the bolt 2 is connected to the upper end surface of the rib 1b. 1c, the bolt 2 is temporarily placed. However, when a tool or the like carried by an operator hits the bolt head 2a, the bolt 2 may fall over the rib 1b and fall downward as shown by an arrow. In the accessory box lower cover 1, since the bolt fastening position is located above the bottom lower end 1d of the lower cover 1, the bolt 2 that has fallen to the bottom lower end 1d cannot be easily taken out, and the bolt tightening operation is not possible. There was a problem that was worse.

When the rib 1b is raised, the bolt 2 can be prevented from falling off. However, when the rib 1b is raised,
The diameter of the temporary storage space S surrounded by the rib 1b is
Since it is so small that it does not fall down, there arises a problem that it becomes impossible to easily set the jig 3 by grasping the bolt 2 in the narrow and deep temporary storage space.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made so that a temporarily placed bolt does not fall off, and a bolt in a temporary placement space can be easily gripped and set on a jig. The challenge is to do.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to fix a large box to a vehicle body by bolts. Around the ribs that form the space,
The height of the rib is set higher than the height of the bolt head when the bolt is temporarily placed inside the rib, and a notch large enough to allow a finger to be inserted is provided at least at a position facing the upper end of the rib. The present invention provides a box for fixing a bolted automobile, which is characterized in that:

As described above, since the height of the rib is large so that the bolt head temporarily placed inside the rib is hidden without being exposed to the outside, the bolt head hits an external interference material such as a tool. Can be prevented. As a result, the bolts can be temporarily placed securely without dropping into the temporary placement space surrounded by the ribs. On the other hand, when the temporarily put bolt is set at the tip of the jig, if the operator puts his finger through a pair of notches at the upper end of the rib, the bolt head can be grasped and the bolt can be easily set on the jig. can do.

The notch has a semicircular shape large enough for a worker's finger to enter, and has a diameter smaller than the diameter of the bolt head. By making the diameter smaller than the diameter of the bolt head, the bolt is prevented from dropping through the notch. In addition, the notch is formed in a semicircular shape, and the edge is eliminated to soften the contact with the operator's finger.

The cutouts provided at the upper ends of the ribs are not limited to two opposing ones, but may be four at intervals of 90 degrees. In this case, the operator grasps the bolt head in a direction that facilitates the work. be able to.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The vehicle fixing box of the embodiment is a lower cover similar to the accessory box lower cover 1 made of a large-sized resin molded product for accommodating the junction box, the relay box and the like shown in FIG. Illustration is omitted.

In the lower cover 10 of the embodiment, a rib 10b having a height H3 is formed in an annular shape at the periphery of the bolt hole 10a. The height H3 of the rib 10b is set to be larger than the height H1 of the conventional rib 1b (H3> H1). The height H3 of the rib 10b is equal to the height H of the bolt 2.
H2 is set equal to or slightly higher than H2 (H3 ≧ H2). That is, in the temporary storage space 11 surrounded by the ribs 10b,
The head 2a of the bolt 2 which is temporarily or vertically set and temporarily placed is not exposed and hidden from the upper end of the rib 10b.

When the bolts 2 are temporarily placed in the temporary placement space 11, the bolts 2 are vertically inserted with the head 2a at the upper end. As shown in FIG. 1, the inserted bolt 2 is locked in such a manner that the lower end of the shaft portion 2b hits the edge of the bolt hole 10a and is locked, and the head 2a is inclined and stably hits the rib 10b. In this state, the height of the bolt head 2a becomes lower than the bolt height H2. Therefore, even if the height H3 of the rib 10b is the same as the bolt height H2, the bolt head 2b
Is lower than the upper end of the rib 10b and is not exposed to the outside.

The rib 10b is provided with two sets of substantially semicircular cutouts 10d opposed to each other from the upper end 10c, that is, four notches 10d at intervals of 90 degrees. These notches 10d are set to have a size that allows a worker's finger to enter, and the diameter of the notch 10d is set to be smaller than the diameter of the bolt head 2a. Notch 1
0d may be provided at the opposing position as two instead of four.

Further, a bolt hole 10 surrounded by a rib 10b is provided.
a portion 10 corresponding to the bottom of temporary storage space 11
In e, a drain hole 10f is formed, and the bottom surface portion 10e is slightly inclined toward the drain hole 10f. Therefore, even when water enters the temporary storage space 11 when the vehicle is used, the water can be drained from the drain hole 10f.

By providing the rib 10b,
As shown in FIG. 1, when the bolt 2 is inserted into the temporary placing space 11 and temporarily placed, the bolt head 2a is moved to the upper end 1 of the rib 10b.
0c, and the bolt head 2a is not exposed to the outside. Therefore, even if a tool or a worker's hand touches the upper part of the rib 10b, the upper part of the rib 10b does not come into contact with the bolt head 2a. I will not do it.

When the head 2a of the temporarily placed bolt 2 is set at the tip of the bolting jig 3, as shown in FIG. 3, a pair of notches 10d at the upper end of a rib 10b are opposed to a pair of notches 10d. And grip the bolt head 2a. With the bolt 2 gripped vertically, it is set on the tip of the bolt 3.

After setting the bolt 2 on the jig 3, the jig 3
As a result, the bolt shaft 2b is inserted into the bolt hole 10a, and the bolt 2 is fastened and fixed to the nut 5 fixed to the vehicle body 4 in the vertical direction.

[0020]

As is apparent from the above description, according to the present invention, the height of the rib forming the temporary bolt holding space is increased, the bolt head projects from the upper end of the rib, and the external interference member (tool) is formed. And workers),
By holding the bolt in the temporary storage space, it is possible to prevent the bolt from falling out of the temporary storage space. Therefore, the interruption of the bolting operation due to the bolt dropping can be eliminated, and the operation of bolting and fixing the box to the vehicle body can be efficiently performed.

Further, the difficulty in grasping the temporarily placed bolt, which is a problem when the rib is raised, is attributable to the provision of a pair of notches for inserting fingers at least at the upper end of the rib. The operator can easily hold the bolt inserted into the jig with his finger and set it on the bolting jig.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an explanatory diagram showing a state where a bolt temporarily placed in a temporary placement space of the embodiment is gripped by a finger.

FIG. 4 is a plan view of an automobile fixing box.

5A is a cross-sectional view showing a conventional example, and FIG. 5B is a plan view of FIG.

[Explanation of symbols]

 2 bolt 2a bolt head 10 lower cover 10a bolt hole 10b rib 10c notch

Claims (2)

(57) [Claims] 1. A large box is fixed to a vehicle body with bolts, and a rib for forming a small-diameter temporary bolt space is provided around a periphery of a bolt hole of the box. Is set higher than the height of the bolt head when the bolt is temporarily placed inside the rib, and a notch large enough to allow a finger to be inserted is provided at least at a position facing the upper end of the rib. Bolt-fastened car fixing box. 2. The box for fixing a bolted automobile according to claim 1, wherein the notch has a semicircular shape large enough to receive a finger of an operator, and has a diameter smaller than a diameter of a bolt head. .