JPS6144493Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air conditioner case for an automobile, and particularly relates to the structure of a bolt for attaching the case body.

A conventional automobile air conditioner case body will be explained with reference to FIGS. 1 to 5. 1 is fixed to the vehicle body 1, and 2 is a partition plate between the engine compartment 3 and the vehicle body 1. Reference numeral 4 denotes an air conditioner case body, on which bolts 8 protruding from the dividing surface 7 of the upper and lower case members 5 and 6 are inserted through the partition plate 2 and tightened and fixed with nuts 9.
The bolt 8 is attached to the upper and lower case members 5 and 6 by a bolt holding part 10 that is divided into upper and lower parts by this dividing surface 7.
11, and the dividing surface 1 of the holding parts 10, 11
Fit the heads 13 of the bolts 8 from 2 into the upper and lower holding parts 10 and 11 by 1/2, and then
The shaft portion 14 of the bolt 8 projects horizontally from the dividing surface 12 of the bolt 11. When installing the air conditioner case body 4, the upper and lower case members 5 and 6 are sealed by tightening the projecting edges 15 and 16 formed on the outer periphery of the respective dividing surfaces 12 with clips 17, and then attaching the shaft portion 14 of the bolt 8.
is inserted into the through hole 18 on the vertical part of the partition plate 2 and fixed by tightening with the nut 9, and the protruding piece 19 that protrudes upward from the upper case member 5 connects with the protruding piece 20 on the lower surface of the horizontal part of the partition plate 2. It is fixed with bolts and nuts. In the above configuration, when the nut 9 is screwed onto the shaft portion 14 of the bolt 8 and tightened, the square bolt 8 is
The upper and lower holding parts 10, 1 are engaged with the heads 13 of
A couple acts on 1 in the direction of the arrow in FIG. 5, and has the effect of prying apart the dividing surface 12 of the holding parts 10 and 11. For this reason, it is necessary to tighten the left and right sides of the holding parts 10 and 11 with the clips 17, which not only requires a large number of clips 17 and takes time to tighten, but also may cause gaps even when tightened with the clips 17. The problem was that the sealing performance deteriorated.

This idea was created in view of the above problems.
A small protrusion for biting is formed on the inner end surface of the head of the bolt that is fitted into the bolt holding parts formed on the upper and lower case members of the air conditioner case body, the inner end surface of which comes into contact with the inner wall of the holding part, This is intended to improve the sealing performance of the air conditioner case body by preventing the bolt from rotating when the nut is tightened, and by preventing the rotation of the bolt from creating a gap between the dividing surfaces of the upper and lower case members.

The configuration of the present invention is that the air conditioner case body is divided into upper and lower case members, which are divided into upper and lower parts, and the head of the bolt is fitted into the bolt holding part that is divided and formed at the dividing surface of the upper and lower case members. In an air conditioner case in which the bolt shaft protruding through the dividing surface of the upper and lower bolt holding parts is inserted into a partition plate in the automobile body and tightened with a nut, the head of the bolt is crimped to the inner wall of the bolt holding part. A small protrusion for biting is formed on the inner end surface.

Next, the structure of an embodiment of the present invention will be explained with reference to the accompanying drawings FIG. 1 and FIGS. 6 to 8.

4 is an air conditioner case body, which is composed of an upper case member 5 and a lower case member 6;
An annular protrusion 21 and an annular groove 22 are formed on the dividing surface 7 consisting of the opening end surface of the clip 6, and an annular protrusion 21 and an annular groove 22 are formed on the outer periphery of the dividing surface 7, respectively. It is designed to be tightened at 17. Further, on the outer surfaces of the upper and lower case members 5 and 6, there is a dividing surface 7 of the upper and lower case members 5 and 6 facing each other vertically.
Bolt holding part 1 having dividing surface 12 which is the same plane as
0 and 11 are provided in a protruding manner, and a rectangular fitting recess 2 is provided inside the holding portions 10 and 11 and is open to the dividing surface 12.
3 and 24 are formed, and shaft hole portions 27 and 28 are formed in the outer walls 25 and 26 of the respective recesses 23 and 24, respectively, and are notched in a semicircular arc shape toward the dividing surface 12.

The head 13 of the bolt 8 has a rectangular shape, and is divided into upper and lower halves by the shaft center, and each half is fitted into the fitting recesses 23 and 24 of the upper and lower holding parts 10 and 11, respectively. A portion of the portion 14 is held vertically by the shaft holes 27 and 28 and projects outward. Further, on the inner end surface 29 of the head 13 which is pressed against the inner walls of the fitting recesses 23 and 24, a plurality of sharp small protrusions 30 are formed on the upper and lower sides, respectively, to bite into the outer walls 25 and 26 when tightened. ing. From the tip of the small protrusion 30 to the head 13
The distance a to the outer end surface 31 is equal to the width b of the recesses 23 and 24, or the relationship a<b holds.

The upper and lower case members 5 and 6, in which the head 13 of the bolt 8 is fitted and held in the holding parts 10 and 11, are matched at the dividing surface 7, and the upper and lower projecting edges 15 and 16 are held at appropriate positions by the clip 1.
It is engaged at 7.

A hanging holding protrusion 19 is provided on the upper surface of the upper case member 5 in a protruding manner.

Next, the operation of the above embodiment will be explained.

The shaft portion 14 of the bolt 8 that protrudes from between the holding portions 10 and 11 of the air conditioner case body 4 is made to protrude from the through hole 18 of the partition plate 2 of the automobile body 1, and the nut 9 is screwed into this protrusion and tightened. As a result, the head 13 of the bolt 8 presses the holding parts 10 and 11 onto the partition plate 2, and the air conditioner case body 4 is held. Furthermore, when the nut 9 is rotated and tightened, the small protrusion 30 on the inner end surface 29 of the head 13 of the bolt 8 engages the upper and lower holding parts 10, 1.
It bites into the inner wall surface of each recess 23, 24 of 1,
Rotation of the bolt 8 is prevented. For this reason, the upper and lower holding parts 10 and 11 engaged with the square-shaped head 13
However, since they are not rotated by the bolts 8, the dividing surfaces 7, 12 of the upper and lower case members 5, 6 and the holding parts 10, 11 that are brought together will not open. Further, the protruding piece 19 on the upper surface of the case body 4 is attached to the protruding piece 20 on the horizontal portion of the partition plate 2.

FIG. 9 shows another embodiment of the bolt 8, with the head 1
3 is formed into a disk shape. Note that the other configurations are the same as those of the previous embodiment.

According to the present invention, the head of the bolt is held in the bolt holding part provided vertically on the dividing surface of the air conditioner case body which is divided into the top and bottom, and the shaft of the bolt is made to protrude from the bolt holding part. In an air conditioner case where a bolt is inserted into a partition plate of an automobile body and fastened with a nut, a small protrusion for biting is formed on the inner end surface of the head of the bolt that is crimped against the inner wall of the bolt holding part, so that the nut can be tightened. When the bolt is tightened to the partition plate, the small protrusion of the bolt bites into the inner wall of the upper and lower retaining parts,
Since the bolt is prevented from rotating and its head does not have the effect of opening the dividing surface of the holding part, there is no need to tighten both sides of the holding part with clips, and the air conditioner case remains sealed. I can do it.

[Brief explanation of drawings]

Figure 1 is a side view showing the air conditioner case attached to the car body, Figure 2 is a perspective view of a conventional air conditioner case, Figure 3 is an exploded perspective view of the same bolt holder, and Figure 4 is the same as above. Vertical side view, Figure 5 is same as A-
A vertical sectional view, FIG. 6 is a perspective view of an air conditioner case showing an example of the implementation of the present invention, FIG. 7 is an enlarged vertical sectional side view of the same bolt holding part, FIG. 8 is a perspective view of the same bolt, The figure is a perspective view showing another embodiment of the same bolt. DESCRIPTION OF SYMBOLS 1... Automobile body, 2... Partition plate, 4... Air conditioner case body, 5, 6... Case member, 7, 12...
...Divided surface, 8...Bolt, 9...Nut, 10,
11... Bolt holding part, 13... Head, 29...
Inner end surface, 30... small protrusion.

Claims (1)

[Scope of utility model registration request] The air conditioner case body is divided into upper and lower case members which are divided into upper and lower parts, and the head of the bolt is fitted into the bolt holding part formed by dividing the upper and lower case members at the dividing surface, and the upper and lower bolt holding parts are fitted. In an air conditioner case in which the shaft of a bolt protruding through the dividing surface is inserted into a partition plate inside the automobile body and tightened with a nut, the bolt is bitten into the inner end surface of the head of the bolt that is crimped onto the inner wall of the bolt holding part. An automotive air conditioner case that is also characterized by the formation of small protrusions.