JPS6228487Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a casing for an air conditioner for an automobile, which has a pair of approximately bowl-shaped pieces joined together in the middle.

(Prior art) Generally, an air conditioner for an automobile has an intake section,
It is constructed by connecting a cooler part and a heater part, and each of these parts usually has a casing made of synthetic resin (ABS resin, etc.). For example, the cooler section houses an evaporator 2 inside a synthetic resin casing 1, as shown in FIG. This casing 1 is made by joining bowl-shaped pieces 3 and 4 formed in a substantially bowl-shape (strictly speaking, various partition walls etc. are integrally molded inside) so that the middle skins fit together (hereinafter simply referred to as middle-joining). ). As a means for connecting and fixing the two bowl-shaped pieces 3, 4, as shown in FIG.
Recesses 7 and 8 for plate spring engagement are formed in the shoulder portions of C 6 and both ends are engaged in the recesses 7 and 8, respectively.
A molded metal plate spring 9 is engaged and fastened to fix it.

(Problem to be solved by the invention) However, in the case of such a conventional casing, since a C-shaped leaf spring is used to fasten and fix both bowl-shaped pieces, the shape of the leaf spring is changed to a bowl-shaped one. It has to be done separately from the pieces, requires processes such as pressing, and is uneconomical due to high material costs.Also, during assembly, extra steps are required for attaching the leaf springs, which is not desirable in terms of work efficiency. It was something I didn't have.

In order to eliminate this inconvenience,
As shown in Publication No. 125815, a protrusion is formed in one of the upper case or the lower case, and a hole into which the protrusion is inserted and engaged is formed in the other, and the protrusion of the one case is inserted into the hole of the other case. A casing for an air conditioner for an automobile has been developed in which a presser piece for pressing the rear side of the protrusion is formed in the case with a hole so that the engagement state is difficult to disengage when the protrusion is inserted. There is.

However, since such a casing does not require the conventionally used C-shaped leaf springs, etc., it is economically advantageous and easy to assemble. This has the disadvantage that it is not easy to attach and detach.

The present invention was developed to eliminate these inconveniences, and allows the bowl-shaped pieces to be easily assembled to each other without using separate parts, and also to be easily detachable after assembly. The purpose of the present invention is to provide a possible casing for an automobile air conditioner.

[Structure of the idea]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an automobile-use product which is formed by joining a pair of bowl-shaped pieces 11 and 12 made of synthetic resin in the shape of a bowl. In the casing of the air conditioner, a gate-shaped gate is provided on the outer surface of the joint portion of one of the bowl-shaped pieces 11 and 12 in a direction along the outer surface of the joint portion 14 of the bowl-shaped piece 12 on the other side. A locking ring 19 is provided protrudingly, and a locking pawl 21 that fits into the locking ring 19 is provided on the outer surface of the joint 13 of the bowl-shaped piece 11 on the other side, so that the locking pawl 21 and the locking pawl 21 fit into the locking ring 19. Claw 2
A recess 31 is formed between the bowl-shaped piece 11 and the protruding portion 1.
and between the locking ring 19 and the bowl-shaped piece 11 from which the locking claw 21 is protruded,
A feature is that a gap 30 that is continuous with the recess is formed when the bowl-shaped pieces 11 and 12 are assembled.

(Function) In the case of the casing according to the present invention that employs such means, the joints of both bowl-shaped pieces can be formed at these joints, without using the conventionally used C-shaped leaf springs, etc. By engaging the locking ring and the locking pawl, assembly can be easily performed. Moreover, even after assembly, the worker's fingers can easily fit into the gap formed between the locking ring and the bowl-shaped piece with the locking claw formed thereon. Good workability for attaching and detaching.

(Embodiment) Next, an embodiment of the present invention will be described with reference to FIGS. 3 to 5. In the figure, "10" is a casing according to the present invention, and although not shown inside this casing 10, reinforcing ribs or various partition walls are actually formed, and a pair of upper and lower bowl-shaped parts are formed. The bowl-shaped pieces 11 and 12 are placed together in the middle.

Annular joints 13 and 14 are integrally molded at the opening edges of both bowl-shaped pieces 11 and 12, respectively, with their outer surfaces bulged out and thickened, and the end surfaces thereof serve as joint surfaces 15 and 16. Both joint surfaces 15, 16
A protrusion 17 is integrally provided in an annular shape at the widthwise center of one side of the joint surface 16, that is, the lower joint surface 16 in this embodiment, and the projection 17 is fitted into the joint surface 15 on the other side. A concave groove 18 is formed, and when the bowl-shaped pieces 11 and 12 are brought together, the protrusion 17 and the concave groove 18 are fitted into each other, and no air leakage occurs from the mating surfaces of the two pieces. That's what I do.

Furthermore, a gate-shaped locking ring 19 is integrally provided on the outer surface of the lower joint portion 14 and projects in a direction along the outer surface of the upper joint portion 13 . This locking ring 19 is formed with an inclined surface 20 whose upper end is inclined in the direction of opening outward, and between this inclined surface 20 and the upper bowl-shaped piece 11, a worker's finger or the like is placed. A gap 30 into which it is inserted is formed.

On the other hand, an upward locking claw 21 is integrally provided on the outer surface of the upper joint part 13, and when the locking claw 21 is in a state where both the joint surfaces 15 and 16 are in contact with each other, the gate-shaped locking The locking claw 2 fits into the internal space 22 of the ring 19 and is attached to the inner edge 23 of the distal end of the locking ring 19.
1 is engaged. Also, on the outer surface of this locking pawl 21, there is a slope 2 whose upper side is in the opening direction.
4 is formed, and when joining both the bowl-shaped pieces 11 and 12, the above-mentioned engagement ring 19 is attached to this inclined surface 24.
The inclined surfaces 20 of the two pieces come into sliding contact with each other, and the joining ring 19 is elastically expanded outward, and the two bowl-shaped pieces 11,
12 are brought close to each other so that they are locked to each other. A recess 31 continuous to the gap 30 is also formed between the locking pawl 21 and the upper bowl-shaped piece 11.

In addition, 25 in the figure is a sealing material made of an elastic material fitted into the groove 18, and both bowl-shaped pieces 11,
12 are joined and the locking protrusion 19 and the engaging pawl 21 are joined to each other, the material is compressed in the groove 18 and the sealing performance of the joint is improved. However, this is not necessarily the case. You don't have to.

[Effect of idea]

Since the casing of the automotive air conditioner according to the present invention is configured as described above, there is no need for a separate part such as a leaf spring as a member for connecting and fixing the two bowl-shaped pieces as in the past. Since the connecting and fixing member can be integrally molded at the same time as both bowl-shaped pieces are molded, the number of parts is reduced, and manufacturing costs can be reduced. Further, the assembly of the two bowl-shaped pieces is significantly simplified since the locking ring and the locking pawl are engaged by simply joining the two bowl-shaped pieces together.

Furthermore, when connecting and fixing, the locking pawl fits into the gate shape without overlapping another part to the joint of both bowl-shaped pieces, so the maximum thickness of the joint part, that is, the thickness of the inner surface of the bowl-shaped piece and the locking projection. The size between the outer surfaces can be reduced, and it also has the advantage of being able to be accommodated in a narrow space inside a car.

Moreover, even after the two bowl-shaped pieces are assembled, the worker's fingers can easily enter the gap formed between the locking ring and the bowl-shaped piece with the locking claws, making it difficult to engage the pieces with your fingers. By bending the retaining ring outward, both bowl-shaped pieces can be easily attached and detached.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of a conventional cooler section, Fig. 2 is an enlarged sectional view of the joint part of the casing, and Fig. 3 is a partially enlarged sectional view showing the joint part of the casing of the embodiment of the present invention. Figure 4 is a front view of the same.
FIG. 5 is a partially exploded perspective view. 10... Casing, 11, 12... Bowl-shaped piece,
13, 14...Joint part, 15, 16...Joint surface, 17
...Protrusion, 18...Concave groove, 19...Engagement ring, 21...
Locking claw.

Claims (1)

[Scope of utility model registration request] In the casing of an air conditioner for an automobile, which is formed by joining a pair of bowl-shaped pieces 11 and 12 made of synthetic resin in the shape of a bowl, one of the bowl-shaped pieces 11 and 12 The joint 14 of the bowl-shaped piece 12 on the other side is attached to the outer surface of the joint on the side.
Gate-shaped locking ring 19 protruding in the direction along the outer surface
At the same time, a locking pawl 21 that fits into the locking ring 19 is provided on the outer surface of the joint 13 of the bowl-shaped piece 11 on the other side, and the locking pawl 21 and the locking pawl 21 protrude. A recess 31 is formed between the bowl-shaped piece 11 provided, and a recess 31 is formed between the lock ring 19 and the bowl-shaped piece 11 protruded from which the lock claw 21 is continuous to the recess. A casing for an air conditioner for an automobile, characterized in that such a gap 30 is formed when the bowl-shaped pieces 11 and 12 are assembled.