JPH07117462A - Nozzle for use in nozzle defroster - Google Patents

Abstract

PURPOSE:To hold constant the width of the opening of a nozzle defroster made of a pair of split moldings, while keeping the area of the opening wide. CONSTITUTION:This nozzle comprises a pair of moldings 2, 3 having slits and split apart along the longitudinal direction of the slits. One of the moldings (2) has a bridge member 20 projecting toward the other molding 3 and having a lock claw 21 at its end, and the other molding 3 has a lock hole 30 in which the lock claw 21 is engaged so that the moldings are integrated together, and the bridge member 20 has a projecting portion 22 that abuts to the other molding 3, and the other molding 3 is sandwiched between the lock claw 21 and the projecting portion 22 and restrained from moving relative to the molding 2. Therefore the area of an opening is not decreased and the width of the opening is held constant, thus stabilizing the quantity of air and providing good appearance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle for a defroster which is opened in a lower portion of a windshield of an automobile and is used for removing fog on the windshield.

[0002]

2. Description of the Related Art A nozzle used in a nozzle defroster has a slit-shaped opening at one end and is arranged such that its longitudinal direction is along the windshield. The other end of the nozzle is connected to the air outlet of the air conditioner. Therefore, the overall shape of the nozzle is substantially fan-shaped, with one end having a small diameter because it is connected to the outlet and a long slit-shaped opening at the other end.

This nozzle is difficult to integrally mold because it requires a partition inside. Therefore, it is divided into a pair of front and rear parts along the longitudinal direction of the opening, and after forming each molded body, they are mechanically coupled and integrated. In the nozzle having such a configuration, the slit-shaped opening is formed by joining a pair of parts. Therefore, the opening width may be deformed at the time of assembly, but the opening area of the opening is preferably as large as possible.

Therefore, conventionally, as shown in FIG. 4, for example,
The claw member 101 protruding from the one molded body 100 is inserted into and engaged with the locking hole 201 of the other molded body 200, thereby restricting the change in the opening width of the opening 150. Further, as shown in FIG. 5, it is also known that a pin 102 protruding from one molded body 100 is brought into contact with the other molded body 200, thereby restricting a change in the opening width of the opening 150.

[0005]

However, in the movement regulation by the claw member 101 shown in FIG. 4, the other molded body 200
Can be moved in a direction in which the opening width of the opening 150 is narrowed. When the opening width is narrowed in this way, the air volume may decrease, or noise called a whistling phenomenon may occur.

Further, in the regulation by the contact of the pin 102 shown in FIG. 5, the other molded body 200 can be moved in the direction in which the opening width of the opening 150 is widened. In this case, a defect occurs in the appearance, and the air flow rate to the nozzle defroster increases, so that the air flowability to other defrosters and indoor air conditioning decreases. The present invention has been made in view of such circumstances, and in a nozzle defroster formed of a pair of divided molded bodies, it is possible to keep the opening width of the opening constant while keeping the opening area of the opening wide. To aim.

[0007]

A nozzle for a defroster of the present invention for solving the above-mentioned problems comprises a pair of molded products having slit-shaped openings and divided along the longitudinal direction of the openings. The inner wall of the opening of one molded body has a bridge member that projects toward the other molded body and has a locking claw at the tip, and the opening of the other molded body has a locking hole that engages with the locking claw. A nozzle having a locking claw that penetrates the locking hole and engages with the outer wall of the opening of the other molded body to form an integrated structure, and the bridge member is a protrusion that abuts the inner wall of the opening of the other molded body. Have a section,
The other molded body is characterized in that it is sandwiched between the locking claw and the convex portion and its relative movement is restricted.

[0008]

In the nozzle defroster nozzle of the present invention, the movement of the other molded body in the opening portion in the direction of approaching the one molded body is such that the inner surface of the other molded body abuts the convex portion of the bridge member. Is regulated by. The movement of the other molded body in the opening away from the one molded body is
The outer surface of the other molded body is regulated by coming into contact with the locking claw.

As a result, the opening width of the opening is stable, neither narrower nor wider. Further, it is only necessary to provide the conventional claw member with the convex portion, and if the convex portion is provided so as to be orthogonal to the opening surface and the projected area thereof is not more than the projected area of the bridge member,
The opening area can be maintained at the same level as the conventional one.

[0010]

EXAMPLES The present invention will be specifically described below with reference to examples. Figure 1
3 shows a nozzle defroster nozzle according to an embodiment of the present invention. This nozzle 1 is made of resin and has a pair of openings 10 at one end as shown in the overall view of FIG.
Holds 1. The opening 10 is slit-shaped and has an inlet 11
It is longer and has a substantially fan-shaped tubular shape as a whole. Further, a cylindrical portion 12 that communicates with the introduction port 11 and opens to the left and right is provided in the central portion.

In this nozzle, the inlet 11 is connected to the outlet of the air conditioner, and the tube portion 12 is connected to the side defroster. The opening 10 is connected to the outlet of the instrument panel, but the flange 13 protruding from the periphery of the opening 10 is brought into close contact with the back surface around the outlet, and the opening 10 matches the outlet and the flange. Thirteen
Is configured not to appear. Then, it is used by being fixed to the vehicle body with bolts via the mounting flanges 14 on both the left and right sides.

The nozzle 1 is composed of a first molded body 2 and a second molded body 3 divided on both sides at the center of the opening 10 in the width direction. The first molded body 2 and the second molded body 3 are separately formed by injection molding, and are integrated by engagement of a locking projection and a locking recess (not shown). As shown in FIGS. 2 and 3, a bridge member 20 projecting to the side opposite to the flange portion 13 is formed in a portion of the first molded body 2 where the opening 10 is formed. The bridge member 20 has an opening 10
A plurality of them are formed at intervals in the longitudinal direction. A claw portion 21 is formed at the tip of the bridge member 20, and a rib (convex portion) 22 that protrudes in the direction of the wind exiting the opening 10 is provided behind the locking claw 21. A gap 23 is formed between the locking claw 21 and the rib 22.

A locking hole 30 is formed in a portion of the second molded body 3 where the opening 10 is formed so as to substantially match the sectional shape of the locking claw 21. When forming the nozzle from the first molded body 2 and the second molded body, the bridge member 20 is fitted into the locking hole 30 at the opening 10. At this time, the upper side 31 of the locking hole 30 is at the same position as the upper surface 24 of the bridge member 20. Therefore, the locking claw 21 comes into contact with the upper side 31 and is pressed downward, and the bridge member 2
0 is inserted while bending downward. When the locking claw 21 crosses the locking hole 30, the bridge member 20 is elastically deformed to its original shape, and the upper wall portion of the locking hole 30 engages with the gap 23. Since the length of the rib 22 is substantially the same as the opening width of the opening 10, the engagement between the first molded body 2 and the second molded body 3 is completed in this state, and the integral nozzle 1 is formed. .

That is, in the nozzle of this embodiment, the inner surface of the second molded body 3 is in contact with the tips of the ribs 22 and the outer surface thereof is in contact with the locking claws 21.
The relative movement of the molded body 2 and the second molded body 3 is restricted, and the opening width becomes constant. Therefore, the flange portion 13 is not exposed from the blowout port of the instrument panel, the appearance is excellent, and the air volume is stable. Further, since the opening width is not narrowed, there is no problem that a whistling phenomenon occurs.

The rib 22 is formed perpendicularly to the opening surface, and the projected area with respect to the opening surface is the bridge member 20.
Will be absorbed by the projected area of. Therefore, the opening 10
The resistance to the wind from is the same as that of the case where only the bridge member 20 is provided, and the same opening area as the conventional one can be secured.

[0016]

[Effects of the Invention] That is, according to the nozzle for a defroster of the present invention, since the opening area of the opening can be made constant, the air volume is stable, and the appearance defect and the whistling phenomenon do not occur. Further, since the convex portion can be formed by engraving a part of the conventional mold, there is an advantage that the mold manufacturing cost is low.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a nozzle defroster nozzle according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an essential part of a nozzle for a nozzle defroster according to an embodiment of the present invention.

FIG. 3 is an enlarged perspective view of a main part of the nozzle defroster nozzle according to the exemplary embodiment of the present invention when the first molded body and the second molded body are assembled.

FIG. 4 is a cross-sectional view of essential parts of a conventional nozzle defroster nozzle.

FIG. 5 is a cross-sectional view of essential parts of a conventional nozzle defroster nozzle.

[Explanation of symbols]

1: Nozzle for nozzle defroster 2: First molded body
3: Second molded body 10: Opening 20: Bridge member 2
1: Locking claw 22: Rib (projection) 23: Gap 3
0: Locking hole

Claims (1)

[Claims] 1. A pair of molded products each having a slit-shaped opening and divided along the longitudinal direction of the opening, wherein the inner wall of the opening of one molded product faces the other molded product. Has a bridge member that protrudes and has a locking claw at the tip, and has a locking hole that engages with the locking claw at the opening of the other molded body, and the locking claw penetrates the locking hole. And a nozzle integrated with the outer wall of the opening of the other molded body, wherein the bridge member has a convex portion that abuts the inner wall of the opening of the other molded body, and the other molded body is A nozzle for a defroster, wherein relative movement is restricted by being sandwiched between the locking claw and the convex portion.