JPH09220926A - Wind direction adjusting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the accuracy of assembling, by forming on a case body a holding part into which a spacer is inserted and making an engaging projection on one surface of the spacer opposite to the holding part and an engaging recess on the other surface of holing part and energizing the engaging projection against one of the spacer and the holding part in the direction opposite to the direction that the spacer is inserted. SOLUTION: A spacer 31 is fitted on a rotation shaft 24 on each side of a housing frame body 21 and is slid in with a housing 20. As a tilting part 34a of an engaging projection 34 of the spacer 31 is slid in on the end of a holding part 16, the spacer 31 is pressed and deformed toward the frame body 21 side and the holding part 16 is also pressed outside to make a gap between itself and the spacer 31 and, when the spacer 31 is further slid in, the engaging projection 34 is passed the elevational part 16c of the holding part 16 and is engaged with a rectangular through hole 17. At the same time, a projection 36 of an elastic part 35 is put into contact with an elevational wall 16d of the holding part 16 to deform the elastic part 35 in the direction of an opening 37, thereby urging the spacer forward, whereby the engaging projection 34 is put into contact with the forward edge of the rectangular through hole 17 and thus is positioned, which eliminates play therebetween.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction adjusting device mounted on an automobile or the like for air conditioning a room.

[0002]

2. Description of the Related Art A conventional wind direction adjusting device will be described below.

As an example of a conventional air flow direction adjusting device, there is an air conditioner described in Japanese Utility Model Laid-Open No. 2-72120. In such an air conditioner, as shown in FIG. 5, a rotary shaft 4 for adjusting the blade angle is provided on both side surfaces of a housing 1 having a wind direction adjusting blade 2, and a predetermined operation brake is provided on the rotary shaft 4. In order to generate force, an elastic spacer 7 made of resin or the like is fitted. This spacer 7
As shown in FIG. 6, the central hole 7c is formed at the top of the conical outer wall 7a.
Is formed, and the peripheral portion of the center hole 7c is folded back inward to form an annular wall 7b. The housing 1 is biased and held by the case body 5 from both sides via the spacer 7 or sandwiching the spacer 7, and the housing 1 is rotated to adjust the wind direction.

[0004]

However, in the above-mentioned conventional configuration, the conical spacer 7 is previously fitted to the rotary shaft 4 of the housing body 1, and the housing 1 is further incorporated into the case body 5. In this case, the outer peripheral wall 7 of the spacer 7
Since "a" is deformed by being tilted in the axial direction, the rotating shaft 4 having a limited total length is hidden by the outer peripheral wall 7a, and therefore, there is a problem that a high degree of skill is required for predetermined assembly. .

Further, in the conventional example shown in FIG. 7, a plate-shaped spacer 8 is fitted on the rotary shaft 4 of the housing 1 and the plate-shaped spacer 8 is formed in the front portion of the case body 5 to form a concave shape. The housing 1 was rotatably attached to the case body 5 by inserting it into the holding portion 5a. However, in order to insert the spacer 8 into the holding portion 5a, it is necessary to provide a gap between the spacer 8 and the spacer 8 to some extent.
Will move to some extent, so that the position of the housing 1 cannot be determined, and if the dimensional accuracy of the decorative frame 6 is not obtained, the spacer 8 is loosened to deteriorate the operability.
Furthermore, there is a problem that abnormal noise may be generated due to vibrations and the like.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art by providing an airflow direction adjusting device capable of easily assembling parts, improving the assembling accuracy, preventing abnormal noise and improving the quality. The purpose is to provide.

[0007]

In order to achieve this object, the wind direction adjusting device of the present invention is configured such that the rotating shafts provided on both sides of the frame body having the ventilation holes are inserted into the shaft supporting portions of the spacers. In a wind direction adjusting device in which the frame body is housed in a case body via a spacer, a holding portion for inserting the spacer is formed in the case body, and one surface of a facing surface of the spacer and the holding portion is formed. An engaging projection is provided on the other surface, a locking recess is provided on the other surface for locking the engaging projection, and the engaging projection is provided on one of the spacer and the holding portion in the insertion direction of the spacer. Has a structure provided with a biasing means for elastically biasing in the opposite direction.

Here, engaging projections are provided on the spacers fitted to the rotary shafts on both sides of the frame body of the wind direction adjusting device to form a holding portion for inserting and holding the spacer in the case body, and this holding portion. An engaging recess is provided in the spacer to lock the engaging protrusion of the spacer, and a biasing means for elastically biasing the engaging protrusion of the spacer in a direction opposite to the inserting direction of the spacer is provided at the rear end of the spacer. .

As a result, the engaging projection of the spacer abuts and locks against the edge of the locking recess of the holding portion of the case body in the direction opposite to the insertion direction of the spacer, and is elastically biased to position the spacer. Since it is decided, there is no backlash. Also, the work of assembling the frame body and the case body is extremely easy because it is only necessary to slidably fit the spacer fitted on the rotating shaft of the frame body to the holding portion. Since it is possible to confirm that the parts are correctly assembled by engaging with the parts, variations in the parts mounting positions due to assembly errors are eliminated.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a ventilator device for a vehicle, which is an example of a wind direction adjusting device. The ventilator device 10 includes a case body 11 having a ventilation passage having a rectangular cross section,
A housing 20 that pivotally supports a plurality of rotating vertical blades 22, and a spacer 31 that is interposed between the case body 11 and the frame body 21.
And is attached to a vehicle instrument panel or the like in combination with a decorative frame (not shown).

The case body 11 is injection-molded with ABS resin or the like, has a rear opening 12 on the air-conditioning air inlet side, is connected to an air-conditioning duct (not shown), and has a front opening 14 on the air-conditioning air outlet side. A holding portion 16 for inserting and holding the spacer 31 is integrally formed on both side walls 14a of the expanding portion 15 having a circular cross section. The holding portion 16 is a flat portion 16 on the upper and lower sides.
a and 16b are formed, and an elevation surface portion 16c parallel to the side wall 14a of the expanding portion 15 of the case body 11 is provided between the flat surface portions 16a and 16b. The elevation surface portion 16c has a rectangular through hole 17a.
(Locking recess) is bored. A standing wall portion 16d is formed at the rearmost portion of the standing surface portion 16c.

The spacer 31 is a substantially rectangular plate body injection-molded from polyacetal resin or the like, and has a shaft hole 3 at the center thereof.
2 (shaft supporting portion) is bored, a boss 33 stands up in contact with the shaft hole 32 on the inner surface side of the plate body, and an inclined portion 3 is formed on the outer surface side.
An engagement protrusion 34 having 4a is provided in a protruding manner. An elastic portion 35 (biasing means) having an opening 37 on the rear end side of the plate body
Is formed, a protrusion 36 is provided at the tip of the elastic portion 35, and the elastic portion 35 can be elastically deformed toward the opening 37 by pressing the protrusion 36.

The housing 20 is a conventional wind direction adjusting member, and forms a frame 21 having a ventilation opening 21a whose front surface is curved. The housing 20 is molded separately from the frame 21 and has a knob at its center. The vertical blades 22, the horizontal blades 23 integrally formed on the front surface side of the frame body 21, and the rotary shafts 24 protruding from both side portions of the frame body 21. The vertical blades 22 may be formed integrally with the frame body 21.

To assemble the ventilator device 10, the spacers 31 are fitted to the rotary shafts 24 on both sides of the housing frame 21, and the spacers 31 are slidably fitted to the holding portion 16 of the case body 11 together with the housing 20 (see FIG. 3). At this time, as the inclined portion 34 a of the engaging projection 34 of the spacer 31 slides into contact with the end edge of the holding portion 16, the spacer 31 moves toward the frame 21.
The spacer 16 is pushed to the side and deformed, and the holding portion 16 is also pushed outward by the inclined portion 34a of the engaging projection 34 so that the spacer 3
Since the space between the first and second spacers 1 is opened, when the spacer 31 is further pushed in, the engaging projection 34 crosses the upright surface portion 16c of the holding portion 16 and engages with the rectangular through hole 17 (FIG. 2). At the same time, the elastic portion 3
The protrusion 36 of 5 abuts against the standing wall 16d of the holding portion 16 and the elastic portion 35 is deformed toward the opening 37 (FIG. 4).
Since 1 is biased in the forward direction (counter-insertion direction), as shown in FIG. 2, the engaging projection 34 comes into contact with the front edge of the rectangular through hole 17 to determine the position of the spacer 31 and cause backlash. Never.

Therefore, it is not necessary to form a pressing shape that abuts the spacer on the decorative frame, and when the decorative frame is injection molded, the mold structure is simple and the occurrence of sink marks is suppressed. In addition, even if the ventilator is carried into the vehicle body assembling process without being combined with the decorative frame or the like, the problem that the housing or the like comes off the ventilator does not occur.

Further, as described above, the assembling work of the housing is extremely easy because the spacer only has to be slidably fitted to the holding portion of the case body, and the engagement projection and the rectangular through hole are engaged during the work. Since it is possible to confirm that the parts have been assembled correctly, it is possible to eliminate variations in component mounting positions due to assembly errors.

In the above description, the mode in which the elastic portion is formed on the spacer has been described, but the same effect can be obtained even if the elastic portion is provided on the case body side.

[0019]

As described above, according to the present invention, since it is only necessary to slidably fit the spacer to the holding portion of the case body, the assembling accuracy and workability of the parts can be improved. Further, by biasing the spacer by the elastic portion, it is possible to improve the assembly accuracy of the parts and prevent the generation of abnormal noises, etc., and the accuracy of the parts such as the decorative frame is not required, so that the manufacturing cost is reduced. The quality can be reduced and the quality can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an airflow direction adjusting device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an operation explanatory view when the spacer of the airflow direction adjusting device is fitted.

FIG. 4 is an operation explanatory view of the same airflow direction adjusting device after the spacer is fitted.

FIG. 5 is an exploded perspective view of a conventional wind direction adjusting device.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is an exploded perspective view of another conventional wind direction adjusting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ventilator device (wind direction adjustment device) 11 Case body 16 Holding part 17 Rectangular through hole (locking concave part) 21 Frame body 21a Vent port 22 Wind direction blade 23 Wind direction blade 24 Rotating shaft 31 Spacer 32 Shaft hole (shaft support part) 34 Engagement Compound protrusion 35 Elastic part (biasing means)

Claims (1)

[Claims] 1. An air flow direction adjusting device in which rotating shafts provided on both sides of a frame body having a ventilation port are inserted into a shaft support portion of a spacer, and the frame body is housed in a case body through the spacer. In the case body, a holding portion for inserting the spacer is formed, an engaging projection is provided on one surface of the facing surface of the spacer and the holding portion, and the engaging projection is engaged on the other surface. And a biasing means for resiliently biasing the engaging projection in a direction opposite to the insertion direction of the spacer, provided in one of the spacer and the holding portion. Wind direction adjustment device.