JPH08295126A - Dial installation structure of air-conditioning blowout port for automobile - Google Patents

Abstract

PURPOSE: To provide dial installation structure in which a dial can be attached in a single operation, opening regulation of a dumper can surely be performed, and also weighting is easily applied. CONSTITUTION: This dial installing structure is composed of a dial bearing 40 which consists of a central shaft and a tubular holder 42 concentric to the central shaft provided at a specific position of a retainer housing a damper 34; and a tubular shaft 52 formed at the boss of the central shaft, and allowable to insert to a ring groove between the central shaft and the tubular holder 42. A regulating groove 44 to regulate the opening of the damper 34 making the central shaft as the center within a specific angular scope, and projections 41a and 41b directing to both ends 44a and 44b of the regulating groove 44 are provided to the central shaft, while a bending piece 55 having a stopper pawl 53 engageable to the regulating groove is formed to the tubular shaft 52, so as to prevent the bending of the bending piece 55 in the operation of the dial.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dial for opening and closing a damper in an air conditioning outlet for an automobile, and more particularly to a dial mounting structure for mounting the dial.

[0002]

2. Description of the Related Art Conventionally, a dial 12 for opening and closing a damper in an air-conditioning outlet for an automobile of this type is shown in FIG.
And the installation panel 1 as shown in FIG.
Is rotatably attached to one side of the retainer 2 which is attached to a predetermined position of the retainer 2, and the barrel 4 is interposed between the left and right side frames 2a and 2b on the outlet opening 3 side of the retainer 2 via a support shaft 5. A plurality of horizontal fins 6 are attached to the front side of the barrel 4, and a plurality of vertical fins 7 are rotatable on the upper and lower sides of the upstream side of the horizontal fins 6. It is mounted so that it can be changed in wind direction by being connected in series through a connecting rod 8. Thus, the damper 9 is openably and closably mounted between the side frames 2a and 2b on the upstream side of the retainer to which the barrel 4 is mounted.

One shaft portion 9a of the damper 9 is a side frame 2
The other shaft portion 9b is pivotally attached to a, and the other shaft portion 9b is fitted to the bearing portion 10a of the damper operating member 10 rotatably attached to the side frame 2b, and the fan gear 10b is integrally formed on the bearing portion 10a. The fan-shaped gear 10b is meshed with and connected to the fan-shaped gear 15 of the dial 12 for operating the damper.

The dial 12 is a side frame 2b of the retainer 2.
Is rotatably attached to a support shaft 11 provided at a predetermined position near the front of the dial 12. A boss portion 13 is formed in the center of the dial 12, and the boss portion 13 is concentrically formed with a circle. An arc-shaped operating portion 14 is formed, and a fan gear 15 that meshes with and communicates with the fan gear 10b of the damper operating member 10 is formed on the boss portion 13. The fan gear 15 has a circle for restricting rotation of the dial 12. An arcuate restriction groove 15a is formed. The boss portion 13 formed in this way is fitted with a shim 16 which is fitted onto the support shaft 11 to output a load, and the boss portion 13 is fitted onto the support shaft 11 via the shim 16. The lock pin 2c is locked by the chrysanthemum washer 17 and is locked in the lock groove 15a.
Is inserted. Incidentally, as shown in FIG. 16, the dial 12 is assembled by fitting the boss portion 13 onto the support shaft 11,
There is also a configuration in which a spring washer 18 is attached by a tapping screw 19 instead of the load-out shim 16.

However, in the conventional dial 12 assembling structure, the shim 16, the chrysanthemum washer 17, the spring washer 18, and the tapping screw 19 are required, which causes a problem of high cost and a large number of assembling man-hours. Since the mounting positions of the operation portion 14 and the fan-shaped gear 15 with respect to the boss portion 13 of 12 are not different from each other on the front and back sides, mis-assembly is apt to occur, and the regulating pin 2c for regulating the dial 12 must be provided on the retainer 2 side. is there. In addition, dismounting and re-assembling cannot be performed by the retaining lock with the chrysanthemum washer 17, and there is a risk of rattling when assembled at an angle. Therefore, there is a mounting structure shown in FIGS. 17 and 18 in order to solve these problems.

The dial 25 is attached to the retainer 20.
At the mounting position of the dial 25 of the side frame 20a of the
1 is formed, and the mounting seat 21 is formed with a slit groove 24 having a predetermined diameter in the diametrical direction.
2 is formed in a bifurcated shape, and locking claws 23 are formed on the tip end side of the separation shaft 22. Also, dial 25
A boss portion 26 having a fitting hole 27 that fits into the separation shaft 22 is formed at the center of the, and an operation portion 28 is formed concentrically with the boss portion 26. An operating lever 28 is formed which is connected to a lever of a damper operating member (not shown) attached to the shaft portion 9b.
The dial 25 thus provided is externally fitted to the separation shaft 22 through the fitting hole 27 and locked by the locking claw 23 so as not to come off. Has been done.

[0007]

However, the boss portion 26 is fitted to the separating shaft 22 formed on the retainer 20 to prevent the dial 25 from coming off by the locking claws 23, and the load of the dial 25 due to the elastic performance of the separating shaft 22. However, since the separation shaft 22 is bent when an operating force is applied to the dial 25, the locking claw 23 is changed over time.
However, there is a problem that it may be deformed or fallen off due to breakage of the shaft or thermal brittleness of the separation shaft 22. The present invention has been made in order to solve the problems caused by the mounting configuration of the dials 12 and 25 described above, the dials can be assembled with one touch, and the damper opening degree can be surely regulated. It is another object of the present invention to provide a dial mounting structure for an air conditioning blowout port for an automobile, which is capable of easily outputting a load.

[0008]

SUMMARY OF THE INVENTION The present invention is a dial mounting structure for operating a damper opening of an air conditioning outlet for an automobile, in which a central shaft and a central shaft are provided at predetermined positions of a retainer accommodating the damper. A dial shaft portion formed of a concentric tubular holding portion, and a tubular shaft portion formed in the boss portion of the dial and insertable into a ring groove between the central shaft and the tubular holding portion, The tubular hold portion is provided with a regulation groove within a predetermined angle range that regulates the opening degree of the damper about the central axis, and the tubular shaft portion is provided with a stopper claw capable of engaging with the regulation groove. In addition to forming a piece, the central shaft is provided with projections directed to both ends of the restriction groove so as to prevent bending of the bending piece during operation of the dial. Groove and stopper And a regulating concave portion corresponding to the regulating groove is formed in any one of the cylindrical hold portion and the boss portion, and a regulating convex portion is provided on the other side and is arranged in parallel with the regulating groove. In addition, the dial mounting structure for an air conditioning outlet of an automobile has a structure in which a shim for discharging a load is interposed between the dial bearing portion and the dial.

[0009]

With the above structure, the dial bearing portion and the dial can be attached with one touch, the damper opening can be accurately performed, and a stable operation load and a good feeling can be obtained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a side view of an automobile air conditioning outlet 31, FIG. 2 is a horizontal sectional view of FIG. 1, and FIG. 4 is a perspective view of the dial mounting portion, and FIG. 4 is a sectional view of the dial mounting portion. The air conditioning outlet 31 is provided with a barrel 33 similar to the conventional one on the outlet opening side of the retainer 32, and on the upstream side. A damper 34 is rotatably supported on the center line C of the retainer 32 between the side frames 32a via a shaft portion 34a, and a damper actuating member 35 is attached to the coaxial portion 34a.

The damper actuating member 35 comprises a mounting boss portion 36 which is fitted onto the shaft portion 34a and an operating lever 37 which extends from the mounting boss portion 36 by a predetermined length. A groove 38 is provided so as to extend therethrough, and is connected to the dial 47 through the operating groove 38.

The dial 47 is attached to a dial bearing portion 40 formed to project at a predetermined position on the center line C of the side frame 32a on the outlet opening side of the retainer 32. The dial bearing portion 40 is shown in FIG. As shown in FIG.
A hollow columnar central shaft 41 having a predetermined diameter and a predetermined length is provided at the center thereof, and a cylindrical hold portion 42 having a predetermined diameter concentrically around the central shaft 41 is provided on the outer periphery thereof.
A ring groove 43 is formed between the central shaft 41 and the cylindrical holding portion 42 so as to insert the cylindrical shaft portion 52 of the dial 47 into the insertion shape at a predetermined interval.

The cylindrical hold portion 42 has a predetermined height h, and a center portion in the height direction thereof has a width h / 3 within a predetermined angle α with respect to the center line C (see FIG. 3). Damper 34
A restriction groove 44 for restricting the opening / closing angle range is opened, and an outer guide piece 45a and a base guide piece 45b are formed. Further, at a predetermined position of the outer guide piece 45a of the regulation groove 44, an insertion groove 46 having a predetermined width is formed obliquely from the upper edge thereof toward the regulation groove 44. Also, the central shaft 41
At a distribution position of a predetermined angle with respect to the center line C on the base side of the dial, that is, at a position corresponding to both end portions 44a and 44b of the regulation groove 44, a bending piece of the dial 47 from the base portion to a position substantially above the regulation groove 44. Protrusion 4 for preventing bending during operation of 55
1a and 41b are formed. A dial 47 is rotatably attached to the dial bearing portion 40 thus formed.

The dial 47 has a boss portion 48 having a fitting hole 48a formed in the central portion, and is substantially concentric with the boss portion 48. And a connection convex portion 51a that slidably fits into the operation groove 38 of the damper operation member 35 at a predetermined angle with respect to the center line A of the operation portion 49 at a predetermined position of the boss portion 48. A lever 51 is formed (see FIG. 5). The boss portion 48 of the dial 47 is formed with a cylindrical shaft portion 52 that is rotatably mounted in the ring groove 43 of the dial bearing portion 40.

This tubular shaft portion 52 is inserted into the ring groove 43 of the dial bearing portion 40, that is, between the tubular hold portion 42 and the projections 41a and 41b of the central shaft 41, and is rotatable so as to have a cylindrical shape having a length h. A stopper claw 53 is formed on the tubular shaft portion 52 at an angular position close to the center line A of the operating portion 49 so as to be fitted into the restriction groove 44 of the dial bearing portion 40. Slit grooves 54 are formed at predetermined angular positions on both sides of the center, and bending pieces 55 are formed between the slit grooves 54. It should be noted that the slit groove 54 has a length of about 2 from the end of the cylindrical shaft portion 52 having the length h.
It is formed to have a length of about ⅓, and the actual cylindrical portion is present on the base side.

In the dial 47 thus formed, the stopper claw 53 formed on the cylindrical shaft portion 52 is inserted into the insertion groove 4.
The bending piece 55 is elastically displaced when it is inserted along the line 6, and is elastically restored when passing through the insertion groove 46 so that the stopper claw 53 is engaged with the restriction groove 44. Then, the damper 34 and the dial 47 are connected by engaging the connecting convex portion 51a of the connecting lever 51 with the operating groove 38 of the operating lever 37 of the damper operating member 35.

With the dial 47 and the damper actuating member 35 connected in this manner, as shown in FIG.
7 is operated to operate the stopper claw 53 so that the restriction groove 4
4, the damper 34 is held at a position for closing the retainer 32 when it comes into contact with the end portion 44a of the No. 4, and when the stopper claw 53 comes into position b where it comes into contact with the end portion 44b of the regulation groove 44, the damper 34 comes to rest. Is configured to be held at a position where it is fully opened, and is provided so as to adjust the opening degree of the damper 34 between the positions a and b.

Since the dial mounting structure of this embodiment is constructed as described above, the tubular shaft portion 52 of the dial 47 is inserted in the dial bearing portion 40.
The outer periphery of is fitted into the cylindrical hold portion 42 so as to be slidably contacted and rotated, and the projections 41a and 41b formed on the central shaft 41 are in contact with the inner peripheral surface side in the range of the restriction groove 44. Since the dial 47 is assembled in this manner, the cylindrical shaft portion 52 is provided on the assembly side of the boss portion 48, and the stopper claw 53 of the bending piece 55 is inserted into the insertion groove 46 of the cylindrical holding portion 42. Since the stopper claw 53 is engaged with the restriction groove 44 by being pushed in along with, the assembling can be easily performed with one touch, and erroneous assembling work can be eliminated. In addition, the stopper claw 5 that is engaged with the restriction groove 44
Since 3 also functions as a rotation restriction, it is not necessary to provide a special dial stopper. In particular, almost the entire circumference of the cylindrical shaft portion 52 is inscribed in the cylindrical hold portion 42 and rotated, so that a stable operation load can be obtained. Further, since the protrusions 41a and 41b are formed so as to project on the central shaft 41 side substantially corresponding to the both ends 44a and 44b of the restriction groove 44, an external force acts on the dial 47 at both ends 44a and 44b. Also, the projections 41a and 41b prevent the flexure piece 55 from flexing, and the stopper claw 53 causes the cylindrical hold portion 4 to move.
Since it does not ride on the inner peripheral side of 2, dial 47
It is possible to prevent the disengagement of the dial 47 and to reliably regulate the rotation of the dial 47, and to prevent the stopper claw 53 and the bending piece 55 from being damaged.

FIGS. 6 and 7 show a structure in which the rotation restriction is surely carried out, so as to be juxtaposed with the restriction groove 44. For example, the upper end side of the cylindrical holding portion 42 corresponds to the restriction groove 44. A restriction recess 56 is provided in the angular range α, and a restriction projection 57 that engages with the restriction recess 56 and is rotationally restricted is provided at the outer peripheral base of the tubular shaft portion 52 of the dial 47. Thus, the rotation regulation can be made more reliable. The formation of the regulation concave portion 56 and the regulation convex portion 57 may be reversed.

Next, FIG. 8 and FIG. 9 show another mounting structure of the dial mounting structure. This dial mounting structure has a structure for giving a sufficient load output in the dial operation and is provided on the retainer 32 side. Dial bearing section 40
The shim 61 is interposed between the dial 47 and the dial 47. The central shaft 41 is formed longer by the thickness of the shim 61 to insert the shim 61.
A detent recess 42a for detenting the shim 61 is provided in a diametrical direction at a predetermined position on the upper edge. Also on the dial 47 side, the cylindrical shaft portion 52 is formed longer by the thickness of the shim 61, and the other configurations are formed in the same manner as described above.

The shim 61 interposed between the dial bearing portion 40 and the dial 47 is made of a soft and elastic synthetic resin material and has a predetermined thickness and an outer diameter of the cylindrical hold portion 42. The outer diameter is substantially the same, and the inner diameter is formed in a ring shape having a diameter that allows the cylindrical shaft portion 52 to be inserted and fitted. A rotation stopping convex portion 62 that fits into the stop concave portion 42a is formed, and an insertion groove 61a that is aligned with the insertion groove 46 and that inserts the stopper claw 53 is formed correspondingly. The shim 61 formed in this manner is inserted into the dial bearing portion 40 in a state of being fitted onto the tubular shaft portion 52 of the dial 47 in the same manner as described above, and the detent protrusion 62 is provided around the tubular hold portion 42. The shim 61 is elastically compressed and attached by fitting the stopper claw 53 into the restriction groove 44 while fitting the shim 61 into the stopper recess 42a. This allows sim 6
Reference numeral 1 is in close contact with the dial 47 surface, the upper edge surface of the cylindrical hold portion 42, and the outer periphery of the base of the cylindrical shaft portion 52 to obtain a predetermined stable operation load and a good operation feeling. The same effects as the above are achieved.

Next, FIGS. 10 to 13 similarly show a structure for applying a load. In this case, on the dial bearing portion 40 side, a substantially triangular shape is formed in the diameter direction on the base side of the central shaft 41. A reinforcing rib 41c having a holding portion for the shim 66 is formed on the tip side. Further, on the dial 47 side, on the boss portion 48 side which is the bottom portion of the tubular shaft portion 52, as shown in FIGS. 12 and 13, a small diameter portion 64a and a large diameter portion 64b, which are concentric with the fitting hole 48a and have a predetermined diameter, are provided. A fitting concave portion 63 having a substantially convex cross section is formed, and the large diameter portion 64b is aligned with the inner diameter base portion of the tubular shaft portion 52.
In the diametrical direction of 4b, a detent convex portion 65 having a detent surface 65a arranged in parallel is formed. The shim 66 fitted and fixed to the bottom portion formed in this way is made of a synthetic resin material which is soft and elastic like the shim 61.
The shim 66 includes a convex portion 67 that is fitted into the small diameter 64a of the fitting concave portion 63 and a flange portion 68 that can be fitted into the large diameter portion 64b.
And the flange portion 68 is formed on the bottom rotation preventing surface 6
Correspondingly split circles for fitting between 5a and rotation stop surface 6
9 is formed, and the center axis 41 is formed in the center of the shim 66.
An insertion hole 70 for inserting and fitting is inserted. The diameter of the insertion hole 70 is slightly smaller than the diameter of the central shaft 41. When the shim 66 formed in this manner is fitted and fixed in the rotation preventing convex portion 65 of the fitting concave portion 63, the insertion hole 70 is substantially aligned with the fitting hole 48 a of the boss portion 48. The dial 4 with the shim 66 fitted and fixed in this way
7, the cylindrical shaft portion 52 is inserted into the dial bearing portion 40 and the stopper groove 53 of the cylindrical hold portion 42 is engaged with the stopper pawl 53, so that the insertion hole 70 of the shim 66 is formed in the central shaft 41. By being closely attached to the outer circumference, a predetermined stable operation load and a good operation feeling can be obtained, and at the same time, the same effect as the above can be obtained.

[0023]

As described above, according to the present invention, the dial is assembled by providing the cylindrical shaft portion on the assembly side of the boss portion, and the stopper claw of the bending piece is inserted into the cylindrical hold portion. Since the stopper claw is engaged with the restriction groove by pushing along the groove, the assembling can be easily performed with one touch, and erroneous assembling work can be eliminated. Also,
Since the stopper claw engaged with the restriction groove also functions as the rotation restriction, it is not necessary to provide a special dial stopper. In particular, since a substantially entire circumference of the tubular shaft portion is inscribed in the tubular holding portion and rotated, a stable operation load can be obtained. Further, since the protrusion is formed so as to project toward the central shaft side substantially corresponding to both ends of the restriction groove, even if an external force acts on the dial at both ends of the restriction groove, the protrusion bends due to this protrusion. Since the stopper claws are prevented from climbing up to the inner peripheral surface side of the cylindrical holding portion, the dial can be prevented from coming off, and the dial can be reliably regulated for rotation. It is possible to prevent the claw and the bending piece from being damaged. Further, by providing a shim between the dial bearing portion and the dial, a stable operation load and a good operation feeling can be obtained.

[Brief description of drawings]

FIG. 1 is a side view of a vehicle air conditioning outlet.

FIG. 2 is a horizontal sectional view of the same.

FIG. 3 is an exploded perspective view of a dial mounting portion.

FIG. 4 is a sectional view of a dial mounting portion.

FIG. 5 is an explanatory diagram of a dial operation.

FIG. 6 is a cross-sectional view of another dial mounting portion.

FIG. 7 is an exploded perspective view of the dial mounting portion of FIG.

FIG. 8 is a cross-sectional view showing a state in which a shim is interposed in the dial mounting portion.

FIG. 9 is an exploded perspective view of FIG.

FIG. 10 is a cross-sectional view showing a state in which another shim is interposed in the dial mounting portion.

11 is an exploded perspective view of FIG.

FIG. 12 is a perspective view showing a state in which the shim and the tubular shaft portion of the dial are inverted.

FIG. 13 is a plan view in which the shims are fitted in the state of FIG.

FIG. 14 is a horizontal sectional view of a conventional vehicle air conditioning outlet.

FIG. 15 is a side view of the dial mounting portion of FIG.

FIG. 16 is a cross-sectional view of another mounting mode of the conventional dial.

FIG. 17 is a cross-sectional view of another mounting mode of the conventional dial.

FIG. 18 is an exploded perspective view of FIG.

[Explanation of symbols]

 31 Air-conditioning outlet for vehicle 32 Retainer 34 Damper 40 Dial bearing part 41 Central shaft 41a, 41b Projection 42 Cylindrical hold part 43 Ring groove 44 Restriction groove 44a, 44b End part of restriction groove 47 Dial 52 Cylindrical shaft part 53 Stopper claw 55 Bending Piece 56 Restricting Recess 57 Restricting Convex 61, 66 Shim

Claims (3)

[Claims] 1. A dial mounting structure for operating a damper opening of an air conditioning outlet for an automobile, comprising: a central shaft at a predetermined position of a retainer accommodating the damper; and a cylindrical holding portion concentric with the central shaft. And a tubular shaft portion that is formed in the boss portion of the dial and that can be inserted into a ring groove between the central shaft and the tubular hold portion.
The tubular hold portion is provided with a regulation groove within a predetermined angle range that regulates the opening degree of the damper about the central axis, and the tubular shaft portion is provided with a stopper claw capable of engaging with the regulation groove. A mounting of a dial for an air-conditioning outlet for an automobile, in which a protrusion is formed on both ends of the regulation groove on the central shaft to prevent the bending of the bending piece during operation of the dial. Construction. 2. The regulating groove and the stopper claw are arranged in parallel to form a regulating concave portion corresponding to the regulating groove in any one of the cylindrical hold portion and the boss portion, and a regulating convex portion in the other. The dial mounting structure for an automobile air conditioning outlet according to claim 1, wherein the dial mounting structure is provided so as to be provided in parallel with the regulation groove. 3. The dial mounting structure for an automobile air-conditioning outlet according to claim 1 or 2, wherein a shim for loading a load is interposed between the dial bearing portion and the dial.