JP2003226131A - Damper drive mechanism for heater control - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a damper drive mechanism for heater control capable of eliminating the loss of operating force and cable stroke and reducing the sliding resistance and cost by abolishing a conventional link in a pull-pull type heater control to be remotely controlled by two cables. <P>SOLUTION: In this damper drive mechanism for vehicular heater control comprising a damper 10 for adjusting the air quantity carried in a duct and a pulley 13 remotely controlled by a double-line type cable 14 for driving the damper 10, the shaft 19 of the damper 10 supported by a bearing 22 provided on the wall 21 of the duct is connected to the shaft 17 of the pulley 13 supported on a base 12 mounted on the wall 21 of the duct by fitting type connecting method. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater control damper drive mechanism. More specifically, the present invention relates to a heater control damper drive mechanism that is an improved damper drive mechanism in a heater control device used in a vehicle.

[0002]

2. Description of the Related Art Conventionally, a heater control device for a vehicle distributes a plurality of air blowing positions to, for example, a center register, a side register foot blowing, a defroster, etc. A damper is installed in the middle of the duct. As an example of a mechanism for driving this damper,
There is a so-called pull-pull type heater control in which a pulley is fitted from above the link and the pulley is remotely operated by two cables to drive a damper through the link.

[0003]

In the conventional damper drive mechanism of the pull-pull type heater control as described above, since the link is provided between the damper and the pulley, the rotation of the pulley is directly transmitted to the damper. Instead, it causes a loss of power. In addition, the presence of the link requires a gap for sliding, which causes a loss in the cable stroke. Further, since the number of parts is large, there are many sliding points, and as a result, the sliding force (operating force) becomes large. There is a problem such as.

In view of the above conventional problems, the present invention eliminates the loss of operating force and cable stroke by eliminating the conventional link in the pull-pull type heater control which is remotely operated by two cables. In addition, it is an object of the present invention to realize a heater control damper drive mechanism that can reduce sliding resistance and cost.

[0005]

In order to achieve the above object, the damper drive mechanism of the heater control according to claim 1 of the present invention is for controlling the damper 10 for adjusting the amount of air flowing through the duct and for driving the damper 10. In a damper drive mechanism for a heater control for a vehicle, which comprises a pulley 13 which is remotely operated by a double-track cable 14, the shaft 19 of the damper 10 supported by a bearing 22 provided on a wall 21 of the duct, and the duct of the duct. The shaft 17 of the pulley 13 supported by the pedestal 12 mounted on the wall 21 is connected by a fitting type connection method. According to a second aspect of the present invention, in the fitting connection method, one of the shaft 19 of the damper 10 and the shaft 17 of the pulley 13 is a shaft having a convex cross section, and the other is a shaft having a convex cross section. A fitting hole 20 having a shape is formed, and the fitting hole 2
It is characterized in that 0 is fitted to the shaft having a convex cross section. According to a third aspect of the present invention, the hole diameter of the damper bearing 22 provided in the wall 21 of the duct is set to the shaft 19 of the damper 10.
It is characterized in that it is made large so as not to contact. Further, in claim 4, the wall 21 of the duct and the pulley 13
It is characterized in that walls 24 and 25 for preventing air leakage are provided around the damper bearing 22 provided on the wall of the duct and between the pedestal 12 that supports the above.

By adopting this structure, since the conventional link is eliminated, loss of operating force and cable stroke is eliminated, and sliding resistance and cost can be reduced.

[0007]

1 is a diagram showing a first embodiment of a damper driving mechanism for a heater control according to the present invention, in which (a) is an exploded perspective view and (b) is an assembled sectional view.
In FIG. 1A, reference numeral 10 is a damper, 11 is a drive unit, and the drive unit 11 has a pedestal 12 rotatably supporting a pulley 13. The pulley 13 has a groove formed on its outer periphery. Cables 14a, 14 of the multi-wire cable 14
b is wound around and is locked by a cable end 15 in a locking hole 16 provided in the pulley 13.

Reference numeral 17 is a shaft integrally formed with the pulley 13, and a range of a predetermined dimension from the tip of the shaft 17 is formed in a substantially convex cross section. The damper 10 is a damper plate 18 that opens and closes an air passage.
And a shaft 19 for supporting the damper plate 18. The pulley 13 is attached to one end of the shaft 19.
A fitting hole 20 having a cross section corresponding to the substantially convex cross section is formed so that the shaft 17 can be fitted into the substantially convex cross section. The cross section of the substantially convex shape is not necessarily convex, and may be a prism or a half moon.

The damper and the driving portion thus formed are assembled as shown in FIG. That is, in the figure, reference numeral 21 is a wall of the duct, and a bearing 22 is formed on the wall 21, and the shaft 19 of the damper is rotatably supported by the bearing 22. Further, the drive unit 11 is installed on the wall 21 of the duct.
An engagement support portion 23 that supports the pedestal 12 is formed. Then, the pedestal 12 of the drive portion is engaged and supported by the engagement support portion 23, and at the same time, the substantially convex section of the shaft 17 of the pulley 3 is inserted into the fitting hole 20 of the shaft 19 of the damper 10.

In this embodiment having such a structure, the damper plate 18 is rotated via the shaft 19 of the damper 10 by rotating the pulley 13 by operating the double-line type cable by an operating portion (not shown). can do. Since the present embodiment that can be operated in this manner does not have the conventional link, the operation force becomes light. Further, since the number of parts is reduced, the cost can be reduced.

In the first embodiment, the pulley shaft 17 is convex and the damper shaft 19 is concave at the fitting portion between the pulley shaft 17 and the damper shaft 19, but this is shown in FIG. If the pulley shaft 17 is concave and the damper shaft 19 is convex as described above, the same effect can be obtained.

FIG. 3 is a view showing a second embodiment of the damper driving mechanism for the heater control of the present invention. The difference of the present embodiment from the first embodiment is that the damper bearing 22 provided on the duct wall 21 has a large hole diameter so that the damper shaft 19 does not contact. In this embodiment configured in this way, the bearing 22
Does not act as a bearing, and the bearing sliding part is only one part of the sliding part between the pedestal 12 and the shaft 17 of the pulley, so the operating force can be reduced.

Further, in the first embodiment, when the center of the shaft 17 of the pulley and the center of the hole of the shaft 19 of the damper deviate from each other, the operation force becomes heavy due to the twist, but in the second embodiment of the present invention. You can avoid it. The bearing 22
It is preferable that the diameter of the damper shaft 19 be controlled within the range of the design tolerance of the pedestal 12, the wall 21 of the duct, and the pulley 13.

The shaft 1 is used in the second embodiment.
9 and the bearing 22 do not come into contact with each other and there is no resistance, but the air flowing in the duct may leak from the bearing hole. In order to prevent this, the exploded perspective view of FIG. 4 (a) and FIG. 4 (b).
As shown in the assembled cross-sectional view of FIG.
This can be solved by providing ring-shaped windproof walls 24 and 25 which can be fitted to each other.

[0015]

According to the damper drive mechanism of the heater control of the present invention, in the pull-pull type heater control which is remotely operated by two cables, the loss of the operation force and the cable stroke is eliminated by eliminating the conventional link. It is possible to obtain a heater control damper drive mechanism that eliminates the above-mentioned problem and is capable of reducing sliding resistance and cost.

[Brief description of drawings]

1A and 1B are views showing a first embodiment of a damper drive mechanism of a heater control according to the present invention, in which FIG. 1A is an exploded perspective view and FIG. 1B is an assembled sectional view.

FIG. 2 is an exploded perspective view showing a modification of the first embodiment of the damper drive mechanism of the heater control of the present invention.

FIG. 3 is an assembled sectional view showing a second embodiment of the damper drive mechanism of the heater control of the present invention.

4A and 4B are views showing a modified example of the second embodiment of the damper drive mechanism of the heater control of the present invention, wherein FIG. 4A is an exploded perspective view and FIG. 4B is an assembled sectional view.

[Explanation of symbols]

10 ... Damper 11 ... Drive unit 12 ... Pedestal 13 ... Pulley 14 ... Double-track cable 14a, 14b ... Cable 15 ... Cable end 16 ... Locking hole 17 ... pulley shaft 18 ... Damper plate 19 ... Damper shaft 20 ... Fitting hole 21 ... Wall of the duct 22 ... Bearing 23 ... Engagement support part 24, 25 ... Wind leakage prevention wall

Continued front page    (72) Inventor Seifumi Kawashima             1-1, Showa-cho, Kariya city, Aichi stock market             Inside the company DENSO F-term (reference) 3J043 AA03 FA05 FB04                 3L011 CP01

Claims (4)

[Claims] 1. A pulley (1) remotely controlled by a damper (10) for adjusting the amount of air flowing through a duct and a double-wire cable (14) for driving the damper (10).
And a shaft (19) of a damper (10) supported by a bearing (22) provided on a wall (21) of the duct, and a wall (9) of the duct. 21) A damper drive mechanism for controlling a heater, characterized in that the shaft (17) of the pulley (13) supported by a pedestal (12) attached to the (21) is connected by a fitting type connection method. 2. The snap-fit connection method comprises a shaft (19) of a damper (10) and a shaft (1) of a pulley (13).
7) is used as a shaft having a convex cross section, and the other is provided with a fitting hole (20) having a shape corresponding to the shaft having a convex cross section, and the fitting hole (20) is used as the convex cross section. The damper drive mechanism of the heater control according to claim 1, wherein the damper drive mechanism is fitted to a character-shaped shaft. 3. The damper bearing (22) provided on the wall (21) of the duct has a larger hole diameter so that the shaft (19) of the damper (10) does not come into contact with the damper bearing (22). Alternatively, the heater control damper drive mechanism described in 2. 4. Wind leakage between a wall (21) of the duct and a pedestal (12) supporting the pulley (13) and around a damper bearing (22) provided on the duct wall. 4. The heater control damper drive mechanism according to claim 3, further comprising a prevention wall (24, 25).