JPH06143977A - Controlling part structure of heater control shaft - Google Patents

Abstract

PURPOSE:To surely provide the controlling sense to the heater control shaft by bringing a lower part of an elastic projecting part provided on the panel for heater control into contact with the heater control shaft, and providing a projecting part on the outer circumferential part of the heater control shaft at this contact part. CONSTITUTION:A pole 10 is pushingly pressed by a projecting part 14 of a heater control shaft 1 immediately before the pole 10 is fitted with a groove part 7 for controlling, and the rotational torque of the heater control shaft 1 is increased. When the pole 10 is fitted with the groove part 7 for controlling, the rotational torque is reduced to zero by the groove part 7 for controlling. When the heater control shaft 1 is rotated by a knob and the pole 10 is removed from the groove part 7 for controlling, the rotational torque is increased again, but a spring P to energize the pole 10 is detached from the projecting part 14 of the heater control shaft 1, and the rotational torque is immediately reduced and kept constant in the unchanged low condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moderation structure of a heater control shaft in a dial type heater control device used for switching the outlet of a heater of an automobile or switching the temperature control.

[0002]

2. Description of the Related Art A heater control lever provided on an instrument panel is moved up and down and left and right to open and close a damper connected to the lever as a structure for switching the outlet of a heater for an automobile and switching the temperature control. Many of these are designed to be used, but dial-type ones that rotate a knob instead of a lever are also used.

This dial type heater has a structure in which a driver presses a ball pressed by a spring as a dial type heater control shaft as a structure for obtaining a moderation when a driver operates the knob to rotate the heater control shaft. The moderation is obtained by fitting it into the hole provided on the side. Hereinafter, a dial type heater control shaft and a structure for obtaining a moderation feeling will be described.

In FIG. 11, 1 is a dial type heater control shaft, and 2 is a heater control panel 2 into which the heater control shaft 1 is inserted. An insertion hole 3 is provided in the heater control panel 2, and a bevel gear 4 is integrally attached to the tip end side of the heater control shaft 1 through which the insertion hole 3 is inserted (see also FIG. 12). Then, another bevel gear 5 meshes with the bevel gear 4. A cable (not shown) connected to, for example, a heater control damper (not shown) is connected to the other bevel gear 5.

In the case of the heater control shaft 1, the moderation feeling is that the moderation groove 7 is provided in the inner wall of the cylindrical body 6 extending to the end of the bevel gear 4 on the large diameter side. A ball 10 urged by a spring 9 mounted in the recess 8 of the heater control panel 2 is fitted and held (see also FIG. 13).

Further, as shown in FIG. 14, another bevel gear 5 meshed with the bevel gear 4 provided at the tip of the heater control shaft 1 is provided with a moderation groove portion 7 on the back surface thereof, and the moderation groove portion 7 is provided with the vehicle body fixing portion 11. There is also one in which a ball 10 urged by a spring 9 mounted in the concave portion 8 on the side is fitted to give a moderation feeling. In addition,
In FIG. 11, reference numeral 12 is a knob.

An operating lever device with a moderation mechanism is disclosed in Japanese Utility Model Publication No. 63-7528. What is disclosed in this publication is that a cable connected to a heater control damper is connected to an operation lever, a leaf spring having one end fixed to the operation lever is provided, and a protrusion provided on the free end side of the leaf spring. The part is locked in the hole of the shelf-shaped plate part to obtain a moderation feeling.

Further, as a moderation mechanism of an air conditioner control lever, there is one disclosed in Japanese Utility Model Laid-Open No. 62-43910. What is disclosed in this publication is a cable for connecting a heater control damper to a heater control lever, and the click feeling is related to the click groove attached to the lower part of the heater control lever. It was obtained by combining them.

[0009]

In the above-mentioned prior art, the moderation groove 7 is provided in the inner wall of the cylindrical body 6 extending at the large diameter end of the bevel gear 4, and the spring 9 is provided in the moderation groove 7. The heater control shaft 1 has a moderation feeling by fitting the ball 10 by the pressing force of. Therefore, as shown in FIG. 15, the rotation torque T of the heater alone remains constant while increasing, and decreases only in the moderation groove 7, and the heater control shaft 1 is rotated to cause the ball 10 to come out of the moderation groove 7. There was a characteristic that when it became high again.

That is, the spring 9 in the moderation groove portion 7
Even if the force is set to 0 kg, the pressing force of the spring 9 is applied to the inner wall portion of the cylindrical body 6 in portions other than the moderation groove portion 7. For this reason, the rotation torque T of the heater control shaft 1 is increased. If the rotational torque T of the heater control shaft 1 is constant as described above, it is not possible to absorb the variation in the operating force of the link system of the heater unit or the blower unit, which is the operated object connected to the bevel gear or the like, Since the uneven torque T is transmitted to the heater control shaft 1 as it is, the operation feeling may be deteriorated.

The operation lever device with a moderation mechanism disclosed in Japanese Utility Model Publication No. 63-7528 is provided with a leaf spring having one end fixed to an operation lever linked to a heater control damper, and the leaf spring is free. There is a protrusion provided on the end side that is locked in the hole of the shelf-shaped plate to obtain a moderation feeling, but when the protrusion is disengaged from the locking of the hole, the pressing force of the spring is Acts on the wall and does not solve the problem of the invention.

Further, the moderation mechanism of the air conditioner control lever disclosed in Japanese Utility Model Laid-Open No. 62-43910 is one in which a cable connected to a heater control damper or the like is connected to the heater control lever. The click spring attached to the lower part of the heater control lever is obtained by engaging it with the click groove provided on the click protruding piece.Therefore, if the click spring comes off the click groove, Since the pressing force acts on the click protruding piece, it does not mean that the problem of the present invention is solved.

The present invention has been made in order to solve the above-mentioned conventional problems. The elastic convex portion and the outer peripheral portion of the heater control shaft having the concave and convex portions are brought into contact with each other to reduce the rotational torque during normal rotation. Another object of the present invention is to provide a moderation part structure of a heater control shaft that provides a moderation feeling when fitted in the moderation groove and improves the operation feeling.

[0014]

As a means for solving the above problems, the present invention has a knob on one side and a gear portion on the other side in an insertion hole provided in a heater control panel of an automobile. By inserting the heater control shaft integrally provided, and by fitting the elastic projection provided on the heater control panel into the moderation groove provided on the gear part, the heater control shaft has a sense of moderation. In the moderation portion structure of the heater control shaft, the lower portion of the elastic protrusion provided on the heater control panel is brought into contact with the heater control shaft and the contact portion is projected to the outer peripheral portion of the heater control shaft. It is characterized in that a section is provided.

Further, a heater control shaft having a knob on one side and a gear portion integrally provided on the other side is inserted through an insertion hole formed in a heater control panel of an automobile,
A cutout piece is formed around a cylindrical body formed on the end surface of the gear portion, and a moderation groove portion is provided in the cutout piece, and an elastic convex portion provided on the heater control shaft is fitted into the moderation groove portion. The heater control shaft is characterized by giving a sense of moderation in its rotation.

[0016]

According to the present invention, with the above-described structure, when the feeling of moderation is not obtained, the rotational torque protrusions are located in front of and behind the moderation groove formed in the gear portion. When the shaft is rotated, the gear part is also rotated together with the heater control shaft, and it is possible to fit the elastic protrusion pressed by the protrusion of the heater control shaft into the moderation groove provided in the gear part. .

That is, when the elastic protrusion is fitted in the moderation groove, the elastic protrusion is pressed by the protrusion of the heater control shaft, so that the rotational torque of the heater control shaft is slightly increased. Next, when the elastic protrusion is fitted into the moderation groove, the moderation groove reduces the rotational torque to zero. In addition, when the heater control shaft is rotated with the knob to remove the elastic protrusion from the moderation groove, the rotation torque increases, but the elastic protrusion disengages from the protrusion on the heater control shaft, so the rotation torque immediately decreases. And kept constant. The rotational torque is kept low while the elastic protrusion is in contact with the inner wall of the gear.

Further, a dial type heater control shaft having a knob on one side and a gear portion integrally provided on the other side is inserted into an insertion hole provided in a heater control panel of an automobile, and an end surface of the gear portion is inserted. A notch piece was formed around the cylindrical body formed in, and the moderation groove was provided in this notch, and the elastic projection provided on the heater control panel was fitted into this groove, so hold the knob. When the heater control shaft is rotated, the gear part is also rotated together with the heater control shaft, so that the elastic protrusion provided on the heater control panel can be fitted in the moderation groove provided on the gear part.

That is, when the elastic projection is fitted in the moderation groove, the rotational torque is reduced, and the elastic projection is fitted in the moderation groove and the rotational torque is reduced to zero. Further, when the heater control shaft is rotated by holding the knob to remove the elastic convex portion from the moderation groove, the rotational torque increases when coming out of the moderation groove, but the rotational torque immediately decreases. The rotational torque is kept low and constant while the elastic protrusion is in contact with the inner wall of the gear portion.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 by assigning the same reference numerals to the same members as in FIGS. FIG. 1 shows the structure of the moderation portion of the heater control shaft 1. This is a cross-sectional view of the same heater control panel 2 as shown in FIG. 11 in which the heater control shaft 1 is inserted and the bevel gear 4 which is a gear portion is integrally attached to the other side.

A recess 8 is formed in the heater control panel 2.
(See FIG. 11) is formed, and a ball 10 biased by a spring 9 is disposed in this recess 8. The ball 10 and the spring 9 form an elastic protrusion. The lower part of the spring 9 has a substantially semicircular stroke pin 13
Is in contact with the heater control shaft 1 via.

A cam portion 14 is formed on the outer peripheral portion of the heater control shaft 1 where the heater control shaft 1 and the stroke pin 13 are in contact with each other (see enlarged FIG. 2). Five cam portions 14 are formed on the outer circumference of the heater control shaft 1.

A knob 12 is provided on one side of the heater control shaft 1 (see FIG. 11), and a bevel gear 4 is integrally attached to the other side (see also FIG. 11). A groove 7 for moderation is provided on the inner wall of a cylindrical body 6 extending to the end of the bevel gear 4 on the large diameter side, and a ball 10 urged by a spring 9 described above is fitted therein. .

Another bevel gear 5 (see FIG. 12) is also meshed with the bevel gear 4 described above. A cable (not shown) to which a heater control damper (not shown) is connected is attached to the other bevel gear 5. Then, the bevel gear 5 is operated by the rotation of the bevel gear 4.

In this embodiment, as described above, the lower portion of the spring 9 for biasing the ball 10 provided in the recess 8 of the heater control panel 2 is brought into contact with the heater control shaft 1 via the stroke pin 13, and Since five protrusions 14 are provided on the outer peripheral portion of the heater control shaft 1 in the contacted portion, if the heater control shaft 1 is rotated by holding the knob 12, the bevel gear 4 and The cylindrical body 6 rotates, and the protrusion 14 of the heater control shaft 1 and the ball 10 pressed by the spring 9 can be fitted into the moderation groove 7.

That is, immediately before the ball 10 is fitted in the moderation groove portion 7, the ball 10 is placed in the heater control shaft 1.
Since it is pressed by the projecting portion 14, the rotational torque of the heater control shaft 1 increases as shown in FIG. Next, when the ball 10 is fitted in the moderation groove 7, the moderation groove 7 reduces the rotational torque to zero.

Further, when the heater control shaft 1 is rotated by holding the knob 12 and the ball 10 is removed from the moderation groove 7, the rotation torque increases again, but the spring 9 for urging the ball 10 has the spring 9 for urging the heater control shaft 1. Since it is disengaged from the projecting portion 14, the rotational torque immediately decreases and is kept constant in a low state. Then, while the ball 10 is in contact with the inner wall of the bevel gear 4, the rotational torque T can be kept small.

In other words, the rotational torque T can be suppressed small except for the moderation groove portion 7. Further, the rotation torque T is increased from immediately before the moderation groove portion 7 to insert the ball 10 into the moderation groove portion 7 and rotate. It is possible to increase the torque T so that the ball 10 is ejected from the moderation groove portion 7 and to return to the low rotational torque T again.

Next, another embodiment will be described with reference to FIG. The same members as those in FIG. 1 are designated by the same reference numerals.
The feature of this embodiment is that the heater control shaft 15 for rotating the cylindrical body 6 of the bevel gear 4 is changed to a cam shape. On the outer periphery of the heater control shaft 15, the protrusion 14 is formed in the same manner as in the above-described embodiment.
Is provided (see also FIG. 5), the protrusion 14 is provided with a spring 9 and a ball through a semicircular stroke pin 13.
Touching 10.

Further, a cylindrical body 6 is extended at the end portion on the large diameter side of the bevel gear 4 provided integrally with the heater control shaft 15 (see FIG. 11), and a moderation groove portion 7 is formed on the inner wall portion of the cylindrical body 6. Is provided, and the ball 10 urged by the spring 9 described above is fitted therein.

In the above-described another embodiment, the lower portion of the ball 10 biased by the spring 9 provided on the heater control panel 2 is brought into contact with the cam-shaped heater control shaft 15, and at the contacted portion. Since the protrusion 14 is provided on the outer peripheral portion of the heater control shaft 15, it is possible to change the rotational torque T other than the moderation groove 7.

That is, when the heater control shaft 15 is rotated by holding the knob 12 (see FIG. 11), the bevel gear 4 is also rotated together with the heater control shaft 15, and the moderation groove portion provided in the cylindrical body 6 of the bevel gear 4 is rotated. 7 to 14
It becomes possible to fit the ball 10 pressed by the spring 9 or the spring 9.

That is, immediately before the ball 10 is fitted into the moderation groove portion 7, the ball 10 has a protrusion 14 on the outer periphery of the spring 9 and the cam-shaped heater control shaft 15 on the major axis side.
Is pressed by the heater control shaft
The rotation torque of 15 is slightly higher. Next, when the ball 10 is fitted into the moderation groove 7, the moderation groove 7 reduces the rotational torque.

Further, when the heater control shaft 15 is rotated by holding the knob 12 to remove the ball 10 from the moderation groove portion 7, the rotation torque becomes high, but the ball 10 comes off the protruding portion 14 of the heater control shaft 15. , Immediately, the torque decreases. And the ball 10 is the cylindrical body 6.
While the heater control shaft 15 is cam-shaped, the rotational torque T can be kept low while the rotational torque T is in contact with the inner wall portion thereof, while changing the rotational torque T.

FIG. 6 shows the above heater control shaft.
It shows the change of the rotation torque T when the 15 is rotated,
In the figure, the rotational torque T at the central portion is in the state shown in FIG. The rotational torque T on the left and right indicates that when the ball 10 is pressed by the protrusion 14 in the middle between the long diameter side and the short diameter side of the cam-shaped heater control shaft 15. The torque T indicates that when the ball 10 is pressed by the protruding portion 14 on the short diameter side of the cam-shaped heater control shaft 15.

Since the rotational torque T can be changed in this manner, it is possible to cancel the variation in the operating force of the heater control shaft 15 due to the variation in the link system of the heater unit and the blower unit.
In FIG. 6, the chain double-dashed line A indicates the operation force on the link side of the heater or the like.

Next, another embodiment of the invention will be described with reference to FIG. 7, in which the same members as those in FIG. 1 are designated by the same reference numerals. The feature of this embodiment is that the large-diameter side end of the bevel gear 4, which is a gear portion integrally provided on the heater control shaft 1 inserted through the insertion hole (see FIG. 11) of the heater control panel 2. A cutout piece 16 is formed along the circumference around the inner wall portion of the cylindrical body 6 extending in the section, and a moderation groove portion 7 is formed in the cutout piece 16.

Next, the operation of this embodiment will be described. Insertion hole 3 provided in the heater control panel 2 of the automobile
, A heater control shaft 1 in which a knob is provided on one side and a bevel gear 4 in which a cylindrical body 6 is extended is integrally provided on the other side.
And a cutout piece 16 is formed around the cylindrical body 6 to form a moderation groove portion 7 in the cutout piece 16, and a spring 9 provided in the concave portion 8 of the heater control panel 2 is attached to the moderation groove portion 7. Since the biased ball 10 is fitted, when the heater control shaft 1 is rotated by holding the knob 12, the cylindrical body 6 is also rotated together with the heater control shaft 1,
It becomes possible to fit the ball 10 provided in the heater control panel 2 into the moderation groove portion 7 provided in the cutout piece 16 of the cylindrical body 6.

That is, when the ball 10 is fitted in the moderation groove portion 7, the notch piece 16 is pushed outward by the urging force of the spring 9, and the rotational torque T is gradually reduced to move the ball 10 into the moderation groove portion 7. The rotation torque T becomes zero at that time. That is, the place where the knob 12 naturally stops is the moderation groove portion 7.

Further, when the heater control shaft 1 is rotated by holding the knob 12 to remove the ball 10 from the moderation groove portion 7, the rotational torque T temporarily increases, but the rotational torque T immediately decreases. Then, while the ball 10 is in contact with the inner wall of the cylindrical body 6 and is moving, the clicking sound of the ball 10 can be eliminated.

[0041]

As described above, according to the present invention, the lower portion of the elastic convex portion provided on the heater control panel is brought into contact with the heater control shaft, and the protruding portion is provided on the outer peripheral portion of the heater control shaft at the contact portion. Since it is provided, if the heater control shaft is rotated by holding the knob, the gear part rotates together with the heater control shaft, and the elastic projection pressed by the protrusion part of the heater control shaft is inserted into the moderation groove provided in the gear part. The parts can be fitted together.

As a result, the heater control shaft can surely have a moderation feeling. Further, it is possible to eliminate the fluctuation of the operating force of the heater control shaft due to the variation of the operating force of the link system of the heater unit or the blower unit. Further, by changing the shape of the protruding portion, it is possible to obtain the practically optimum operation filling.

Further, a cylinder formed on the end face of the gear portion is inserted through a heater control shaft having a knob on one side and a gear portion integrally provided on the other side in an insertion hole provided in a heater control panel of an automobile. Since a cutout piece was formed around the body and a groove for moderation was provided in this cutout piece, and an elastic projection provided on the heater control panel was fitted into this groove, the heater control shaft was rotated by holding the knob. When moving, the gear part rotates together with the heater control shaft, and the elastic convex part provided on the heater control panel can be fitted into the moderation groove part provided on the gear part. As a result, the portion where the heater control shaft stops naturally becomes a moderation groove portion, and a smooth moderation feeling is surely obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the heater control shaft shown in FIG.

FIG. 3 is a characteristic diagram of rotational torque when the one shown in FIG. 1 is operated.

FIG. 4 is a sectional view showing another embodiment of the present invention.

5 is a cross-sectional view of the heater control shaft shown in FIG.

FIG. 6 is a characteristic diagram of rotational torque when the one shown in FIG. 4 is operated.

FIG. 7 is a perspective view showing an embodiment of another invention.

FIG. 8 is a cross-sectional view showing a ball fitted to the one shown in FIG.

9 is a cross-sectional side view showing a ball fitted to that of FIG. 7. FIG.

FIG. 10 is a characteristic diagram of rotational torque when the one shown in FIG. 8 is operated.

FIG. 11 is a perspective view illustrating a heater control shaft.

FIG. 12 is a cross-sectional view of a conventional heater control shaft.

13 is a vertical cross-sectional view of the one shown in FIG.

FIG. 14 is a cross-sectional view of another conventional device.

FIG. 15 is a characteristic diagram of rotational torque when the one shown in FIG. 13 is operated.

[Explanation of symbols]

 1 Heater Control Shaft 2 Heater Control Panel 3 Insertion Hole 4 Bevel Gear 6 Cylindrical Body 7 Moderation Groove 9 Spring 10 Ball 12 Knob 14 Projection 15 Heater Control Shaft 16 Notch Piece

Claims (2)

[Claims] 1. A moderation provided on the gear part of a vehicle, wherein a heater control shaft having a knob on one side and a gear part integrally provided on the other side is inserted into an insertion hole provided in a heater control panel of the automobile. In the structure of the moderation part of the heater control shaft, the elastic convex part provided on the heater control panel is fitted into the groove for operation to give a moderation feeling to the rotation of the heater control shaft. The structure of the moderation part of the heater control shaft, characterized in that the lower part of the elastic projection provided on the heater control shaft is brought into contact with the heater control shaft, and a protrusion is provided on the outer peripheral part of the heater control shaft at the contacted part. 2. A heater control shaft having a knob on one side and a gear portion integrally provided on the other side is inserted into an insertion hole formed in a heater control panel of an automobile, and is formed on an end surface of the gear portion. A cutout piece is formed around the cylindrical body, and a moderation groove portion is provided in the cutout piece, and an elastic projection provided on the heater control shaft is fitted into the moderation groove portion to rotate the heater control shaft. The moderation part structure of the heater control shaft according to claim 1, wherein a moderation part is provided.