JPH078250Y2 - Air conditioning operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to an air conditioning operating device for controlling opening / closing of a damper of an air conditioning device via a wire cable by operating an operating knob.

<< Prior Art >> Conventionally, there is an air conditioner operation device in which a damper of an air conditioner of a vehicle is opened and closed by rotating an operation knob provided on a dashboard portion near a driver's seat via a wire cable.

This kind of air-conditioning operating device is provided with a rotatable rotary shaft, for example, on a dashboard part, and this rotary shaft is provided with a rotary knob at one end on the vehicle interior side and a bevel gear at the other end. Is engaged with a fan-shaped bevel gear with a relatively large swing radius that is swung by its rotation. One end of the wire cable is attached to the center of the swing end of the fan-shaped bevel gear at the swing angle. The connection is made along the tangential direction over the entire range. Therefore, when the operation knob is rotated, the fan-shaped bevel gear oscillates as compared with the amount of rotation, and the wire cable also oscillates with respect to the fan-shaped bevel gear. Since they are connected to each other along the substantially tangential direction with respect to the entire angular range, they are linearly expanded / contracted substantially in proportion to the rotation amount of the operation knob.

<Problems to be solved by the device> However, if the expansion / contraction amount of the wire cable is linearly proportional to the rotation amount of the operation knob, for example, the air mix damper that adjusts the mixing amount of warm air and cold air with this wire cable. When the opening degree is controlled, it becomes difficult to finely adjust the temperature of the blown air near both ends of the rotation range of the operation knob (near the full cold position and the full hot position). (In the vicinity of the full cold position and the full hot position, the temperature change is large with respect to the opening change of the air mix damper.) Therefore, conventionally, the opening of the air mix damper with respect to the amount of expansion and contraction of the wire cable on the side of the air mix damper is set. Although a non-linear link mechanism is provided to facilitate the fine adjustment of temperature, there is a problem that the link mechanism becomes complicated and the manufacturing cost of the air conditioner increases.

On the other hand, in the vehicle rocking operation force transmission device of Japanese Utility Model Publication No. 54-58593, a plate provided with an arcuate groove is arranged in parallel inside the panel so as to face the panel and outside the panel. A rotary operation knob is arranged, the operation knob and the plate are directly connected by a shaft, and a pin is provided at one end of the lever to slidably support the pin in the groove of the plate. A wire may be connected to the other end of the lever and the wire may be connected to an operation object such as a damper that switches an air passage, and the operation object may be operated by linearly moving the wire by rotating the operation knob. What has been done is disclosed. In this publication, by forming the groove in an arc shape having a non-linear characteristic, it becomes easy to finely adjust the temperature of the blown air near both ends of the rotation range of the operation knob.

However, it is difficult to form an arcuate groove having a non-linear characteristic in the plate, there is room for improvement in productivity, and there is a problem that the processing cost is high.

The present invention has been made in view of the above-mentioned conventional problems, and in controlling the opening and closing of the damper of the air conditioner via the wire cable by operating the operation knob, the expansion and contraction of the wire cable with respect to the operation amount of the operation knob. An object of the present invention is to provide a low-cost air-conditioning operating device with high productivity that can provide non-linearity in quantity.

<< Means for Solving Problems >> In order to achieve the above object, in the present invention, in the air-conditioning operation device for opening and closing a damper of an air-conditioning device via a wire cable in accordance with an operation amount of an operation knob, the wire is used. The cable is connected to a swingable link lever, and a long hole is formed in the link lever along its longitudinal direction.
A pin that is rotated around a position different from the swing center of the link lever according to the operation amount of the operation knob is engaged with the elongated hole.

<< Operation >> According to the air-conditioning operation device having the above-described configuration, when the pin is rotated in accordance with the operation amount of the operation knob, the pin slides in the long hole of the link lever and engages with the same to move the link lever. The wire cable is swung, whereby the wire cable is expanded and contracted, and the damper is opened and closed through this. At this time, since the center of swing of the link lever and the center of rotation of the pin are displaced, the line connecting the pin and the center of swing of the link lever coincides with the line connecting the pin and its center of rotation. In the vicinity, the swing angle amount of the link lever is approximately linearly proportional to the rotation angle amount of the pin. Further, in the portion where the crossing angle of the two lines becomes large, the swing angle amount of the link lever is decreased or increased with respect to the rotation angle amount of the pin. That is, when the distance between the pivot center of the link lever and the pin is large with respect to the turning radius of the pin, the distance is reduced, and conversely, the distance is increased. Therefore, by this, the amount of expansion and contraction of the wire cable with respect to the operation amount of the operation knob can be made non-linear.

In addition, since the elongated hole formed in the link lever along the longitudinal direction may be formed linearly, the machining is easy and the productivity is good, and the production cost can be reduced.

<< Embodiment >> A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows the air conditioning operating device of the present invention seen from the back side of the dash panel, and FIG. 2 shows a side sectional view of FIG.

As shown in FIG. 1 and FIG. 2, a support pair 3 for supporting the rotary shaft 2 is attached to the back side of the dash panel 1 near the driver's seat via a fitting 1a. One end of the rotary shaft 2 is projected from the driver's seat panel 1 into the vehicle compartment, and an operation knob 4 for adjusting the cooling / heating temperature is attached to this one end. A disc 6 is fixed to the other end of the rotary shaft 2, and a pin 5 eccentric to the rotary shaft 2 is provided on the disc 6 so as to project.

On the other hand, the support body 3 is provided with a link lever 8 which is swingable around the fixed pin 7 with the fixed pin 7. The length of the link lever 8 is formed sufficiently longer than the eccentric distance of the pin 5, that is, the turning radius r5, and a long hole 9 is bored along the longitudinal direction on the swing end side thereof. The pin 5 protruding from the disk 6 is slidably engaged with the elongated hole 9, and a line connecting the pin 5 and the rotary shaft 2 and a line connecting the pin 5 and the fixed pin 7 of the link lever 8 are formed. When match
The rotary shaft 2 is located between the pin 5 and the fixed pin 7. That is, the rotation radius r5 of the pin 5 is smaller than the distance connecting the swing center O7 of the link lever 8 and the pin 5, and when the pin 5 rotates, the ink lever moves in the same rotation direction as the rotation direction. 8 is made to swing, and the rotation range of the pin 5 (that is, the rotation range θ6 of the disk 6)
At both end portions, a line connecting the pin 5 and the rotary shaft 2 intersects the link lever 8 at a substantially right angle.

A wire cable 10 for opening and closing an air mix damper (not shown) of the air conditioner is fixed to the support 3 and the link lever 8. That is, the outer body 11 of the wire cable 10 is fixed to the support body 3 by the stoppers 12 so as to intersect the link lever 8 at substantially right angles over the entire swing angle range θ8, Inner control wire inserted in the outer 11 freely
The tip 13a of 13 is rotatably connected to the link lever 8. In addition, the control wire 13 is the other end 13
Opening and closing of the air mix damper (not shown) of the air conditioner is controlled by b.

The support body 3 is provided with stoppers 14 and 15 for restricting the swing angle range θ8 of the link lever 8 integrally with the peripheral edge 3 a of the support body 3.

The disk 6 can be rotated by the click device 16 while being positioned by a predetermined angle over the entire rotation range θ6. As shown in FIG. 2, the click device 16 includes a spring 18 provided in a hole 17 of the support body 3, an engagement projection 19 that is urged by the spring 18 and is pressed against the disk 6, and the engagement projection 19. A plurality of engaging grooves 20 are provided over the rotation range θ6 of the disk 6 corresponding to 19.

Next, the operation of this embodiment will be described.

By rotating the operation knob 4 to the left and right, the disk 6 is rotated via the rotary shaft 2, and the pin 5 protruding from the disk 6 is provided.
Is rotated about the rotary shaft 2. The rotation of the pin 5 causes the link lever 8 to swing around the fixed pin 7, and the wire cable connected to the swing end side of the link lever 8.
As a result of the tip 13a of the control wire 13 of 10 moving together with the link lever 8, the other end 13b of the control wire 13 expands and contracts, and the air mix damper of the air conditioner is controlled to open and close (opening control, etc.). At this time, the reciprocating stroke S of the tip 13a of the control wire 13 is determined by the length of the link lever 8 and its swing angle range θ8, and the pin 5 rotated by the operation knob 4 is a long hole of the link lever 8. Since it slides along 9, the turning radius of the pin 5
The length of the link lever 8 can be increased regardless of the size of r5.

For this reason, the tip portion 13a of the control wire 13 can be prevented from biting with the outer 11 thereof over the entire swing angle range θ8 of the link lever 8 and can reciprocate substantially linearly. Swing angle range of lever 8 θ8
The expansion / contraction amount of the control wire 13 with respect to the swing angle amount is substantially linearly proportional to the whole area of the.

By the way, the pin 5 which is rotated by the rotation of the disk 6 is located at the position 5a shown by the solid line in FIG. 1 according to the rotation range θ6 of the disk 6.
And a position 5b indicated by a chain double-dashed line, the link lever 8 pivoted about the rotary shaft 2 and engaged with the pin 5 through the elongated hole 9 has a position 8a indicated by a solid line and a two-point position. Position 8b indicated by the chain line
Swing between the control wire 13 and the tip 13
Reciprocate a from the position shown by the solid line to the position shown by the chain double-dashed line.

At this time, the pin 5 is positioned at both ends 5a, 5b of the turning range θ6.
In the vicinity of, the pin 9 is engaged with the elongated hole 9 of the link lever 8 in proximity to the fixed pin 7 which is the swing center thereof.
And a line connecting the rotary shaft 2 intersects the line connecting the pin 5 and the fixed pin 7 at a substantially right angle. Further, in the center of the rotation range θ6, the pin 5 moves to a position away from the fixed pin 7 in the radial direction and engages with the elongated hole 9 of the link lever 8. At this time, the line connecting the pin 5 and the rotary shaft 2 is It substantially coincides with the line connecting the pin 5 and the fixed pin 7.

Therefore, when the pin 5 is rotated in the vicinity of the central portion of the rotation range θ6, the rotation direction becomes substantially perpendicular to the link lever 8, so that the link lever 8 is rotated by the rotation angle amount of the pin 5. It oscillates linearly in approximately proportion, while its rotation range θ
In the vicinity of both end positions 5a, 5b of 6, since the rotation direction of the pin 5 changes toward the fixed pin 7 along the elongated hole 9,
The swing angle amount of the link lever 8 becomes extremely smaller than the rotation angle amount of the pin 5, and as a result, the amount of expansion and contraction of the control wire 13 relative to the amount of rotation of the operation knob 4 has a non-linearity as shown in FIG. Will be given.

That is, in the vicinity of the center of the rotation range θ6 of the pin 5, the swing angle amount of the link lever 8 with respect to the rotation amount of the operation knob 4 is increased, and the opening control amount of the air mix damper by the control wire 13 is increased. , On the other hand, rotation range θ
In the vicinity of both ends 5a and 5b of 6, it is possible to reduce the swing angle amount of the link lever 8 with respect to the rotation amount of the operation knob 4 and reduce the opening control amount of the air mix damper by the control wire 13. .

That is, as a result, as shown in FIG. 4, the operating force near the both ends of the rotation range of the operating knob 4 becomes lighter, and the fine adjustment of the blowing air temperature near the full cold position and the full hot position becomes easy, Since it is not necessary to provide a complicated link mechanism for imparting non-linearity to the air mix damper side as in the conventional case, the manufacturing cost can be reduced. Moreover, since the elongated hole 9 formed along the longitudinal direction of the link lever 8 may be formed linearly, the machining is easy and the productivity is good, and the manufacturing cost can be further reduced.

At the full cold position and the full hot position, the air mix damper completely closes the cold air side passage or the heating side passage. At this time, the air mix damper is pressed against the seal rubber.

However, when the air mix damper is pressure-bonded to the seal rubber in this way, springback is generated by the elastic force of the seal rubber, and the air mix damper has a force to push it back. In the air conditioner operating device, the air mix damper cannot be reliably locked at the full cold position or the full hot position against the springback.

However, in the case of the air conditioning operating device of the above-mentioned embodiment, when the operation knob 4 is set to the full cold position and the full hot position,
Since the line connecting the pin 5 and the rotary shaft 2 intersects the link lever 8 at a substantially right angle, even if the springback is transmitted through the control wire 13, the pin 5 ensures that the link lever 8 is secured. Can be locked to.

Although the pin 5 is rotated by the rotation of the operation knob 4 via the rotary shaft 2 and the disc 6 in the above-described embodiment, for example, although not shown, a second link lever is provided to provide this pin. The pin 5 may be fixed to the second link lever, and the pin 5 may be rotated by swinging the second link lever with the operation knob.

Further, the damper operated to open and close by this air conditioning operating device is not limited to the air mix damper of the above-mentioned embodiment, but may be applied to various flow path switching dampers provided in the air conditioning device.

<< Effect of Device >> As described in the above embodiments, according to the air conditioning operating device of the present invention, the wire cable is connected to the rotatable link lever, and the wire cable is extended along the longitudinal direction of the link lever. A simple structure is provided in which a hole is bored and a pin that rotates around a position different from the swing center of the link lever by the operation of the operation knob is engaged with the elongated hole. The amount of expansion and contraction of the wire cable with respect to the operation amount
Non-linearity can be given to the opening / closing amount of the damper of the air conditioner that is opened / closed via the wire cable, so that the operability can be improved while reducing the cost of the air conditioner. Further, since the elongated hole formed in the link lever may be provided linearly, it is easy to process, has excellent productivity, can further reduce the manufacturing cost, and can be provided at the lowest possible price.

[Brief description of drawings]

FIG. 1 is a rear view showing an embodiment of an air conditioning operating device according to the present invention, FIG. 2 is a side sectional view of FIG. 1, and FIG. 3 is a rotation amount of an operating knob by the air conditioning device of the present invention. And a diagram showing the non-linearity of the movement stroke amount of the wire cable tip,
FIG. 4 is a diagram showing the relationship between the rotation amount of the operating knob and the operating force thereof by the air conditioning device of the present invention. 4 ... Operation knob, 5 ... Pin 8 ... Link lever, 9 ... Long hole 10 ... Wire cable

Claims (1)

[Scope of utility model registration request] 1. An air conditioner operating device for opening and closing a damper of an air conditioner via a wire cable according to an operation amount of an operation knob, wherein the wire cable is connected to a swingable link lever and the link lever is connected to the link lever. A long hole is formed along the longitudinal direction, and a pin that is rotated around a position different from the swing center position of the link lever by the operation of the operation knob is engaged with the long hole. Air conditioning operating device to be.