JPS6115035A - Air direction plate driving device in air conditioning apparatus - Google Patents

Abstract

PURPOSE:To enable a smooth automatic control over an air direction plate to be controlled by a method wherein a switch for a solenoid valve for use in changing-over a pneumatic pressure operating mechanism for an air direction plate driving device is turned on or off by a cam member which is intermittently reciprocated under a desired frictional resistance. CONSTITUTION:When a switch 88 is turned on, a solenoid valve 70 is energized, a diaphragm 30 of a diaphragm mechanism 24 for opening and closing an air directioi plate 2 is moved in such a directioi as opposing to a spring 32 witn a negative pressure and the air direction plate is rotated until the micriswitch 66 is depressed to cause the plate to be reached to the desired position. When the plate is reached to the desired position, an energization of the solenoid valve 70 is terminated, an atmospheric pressure is applied to a negative pressure chamber 29 of a diaphragm mechanism, a shaft 26 is moved in a direction indicated by an arrow A under a biasing force of the spring 32, and the air directing plate is rotated in a direction opposite to the former direction. This operatioi is repeated and the air directing pate may perform an alternative oscillation movement.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a wind direction plate driving device for an air conditioner, and particularly to a wind direction plate driving device for an air conditioner that automatically controls a wind direction plate that is provided at an air outlet of the air conditioner and adjusts the direction of the blown air. This invention relates to a drive device that causes a swinging motion.

BACKGROUND ART Conventionally, in an air conditioner, for example, an air conditioner for a car, the direction of the blown air is changed by manually operating the wind direction plate provided at the air outlet as necessary, thereby changing the temperature distribution inside the car. Although attempts were made to eliminate bias, since the wind direction must be changed manually, it is difficult and cumbersome to change the wind direction frequently, and as a result, the air conditioning inside the car becomes localized. There was a case.

For this reason, it has been considered to drive the wind direction plate provided at the air outlet with an appropriate motor, but in this case, a reduction gear is required, and the noise of such a reduction gear is therefore noisy. Not only does it cause discomfort to the driver,
Since a motor and a speed reducer are required, the device has the disadvantage of being expensive.

In addition, in Japanese Patent Application Laid-Open No. 57-182042, etc.,
It has been proposed to adopt a wind deflector driving device that uses air pressure to automatically oscillate such a wind deflector, using negative pressure generated in the intake manifold of an automobile engine as the air pressure source. Then, this negative pressure and atmospheric pressure are alternately switched by a response valve whose operation is controlled by a predetermined mechanism, which acts on a pneumatic operating mechanism such as a diaphragm, and by reciprocating it, the wind direction plate is automatically moved. It is designed to make the head oscillate.

Problems to be Solved by the Invention However, in the case of a wind direction plate drive device that uses air pressure to automatically perform swinging motion,
The big problem is how to smoothly operate the response valve in accordance with the reciprocating motion of the pneumatic actuating mechanism to reliably switch between negative pressure and atmospheric pressure.For example, in the device disclosed in the above publication, A toggle switch-like switch is used, and the lever of this switch is moved by the operating arm, but this poses problems in terms of the durability of the switch and the reliability of switch operation. It was not completely satisfactory as a switching control mechanism.

Means for Solving the Problems Here, the wind direction plate drive device for an air conditioner according to the present invention has been completed against the background of the above circumstances, and its gist is as follows: (a) First. reciprocating motion by alternately applying the air pressure and the second air pressure,
(b) a pneumatic operating mechanism that swings a wind direction plate disposed at an air outlet of the air conditioner; (c) a first state in which energization of the solenoid valve is permitted and a state in which energization is prevented by pressing and releasing an input portion; (d) switching means to an ON state for energizing the solenoid valve when switching of the switch means from the second state to the first state is completed; relay means that switches to an OFF state that stops energizing the solenoid valve when switching from the first state to the second state is completed;
e) It is brought into sliding contact with a stationary member with a predetermined frictional resistance, and is made to intermittently slide back and forth in relation to the reciprocating movement of the pneumatic actuation mechanism, and maintains its sliding end position, so that the intermittently The present invention includes a cam member that alternately presses and releases the input portion of the switch means by sliding.

Functions and Effects According to the present invention, the solenoid valve for switching and operating the pneumatic actuating mechanism of the wind direction plate drive device is operated by a bushing type by a cam member that is intermittently slid back and forth under a predetermined frictional resistance. Turn on and off with a simple switch
By activating it, it can be controlled smoothly and effectively, thereby providing a highly reliable device that can automatically and smoothly swing the wind direction plate of the air outlet. This eliminates the need for complicated manual operations like in the past, eliminates problems such as noise from the reduction gear that occurs with motor-type models, and eliminates imbalances in indoor temperature distribution, resulting in comfortable air conditioning. Moreover, the structure is simple, and therefore the design is easy, the durability is improved, and it is also economically advantageous.

Furthermore, since the input section of the switch means can be pressed and opened effectively and reliably by a cam member that is skillfully operated intermittently, the stability of the switch operation is significantly improved, and compared to the conventional switch. Compared to a structure in which the lever is moved by the operating arm, it operates more smoothly, has fewer failures, and is more durable.

In addition, in a structure in which a large amount of force is applied, a relay means is provided, so that even if the cam member starts pressing or opening the switch means, the electromagnetic relay is not activated until the switching operation of the switch means is completely completed. Since the energization control state for the valve is not changed, a sufficient stroke is given to the input section of the switch means, and therefore problems caused by insufficient stroke of the switch means can be avoided. There is also the great advantage of being able to do so.

That is, when the switching operation of the solenoid valve is immediately performed by pressing and opening the input part of the switch means by the cam member, the input part of the switch means is pressed by the sliding and contact of the cam member. When the contact point inside the switch means is separated, the switching operation of the solenoid valve, the stoppage of the pneumatic actuation mechanism, and the stoppage of sliding of the cam member are immediately triggered, and the cam member sufficiently presses the input section. As a result, the contacts inside the switch means stop at an unstable position, and the contacts vibrate due to external vibrations (fine movements), causing the switch means to repeatedly turn on and off in very short periods. However, in the present invention, the energization control state of the solenoid valve is maintained by the relay means until the switching of the switch means by the cam member is completely completed and the terminal inside the switch means moves to a stable position. is maintained at a constant state, and further pressing force is applied to the input section of the switch means, so that occurrence of such a phenomenon can be effectively avoided.

EXAMPLE Hereinafter, in order to clarify the present invention more specifically, one example thereof will be described in detail based on the drawings.

First, in FIG. 1, reference numeral 2 denotes a wind direction plate provided at an air outlet as an air conditioner for an automobile, and is rotatable around a pivot 4. The blown air is blown into the vehicle interior. Further, one end of the wind direction plate 2 is pivotally supported by a connecting bar 8 by a pin 6, and the connecting bar 8 is further connected to one end of a cable 12 by a pin 10. The other end of the cable 12 is connected to a mounting bracket 16 via a pin 14, and the outer cable 18 near this end is fixed to a pace 22, which is a stationary member, with a cable clamp 20. .

Further, in FIG. 1, 24 is a diaphragm mechanism, which is fixed to the heath 22.

As shown in detail in FIGS. 2 and 3, this diaphragm mechanism 24 includes a telescoping diaphragm 30 that partitions the inside of the separate housing 28 into two chambers, a negative pressure chamber 29 and an atmospheric pressure chamber 31. and a compression coil spring 32 housed in the negative pressure chamber 29, so that the diaphragm 30 is always urged toward the atmospheric pressure chamber 31 side (in the direction of the arrow in FIG. 3) by the spring 32. It has become. A diaphragm shaft 26 is attached to the diaphragm shaft 26 so as to be movable in its axial direction, passing through the atmospheric pressure chamber 31 and supported at one end by a diaphragm supporter 34 and a rod supporter 36 that sandwich the diaphragm 30 therebetween. Brackets 16 are connected with screws. The mounting bracket 16 is reciprocated as the diaphragm shaft 26 moves back and forth, and the cable 12 is pushed out or pulled by the reciprocation of the mounting bracket 16.

Note that the atmospheric pressure chamber 31 is communicated with the atmosphere through an atmosphere communication hole 40 formed in the housing 28, and the negative pressure chamber 29 is communicated with a solenoid valve 70, which will be described later, through an orifice portion 42 and a hose 43. ). Also, housing 2B
is screwed and fixed to the base 22 at a rod guide portion 38 that guides the diaphragm shaft 26.

By the way, the mounting bracket 16 is shown in FIGS. 4 to 6.
As shown in the figure, a mounting hole 44 into which the tip of the diaphragm shaft 26 is inserted is provided at the rear end, which is the end on the side 24 of the diaphragm machine. The distal end of the shaft 26 is inserted and fixed by a screw inserted through the screw hole 46. Further, at the front end of the mounting bracket/nodule 16, that is, at the end of the cable 12, the cable extends laterally from both sides thereof so that its planar form has a T-shape (see FIG. 4), and the end portion A pair of first arm portions 48 are each integrally provided in a state of being bent in a U-shape so as to face each other downward. Note that the pin 14 to which the tip of the cable 12 is locked is erected at a portion between the first arm portion 48 and the portion where the attachment hole 44 is formed.

As shown in FIG. 6, the pair of first arm portions 48, 48 engage with the flanges 50 on both sides of the base 22 so as to embrace them, and move the diaphragm shaft 26 in the vertical and horizontal directions. The diaphragm shaft 26 can be guided and moved only in the direction of its reciprocating power. Further, a second arm portion 52 is provided that extends laterally by a predetermined length from the side surface of the rear end portion of the mounting bracket 16.

The cam member also includes a pin 54 that is disposed between a first arm portion 48 and a second arm portion 52 provided on the mounting bracket 16 and receives a pressing movement action from these arm portions. The rod cam 56 shown in Fig. 7~
As shown in FIG. 9, it has a main body 58 with a rectangular cross section, and one side of this main body 58 is brought into contact with the inner surface 51 of a flange 50 that is erected at the peripheral edge of the base 22, Along this inner surface 51, it can be moved laterally in FIG. 7. Further, the rod cam 56 receives a biasing force from a leaf spring 60 as a biasing means attached to the base 22.
Its side surface is pressed against the inner surface 51 of the flange 50.

In other words, the rod cam 56 is made to slide back and forth in the left-right direction in FIG. 7 with a predetermined frictional resistance induced by the biasing force of the leaf spring 60.

Note that an inverted T-shaped leg portion 62 is integrally provided on the lower surface of the main body 58 of the rod cam 56, and this leg portion 6
2 engages with a guide hole 64 provided at the bottom of the base 22, so that guidance in the frictional sliding direction as described above can be performed.

Further, a large hole portion 65 is provided at the end of the guide hole 64, and by inserting the leg portion 62 of the rod cam 56 into the large hole portion 65, the rod cam 56 is attached to the base 22.
It is designed so that it can be attached to the

Then, as shown in FIGS. 1 to 3, a microswitch 66 whose common terminal C is selectively connected to the normally closed contact NC and the normally open contact NO by the reciprocating movement of the rod cam 56 is attached to the base 22. Fixed. In this microswitch 66, as the rod cam 56 reciprocates, the input section 68 is connected to the rear end surface (
The common terminal C is fixed in a position that can be pressed and released by the diaphragm mechanism 24 side end surface), and when the input part 68 is pressed by the rod cam 56, the common terminal C is connected to the normally open contact No. When the pressure is released, the common terminal C is connected to the normally open contact No. It is designed to be connected to the normally closed contact NC.

On the other hand, in FIG. 1, 70 is a solenoid valve, which is equipped with three boats (not shown), one of which is
! 8-) is connected to the boat of the orifice portion 42 of the diaphragm mechanism 24 through the hose 43, as described above, and communicated with the negative pressure chamber 29 of the diaphragm mechanism 24. Another boat (second) is connected to an intake manifold of an automobile engine (not shown) via a vacuum tank 74 with a hose 72. Furthermore, one other boat (third) is open to the atmosphere. The solenoid valve 70 has an excitation coil 76 (
10) is energized, the first boat is placed in communication with the second boat, and when the excitation coil 76 is not energized, the first boat is placed in communication with the third boat. It looks like this.

In this embodiment, as shown in FIG. 10, which shows the excitation circuit of the excitation coil 76 of the solenoid valve 70, a contact portion 80 of a relay 78 serving as a relay means is connected in series to the excitation coil 76. At the same time, the first coil 82 of the relay 78 sets the contact portion 80 to the ON state by excitation, and the first coil 82 of the relay 78 sets the contact portion 80 to the OFF state by excitation.
The second coil 84 of the relay 78 to be set to the F state is
They are provided in parallel to each other and to the contact section 80 and the excitation coil 76 connected in series, and as described above,
When the common terminal C of the microswitch 6 is connected to the normally open contact No. by the pressure of the input part 68 by the rod cam 56, the second coil 84 is energized, and the pressure is released and the microswitch 6 is connected to the normally open contact No. When the common terminal C of is connected to the normally closed contact NC, the first coil 82 is energized. In FIGS. 1 and 10, 86 is a power source, and 88 is an operation switch for starting and stopping the device.

Next, the operation of the wind direction plate drive device having such a configuration will be explained.

For ease of understanding, we will first describe the stopped state of the apparatus in which the operating switch 88 in FIG. 10 is in the OFF state. That is, in this case, since the excitation coil 76 of the solenoid valve 70 is not excited, the first boat and the third boat of the solenoid valve 70 are communicated with each other as described above, and the negative pressure of the diaphragm mechanism 2.4 is Atmospheric pressure is applied to the chamber 29.

Therefore, as shown in FIG. 3, the diaphragm mechanism 24 is in a state in which the diaphragm shaft 26 is projected toward the atmospheric pressure chamber 3 by the biasing force of the compression coil spring 32. In addition, at this time, the input section 68 of the micro spindle 6 is released from the pressure by the rod cam 56 because the mounting bracket 16 has been moved to the sliding end position in the six directions as the diaphragm shaft 26 protrudes. Therefore, as shown in No. 10, the common terminal C of the microswitch 6 is connected to the normally closed contact NG.

When the actuation switch 88 is turned on from the stopped state of this device, the first coil 82 of the relay 78 is excited, the contact part 80 is turned on, and the exciting coil 76 of the solenoid valve 70 is turned on.
is excited. Therefore, the first boat and the second boat are communicated with each other in the solenoid valve 70, and a predetermined negative pressure of the vacuum tank 74 is applied to the negative pressure chamber 29 of the diaphragm mechanism 24 via the hose 43. , diaphragm? -9, that is, the diaphragm shaft 26 is moved in the direction opposite to the arrow A against the urging force of the spring 32. At this time, the rod cam 56 is moved until the first arm portion 48 of the mounting bracket 16 comes into contact with the bin 54 due to a predetermined frictional resistance caused against the flange inner surface 51 of the base 22 by the urging force of the leaf spring 60. is stationary, but after the contact, the arrow A moves against the sliding friction resistance under the urging force of the leaf spring 60.
This causes it to come into contact with the input section 68 of the microswitch 66 and press it.

When the input part 68 is pressed by the rod cam 56 in this way, the internal movable terminal of the microswitch 66 is separated from the normally closed contact NC, so that the connection between the common contact C and the normally closed contact NC is released. , thus the supply of power to the first coil 82 of the relay 78 is stopped. However, even after the excitation of the first coil 82 is stopped, the contact portion 80 of the relay 78 is maintained in the ON state until the second coil 84 is excited. The excitation of the microswitch 66 is also continued, and the pressing operation of the input section 68 of the microswitch 66 by the rod cam 56 is also continued. As a result, the movable contact inside the micro switch 6 is moved to a stable position where it comes into contact with the normally open contact No.

When the movable terminal of the microswitch 66 is thus moved to a stable position in contact with the normally open contact No., the second coil 84 of the relay 78 is excited by the connection between the common terminal C and the normally open contact No.

Therefore, the contact part 80 of the relay 78 is turned off, the excitation of the excitation coil 76 of the solenoid valve 70 is stopped, and the third boat is brought into communication with the first port of the solenoid valve 70, and the diaphragm mechanism 24 is brought into communication with the first port of the solenoid valve 70. Atmospheric pressure is applied to the negative pressure chamber 29 . As a result, the diaphragm shaft 26 is moved in the direction of arrow A by the biasing force of the spring 32. At this time, as the diaphragm shaft 26 moves, the mounting bracket 16 also moves in the direction of the arrow A, and therefore the second arm part 52 also moves in the direction of the arrow A. It remains stationary until it comes into contact with the object. And bottle 5
4, the rod cam 56 is also moved in the direction of the arrow against a predetermined sliding resistance as the second arm 52 moves. When the pressure on the input section 68 of the switch 6 is released, the movable terminal of the microswitch 66 changes from the normally open contact No side to the normally closed contact NC side based on the biasing force applied to it.
side, connect the common contact C to the sealed contact NC, and turn the contact part 80 into the ON state.

In other words, the excitation coil 76 of the solenoid valve 70 is energized again, negative pressure is applied to the negative pressure chamber 29 of the diaphragm mechanism 24, and the diaphragm shaft 26 is again moved in the direction opposite to the direction of the arrow. By repeating such operations, the mounting bracket 16 is moved from side to side, and the cable 12 connected thereto causes the connecting bar 8 to continuously move back and forth from side to side. It is caused to swing around the pivot 4 alternately counterclockwise and clockwise.

In addition, as is clear from the above explanation, in this example,
The diaphragm mechanism 24 is a pneumatically actuated mechanism, and the negative pressure and atmospheric pressure applied to the negative pressure chamber 29 of the diaphragm mechanism 24 are first and second pneumatic pressures. Further, in this embodiment, the state in which the micro switch 6 is used as a switch means and the common terminal C is connected to the normally closed contact NC is considered as the first state, and the state in which it is connected to the normally open contact No. is considered to be the second state.

As explained above, according to this embodiment, the rod cam 5
6 is intermittently and alternately moved in the opposite direction in its axial direction as the mounting bracket 16 that connects the diaphragm shaft 26 and the cable 12 reciprocates. The pressing and releasing of the portion 68 can be performed effectively. and,
As a result, the diaphragm mechanism 24 by the solenoid valve 70
The switching control of the alternate application of negative pressure and atmospheric pressure to the pump can be effectively and reliably performed, and the switching control can be stabilized, so that the operation can be made smoother and there can be fewer failures. It became. The operating mechanism of the micro-sink 6 using the rotary cam 56 has a simpler structure than the conventional one, and therefore has good durability and is easy to design. At the same time, it has advantages such as low cost.

In particular, in the embodiment described above, the relay 78 is provided and the microswitch 6 is connected to the rod cam 56, as described above.
When the input section 68 of 6 is pressed, the micro switch 6
The pressing operation is maintained until the switching in step 6 is completed and the movable contact moves to a stable position.
This effectively avoids the occurrence of vibration (fine movement) of the microsink 6 due to insufficient pressing stroke of the input section 68, and ensures reliable operation of the diaphragm mechanism 24. .

Incidentally, if the relay 78 is not provided and the excitation control of the excitation coil 76 of the solenoid valve 70 is performed directly by switching the microswitch 66, the microswitch is controlled by pressing the input part 68 of the microswitch 66 by the rod cam 56. The movable terminal of Inchro 6 is a normally closed contact NC
When the connection between the common contact C and the normally closed contact NC is released, the negative pressure chamber 29 of the diaphragm mechanism 24 is immediately communicated with the atmosphere by the switching control of the solenoid valve 70. The movement of the mounting bracket (mounting bracket) 16 connects the input section 68 to the micro switch 66.
It is stopped before it can move a sufficient distance for switching operation (according to experiments, generally 1/1000 to 2/1
It has been confirmed that the movement of the input unit 68 is stopped when the input unit 68 has moved approximately 000 dragons. ), the movable contact is a normally closed contact N
stopped in an unstable position between C and normally open contact NO,
The movable terminal becomes 20 to 20 degrees due to external vibrations.
It vibrates slightly at a frequency of about 0 Hz and repeatedly connects and disconnects the normally closed contact NC and the common contact C, which may interfere with the swinging operation of the wind deflector plate 2 or even generate vibration noise. This could cause discomfort to the driver.

Further, in this embodiment, as described above, the diaphragm shaft 26 is supported at its base end by the rod guide 38 of the diaphragm mechanism 24, and its distal end is supported in the reciprocating direction by the mounting bracket 16 attached thereto. Since the diaphragm shaft 26 is guided only by the diaphragm shaft, the reciprocating motion of the diaphragm shaft 26 can be performed extremely smoothly.This also effectively improves its operating durability. Failures caused by loads caused by play in the shaft 26 can also be successfully avoided.

Further, in the structure of the above example, the engagement of the mounting bracket 16 with the flange 50 of the base 22 also restricts the rotation of the diaphragm shaft 26 around the axis, thereby restricting the rotation of the diaphragm mechanism 24. This eliminates the adverse effect on the operation due to the twisting action on the diaphragm 30, and also eliminates problems such as the diaphragm 30 breaking.

Further, in the above embodiment, the first arm portions 48 provided on both sides of the mounting bracket 16 and engaged with the base 22 are connected to the input portion 68 of the microswitch 66.
This is one arm that moves the rod cam 56 that presses or releases the rod cam 56, and together with the second arm section 52 separately provided on the side of the mounting bracket 16, the intermittent reciprocating movement of the rod cam 56 can be effectively performed. As a result, rod cam 5 can be installed with a simple structure.
Move 6 1. Also, it became possible to operate the micro switch 6.

Although one embodiment of the present invention has been described above, this is a literal illustration, and the present invention should not be interpreted as being limited to this specific example.

For example, in the above-described embodiment, an example was shown in which the diaphragm mechanism was applied to an automobile air conditioner and the diaphragm mechanism was driven by atmospheric pressure and negative pressure from a negative pressure source. Any source can be used as long as it has a source, and it is not necessarily necessary to use negative pressure and atmospheric pressure as the first and second air pressures.If the air pressures are different, positive pressure or negative pressure can be used. Regardless of the pressure, it can be used as the first pneumatic pressure and the second pneumatic pressure, and furthermore, a cylinder or other pneumatic operating mechanism can be used instead of the diaphragm mechanism 24 as the pneumatic operating mechanism.

In addition, in the upper device, a leaf spring 6 is used as a cam member.
A rod cam 56 with increased sliding resistance (frictional resistance) is used by the biasing action of 0, and is held at its moving end (sliding end) position by the sliding resistance, and is The first arm part 48, the second arm part 5
By being intermittently moved back and forth by 2,
Although the input section 68 of the micro-spin intro 6 is alternately pressed and released, the structure is not limited to this, and other structures having similar functions, such as cylinders, can be used. It is possible to use various structures such as a mechanism in which a piston that can move in and out with a predetermined sliding resistance is moved back and forth using a pin.

Furthermore, in addition to microswitches, it can also be used as a switching means.
Various switch mechanisms can be employed.

Further, in the embodiment, the relay 78 as a relay means
However, the so-called relay flip-flop was equipped with a contact section 80 and first and second coils 82 and 84 for setting the contact section 80 to the ON state and OFF state. As shown in Figure 11,
It is also possible to use a type of relay 94 that switches the ON state and OFF state of the contact portion 92 by switching the current direction to one coil 90. however,
In this case, the microswitch 9 shown in the same figure
6, the switch means is of a type in which two circuits can be switched simultaneously by pressing and releasing the rod cam 56. In addition,
Even in such a case, the common contacts Ci and C of each circuit
2 are connected to the normally closed contacts No., No. 2 when the input section 68 is pressed by the rod cam 56, and are connected to the normally closed contacts No. 2, No. 2 when the pressure is released.

Although not listed here, it goes without saying that various modifications, improvements, modifications, etc. can be made to the present invention based on the knowledge of those skilled in the art without departing from the spirit thereof.

[Brief explanation of drawings]

FIG. 1 is a system diagram schematically showing an embodiment of the wind direction plate drive device in an air conditioner according to the present invention, and FIG. 2 is an enlarged view of the main parts of the wind direction plate drive device shown in FIG. can be,
Figure 3 is a sectional view in the ■-1 direction in Figure 2, and
The figure is a plan view of the mounting bracket used in the device shown in FIG. 1, FIG. 5 is a front view thereof, FIG. 6 is a right side view thereof, and FIG. 7 is a rod cam and its Fig. 8 is a right side view, Fig. 9 is a front view, and Fig. 10 shows the excitation of the solenoid valve in Fig. 1. 11 is a circuit diagram for exciting a coil, and FIG. 11 is a circuit diagram corresponding to FIG. 10 of another embodiment of the present invention. 2: Wind direction plate 12: Cable 16: Mounting bracket 22: Base (stationary member) 24: Diaphragm mechanism (pneumatic actuation mechanism) 26: Diaphragm shaft 28: Housing 30: Diaphragm 48: First arm portion 52: Second arm Part 56: Rosodocam (
Cam member) 60; Leaf spring (biasing means) 66.96: Micro switch (switch means) 68 Two-man power section 70: Solenoid valve 76: Excitation coil 18.94: Relay (relay means) 80.92: Contact section 82 :First coil 84:Second coil 88Two-actuation switch 90:Coil

Claims (4)

[Claims] (1) A pneumatic operating mechanism that reciprocates by applying first air pressure and second air pressure alternately to swing a wind direction plate disposed at an air outlet of an air conditioner; and the pneumatic operating mechanism. an electromagnetic valve that is provided on a passage of air pressure supplied to the air pressure mechanism and alternately switches between applying a first air pressure and applying a second air pressure to the air pressure actuating mechanism; a switch means that switches between a first state that allows energization of the solenoid valve and a second state that blocks it; and switching of the switch means from the second state to the first state is completed. When the switching from the first state to the second state is completed, the electromagnetic valve is switched to an ON state in which the electromagnetic valve is energized.
a relay means that is brought into sliding contact with a stationary member with a predetermined frictional resistance, and is made to intermittently slide back and forth in relation to the reciprocation of the pneumatic actuation mechanism, and maintains its sliding end position; do,
A wind direction plate drive device for an air conditioner, comprising a cam member that alternately presses and releases the input portion of the switch means by the intermittent sliding. (2) the relay means has a contact portion that supplies power to the electromagnetic valve in an ON state and stops supplying the power in an OFF state, and a first coil that switches the contact portion to the ON state by excitation; a second coil that switches the contact portion to an OFF state by excitation, and the switch means excites the first coil when in the first state;
2. The wind direction plate driving device according to claim 1, wherein the second coil is excited when the wind direction plate is in the second state. (3) The cam member is a rod with a rectangular cross section that is reciprocated in the axial direction, and one side of the cam member is brought into sliding contact with the stationary member, and the end portion of the cam member is adapted to press and hold the switch means. A wind direction plate drive device according to claim 1 or 2, in which the opening is performed. (4) The wind direction plate drive according to any one of claims 1 to 3, wherein the predetermined frictional resistance is caused by a pressing action of the cam member against the stationary member by a predetermined urging means. Device.