JPS6029542A - Baffle plate driving gear for air conditioner - Google Patents

Abstract

PURPOSE:To smoothen reciprocation of an operating rod, by a method wherein a turning-preventing rod located eccentrically with respect to the axis of an operating rod and extending in parallel to the axis is supported on a base so that it can be moved only in the axial direction. CONSTITUTION:A fitting bracket 16 is connected to the operating rod 26 by a screw, and a baffle plate operating cable is operated in accordance with forward and backward movements of the rod 26. A round rod form turning-preventing rod 50 is integrally provided at a descending part of an arm part 48 provided on the forward side of the bracket 16. The rod 50 is located in parallel to the axis of the rod 26, with the axis thereof located eccentrically with respect to the axis of the rod 26, and is supported by passing through a guide hole 51 provided in a vertical wall part of the base 22.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wind direction plate drive device in an air conditioner, and particularly to a wind direction plate drive device for automatically swinging a wind direction plate provided at an air outlet of an air conditioner to adjust the direction of blown air. This invention relates to a drive device for causing movement.

Conventionally, in an air conditioner, for example, an air conditioner for an automobile, the direction of the blown air is changed by manually operating a wind direction plate disposed at the outlet as necessary.
Although efforts are being made to eliminate uneven distribution of temperature inside the vehicle, since the wind direction must be changed manually, it is difficult and cumbersome to change the wind direction frequently. Therefore, there were cases where the air conditioning inside the car became localized.

For this reason, it has been considered to adopt a wind direction plate drive device that automatically swings the wind direction plate provided at the air outlet using air pressure. In such a wind direction plate driving device, the negative pressure generated in the intake manifold of an automobile engine as an air pressure source is used.
This negative pressure and atmospheric pressure are alternately switched by a response valve whose operation is controlled by a predetermined mechanism, and by reciprocating a pneumatic operating mechanism such as a diaphragm, the wind direction plate is automatically oscillated. ing.

By the way, in such a wind direction plate drive device, a diaphragm mechanism is generally used as the pneumatic actuation mechanism.
Then, the actuating rod is caused to reciprocate by a predetermined air pressure (negative pressure) and atmospheric pressure that are applied alternately to this, and this reciprocating movement is further transmitted to the wind direction board side by a transmission means such as a cable, thereby achieving the desired purpose. The actuating rod of the diaphragm mechanism is supported at its protruding portion (guide portion) from the housing of the diaphragm mechanism, and the axial movement of the actuating rod is Depending on the direction of force applied to the wind direction plate attached to the tip of the actuating rod, the tip of the actuating rod may move vertically or horizontally. In addition, rotational force may act on the actuating rod, which may prevent the diaphragm from operating smoothly, cause play in the support of the actuating rod, or even damage the diaphragm seal. This can cause problems such as breakage of the diaphragm, causing considerable problems with the operational durability of the diaphragm mechanism.

The present invention has been made against this background, and its purpose is to smoothly reciprocate the actuating rod of the pneumatic actuating mechanism in the wind direction plate drive device of an air conditioner. It is an object of the present invention to provide a wind direction plate driving device which prevents unnecessary movements such as swinging and rotation of the operating rod and improves operational durability.

In order to achieve this object, the present invention provides an air conditioning system that operates in accordance with the reciprocating motion of an operating rod of a pneumatic operating mechanism that is activated in response to the alternating application of predetermined air pressure and atmospheric pressure. The predetermined air pressure and atmospheric pressure are applied to the pneumatic operating mechanism by a response valve that is switched and controlled in accordance with the movement of the operating rod while automatically oscillating the wind direction plate disposed at the outlet. In the wind direction plate drive device, a connecting member is attached to the actuation rod of the pneumatic actuating mechanism for connecting the actuation rod and a transmission means for transmitting the reciprocating motion thereof to the wind direction plate side. , a rotation prevention rod is provided on the connecting portion or on the actuation rod, the rotation prevention rod being located eccentrically with respect to the axis of the operation rod and extending parallel to the axis direction; is supported so as to be movable in the axial direction of the base to which the pneumatic actuation mechanism is attached.

Therefore, according to the configuration of the present invention, the actuation rod of the pneumatic actuation mechanism, which is caused to reciprocate by applying predetermined air pressure and atmospheric pressure alternately, is supported at its base in the housing of the pneumatic actuation mechanism itself, and further The actuating mechanism is supported by the base on which it is attached, and its distal end portion is axially only connected to the base via a predetermined rotation prevention rod eccentrically arranged with respect to the actuating rod. The actuating rod is movably supported and configured so that the tip of the actuating rod does not swing or rotate.
It will be supported at two points, and it will be able to move back and forth under this two-point support state.

Therefore, this effectively restricts the play in the vertical and horizontal directions of the actuating rod, and also effectively prevents rotation of the actuating rod itself around its axis. The load on pneumatic members such as the diaphragm can be reduced, the movement of the actuating rod can be made smooth, and its operational durability can be significantly improved.

Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention 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 of an air conditioner for an automobile. is blown into the vehicle interior along the direction of the wind direction plate 2. 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 by a pin 10 to one end of a cable 12 serving as a transmission means. The other end of the cable 12 is connected to a mounting bracket 16, which is a connecting member, via a pin 14, and the outer cable 1 near this end
8 is fixed to a base 22, which is a stationary member, by a cable clamp 20.

On the other hand, as shown in detail in FIGS. 2 and 3, the diaphragm mechanism 24 is fixed to the base 22, and the mounting bracket 16 is connected to a diaphragm shaft 26 as an operating rod with a screw. As the diaphragm shaft 26 moves back and forth, the cable 12 is pushed out or pulled.

More specifically, the diaphragm mechanism 24 includes a telescoping FRE velor phragm rubber (diaphragm) 30 that partitions the interior of the housing 28 into two chambers, and a spring 32. The direction opposite to the direction in which negative pressure acts (
A spring force is applied to extend it in the direction of arrow A). Then, with the velofram rubber 30 sandwiched between the velofram supporter 34 and the rondo savok 36, the diaphragm shaft 2 is inserted through them.
A front guide portion 38, which is integrally provided in the housing 28 and which guides the diaphragm shaft 26 to which one end of the diaphragm shaft 26 is attached, is fixed to the base 22 with screws. 22, and also supports the base of the diaphragm shaft 26 on the diaphragm mechanism side. Note that 40 is an atmospheric communication hole provided in the housing 28, and 42 is an orifice portion connected to a predetermined air pressure source.

By the way, the mounting bracket 16 is shown in FIGS. 2 to 4.
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 diaphragm mechanism 24 side. The tip of the plum shaft 26 is inserted and fixed by a screw 46 screwed in from above. Further, at the front end of the mounting bracket 16, that is, at the end of the cable 12, a first arm portion 48 is integrally provided, which extends laterally from the side thereof and has a hanging portion that hangs downward at the end. It is being In addition, cable 1
The bottle 14, to which the tip of the bottle 2 is locked, is erected on a flat portion on the front side of the mounting bracket 16.

A rotation prevention rod 50 in the shape of a round bar is integrally provided in the hanging portion of the first arm portion 48 . The rotation prevention rod 50 extends for a predetermined length parallel to the axis of the actuating rod 26, and its axis is eccentrically positioned with respect to the axis of the actuating rod 26. The operating rod 26 and the rotation prevention rod 5
0 is located on a different axis. Further, as shown in FIG. 5, the rotation prevention rod 50 is inserted into and supported by a guide hole 51 formed in the vertical wall portion of the base 22.
This guides the rotation prevention rod 50 to move only in its axial direction, and guides the tip of the diaphragm shaft 26 only in its reciprocating direction, and in directions perpendicular thereto, that is, up and down, left and right. It is designed to prevent movement in that direction.

In addition, the diaphragm mechanism 2 of the mounting bracket 16
A second arm portion 52 is provided at the end portion of the fourth side, and extends laterally from the side surface by a predetermined length. , are positioned at a predetermined distance apart in the reciprocating direction.

A disconnecting mechanism is constructed in which a pin 54 is disposed between the first arm section 48 and the second arm section 52 provided on the mounting bracket 16 and is erected to receive the pressing movement action of these arm sections. The pressing member 56 shown in FIGS.
As shown in FIG. 8, it has a main body 58 with a rectangular cross section, one side of the book body 58 is brought into contact with the inner surface 55 of the rising edge 53 of the base 22, and the book body 58 has a rectangular cross section. It is pressed by the attached leaf spring 60 so that the pressing member 56 can be moved along the inner surface 55 of the rising edge 53, that is, in the left-right direction in FIG. 6, with a predetermined sliding friction resistance. It has become. Incidentally, an inverted T-shaped leg portion 62 is integrally provided at the lower part of the main body 58 of the pressing member 56, and this leg portion 62 engages with a guide hole 64 provided at the bottom of the base 22. Guidance in the frictional sliding direction as described above can take place.

Then, due to the reciprocating movement of the pressing member 56, the
A microswitch 66 that is turned off is the first
As shown in FIGS. 3 to 3, it is fixed to a base 22. The position of this microswitch 66 is determined by the position of the pressing member 56.
As the diaphragm shaft 2 reciprocates, its input portion 68 is positioned at a position where it can be pressed and released.
Mounting bracket 1 that is moved according to the reciprocating motion of 6
As the pressing member 56 is intermittently reciprocated by the pressing movement by the first arm portion 48 and the second arm portion 52 of 3 to 6, the micro switch 66 is turned on.
, it can be turned off.

On the other hand, in FIG. 1, reference numeral 70 denotes a battery as a power source, which is connected to the microswitch 66 via an actuation switch 72.
is connected to an excitation coil (not shown) of the solenoid valve 74. The solenoid valve 74 includes three boats (not shown), one of which (the first boat) is connected to the boat of the orifice portion 42 of the diaphragm mechanism 24 through a hose 76, and the diaphragm mechanism 24 negative pressure chambers 78. Another boat (second) is connected to an intake manifold of an automobile engine (not shown) via a vacuum tank 82 with a hose 80. Furthermore, one other boat (third) is open to the atmosphere. When the solenoid valve 74 is energized, it allows the first boat and the second boat to communicate with each other, and when it is not energized, it allows the first boat and the third boat to communicate with each other. There is.

Note that the wind direction plate drive device having such a configuration is operated as follows.

That is, the diaphragm mechanism 24 shown in FIG.
In the stopped state, turn on the operation switch 72 of this device.
After that, when the microswitch 66 is ON, that is, when its input section 68 is in an open state where it is not pressed by the pressing member 56, the solenoid valve 74 is energized, and the first boat and the second boat are energized. The second boat will be connected. Then, a predetermined negative pressure of the vacuum tank 82 acts on the negative pressure chamber 78 of the diaphragm mechanism 24 via the hose 76. As a result, the diaphragm shaft 26 moves to the left in the figure against the spring force of the spring 32, and finally reaches its ultimate position (the position shown in FIG. 10).
reach. At this time, the pin 54 remains stationary until it comes into contact with the side surface of the first arm portion 48 (the state shown in FIG. 9),
After the contact 5, the pressing member 5 under the bias of the leaf spring 60
6, the rising edge 53 of the base 22 is further pushed to the left in FIG. 68, the input section 6
8 is pressed, and the microswitch 66 is turned off.

When the microswitch 66 is in the OFF state, the solenoid valve 74 is not excited, and therefore the first boat and the third boat are communicated with each other.
Atmospheric pressure acts on the negative pressure chamber 78, so that the diaphragm shaft 26 is moved to the first position by the biasing force of the spring 32.
In Fig. 0, it is now possible to move in the direction of arrow A. At this time, the mounting bracket 16 moves to the right and the second arm part 52 also moves to the right, but the pin 54 moves from the side of the first arm part 48 to the second arm part 52. It remains stationary while moving relatively to the medial side. Then, when the mounting bracket 16 further moves to the right, the pin 54 comes into contact with the inner side surface of the second arm part 52 and resists a predetermined sliding resistance of the pressing member 56. Push it to the right to release the pressure on the input section 68 of the micro switch 6 by the left end of the pressing member 56 and turn it on.
be. - FIG. 9 shows the return state in which the pressing member 56 has been moved to the right and reached the extreme position.

When the micro switch 6 is turned on in this way, the solenoid valve 74 is energized again, and as a result, the negative pressure chamber 78 of the diaphragm mechanism 24 is activated as described above.
A predetermined negative pressure is applied to the diaphragm shaft 26, whereby the diaphragm shaft 26 is moved in the direction of arrow B against the force of the spring 32, and is moved to the position shown in FIG. 1O.

By repeating this operation, the mounting bracket 1
6 is moved from side to side, the cable 12 connected thereto causes the connecting bar 8 to continuously move back and forth from side to side, and the airflow direction plate 2 moves counterclockwise and clockwise around the pivot 4. This results in the user being forced to alternately swing his/her head from position 7 to position 7.

Note that when the operating switch 72 is turned OFF, the solenoid valve 74 is not energized, and therefore the first boat and the third boat are communicated with each other as described above, thereby reducing the negative voltage of the diaphragm mechanism 24. - Atmospheric pressure is applied to the pressure chamber 78, causing a diaphragm shirt, -7,.

The switch 26 moves in the direction of arrow A, and as shown in FIG. 3, the input section 68 of the cross section 66 opens.

In the released state, the device is adapted to be stopped.

In this way, by alternately applying negative pressure and atmospheric pressure to the diaphragm mechanism 24, the diaphragm shaft 26
is reciprocated in the axial direction of the diaphragm shaft 26. In this embodiment, the mounting bracket 16 is attached to the tip of the diaphragm shaft 26.
The diaphragm 8 is supported by a guide hole 51 provided in the rising wall portion of the base 22 via a rotation prevention rod 50 extending integrally therefrom, thereby allowing the diaphragm 8 to move only in the reciprocating direction of the shaft axis. It is considered possible,
The diaphragm shaft 26 is provided in the housing 28 of the diaphragm mechanism 24 because its movement in the vertical and horizontal directions, that is, in the direction perpendicular to the axis of the diaphragm shaft 26 is restricted. Considering that the base of the rod guy 1 section 38 is supported, this means that it is supported at two points at both ends.

Therefore, by supporting the diaphragm shaft 26 at two points at both ends, the diaphragm shaft 26 can be supported at two points.
The reciprocating movement of the diaphragm shaft 26 becomes extremely smooth, and in addition, the vibration of the tip of the diaphragm shaft 26, in other words, the vertical and horizontal play is restricted, so that the load on the Herofram rubber 30 can be reduced. This made it possible to effectively improve its operational durability and reduce the number of failures.

In addition, the rotation prevention rod 50 integrally provided on the mounting bracket throat 16 is guided into the guide hole 51 of the base 22 at a position eccentric to the axis of the diamond 9 flam shaft 26. Therefore, even if the cable 12 attached to the mounting bracket 16 causes the diaphragm shaft 26 to rotate around its axis, the diaphragm shaft 26 will not rotate around its axis. As a result, the movement of the verofram rubber 30 of the diaphragm mechanism 24 can be effectively restricted.
This has made it possible to eliminate the adverse effects on the operation due to the torsional action on the shaft, and also to eliminate problems such as the seal of the verofram rubber 30 being broken.

Additionally, in the above embodiment, the mounting bracket 16
The first arm portion 4B provided on the side of the microswitch 6 serves as one arm for moving the pressing member 56 that presses or releases the input portion 68 of the micro switch 6, and is separately provided on the side of the mounting bracket 16. Second arm portion 52
At the same time, the intermittent reciprocating movement of the pressing member 56 can be effectively carried out, thereby allowing the pressing member 56 to be moved with a simple structure, and the microswitch 66
This gives rise to the advantage of being able to operate the switch.

In addition, in the above-mentioned embodiment, an example was shown in which the diaphragm mechanism was driven by negative pressure from a negative pressure source when applied to an automobile air conditioner, but the present invention is not limited to this in any way. It can be applied to any device other than a car that has a pneumatic pressure source, and it is not necessarily limited to negative pressure as the pneumatic pressure; positive pressure may also be used.Furthermore, instead of a diaphragm mechanism, Cylinders and other pneumatically actuated mechanisms may also be used.

In addition, in the above example device, the leaf spring 6 is used as the disconnection mechanism.
Using a pressing member 56 with increased sliding resistance due to a biasing action of 0, the pressing member 56 is intermittently reciprocated by the first arm portion 48 and the second arm portion 52 of the mounting bracket 16, By temporarily holding the moving end position, the input section 68 of the microswitch 66 is alternately pressed and released; however, the present invention is not limited to only such a mechanism. Instead, other structures with similar functions are used, such as those with a mechanism in which a cylinder and a piston that can move in and out with a predetermined sliding resistance are moved back and forth using a bottle. Furthermore, it is possible to employ various switch mechanisms in addition to the microswitch 66 as the switch means.

Furthermore, in the above device, the rotation prevention rod 50 is integrally formed with the mounting bracket 16 as a connecting member, but in addition to this structure, the rotation prevention rod 50 may be formed separately from the connection member. It is also possible to attach it to the actuating rod as a body, and furthermore, even in the support structure on the base side that supports such a rotation prevention rod, it is possible to attach it to the actuating rod as a body. If the movement can be prevented, it is possible to adopt a supporting structure or a regulating structure other than the guide hole 51 as in the above example.

In addition, 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 the drawing]

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,
Fig. 3 is a cross-sectional view in the ■-■ direction in Fig. 2;
The figure is a perspective view of a mounting bracket used in such a wind direction plate drive device, FIG. 5 is a cross-sectional view of the main part in the V-V direction in FIG. 3, and FIG. The assembly of the leaf spring that urges the same is shown in a view (partially cut away) corresponding to FIG. 3, showing a state in which atmospheric pressure is applied to the diaphragm mechanism and a state in which negative pressure is applied to the diaphragm mechanism. 3 2: Wind direction plate 12: Cable 16: Mounting bracket 22: Base 24: Diaphragm mechanism 26: Diaphragm shaft 28: Housing 30: Velophram rubber 48: First arm portion 50: Rotation prevention rod 51: Guide hole 52: Second Arm part 56: Pressing member 60: Leaf spring 66: Micro switch 70: Basoteri 72: Operation switch 74: Solenoid valve Applicant: Kojima Press Kogyo Co., Ltd. 4 Figure 4 b2 Figure 5

Claims (1)

[Claims] +11 A wind direction plate disposed at an air outlet of an air conditioner is moved according to the reciprocating movement of an operating rod of a pneumatic operating mechanism that is operated in response to the alternating application of predetermined air pressure and atmospheric pressure. A wind direction plate drive that automatically swings and alternately switches between the predetermined air pressure and atmospheric pressure applied to the pneumatic actuating mechanism by a response valve that is switched and controlled according to the movement of the actuating rod. In the device, a connecting member for connecting the actuating rod and a transmission means for transmitting the reciprocating motion thereof to the wind direction plate side is attached to the actuating rod of the pneumatic actuating mechanism, while the connecting member is attached to the actuating rod or the actuating rod A rotation prevention rod is provided eccentrically with respect to the axis of the actuation rod and extends parallel to the axis, and the rotation prevention rod is attached to a base to which the pneumatic actuation mechanism is attached. A wind direction plate drive device for an air conditioner, characterized in that it is supported so as to be movable only in the axial direction. (2) The response valve is provided on a passage for pneumatic pressure supplied to the pneumatic actuation mechanism, and alternately applies a predetermined air pressure to the pneumatic actuation mechanism and communicates the pneumatic actuation mechanism to the atmosphere. a solenoid valve for switching, the solenoid valve controlling the energization to the solenoid valve by pressing and opening the input part, and controlling the switching operation by the solenoid valve by turning on and off the energization; An intermittent switch which is caused to move back and forth intermittently in conjunction with the reciprocation of the actuation rod of the pneumatic actuation mechanism, and which temporarily holds the end position of the movement and alternately presses and releases the input section of the switch means. 2. The device according to claim 1, wherein the device is switched and controlled by a mechanism. (3) The rotatable IF rod is integrally formed with a first arm portion extending laterally from a side of the connecting member, and the rotation prevention rod is a guide provided on the base. 3. The device according to claim 1, wherein the device is fitted into a hole and supported so as to be guided in the axial direction of the hole. (4) The connecting member has a second arm portion that extends laterally and is located at a predetermined distance from the first arm portion in the reciprocating direction thereof, and the second arm portion extends laterally; A pin for operating the disconnection mechanism is provided between the arm section and the second arm section, and the press movement of the bottle by the first arm section and the second arm section activates the disconnection mechanism. Claim 3 in which intermittent reciprocating movement is caused
Apparatus described in section.