JPH0136645Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Technical Field) The present invention relates to a vehicle air conditioning control device, and more particularly to a vehicle air conditioning control device that switches air conditioning modes by controlling a negative pressure switch by pressing a push lever. (Prior art and its problems) In recent years, push levers have become popular in air conditioners for vehicles, especially automobiles, because a negative pressure source is easily obtained, the structure is simple, and it suits the tastes of users. The negative pressure changeover switch is controlled by the pressing operation, and the communication/cutoff of the negative pressure source to the negative pressure operating mechanism is controlled by the switching control of the negative pressure changeover switch, and the air conditioning mode is changed by the pressing operation. BACKGROUND ART Air conditioning control devices that are configured to switch to a mode corresponding to a push lever have come to be suitably used. Therefore, in Utility Application No. 74031/1987, the applicant of the present application previously developed a vehicle air conditioning control system in which a plurality of plate cams were installed between a plurality of push levers and a plurality of negative pressure changeover switches. are arranged in an overlapping state, and by selectively pressing the plurality of push levers, the plate cams are moved relative to each other according to the push lever operated by the pressing operation, whereby a plurality of negative pressures can be switched. An air conditioning control device has been proposed in which a switch is operated in conjunction with the pressed lever to switch the air conditioning mode to the air conditioning mode corresponding to the pressed lever. In such an air conditioning control device, the operational feeling can be improved and the device itself can be made more compact due to its structure. By the way, in the case of a vehicle air conditioning control device having such a structure, it is necessary to provide a display function to externally display which air conditioning mode the air conditioning device is set to. It is preferable to Therefore, when providing such a display function, for example, using wires, cam plates, etc.
When any one of the push levers is selectively pressed, a known interlocking/locking mechanism is adopted that causes all other push levers to return and locks the pressed push lever in the pressed state. By holding the push lever corresponding to the set air conditioning mode in the pressed state,
In addition to a structure in which the push lever itself has a set air conditioning mode display function, or such an interlocking/locking mechanism, a switch mechanism is provided for each push lever, and the air conditioning mode corresponding to the push lever held in the pressed state is set. A structure in which the information is displayed externally using a lamp or the like will be suitably adopted. However, since the interlocking/locking mechanism that provides such a setting mode display function is composed of wires, cam plates, etc. as is well known, when a certain push lever is pressed,
If any other push lever is pushed in with a weak operating force, or if two or more push levers are pushed in at the same time, all push levers will remain in the operating state while the cam plate and negative pressure switch remain in operation. As a result, the set air conditioning mode could not be displayed effectively, and furthermore, there was a risk of erroneous display. Therefore, as a method to prevent such erroneous display of the set air conditioning mode, for example, a push lever for switching to a predetermined air conditioning mode, preferably an air conditioning mode such as "AUTO" which is particularly frequently used, has been proposed. , a lever driving means such as a solenoid that provides an operating force for pressing the push lever is attached, and when all other push levers are held in the returned state, this driving means is automatically operated. By doing so, it is conceivable to adopt a structure in which the air conditioning mode state can be switched to a predetermined reference air conditioning mode state. However, when the operating force of a predetermined drive means such as a solenoid is used to press the push lever, operate the plate cam, and change the interlocking state of the negative pressure switch, the drive means is On the other hand, it is necessary to set a considerable output (approximately 800g), so it is unavoidable to increase the size of such a drive means, and because the output of the drive means is large, the amount of energy generated during its operation is unavoidable. This poses a problem in that the operating noise caused by the sliding or contact of parts becomes abnormal and causes discomfort to the user. This was not a satisfactory air conditioning control system. (Solution Means) Here, the present invention has been made against the background of the above-mentioned circumstances, and its characteristics are (a) that the front part is arranged in a row;
a plurality of push levers each corresponding to a predetermined air conditioning mode; (b) a front wall portion of the housing disposed between a plurality of negative pressure actuating mechanisms for switching the air conditioning mode and a predetermined negative pressure source; a plurality of negative pressure switches that allow or block communication between the predetermined negative pressure source and the plurality of negative pressure operating mechanisms by moving an operating member protruding from the front wall portion; a switch; (c) arranged behind the plurality of push levers so as to be superimposed on each other and along the arrangement direction of the plurality of push levers, and responsive to an alternative pressing operation of the plurality of push levers; The push levers are respectively moved relative to each other in the longitudinal direction in response to the operated push levers, and each is immovably engaged with the operating member of a different one of the plurality of negative pressure changeover switches in the longitudinal direction. a plurality of longitudinal plate cams that are brought together and moved in the longitudinal direction to move the engaged operating member of the negative pressure changeover switch along the front wall of the housing; By selectively pressing a plurality of push levers, the plurality of plate cams are moved relative to the push lever operated by the push lever, thereby causing the plurality of negative pressure changeover switches to move according to the push lever operated by the push operation. In the above-mentioned vehicle air conditioning control device, the air conditioning mode is switched and set to the air conditioning mode corresponding to the pressed lever by switching the air conditioning mode in response to the push lever.
a drive mechanism that automatically returns the plurality of push levers to full return based on a predetermined actuation signal to set a predetermined air conditioning mode; (e) energizing the plurality of plate cams;
and biasing means for moving and holding the plurality of plate cams at a predetermined air conditioning mode position given by the drive mechanism when none of the plurality of push levers are pressed, The purpose is to switch to a predetermined air conditioning mode when the air conditioner is fully restored. (Effect of the invention) In the vehicle air conditioning control system constructed according to the invention, when the plurality of push levers are all in the reset state, the plurality of negative pressure switches always operate in a predetermined air conditioning mode. The switching state will be set to the switching state that will cause the switching to occur. Therefore, in such a vehicle air conditioning control device, when all of the plurality of push levers are in the reset state, the air conditioning mode developed under such a state is displayed as the set air conditioning mode, so that the above-mentioned , erroneous display of the set air conditioning mode can be effectively avoided. Furthermore, since the air conditioning control device having the structure according to the present invention is provided with a drive mechanism that automatically returns all the push levers and sets the switching to the predetermined air conditioning mode, the drive mechanism By installing the operation section that controls the operation of the drive mechanism independently from the main body of the air conditioning control device, it is possible to change the air conditioning mode by remote control. The operability of the air conditioning control device is improved by installing the air conditioning control device near the handle and setting the predetermined air conditioning mode that is activated when the push lever is fully returned to the air conditioning mode that is particularly frequently used.
Furthermore, the running safety of the vehicle can be effectively improved. In a vehicle air-conditioning control device having such a structure, the switching setting for a predetermined air-conditioning mode by the operation of the driving means causes the other push levers to be released from the locked state and maintained in the returned state. This can be easily achieved by setting the switching, and since there is no need to operate the cam plate by the drive means, the operating force required for the drive means is low. Therefore, problems such as the problem of installation space due to the increase in the size of the drive means and the discomfort caused by operation noise are avoided.
There is no such thing as being triggered. (Example) In order to clarify the present invention more specifically, an example having a structure according to the present invention will be described in detail below with reference to the drawings.
In addition, in this example, “FACE”, “BI-LEVEL”,
An air conditioning control device that controls the operation of an air conditioner that can be set to switch between six air conditioning modes: "FOOT", "FOOT/DEF", "DEF", and "AUTO", which the applicant previously developed A case will be described in which the present invention is applied to a structure conforming to the vehicle air conditioning control device proposed in Utility Application No. 1987-74031. First, FIG. 1 shows a plan view of the air conditioning control device of this embodiment with the upper mounting plate removed. As is clear from this figure, in the air conditioning control device of this embodiment, five push lever devices 10, a plurality of plate cams 12, and five negative pressure changeover switches 14 are attached to upper and lower mounting plates 16, 18. It has an integrally assembled structure. Each push lever device 10 is provided by the applicant of the present application.
This was disclosed in the above-mentioned Utility Application No. 60-74031, and a vertical sectional view thereof is shown in FIG. That is, in the case of the push lever device 10, the housing 20 has a hollow box shape that opens rearward (right side in FIG. A push lever 26 with a rectangular cross section is provided so as to be slidable in the direction.
The push lever 26 includes a flange 28 located between the front wall 22 of the housing 20 and the partition wall 24, and is actuated by a compression coil spring 30 interposed between the flange 28 and the partition wall 24. It is always urged forward. The push lever 26 can be slid in the axial direction within the housing 20 against the biasing force of the coil spring 30 by pressing its tip with a finger or the like. ing. In addition, in this push lever device 10, notch grooves 32 reaching from the rear end face to the partition wall 24 are formed in both walls of the housing 20 facing each other in the left and right direction.
The plate cams 12 are arranged to pass through these notched grooves 32, while the protrusion of the push lever 26 that protrudes from the partition wall 24 has an isosceles triangular planar cross section. The protruding portion has the above-mentioned plate cam 12.
This is an operating section 34 that allows the user to move the . In the air conditioning control device of this embodiment,
As shown in FIGS. 1 to 3, the push lever device 10 has projections 36 and 3 formed on the upper and lower walls of the housing 20.
8 is fixed by being fitted into the notch holes formed in the upper and lower mounting plates 16 and 18, respectively, and the front end of the push lever 26 protrudes forward from the front end surface of the mounting plates 16 and 18. in,
They are arranged in a line with substantially constant gaps between them. Furthermore, in this embodiment, as shown in FIGS. 1 and 3, in this arrangement state, the front wall surface of the housing 20 of the push lever device 10 and the lower mounting plate 18 are A thin plate-shaped lock plate 40 is disposed in between so as to be slidable along the wall surface. This lock plate 40 has locking protrusions 44 at positions corresponding to the respective push levers 26, and
At one end of the longitudinal direction, the lower mounting plate 1
The lock plate 40 is always biased in one direction (to the left in FIGS. 1 and 3) by a spring 42 disposed between the lock plate 40 and the lock plate 40.
The locking projections 44 are held in contact with the side surfaces of the respective push levers 26. On the other hand, an engagement protrusion 46 having a substantially triangular planar shape is provided on the surface of each push lever 26 on which the locking protrusion 44 comes into contact.
When pressed, the locking protrusion 44 is guided by the inclined surface of the engagement protrusion 46,
As a result, the lock plate 40 is moved against the biasing force of the spring 42. As shown in FIG. 4, when the push lever 26 is pushed to a predetermined position,
The locking action of the locking protrusion 44 of the lock plate 40 on the front surface of the engagement convex portion 46 of the push lever 26 restricts its protrusion and holds it in the pushed-in position. Furthermore, in this holding state, any other push lever 26
When the lock plate 40 is pressed, the lock plate 40 is moved.
The push lever 26 held in the pushed position is released. That is, due to the locking action of the locking protrusion 44 of the lock plate 40 on the engagement protrusion 46 of the push lever 26,
An interlocking and locking mechanism is configured to selectively hold the push levers 26 in the pushed position. On the other hand, each of the negative pressure changeover switches 14 is similar to the push lever device 10, as the cross-sectional view thereof is shown in FIG. It has a similar structure. That is, in this figure, 48 is a housing, which has a hollow box shape that is long from side to side. The rear wall 50 of the housing 48 is provided with three through holes 52 that penetrate inside and outside the housing 48.
are communicated with the external space through ports 56 formed in port members 54 attached to the outer surface of the rear wall portion 50, respectively. In addition, the housing 48
A longitudinally rectangular seal member 58 made of a rubber elastic body is housed in the inner space of the housing 48 so as to be in sliding contact with the inner surface of the rear wall portion 50 and movable in the longitudinal direction of the housing 48 . An operation member 60 and a slide member 62 are provided on the front surface of this seal member 58.
is arranged, and the operating section 64 of the operating member 60
By sliding them, they can be moved integrally in the longitudinal direction within the housing 48. On the other hand, the seal member 5
8 has two recesses 68 , 68 surrounded by a protruding strip 66 on its back side, which are adjacent to each other in the longitudinal direction and independent from each other, and also have two recesses 68 , 68 surrounded by a protrusion 66 , which are adjacent to each other in the longitudinal direction and are independent from each other. It is constantly pressed against the inner surface of the rear wall portion 50 by a coil spring 70 interposed therebetween. Therefore, when the seal member 58 is moved to one side in the longitudinal direction of the housing 48 by the sliding operation of the operating portion 64, the recess 68 on one side opens on the same side. One of the through holes 52 is blocked off from the other two through holes 52, 52, while the other recess 68 blocks the other two through holes 52, 52.
It is designed to communicate with each other. In short, such a negative pressure changeover switch 14 can be operated by sliding the operating section 64 of the operating member 60 in the longitudinal direction of the housing 48 to open the center one of the three ports 56 provided at the rear thereof.
Two ports 56, 56 that are selectively communicated with one of the two ports 56 on both sides, while the remaining ports 56 are communicated with them.
It is now possible to reliably block the In this embodiment, five negative pressure changeover switches 14 having such a structure are installed in the housing 4 as shown in FIGS. 1 and 4.
The outer surface of the front wall portion 72 of 8 is connected to the push lever device 1.
They are arranged and fixed in a line between the upper and lower mounting plates 16 and 18 with a substantially constant gap between them, in contact with the rear end surface of the 0. Further, as shown in FIG. 6, the plate cam 12 is composed of four thin plate cams 12 having the same length, and each of the plate cams 12 has one end edge in the width direction. Push lever device 10
5 that engages with the action portion 34 of the push lever 26 of
Two first notched grooves 74 are provided. Further, on the other end edge side in the width direction, a second notch groove 76 that engages with the operating portion 64 of the operating member 60 of a mutually different one of the negative pressure changeover switches 14 is provided. The operating portion 64 of another negative pressure changeover switch 14 that does not engage with the two notched grooves 76 is accommodated. The third notch groove 78 is formed with a larger width than the second notch groove 76. As described above, these four plate cams 12 are fitted into the notch grooves 32 formed in the housing 20 of the push lever device 10.
They are disposed so as to be able to slide relative to each other in the longitudinal direction, and when a specific push lever 26 is alternatively pressed, each negative pressure changeover switch 14 is set to a position corresponding to that specific push lever 26. The operating portion 64 is slid to be in the operating state. That is, these four plate cams 12 are moved relative to each other in the longitudinal direction when a specific one of the push levers 26 is pressed, and take a relative position corresponding to that specific push lever 26. These first cutout grooves 74 are formed, and furthermore, at the relative position of the plate cam 12, the communication state of the five negative pressure changeover switches 14 corresponds to the specific push lever 26. The second notch groove 76 and the third notch groove 7 are operated to switch to the state.
8 is formed. In addition, under such a state in which the plate cam 12 is disposed, as shown in FIG. 80, these four plate cams 12 are always aligned in one longitudinal direction (right direction in the figure).
is energized by As shown in FIG. 7, this biasing device 80 is composed of a housing 86 in which a coil spring 82 and a pressing plate 84 are housed. More specifically, this housing 86
As shown in FIG. 9 and FIG. 9, it has a substantially rectangular cylindrical shape, and both walls facing each other in the left and right direction each have a wall extending a predetermined length in the axial direction from one end edge. Notched grooves 88, 88 are formed, and the four plate cams 12 are fitted into the notched grooves 88 at one longitudinal end thereof, as will be described later. Further, a spring support piece 92 having a cylindrical projection 90 at the center of the inner surface is integrally provided at the open end of the housing 86 on the side opposite to the side where the notch groove 88 is provided. Further, as shown in FIG. 7, a coil spring 82 is disposed within such a housing 86.
is accommodated, and one end side thereof has a spring support piece 92.
A rectangular thin plate-like pressing plate 84 is housed and arranged on the side opposite to the side where the coil spring 82 is supported. That is, the pressing plate 84 is housed so as to be movable in the axial direction so as to close the opening on the side where the notched groove 88 is provided in the housing 86, and is constantly held by the biasing force of the coil spring 82. It is urged outward. In addition,
Inner protrusions 94 of a predetermined height are provided on the vertically opposing walls of the opening on the side where the press plate 84 is disposed in the housing 86, and these inner protrusions 94, 94 The outward movement position of the press plate 84 is regulated at . The projections 96 and 98 provided on the outer surfaces of the upper and lower walls of the housing 86 are fitted into the notch holes provided in the upper mounting plate 16 and the lower mounting plate 18, respectively. The biasing device 80 is disposed with one longitudinal end of the plate cams 12 accommodated in a notched groove 88 provided in the housing 86, so that the plate cams 12 are always , is biased in one longitudinal direction (rightward in FIG. 1). By the way, the movement position of these plate cams 12 relative to the urging force of the urging device 80 is restricted by the contact of the first notched groove 74 with the side surface of the action portion 34 of the push lever 26. It's getting old. Therefore, when any of the push levers 26 is pressed, as described above, the predetermined plate cams 12 are moved so that the plate cams 12 take the relative positions corresponding to the pressed push levers 26. It is caused to move relatively against the urging force of the urging device 80,
By locking the push lever 26 in the pressed state, the plate cams 12 are held at the predetermined relative positions. on the other hand,
When all the push levers 26 are in the returned state, based on the urging force of the urging device 80, all of the plate cams 12 are regulated by the push levers 26 in the returned state, and the plate cams 12 are moved farthest from the urging device 80. It will be moved and held in position. Then, at the relative position of the plate cam 12 expressed by the push lever 26 in the fully restored state, the communication state of the negative pressure circuits in the five negative pressure changeover switches 14 is switched to a predetermined communication state. Thus, the second notch groove 76 in the plate cam 12 is formed. Furthermore, in this embodiment, as shown in FIG. 1, a lever device 100 is provided for fully returning the five push levers 26 as described above.
is arranged between two push lever devices 10, 10 which are arranged next to each other. As shown in FIG. 10, this lever device 100 includes a sliding portion 10 that has a hollow box shape that opens downward.
2, and an engagement lever 104 of a predetermined length formed to protrude from the outer surface of the front wall of the sliding portion 102. Push lever devices 1 are disposed on both sides of the outer surfaces of both side walls of the sliding portion 102.
It is arranged so that it can slide in the front and rear direction while being guided by the outer surfaces of the side walls 0 and 10. Also,
An engagement convex portion 105 is formed on the side surface of the engagement lever 104, and is formed to have substantially the same shape as the portion corresponding to the push lever 26 of the push lever device 10. Further, as shown in FIG. 10, a solenoid coil 106 that applies an operating force to the lever device 100 is disposed on the upper surface of the upper mounting plate 16 where the lever device 100 is disposed. , is fixed. A rod 112 is attached at one end to the front end of the movable core 108 of the solenoid coil 106, which extends through an elongated hole 110 formed in the upper mounting plate 16. The other end of the rod 112 is engaged with an engagement hole 114 formed in the upper wall of the sliding portion 102 of the lever device 100. Furthermore, the movable core 108 has a flange portion 116 near its tip, and is always kept in the forward direction (see FIG. center left). As a result, the lever device 100 is always urged forward, and the front surface of the sliding portion 102 is attached to the lock plate 4.
It is held in a state where it is brought into contact with zero, and is made to slide back and forth in accordance with the operation of the solenoid coil 106. Therefore, by operating a switch (not shown) that controls the conduction of current to the solenoid coil 106, activating the solenoid coil 106, and moving the lever device 100 backward, the engagement lever can be opened. The lock plate 40 is moved by the action of the engagement protrusion 105 of 104,
As a result, the locking action on all the push levers 26 in the pressed state is released, and the push levers 26 are held in the fully restored state. As is clear from this, in the air conditioning control device of this embodiment, the lever device 100 and the solenoid coil 106 automatically return the plurality of push levers 26 to full return based on a predetermined actuation signal. A drive mechanism is configured to do this. In addition, in the case of this lever device 100, when the lever device 100 is moved backward by the solenoid coil 106 as described above, the engagement lever 1
Lock plate 4 for engagement convex portion 105 of 04
0, the lever device 100 is held in a backward moving state by the locking action of the lever device 100, but since the lever device 100 is always urged forward by the urging force of the coil spring 120, other push levers 2
By pressing 6 and moving the lock plate 40, it is returned to its original protruding state. Note that the switch that controls the conduction of current to the solenoid coil 106 is preferably installed at a location where it is easy to operate, such as the meter cluster near the steering wheel. In order to further clarify the interlocking mechanism in the air conditioning control device of the present embodiment and the various connection circuit forms expressed thereby, which have been explained above,
The specific connection state will be shown and explained below. That is, as shown in FIG. 1, each push lever device 10 and each negative pressure changeover switch 14 used in this example are arranged as 10A, 10B, and 10B, respectively, from the left side in the same figure.
10C, 10D, 10E and 14A, 14B,
14C, 14D, and 14E, and the ports 56 of each negative pressure changeover switch 14 are respectively 56a, 56b, and 56c from the left side in the same figure, the push lever 26 of each push lever device 10 or the lever device 100 is Each port 56 formed on each plate cam 12 is configured so that communication of each port 56 of each negative pressure changeover switch 14 is controlled by pressing (operation control) operation, as shown in Table 1 below. Notch grooves 74, 76,
The formation position and direction of 78 are set. In Table 1 below, the ports 56 that communicate with each other are indicated by their subscripts.

[Table] Also, each port 56 of each negative pressure changeover switch 14 in such an air conditioning control device is connected to a first and second AUTO negative pressure source, as shown in FIG. In other words, a negative pressure source 122, 1 with an ON/OFF switch based on the AUTO signal.
24, negative pressure source 126, diaphragm 128 for DEF damper, diaphragm 13 for FACE damper
0 or FOOT damper diaphragm 132
It is connected to each hose 134 or is directly exposed to the atmosphere. Therefore, by controlling the communication state of each negative pressure changeover switch 14 based on the pressing (operation control) operation of the push lever 26 of the push lever device 10 or the lever device 100, as shown in Table 1 above, each The communication state of the negative pressure source with respect to the diaphragm is controlled by switching. The communication state of the pneumatic circuit based on each lever operation is shown in Table 2 below.

[Table] As is clear from the second table, in the air conditioning control device of this embodiment, the air conditioning state changes to "FACE" and "FACE", respectively, according to the pressing operation of the push lever 26 of the push lever devices 10A to 10E.
The air conditioning mode can be switched to five modes: "BI-LEVEL,""FOOT,""FOOT/DEF," and "DEF," and when the lever device 100 is actuated, the air conditioning mode is "AUTO."
They are set so that they can be obtained alternatively. In addition, in the air conditioning control device in this embodiment, as described above, the DEF section is provided for each of the diaphragms 128, 130, and 132 whose communication state with respect to the negative pressure source is switched and controlled by the air conditioning control device. , dampers are connected to the air passages that open in the FACE section or the FOOT section and connect/block each passage, and the operation of these dampers is controlled according to the operating state of each diaphragm 128, 130, 132. The structure is such that the air conditioning mode can be switched to a predetermined air conditioning mode by doing so. In the case of a FOOT damper disposed in an air passage that opens in the FOOT section, when the FOOT damper diaphragm 132 connected thereto is connected to a negative pressure source and activated, the passage is communicated. When the diaphragm 132 is opened to the atmosphere, the passage is controlled to be in the blocked state, while in the case of the DEF damper and the FACE damper, the diaphragm 128 or 130 connected thereto is The air passage is controlled to be in a closed state when connected to a negative pressure source, and to be controlled to be in a communicated state when opened to the atmosphere. As described above, the structure of the air conditioning control device and its specific operation example in this embodiment have been explained. By holding the push levers 26 in the pressed state, or by operating the lever device 100 and holding all the push levers 26 in the reset state, each preset air conditioning mode can be obtained. The air conditioning mode set by operating the lever device 100 has its relative position regulated by the urging force of the urging device 80 and the action portion 34 of the push lever 26 in the return state. This is achieved when the negative pressure changeover switch 14 is set by the two plate cams 12, so when one push lever 26 is pushed in,
Without activating the lever device 100, for example, all the push levers 26 are brought into the reset state by pressing another push lever 26 with a weak operating force or by pressing two push levers 26 at the same time. Even in such cases, the set air conditioning mode in such an air conditioner is always automatically switched to the "AUTO" air conditioning mode. Therefore, in the air conditioning control device of this embodiment, when any push lever 26 is in the pressed state, the air conditioning mode corresponding to that push lever 26 is activated, and neither of the push levers 26 is in the pressed state. in case of,
Since the "AUTO" air conditioning mode is always activated, the set air conditioning mode can be displayed externally depending on the state in which the push levers 26 are pressed, and this erroneous display of the set air conditioning mode can be completely eliminated. You get it. In addition, in the air conditioning control device in this embodiment, since the lever device 100 is actuated by the solenoid coil 106 disposed on the upper surface of the upper mounting plate 16, the operation control is performed by the air conditioning control device. This can be done using an ON/OFF switch for the solenoid coil 106, which is arranged independently of the control device main body. Therefore, in the air conditioning control device of this embodiment, only the operating section of the "AUTO" setting lever, which is relatively frequently used, is placed independently from the other levers in a place where it is easy to operate, such as near the steering wheel. This makes it possible to effectively improve the usability and operability of the air conditioning control device, as well as the driving safety of the vehicle. As is clear from FIG. 1, the lever device 100 of this embodiment can be operated by directly pressing the engagement lever 104 with a finger or the like. has been done. As is clear from the above description, in order to obtain the "AUTO" air conditioning state in such an air conditioning control device, the lock plate 40 is moved by disengaging all the push levers 26. Just by forcing
Since it is obtained by the action of the urging device 80, the set output to the solenoid coil 106 that activates the lever device 100 can be small, and therefore the problem of installation space due to the enlargement of the solenoid coil 106 can be avoided. The operating noise can be effectively reduced without causing
There is no need for them to become a problem. Although one embodiment having a structure according to the present invention has been described in detail above, this is a literal illustration, and the present invention should not be construed as being limited to such a specific example. For example, in the above embodiment, the air conditioning mode is set to "FACE", "BI-LEVEL", "FOOT",
The case where the present invention is applied to an air conditioning control device that can switch between six modes of "FOOT/DET", "DEF" and "AUTO" has been explained, but the present invention is applicable to air conditioning for combinations of other air conditioning modes. Of course, it can be applied to the control device, and also in the air conditioning mode that is activated when the lever device 100 is actuated, that is, when all the push levers 26 are in the fully reset state, it is not limited to the "AUTO" mode, but can also be applied to other modes. It is possible to set it to any air conditioning mode. Further, in the air conditioning control device in the above embodiment, each push lever 26 itself has a setting mode display function, but in addition, a switch mechanism is provided for each push lever 26, When the push lever 26 is in the pressed state, the push lever 2
6, and when the push levers 26 are in the fully reset state, the air conditioning mode "AUTO" is displayed externally by lamps or the like. Furthermore, in the air conditioning control device in the above embodiment, the interlocking/locking mechanism for selectively holding each push lever in the pressed state was constituted by the lock plate 40, but other known wires, etc. It is also possible to configure using Furthermore, in the embodiment described above, the lever drive means for operating the lever device 100 was constituted by the solenoid coil 106, but it is also possible to constitute this lever drive means by a motor or the like. Although not listed in detail, the present invention may be implemented with various changes, modifications, improvements, etc. based on the knowledge of those skilled in the art, and such embodiments may be implemented in accordance with the present invention. It goes without saying that any of these are included within the scope of the present invention as long as they do not depart from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an air conditioning control device as an embodiment of the present invention with its upper mounting plate removed, and FIG. 3 is a longitudinal sectional view of the push lever device, FIG. 3 is a partially cutaway front view of the air conditioning control device shown in FIG. 1, for explaining the arrangement of the lock plate, and FIG. FIG. 5 is a partially cutaway view showing an enlarged view of FIG. 1 to explain the pressing state of the switch, and FIG. FIG. 6 is a plan view showing the plate cam used in the embodiment shown in FIG. 1, and FIG. 7 is a plan view showing the plate cam used in the embodiment shown in FIG. FIG. 8 is a front view showing the housing of the urging device, and FIG. 9 is a cross-sectional view in FIG.
Fig. 0 is a cross-sectional explanatory diagram showing the arrangement of the lever device and the solenoid coil, and Fig. 11 is an explanatory diagram showing the connection state of each negative pressure source or each diaphragm to each port of the negative pressure changeover switch in this air conditioning control device. It is a diagram. DESCRIPTION OF SYMBOLS 10... Push lever device, 12... Plate cam, 14... Negative pressure changeover switch, 20... Housing (push lever device), 26... Push lever, 40... Lock plate, 44... Locking protrusion, 46... Engagement convex portion, 48...Housing (negative pressure changeover switch), 60...Operation member, 64...
...Operation portion, 72...Front wall portion, 74...First cutout groove, 76...Second notch groove, 78...Third notch groove,
80...Biasing device, 82...Coil spring,
84... Pressing plate, 86... Housing (biasing device), 100... Lever device, 106... Solenoid coil, 122, 124... Negative pressure source for AUTO, 126... Negative pressure source, 128, 130, 1
32...Diaphragm.

Claims (1)

[Claims for Utility Model Registration] (a) A plurality of push levers arranged in a row on the front surface, each corresponding to a predetermined air conditioning mode; (b) A plurality of negative pressures for switching the air conditioning mode. An operating member disposed between the actuating mechanism and a predetermined negative pressure source and protruding from the front wall of the housing is moved along the front wall, whereby the predetermined negative pressure source and the a plurality of negative pressure changeover switches that allow or block communication with the plurality of negative pressure operating mechanisms; (c) superimposed on each other behind the plurality of push levers;
The plurality of push levers are disposed along the arrangement direction of the plurality of push levers, and in response to an alternative pressing operation of the plurality of push levers, each of the push levers is arranged relative to each other in the longitudinal direction in response to the pressed push lever. While being moved, each of the negative pressure changeover switches is engaged with an operating member of a different one of the plurality of negative pressure changeover switches in a relatively immovable manner in the longitudinal direction, and is engaged by the movement in the longitudinal direction. A plurality of longitudinal plate cams are provided for moving the operation member of the negative pressure changeover switch along the front wall of the housing, and the plurality of plate cams are moved by selectively pressing the plurality of push levers. is moved relative to the push lever operated by the press, thereby causing the plurality of negative pressure changeover switches to be switched in conjunction with the push lever operated by the press, thereby changing the air conditioning mode according to the push lever operated by the press. A vehicle air conditioning control device configured to switch and set an air conditioning mode corresponding to a push lever, comprising: a drive mechanism that automatically returns the plurality of push levers to full return based on a predetermined actuation signal to set the air conditioning mode to a predetermined air conditioning mode; urging means for urging a plurality of plate cams to move and hold the plurality of plate cams at a predetermined air conditioning mode position provided by the drive mechanism when none of the plurality of push levers is pressed; 1. An air conditioning control device for a vehicle, characterized in that a predetermined air conditioning mode is set when the plurality of push levers are in a fully restored state.