JPH10272914A - Mode changeover control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively correspond to each mode with simple constitution by opening an switch in a position corresponding to a mode to generate electric potential between two electrodes so as to drive a motor, and short-circuiting between the opened switches by a short circuit member interlocked with the motor to stop the motor. SOLUTION: A device 2 is composed of a motor 4 with stop positions corresponding to a plurality of modes, a moving short circuit terminal 5, and a plurality of electrode terminals 6A-6F and a ground side terminal 7 short- circuited by the short circuit terminal 5. A switch in a position corresponding to the mode is opened, and a pattern terminal is divided in two electrode groups. When the electric potential of the group on the side with the short circuit terminal 5 positioned becomes zero, electric potential is generated between both groups, and the motor 4 can be driven. A switch opened in a position of moving the short circuit terminal 5 in association with the rotation of the motor 4 is short-circuited to make electric potential between the electrodes zero, and the motor 4 can be positively stopped in a target position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mode switching control device for switching a plurality of modes of an air conditioner or the like according to a desired mode.

[0002]

2. Description of the Related Art A push-button type heater control device for a vehicle disclosed in Japanese Utility Model Application Laid-Open No. 62-10107 (Cited Example 1) has a mode switching button disposed on a mode switching panel and a fan disposed on a fan switching panel. A switching button, and one of the mode switching panel or the fan switching panel is provided with an automatic button for automatically performing mode switching and fan switching. The automatic button is a non-locking button, and the other mode switching buttons are locked. It is formed by buttons.

A mode switching control device for a vehicle air conditioner disclosed in Japanese Patent Application Laid-Open No. Sho 62-210116 (Cited Example 2) sets a vent mode to a vent mode (VEN).
T) mode, bi-level (B / L) mode, heat (H
An operation switch (10) provided corresponding to an EAT) mode and a defroster (DEF) mode, a printed circuit board disposed on a lower surface side of a worm wheel linked to an electric motor, and an upper surface of the worm wheel A plurality of arc-shaped fixed contacts (2
2; 23a, 23b; 24a, 24b; 25a, 25
b; 26a, 26b) and a program switch (20) constituted by a single sliding contact (27) fixed to the lower surface of the worm wheel so as to slide on these fixed contacts. You. Further, the fixed contact is one fixed contact (2) continuous in a predetermined range.
2) and fixed contacts (23a, 23b; 24a, 24b; 25a,
25b; 26a, 26b), and the motor stops when the sliding contact comes to a corresponding position.

[0004]

However, in the above cited examples 1 and 2, there is a problem that the parts cost and the manufacturing cost are increased because the switches for setting the respective modes are independently constituted. . Furthermore, in Reference 2, since the means for setting the rotation direction of the motor and the means for stopping the motor have a complicated configuration,
Since fine settings are required for each component (comparator, voltage dividing resistor), a problem arises in which high accuracy is required for each component.

Therefore, an object of the present invention is to provide a mode switching control device which can surely cope with each mode with a simple configuration.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a drive unit having a stop position corresponding to each of a plurality of modes, a short-circuit terminal that moves in conjunction with the operation of the drive unit,
An actuator device having a plurality of electrode terminals that are short-circuited by the short-circuit terminals at positions corresponding to each of the plurality of stop positions of the drive unit, and a ground-side terminal that is always in contact with one end of the short-circuit terminals; An instruction unit arranged to instruct a display corresponding to the plurality of modes, a pattern terminal formed on a printed circuit board in the operation panel along a moving direction of the switch, and an operation in conjunction with the operation of the instruction unit A panel switch section comprising a switch section having a plurality of movable contacts for short-circuiting the pattern terminals except between pattern terminals corresponding to each mode, and each of the pattern terminals located at both ends of the plurality of pattern terminals. A power supply terminal to be connected; and a power supply disposed between the power supply terminals, the power corresponding to a potential difference and a current direction generated between the power supply terminals. In that it comprises a driving means for supplying (claim 1).

[0007] With the above arrangement, a plurality of pattern terminals formed on the printed circuit board correspond to the respective mode terminals, and the switch unit moved to a position corresponding to the mode specified by the indicating unit. Only the pattern terminals corresponding to the designated mode are cut off, and the other pattern terminals are short-circuited. by this,
Since the plurality of pattern terminals are divided into two groups with the cut-off pattern terminals as boundaries, the electrode terminals of the actuator device connected to each pattern terminal are also divided into two groups. Then, since the short-circuit terminal of the actuator device is short-circuited to the ground by the short-circuit terminal, the potential becomes zero and a potential difference occurs between the two groups. Accordingly, the driving unit drives the driving unit based on the potential difference and the direction of the current caused by the potential difference, and moves the short-circuit terminal interlocked with the driving unit from the ground side to the side having the potential. Then, by short-circuiting between the electrode terminals connected to the pattern terminals from which the short-circuit terminals are cut off, and furthermore, by short-circuiting these terminals and the ground side, all the pattern terminals are communicated with the ground side. A potential difference occurs between the terminals, and the driving means can stop driving the driving unit.

As a result, the configuration of the panel switch and the configuration of the actuator device can be simplified, and the driving unit can be stopped at a predetermined mode position.
The above object can be achieved. Further, according to the above configuration, since a large current for driving the driving section does not flow between the pattern terminals, it can be formed simultaneously with the pattern wiring on the printed circuit board, so that the above-mentioned problem can be achieved.

In the present invention, the panel switch is a dial type in which the indication portion is a rotary knob, and the pattern terminals are formed in a circular shape at predetermined intervals in a radial direction. Preferably, the panel switch, the indicator is a slide knob,
A slide type in which the pattern terminals are formed along the sylad direction may be employed (claim 3).

Further, in the present invention, it is preferable that the panel switch is provided with clip means at positions corresponding to a plurality of modes. Thus, the indicator and the switch of the panel switch can be reliably stopped at the predetermined mode position.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

A mode switching control device according to the present invention is for setting an intake air mode or a blowing mode in a vehicle air conditioner, for example. In the case of an intake air mode, an intake for switching between an inside air inlet and an outside air inlet is provided. The door is driven to switch between the inside air circulation mode, the outside air introduction mode, and the air-fuel mixture mode. In the case of the blowout mode, the mode door is driven to drive the vent mode (VENT), the bi-level mode (B / B).
L), a foot mode (FOOT), a differential foot mode (D / F), and a defrost mode (DEF), and an actuator device for driving the intake door or the mode door (control member); And a panel switch for setting a mode. Hereinafter, an embodiment of the present invention will be described using a mode switching control device 1 used for switching the blowing mode shown in FIG. 1 as an example.

The actuator device 2 constituting the mode switching control device 1 has a plurality of modes (VENT, B
/ L, FOOT, D / F, and DEF), a driving unit (motor) 4 having a stop position at a position corresponding to each of the driving units, a short-circuit terminal 5 that moves in conjunction with the motor 4, and is driven by the motor 4. A plurality of electrode terminals 6 (6A to 6F) short-circuited by the short-circuit terminals at positions corresponding to the plurality of stop positions of the member to be connected, and a ground-side terminal 7 to which one end of the short-circuit terminal 5 always contacts. Things.

In this actuator device 2,
The electrode terminals 6 are alternately arranged so that adjacent electrode terminals 6 overlap in a predetermined range (d) at positions corresponding to the respective blowing modes, and are adjacent when the short-circuit terminals 5 are located in this overlapping range. The two electrode terminals 6 and the ground terminal 7 are short-circuited.

FIG. 2A shows the panel switch section 3.
As shown in (b), an instruction unit 9 arranged on the operation panel 8 and instructing a display corresponding to the plurality of blowing modes.
And a mode switch unit 40 for setting a mode. The mode switch unit 40 further includes the instruction unit 9 on a printed circuit board arranged in the operation panel 8.
And a plurality of movable contacts that interlock with the operation of the indicator 9 and short-circuit between the pattern terminals 10 except between the pattern terminals 10 corresponding to the respective blowing modes. And a switch unit 12 having a switch 11.

As shown in FIG. 2A, the pointing unit 9 is a rotary knob in the first embodiment, and comprises a rotary knob main body 9a and a pointing arrow unit 9b.

The pattern terminals 10 are formed in an arc shape on the printed circuit board at predetermined intervals in a radial direction around the rotating shaft 13 penetrating the printed circuit board from the rotary knob main body 9a. And the first from the outermost
, A second pattern terminal 10B, a third pattern terminal 10C, a fourth pattern terminal 10D,
Fifth pattern terminal 10E and sixth pattern terminal 1
0F is formed at substantially the same central angle. Then, the pattern terminals 10A to 10F are connected to the electrode terminals 6A to 6F via connection wirings. In this embodiment, a locking recess 51 is formed at a predetermined position as a clip means in a through hole 50 formed in a printed circuit board through which the rotating shaft 13 penetrates. The projection 52 is formed so as to freely protrude in the direction.
The rotary knob main body 9a is held at a position indicated by the instruction arrow section 9b.

The switch section 12 is composed of a movable contact 11 communicating adjacent pattern terminals 10 and an arm 13 for moving the movable contact 11 integrally. The arm 13 is fixed to the rotating shaft 13. It rotates in conjunction with the instruction unit 9. Each of the pattern terminals 10A to 10F has a cutout (14AB, 14BC, 14CD, 14DE, 1) at a position corresponding to the mode so that one pattern terminal becomes non-conductive.
4EF) is formed.

The pattern terminal 10A is connected to a resistor R1.
The pattern terminal 10F is also connected to a power supply line 21 via a resistor R2, and a power supply voltage (VB) is applied to both the power supply lines 20 and 21. The pattern terminals 10A and 1A
A motor drive IC 30 as a drive unit is connected to OF, and the motor 4 is connected to the motor drive IC 30.

FIG. 1 shows that the DEF mode is selected by the instruction unit 9, the arm 13 moves to the DEF position, the mode door has already reached the DEF mode position, and
The state which reached the EF position is shown. In this state, the fifth pattern terminal 10E and the sixth pattern terminal 1E are formed by the cutouts 14EF formed in the pattern terminal 10F.
0F is a non-conductive state, in other words, as shown in FIG. 1, the switches 41 to 44 are in a conductive state and only the switch 45 is in a cut-off state. Since the electrode terminal 6E connected to the pattern terminal 10E and the electrode terminal 6F connected to the pattern terminal 10F are connected to the ground side by the short-circuit terminal 5, both the pattern terminal 10A and the pattern terminal 10F have zero potential. At the same time, the terminals 22 and 23 reaching the motor drive IC are also at zero potential, so that the motor 4 is in a stopped state.

In this state, if, for example, the VENT mode is requested and the indicating section 9 is moved to indicate the VENT mode, the arm 13 moves to the VENT position shown in FIG. The first pattern terminal 10A and the second pattern terminal 10B are cut off by the cutout portion 14AB formed in the first pattern terminal 10A, and each of the other pattern terminals 10B to 10F is moved by the movable contact 11 respectively. Are short-circuited. As a result, as shown in FIG. 3, the switch 41 is opened, the switches 42 to 45 are closed, and the first electrode group including the first pattern terminal 10A and the second electrode group including the other pattern terminals 10B to 10F. Two electrode groups of the electrode group will be formed.

In this case, the second electrode group including the other pattern terminals 10B to 10F is short-circuited to the ground side by the short-circuit terminal 5. Therefore, the potential of the first electrode group including the first pattern terminals 10A becomes VB, and the potential of the second electrode group including the other pattern terminals 10B to 10F becomes zero.
The terminal 22 leading to the motor drive IC 30 is the plus side, the terminal 2
Reference numeral 3 denotes a minus side, and the motor 4 is driven by the potential difference and the current direction to drive the air conditioning control device, in this case, the mode door to set the VENT mode. Then, the short-circuit terminal 5 moves in the direction of arrow A shown in FIG. 3 simultaneously with the driving of the motor 4, and short-circuits between the electrode terminal 6A and the electrode terminal 6B. As a result, the first electrode group and the second electrode group are short-circuited and connected to the ground side.
Both the potentials at 23 become zero, and the motor 4 stops driving.

Further, from the state shown in FIG.
When the mode is set, the arm 13 moves to the FOOT position shown in FIG. 2B, and the third pattern terminal 10C and the fourth pattern terminal 10C are formed by the cutouts 14CD formed in the third pattern terminal 10C. 10D, and the other pattern terminals are short-circuited by the movable contact 11 respectively. Thereby, as shown in FIG.
The switches 41, 42, 44, 45 are closed and the switch 44 is opened, and the first to third pattern terminals 10A
A first electrode group made up of the first to fourth electrode terminals 10D to 10F and a second electrode group made up of the fourth to sixth pattern terminals 10D to 10F are formed.

In this case, the short-circuit terminal 5 is provided on the first group side.
Is located, the first electrode group is on the ground side, and the potential of the second electrode group is at VB.
3, the terminal 23 of the motor drive IC 30 is on the positive side, the terminal 22 is on the negative side, and the motor 4 is
Rotate to the opposite side to the case shown in Fig. Along with this, the short-circuit terminal 5 moves in the direction of arrow B in the figure, and moves to the FOOT position where the electrode terminal 6C and the electrode terminal 6D are short-circuited. When the electrode terminal 6C and the electrode terminal 6D are short-circuited, all the pattern terminals 10A to 10F are short-circuited to the ground side, so that the potentials of both terminals 22 and 23 of the motor drive IC 30 become zero. Thus, the driving of the motor 4 is stopped.

As described above, by opening the switch at the position corresponding to the target position, the pattern terminal is divided into two electrode groups, and the potential of the electrode group on the side where the short-circuit terminal 5 is located becomes zero. Since a potential can be generated between the two electrode groups and the direction of the current can be determined, the motor can be driven to a position corresponding to the mode with a simple structure.

In addition, the short-circuit terminal 5
Since the open switch can be short-circuited at a position corresponding to the target position to move the motor to zero the potential between the electrodes, the motor can be reliably stopped at the target position. Furthermore, in the above configuration, since the current for driving the motor 4 does not flow through the switches 41 to 45 that open and close, the switches 41 to 45 can be easily formed by pattern wiring.

As shown in FIGS. 5A and 5B, the panel switch section 3 according to the second embodiment is arranged on the operation panel 8 and instructs display corresponding to the plurality of blowing modes. And a mode switch unit 40 ′ for setting a mode. The mode switch unit 40 ′ moves the instruction unit 9 ′ on a printed circuit board arranged in the operation panel 8. Pattern terminal 10 'formed along the direction, and the pattern terminal 1 corresponding to each blowing mode in conjunction with the operation of the indicator 9'.
A switch section 12 ′ having a plurality of movable contacts 11 ′ that short-circuits between the pattern terminals 10 ′ except between 0 ′. In the panel switch unit 3 of the second embodiment shown in FIGS. 5A and 5B, the instruction unit 9 '
The pointing unit 9 shown in (a) is a linear moving knob, and a sliding knob body 9a 'and a pointing arrow unit 9b'.
And a sliding hole 90.

The pattern terminal 10 'extends from the sliding knob main body 9a' in the sliding direction of the printed board sliding hole 90 'penetrating the printed board, and extends in a predetermined direction perpendicular to the sliding direction. The first pattern terminals 10 are formed on the printed circuit board at intervals and are arranged in order from the top.
A ', the second pattern terminal 10B', the third pattern terminal 10C ', the fourth pattern terminal 10D', the fifth pattern terminal 10E ', and the sixth pattern terminal 10F' are the printed board sliding holes. It is formed parallel to 90 '. The pattern terminals 10A 'to 10F'
It is connected to the electrode terminals 6A to 6F via connection wirings.

In this embodiment, a locking recess 51 'is formed at a predetermined position of the printed board sliding hole 90' as the clip means, and the sliding knob main body 9a 'is formed.
A projection 52 ′ is formed on the side of the locking recess 51 ′, which is formed on the back surface of the projection, and the projection 52 ′ is formed to be freely protruded.
The sliding knob main body 9a 'is held at the position indicated by b'.

The switch section 12 ′ includes a movable contact 11 ′ communicating with an adjacent pattern terminal 10 ′ and a movable contact 1 ′.
And an arm 13 'for integrally moving the arm 1'. The arm 13 'is fixed to the slide knob main body 9a' and moves in conjunction with the indicator 9 '.
In each of the pattern terminals 10A 'to 10F', a notch (14AB ', 1) is formed so that one pattern terminal becomes non-conductive at a position corresponding to the mode.
4BC ', 14CD', 14DE ', 14EF').

Thus, the sliding switch unit 1
2 'can perform the same operation as that of the above-mentioned rotary switch unit 12, so that the same effect as the above-mentioned operation can be obtained. Wiring form on a printed circuit board, layout design, appearance design, etc. In consideration of the above factors, a sliding or rotating panel switch can be selected.

[0032]

As described above, according to the present invention, when the switch at the position corresponding to the mode is opened,
A potential is generated between the two electrodes, and the driving means is driven by the potential difference, and the open switch is short-circuited by a short-circuit member interlocked with the driving means to eliminate the potential and stop the driving means. By doing so, the driving means can be driven in accordance with each mode with a simple structure.

Also, the switch separates the electrodes,
Since a large current does not flow because it is used only for forming one electrode group, it can be formed integrally with the printed wiring on the printed circuit board, so that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating an outline of a mode switching control device according to the present invention.

FIG. 2A is a schematic diagram of an instruction unit according to the first embodiment, and FIG. 2B is a schematic diagram showing a mode switch unit thereof.

FIG. 3 is an explanatory diagram showing a situation when a VENT mode is set.

FIG. 4 is an explanatory diagram showing a situation when a FOOT mode is set.

FIG. 5A is a schematic diagram of an instruction unit according to a second embodiment, and FIG. 5B is a schematic diagram showing a mode switch unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Mode switching control device 2 Actuator device 4 Drive part (motor) 5 Short-circuit terminal 6 (6A-6F) Electrode terminal 7 Ground side terminal 8 Operation panel 9 Indicating part 10 (10A-10F) Pattern terminal 11 Movable contact 12 Switch part 13 Arms 14AB, 14BC, 14CD, 14DE, 14EF
Notch 20, 21 Power line 30 Motor drive IC 40 Mode switch 41-45 switch

Claims (4)

[Claims] A drive unit having a stop position corresponding to each of a plurality of modes, a short-circuit terminal that moves in conjunction with the operation of the drive unit, and a drive unit that stops at a position corresponding to each of the plurality of stop positions of the drive unit. An actuator device having a plurality of electrode terminals that are short-circuited by the short-circuit terminal, and a ground-side terminal that is always in contact with one end of the short-circuit terminal; and an instruction unit that is arranged on an operation panel and instructs display corresponding to the plurality of modes. A pattern terminal formed on a printed circuit board in the operation panel along a moving direction of the switch; and a pattern terminal interlocked with a pattern terminal corresponding to each mode in conjunction with an operation of the indicator. A panel switch section comprising a switch section having a plurality of movable contacts for short-circuiting, and each of the pattern terminals located at both ends of the plurality of pattern terminals Mode switching control, comprising: a power supply terminal connected to the power supply terminal; and driving means arranged between the power supply terminals and supplying power corresponding to a potential difference between the power supply terminals and a current direction to the drive unit. apparatus. 2. The panel switch according to claim 1, wherein the panel switch is a dial type in which the indication portion is a rotary knob and the pattern terminals are formed in a circular shape at predetermined intervals in a radial direction. Mode switching control device. 3. The mode switching control device according to claim 1, wherein the panel switch is a slide type in which the indication portion is a slide knob and the pattern terminals are formed along a syllabary direction. 4. The mode switching control device according to claim 1, wherein clip means is formed on the panel switch at positions corresponding to a plurality of modes.