JPS6010885Y2 - Automotive air conditioner controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a controller for an automobile air conditioner that is attached to the front of the driver's seat to control the operation of the automobile air conditioner.

Modern cars are equipped with air conditioners (auto air conditioners) that fully automate the heating and cooling inside the car.This auto air conditioner uses sensors to detect the temperature inside and outside the car, and based on this, air is supplied via the negative pressure and electrical system. It opens and closes various doors installed inside the duct.

The negative pressure electrical system receives the inside and outside air temperature of the car sensed by the inside air sensor and the outside air sensor as an input signal, and an auto amplifier that outputs a control signal based on this, and an output signal from this auto amplifier that operates to generate a negative pressure. A transducer that selectively communicates between a pressure source and the atmosphere.
It is operated by this transducer and has a power servo etc. for opening and closing the air mix door.

The auto amplifier is provided in a controller provided in front of the driver's seat, and this controller is provided with a control panel, and this control panel is provided with various mode switching means or temperature adjustment means.

In addition, the auto amplifier has a temperature control lever that allows the resistance value to be changed by a temperature control lever operated by the operator. A trimmer is connected to the control potentiometer and a trimmer to finely adjust the resistance inside it after assembly of the autoamplifier.

This trimmer is installed to adjust the initially set resistance value after the auto amplifier is assembled, as errors in the initially set resistance value occur due to the accumulation of tolerances from each component of the system. Conventionally, the trimmer was installed inside the controller. After the trimmer is stored, the controller is assembled, and it is attached to the front of the driver's seat, it becomes impossible to operate the trimmer from the outside.
There is an inconvenience in that when adjustment is necessary, the control panel must be removed.

In view of this, the present invention provides a trimmer that is installed on the back side of the control panel and in a position opposite to the opening on the front side of the control panel, and that a tool such as a screwdriver is inserted through the opening to adjust the trimmer. An object of the present invention is to provide a controller for an air conditioner for an automobile whose resistance value can be easily adjusted from the outside even after the controller is assembled and installed.

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

FIG. 1 shows the relationship between the auto air conditioner body 1 and the negative pressure/electrical system. The auto air conditioner body 1 selectively takes in inside air and outside air using a fan 3 by opening and closing an intake door 2 intake unit 4 and the air taken in from this intake unit 4 to the evaporator 5.
A cooler unit 6 that is cooled by
It has a heater unit 9 that changes the mix state of cold air cooled by the heater core 7 and warm air heated by the heater core 7 using an air mix door 8 provided in the front of the heater core 7, and a blower outlet downstream of the heater unit 9. 10
．． 11 and a door 12.13 for opening and closing these air outlets, and the air outlet 10.11 opens into the vehicle interior 14.

The opening/closing of the air mix door 8 is controlled by the link 1 by a power servo 15, which is part of the negative pressure-electrical system and operates under negative pressure.
6, and the power servo 15 is connected to a transducer 18 for selectively directing the negative pressure from the negative pressure source 17.
The transducer 18 is controlled by a control signal from the autoamplifier 19, and the transducer 18 is connected to the autoamplifier 19.
The inside and outside temperatures sensed by the inside air sensor 20 and the outside air sensor 21 are added to 9 as an input signal.

The auto amplifier 19 is provided with a temp control potentiometer 22, and the resistance value of the temp control potentiometer 22 changes as a temp lever (temperature adjustment lever) 24 moves left and right as shown in FIG. As a result, the temperature is set in the autoamplifier, and the rotational speed of the fan 3 and the position of the air mix door 8 are controlled.

The template lever 24 is provided in a controller 25, and the controller 25 includes various mode levers 26, 26.
...26 are arranged in parallel, and each of these L' bars 249
The front end of the controller 26 projects forward through a front support frame 27 of the controller, and a control panel 28 is superimposed on the front support frame 27.

An opening 29 is provided in a part of the control panel 28, and the tip of the mode lever 26 projects forward from the opening 29, and push buttons 30, 30, on which various modes are displayed on the projecting tip. 30 is fixed.

A slit 31 is provided at the bottom of the control panel 28, the tip of the template lever 24 projects forward from the slit 31, a knob 32 is fixed to the protruding tip, and a temperature display 32a is displayed along the slit 31. .

A slit 33a for guiding the template lever 24 is formed in the lower center of the front support frame 27 of the controller, and a temperature setting device 33 having a template control potentiometer 22 is attached to the right end of the temperature setting device 33. A protective box 34 is installed nearby, and as shown in FIG.
5 and its adjustment screw 36 are housed therein.

An opening 34a is formed in the front surface of the protective box 34, and this opening 34a faces the right end of the slit 31 of the control panel 28, so that a driver 37 can be inserted from outside the control panel 28 through the slit 31 and the opening 34a. There is.

When the adjustment screw 36 is rotated, the contact 35a of the trimmer 35 is turned into a resistor 35b arranged in a circular manner as shown in FIG.
to change the resistance inside the autoamplifier 19.

Therefore, even after the controller 25 is assembled, the resistance value inside the auto amplifier 19 can be changed from the outside, and since the adjustment screw 36 is housed inside the protective box 34, the adjustment screw 36 can be changed during the controller assembly. There is no chance of being touched and rotated.

Note that the protection box 34 may be provided at another appropriate position, and the control panel 28 may be provided with a corresponding opening.

Further, in the above embodiment, the temperature setting device 33 and the protection box 34 are separate, but the temperature setting device may be made a little longer and a trimmer adjustment screw may be provided inside the temperature setting device without providing a special protection box (see Fig. 5). ).

It is clear that the durability will be improved if a dustproof cover is provided on the sulin 33a.

As explained above, the present invention provides a trimmer adjustment member (adjustment screw 36) on the back side of the control panel and at a position opposite to the opening (slit 31) of the control panel, and inserts a tool such as a screwdriver into the opening. Since the trimmer adjustment member is moved by inserting the controller, the trimmer can be easily adjusted from the outside at any time even after the controller is assembled and installed without disassembling it.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of an automotive air conditioner according to the present invention, Fig. 2 is an exploded perspective view of the controller, Fig. 3 is a vertical sectional view of the protective box, and Fig. 4 is a trimmer and balance diagram. FIG. 5 is a diagram illustrating a state of connection with a control potentiometer, and FIG. 5 is a front view of main parts showing another embodiment. 1... Auto air conditioner body, 7... Heater core, 15... Power servo, 19...
...Auto amplifier, 22... Temp control potentiometer, 24... Temp lever, 25
... Controller, 28 ... Control panel, 33 ... Temperature setting machine, 34 ...
...Protection box, 35...Trimmer 36...
...adjustment screw.

Claims (1)

[Scope of claim for utility model registration] 1. An automatic device that detects the temperature inside and outside the car, compares this detection signal with a preset value, and outputs an opening adjustment signal to adjust the opening degree of each door. In a controller for an automobile air conditioner, which has an amplifier, a trimmer for adjusting the resistance value in the auto amplifier, and a control panel for performing mode switching operations, temperature adjustment operations, etc., the trimmer is connected to the control panel. A control loft for an automobile air conditioner that is installed in a position opposite to the front opening of the vehicle. 2. The controller for an air conditioner for an automobile according to claim 1, wherein the trimmer has a resistance value changed by rotating an adjustment screw.