JPS6284255A - Blow-off direction adjusting device for air conditioner - Google Patents

Abstract

PURPOSE:To positively specify the blow-off direction of an air flow in a desired direction by forming an insulating portion in an angular position corresponding to a predetermined swinging position of a swinging member at an annular fixed contact. CONSTITUTION:A program switching mechanism 40 is composed of circular, annular fixed contacts 42-44, and a movable contact 45 axially supported on a printed base plate 41 so that the movable contact is made rotatable around the center 42a of the fixed contact 42 while slidably contacting respective fixed contacts 42-44 in linkage with a rotary lever 23. The fixed contact 42 is connected to a fixed contact 33 of a changeover switch 30 and to a positive side terminal +B of a DC power source. The fixed contact 43 has a cutaway 43a. This cutaway 43a corresponds to a rotary position of a movable contact 45 corresponding to a first predetermined swinging position shown by each solid line of eac louver 12. Further, the fixed contact 44 has a cutaway 44a which corresponds to a rotary position of a movable contact 45 corresponding to a second predetermined swinging position shown by each broken line of each louver 12.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air conditioner, and particularly to a method for adjusting the direction of air flow blown out from the air conditioner. Regarding equipment.

[Prior art]

Conventionally, in this type of blowing direction adjusting device, for example,
As disclosed in Japanese Utility Model Application Publication No. 58-123239, a louver provided at the outlet of a vehicle air conditioner is swung under the operation of an operation switch to control the direction of air flow from the outlet. There is one in which the louver is stopped when the operation switch is released by swinging the louver.

[Problem that the invention seeks to solve]

However, in such a configuration, even if the occupant operates the operation switch to fix the airflow direction in a specific direction, the louver does not stay in the position where the airflow direction is fixed in a specific direction. There is a problem that it is difficult. In addition, when the louver stops, in order to confirm its stopping position, it is necessary to visually check the louver or to sense the direction of the air flow, which is undesirable for smooth vehicle operation. .

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a blowing direction adjusting device that can reliably specify the blowing direction of airflow from an air conditioner in a desired direction by a simple operation. It is something to do.

[Means for solving problems]

In solving this problem, the structural features of the present invention are as follows:
A blowout direction adjustment mechanism is provided at the blowout port of the air conditioner and adjusts the blowing direction of the airflow from the blowout port by swinging a swinging member, and a rotary electric motor rotates in one direction when supplied with power from a power source. A blowout direction adjusting device including a rotating means for swinging the swinging member and an operating means for selectively allowing power to be supplied from the power source to the rotating electric motor, wherein a pair of annular shapes disposed comradely with each other It has a fixed contact, and a movable contact that is in sliding contact with the re-annular fixed contacts and rotates in conjunction with the rotary motor around the concentric position of the re-annular fixed contacts, a first switch connected to the power source; and a switch means forming an insulating portion at an angular position corresponding to a predetermined swing position of the movable member and connecting the other of the re-annular fixed contacts to the power source; A switching device comprising a fixed contact, a second fixed contact connected to one of the recircular fixed contacts, and a switching contact connected to the rotary electric motor and selectively switched to the first and second fixed contacts. The operating means is configured by a switch.

[Effect]

By configuring the present invention as described above, when the changeover contact of the changeover switch is connected to the first fixed contact, the rotary motor is connected to the power supply through the changeover contact of the changeover switch and the first fixed contact. is connected to the air conditioner and rotates in one direction upon receiving power supply, and the rotating means swings the swinging member of the blowout direction adjustment mechanism under the one-way rotation of the rotary electric motor to which the rotating means is connected, and the blowout direction adjustment mechanism is rotated in one direction so that the blowout direction adjustment mechanism is rotated in one direction. The blowing direction of the airflow is changed by swinging.

In such a state, if the changeover contact of the changeover switch is switched to the second fixed contact, the rotary motor will switch between the changeover contact of the changeover switch, the second fixed contact, and the recircular fixed contact of the switch means. On the other hand, it is connected to the power source through the other of the movable contact and the recircular fixed contact. For this reason,
When the movable contact of the switching means reaches the insulation part of one of the annular fixed contacts during its rotation and is cut off from one of the two annular fixed contacts, the rotating means is cut off from the power source of the rotary motor. In response to this, the swinging member is stopped at the predetermined swinging position. In this way, by switching the changeover switch to the second fixed contact, the swinging member can be stopped at the predetermined swinging position and the blowing direction of the airflow by the blowing direction adjustment mechanism can be specified. The person is
It is possible to continue to smoothly drive the vehicle while reliably adjusting the blowing direction of the airflow in a desired direction without any extra operations other than simply switching a changeover switch.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
The figure shows an example in which the blowing direction adjusting device according to the present invention is applied to a vehicle air conditioner. The blowing direction adjusting device is operatively connected to a blowing direction adjusting mechanism 10 provided at an air outlet into the cabin of the air conditioner of the vehicle (located in front of the driver's seat), and to the blowing direction adjusting mechanism 10. The blowing direction adjusting mechanism 10 is configured to adjust the pivot shafts 11 of the plurality of louvers 12 to 12 according to the reciprocating displacement of the connecting rod 13 in the left-right direction shown in FIG.
-11 as a reference to change the blowing direction of the air flow blown into the vehicle interior from the air outlet of the air conditioner.

The servo mechanism 20 includes a DC motor and a speed reducer built into a casing 21, a rotary lever 23 fixed at right angles to an output shaft 22 extending from the speed reducer through the peripheral wall of the casing 21, and a tip end of the rotary lever 23. and connecting rod 13
It is constituted by a link rod 24 connected between the proximal end portion of.

Therefore, in the servo mechanism 20, when the DC motor rotates in one direction, the reduction gear rotates in the same direction, the rotation lever 23 similarly rotates around the output shaft 22 of the reduction gear, and the link rod 24 rotates in the same direction. In FIG. 1, the connecting rod 13 is reciprocated by being oscillated in the vertical direction as shown in the figure and reciprocated in the left-right direction. Further, the DC motor of the servo mechanism 20 is grounded at one input terminal, and connected to the switching contact 31 of the changeover switch 30 at the other input terminal.

The changeover switch 30 includes the changeover contact 31 and three fixed contacts 32, 3 that selectively switch on and close the changeover contact 31.
3.34.

The program switch mechanism 40 includes an annular fixed contact 42 formed on an insulating substrate 41 fixed in a proper position, and a printed circuit board with a fixed contact 42 sequentially provided with a predetermined interval on the outside of the fixed contact 42. Each substantially annular fixed contact 43, 44 formed on 41 and each of these fixed contacts 42 to 4
The printed circuit board 4 is rotated in conjunction with the rotary lever 23 about the center 42a of the fixed contact 42 while slidingly contacting the printed circuit board 4.
The fixed contact 42 is connected to the fixed contact 33 of the changeover switch 30 and the positive terminal B of the DC power source.

The fixed contact 43 forms a notch 43a, and this notch 4
3a is wider than the width of the movable contact 45 and each louver 12
This corresponds to the rotational position of the movable contact 45 corresponding to the first predetermined swinging position shown by the solid line in FIG. Also,
The fixed contact 44 has a notch 44a, and this notch 4
4a is wider than the width of the movable contact 45 and corresponds to the rotational position of the movable contact 45 corresponding to the second predetermined swinging position of the louver 12 shown by the broken line in FIG.

In this embodiment configured in this way, the changeover switch 3
When the movable contact 31 of 0 is connected to the fixed contact 33, the DC motor of the servo mechanism 20 is supplied with power from the DC power source through the fixed contact 33 and the movable contact 31 of the changeover switch 30, and rotates in one direction, causing the reduction gear to rotate in the same direction. Rotate in the direction. Then, the rotating lever'? 3 rotates in accordance with the rotation of the speed reducer, the movable contact 45 of the program switch 40 rotates while slidingly contacting each of the fixed contacts 42, 43, 44, and the link rod 24 swings downward t and horizontally. The connecting rod 13 of the blow-out direction adjusting mechanism 1O reciprocates in the left-right direction, and each louver 12-12 swings about each pivot shaft 11-11. Thereby, the blowing direction of the airflow blowing out from the air conditioner changes according to the rocking of each louver 12-12.

When the movable contact 31 of the changeover switch 30 is switched to the fixed contact 34 in such a state, the DC motor switches between the movable contact 31 of the changeover switch 30, the fixed contact 34, the fixed contact 43 of the program switch mechanism 40, and the movable contact 45. and is connected to the DC power source via a fixed contact 42. Therefore, when the movable contact 45 of the program switch mechanism 40 reaches the notch 43a during rotation and is cut off from the fixed contact 43, the DC motor is cut off from the DC power supply and stopped. The reducer stops and each swing lever 12
stops at the position indicated by the solid line in FIG.
In other words, the driver operates the movable contact 31 of the changeover switch 30.
By simply applying the power to the fixed contact 34, each swing lever 1
2 can be stopped at the first predetermined swing position, and the blowing direction of the airflow can be reliably changed in the direction corresponding to this stop position.

Further, when the movable contact 31 of the changeover switch 30 is switched to the fixed contact 32 in the above-mentioned state, the DC motor switches between the movable contact 31 and the fixed contact 32 of the changeover switch 30.
, is connected to the DC power source through a fixed contact 44, a movable contact 45, and a fixed contact 42 of the Terodulum switch mechanism 40. Therefore, when the movable contact 45 of the program switch mechanism 40 reaches the notch 44a under rotation and is cut off from the fixed contact 44, the DC motor is cut off from the DC power supply and stops, and the reduction gear stops, and each louver 12 stops at the position indicated by the broken line in FIG. In other words, the driver operates the movable contact 3 of the changeover switch 30.
By only applying power to the fixed contact 32 of 1, each louver 12
can be stopped at the second predetermined swing position, and the blowing direction of the airflow can be reliably changed in the direction corresponding to this stop position.

Next, a modification of the above embodiment will be explained with reference to FIG. 2. In this modification, a relay 50 is installed between the DC motor of the servo mechanism 20 and the changeover switch 30 described in the above embodiment. Its structural characteristics lie in its connection. The relay 50 includes an electromagnetic coil 51, a grounding fixed contact 52,
It is equipped with a fixed contact 53 and a double-throw contact 54 that is connected to the fixed contact 53 (or grounded fixed contact 52) by excitation (or demagnetization) of the electromagnetic coil 51, and the electromagnetic coil 51 is grounded at one end and grounded at the other end. It is connected to the movable contact 31 of the changeover switch 30 at. Further, the fixed contact 53 is connected to the positive terminal of the DC power supply, while the double-throw contact 54 is connected to the other input terminal of the DC motor.

In this modified example configured in this way, the changeover switch 3
When the movable contact 3'1 of 0 is connected to the fixed contact 33, the electromagnetic coil 51 of the relay 50 receives power from the DC power supply through the fixed contact 33 and the movable contact 31 of the changeover switch 30, and is energized. is applied to the fixed contact 53.

Then, the DC motor is connected to the relay 50 from the DC power source.
The louvers 12 are rotated by being supplied with electricity through the fixed contact 53 and the double-throw contact 54, and each louver 12 swings in the same manner as in the previous embodiment to change the blowing direction of the air flow.

When the movable contact 31 of the changeover switch 30 is switched to the fixed contact 34 in such a state, the electromagnetic coil 51 of the relay 50 switches between the movable contact 31 and the fixed contact 3 of the changeover switch 30.
4. Connected to the DC power supply through the fixed contact 43, movable contact 45, and fixed contact 42 of the program switch mechanism 40. Therefore, the movable contact 45 of the program switch mechanism 40 reaches the notch 43a under its rotation, and the fixed contact 43
When the electromagnetic coil 51 is cut off from the DC power source, the electromagnetic coil 51 is demagnetized and the double throw contact 54 is grounded to the fixed contact 5.
2, the DC motor is short-circuited by the double-throw contact 54 and the ground fixed contact 52, and suddenly stops under dynamic braking operation. Thereby, each louver 12 can be more reliably stopped at the first predetermined swing position based on the dynamic braking operation of the DC motor.

Further, when the movable contact 31 of the changeover switch 30 is switched to the fixed contact 32 in the above-mentioned state, the electromagnetic coil 5
1 is a movable contact 31, a fixed contact 32 of a changeover switch 30,
The program switch mechanism 40 is connected to the DC power source through a fixed contact 44, a movable contact 45, and a fixed contact 42. Therefore, the movable contact 4 of the program switch mechanism 40
5 reaches the notch 44a during its rotation and is cut off from the fixed contact 44, the electromagnetic coil 51 is cut off from the DC power source and demagnetized, causing the double throw contact 54 to connect to the grounding fixed contact 52, and the DC motor As mentioned above, the engine stops suddenly due to the dynamic braking action. Thereby, each louver 12 can be more reliably stopped at the second predetermined swing position based on the dynamic braking operation of the DC motor.

Note that in carrying out the present invention, the number of fixed contacts of the changeover switch 30 and the number of fixed contacts with cutouts of the program switch mechanism 40 may be changed as necessary (in such a case, the above-mentioned An insulating piece may be provided in the notch of the fixed contact.

Further, in the embodiments described above, an example in which the present invention is applied to a vehicle air conditioner has been described, but the present invention is not limited to this, and the present invention may be applied to various air conditioners.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention applied to a vehicle air conditioner, and FIG. 2 is a schematic diagram showing a modification of the embodiment. Explanation of symbols 10... Blowing direction adjustment mechanism, 12... Louver, 20
...Servo mechanism, 23...Rotary lever, 30...
Changeover switch, 40...program switch mechanism, 4
2.43.44...Fixed contacts, 43a, 44a...
Notch.

Claims (1)

[Claims] A blowout direction adjustment mechanism is provided at the blowout port of the air conditioner and adjusts the blowing direction of the airflow from the blowout port by swinging a swinging member, and a rotary electric motor rotates in one direction when supplied with power from a power source. A blowout direction adjusting device including a rotating means for swinging the swinging member and an operating means for selectively allowing power to be supplied from the power source to the rotary electric motor, wherein a pair of It has an annular fixed contact, and a movable contact that is in sliding contact with both of the annular fixed contacts and rotates in conjunction with the rotary motor around a concentric position of the annular fixed contact, and one of the annular fixed contacts has the A switch means is provided which forms an insulating part at an angular position corresponding to a predetermined swing position of the swing member, and connects the other of the annular fixed contacts to the power source, and a switch means connected to the power source. a second fixed contact connected to one of the annular fixed contacts, and a switching contact connected to the rotating electric motor and selectively switched to the first and second fixed contacts. A blowout direction adjusting device for an air conditioner, characterized in that the operating means is constituted by a changeover switch.