JPH09164835A - Switching door drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switching door drive device which is capable of being formed easily and requires no increase in the number of parts used. SOLUTION: At the end part 4E of a switching door part 4A, a pin member 9 is provided so as to be slidable. The pin member 9 has a pin shape, one side of which is formed so as to clamp the end part 4E and multiple sides are inserted in a guide groove 10 formed integrally in the inner wall surface of a case. The pin member 9 is jointed with a plate 15, and when the rotation of the pin member 15 is driven, the pin member 9 is guided in the guide groove 10, so that it slides along the switching door part 4A and the rotation of a REC/FRESH switching door 4 is driven.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching door drive device for changing a ventilation state of air flowing in an air passage, and is particularly suitable for a vehicle air conditioner.

[0002]

2. Description of the Related Art FIG. 5 shows a switching door driving device for a vehicle air conditioner. This is applied to, for example, an inside / outside air switching device of a vehicle air conditioner, and a switching door 101 having a rotating shaft 100 selectively selects an inside air intake and an outside air intake formed in the inside / outside air switching device. It opens and closes. Further, the substrate of the switching door 101 is formed of a metal such as an iron plate, and a packing for improving airtightness is attached to the outer surface of the substrate by an adhesive material or the like.

The drive mechanism of the switching door 101, in order to transmit the driving force to the switching door 101 as shown in FIG.
It is configured by connecting the link plates 102 and 103. Specifically, the link plate 102 is fixed to the rotating shaft 100 with a screw 107. The link plate 102 has a link hole 1 serving as a guide.
06 is formed. A guide pin 104 formed at one end of the link plate 103 is inserted into the link hole 106 via a bush 105.

The link plate 103 is rotatably supported by, for example, a washer 109 screwing a screw member 108 to an air conditioning case (not shown). Further, conventionally, there is also one that reduces the number of parts by forming the substrate of the switching door 101 with resin and integrally forming the link plate 103 with this substrate.

[0005]

However, the substrate of the switching door 101 is made of a resin material, and the link plate 1 is formed.
Although it is possible to reduce the number of parts by integrally forming 03 on this substrate, there is a problem that the shape of the link hole 106 of the link plate 103 is complicated and molding is difficult.

On the other hand, when the substrate of the switching door 101 is formed of metal such as iron, the link plate 103 is a separate body from the switching door 101, and the link plate 103 is fixed to the switching door 101 by the screw 107. Therefore, there is a problem that the number of parts increases, which increases the number of assembly steps. In view of the above problems, it is an object of the present invention to provide a switching door drive device that is easy to mold and does not increase the number of parts.

[0007]

The present invention employs the technical means described below. The numbers in parentheses correspond to specific means of the embodiments described below. In the invention according to claim 1, a case (1) forming an air passage, a switching door (4) rotatably supported in the case and changing a ventilation state of air flowing in the case, and the switching door. And a link portion (300) for rotationally driving the switching door, the link portion being slidably provided along the end portion of the switching door, and the operation of rotationally driving the switching door in accordance with the sliding movement. A guide part (1) integrally formed with the member (9) on the case, guiding the sliding of the operating member and holding the operating member at the end of the switching door.
0) and a transmission member (15) for transmitting a driving force for driving the switching door to the actuating member.

Further, according to the second aspect of the invention, the case (1) for guiding the conditioned air toward the vehicle compartment and the inside air for introducing the vehicle interior air into the case are provided on the upstream side of the air. An inlet (3), an outside air inlet (2) provided on the air upstream side of the case for taking in air outside the vehicle compartment, and an inside air inlet rotatably supported by the case. A switching door (4) for selectively opening and closing the outside air introduction port and a link portion (300) for rotationally driving the switching door are provided, and the link portion extends along the end portion of the switching door. It is provided slidably,
An operating member (9) for rotationally driving the switching door according to this sliding is integrally formed with the case to guide the sliding of the operating member, and the operating member is provided at the end of the switching door. And a transmission member (15) for transmitting a driving force for driving the switching door to the operating member.

In the invention according to claim 3, the invention according to claim 1
Alternatively, in the invention of claim 2, the switching door is provided with a support shaft (4B) for rotatably supporting the switching door, and the front operating member is provided with the support shaft in the axial direction of the support shaft. It is characterized in that it is provided at the end (4E).

[0010] According to the fourth aspect of the present invention, in the first aspect,
In the invention according to any one of claims 3 to 3, the actuating member has a pin shape, and one end of the pin shape is formed so as to sandwich an end portion of the switching door. The invention according to claim 5 is characterized in that, in the invention according to claim 4, the guide portion is a groove portion (10) into which the other end of the operating member is inserted.

Further, in the invention according to claim 6, in the invention according to any one of claims 1 to 5, the case is at least two divided cases (1A, 1).
B) is coupled, and the transmission member is sandwiched between these split cases and is rotatably supported.

Further, according to the invention described in claim 7, according to claim 1,
The invention according to any one of claims 1 to 6, wherein at least the end portion of the switching door, which is a portion on which the actuating member slides, is flexible on the outer surface of the switching door for increasing airtightness. It is characterized in that a seal member (7) is provided.

[0013]

According to the configuration of the invention described above, in the inventions according to claims 1 to 7, when the operating member is driven by the transmitting member, the operating member is
It moves by being guided along a guide portion formed integrally with the case. At this time, the operating member slides along the end portion of the switching door and rotationally drives the switching door,
This brings the switching door into a predetermined operating state.

That is, since the operating member slides on the end of the switching door, it is not necessary to fix the operating member to the switching door or the case, and the number of parts can be reduced. Also, by making the operating member slidable along the end of the switching door and being guided by the guide portion integrally formed with the case, the link portion does not have a complicated shape as in the conventional case, Moldability can be improved.

Further, particularly in the invention according to claim 6, since the transmission member is rotatably supported by being sandwiched between the split cases, a component for rotatably supporting the transmission member becomes unnecessary, and the number of components is further increased. Can be reduced. Further, in particular, in the invention according to claim 7, since the end portion of the switching door, which is a portion where the operating member slides, is not provided with a flexible sealing member that enhances airtightness, the operating member and the switching door are not provided. It is possible to improve the slidability with the end portion of.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the present embodiment is applied to an inside / outside air switching device of a vehicle air conditioner as a switching door driving device. 2 and 3 are schematic diagrams of an inside / outside air switching device of a vehicle air conditioner. The inside / outside air switching device 200 constitutes the most upstream side part of a vehicle air conditioner mounted on a vehicle. Actually, on the air downstream side of the inside / outside air switching device 200, an evaporator which constitutes a refrigerant evaporator of a refrigeration cycle (not shown) mounted on the vehicle is sequentially installed from the air upstream side to the air downstream side. A cooler unit that stores and cools the passing air, a heater unit that heats the passing air by using engine cooling water as a heat source, and a communication duct for guiding conditioned air toward the passenger compartment are arranged.

The inside / outside air switching device 200 has a case 1 forming an air passage for guiding the conditioned air into the vehicle interior. The case 1 is made of a resin material such as polypropylene, and the pair of divided cases 1A and 1B are combined to form an air passage. The split case 1A is shown in FIG.
Further, as shown in FIG. 3, an outside air intake 2 for taking in air outside the vehicle compartment is formed in the case 1. On the other hand, in the divided case 1B, an inside air intake 3 for taking in vehicle interior air is formed in the case 1 adjacent to the outside air inlet 2.

In this case 1, the outside air intake 2 and the inside air intake 3 are located between the outside air intake 2 and the inside air intake 3.
An inside / outside air switching door 4 that selectively opens and closes is provided. The inside / outside air switching door 4 and the link portion 300, which is a drive mechanism of the inside / outside air switching door 4, will be described in detail later. In the case 1, a blower 5 for generating an air flow toward the vehicle interior is housed in the case 1 at a site on the air downstream side of the inside / outside air switching door 4. This blower 5
Has a fan 5A and an electric motor 5B that rotationally drives the fan 5A. In this embodiment, the fan 5A employs a centrifugal multi-blade fan (sirocco fan) that sucks the inside air or the outside air from above in FIG. 2 and blows it out in the right direction in FIG. ing.

Next, the inside / outside air switching door 4 and the link portion 3
00 will be described. FIG. 1 shows a schematic diagram in which the split case 1B is separated from the state of FIG. The inside / outside air switching door 4 includes a door portion 4A formed in a flat plate shape and the door portion 4A.
And a support shaft 4B provided at the end of A. The door portion 4A and the support shaft 4B may be integrally formed of, for example, a resin material or metal, or may be separately formed and then integrally fixed later. A packing 7 made of foamed resin or the like is attached to the outer surface of the door portion 4A with an adhesive material or the like as a fixing means. by this,
The inside / outside air switching door 4 has an outside air inlet 2 or an inside air inlet 3
When closing, the packing 7 is in contact with the opening edges of the respective inlets to ensure airtightness.

The end portions 4C and 4D of the support shaft 4B project from the door portion 4A as shown in FIG. The end portions 4C and 4D are divided into the divided case 1A as shown in FIG.
It is rotatably supported in bearing portions 6A and 6B formed in a substantially semicircular shape. Further, as shown in FIG. 2, the split case 1B has a bearing portion 7 similar to the bearing portions 6A and 6B.
A and 7B are formed. That is, in the assembled state as shown in FIG. 2, the support shaft 4B is divided into the split cases 1A and 1A.
It is rotatably supported so as to be sandwiched by bearing portions 6A to 7B formed on B.

Next, the link portion 30 of the inside / outside air switching door 4
0 will be described. The link portion 300 of this embodiment has a pin member 9 having a pin shape (see FIG. 4), a guide groove 10 for guiding the movement of the pin member 9, and the guide groove 1.
And a plate portion 15 that transmits a driving force for moving the pin member 9 along the direction 0. As shown in FIG. 4, the pin member 9 has a pin shape, and includes a columnar cylindrical portion 9A formed at one end thereof and a quadrangular prism portion 9B formed at the other end of the columnar shape. The tip of the square pole portion 9B is
A notch 11 cut out in a rectangular column shape is formed. As a result, the quadrangular prism portion 9B has its tip branched into two and has the sliding portions 12A and 12B.

The guide groove 10 is composed of a guide wall 10A formed so as to project on the inner wall surfaces of the divided cases 1A and 1B as shown in FIG. That is, as shown in FIG. 2, since the guide wall 10A is formed in a substantially V-shaped annular shape, the shape of the guide groove 10 is also a substantially V-shaped. The plate portion 15 is made of a resin material, a metal, or the like. The pin member 9 is moved along the guide groove 10 and a driving force for rotationally driving the inside / outside air switching door 4 is applied to the pin member 9. It is something to convey.

The plate portion 15 has a shape similar to that of the end portions 4C and 4D of the support shaft 4B described above.
It has a cylindrical support shaft 14 rotatably supported so as to be sandwiched between bearing portions 13A and 13B formed in A and 1B. Furthermore, at both axial ends of the support shaft 14,
The arm portions 15A, 1 are arranged so as to extend radially outward of the support shaft 14.
5B are formed. The arms 15A and 15B have a flat plate shape. As shown in FIG. 1, the arm portion 15A is formed with an insertion hole 15C into which the pin member 9 is inserted. On the other hand, the arm portion 15B is integrally formed with a pin portion 15D protruding in the axial direction of the support shaft 14 as shown in FIG.

The pin portion 15D has, for example,
A control cable 301 (see FIGS. 2 and 3) installed in the vehicle compartment and connected to a control lever (not shown) for operating the inside / outside air switching door is fixed. Then, the pin member 9, the inside / outside air switching door 4 and the plate portion 8 described above are attached in the following procedure.

First, the end portions 4C and 4D of the support shaft 4B are placed (or fitted) in the bearing portions 6A and 6B of the split case 1A. Next, in a state in which the pin member 9 is inserted into the insertion hole 15C of the plate portion 15, the support shaft 4B is inserted into the notch portion 11 (between the sliding portion 12A and the sliding portion 12B) of the pin member 9. The end portion 4E of the switching door portion 4A in the axial direction is sandwiched. Then, the cylindrical portion 9A of the pin member 9 is inserted into the guide groove 1
0 (between the guide wall 10A). Since the packing 7 described above is not attached to the end 4E, the pin member 9 can be easily attached to the end 4E of the switching door 4A.
Can be attached to. Further, the interval between the sliding portion 12A and the sliding portion 12B (width of the cutout portion 11, width indicated by X in FIG. 4) is slightly larger than the thickness of the end portion 4E. That is, the end portion 4E of the switching door 4A is connected to the sliding portion 12A.
The pin member 9 is sandwiched between the pin member 9 and the sliding portion 12B.
Slide along E. Therefore, if this interval X is increased, the pin member 9 and the inside / outside air switching door 4 rattle during sliding, resulting in defective operation. It is set.

Simultaneously with or after this, the support shaft 14 of the plate 9 is placed (fitted) in the bearing portion 13A of the split case 1A. Then, from this state, division case 1
B is covered from above the paper surface in FIG. 1, and, for example, the divided case 1A and the divided case 1B are joined together by a screw or a hook which is a joining member. As a result, the columnar portion 9A of the pin member 9 is inserted into the guide groove 10 so as to be surrounded by the guide wall 10A. That is, the guide groove 10 guides the rotation of the inside / outside air switching door 4 and also the pin member 9
However, it also plays a role of holding the switching door portion 4A so as not to fall off from the end portion 4E of the switching door portion 4A. The assembly procedure described above may be changed as long as possible.

Next, the inside / outside air switching door 4 and the link portion 3
The operation of 00 will be described with reference to FIGS. 2 and 3. In addition,
2 shows the inside / outside air switching door 4 and the link portion 300 in the outside air introduction mode, and FIG. 3 shows the inside / outside air switching door 4 and the link portion 300 in the inside air circulation mode. When the control cable 301 is operated by an occupant and moves so as to extend in the upper right direction in FIG. 2, the plate 15 is rotationally driven clockwise in FIG. Along with this, the pin member 9 connected to the plate 15 moves while being guided along the guide groove 10.

At this time, when the pin member 9 moves along the guide groove 10 from the state of the outside air introduction mode shown in FIG. 2 to the position indicated by F in FIG. The inside / outside air switching door 4 is moved along the end 4E of the switching door portion 4A of the switching door 4 toward the support shaft 4B.
Rotate in a clockwise direction. Further, when the link portion 15 is driven to rotate clockwise in FIG. 2 and the pin member 9 is guided along the guide groove 10, the pin member 9 is indicated by G in FIG. 2 from the position indicated by F in FIG. Move to position. Along with this, the inside / outside air switching door 4 becomes the state shown in FIG.
The inside air circulation mode is set. At this time, the pin member 9 slides along the end portion 4E of the switching door portion 4A and moves to the tip end portion of the switching door portion 4A (the side opposite to the support shaft 4B).

Here, the above-mentioned guide groove 10 has a substantially V shape, but there is a reason as described below. In other words, when the inside / outside air switching door 4 is rotationally driven from the state of the outside air introduction mode shown in FIG. 2 to the inside air circulation mode shown in FIG. 3, the pin member 9 moves from H to F in FIG. The inside / outside air switching door 4 rotates in proportion to the rotation amount of the plate portion 15. At this time, the inside / outside air switching door 4 rotates at a substantially constant speed if the rotation speed of the plate portion 15 is constant.

In the pin member 9 from F to G in FIG. 2, the rotation amount of the inside / outside air switching door 4 is smaller than the rotation amount of the plate portion 15 as compared with the above H to F. The rotation speed of the plate portion 15 decreases. That is,
When the inside / outside air switching door 4 rotates so as to close the outside air inlet 2, the rotation speed decreases immediately before the outside air inlet 2 is closed, and the inside / outside air switching door 4 collides with the opening edge of the outside air inlet 2. It softens the sound.

In the present embodiment, the inside / outside air switching door 4 is in contact with the opening edge of the outside air intake 2 between F and G in FIG. It is in. However, the occupant operating the control cable 301 moves the pin member 9 to the position G in FIG. 2 via the plate portion 15 in order to select the outside air introduction mode. As a result, the inside / outside air switching door 4 is rotated and the inside / outside air switching door 4 is rotated.
The packing 7 adhered to is compressed and the outside air intake port 2 can be reliably closed. In addition, such F-G in FIG.
By providing the portion shown in (1), when the inside / outside air switching door 4 closes the outside air intake 2, a resistance force against rotation of the inside / outside air switching door 4 against the ram pressure due to vehicle traveling can be obtained. .

Further, in this embodiment, since the packing 7 described above is not adhered to the end portion 4E of the switching door portion 4, it is easy to smoothly slide the switching door portion 4A and the pin member 9. It is like this. As a result, malfunction of the inside / outside air switching door 4 can be reduced. As described above, the pin member 9 is guided along the guide groove 10 formed integrally with the case 1 and slides with respect to the inside / outside air switching door 4. A fixing member (screw member) for fixing the link plate to the switching door 4 is unnecessary and the number of parts can be reduced. Further, the guide groove 10 and the pin member 9 having a simple structure can obtain a desired air-conditioning state, so that the moldability of the link portion does not deteriorate unlike the conventional case. Further, since the link portion 15 is rotatably supported so as to be sandwiched between the split cases 1A and 1B, the number of parts can be further reduced.

Although the embodiments of the present invention have been described above, the present invention is also applicable to the modified examples described below. Although the inside / outside air switching door 4 is rotationally driven by the control cable 301 in the above embodiment, it may be driven by an electric motor or the like. In the above embodiment,
Although it is applied to the switching door of the inside / outside air switching device, it may be applied to the air mix door used for the vehicle air conditioner,
You may apply to the switching door which switches an outlet.

Further, in the above embodiment, the one applied to the vehicle air conditioner has been described, but it is needless to say that the present invention can be applied to a switching door for switching the flow of the air flow without departing from the scope of the invention.

[Brief description of the drawings]

FIG. 1 is a schematic detailed view of an inside / outside air switching door and a link mechanism according to an embodiment of the present invention.

FIG. 2 is an overall configuration diagram of an inside / outside air switching device in the above embodiment.

FIG. 3 is an overall configuration diagram of an inside / outside air switching device in the above embodiment.

FIG. 4 is a detailed view of the pin member in the above embodiment.

FIG. 5 is a diagram showing a drive mechanism of a conventional switching door.

[Explanation of symbols]

 1 case 4 inside / outside air switching door (switching door) 9 pin member (operating member) 10 guide groove (guide portion) 15 plate (transmitting member)

Claims (7)

[Claims] 1. A case forming an air passage, a switching door rotatably supported in the case and changing a ventilation state of air flowing in the case, and a link portion for rotationally driving the switching door. The link portion is slidably provided along an end portion of the switching door, and an operating member that rotationally drives the switching door along with the sliding is integrally formed with the case, A guide portion that guides the sliding of the operating member and holds the operating member at the end portion of the switching door, and a transmission member that transmits a driving force for driving the switching door to the operating member. A switching door drive device characterized by the above. 2. A case for guiding conditioned air toward a passenger compartment, an inside air inlet provided in an upstream air side of the case for taking in the passenger compartment air, and an upstream air side of the case. An outside air introduction port provided for taking in air outside the vehicle compartment of the case, a switching door rotatably supported by the case, and selectively opening and closing the inside air introduction port and the outside air introduction port; A link portion for rotationally driving the door, the link portion being slidably provided along an end portion of the switching door, and an operating member for rotationally driving the switching door in accordance with the sliding movement. A guide part formed integrally with the case for guiding sliding of the operating member and holding the operating member at an end of the switching door; and a driving part for driving the switching door. Driving force Switching door driving apparatus characterized by having a reach transmission member. 3. The switching door is provided with a support shaft for rotatably supporting the switching door, and the front operating member is provided at the end portion in the axial direction of the support shaft. The switching door drive device according to claim 1 or 2, characterized in that. 4. The operating member has a pin shape, and one end of the pin shape is formed so as to sandwich an end portion of the switching door. The switching door drive device described. 5. The switching door driving device for a vehicle air conditioner according to claim 4, wherein the guide portion is a groove portion into which the other end of the operating member is inserted. 6. The case is configured by connecting at least two divided cases, and the transmission member is rotatably supported by being sandwiched between the divided cases. 6. The switching door drive device according to any one of 6. 7. A flexible sealing member for enhancing airtightness is provided on an outer surface of the switching door except at least an end portion of the switching door where the operating member slides. Claim 1 thru | or 6 characterized by the above-mentioned.
A switching door drive device according to any one of the above.