JP7049554B2 - Door drive - Google Patents

Description

The present invention relates to a door driving device for transmitting a driving force from a driving source to a plurality of doors in a vehicle air conditioner to open and close the door.

Conventionally, a plurality of doors provided in an air-conditioning case of a vehicle air-conditioning device are moved by transmitting a driving force from a drive source, and the air flow state in a plurality of flow paths by driving the doors. Is being switched.

In such a vehicle air conditioner, for example, as disclosed in Patent Document 1, a first and second air mix doors that can be slidably displaced in the vertical direction are provided inside the air conditioner case, and the first and second air mix doors are arranged above. The first external gear of the first shaft is meshed with the 1 air mix door, and the second internal gear of the second shaft is meshed with the second air mix door arranged below the first shaft. The first internal gear and the second external gear of the second shaft are meshed with each other at the end of a rod-shaped rack provided so as to be inclined at an angle.

Then, by rotating the first shaft, the first air mix door slides upward, and the rack also moves diagonally upward, so that the second shaft meshed with the rack becomes the first shaft. The second air mix door slides downward by rotating in the opposite direction.

Further, the door drive device of the air conditioner disclosed in Patent Document 2 has a plate that rotates when the user operates an operation lever, and a spur gear provided at the end of the plate is the end of the shaft. The worm gear provided in the center of the shaft is meshed with the worm wheel connected to the door shaft.

Then, the shaft rotates in a predetermined direction by rotating the plate by operating the operation lever, and the driving force is transmitted from this shaft to the worm wheel and rotates to open and close the air mix door via the door shaft. Operate.

JP-A-2015-110404 Japanese Patent No. 4092303

However, in the vehicle air conditioner according to Patent Document 1 described above, it is necessary to provide a space on the wall surface of the air conditioner case for the rack to move diagonally in the vertical direction. If the size of the rack and the first and second air-mix doors, the first and second shafts, and the rack become larger and manufacturing errors or assembly variations occur, the rack and the first and second shafts are placed in predetermined positions. It cannot be assembled due to the relationship, and there is a concern that, for example, the resistance between the first and second shafts and the rack increases and the operability decreases or the assembly cannot be performed.

In addition, since the rack is configured to slide along the wall surface of the air conditioning case, it is necessary to apply grease in order to reduce the sliding resistance between the wall surface and the rack, which leads to an increase in manufacturing cost and at the same time assembling. There is a problem that the adhesiveness is lowered.

On the other hand, even in the door drive device according to Patent Document 2 described above, when the distance between the air mix door and the plate varies due to a product error or the like, between the spur gear of the plate, the cap gear of the shaft, the worm gear, and the like. There is a problem that the resistance increases and it becomes difficult to operate smoothly, and when the variation is excessive, the assembly cannot be performed.

The present invention has been made in consideration of the above-mentioned problems, and it is an object of the present invention to provide a door driving device capable of improving the miniaturization and assembling property while increasing the transmission efficiency of the driving force to the door. The purpose.

In order to achieve the above object, the present invention has a drive unit, an air-conditioning case having a flow path for air blown into the vehicle interior, and a plurality of air-conditioning cases for adjusting the opening degree of the flow path inside the air-conditioning case. The door, the first rotating body that drives the first door among the plurality of doors, the second rotating body that drives the second door in conjunction with the first rotating body, and the driving force of the driving unit are second. In the door drive device that transmits to the 1st and 2nd rotating bodies
The first rotating body and the second rotating body are connected so as to be able to transmit the driving force from the driving unit, and a transmission shaft orthogonal to the rotation axes of the first rotating body and the second rotating body is provided.
The transmission shaft has a first connecting portion connected to the first rotating body and a second connecting portion connected to the second rotating body.
The first connection portion is a conversion transmission mechanism that converts the rotation direction of the first rotating body and transmits the driving force of the drive unit to the transmission shaft, and also in the rotation axis direction between the first connection portion and the second connection portion. It is characterized by being provided with an adjustment mechanism that can adjust the length along the line.

According to the present invention, a first rotating body that drives the first door in the air conditioning case, a second rotating body that drives the second door, and a first rotating body and a second rotating body are driven from a driving unit. It has a transmission shaft that can transmit the driving force of the above, and the transmission shaft is provided so as to be orthogonal to the rotation axes of the first rotating body and the second rotating body, and is connected to the first rotating body. It includes a connecting portion and a second connecting portion connected to the second rotating body.

Then, the rotation direction of the first rotating body is converted by the first connecting portion, the driving force of the driving portion is transmitted to the transmission shaft, and the length of the first connecting portion and the second connecting portion along the rotation axis direction. The speed can be adjusted by the adjustment mechanism.

Therefore, it relates to the prior art in which the first and second shafts are driven via the rack by enabling the driving force of the driving unit to be transmitted from the first rotating body to the second rotating body via the transmission shaft. Compared with the door drive device, the sliding resistance can be reduced without using grease or the like, so that the transmission efficiency can be improved by reliably and smoothly transmitting the driving force to the first and second rotating bodies. ..

In addition, since the transmission shaft is configured to be able to transmit the driving force to the first and second rotating bodies by rotating, the conventional technology requires a space for the rack to move diagonally in the vertical direction in the air conditioning case. Space can be saved as compared with the door drive device of the above, and the size of the device can be reduced accordingly.

Further, since the length of the transmission shaft along the rotation axis direction can be adjusted by the adjustment mechanism, for example, the distance between the first rotating body and the second rotating body varies due to manufacturing error, assembly variation, and the like. Even in this case, by adjusting the distance between the first connection portion and the second connection portion with the transmission shaft, it can be easily and surely assembled at a predetermined position, so that the assembling property can be improved. Further, by assembling the transmission shaft at a predetermined position with respect to the first and second rotating bodies, the operating resistance between the first and second rotating bodies and the transmission shaft can be reduced and the transmission shaft can be smoothly operated.

Further, the transmission shaft is composed of a plurality of divided bodies that can be divided in the direction of the rotation axis, the first connecting portion is provided in one divided body, the second connecting portion is provided in the other divided body, and the one and the other are divided. It is preferable to make the body relatively movable in the rotation axis direction and to regulate the relative movement of the transmission shaft in the rotation direction.

Further, the rotation axis of the second rotating body may be provided in parallel with the rotation axis of the first rotating body.

Furthermore, it is preferable to drive either the first rotating body or the second rotating body by the driving unit.

Further, it is preferable to connect either one of the first rotating body and the second rotating body to the drive unit via the link mechanism 82.

Further, the first and second connecting portions may be configured by engaging the first gear provided on the first and second rotating bodies with the second gear provided on the transmission shaft.

According to the present invention, the following effects can be obtained.

That is, by providing a transmission shaft that connects the first rotating body that drives the first door and the second rotating body that drives the second door in the air-conditioning case so as to be able to transmit the driving force from the drive unit. Compared with the door drive device according to the prior art in which the first and second shafts are driven via the rack, the sliding resistance can be reduced without using grease or the like, so that the first and second rotating bodies can be driven. Since the force transmission efficiency can be improved and the space for the rack to move diagonally up and down in the air conditioning case is not required, the size can be reduced as compared with the conventional door drive device.

Further, even if the distance between the first rotating body and the second rotating body varies due to manufacturing error, assembly variation, etc., the distance between the first connecting portion and the second connecting portion is transmitted to the adjusting mechanism of the transmission shaft. By adjusting with, it is possible to easily and surely assemble to a predetermined position, so that the assembleability can be improved.

It is an overall front view of the air conditioner for vehicles to which the door drive device which concerns on embodiment of this invention is applied. 2A is a cross-sectional view taken along line IIA-IIA of FIG. 1, and FIG. 2B is a cross-sectional view taken along line IIB-IIB of FIG. 2A. It is a schematic front view which simplifies the driving force transmission mechanism shown in FIG. FIG. 4A is a schematic front view showing a driving force transmission mechanism according to a modified example, and FIG. 4B is a schematic front view showing a state in which the first and second link plates are rotated from the state of FIG. 4A.

A preferred embodiment of the door drive device according to the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, reference numeral 10 indicates a vehicle air conditioner to which the door drive device according to the embodiment of the present invention is applied.

As shown in FIG. 1, the vehicle air conditioner 10 has an air conditioner case 12 constituting each air passage, an evaporator 14 disposed inside the air conditioner case 12 to cool the air, and the air to be heated. A heater core 16 to be used, an air mixing mechanism 18 that mixes cold air and hot air whose temperature has been adjusted in the air conditioning case 12 at a predetermined mixing ratio to obtain mixed air, and a drive unit provided on the side surface of the air conditioning case 12. A driving force transmission mechanism (door driving device) 22 for transmitting the driving force from 20 to the air mixing mechanism 18 is included.

Inside the air conditioning case 12, an evaporator 14 is provided on the upstream side (direction of arrow A), a heater core 16 is provided on the downstream side (direction of arrow B) with respect to the evaporator 14, and the evaporator 14 and the heater core 16 are provided. When the air cooled by the evaporator 14 is circulated downstream, an air mix mechanism 18 for adjusting the flow amount and the flow state is provided between the two.

The air mix mechanism 18 includes a first air mix door (door) 24 provided above (in the direction of arrow D) and a second air mix door (door) provided below the first air mix door 24 (in the direction of arrow E). The first and second air mix doors 24, 26 are composed of, for example, a plate having an arcuate cross section formed with a large radius, and are separated from the evaporator 14, that is, the heater core 16 side (that is, the heater core 16 side () 26. It is formed so as to have a gentle convex shape toward the arrow B direction).

Further, the first and second air mix doors 24 and 26 are provided along the width direction of the air conditioning case 12 (direction of arrow C in FIG. 2A), and the guide portion provided on the inner wall surface of the air conditioning case 12. A rack gear (not shown) is provided along the inner peripheral surface facing the evaporator 14, which is guided along the 28.

As shown in FIGS. 1 to 3, the driving force transmission mechanism 22 has a first and second door shaft (first and second door shafts (not shown) meshed with rack gears (not shown) of the first and second air mix doors 24 and 26, respectively. 1 rotating body, 2nd rotating body) 30, 32 and a transmission shaft 34 meshed with the ends of the 1st and 2nd door shafts 30 and 32.

The first and second door shafts 30, 32 are provided between the first and second air mix doors 24, 26 and the evaporator 14, and are provided so as to be substantially parallel to each other. The first and second door shafts 30 and 32 extend along the width direction of the air conditioning case 12 (in the direction of arrow C in FIG. 2), and both ends thereof are formed on the wall portion 36 of the air conditioning case 12. It is rotatably supported by being inserted into the hole 38. That is, the first and second door shafts 30 and 32 are provided so as to extend substantially horizontally along the width direction (arrow C direction).

Further, one end of the first and second door shafts 30 and 32 is inserted into the hole 38 of the air conditioning case 12 and protrudes outward by a predetermined length, and the first outer peripheral surface thereof is formed with gear teeth. And the second gear portion (first connection portion, second connection portion) 40, 42 are formed. The first and second gear portions 40 and 42 are spur gears having a plurality of gear teeth engraved along the circumferential direction of the first and second door shafts 30 and 32.

The transmission shaft 34 is composed of, for example, first and second divided shafts (divided bodies) 44 and 46 that can be divided in the axial direction (arrows D and E directions), and is provided on the outside of one wall portion 36 in the air conditioning case 12. And is provided so as to be orthogonal to the axial direction (arrow C direction) of the first and second door shafts 30 and 32. That is, the transmission shaft 34 is provided so as to extend along the vertical direction.

The first division shaft 44 is provided above the transmission shaft 34 (in the direction of arrow D), and is formed on a first shaft portion 48 made of a shaft body having a constant diameter and an upper end portion of the first shaft portion 48. It has a face gear (first connection portion, second connection portion) 50, and a convex portion 52 protruding toward the second division shaft 46 side (arrow E direction) is formed at the lower end portion of the first shaft portion 48. Will be done. As shown in FIG. 2B, the convex portion 52 is formed, for example, in a semicircular cross section in which a part of the circular cross section is cut out in a plane.

The first face gear 50 has an annular wall 54 that is radially outwardly expanded from the first shaft portion 48 and then erected in an annular shape upward (in the direction of arrow D), and is located at the upper end of the annular wall 54. Gear teeth 50a are formed along the line. That is, the first face gear 50 has gear teeth 50a in the axial direction of the first shaft portion 48.

The second split shaft 46 is provided below the first shaft portion 48 (in the direction of arrow E) on the transmission shaft 34, and is a second shaft portion 56 formed of a shaft body having a constant diameter and a lower end portion of the second shaft portion 56. It has a second face gear (first connection portion, second connection portion) 58 formed in the above, and the upper end portion of the second shaft portion 56 is in a direction away from the first division shaft 44 (arrow E direction). A recess 60 is formed. The concave portion 60 is formed in a semicircular cross section having the same cross-sectional shape corresponding to the convex portion 52 (see FIG. 2B).

The second face gear 58 has an annular wall 62 that is radially outwardly expanded from the second shaft portion 56 and then erected in an annular shape downward (in the direction of arrow E), and is located at the upper end of the annular wall 62. Gear teeth 58a are formed along the line. That is, the second face gear 58 has gear teeth 58a in the axial direction of the second shaft portion 56.

Further, the diameter of the second face gear 58 is formed to be substantially the same as the diameter of the first face gear 50. In other words, the first and second face gears 50 and 58 are formed in a U-shaped cross section.

Further, in the transmission shaft 34, the first and second division shafts 44 and 46 are rotatably supported by a set of support portions 64a and 64b protruding in the horizontal direction from the wall portion 36 of the air conditioning case 12, and the transmission shaft 34 is upwardly supported. When one of the support portions 64a provided on the side (direction of arrow D) comes into contact with the lower surface of the first face gear 50, the lower side of the first division shaft 44 including the first face gear 50 (direction of arrow E). It regulates the movement to.

Then, in the transmission shaft 34, the convex portion 52 of the first division shaft 44 is inserted into the concave portion 60 of the second division shaft 46, and as shown in FIGS. 2A and 2B, the convex portion 52 having a semicircular cross section. And the recess 60 are engaged with each other to restrict their movement in the rotational direction, and they are connected in a state where they can move relative to each other in the axial direction (arrows D and E), and the first face gear 50 is connected. The gear teeth 50a of the second face gear 58 are meshed with the first gear portion 40 of the first door shaft 30 arranged above, and the gear teeth 58a of the second face gear 58 are the second of the second door shaft 32 arranged below. It is meshed with the gear portion 42. As a result, the first and second door shafts 30 and 32 are meshed with each other so as to be substantially orthogonal to the transmission shaft 34.

That is, the convex portion 52 and the concave portion 60 of the transmission shaft 34 are connected by connecting the first division shaft 44 and the second division shaft 46 so as to be relatively movable in the axial direction (arrows D and E directions). It functions as an adjustment mechanism that can adjust the longitudinal dimension of the shaft 34.

The first and second divided shafts 44 and 46 constituting the transmission shaft 34 are connected so as to be relatively movable in the axial direction (arrows D and E directions) under the engaging action of the convex portion 52 and the concave portion 60. The configuration is not limited to the above, and for example, the two split shafts may be integrated and the first and second face gears 50 and 58 may be provided so as to be movable in the axial direction with respect to both ends thereof. ..

The drive unit 20 is, for example, a rotational drive source such as an actuator that is rotationally driven by a control signal from a controller (not shown), and a drive gear 68 having a plurality of gear teeth on the outer peripheral surface is connected to the drive shaft 66. It meshes with the first gear portion 40 of the first door shaft 30 on the upper side opposite to the first face gear 50. The drive shaft 66 is provided substantially in parallel with the first and second door shafts 30 and 32. Then, when the drive unit 20 is rotationally driven, the driving force is transmitted to the first door shaft 30 via the drive shaft 66 and the drive gear 68 to rotate.

The vehicle air conditioner 10 to which the door drive device according to the embodiment of the present invention is applied is basically configured as described above, and its operation and action / effect will be described next.

First, when a control signal from the controller is input to the drive unit 20 by an operation of an occupant (not shown), the drive shaft 66 and the drive gear 68 rotate, and the drive gear 68 is meshed with the drive shaft 66. 1 The door shaft 30 rotates in a predetermined direction. Further, at the same time as the first door shaft 30 rotates, the driving force is transmitted to the transmission shaft 34 meshed with the first gear portion 40 via the first face gear 50 and rotates in a predetermined direction. That is, the driving force from the driving unit 20 is transmitted from the first door shaft 30 to the transmission shaft 34, so that the rotation directions thereof are converted to be orthogonal to each other.

Then, by rotating the second face gear 58 of the transmission shaft 34, the driving force is applied to the second door shaft 32 under the meshing action between the second face gear 58 and the second gear portion 42 of the second door shaft 32. Is transmitted to and rotates in a predetermined direction.

As a result, the first door shaft 30 and the second door shaft 32 rotate simultaneously and in different directions via the transmission shaft 34 under the driving action of the drive unit 20, and accordingly, in the air conditioning case 12. The first and second air mix doors 24, 26 meshed with the first and second door shafts 30, 32 slide along the guide portion 28 in a direction approaching each other or a direction away from each other. ..

For example, when the first and second air mix doors 24 and 26 shown in FIG. 1 are located close to each other, the flow path to the heater core 16 side is blocked, and the cold air cooled by the evaporator 14 is discharged to the heater core 16. The air that has passed through the evaporator 14 is sent to the vicinity of the occupant's face in the passenger compartment without flowing to the heater core 16 because the first and second air mix doors 24 and 26 are separated from each other. By passing through, it is heated and becomes warm air, which is sent to the vicinity of the occupant's feet in the passenger compartment.

As described above, in the present embodiment, the first door shaft 30 for driving the first air mix door 24 provided in the air conditioning case 12 and the second door shaft 32 for driving the second air mix door 26 are provided. A transmission shaft 34 is provided on the outside of the air conditioning case 12 so as to be orthogonal to the axial direction of the first and second door shafts 30, 32, and the transmission shaft 34 is the first door shaft 30. 1st gear portion 40 and the second gear portion 42 of the second door shaft 32 are meshed and connected to each other.

Therefore, the driving force of the drive unit 20 is transmitted to the first door shaft 30 via the first gear unit 40, and at the same time, the transmission shaft is transmitted via the first face gear 50 meshed with the first gear unit 40. By being transmitted to 34, the driving force is transmitted to the second door shaft 32 meshed with the second face gear 58 under the rotational action of the transmission shaft 34.

As a result, the driving force of the drive unit 20 is transmitted to the first and second doors via the transmission shaft 34, as compared with the door drive device according to the prior art in which the two first and second shafts are driven via the rack. By making it possible to transmit to the shafts 30 and 32, sliding resistance can be reduced without using grease or the like, and the driving force can be reliably and smoothly transmitted to the first and second door shafts 30 and 32. The transmission efficiency can be improved.

Further, the transmission shaft 34 is configured to be able to transmit the driving force to the first and second door shafts 30 and 32 by rotating outside the air conditioning case 12. Therefore, it is possible to save space compared to the conventional door drive device that requires space for the rack to move diagonally up and down in the air conditioning case, and the size of the device can be reduced accordingly. Can be planned.

Further, by forming the first and second split shafts 44 and 46 of the transmission shaft 34 so as to be relatively movable along the axial direction, for example, between the first door shaft 30 and the second door shaft 32. Even if the distance varies due to manufacturing errors, assembly variations, etc., the first face gear is adjusted by moving the first division shaft 44 and the second division shaft 46 in the axial direction to adjust the distance. The 50 can be meshed with the first gear portion 40 and the second face gear 58 can be meshed with the second gear portion 42 to be easily and surely assembled at a predetermined position.

As a result, the assembling property of the driving force transmission mechanism 22 can be improved, and further, by assembling the transmission shaft 34 at a predetermined position with respect to the first and second door shafts 30 and 32 with high accuracy, both of them can be assembled. It can be operated smoothly without increasing the operating resistance between them.

Furthermore, by providing a transmission shaft 34 that drives the first door shaft 30 with the driving force from the driving unit 20 and at the same time transmits this driving force to the second door shaft 32, 2 by a single driving unit 20. The first and second door shafts 30 and 32 can be driven to open and close the first and second air mix doors 24 and 26. Therefore, as compared with the case where separate drive units are provided to drive the first and second door shafts 30, 32, it is possible to reduce the number of parts and the power consumption.

On the other hand, in the above-mentioned driving force transmission mechanism 22, the case where the driving force from the driving unit 20 is directly transmitted to the first and second door shafts 30 and 32 via the transmission shaft 34 without decelerating has been described. , Not limited to this, for example, as in the driving force transmission mechanism 80 shown in FIGS. 4A and 4B, by interposing a link mechanism 82, the transmission is transmitted to the first and second door shafts 30 and 32. It is also possible to give a predetermined characteristic to the driving force to be transmitted.

In this driving force transmission mechanism 80, as shown in FIGS. 4A and 4B, the first link plate 84 connected to the drive shaft 66 in the drive unit 20 and the first link plate 84 connected to one end of the first door shaft 30. It has a link mechanism 82 including a two-link plate 86.

The first link plate 84 is formed, for example, in a disk shape, and the drive shaft 66 of the drive source is connected to a position eccentric from the center of the first door shaft 30 in a direction away from the first door shaft 30. That is, the first link plate 84 rotates in a trajectory that approaches and separates from the first door shaft 30 under the driving action of the driving unit 20.

The driving force transmission mechanism 80 shown in FIG. 4A is in a state where the first link plate 84 is closest to the first door shaft 30.

Further, in the first link plate 84, a link groove 88 is formed at a position substantially symmetrical with a portion connected to the drive shaft 66 with the center thereof interposed therebetween. The link groove 88 is formed in a substantially V-shaped cross section extending radially outward from the center of the first link plate 84, is formed in the vicinity of the outer edge portion of the first link plate 84, and is formed along the circumferential direction. A linear confluence in which the extending first and second branch portions 90 and 92 and the ends of the first branch portion 90 and the second branch portion 92 are merged while gently curving toward the center side, respectively. It has a part 94 and.

The first and second branch portions 90 and 92 are formed so as to have a symmetrical shape with the merging portion 94 as the center.

The second link plate 86 is formed, for example, in an elliptical shape, one end portion along a long axis thereof is connected to one end portion of the first door shaft 30, and a link pin 96 is formed at the other end portion. It protrudes along the axial direction of the 1-door shaft 30. Then, the link pin 96 is inserted into the link groove 88 of the first link plate 84.

Then, in the driving force transmission mechanism 80 having the link mechanism 82 described above, first, as shown in FIG. 4A, the link pin 96 is located at the confluence portion 94 of the link groove 88, and the link pin 96 is the first. As shown in FIG. 4B, the first link plate centered on the drive shaft 66 is driven by the drive unit 20 from a state in which the door shaft 30, the transmission shaft 34, and the second door shaft 32 are arranged substantially in a straight line. The 84 rotates in a predetermined direction (clockwise), and the link pin 96 inserted through the link groove 88 moves from the merging portion 94 to one of the first branch portions 90. As a result, the second link plate 86 is tilted counterclockwise, so that the first door shaft 30 rotates in a predetermined direction (counterclockwise). At this time, the rotation direction of the drive unit 20 and the first link plate 84 is opposite to the rotation direction of the second link plate 86 and the first door shaft 30.

At this time, while the link pin 96 is moving through the confluence portion 94 of the link groove 88, the second link plate 86 is rotating greatly, while moving the first branch portion 90 or the second branch portion 92. During that time, the second link plate 86 hardly rotates, and the first door shaft 30 and the first air mix door 24 do not operate significantly and are driven gently.

Further, as the first door shaft 30 rotates, a driving force is transmitted to the second door shaft 32 via the transmission shaft 34, and the second door shaft 32 rotates at the same rotation as the first door shaft 30. This activates the second air mix door 26.

Like the driving force transmission mechanism 80 described above, the first link plate 84 having the link groove 88 is connected to the driving shaft 66 of the driving unit 20, and the link of the second link plate 86 connected to the first door shaft 30. By inserting the pin 96 into the link groove 88, the characteristics when the driving force from the driving unit 20 is transmitted to the first and second door shafts 30 and 32 can be freely changed.

That is, by changing the shapes of the first and second link plates 84 and 86 and the shapes of the link grooves 88, the driving force from the driving unit 20 can be transferred to the first and second door shafts 30 and 32 with desired characteristics. It becomes possible to control the opening and closing of the first and second air mix doors 24 and 26.

Further, in the vehicle air conditioner 10 described above, the first door shaft 30 for driving the first air mix door 24 is directly rotationally driven by the driving force of the drive unit 20, and the second door shaft 32 is the transmission shaft 34. It is configured to be driven by using the driving force transmitted via the drive unit, but the present invention is not limited to this, and for example, the second door shaft 32 is directly rotationally driven by the drive unit 20, and the first door shaft 30 is driven. It may be rotationally driven by the driving force transmitted via the transmission shaft 34.

It should be noted that the door drive device according to the present invention is not limited to the above-described embodiment, and of course, various configurations can be adopted without departing from the gist of the present invention.

10 ... Vehicle air conditioner 12 ... Air conditioner case 20 ... Drive unit 22, 80 ... Driving force transmission mechanism 24 ... First air mix door 26 ... Second air mix door 30 ... First door shaft 32 ... Second door shaft 34 ... Transmission shaft 40 ... 1st gear part 42 ... 2nd gear part 44 ... 1st division shaft 46 ... 2nd division shaft 50 ... 1st face gear 52 ... convex part 58 ... 2nd face gear 60 ... concave portion 82 ... Link mechanism 84 … First link plate 86… Second link plate

Claims (6)

An air-conditioning case having a drive unit and a flow path through which air blown into the vehicle interior flows, a plurality of doors for adjusting the opening degree of the flow path inside the air-conditioning case, and a first of the plurality of doors. The first rotating body that drives the door 1, the second rotating body that drives the second door in conjunction with the first rotating body, and the driving force of the driving unit to the first and second rotating bodies. In the door drive device that transmits
The first rotating body and the second rotating body are connected so as to be able to transmit the driving force from the driving unit, and a transmission shaft orthogonal to the rotation axes of the first rotating body and the second rotating body is provided.
The transmission shaft has a first connecting portion connected to the first rotating body and a second connecting portion connected to the second rotating body.
The first connection portion is a conversion transmission mechanism that converts the rotation direction of the first rotating body and transmits the driving force of the drive portion to the transmission shaft, and also the first connection portion and the second connection portion. A door drive device characterized by being provided with an adjustment mechanism capable of adjusting the length along the rotation axis direction of the door. In the door drive device according to claim 1,
The adjusting mechanism is composed of a plurality of divided bodies that can be divided in the rotation axis direction in the transmission shaft, the first connecting portion is provided in one divided body, and the second connecting portion is provided in the other divided body. The door drive device is characterized in that one and the other divided bodies are relatively movable in the rotation axis direction, and the relative movement of the transmission shaft in the rotation direction is restricted. In the door drive device according to claim 1 or 2.
A door drive device characterized in that the rotation axis of the second rotating body is provided in parallel with the rotation axis of the first rotating body. The door drive device according to any one of claims 1 to 3.
A door driving device characterized in that either one of the first rotating body and the second rotating body is driven by the driving unit. In the door drive device according to any one of claims 1 to 4.
A door driving device, wherein either one of the first rotating body and the second rotating body is connected to the driving unit via a link mechanism. The door drive device according to any one of claims 1 to 5.
The first and second connecting portions are configured by engaging a first gear provided on the first and second rotating bodies with a second gear provided on the transmission shaft. A door drive that features.

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