JPH10170063A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a link operating sound by restricting a vibration of a blowing port changing-over door or a door side link plate in reference to the fact that the link operating sound or irregular sound is generated by a rapid change in speed of a guiding pin tracing a guiding groove under a repelling force of a door packing and its self weight, which causes a vibration of the blowing port changing-over door or the door side link plate. SOLUTION: This device is operated such that a guiding pin 27 formed at a lever side link plate 22 causes a door side link plate 23 and a rib 31 integrally formed with a device case 2 to be contacted to each other until a guide pin 27 formed at a lever side link plate 22 is disengaged from an idle region in the guiding groove 29 formed at the door side link plate 23. With such an arrangement as above, the guide pin 27 is prevented from being disengaged out of the idle region in the guide groove 29 and further the blowing port changing-over door 4 and the door side link plate 23 from being vibrated when an operation of the door side link plate 23 is started so as to reduce operating sound of the link.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which the opening of a ventilation passage is adjusted by rotating a plate-like door. The present invention relates to an outlet switching device for adjusting the degree.

[0002]

2. Description of the Related Art Conventionally, in a vehicle air conditioner, a plate-shaped outlet switching door for opening and closing a foot outlet is provided.
An outlet switching device is provided that accommodates a plate-shaped outlet switching door for selectively opening and closing the defroster outlet and the face outlet in a unit case.

In such an air outlet switching device, an air outlet switching lever provided on an air-conditioning operation panel is operated from a face mode to a bi-level mode, a foot mode, a foot mode or a foot mode.
When the air conditioner is moved to the defroster mode via the differential mode, the opening of the air outlet switching door changes. Then, as shown in FIG.
When the air outlet switching lever is moved from the defroster mode to the face mode, the lever side link plate 103 connected to the air outlet switching lever via the control wire rotates around the fulcrum when the air outlet switching lever is moved from the defroster mode to the face mode. An idle (lock) area where the door-side link plate 104 does not rotate is provided in the guide groove 105.

However, in the link mechanism 102, as shown in FIG. 6, the guide pin 106 of the lever side link plate 103 is connected to the guide groove 105 of the door side link plate 104.
The guide pin 1 traces the guide groove 105 due to the repulsive force of the door packing and its own weight at the moment when it comes out of the idle range of
There was a problem that abnormal noise (vibration noise due to chatter or the like) was generated due to the sudden change of the speed 06 and the vibration of the outlet switching door 101 and the door side link plate 104.

Therefore, conventionally, in the link mechanism 102,
As shown by a broken line in FIG. 7, by gradually changing the rotation trajectory R of the guide pin 106, the guide groove 1
There is a method of reducing the repulsive force of the door packing at the moment of going out of the idle range by making the 05 into a pseudo idle (first conventional example). Further, as shown in FIG. 8, there is a method of reducing the abnormal noise level by adding a packing 107 between the lever side link plate 103 and the door side link plate 104 (second conventional example). Here, in FIGS. 7 and 8, reference numeral 108 denotes a unit case, and reference numeral 109 denotes a rotation axis of the outlet switching door 101.

In Japanese Utility Model Publication No. 2-33066, a rib is provided on a side surface of a case of a door-side link plate so that an outer wall surface of a unit case and a rib of a door-side link plate are in an idle region. Regardless of this, a damper device (third conventional example) has been proposed in which a constant contact is made to suppress the vibration in the thrust direction (the direction parallel to the axial direction of the rotating shaft).

[0007]

However, in the first conventional example, as shown in FIG. 7, although the abnormal noise level is slightly lowered, the guide pin 106 is in the free area (the door side link plate is rotating). Area), there is a problem that abnormal noise is generated at the moment when the area goes out of the idle area. Further, in the second conventional example, as shown in FIG. 8, since another component such as the packing 107 is added, there arises a problem that the assembling workability is inferior and the manufacturing cost is increased. Further, in the third conventional example, since the backlash in the thrust direction is constantly reduced, the operating force of the link mechanism increases or the link mechanism increases in consideration of assembly errors due to manufacturing errors, shrinkage at low temperatures, and the like. May lock up.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a plate-like door and a first link, in which an abnormal noise generated when the first link member is actuated causes the speed of a guide pin for tracing the guide groove to rapidly change due to the repulsive force of the door packing and its own weight. Paying attention to the fact that abnormal noise is generated due to vibration of the member, the generation of abnormal noise at the time of operation of the first link member is prevented by absorbing or suppressing the vibration of the plate-like door and the first link member. The purpose is to:

[0009]

Means for Solving the Problems Claims 1 and 2
According to the invention described in (1), when the guide pin is in the idle region of the guide groove, the first link member does not rotate even if the second link member rotates. At this time, when the first link member comes into contact with the ridge of the case, an appropriate tension is applied to the first link member and the plate-like door until the moment when the guide pin goes out of the idle range. As a result, the second link member rotates, and the guide pin is out of the idle area of the guide groove, and
Since vibration of the first link member generated at the moment when the link member rotates can be absorbed or suppressed, generation of abnormal noise when the first link member starts rotating can be suppressed. When the guide pin goes out of the idle area of the guide groove, the first link member does not come into contact with the ridge of the case.
The operating force of the link member, that is, the plate-shaped door does not increase. Further, since a sufficient gap in the thrust direction between the case and the first link member can be ensured, locking of the first link member due to shrinkage at low temperature does not occur.

According to the third aspect of the present invention, when the guide pin enters the idle region of the guide groove and the first link member comes into contact with the ridge of the case, the edge portion of the first link member is moved. By preventing the first link member from being caught on the edge portion of the ridge, the first link member smoothly contacts the ridge.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

1 to 5 show an embodiment in which the present invention is applied to an air conditioner for a vehicle. FIGS. 1 to 3 show a link mechanism of an outlet switching door.
FIG. 4 is a diagram illustrating an outlet switching device of the vehicle air conditioner, and FIG. 5 is a diagram illustrating a main part of the outlet switching device.

Air outlet switching device 1 for vehicle air conditioner
Is composed of a unit case 2, air outlet switching doors 3, 4, a link mechanism (not shown) of the air outlet switching door 3, a link mechanism 5 of the air outlet switching door 4, etc., a defroster air outlet 6, a face air outlet. The air outlet mode is switched by selectively opening and closing the air outlet 7 and the foot air outlet 8. Here, in the present embodiment, the face (F
It has an ACE) mode, a bi-level (B / L) mode, a foot (FOOT) mode, a foot differential (F / D) mode, and a defroster (DEF) mode.

The unit case 2 is disposed on the front side of the cabin of the vehicle, and has an air passage 9 formed therein. In the air passage 9, a centrifugal fan 10, a heater core 11, and an air mixing door 12 are provided. The unit case 2 is provided on the leeward side of the air passage 9 with the first ventilation passage 13 communicating with the defroster outlet 6 and the face outlet 7.
And a third air passage 15 communicating with the foot outlet 8. The opening shapes of the first to third ventilation passages 13 to 15 are substantially rectangular.

Here, the defroster outlet 6 is a first outlet that mainly blows out hot air toward the inner surface of the windshield of the vehicle. The face outlet 7 is a second outlet that mainly blows out cool air toward the head and chest of the vehicle occupant. The foot outlet 8 is a third outlet that mainly blows out warm air toward the feet of the vehicle occupant.

Further, at the upper end of the unit case 2,
A packing 16 for improving the sealing property between the unit case 2 and a defroster duct (not shown) communicating the first ventilation path 13 and the defroster outlet 6 is mounted. In the vicinity of the packing 16, a packing 17 for improving a sealing property between the unit case 2 and a face duct (not shown) that connects the second ventilation path 14 and the face outlet 7 is mounted.

The outlet switching door 3 has a door body made of a resin member such as PP (polypropylene) resin. The outlet switching door 3 is a plate-like door having a pivot 18 provided at a substantially central portion thereof as a pivoting position, and includes a third air passage 15 communicating with the foot outlet 8 and a first air passage 15. FOOT door (FOOT) for selectively opening and closing the second ventilation passages 13 and 14
Door). Further, a door packing (resin member such as polyurethane foam) 19 for improving the sealing performance when the third ventilation passage 15 is opened and closed is provided on both end surfaces of the outlet switching door 3 by using a bonding means such as an adhesive. Installed.

The outlet switching door 4 has a door body made of a resin material such as PP (polypropylene) resin. The outlet switching door 4 is a plate-like door having a pivot shaft (shaft) 20 provided at one end (upper end in the figure) pivotally attached thereto, and is a defroster outlet 6 (first air passage 13). And a face differential door (FACE / DEF door) for selectively opening and closing the face outlet 7 (second ventilation path 14). Further, door packings (resin member such as polyurethane foam) are provided on both end surfaces of the outlet switching door 4 to enhance the sealing performance when one of the two first and second ventilation passages 13 and 14 is closed. 21 is attached using a bonding means such as an adhesive.

Next, the link mechanism 5 of the outlet switching door 4 of the present embodiment will be described in detail with reference to FIGS. The link mechanism 5 connects an air outlet switching lever (not shown) provided on an air-conditioning operation panel (not shown) arranged on the front surface of the vehicle interior of the vehicle and a control wire or a main link plate (neither is shown). And a door-side link plate 23 that rotates integrally with the outlet switching door 4.

The lever side link plate 22 is a second link member of the present invention, and is formed of a substantially U-shaped plate-like resin member such as PP (polypropylene) resin. Boss 2 integrally molded with
5a rotatably supported. A connection protrusion 26 to which a control wire for connecting the air outlet switching lever and the lever side link plate 22 is connected is integrally formed on one end surface of the lever side link plate 22.

When the connecting projection 26 is used as a guide pin, a main link plate which can also drive the outlet switching door 3 is provided between the control wire and the lever side link plate 22. The guide pin slides in a guide groove formed in the main link plate. A cylindrical guide pin 27 is integrally formed on the back surface on the other end side of the lever side link plate 22 so as to protrude toward the door side link plate 23 from the back surface. One end and the other end of the lever side link plate 22 are connected via a step 28.

The door side link plate 23 is a first link member of the present invention, and is made of a substantially oval plate-like resin member such as PP (polypropylene) resin.
Are supported so as to be rotatable around a rotary shaft 20 of the motor.
The rotation shaft 20 is rotatably supported by a boss 25b formed integrally with the unit case 2. In addition, the door side link plate 23 is attached to the boss 2
5b is supported movably in the thrust direction (axial direction).

The door-side link plate 23 rotates along the outer wall surface of the unit case 2 at a position separated by a predetermined gap (clearance: 3 mm to 25 mm) from the outer wall surface of the unit case 2. At the end of the door-side link plate 23, a fitting hole 23a into which a protruding portion 20a protruding from the outer wall surface of the unit case 2 of the rotating shaft 20 is formed. The end of the door-side link plate 23 is
It is fixed by using a bonding means such as caulking, welding or bonding.

The one end of the door-side link plate 23 (the lower end in FIG. 1) is overlapped with the other end of the lever-side link plate 22 (the upper end in FIG. 1). Reference numeral 23 is disposed closer to the unit case 2 than the lever side link plate 22 is.

Further, the door side link plate 23 includes
A substantially U-shaped guide groove 29 so that the front surface and the back surface can communicate with each other.
Is penetrating. The guide pin 27 of the lever side link plate 22 is slidably fitted in the guide groove 29. The guide groove 29 is formed to have a shape corresponding to the operation (rotation) pattern of the outlet switching door 4.

As shown in FIG. 2, the rotation of the lever-side link plate 22 is inserted into the guide groove 29 corresponding to the rotation of the lever-side link plate 22 between the face mode and the bi-level mode. An idle (lock) region where the door-side link plate 23 does not rotate is formed. This idle region is defined as
This is a portion having a shape corresponding to the rotation locus of the guide pin 27 of the lever side link plate 22.

In the guide groove 29 corresponding to the period from the bi-level mode to the foot mode, a free area is formed in which the door-side link plate 23 rotates in response to the rotation of the lever-side link plate 22. . As shown in FIG. 3, the door-side link plate 23 is provided on the left edge portion of the door-side link plate 23 in FIG.
A predetermined inclination angle (for example, 30 ° to 60 °)
°) (link-side inclined surface) 30 is formed.

Next, the outer wall shape of the unit case 2 will be described in detail with reference to FIGS. On the outer wall surface of the unit case 2, a rib 31 that contacts the door-side link plate 23 that constitutes the link mechanism 5 of the outlet switching door 4 is integrally formed so as to protrude outward.

This rib 31 is a ridge portion of the present invention, and as shown in FIGS. 1 and 2, the door 31 is moved until the guide pin 27 of the lever side link plate 22 comes out of the idle area of the guide groove 29. It has a length that contacts the side link plate 23 (for example, 3 mm to 25 mm). Also, rib 3
The width of 1 is, for example, about 3 mm to 5 mm. And
As shown in FIG. 3, the rib 31 has an inclined surface (case-side inclined surface) 32 that contacts the inclined surface 30. This inclined surface 32 corresponds to the inclined surface 3 of the door side link plate 23.
It is formed so as to have substantially the same inclination angle as 0.

The rib 31 is higher than the dimension between the outer wall surface of the unit case 2 and the side surface of the door-side link plate 23, and is formed between the outer wall surface of the unit case 2 and the link side surface of the door-side link plate 23. It has a height (e.g., 3 mm to 25 mm) lower than the dimension between.

[Operation of Embodiment] Next, the operation of the outlet switching device 1 of the vehicle air conditioner of the present embodiment will be briefly described with reference to FIGS.

When the vehicle occupant moves the air outlet switching lever provided on the air-conditioning operation panel to the FACE (face) position, as shown by a two-dot chain line in FIG. When the side link plate 22 is rotated leftmost about the support shaft 24, the door side link plate 23 is
As shown in FIG. 4, the air outlet switching door 4 closes the first air passage 13 communicating with the defroster air outlet 6 and the second airflow communicating with the face air outlet 7 as shown in FIG. By opening the road 14, the outlet mode becomes the face mode.

At this time, as shown by a dashed line in FIG. 3, the inclined surface 30 of the door side link plate 23 has the inclined surface 3 of the rib 31 integrally formed on the outer wall surface of the unit case 2.
2 is in contact with the door side link plate 2
3 is held between the outer case 3 and the outer wall surface of the unit case 2 with a predetermined gap in the thrust direction. As a result, relatively cool air flows into the second ventilation path 14, so that the cool air is mainly blown out from the face outlet 7 to the head and chest of the vehicle occupant, thereby cooling the vehicle interior.

Next, when the outlet switching lever is moved from the FACE (face) position to the B / L (bi-level) position, the outlet switching door 3 communicates with the foot outlet 8 in the third position.
The ventilation path 15 is almost fully opened. However, in the link mechanism 5,
The guide pin 27 slides in the guide groove 29, but the guide pin 27
Are sliding in the idle region of the guide groove 29, the door-side link plate 23 does not rotate. Therefore, since the door side link plate 23 does not move, the outlet switching door 4
Opens the second ventilation path 14 communicating with the face outlet 7,
The state where the first ventilation path 13 communicating with the defroster outlet 6 is closed is continued. At this time, the door side link plate 23
The inclined surface 30 is in contact with an inclined surface 32 of a rib 31 integrally formed on the outer wall surface of the unit case 2 as shown by a dashed line in FIG.

Thus, relatively cool air flows into the second ventilation path 14 among the air heated by the heater core 11 in accordance with the degree of opening of the air mix door 12, and relatively warm air flows into the third air passage.
It flows into the ventilation path 15. Therefore, the cool air is mainly blown out from the face outlet 7 to the head and chest of the vehicle occupant, and the warm air is mainly blown out from the foot outlet 8 to the foot of the vehicle occupant, so that comfortable heating of head and foot heat is performed.

Next, when the air outlet switching lever is to be moved from the B / L (bilevel) position to the FOOT (foot) position side, the air outlet switching door 3 is connected to the third air passage communicating with the foot air outlet 8. 15 is fully opened. And the link mechanism 5
Then, the lever-side link plate 22 rotates clockwise about the support shaft 24 via the control wire or the main link plate, and the door-side link plate 23 rotates counterclockwise about the rotation shaft 20. , The guide pin 27 comes out of the idle region of the guide groove 29.

At this time, the door side link plate 23 is
Until the guide pin 27 comes out of the idle region of the guide groove 29, as shown by the solid line in FIG.
1 is in contact with the inclined surface 32. For this reason, at the moment outside the idle range, the speed of the guide pin 27 that slides in the guide groove 29 due to the repulsive force of the door packing 21 and its own weight does not suddenly change, and the outlet switching door 4 and the door side link plate 23 are not changed. The occurrence of link operation noise (abnormal noise) is suppressed without vibration.

Thereafter, the air outlet switching lever is set to B / L
Even when moved from the (bilevel) position to the DEF (defroster) position, the door-side link plate 23 does not contact the rib 31, so that the operating force of the outlet switching lever does not increase. When the outlet switching lever is returned from the FOOT (foot) position to the B / L (bilevel) position, when the guide pin 27 enters the idle region of the guide groove 29, as shown by a solid line in FIG. The inclined surface 30 of the door-side link plate 23 contacts the inclined surface 32 of the rib 31.

[Effects of the Embodiment] In the link mechanism 5 of the outlet switching door 4 of the present embodiment, the guide pin 27 is
Door-side link plate 23 until the moment when the vehicle departs from the idle region (the region from the face mode to the bi-level mode).
When the inclined surface 30 of the rib 31 comes into contact with the inclined surface 32 of the rib 31, the lever side link plate 22 rotates, the guide pin 27 goes out of the idle area of the guide groove 29, and the door side link plate 23 rotates. Since the vibration of the door-side link plate 23 generated instantaneously can be absorbed or suppressed, the link operation sound when the door-side link plate 23 starts to rotate can be reduced.

When the guide pin 27 is out of the idle area (the area from the face mode to the bi-level mode) of the guide groove 29, the door side link plate 23 is separated from the rib 31 of the unit case 2, so that the lever side link plate 22 is free, and in the free area of the guide groove 29 (the area from the bilevel mode to the defroster mode), it is possible to prevent an increase in the operating force of the air outlet switching lever that moves the air outlet switching door 4.

Further, since the inclined surface 30 of the door-side link plate 23 and the inclined surface 32 of the rib 31 are in contact with each other until the guide pin 27 is out of the idle region of the guide groove 29, the unit case 2 and the door-side link A sufficient gap in the thrust direction with the plate 23 can be ensured. For this reason, even if there is an assembly error due to a manufacturing error, or if the unit case 2 contracts at a low temperature, the door side link plate 23
Does not contact the outer wall surface of the unit case 2, so that the door-side link plate 23 does not lock.

When the mode is changed from the foot mode to the bi-level mode, when the guide pin 27 enters the idle area of the guide groove 29 and the door side link plate 23 comes into contact with the rib 31 of the unit case 2, the door side Link plate 2
By preventing the edge portion 3 from being caught on the edge portion of the rib 31, the door-side link plate 23 can be brought into smooth contact with the rib 31. Thus, it is possible to prevent an increase in the operating force of the outlet switching lever.

By mounting the door packings 21 on both end surfaces of the outlet switching door 3, even if the outlet switching door 3 closes either the first ventilation path 13 or the second ventilation path 14, the wind is blocked. Since leakage can be prevented, the sealing performance when each ventilation path is closed can be significantly improved.

[Other Embodiments] In the present embodiment, the present invention is applied to the air outlet switching device 1 of a vehicle air conditioner. However, the present invention is applied to a ship, an aircraft, a factory, a building, an apartment house, or a vehicle excluding vehicles. It may be applied to a home air conditioner. In the present embodiment, the shape of the ribs 31 is a rectangular flat plate, but the shape of the ribs (protrusions) 31 may be a polygonal shape of a triangle or more, a circular shape, an elliptical shape, an elliptical shape, or a semicircular shape. Alternatively, a curved plate curved to the windward side may be used.

In the present embodiment, the first link member is constituted by only one door-side link plate 23, but the first link member may be constituted by two or more link plates.
In the present embodiment, the second link member is constituted by only one lever-side link plate 22.
It may be composed of more than two link plates.

In the present embodiment, the guide pin 27 is provided on the lever side link plate (second link member) 22 and the guide groove 29 is provided on the door side link plate (first link member) 23. May be provided with a guide pin, and the second link member may be provided with a guide groove. Further, the present invention may be applied to a link mechanism that drives the air outlet switching door 3, the air mix door 12, or the inside / outside air switching door.

In this embodiment, the air outlet switching door 3 is formed by integrally molding the door main body and the rotating shaft 18 with resin, and the door packing 19 made of resin is attached to both end surfaces of the door main body.
The door body may be a metal plate such as an iron plate, and the rotating shaft and the packing may be assembled. Similarly, in the present embodiment, the air outlet switching door 4 is formed by integrally molding the door body and the rotating shaft 20 with resin, and the door packing 21 made of resin is attached to both end surfaces of the door body. A metal plate such as an iron plate may be used, and the rotation shaft and the door packing may be assembled.

In the present embodiment, the centrifugal fan 10 and the heater core 11 are housed in the unit case 2. However, the centrifugal fan 10 and the evaporator may be housed in the unit case 2. And an evaporator may be accommodated between them.

In the present embodiment, the link mechanism 5 is driven by a manual operation means such as a manual operation lever such as an air outlet switching lever or a control wire.
May be driven by an actuator (link driving means) such as a motor. In the case of a link mechanism having a main link plate (lever side link member) between the lever side link plate 22 and link driving means such as a control wire, the guide groove of the main link plate is
An idle (lock) region in which the door-side link plate 23 does not rotate with respect to the rotation of the lever-side link plate 22 may be formed in a portion corresponding to the period from the foot mode to the defroster mode.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a link mechanism of an outlet switching door (embodiment).

FIG. 2 is an explanatory view showing a link mechanism of an outlet switching door (embodiment).

FIG. 3 is a sectional view taken along line AA of FIG. 2 (embodiment).

FIG. 4 is a cross-sectional view illustrating an outlet switching device of the vehicle air conditioner (the embodiment).

FIG. 5 is a sectional view showing a main part of the outlet switching device (embodiment).

FIG. 6 is a plan view showing a link mechanism of the outlet switching device (prior art).

FIG. 7 is a plan view showing a door-side link plate (first conventional example).

FIG. 8 is an explanatory view showing a door-side link plate (second conventional example).

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 outlet switching device 2 unit case 3 outlet switching door 4 outlet switching door (plate-like door) 5 link mechanism 6 defroster outlet 7 face outlet 8 foot outlet 9 air passage 13 first ventilation passage 14 second ventilation Path 15 Third ventilation path 18 Rotating shaft 19 Door packing 20 Rotating shaft 21 Door packing 22 Lever-side link plate (second link member) 23 Door-side link plate (first link member) 24 Support shaft (fulcrum) 27 Guide Pin 29 Guide groove 30 Inclined surface (inclined surface on link side) 31 Rib (protrusion) 32 Inclined surface (inclined surface on case side)

Claims (3)

[Claims] 1. A case in which an air passage through which air passes is formed, and a plate-like door provided in the case so as to be rotatable about a rotation axis and adjusting an opening degree of the air passage. A first link member rotatably provided about the rotation axis and integrally rotatable with the plate-like door; and a first link member provided rotatably about a fulcrum. A second link member for driving the plate-shaped door through the first link member or the second link member, wherein one of the first link member and the second link member has a shape corresponding to a rotation pattern of the plate-shaped door. An air conditioner comprising: a guide groove; and a guide pin that is slidably engaged with the guide groove on one of the other link member of the first link member and the second link member. The second link is provided in a part of the guide groove. An idle area in which the first link member does not rotate even if the second link member rotates, in a shape corresponding to the rotation locus of the material, and the case includes a rotation of the first link member. An air conditioner, wherein a ridge having a height to contact the first link member is provided only in a rotation range of the trajectory during which the guide pin slides in the idle region. . 2. The air conditioner according to claim 1, wherein a part of the second link member is overlapped with a part of the first link member, and the first link member is connected to the second link member. A case side surface that is disposed closer to the case than the link member and faces an outer wall surface of the case, and a link side surface that faces the second link member on a side opposite to the case side surface; The height of the portion is higher than the dimension between the outer wall surface of the case and the case side surface of the first link member, and is higher than the dimension between the outer wall surface of the case and the link side surface of the first link member. An air conditioner characterized by being low. 3. The air conditioner according to claim 1, wherein the first link member is provided at an edge portion contacting the ridge portion with respect to a rotation direction of the first link member. An inclined link-side inclined surface, wherein the ridge portion has a case-side inclined surface having an inclination angle substantially equal to that of the link-side inclined surface at an edge portion in contact with the link-side inclined surface. Air conditioner.