JP7169833B2 - air conditioning register - Google Patents

Description

TECHNICAL FIELD The present invention relates to an air-conditioning register that blows conditioned air sent from an air conditioner from an outlet of a ventilation passage, and more particularly to an air-conditioning register provided with a shut damper that opens and closes the ventilation passage.

2. Description of the Related Art An instrument panel of a vehicle incorporates an air-conditioning register for blowing air for air-conditioning sent from an air-conditioning device. As one form of this air-conditioning register, there is known one that includes a cylindrical retainer having a ventilation passage for air-conditioning air and a shut damper for opening and closing the ventilation passage. The ventilation passage has an outlet at the downstream end in the flow direction of the air-conditioning air. In addition, the shut damper is arranged upstream of the air outlet in the flow direction in the ventilation passage, and is between an open position that opens the ventilation passage and a closed position that closes the ventilation passage with the damper shaft as a fulcrum. to tilt. A portion of the peripheral edge of the shut damper is formed by a pair of seal portions extending parallel to the axis of the damper shaft at a location radially outwardly distant from the damper shaft.

On the other hand, the inner wall surface of the retainer is formed with a pair of sealed portions with which the seal portions come into contact when the shut damper is in the closed position.
According to the above air-conditioning register, when the shut damper is tilted to the open position, each seal portion is largely separated from the sealed portion, and the ventilation passage is largely opened. Therefore, the air-conditioning air can be caused to flow downstream of the shut damper in the flow direction. On the other hand, when the shut damper is tilted to the closed position, each seal portion comes into contact with the corresponding sealed portion to close the air passage. Therefore, the air-conditioning air is restricted from flowing downstream of the shut damper in the flow direction.

As one form of the shut damper, there is known one that includes a pair of damper plates extending upstream in the flow direction from the damper shaft (see, for example, Patent Document 1). Both damper plates are tilted in opposite directions with the damper shaft as a fulcrum. At the open position, the sealing portions of the damper plates are adjacent to each other at the intermediate portion between the two sealed portions. Each seal part is largely separated from the part to be sealed, and the ventilation path is largely opened. On the other hand, in the closed position, each damper plate is inclined with respect to the flow direction. A seal portion of each damper plate contacts a corresponding sealed portion of the retainer to close the air passage.

JP 2018-16228 A

However, in the above-described conventional air-conditioning register, when the shut damper is tilted to the closed position, there is a risk that the entire seal portions will hit the corresponding sealed portions in their entirety at the same time, generating a hammering sound.

In particular, as described in Patent Document 1, in an air-conditioning register in which a shut damper has a pair of damper plates, the air-conditioning air presses both damper plates toward the opening side (closed position side). Therefore, when the shut damper is tilted toward the closed position, the entire seal portions may simultaneously hit the corresponding sealed portions with great force, generating a loud hammering sound.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air-conditioning register capable of reducing hammering noise when closing a ventilation passage with a shut damper.

An air-conditioning register that solves the above problems comprises a cylindrical retainer having a ventilation passage for air-conditioning air, and an open position for opening the ventilation passage and a closing position for closing the ventilation passage. a shut damper that tilts between positions, a portion of the peripheral edge of the shut damper extending radially outwardly away from the damper shaft and extending parallel to the axis of the damper shaft; and the inner wall surface of the retainer is formed with a pair of sealed portions that are in contact with the seal portions when the shut damper is in the closed position. At least a portion of each sealed portion in the direction along is inclined with respect to the coaxial line.

According to the above configuration, when the shut damper is tilted to the open position, each seal portion is largely separated from the portion to be sealed, and the ventilation passage is largely opened. Therefore, the air-conditioning air can flow downstream of the shut damper in the flow direction.

From this state, when closing the ventilation passage with the shut damper, the shut damper is tilted toward the closed position with the damper shaft as the fulcrum. As a result of this tilting, a pair of seal portions extending in parallel to the axis of the damper shaft at a portion of the peripheral edge portion of the shut damper that is radially outwardly distant from the damper shaft is moved to a corresponding position on the retainer. Get closer to the seal. When the shut damper is tilted to the closed position, the sealing portion contacts the corresponding sealed portion, thereby sealing between the two. At this time, there is a possibility that the contact between the sealing portion and the sealed portion may generate a hammering sound.

Here, while each sealing portion extends parallel to the axis of the damper shaft, at least a portion of each sealed portion in the direction along the coaxial line is inclined with respect to the coaxial line. Therefore, the area where the sealed portion and the sealed portion are in contact with each other at the same time is smaller than in the case where the entire sealed portion extends parallel to the axis, like the sealed portion. Therefore, the hammering sound caused by the contact between the sealing portion and the sealed portion is reduced.

In the air-conditioning register, it is preferable that the whole of each sealed portion in the direction along the axis is inclined with respect to the coaxial line.
According to the above configuration, the entire sealed portion in the direction along the axis of the damper shaft is inclined with respect to the coaxial line. The area to be sealed becomes smaller than when only a part of the sealed portion is inclined with respect to the axis. Therefore, the hammering sound caused by the contact between the sealing portion and the sealed portion is further reduced.

In the air-conditioning register, it is preferable that the whole of each sealed portion in the direction along the axis is inclined at a single angle with respect to the coaxial line.
According to the above configuration, the seal portion gradually comes into contact with the portion to be sealed as the shut damper tilts about the damper shaft. The area of simultaneous contact between the sealing portion and the portion to be sealed increases by the same degree as the shut damper tilts. Therefore, during the period from when the sealing portion starts contacting the portion to be sealed until the entirety of the sealing portion comes into contact with the portion to be sealed, the hammering sound caused by the contact between the sealing portion and the portion to be sealed is stably reduced. be.

In the air-conditioning register, it is preferable that the pair of sealed portions are inclined at the same angle with respect to the axis.
According to the above configuration, the hammering sound generated when one seal portion contacts the corresponding sealed portion and the hammering sound generated when the other seal portion contacts the corresponding sealed portion are the same. to some extent.

In the air-conditioning register, the shut damper includes a pair of damper plates extending upstream from the damper shaft in the flow direction of the air-conditioning air, and both damper plates tilt in opposite directions with the damper shaft as a fulcrum. The sealing portions of the damper plates are adjacent to each other at an intermediate portion between the sealed portions in the open position, and contact the sealed portions in a state inclined with respect to the flow direction in the closed position. It is preferable to be

When the shut damper has a pair of damper plates as in the above configuration, the seal portions of the damper plates are adjacent to each other at the intermediate portion between the sealed portions in the open position. Each sealing portion is largely separated from the corresponding sealed portion, and the ventilation passage is largely opened. Therefore, the air-conditioning air can flow downstream of the shut damper in the flow direction.

From this state, when the shut damper closes the ventilation path, both damper plates are tilted in opposite directions (to move away from each other) toward the closed position with their respective damper shafts as fulcrums. Along with this tilting, the sealing portion at the peripheral edge of each damper plate approaches the corresponding sealed portion and becomes inclined with respect to the flow direction. When each damper plate tilts to the closed position, the sealing portion contacts the corresponding sealed portion. A seal portion for each damper plate seals with the corresponding sealed portion to close the air passage. Therefore, the air-conditioning air is restricted from flowing downstream of the shut damper in the flow direction.

Here, the air-conditioning air presses the damper plates to open. Therefore, if the entire sealed portion extends parallel to the axis of the damper shaft, when each damper plate is tilted toward the closed position, the entire sealed portion will extend to the corresponding sealed portion. There is a risk that it will hit the entire area vigorously and cause a loud hammering sound.

In contrast, according to the above configuration, the sealing portion of each damper plate extends parallel to the axis of the damper shaft, whereas at least a portion of each sealed portion in the direction along the coaxial line extends coaxially. slanted to the line. Therefore, the area where the sealing portion and the sealed portion are in contact with each other at the same time is smaller than when the entire sealed portion extends parallel to the axis. Therefore, the hammering sound caused by the contact between the sealing portion of each damper plate and the corresponding sealed portion is effectively reduced.

According to the above-described air-conditioning register, it is possible to reduce hammering noise when the shut damper closes the ventilation passage.

1 is a diagram showing an embodiment embodied in an air-conditioning register for a vehicle, and is a rear view of the air-conditioning register viewed from the upstream side in the flow direction of the air-conditioning air. FIG. 2-2 line cross-sectional view in FIG. 3-3 line cross-sectional view in FIG. 4 is a partial cross-sectional view along line 4-4 in FIG. 2; 5A is an enlarged explanatory view showing the relationship between the sealing portion and the sealed portion in FIG. 3, and FIG. 5B is an enlarged explanatory view showing a part of FIG. FIG. 5 is an explanatory view showing an enlarged relationship between a sealing portion and a sealed portion in FIG. 4; 4(a) to 4(c) are explanatory diagrams showing how the seal portion gradually comes into contact with the portion to be sealed as the shut damper tilts toward the closed position; FIG.

An embodiment embodied in an air-conditioning register for a vehicle will be described below with reference to the drawings.
In the following description, it is assumed that the traveling direction (advance direction) of the vehicle is the front, the backward direction is the rear, and the height direction is the vertical direction. In addition, the vehicle width direction (horizontal direction) is defined with reference to the case where the vehicle is viewed from the rear.

In a vehicle interior, an instrument panel is provided in front of the front seats (driver's seat and front passenger's seat) of the vehicle, and air-conditioning registers are incorporated in the central portion, side portions, and the like in the left-right direction. As shown in FIGS. 1 and 2, the outer shell of the air-conditioning register 10 is composed of a cylindrical retainer 11 with both ends opened. The retainer 11 is for connecting an air duct (not shown) of the air conditioner and an opening (not shown) provided in the instrument panel, and is constructed by assembling a plurality of members in this embodiment. there is

The internal space of the retainer 11 constitutes a flow path (hereinafter referred to as "ventilation path 12") for air-conditioning air A1 sent from the air conditioner through the blower duct. Here, regarding the flow direction of the air conditioning air A1, the side closer to the air conditioner (the right side in FIG. 2) is referred to as "upstream", "upstream side", etc., and the side farther from the air conditioner (the left side in FIG. 2) is referred to as " shall be referred to as "downstream", "downstream side", and the like. The ventilation passage 12 has an inlet 13 for the air conditioning air A1 at its upstream end and an outlet 14 for the air conditioning air A1 at its downstream end.

The air passage 12 is surrounded by four walls of the retainer 11 . These four wall portions are composed of a pair of side wall portions 15 facing each other in the horizontal direction, and a top wall portion 16 and a bottom wall portion 17 facing each other in the vertical direction. A fin and a shut damper 25 are arranged in the retainer 11 in order from the outlet 14 toward the upstream.

The fins comprise multiple downstream fins 21 and multiple upstream fins 22 .
The plurality of downstream fins 21 are for changing the vertical direction of the air-conditioning air A1 blown out from the outlet 14. In the vicinity of the upstream of the outlet 14, the plurality of downstream fins 21 are vertically separated from each other in the left-right direction. extends to Each downstream fin 21 is supported by a laterally extending downstream fin shaft (not shown) so as to be vertically tiltable with respect to both side wall portions 15 . All the downstream fins 21 are mechanically connected by a link mechanism (not shown), and are tilted in synchronization so that they tilt in the same direction.

The plurality of upstream fins 22 are for changing the horizontal direction of the air-conditioning air A1 blown out from the outlet 14, and upstream of the downstream fins 21, vertically spaced apart from each other in the horizontal direction. extending in the direction In FIG. 2, a portion of one upstream fin 22 is illustrated. Each upstream fin 22 is supported by an upstream fin shaft (not shown) extending in the vertical direction so as to be tiltable in the horizontal direction with respect to the top wall portion 16 and the bottom wall portion 17 . All the upstream fins 22 are mechanically connected by a link mechanism (not shown), and are tilted in synchronization so that they tilt in the same direction.

The shut damper 25 is for opening and closing the ventilation passage 12 upstream of the upstream fins 22 in the retainer 11 and has a pair of upper and lower damper plates 26 and 27 .

A damper shaft 28 extending in the left-right direction is provided downstream of each of the damper plates 26 and 27 . The damper shaft 28 is provided at a location indicated by "x" in FIG.
As shown in FIGS. 2 to 4, a portion of the peripheral edge of the shut damper 25 extends radially outwardly away from the damper shaft 28 along the axis L1 of the damper shaft 28 (FIGS. 5(a), (see FIG. 6). In this embodiment in which the shut damper 25 includes a pair of upper and lower damper plates 26 and 27 , the upper damper plate 26 has a seal portion 31 and the lower damper plate 27 has a seal portion 32 . The seal portions 31 and 32 of the damper plates 26 and 27 are positioned upstream of the damper shaft 28 . The seal portions 31 and 32 are made of a softer material than the rest of the damper plates 26 and 27 and the retainer 11 .

In addition, as shown in FIGS. 5A and 6, the sealing portion 31 has a plurality of small uneven portions 30 formed along the axis L1. This is because, when the shut damper 25 is tilted from the open position to the closed position, even if a large vortex is generated between the sealing portion 31 and the sealed portion 34 immediately before reaching the closed position, the vortex can pass through the uneven portion 30 . This is to reduce the wind noise (whistling sound) by dividing it into small vortices. A similar concave-convex portion 30 is also formed on the seal portion 32, although not shown.

Each of the damper plates 26 and 27 has a damper shaft 28 as a fulcrum, and has an open position in which the ventilation passage 12 is greatly opened as indicated by a solid line in FIG. closed position and tilted in opposite directions to each other.

Incidentally, as shown in FIG. 2 , a stepped portion 33 is formed in the vicinity of the downstream side of the inlet 13 on the inner wall surface of the upper wall portion 16 . A stepped portion 35 is formed in the vicinity of the downstream side of the inlet 13 on the inner wall surface of the bottom wall portion 17 . The stepped portion 35 is positioned below the stepped portion 33 . The vertical interval between the inner wall surface of the top wall portion 16 and the inner wall surface of the bottom wall portion 17 is wider upstream than the two stepped portions 33 and 35 than downstream.

The stepped portion 33 is formed with a sealed portion 34 with which the sealing portion 31 contacts when the upper damper plate 26 is tilted to the closed position. The sealed portion 34 is inclined with respect to the flow direction so that the upper portion is positioned upstream. Similarly, the stepped portion 35 is formed with a sealed portion 36 with which the sealing portion 32 contacts when the lower damper plate 27 is tilted to the closed position. The sealed portion 36 is inclined with respect to the flow direction so that the lower portion is positioned upstream. Therefore, the distance between the sealed portions 34 and 36 in the vertical direction increases toward the upstream side.

Furthermore, as shown in FIGS. 5A and 6, the entire sealed portion 34 in the direction (horizontal direction) along the axis L1 of the damper shaft 28 forms a single angle θ1 with respect to the coaxial line L1. Inclined. Although not shown, the entire sealed portion 36 is also inclined at a single angle θ1 with respect to the axis L1. In this embodiment, both the sealed portions 34 and 36 are positioned at an angle θ1 of about 1°, in this embodiment, 0.8°, with respect to the axis L1 so that both the sealed portions 34 and 36 are located upstream toward the left side. Inclined.

As shown in FIG. 5B, the sealed portion 34 is formed with a plurality of recesses 37 along the axis L1. A similar recess 37 is also formed in the sealed portion 36, although not shown. Each recess 37 opens at the sealed portions 34 and 36 and is recessed toward the downstream side. By forming such a plurality of concave portions 37 at regular intervals, each of the sealed portions 34 and 36 undulates along the axis L1.

As shown in FIG. 2, the air conditioning register 10 further includes an operation knob 41 that is operated when the downstream fins 21, the upstream fins 22 and the shut damper 25 are operated. The operation knob 41 is constructed by assembling a plurality of members. These members are roughly composed of those that constitute the knob body 42 and those that constitute the rotating portion 43 . The knob body 42 is attached to the downstream fin 21 in the intermediate portion in the vertical direction so as to be slidable in the horizontal direction. The rotating portion 43 is rotatably attached to the knob body 42 .

A transmission shaft 44 extending along the flow direction of the air conditioning air A1 is arranged upstream of the operation knob 41 . A downstream end of the transmission shaft 44 is connected to the rotating portion 43 of the operation knob 41 by a joint 45 so as to be bendable and to transmit rotation.

Between the transmission shaft 44 and the damper plates 26, 27 is a rotation direction for changing the direction of rotation of the rotating part 43 transmitted via the transmission shaft 44 and transmitting it to the damper plates 26, 27. A conversion mechanism TM1 is provided. The rotation direction conversion mechanism TM1 includes an arm portion 46 provided downstream of the upper damper plate 26, an arm portion 47 provided downstream of the lower damper plate 27, and a cam member 48. . The upper arm portion 46 has a sliding end portion 46a at its downstream end. The lower arm portion 47 has a sliding end portion 47a at its downstream end.

Both damper plates 26 and 27 support an outer cylindrical member 49 with both ends opened, and the cam member 48 is rotatably mounted on this outer cylindrical member 49 . The cam member 48 has a cam groove 51 on its outer surface with which the sliding ends 46a and 47a are slidably engaged.

The upstream end of the transmission shaft 44 is connected to the cam member 48 by a joint 52 on the upstream side so as to be bendable and transmit rotation.
Next, the operation and effects of this embodiment configured as described above will be described.

The solid line in FIG. 2 shows the state when both damper plates 26 and 27 are in the open position. Both damper plates 26 and 27 are adjacent to each other at a substantially central portion between both sealed portions 34 and 36 . At this time, both the seal portions 31 and 32 are substantially parallel to the flow direction of the air conditioning air A1 and to the upper wall portion 16 and the bottom wall portion 17 . The upper seal portion 31 is greatly spaced downward from the sealed portion 34, and the lower seal portion 32 is greatly spaced upward from the sealed portion 36, so that the ventilation passage 12 is largely opened (fully opened). Therefore, the air-conditioning air A1 flows separately to the upper side and the lower side of the damper plates 26 and 27 . After passing through both damper plates 26 and 27, the air conditioning air A1 flows along the upstream fins 22, the downstream fins 21, and the like, and is then blown out from the outlet 14. As shown in FIG.

Switching of the shut damper 25 from the open position to the closed position is performed by rotating the rotary portion 43 of the operation knob 41 in one direction with respect to the knob body 42 . The rotation of the rotating portion 43 is transmitted to the cam member 48 via the joint 45 on the downstream side, the transmission shaft 44 and the joint 52 on the upstream side. As the cam member 48 rotates, the positions at which the sliding ends 46a and 47a are engaged in the cam groove 51 change. As the engagement positions change, the damper plates 26 and 27 are tilted about the damper shaft 28 toward the closed position in opposite directions (retracting directions). That is, the upper damper plate 26 is tilted counterclockwise, and the lower damper plate 27 is tilted clockwise. Due to these tilting movements, the seal portions 31 and 32 at the peripheral edge portions of the damper plates 26 and 27 come closer to the corresponding sealed portions 34 and 36 of the retainer 11, and the opening degree of the ventilation passage 12 decreases. The upper damper plate 26 is inclined so as to be higher toward the upstream side, and the lower damper plate 27 is inclined so as to be lower toward the upstream side.

When both damper plates 26 and 27 reach the closed position as indicated by the two-dot chain line in FIG. contact the portion 36; Both damper plates 26 and 27 are bent about the damper shaft 28 , and the seal portions 31 and 32 seal the corresponding sealed portions 34 and 36 to close the ventilation passage 12 . Therefore, the air-conditioning air A1 is restricted from passing through the shut damper 25 and flowing further downstream. Blowing of the air-conditioning air A1 from the outlet 14 is stopped.

When the seal portions 31 and 32 contact the sealed portions 34 and 36 as described above, there is a risk that hammering noise will be generated due to the contact. In particular, as in the present embodiment, the pair of damper plates 26 and 27 extending upstream from the damper shaft 28 are pressed by the air-conditioning air A1 to open the damper plates 26 and 27 . Therefore, if each of the sealed portions 34 and 36 were not entirely inclined with respect to the axis L1 of the damper shaft 28 (parallel to the axis L1), the shut damper 25 would be tilted to the closed position. , the entire sealing portions 31 and 32 may vigorously hit the corresponding sealed portions 34 and 36 as a whole, generating a loud hammering sound.

Here, in the present embodiment, as shown in FIGS. 5A and 6, the seal portions 31 and 32 of the damper plates 26 and 27 extend parallel to the axis L1 of the damper shaft 28. All of the sealed portions 34 and 36 in the direction along the coaxial line L1 are inclined at a single angle θ1 with respect to the coaxial line L1 so that the left side is located upstream.

Therefore, when the upper damper plate 26 tilts and the seal portion 31 approaches the closed position, the distance between the seal portion 31 and the sealed portion 34 differs in the direction along the axis L1. As shown in FIG. 7A, this interval is the narrowest at the left end of the seal portion 31, widens toward the right, and becomes maximum at the right end.

Therefore, as the damper plate 26 tilts, the left end of the sealing portion 31 first contacts the left end of the sealed portion 34 as shown in FIG. 7(b). As the damper plate 26 tilts, the contact portion of the sealing portion 31 with the portion to be sealed 34 moves to the right as shown in FIG. 7(c). When the damper plate 26 tilts to the closed position, as shown in FIGS. 5A and 6, the right end of the sealing portion 31 contacts or bends due to the contact with the right end of the sealed portion 34 . The contact area of the seal portion 31 with the portion to be sealed 34 increases as the damper plate 26 tilts toward the closed position. 7(c) and the like, the portion of the sealing portion 31 that is shown intersecting with the portion to be sealed 34 actually bends due to contact with the portion to be sealed 34, and the same portion 34 and the portion to be sealed 34 are bent. It is interfering.

Also, although not shown, in the lower damper plate 27, as with the upper damper plate 26, the sealing portion 32 sequentially contacts the sealed portion 36 from the left end toward the right end as it tilts. . The contact area of the sealing portion 32 with the portion to be sealed 36 increases as the damper plate 27 tilts toward the closed position.

Therefore, the areas where the sealed portions 31, 32 and the sealed portions 34, 36 are in contact with each other at the same time are smaller than when the sealed portions 34, 36 are entirely parallel to the axis L1. As a result, it is possible to reduce hammering noise caused by contact between the seal portions 31 and 32 of the damper plates 26 and 27 and the corresponding sealed portions 34 and 36 .

In particular, in the present embodiment, since the entirety of the sealed portions 34, 36 in the direction along the axis L1 is inclined with respect to the coaxial line L1, the sealed portions 31, 32 and the sealed portions 34, 36 are The contact area is smaller than when only part of the sealed portions 34 and 36 are inclined. Therefore, it is possible to further reduce the hammering sound caused by the contact between the seal portions 31, 32 and the sealed portions 34, 36. FIG.

In addition, in the present embodiment, since the entirety of the sealed portions 34 and 36 in the direction along the axis L1 is inclined at a single angle θ1 with respect to the coaxial line L1, the sealed portions 31 and 32 and the sealed portions The areas of contact with the seal portions 34 and 36 at the same time increase by the same degree as the shut damper 25 tilts. Therefore, during the period from when the sealing portions 31 and 32 start contacting the portions to be sealed 34 and 36 to when the entire sealing portions 31 and 32 come into contact with the portions to be sealed 34 and 36, the sealing portions 31 and 32 and the sealed portions 34 and 36 do not contact each other. It is possible to stably reduce hammering noise caused by contact with the seal portions 34 and 36 .

Furthermore, in the present embodiment, the angle θ1 at which the upper portion to be sealed 34 is inclined with respect to the axis L1 and the angle θ1 at which the lower portion to be sealed 36 is inclined with respect to the axis L1 are set to be the same. ing. Therefore, the hammering sound caused by the contact between the upper sealing portion 31 and the sealed portion 34 and the hammering sound caused by the contact between the lower sealing portion 32 and the sealed portion 36 can be reduced by the same degree.

The damper plates 26 and 27 are switched from the closed position to the open position by rotating the rotary portion 43 of the operation knob 41 in the opposite direction to the knob body 42 as shown in FIG. It is done by The rotation of the rotating portion 43 is transmitted to the cam member 48 via the joint 45 on the downstream side, the transmission shaft 44 and the joint 52 on the upstream side. The cam member 48 rotates, and the damper plates 26 and 27 are tilted toward the open position in opposite directions (approaching directions) with the damper shaft 28 as a fulcrum. That is, the upper damper plate 26 tilts clockwise, and the lower damper plate 27 tilts counterclockwise. Due to these tilting movements, the seal portions 31 and 32 at the peripheral edge portions of the damper plates 26 and 27 move away from the corresponding sealed portions 34 and 36, and the opening degree of the ventilation passage 12 increases. When both damper plates 26 and 27 reach the open position, the seal portions 31 and 32 are adjacent to each other substantially parallel to the top wall portion 16 and the bottom wall portion 17, and the ventilation passage 12 is largely opened.

As described above, by rotating the rotating portion 43, the opening degree of the ventilation passage 12 can be changed, and the amount of the air conditioning air A1 passing through the shut damper 25 in the ventilation passage 12 can be adjusted.

According to this embodiment, the following effects are obtained in addition to the above.
- In this embodiment, a plurality of recesses 37 are formed in each of the sealed portions 34 and 36 along the axis L1 of the damper shaft 28 (Fig. 5(b)).

Therefore, the air-conditioning air A1 is rectified when passing through each recess 37, and the generation of noise is suppressed. In addition, since the recesses 37 are provided in the portions to be sealed 34 and 36, the contact area between the portions to be sealed 34 and 36 and the sealing portions 31 and 32 when the damper plates 26 and 27 are respectively tilted to the closed position is It becomes smaller than when the concave portion 37 is not provided, and the hammering sound caused by contact can be further reduced.

It should be noted that the above-described embodiment can also be implemented as a modified example in which this is changed as follows.
<Regarding the shut damper 25>
The shut damper 25 is composed of a pair of damper plates 26 and 27, or a single damper plate, and is tilted between an open position and a closed position with a damper shaft as a fulcrum. may be changed to Also in this case, the same actions and effects as in the above embodiment can be obtained.

- As a drive mechanism for tilting the shut damper 25 between the open position and the closed position, a configuration different from that of the above embodiment may be adopted.
For example, an operation dial may be rotatably supported around the outlet 14, and the operation dial and the damper shaft of the shut damper may be connected by a link mechanism, a cam mechanism, or the like. In this case, by rotating the operation dial, the rotation may be transmitted to the damper shaft by a link mechanism or the like, and the shut damper may be tilted between the open position and the closed position.

The shut damper 25 may be tiltably supported by the damper shaft 28 with respect to the upper wall portion 16 and the bottom wall portion 17 instead of the side wall portions 15 .
- Concavo-convex part 30 in sealing parts 31 and 32 may be omitted.

<Regarding the sealed portions 34 and 36>
The angle θ1 at which the upper sealed portion 34 is inclined with respect to the axis L1 of the damper shaft 28 may be different from the angle θ1 at which the lower sealed portion 36 is inclined with respect to the axis L1.

Each of the sealed portions 34 and 36 may be tilted to the opposite side of the above-described embodiment with respect to the axis L1 of the damper shaft 28, that is, tilted so that the right side is located upstream.
The upper portion to be sealed 34 and the lower portion to be sealed 36 may be inclined in directions opposite to each other with respect to the axis L1 of the damper shaft 28 . That is, one of the parts to be sealed 34 (36) is slanted so that the left side of the axis L1 is positioned upstream, and the other part to be sealed 36 (34) is positioned on the upstream side of the axis L1 as it moves to the right. You may incline so that it may be located in

- Only a portion of each of the sealed portions 34 and 36 in the direction along the axis L1 of the damper shaft 28 may be inclined with respect to the coaxial line L1. Even in this case, the areas where the sealed portions 31, 32 and the sealed portions 34, 36 are in contact with each other at the same time are smaller than when the sealed portions 34, 36 extend parallel to the axis L1. Therefore, it is possible to obtain the effect of reducing hammering noise caused by contact between the sealing portions 31 and 32 and the sealed portions 34 and 36 .

The angle θ1 formed by the sealed portions 34 and 36 with respect to the axis L1 of the damper shaft 28 may be set to be the same as in the above embodiment, but may be different depending on the portion along the coaxial line L1. good.

For example, the sealed portions 34 and 36 may be curved such that the central portion in the direction along the axis L1 swells upstream, or conversely, the central portion is curved such that the central portion is recessed downstream. may

Also, the sealed portions 34 and 36 may be bent into a mountain shape in which the central portion in the direction along the axis L1 protrudes upstream, or conversely, in a valley shape in which the central portion is recessed downstream. may be bent to

- As the angle .theta.1 at which the sealed portions 34 and 36 are inclined with respect to the axis L1 increases, the effect of reducing the hammering sound caused by the contact of the sealed portions 31 and 32 with the sealed portions 34 and 36 increases. On the other hand, the sealing performance between the sealing portions 31, 32 and the sealed portions 34, 36 may deteriorate. Therefore, when setting the angle θ1, it is desirable to set it to a value that achieves both reduction in hammering sound and securing of sealing performance.

- The concave portion 37 in the sealed portions 34 and 36 may be omitted.
<About fins>
- At least one of the upstream fins 22 and the downstream fins 21 may be omitted. Also, other fins may be added to the upstream fins 22 and the downstream fins 21 .

<Applicable part>
- The above-mentioned air-conditioning register can also be applied to a place other than the instrument panel in the passenger compartment, such as to be incorporated in the dashboard.

The above-mentioned air-conditioning register can be widely applied not only to vehicles but also to vehicles as long as it has a shut damper for opening and closing the ventilation passage for air-conditioning air.

DESCRIPTION OF SYMBOLS 10... Register for air conditioning 11... Retainer 12... Ventilation path 25... Shut damper 26, 27... Damper plate 28... Damper shaft 31, 32... Sealing part 34, 36... Sealed part A1... Air conditioning air, L1... axis line, θ1... angle.

Claims (5)

a cylindrical retainer having a ventilation passage for air conditioning air;
a shut damper that is arranged in the retainer and tilts between an open position that opens the ventilation passage and a closed position that closes the ventilation passage with the damper shaft as a fulcrum;
A portion of the peripheral edge of the shut damper is formed by a pair of seal portions extending parallel to the axis of the damper shaft at a location radially outwardly distant from the damper shaft,
An air-conditioning register in which a pair of sealed portions that are in contact with the seal portions when the shut damper is in the closed position are formed on the inner wall surface of the retainer,
At least part of each sealed portion in the direction along the axis is inclined with respect to the coaxial line ,
A plurality of recesses recessed toward the downstream side in the flow direction of the air-conditioning air are formed in the sealed portion along the axis,
An air-conditioning register , wherein the seal portion has an uneven portion that serves as a flow path for the air-conditioning air to pass between the sealed portion and the sealed portion immediately before reaching the closed position . 2. The air-conditioning register according to claim 1, wherein the entirety of each sealed portion in the direction along the axis is inclined with respect to the coaxial line. 3. The air-conditioning register according to claim 2, wherein the entirety of each sealed portion in the direction along the axis is inclined at a single angle with respect to the coaxial line. 4. The air-conditioning register according to claim 3, wherein the pair of sealed portions are inclined at the same angle with respect to the axis. The shut damper includes a pair of damper plates extending upstream from the damper shaft in the flow direction of the air-conditioning air,
Both damper plates are tilted in opposite directions with the damper shaft as a fulcrum,
The sealing portions of each damper plate are adjacent to each other at an intermediate portion between the sealed portions in the open position, and are in contact with the sealed portions while being inclined with respect to the flow direction in the closed position. An air conditioning register according to any one of claims 1 to 4.

Images