JP2020050137A - Air-conditioning register - Google Patents

Abstract

To reduce striking sound when closing a ventilation trunk by a shut damper.SOLUTION: An air-conditioning register 10 includes: a cylindrical retainer 11 having a ventilation trunk 12 of air-conditioning air A1; and a shut damper 25 arranged in the retainer 11, and tilting between an open position for opening the ventilation trunk 12 and a closed position for closing it, with a damper shaft 28 being a fulcrum. Part of a peripheral edge of the shut damper 25 is constituted by a pair of seal parts 31, 32 extending in parallel with an axial line L1 of the damper shaft 28 in a place being separated far away in the radial direction from the damper shaft 28. On an inner wall surface of the retainer 11, a pair of parts 34, 36 to be sealed is formed with which the seal parts 31, 32 come into contact respectively when the shut damper 25 is in the closed position. At least part of each of the parts 34, 36 to be sealed in the direction along the axial line L1 is inclined with respect to the axial line L1.SELECTED DRAWING: Figure 2

Description

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

  The instrument panel of the vehicle incorporates an air-conditioning register that blows out the air for air-conditioning sent from the air conditioner. As one form of the air-conditioning register, there is known an air-conditioning register including a cylindrical retainer having a ventilation path for air-conditioning air, and a shut damper for opening and closing the ventilation path. The ventilation path has an outlet at the downstream end in the flow direction of the air-conditioning air. Further, the shut damper is disposed upstream of the air outlet in the flow direction in the ventilation path, and has a damper shaft as a fulcrum between an open position for opening the ventilation path and a closed position for closing the ventilation path. To tilt. A part of the peripheral portion of the shut damper is configured by a pair of seal portions extending parallel to the axis of the damper shaft at a position radially outward from the damper shaft.

On the other hand, the inner wall surface of the retainer is formed with a pair of sealed portions that the seal portions contact when the shut damper is at the closed position.
According to the 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 path 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, and the ventilation path is closed. 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, one having a pair of damper plates extending from a damper shaft to an upstream side in the flow direction is known (for example, see Patent Document 1). Both damper plates are tilted in opposite directions about the damper shaft as a fulcrum. In the open position, the seal portions of the damper plates are adjacent to each other at an intermediate portion between the 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. The seal portion of each damper plate contacts the corresponding sealed portion of the retainer, and the ventilation passage is closed.

JP 2018-16228 A

  However, in the above-described conventional air-conditioning register, when the shut damper is tilted to the closed position, each of the seal portions may simultaneously hit the corresponding one of the sealed portions, and a tapping sound may be generated.

  In particular, as described in Patent Document 1, in an air-conditioning register in which a shut damper includes a pair of damper plates, the air-conditioning air presses both damper plates to a side that opens (closed position side). Therefore, when the shut damper is tilted toward the closed position, the whole of each seal part simultaneously and vigorously hits the whole of the corresponding part to be sealed, and a loud tapping sound may be generated.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an air-conditioning register that can reduce a tapping sound when a ventilation path is closed by a shut damper.

  An air-conditioning register that solves the above-mentioned problem includes a cylindrical retainer having a ventilation path for air-conditioning air, and an open position for opening the ventilation path and a closing position for closing and closing the ventilation path with the damper shaft serving as a fulcrum. And a pair of seals extending in parallel with the axis of the damper shaft at a position radially outward from the damper shaft at a portion of a peripheral portion of the shut damper. An air-conditioning register, comprising a pair of sealed portions formed on the inner wall surface of the retainer, wherein the seal portion is in contact with each other when the shut damper is at the closed position. At least a part of each sealed portion in the direction along the direction 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 sealed portion, and the ventilation path is largely opened. Therefore, the air-conditioning air can flow downstream of the shut damper in the flow direction.

  When the ventilation path is closed by the shut damper from this state, the shut damper is tilted toward the closed position with the damper shaft as a fulcrum. Along with this tilt, at a part of the peripheral edge of the shut damper that is distant outward in the radial direction from the damper shaft, a pair of seal portions extending in parallel with the axis of the damper shaft are formed by a pair of seal members corresponding to the retainer. Approach the seal. When the shut damper is tilted to the closed position, the seal portion comes into contact with the corresponding portion to be sealed, thereby sealing between them. At this time, a tapping sound may be generated due to the contact between the seal portion and the sealed portion.

  Here, while each seal portion extends parallel to the axis of the damper shaft, at least a part of each sealed portion in a direction along the coaxial line is inclined with respect to the coaxial line. Therefore, the area where the seal portion and the sealed portion are in contact at the same time is smaller than when the entirety of the sealed portion extends in parallel to the axis, similarly to the seal portion. Therefore, the tapping sound caused by the contact between the seal portion and the sealed portion is reduced.

In the above-described air-conditioning register, it is preferable that the entirety of each sealed portion in a direction along the axis is inclined with respect to the coaxial line.
According to the above configuration, since each of the sealed portions in the direction along the axis of the damper shaft is inclined with respect to the coaxial line, the sealing portion and the sealed portion simultaneously come into contact with the tilt of the shut damper. The area to be sealed is smaller than when only a part of the sealed portion is inclined with respect to the axis. Therefore, the hammering sound accompanying the contact between the seal portion and the sealed portion is further reduced.

In the above-described air-conditioning register, it is preferable that the entirety of each sealed portion in a 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 contacts the portion to be sealed with the tilt of the shut damper about the damper shaft as a fulcrum. The area where the seal portion and the portion to be sealed come into contact at the same time increases by the same degree as the shut damper tilts. Therefore, during the period from the time when the seal portion starts to contact the sealed portion to the time when the entire seal portion contacts the sealed portion, the tapping sound caused by the contact between the seal portion and the sealed portion is stably reduced. You.

In the air-conditioning register, it is preferable that the pair of sealed portions be inclined at the same angle with respect to the axis.
According to the above configuration, the tapping sound generated when one seal portion contacts the corresponding sealed portion is the same as the tapping noise generated when the other seal portion contacts the corresponding sealed portion. About.

  In the above air-conditioning register, the shut damper includes a pair of damper plates extending from the damper shaft to an upstream side in a flow direction of the air-conditioning air, and both damper plates tilt in opposite directions about the damper shaft as a fulcrum. The seal portion of each damper plate is adjacent to each other at an intermediate portion between the sealed portions in the open position, and contacts the sealed portion in the closed position while being inclined with respect to the flow direction. Preferably, it is

  When the shut damper includes a pair of damper plates as in the above configuration, in the open position, the seal portions of each damper plate are adjacent to each other at an intermediate portion between the sealed portions. Each seal 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 ventilation path is closed by the shut damper, the two damper plates are tilted in opposite directions (away from each other) toward the closed position with the 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 is in a state inclined with respect to the flow direction. When each damper plate is tilted to the closed position, the seal portion contacts the corresponding sealed portion. A seal portion for each damper plate seals between the corresponding sealed portion and closes the ventilation passage. Therefore, the air-conditioning air is restricted from flowing downstream of the shut damper in the flow direction.

  Here, the air for air conditioning presses to the side which opens both damper plates. Therefore, if the entire sealed portion extends in parallel with the axis of the damper shaft, when each damper plate is tilted toward the closed position, the entire sealed portion becomes the corresponding sealed portion. , And a loud tapping sound may be generated.

  On the other hand, according to the above configuration, while the seal portion of each damper plate extends parallel to the axis of the damper shaft, at least a part of each sealed portion in the direction along the coaxial line is coaxial. Slant to the line. Therefore, the area where the seal portion and the sealed portion are in contact at the same time is smaller than when the entirety of the sealed portion extends in parallel with the axis. Therefore, the tapping sound due to the contact between the seal portion of each damper plate and the corresponding sealed portion is effectively reduced.

  According to the air-conditioning register, it is possible to reduce a tapping sound when the ventilation path is closed by the shut damper.

It is a figure which shows one Embodiment embodied in the air-conditioning register for vehicles, and is the rear view which looked at the air-conditioning register from the upstream in the flow direction of air-conditioning air. FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a partial cross-sectional view taken along line 4-4 in FIG. 2. FIG. 5A is an enlarged explanatory diagram showing a relationship between a seal portion and a sealed portion in FIG. 3, and FIG. 5B is an enlarged explanatory diagram showing a part of FIG. Explanatory drawing which expands and shows the relationship between the seal part and the to-be-sealed part in FIG. (A)-(c) is explanatory drawing which shows a mode that a seal part contacts a to-be-sealed part gradually with the inclination to the closed position of a shut damper.

Hereinafter, an embodiment embodied in an air-conditioning register for a vehicle will be described with reference to the drawings.
In the following description, the traveling direction (forward direction) of the vehicle will be referred to as forward, the reverse direction as backward, and the height direction as vertical. In the vehicle width direction (left-right direction), the direction is defined based on the case where the vehicle is viewed from behind.

  In the passenger compartment, an instrument panel is provided in front of a front seat (driver's seat and front passenger's seat) of the vehicle, and an air conditioning register is incorporated in a central portion, a side portion, and the like in the left-right direction. As shown in FIGS. 1 and 2, the outer shell portion of the air-conditioning register 10 is constituted by a cylindrical retainer 11 having both ends opened. The retainer 11 is for connecting an air duct (not shown) of the air conditioner with an opening (not shown) provided in the instrument panel. In the present embodiment, the retainer 11 is configured by assembling a plurality of members. I have.

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

  The ventilation passage 12 is surrounded by four walls of the retainer 11. These four walls are composed of a pair of side walls 15 facing each other in the left-right direction, and an upper wall 16 and a bottom wall 17 facing each other in the vertical direction. In the retainer 11, fins and shut dampers 25 are arranged in order from the outlet 14 toward the upstream.

The fin includes a plurality of downstream fins 21 and a plurality of 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, and in the vicinity of the upstream of the outlet 14, the left and right fins 21 are vertically separated from each other. Extending to Each of the downstream fins 21 is supported by a side wall 15 so as to be tiltable in the up-down direction by a downstream fin shaft (not shown) extending in the left-right direction. All the downstream fins 21 are mechanically connected by a link mechanism (not shown), and are tilted in synchronization with each other to have the same inclination.

  The plurality of upstream fins 22 are for changing the left-right direction of the air-conditioning air A <b> 1 blown out from the outlet 14, and are located upstream and downstream of the downstream fin 21 while being vertically separated from each other. Extending in the direction. FIG. 2 shows a part of one upstream fin 22. Each of the upstream fins 22 is supported by an upper fin shaft (not shown) extending in the vertical direction with respect to the upper wall portion 16 and the bottom wall portion 17 so as to be tiltable in the left-right direction. All the upstream fins 22 are mechanically connected by a link mechanism (not shown), and are tilted in synchronization with each other so as to have the same inclination.

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

At a downstream portion of each of the damper plates 26 and 27, a damper shaft 28 extending in the left-right direction is provided. The damper shaft 28 is provided at a location indicated by “x” in FIG.
As shown in FIGS. 2 to 4, a part of the periphery of the shut damper 25 is located at a position radially outward from the damper shaft 28 in the axis L <b> 1 of the damper shaft 28 (FIG. 5A, FIG. (See FIG. 6). In the present 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 the seal portion 31 and the lower damper plate 27 has the seal portion 32. The seal portions 31, 32 for each of the damper plates 26, 27 are located upstream of the damper shaft 28. The seal portions 31 and 32 are formed of a material softer than the other portions of the damper plates 26 and 27 and the retainer 11.

  As shown in FIGS. 5A and 6, a plurality of small uneven portions 30 are formed on the seal portion 31 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 seal portion 31 and the sealed portion 34 immediately before reaching the closed position, the shut damper 25 is allowed to pass through the uneven portion 30. This is to reduce the wind noise (whistling sound) into small vortices. Although not shown, the similar uneven portion 30 is also formed on the seal portion 32.

  Each of the damper plates 26 and 27 has the damper shaft 28 as a fulcrum, an open position where the air passage 12 is largely opened as shown by a solid line in FIG. 2, and a closed air passage 12 as shown by a two-dot chain line in FIG. Between the closed positions.

  Meanwhile, as shown in FIG. 2, a step portion 33 is formed near the downstream of the inflow port 13 on the inner wall surface of the upper wall portion 16. A step 35 is formed on the inner wall surface of the bottom wall 17 near the downstream of the inflow port 13. The step portion 35 is located below the step portion 33. The vertical interval between the inner wall surface of the upper wall portion 16 and the inner wall surface of the bottom wall portion 17 is wider upstream of the step portions 33 and 35 than downstream.

  The stepped portion 33 is formed with a sealed portion 34 to which the seal 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 located more upstream. Similarly, the stepped portion 35 is formed with a sealed portion 36 to be brought into contact with the seal portion 32 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 located more upstream. Therefore, the distance between the sealed portions 34 and 36 in the vertical direction increases toward the upstream side.

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

  As shown in FIG. 5B, a plurality of recesses 37 are formed in the sealed portion 34 along the axis L1. Although not shown, the similar concave portion 37 is also formed in the sealed portion 36. Each recess 37 is open at the sealed portions 34 and 36 and is recessed toward the downstream side. By forming the 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 operating the downstream fin 21, the upstream fin 22, and the shut damper 25. The operation knob 41 is configured by assembling a plurality of members. These members mainly include a member forming the knob main body 42 and a member forming the rotating portion 43. The knob main body 42 is attached to the downstream fin 21 at an intermediate portion in the vertical direction so as to be slidable in the horizontal direction. The rotating unit 43 is rotatably mounted on the knob body 42.

  A transmission shaft 44 extending along the flow direction of the air-conditioning air A1 is disposed upstream of the operation knob 41. The downstream end of the transmission shaft 44 is connected by a joint 45 to the rotating part 43 of the operation knob 41 so as to be able to bend and transmit rotation.

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

  An outer cylinder member 49 having both ends opened is supported by both damper plates 26 and 27, and a cam member 48 is rotatably mounted on the outer cylinder member 49. The cam member 48 has a cam groove 51 on the 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 an upstream joint 52 so as to be able to bend and transmit rotation.
Next, the operation and effect of the present embodiment configured as described above will be described.

  The solid line in FIG. 2 shows a state when both damper plates 26 and 27 are at the open position. The damper plates 26 and 27 are adjacent to each other at a substantially central portion between the sealed portions 34 and 36. At this time, the two seal portions 31 and 32 are substantially parallel to the flow direction of the air-conditioning air A1, the upper wall portion 16 and the bottom wall portion 17. Since the upper seal part 31 is largely separated from the sealed part 34 downward and the lower seal part 32 is largely separated from the sealed part 36 upward, the ventilation passage 12 is largely opened (fully opened). Therefore, the air-conditioning air A1 flows separately on the upper and lower sides of the damper plates 26 and 27. The air-conditioning air A1 that has passed through the damper plates 26 and 27 flows along the upstream fins 22, the downstream fins 21 and the like, and then blows out from the blow-out port 14.

  The switching of the shut damper 25 from the open position to the closed position is performed by rotating the rotating portion 43 of the operation knob 41 in one direction with respect to the knob main body 42. The rotation of the rotating part 43 is transmitted to the cam member 48 via the downstream joint 45, the transmission shaft 44, and the upstream joint 52. As the cam member 48 rotates, the positions where the sliding ends 46a and 47a are engaged in the cam groove 51 change. Along with the change of both engagement positions, each of the damper plates 26 and 27 is tilted in the opposite directions (away from each other) toward the closed position with the damper shaft 28 as a fulcrum. That is, the upper damper plate 26 is tilted counterclockwise, and the lower damper plate 27 is tilted clockwise. Due to these tilts, the seal portions 31 and 32 at the periphery of each of the damper plates 26 and 27 approach 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 of the damper plates 26 and 27 reach the closed position due to the rotation of the rotating portion 43 as shown by a two-dot chain line in FIG. 2, the seal portion 31 comes into contact with the sealed portion 34 and the seal portion 32 is sealed. It contacts the part 36. The damper plates 26 and 27 are bent with the damper shaft 28 as a fulcrum, and the seal portions 31 and 32 seal between the corresponding sealed portions 34 and 36 to close the ventilation passage 12. Therefore, the air-conditioning air A1 is restricted from flowing through the shut damper 25 and flowing downstream therefrom. The blowing of the air-conditioning air A1 from the outlet 14 is stopped.

  When the seal portions 31 and 32 come into contact with the sealed portions 34 and 36 as described above, a tapping sound may be generated due to the contact. In particular, as in the present embodiment, the air-conditioning air A1 presses the pair of damper plates 26, 27 extending from the damper shaft 28 to the upstream side, respectively, toward the side that opens the damper plates 26, 27. Therefore, if the entirety of the sealed portions 34 and 36 is not inclined with respect to the axis L1 of the damper shaft 28 (parallel to the axis L1), when the shut damper 25 is tilted to the closed position. Therefore, the entirety of the seal portions 31 and 32 may vigorously hit the entirety of the corresponding sealed portions 34 and 36, and a loud tapping sound may be generated.

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

  Therefore, when the seal portion 31 approaches the closed position with the tilting of the upper damper plate 26, 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 narrowest at the left end of the seal portion 31, becomes wider toward the right side, and becomes maximum at the right end.

  Accordingly, as the damper plate 26 tilts, the left end of the seal portion 31 first contacts the left end of the sealed portion 34, as shown in FIG. 7B. The contact portion of the seal portion 31 with the sealed portion 34 moves rightward as the damper plate 26 tilts, as shown in FIG. When the damper plate 26 is tilted to the closed position, as shown in FIGS. 5A and 6, the right end of the seal portion 31 comes into contact with the right end of the sealed portion 34 or is bent by the contact. The contact area of the seal portion 31 with the sealed portion 34 increases as the damper plate 26 tilts toward the closed position. In FIG. 7 (c) and the like, the portion of the seal portion 31 that is shown crossing the sealed portion 34 is actually bent by contact with the sealed portion 34, and It is interfering.

  Although not shown, also with respect to the lower damper plate 27, similarly to the upper damper plate 26, the sealing portion 32 comes into contact with the sealed portion 36 in order from the left end to the right end with the tilting. . The contact area of the seal portion 32 with the sealed portion 36 increases as the damper plate 27 tilts toward the closed position.

  Therefore, the area where the seal portions 31, 32 and the sealed portions 34, 36 are in contact at the same time is smaller than when the entirety of the sealed portions 34, 36 is parallel to the axis L1. As a result, it is possible to reduce the tapping noise caused by the contact between the seal portions 31 and 32 of each 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 seal portions 31, 32 and the sealed portions 34, 36 are simultaneously formed. The contact area is smaller than when only a part of the sealed portions 34 and 36 is inclined. Therefore, it is possible to further reduce the tapping sound caused by the contact between the seal portions 31 and 32 and the sealed portions 34 and 36.

  Further, 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 are The area where the seal portions 34 and 36 come into contact at the same time increases by the same degree as the shut damper 25 tilts. Therefore, during the period from when the seal portions 31 and 32 start to contact the sealed portions 34 and 36 to when the entire seal portions 31 and 32 contact the sealed portions 34 and 36, the seal portions 31 and 32 are covered with the seal portions 31 and 32. The hitting sound accompanying the contact with the seal portions 34 and 36 can be stably reduced.

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

  The switching of the damper plates 26 and 27 from the closed position to the open position is performed by rotating the rotating portion 43 of the operation knob 41 with respect to the knob body 42 in a direction opposite to the above, as shown in FIG. This is done by: The rotation of the rotating part 43 is transmitted to the cam member 48 via the downstream joint 45, the transmission shaft 44, and the upstream joint 52. The cam member 48 rotates, and the damper plates 26 and 27 are respectively tilted in opposite directions (approaching directions) toward the open position 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 tilts, the seal portions 31 and 32 at the periphery of each 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 the damper plates 26, 27 reach the open position, the seal portions 31, 32 are adjacent to each other in a state substantially parallel to the upper wall portion 16 and the bottom wall portion 17, and the ventilation passage 12 is largely opened.

  As described above, the opening degree of the ventilation passage 12 is changed by rotating the rotating unit 43, 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 the present embodiment, the following effects can be obtained in addition to the above.
In the present 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. 5B).

  Therefore, the air-conditioning air A1 is rectified when passing through each recess 37, and the generation of noise is suppressed. Further, since the recessed portions 37 are provided in the sealed portions 34 and 36, the contact area between the sealed portions 34 and 36 and the seal portions 31 and 32 when the damper plates 26 and 27 are tilted to the closed positions, respectively, is reduced. This is smaller than the case where the concave portion 37 is not provided, and it is possible to further reduce the tapping sound accompanying the contact.

The above embodiment can be implemented as a modified example in which this is changed as follows.
<About the shut damper 25>
The shut damper 25 includes a damper plate constituted by a pair of damper plates 26 and 27 and a single damper plate, which is tilted between an open position and a closed position with a damper shaft as a fulcrum. May be changed to In this case, the same operation and effect as the above embodiment can be obtained.

-As a drive mechanism for inclining the shut damper 25 between the open position and the closed position, a configuration different from the above-described embodiment may be adopted.
For example, an operation dial may be rotatably supported around the outlet 14, and the operation dial and a damper shaft of the shut damper may be connected by a link mechanism, a cam mechanism, or the like. In this case, by turning 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 supported by the damper shaft 28 so as to be tiltable with respect to the upper wall portion 16 and the bottom wall portion 17 instead of the side wall portions 15.
-The uneven part 30 in the seal parts 31 and 32 may be omitted.

<About Sealed Parts 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 and the angle θ1 at which the lower sealed portion 36 is inclined with respect to the axis L1 may be different.

-Each sealed part 34, 36 may incline to the opposite side to the said embodiment with respect to the axis L1 of the damper shaft 28, ie, may incline so that it may be located so that the right side may be located upstream.
The upper sealed portion 34 and the lower sealed portion 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 sealed portions 34 (36) is inclined such that it is positioned more upstream toward the left side with respect to the axis L1, and the other sealed portion 36 (34) is upstream toward the right side with respect to the axis L1. May be inclined to be located at

  -Only a part of each to-be-sealed part 34, 36 in the direction along the axis L1 of the damper shaft 28 may incline with respect to the coaxial line L1. Even in this case, the area where the seal portions 31 and 32 and the sealed portions 34 and 36 come into contact at the same time is smaller than when the entirety of the sealed portions 34 and 36 extends in parallel to the axis L1. Therefore, the effect of reducing the tapping sound due to the contact between the seal portions 31 and 32 and the sealed portions 34 and 36 can be obtained.

  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 singly as in the above-described embodiment, but may be different depending on a portion in the direction 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 bulges upstream, or conversely, the central portions are curved so as to be concave downstream. You may.

  In addition, the sealed portions 34 and 36 may be bent in a mountain shape in which a central portion in the direction along the axis L1 projects upstream, or conversely, a valley shape in which the central portion is recessed downstream. May be bent.

  As the angle θ1 at which each of the sealed portions 34, 36 is inclined with respect to the axis L1 increases, the effect of reducing the tapping sound caused by the contact of the seal portions 31, 32 with the sealed portions 34, 36 increases. On the other hand, the sealing performance between the seal portions 31 and 32 and the sealed portions 34 and 36 may be reduced. Therefore, when setting the angle θ1, it is desirable to set the angle θ1 to a value that can achieve both a reduction in hitting sound and a secure sealing property.

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

<Applicable parts>
The air-conditioning register can be applied to a place different from the instrument panel in the vehicle compartment, for example, a register incorporated in a dashboard.

  The air-conditioning register is not limited to the vehicle, and can be widely applied as long as it has a shut damper that opens and closes the ventilation path of the air-conditioning air.

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

Claims (5)

A cylindrical retainer having a ventilation path for air conditioning air,
A shut damper that is disposed in the retainer and that tilts between an open position that opens the ventilation path and a closed position that closes the ventilation path with a damper shaft as a fulcrum,
A part of the peripheral edge portion of the shut damper is configured by a pair of seal portions extending in parallel to the axis of the damper shaft at a position radially outward from the damper shaft,
On the inner wall surface of the retainer, is an air-conditioning register formed with a pair of sealed portions each of which the seal portion contacts when the shut damper is at the closed position,
An air-conditioning register in which at least a part of each sealed portion in a direction along the axis is inclined with respect to the coaxial line.   The air-conditioning register according to claim 1, wherein the entirety of each sealed portion in a direction along the axis is inclined with respect to the coaxial line.   The air-conditioning register according to claim 2, wherein the entirety of the sealed portions in the direction along the axis is inclined at a single angle with respect to the coaxial line.   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 from the damper shaft to an upstream side in a flow direction of the air-conditioning air,
Both damper plates are tilted in opposite directions about the damper shaft as a fulcrum,
The seal portion of each damper plate is adjacent to each other at an intermediate portion between the sealed portions in the open position, and contacts the sealed portion in the closed position in a state inclined with respect to the flow direction. The air-conditioning register according to any one of claims 1 to 4.

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