JP2019093859A - Air-conditioning register - Google Patents

Abstract

To suppress occurrence of noise when air for air-conditioning passes an air flow adjustment part.SOLUTION: An air-conditioning register comprises a cylindrical retainer 10, and an upstream fin 21 (air flow adjustment part) having an upstream fan body 23 (plate-like part). The retainer 10 has a ventilation flue 11 for air A for air-conditioning. At both sides in a thickness direction of the upstream fin body 23, an adjustment surface 29, which adjusts a flow state of the air A for the air-conditioning, is formed. An eddy flow generating pattern part 32 is formed on each adjustment surface 29. The eddy flow generating pattern part 32 for each adjustment surface 29 has plural projection parts 33, 34 which project from the adjustment surface 29 in a mutually separated state. The plural projection parts 33, 34 are arranged in a vertical direction which is a direction crossing a flow direction before the air A for the air-conditioning passes an upstream end 24 of the upstream fin body 23 in the flow direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an air conditioning register that adjusts the flow state such as the direction of air conditioning air that is sent from an air conditioner and blown out into a vehicle compartment.

  For example, an air conditioning register for blowing out the air for air conditioning sent from the air conditioner is incorporated in an instrument panel of a vehicle. As one form of this air conditioning register, for example, Patent Document 1 describes one having a retainer and an air flow adjusting unit. The retainer has a cylindrical shape and has a ventilation path for air conditioning air. The downstream end of the air passage constitutes an outlet. The air flow adjusting unit has a plate-like portion provided on the retainer. The air flow adjusting unit adjusts the flow state of the air for air conditioning by causing the air for air conditioning to flow along the adjustment surfaces on both sides in the thickness direction of the plate-like portion. As an air flow adjustment part, a fin, a shut damper, etc. are mentioned.

  The fin is provided with a fin main body which is disposed in the air passage and constitutes the plate-like portion, and a fin shaft which protrudes from the fin main body and is supported by the retainer. By tilting the fin with the fin axis as a fulcrum, the direction of the air conditioning air blown out from the outlet is adjusted.

  The shut damper includes a damper main body which is disposed upstream of the fins of the air passage and constitutes the plate-like portion, and a damper shaft which protrudes from the damper main body and is supported by the retainer. The shut damper is tilted between the open position and the closed position with the damper axis as a fulcrum. In the open position, the damper main body is in a state along the flow direction of the air conditioning air to open the air passage. In the closed position, the damper body inclines with respect to the flow direction of the air conditioning air to close the air passage. By this closing, the blowout of the air conditioning air from the blowout port is blocked.

JP 2007-331417 A

  By the way, when passing through the air flow adjustment unit, the air for air conditioning hits the upstream end of the plate-like portion, and is divided into two air flow portions in the thickness direction. Both air flows flow from the upstream toward the downstream along the two adjustment surfaces of the plate-like part. And both air flow parts merge after passing the downstream end of a plate-like part.

  However, the two air flow portions separate from the plate-like portion when flowing along the two adjustment surfaces of the plate-like portion. Due to this separation, an area in which the air for air conditioning does not flow is formed between each air flow portion and the plate-like portion, a pressure difference is generated, and noise may be generated.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an air conditioning register capable of suppressing the generation of noise when the air flow adjusting portion of the air conditioning air passes through. is there.

  The air-conditioning register for solving the above problems has a cylindrical retainer having a ventilation path for air-conditioning air, and a plate-like portion, and the air-conditioning air flows on both sides in the thickness direction of the plate-like portion. An air conditioning register including an air flow adjusting unit having an adjusting surface for adjusting a state, wherein an eddy current generating design portion is formed on each adjusting surface of the plate-like portion, and each eddy current generating design portion It has a plurality of projections projecting from the adjustment surface in a separated state, and the plurality of projections are the same flow direction before the air conditioning air passes the upstream end of the plate-like portion in the flow direction It is arranged along the direction that intersects the.

  When the air conditioning air passes through the air flow control unit, it hits the upstream end of the plate-like portion, and is separated into two air flow portions in the thickness direction. The two air flow portions flow from upstream to downstream along the adjustment surfaces on both sides in the thickness direction of the plate-like portion. Under the present circumstances, each airflow part tends to exfoliate from a plate-like part.

  In this respect, as in the above-described configuration, the swirling flow generating pattern portion is formed on each of the adjustment surfaces of the plate-like portion, whereby the air flow portion passes through the plurality of protrusions while flowing along the adjustment surface. When passing through the protrusions, the air flow portion passes over the protrusions or passes through a gap between the adjacent protrusions. During this passage, small vortices are generated downstream of the respective projections, and the Coanda effect of the vortices causes the respective air flow portions to be attracted toward the plate-like portion. The phenomenon that the air flow part peels off from the plate-like part is suppressed. Unlike the case where the air flow part peels off, a region where the air conditioning air does not flow is less likely to occur between the air flow portions and the adjustment surface, and the generation of noise due to the pressure difference in the same region is suppressed.

The two air flow portions merge after passing through the downstream end of the plate-like portion.
In the air conditioning register, each protrusion preferably extends in a direction inclined with respect to the flow direction before passing through the upstream end of the plate-like portion and the arrangement direction of the protrusions.

  According to the above configuration, a part of each air flow portion is led to the gap between the adjacent protrusions by flowing along the protrusions extending in the direction inclined with respect to the flow direction and the arrangement direction of the protrusions. , Through the gap. That is, part of the air flow portion can change the flow direction before passing through the gap between the adjacent protrusions. Therefore, it is possible to efficiently generate small vortices that attract the air flow portions to the side closer to the plate-like portion, as compared with the case where the air conditioning air passes through the gap without changing the flow direction.

In the air conditioning register, preferably, the adjacent protrusions extend in directions opposite to each other.
According to the above configuration, the pair of adjacent protrusions extend in the directions opposite to each other, so the air flow part flows in the directions opposite to each other along the protrusions. Therefore, it becomes possible to efficiently generate small vortices that attract each air flow portion to the side closer to the plate-like portion as compared with the case where the pair of adjacent protruding portions extend in the same tendency direction.

  In the air-conditioning register, the air flow adjusting unit is constituted by a fin which adjusts the flow direction as the flow state of the air-conditioning air, and the fin is arranged in the middle of the ventilation path to constitute the plate-like portion It is preferable that the fin main body and the fin axis which protrudes from the fin main body in the direction crossing the flow direction be supported by the retainer so as to be able to tilt on the fin axis.

According to the above configuration, when the air conditioning air passes through the fins, it is separated into two air flow portions and flows along the adjustment surfaces on both sides in the thickness direction of the fin main body.
On the other hand, the fin can be tilted about the fin axis. By this tilting, when both adjustment surfaces of the fin main body are inclined with respect to the flow direction of the air conditioning air before passing through the fins, each air flow portion flows by flowing along the adjustment surface of the fin main body You can change the direction.

  On the other hand, when both adjustment surfaces of the fin main body are not inclined with respect to the flow direction of the air conditioning air before passing through the fins, the respective air flow portions mentioned above when passing through the eddy current generation pattern portion As a result, small vortices are generated downstream of the protrusions, and the air flow portions are attracted toward the plate-like portion. Therefore, the generation of noise caused by the air flow portion peeling from the plate-like portion is suppressed.

  In the air conditioning register, in the fin main body, an area between the upstream end and the intermediate part in the flow direction is an upstream part of the fin main body, and an area between the intermediate part and the downstream end is In the downstream portion of the fin main body, the thickness of the fin main body increases as it approaches the intermediate portion at the upstream portion, and decreases as it gets farther from the intermediate portion at the downstream portion, and the eddy current generation pattern portion Preferably, it is formed at a location adjacent to the location where the thickness is maximum.

  According to the above configuration, the two air flow portions separated at the upstream end of the plate-like portion flow in the upstream portion of the plate-like portion such that the distance between the two air flow portions increases toward the downstream side. In the downstream portion of the plate-like portion, the two air flow portions flow such that the distance between them is narrowed toward the downstream side. When moving from the upstream part of the plate-like part to the downstream part through the middle part, that is, when changing the direction of the flow from the direction in which the distance between them widens to the direction in which the distance narrows, Try to peel off.

  However, as described above, when each air flow portion passes the eddy current generation pattern portion, a small eddy current is generated downstream of each protrusion, and each air flow portion is attracted toward the plate-like portion. Therefore, the generation of noise caused by the air flow portion peeling from the plate-like portion is suppressed.

  In the air conditioning register, the vortex flow generation design portion in each adjustment surface is a portion adjacent to the upstream side in the flow direction and a portion adjacent to the downstream side with respect to the portion where the thickness of the plate-like portion is maximum. It is preferable that each is formed.

  As in the above-described configuration, the vortex flow generation pattern portion is formed on the upstream side and the downstream side in the flow direction across the location where the thickness of the plate-like portion is maximum for each adjustment surface. Pass through the two swirling patterns while flowing along the adjustment surface. That is, when it is going to separate from the plate-like part, the air flow part passes the vortex flow generation design part twice. When passing through each protrusion of each vortex flow generation pattern portion, the air flow portion passes over the same protrusion or passes through a gap between adjacent protrusions. During this passage, small vortices are generated downstream of each projection. Therefore, as compared with the case where one vortex flow generation design portion is formed for each adjustment surface, it is possible to efficiently generate a small vortex flow that sucks the air flow portion toward the plate-like portion.

  In the air-conditioning register, a state in which the gap between the adjacent protruding portions is shifted in the arrangement direction of the protruding portions between the eddy current generating design portion on the upstream side and the eddy current generating design portion on the downstream side in the flow direction. It is preferable to be formed of

  According to the above configuration, the air flow portion passes along the gap between the adjacent protrusions in the swirl generation pattern portion on the upstream side while flowing along the adjustment surface. During this passage, small vortices are generated downstream of each projection.

  The air flow portion which has passed through the swirling flow generating design portion on the upstream side, when passing through the swirling flow generating design portion on the downstream side, hits the projection and can change the flow direction. This is because the gap between the adjacent protrusions in the upstream vortex flow pattern and the gap between the adjacent protrusions in the downstream flow vortex are shifted in the arrangement direction of the protrusions. is there. Then, the air flow unit whose flow direction is changed flows in the gap with the adjacent protrusion.

  Therefore, the gap between the adjacent protrusions in the upstream vortex flow pattern and the gap between the adjacent protrusions in the downstream flow vortex do not shift, and the air flow can not change the flow direction. It becomes possible to generate efficiently small vortices which attract each air flow portion to the side closer to the plate-like portion as compared with those which pass through the gap.

  According to the air conditioning register, it is possible to suppress the generation of noise when the air flow adjustment portion of the air for air conditioning passes.

BRIEF DESCRIPTION OF THE DRAWINGS The plane sectional view which shows the internal structure of the register | resistor for air conditioning in one Embodiment. The side sectional view showing the internal structure of the register for air conditioning in one embodiment. (A) is a side view of the upstream fin in one embodiment, (b) is a fragmentary side view expanding and showing a part of Drawing 3 (a). Sectional drawing in alignment with line 4-4 in FIG.3 (b). The partial side view which expands and shows a part of eddy current generation | occurrence | production pattern part in Fig.3 (a). (A) is a plan sectional view showing the relationship between the upstream fin and the air flow portion in the embodiment in which the eddy current generation design portion is formed, (b) is the upstream fin and the air flow portion in the comparative example where the eddy flow generation design portion is not formed FIG. The partial plane sectional view which shows the modification in which the eddy current generation pattern part was formed in the straightening vane.

Hereinafter, one embodiment embodied in the air-conditioning register for vehicles is described with reference to FIGS.
In the following description, the traveling direction (forward direction) of the vehicle is referred to as the front, the reverse direction as the rear, and the height direction as the vertical direction. Further, in the vehicle width direction (left and right direction), the direction is defined based on the case where the vehicle is viewed from the rear.

In the passenger compartment, an instrument panel is provided in front of the front seat (driver's seat and front passenger seat) of the vehicle, and an air conditioning register is incorporated in the center and both sides in the vehicle width direction.
As shown in FIGS. 1 and 2, the air conditioning register includes a retainer 10, a plurality of fins, a shut damper 40, a damper drive mechanism 45, an operation knob 48, and a transmission mechanism B1. Among these, the fins and the shut damper 40 have a plate-like portion, and an air flow adjusting portion in which an adjusting surface for adjusting the flow state of the air for air conditioning is formed on both sides in the thickness direction of the plate-like portion. Equivalent to. Next, each part constituting the air conditioning register will be described.

<Retainer 10>
The retainer 10 is composed of a plurality of members formed of a hard resin material, and has a tubular shape with both ends open as a whole. The internal space of the retainer 10 constitutes a flow path (hereinafter referred to as the “air flow path 11”) of the air for air conditioning A sent from the air conditioning apparatus (not shown) through the air flow duct. Here, regarding the flow direction of the air conditioning air A in the ventilation path 11, the side closer to the air conditioner (left side in FIGS. 1 and 2) is the upstream side, and the side far from the air conditioner (right side in FIGS. 1 and 2) ) Is the downstream side. The downstream end of the air passage 11 constitutes an outlet 12 of the air for air conditioning A.

  The air passage 11 is surrounded by the four walls of the retainer 10. These four wall portions are composed of a pair of vertical wall portions 13 facing each other in the vehicle width direction and a pair of horizontal wall portions 14 facing each other in the vertical direction.

<Fin>
The fins are for adjusting the flow direction as the flow state of the air conditioning air A, and include a plurality of downstream fins 15 and a plurality of upstream fins 21.

  Each downstream fin 15 comprises a downstream fin body 16 and a pair of downstream fin shafts 17. The downstream fin main body 16 and the both downstream fin shafts 17 extend in the vehicle width direction which is a direction intersecting the flow direction of the air conditioning air A. The plurality of downstream fins 15 are disposed in the vicinity of the upstream of the air outlet 12 in the air passage 11 so as to be separated from each other in the vertical direction.

  Both downstream fin shafts 17 protrude from both end faces in the vehicle width direction of each downstream fin main body 16 in a direction away from each other. Each of the downstream fins 15 is tiltably supported by both the vertical wall portions 13 at both of the downstream fin shafts 17.

  In each downstream fin main body 16, a connecting shaft 18 is provided in parallel to the downstream fin shaft 17 at a position biased upstream from one downstream fin shaft 17 (upper side in FIG. 1). The connecting shaft 18 of each downstream fin 15 is connected by a long connecting rod 19 extending substantially in the vertical direction. A parallel link mechanism LM1 configured to tilt all the downstream fins 15 in a synchronized state is configured by the downstream fin main body 16, the downstream fin shaft 17, the connecting shaft 18, the connecting rod 19 and the like.

  Each upstream fin 21 includes an upstream fin main body 23 as a plate-like portion and a pair of upstream fin shafts 36. In FIG. 1, each upstream fin shaft 36 is illustrated by a dot (·). As shown in FIG. 1 and FIG. 2, the upstream fin main body 23 and both upstream fin shafts 36 are respectively in the vertical direction which is a direction intersecting the flow direction of the air for air conditioning A and the extending direction of the downstream fin shaft 17 It extends. The upstream fin main bodies 23 are disposed upstream of the downstream fins 15 of the air passage 11 so as to be separated from each other in the vehicle width direction.

  Both upstream fin shafts 36 project from the upper and lower end faces of each upstream fin 21 in a direction away from each other. Each of the upstream fins 21 is tiltably supported by the lateral wall portions 14 at both of the upstream fin shafts 36.

  A connection shaft 37 is provided in parallel to the upstream fin shaft 36 at a location biased upstream from one of the upstream fin shafts 36 (upper side in FIG. 2) in each upstream fin main body 23. The connecting shaft 37 of each upstream fin 21 is connected by a long connecting rod 38 extending in the vehicle width direction. The upstream link main body 23, the upstream fin shaft 36, the connecting shaft 37, the connecting rod 38 and the like constitute a parallel link mechanism LM2 for tilting all the upstream fins 21 in a synchronized state.

<Shut damper 40>
The shut damper 40 adjusts the flow state of the air conditioning air A by allowing or blocking the flow of the air conditioning air A, and the damper main body 41, the seal portion 42, and the pair of damper shafts 43 Have. The damper main body 41 is disposed upstream of the upstream fin 21 of the air passage 11. The seal portion 42 is formed of a soft material, for example, a soft foam such as a sponge, and is mounted around the damper main body 41. The outer peripheral edge portion of the seal portion 42 is exposed to the outer side than the outer peripheral edge portion of the damper main body 41. The damper shafts 43 project from both end surfaces in the vertical direction of the damper main body 41 in the direction away from each other. This direction is a direction intersecting the flow direction of the air conditioning air A. In FIG. 1, the damper shaft 43 is illustrated by dots (·).

  The shut damper 40 is supported by the lateral wall portion 14 of the retainer 10 at both damper shafts 43, and can be tilted between the open position and the closed position. In the open position, the shut damper 40 is substantially parallel to the vertical wall portions 13 of the retainer 10 as shown by solid lines in FIG. In the closed position, the shut damper 40 inclines with respect to both the vertical wall portions 13 as shown by a two-dot chain line in FIG. 1 and contacts the both lateral wall portions 14 and both vertical wall portions 13 of the retainer 10 in each seal portion 42 And the air passage 11 is closed.

<Damper drive mechanism 45>
As shown in FIG. 2, the damper drive mechanism 45 is a mechanism for tilting the shut damper 40 to open and close the air passage 11, and includes an operation dial 46 and a rotation transmission unit 47. The operation dial 46 is disposed in the vicinity of the lower side of the air outlet 12 and is rotatably supported by the retainer 10.

  The rotation transmission unit 47 is for transmitting the rotation of the operation dial 46 to the shut damper 40. The rotation transmission unit 47 is configured by a link mechanism, a gear mechanism, and the like, and is provided between the operation dial 46 and the damper shaft 43 of the shut damper 40.

<Operation knob 48>
As shown in FIG. 1 and FIG. 2, the operation knob 48 is a member operated by the occupant when changing the blowing direction of the air conditioning air A from the outlet 12. The operation knob 48 is mounted slidably in the vehicle width direction with respect to the downstream fin main body 16 of the downstream fin 15 at the central portion in the vertical direction. The operation knob 48 can be tilted with the downstream fin 15 at the central portion with the downstream fin shaft 17 as a fulcrum, and can be displaced in the vehicle width direction by sliding on the downstream fin main body 16 at the central portion is there.

<Transmission mechanism B1>
The transmission mechanism B1 is a mechanism for transmitting the sliding motion of the operation knob 48 to a specific upstream fin 21 near the center in the vehicle width direction, and tilting the upstream fin 21 with both upstream fin shafts 36 as a fulcrum. .

  Unlike the upstream fin main body 23 (see FIG. 3A) of the other upstream fin 21, a notch 51 is formed in the upstream fin main body 23 of the specific upstream fin 21. The notch 51 is for avoiding interference with the fork 49 described later when the upstream fin 21 is tilted. Further, at the downstream end of the notch 51, a transmission shaft 52 extending in the vertical direction along the two upstream fin shafts 36 is provided.

  A fork 49 is connected to the operation knob 48. The fork 49 has a pair of transmission pieces 49 a extending upstream of the operation knob 48 while being spaced apart from each other in the direction in which the two downstream fin shafts 17 extend. The distance between the two transmission pieces 49 a is set to be slightly larger than the thickness (diameter) of the transmission shaft 52. The two transmission pieces 49a sandwich the transmission shaft 52 from both sides in the vehicle width direction.

In addition to the basic configuration of the air conditioning register described above, in the present embodiment, an eddy current generation pattern portion 32 is formed in each upstream fin 21.
More specifically, as shown in FIG. 3A, the upstream fin shaft 36 for each upstream fin 21 is located at the intermediate portion 25 of the upstream fin main body 23 in the flow direction of the air conditioning air A in the upstream fin main body 23 ing.

  Here, in each upstream fin main body 23, the region between the upstream end portion 24 and the intermediate portion 25 in the flow direction is the upstream portion 27 of the upstream fin main body 23, and between the intermediate portion 25 and the downstream end portion 26. Is the downstream portion 28 of the upstream fin main body 23. As shown to Fig.6 (a), thickness T1 of the upstream fin main body 23 becomes the largest in the location 31 in which the upstream fin axis | shaft 36 was provided in the said flow direction. The thickness T <b> 1 increases as the upstream portion 27 approaches the middle portion 25, and decreases as the downstream portion 28 moves away from the middle portion 25.

The surfaces on both sides in the thickness direction of each upstream fin main body 23 constitute an adjustment surface 29 for adjusting the flow direction of the air for air conditioning A.
An eddy current generation pattern portion 32 is formed on each of the adjustment surfaces 29 adjacent to the portion 31 where the thickness T1 of the upstream fin main body 23 is maximum. In the present embodiment, the eddy current generation pattern portion 32 for each adjustment surface 29 is on both sides in the flow direction, that is, on the upstream side and the downstream side of the portion 31 across the portion 31 and adjacent to the portion 31 It is formed in the place.

  As shown in FIGS. 3 (a) and 3 (b), each of the vortex flow generation pattern portions 32 has a plurality of projections 33 and 34 which project from the adjustment surface 29 in a state of being separated from each other. As shown in FIG. 4, the protrusion height H1 of each of the protrusions 33 and 34 from the adjustment surface 29 is preferably 0.1 mm to 0.5 mm, and more preferably 0.3 mm to 0.5 mm. preferable. When the projection height H1 is set to a value in this range, it is possible to preferably suppress the generation of noise when the air conditioning air A passes through the upstream fin. In addition, when the protrusion height H1 is set excessively, the sound resulting from the protrusions 33 and 34 is generated.

  As shown to FIG. 3 (a), (b), several protrusion parts 33 and 34 for every eddy current generation | occurrence | production pattern part 32 are arranged along the up-down direction. This direction is a direction intersecting the same flow direction before the air conditioning air A passes the upstream end 24 of the upstream fin main body 23 in the flow direction.

  The protrusions 33 and 34 extend in a direction inclined with respect to the flow direction and the arrangement direction of the protrusions 33 and 34 before passing through the upstream end 24 of the upstream fin main body 23. Further, the adjacent protrusions 33 and 34 extend in directions opposite to each other. In the present embodiment, each protrusion 33 is formed to be higher toward the downstream side, and each protrusion 34 is formed to be lower toward the downstream side. It is preferable that length L1 which is a dimension of the extension direction of each projection part 33 and 34 is 2.0 mm-5.0 mm. It is preferable that angle (theta) 1 which the adjacent projection parts 33 and 34 make is 80 degrees-100 degrees. It is preferable that the space | interval D1 of the adjacent projection parts 33 and 34 is 0.7 mm-1.3 mm.

  As shown in FIG. 5, the swirl generation pattern portion 32 on the upstream side in the flow direction and the swirl generation pattern portion 32 on the downstream side in the flow direction define the gap 35 between the adjacent protrusion portions 33 and 34 as the protrusion portions 33 and 34. It is formed in the state which shifted to the up-down direction which is the arrangement direction of.

The air conditioning register of the present embodiment is configured as described above. Next, the operation of the air conditioning register will be described.
As shown by a two-dot chain line in FIG. 1, when the shut damper 40 is in the closed position, the air passage 11 is closed by the shut damper 40. The flow of the air conditioning air A downstream of the shut damper 40 is shut off, and the blowing of the air conditioning air A from the outlet 12 is stopped. At this time, the seal portion 42 comes in contact with both the vertical wall portions 13 to seal between the shut damper 40 and each vertical wall portion 13.

  On the other hand, as shown by the solid line in FIG. 1, when the shut damper 40 is in the open position, each air passage 11 is fully opened, and the air conditioning air A is divided on both sides in the vehicle width direction with the shut damper 40 as a boundary. Flow. The air conditioning air A having passed through the shut damper 40 flows along the upstream fin 21 and the downstream fin 15 and then blows out from the air outlet 12.

  The switching of the shut damper 40 from the closed position to the open position and the switching from the open position to the closed position are performed through the turning operation of the operation dial 46 shown in FIG. When the control dial 46 is rotated by the occupant, the rotation is transmitted to the shut damper 40 via the rotation transmission unit 47, and the shut damper 40 is tilted.

  As shown in FIGS. 1 and 2, when the operation knob 48 slides on the downstream fin main body 16 in the vehicle width direction when each shut damper 40 is in the open position, the movement of the operation knob 48 is a fork It is transmitted to the above-mentioned specific upstream fin 21 through 49 and the transmission shaft 52. This particular upstream fin 21 is tilted in the same direction (vehicle width direction) as the sliding direction of the operation knob 48 with both upstream fin shafts 36 as a fulcrum. The tilt of the specific upstream fin 21 is transmitted to the remaining upstream fins 21 via the parallel link mechanism LM2. As a result, in conjunction with the specific upstream fin 21, the remaining upstream fins 21 are tilted in the same direction as the specific upstream fin 21 with both upstream fin shafts 36 as a fulcrum.

  On the other hand, when each shut damper 40 is in the open position, when a force directed to the thickness direction is applied to the operation knob 48, the force is transmitted to the downstream fin 15 provided with the operation knob 48. Ru. The downstream fin 15 is tilted with the downstream fin shaft 17 as a fulcrum. The tilting of the downstream fin 15 is transmitted to the remaining downstream fins 15 via the parallel link mechanism LM1. As a result, in conjunction with the operated downstream fin 15, the remaining downstream fins 15 are tilted in the same direction as the operated downstream fin 15 with the downstream fin shaft 17 as a fulcrum. At this time, the movement of the fork 49 is not transmitted to the transmission shaft 52, and the upstream fin 21 is not tilted.

  When both adjustment surfaces 29 of each upstream fin main body 23 are inclined with respect to the flow direction of the air for air conditioning A before passing through the upstream end 24 of the upstream fin main body 23, the air for air conditioning A is both The flow direction can be changed by flowing along the adjustment surface 29. On the other hand, when both adjustment surfaces 29 are not inclined with respect to the flow direction of the air conditioning air A before passing through the upstream end portion 24, the air conditioning air A flows when passing through the upstream fin main body 23 I can hardly change the direction.

The downstream fins 15 are also similar to the upstream fins 21. Then, the air for air conditioning A having passed through the upstream fins 21 and the downstream fins 15 is blown out from the air outlet 12.
As shown in FIGS. 6 (a) and 6 (b), when both adjustment surfaces 29 of the upstream fin main body 23 are not inclined with respect to the flow direction of the air conditioning air A before passing through the upstream end portion 24. When the air-conditioning air A passes through the upstream fins 21, the air-conditioning air A strikes the upstream end 24 of the upstream fin main body 23, and is separated into two air flow portions A1 in the thickness direction.

  The two air flow portions A1 flow from the upstream toward the downstream along the adjustment surfaces 29 on both sides in the thickness direction of the upstream fin main body 23. In the upstream portion 27 of the upstream fin main body 23, the two air flow portions A1 flow such that the distance between the two air flow portions A1 increases toward the downstream side. In the downstream portion 28 of the upstream fin main body 23, the two air flow portions A1 flow such that the distance between them is narrowed. Then, both the air flow portions A1 join after passing through the downstream end portion 26 of the upstream fin main body 23.

  Here, as shown in FIG. 6 (b), if the swirling flow generation pattern portion 32 is not formed on each adjustment surface 29, both the air flow portions A 1 start the middle portion 25 from the upstream portion 27 of the upstream fin main body 23. When moving to the downstream portion 28, that is, when changing the direction of the flow from the direction in which the distance between them widens to the direction in which the distance becomes narrow, it tries to separate from the upstream fin main body 23. Due to this separation, a zone Z1 in which the air for air conditioning A does not flow is formed between each air flow portion A1 and the upstream fin main body 23, a pressure difference is generated, and noise may occur.

  In this respect, in the present embodiment in which the eddy current generation pattern portion 32 is formed on each adjustment surface 29, as shown in FIG. 6A, the air flow portion A1 flows along the adjustment surface 29 and a plurality of projections 33 , 34 pass. When passing through the protrusions 33 and 34, the air flow part A1 passes over the protrusions 33 and 34 or passes through the gap 35 between the adjacent protrusions 33 and 34. During this passage, a small eddy current V1 is generated downstream of each of the protrusions 33 and 34.

  In particular, in the present embodiment, as shown in FIG. 5, a portion of each air flow portion A1 extends in a direction inclined with respect to the flow direction and the vertical direction which is the arrangement direction of the protrusions 33, 34. The flow is guided to the gap 35 between the adjacent projections 33 and 34 and passes through the gap 35. That is, a part of air flow part A1 can change the flow direction, before passing through crevice 35 between adjoining projection parts 33 and 34. Therefore, it is possible to efficiently generate a small eddy current V1 for attracting each air flow portion A1 to the side closer to the upstream fin main body 23, compared with the case where the air flow portion A1 passes through the gap 35 without changing the flow direction. Become.

  Further, since the pair of adjacent projections 33 and 34 extend in the directions opposite to each other, the air flow portion A1 flows in the directions opposite to each other along the projections 33 and 34. Therefore, it is possible to efficiently generate a small eddy current V1 for attracting each air flow portion A1 closer to the upstream fin main body 23, as compared with the case where the adjacent pair of projections 33 and 34 extend in the same tendency direction. It becomes.

  Furthermore, in the present embodiment, the eddy current generation pattern portion 32 is formed on each of the adjustment surfaces 29 on the upstream side and the downstream side in the flow direction across the portion 31 where the thickness of the upstream fin main body 23 is maximum. From this, the air for air conditioning A passes through the two vortex flow generation pattern portions 32 while flowing along the respective adjustment surfaces 29. That is, when it is going to separate from the upstream fin main body 23, both airflow parts A1 pass the eddy current generation | occurrence | production pattern part 32 twice. The airflow portion A1 passes over the protrusions 33 and 34 when passing through the protrusions 33 and 34 for each eddy current generation pattern portion 32, or passes through the gap 35 between the adjacent protrusions 33 and 34. Do. During this passage, a small eddy current V1 is generated downstream of each of the protrusions 33 and 34. Therefore, compared with the case where one vortex flow generation pattern portion 32 is formed for each adjustment surface 29, it is possible to efficiently generate a small vortex flow V1 for attracting the air flow portion A1 to the side closer to the upstream fin main body 23. .

  While flowing along the adjustment surface 29, each air flow portion A1 passes through the gap 35 between the adjacent protruding portions 33 and 34 in the vortex generation pattern portion 32 on the upstream side. During this passage, a small eddy current V1 is generated downstream of each of the protrusions 33 and 34.

  The air flow portion A1 which has passed through the vortex flow generation design portion 32 on the upstream side can hit the protrusions 33 and 34 and change the flow direction when passing the vortex flow generation design portion 32 on the downstream side. This is because the gap 35 in the upstream vortex flow pattern portion 32 and the gap 35 in the downstream vortex flow pattern portion 32 are shifted in the vertical direction, which is the direction in which the protrusions 33 and 34 are arranged. . The air flow portion A1 whose flow direction has been changed flows in the gap 35.

  Therefore, the gap 35 in the upstream vortex flow pattern portion 32 and the gap 35 in the downstream vortex flow pattern portion 32 do not shift, and the air flow portion A1 passes the gap 35 without changing the flow direction. It becomes possible to generate efficiently small eddy current V1 which attracts each airflow part A1 to the side which approaches upstream fin main part 23 compared with a thing.

  Then, when the small eddy current V1 is generated as described above, as shown in FIG. 6A, each air flow portion A1 is attracted toward the adjustment surface 29 by the Coanda effect of the eddy current V1. The phenomenon that the air flow part A1 peels off from the upstream fin main body 23 is suppressed. Unlike the case where the air flow part A1 peels off (refer to FIG. 6B), the area Z1 in which the air for air conditioning A does not flow is less likely to occur between each air flow part A1 and the upstream fin main body 23. Even if the area Z1 is generated, it is smaller than that shown in FIG. As a result, it is possible to suppress the generation of noise due to the pressure difference in the same area Z1.

According to the present embodiment, the following effects can be obtained in addition to the above.
The vortex flow generation pattern portion 32 is formed on the upstream fin 21. A downstream fin 15 is disposed downstream of the upstream fin 21. Therefore, the eddy current generation pattern portion 32 is less visible from the downstream side of the air conditioning register than when the eddy current generation design portion 32 is formed on the downstream fin 15, and the appearance is reduced due to the eddy current generation design portion 32 can do.

In addition, the said embodiment can also be implemented as a modification which changed this as follows.
<About the vortex flow generation pattern portion 32>
The target on which the vortex flow generation pattern portion 32 is formed may be changed to an air flow adjustment portion different from the upstream fin 21. In the above embodiment, the downstream fin 15 and the shut damper 40 can be mentioned. In the case of the downstream fin 15, the downstream fin main body 16 constitutes a plate-like portion, the surfaces on both sides in the thickness direction thereof constitute an adjustment surface, and the downstream fin shaft 17 constitutes a fin shaft. An eddy current generation pattern portion 32 is formed on each adjustment surface. In the case of the shut damper 40, the damper main body 41 constitutes a plate-like portion, and the surfaces on both sides in the thickness direction constitute an adjustment surface. An eddy current generation pattern portion 32 is formed on each adjustment surface.

  · In the case of an air conditioning register in which a barrel as an air flow adjusting portion is supported by a shaft so as to be tiltable by a shaft, the barrel is used as an air flow adjusting portion, and both sides (adjustment surfaces) in the thickness direction An eddy current generation pattern portion 32 may be formed.

  As shown in FIG. 7, when the air duct 61 disposed upstream of the air conditioning register is curved, in order to smoothly guide the air conditioning air A flowing in the air duct 61 to the air conditioning register. A flow straightening plate 62 which is curved corresponding to the air duct 61 may be attached to the upstream end of the retainer 10. The eddy current generation pattern portion 32 described above may be formed on both sides (adjustment surface 29) in the thickness direction, with the straightening plate 62 as an air flow adjustment portion. In this case, guiding the air conditioning air A flowing in the air duct 61 to the air conditioning register corresponds to adjusting the flow state of the air conditioning air A for the rectifying plate 62.

The number of swirling patterns 32 formed for each adjustment surface 29 may be changed to one or three or more.
-In each adjustment surface 29, the eddy current generation | occurrence | production pattern part 32 may be formed in the location different from the said embodiment.

  -The vortex flow generation pattern portion 32 on the upstream side and the vortex flow generation pattern portion 32 on the downstream side are formed in a state in which the gap 35 between the adjacent projection portions 33 and 34 matches the arrangement direction of the projection portions 33 and 34 It may be done.

-Each vortex generation | occurrence | production pattern part 32 may be comprised by only the projection part 33 or only the projection part 34. FIG.
-The protrusions 33 and 34 which comprise each eddy current generation pattern part 32 may be changed into the shape different from the said embodiment.

<About the fin>
-One of the upstream fin 21 and the downstream fin 15 may be omitted. In this case, the eddy current generation pattern portion 32 may be formed on the adjustment surface of the remaining fin. In addition, other fins may be added to the upstream fins 21 and the downstream fins 15.

<About the shut damper 40>
-As the shut damper 40, although the thing by which the damper main body 41 was comprised by the single member like the said embodiment may be used, what was comprised by the several member may be used. In the latter case, the damper body may be provided with a pair of damper plates which are tilted in opposite directions between the open position and the closed position with the damper axis on the same line as a fulcrum. In this case, the surfaces on both sides in the thickness direction of each damper plate are used as adjustment surfaces, and an eddy current generation pattern portion is formed here.

The shut damper 40 may be omitted.
<About application part>
The air conditioning register is also applicable to an air conditioning register incorporated in the dashboard in a different place from the instrument panel in the vehicle compartment.

  The air conditioning register is widely applicable not only to vehicles, but also to an air flow adjustment unit for adjusting the flow state of the air conditioning air A.

  DESCRIPTION OF SYMBOLS 10 ... Retainer, 11 ... Ventilation path, 15 ... Downstream fin (air flow adjustment part, fin) 16, ... Downstream fin main body (plate-like part, fin main body), 17 ... Downstream fin axis (fin axis), 21 ... Upstream fin (Air flow adjusting portion, fin), 23: Upstream fin main body (plate-like portion, fin main body), 24: upstream end, 25: intermediate portion, 26: downstream end, 27: upstream portion, 28: downstream portion, 29: Adjustment surface, 31: location, 32: eddy current generation pattern, 33, 34: projection, 35: gap, 36: upstream fin shaft (fin shaft), 40: shut damper (air flow adjustment portion), 41: Damper main body (plate-like portion), 62: straightening plate (air flow adjusting portion), A: air conditioning air, T1: thickness.

Claims (7)

A cylindrical retainer having a ventilation path for air conditioning air;
An air conditioning register comprising: a plate-like portion; and an air flow adjusting portion having an adjusting surface for adjusting a flow state of the air conditioning air formed on both sides in the thickness direction of the plate-like portion.
An eddy current generation pattern portion is formed on each adjustment surface of the plate-like portion,
Each eddy current generation pattern portion has a plurality of protrusions which project from the adjustment surface in a state of being separated from each other,
The air conditioning register in which the plurality of projections are arranged along a direction intersecting the same flow direction before the air conditioning air passes through the upstream end of the plate-like portion in the flow direction.   The air conditioning register according to claim 1, wherein each projection extends in a direction inclined with respect to the flow direction before passing through the upstream end of the plate-like portion and the arrangement direction of the projections.   The air conditioning register according to claim 2, wherein the adjacent protrusions extend in directions opposite to each other. The air flow adjustment unit is configured of fins that adjust the flow direction as the flow state of the air conditioning air,
The fin includes a fin main body which is disposed in the middle of the air passage and constitutes the plate-like portion, and a fin shaft which protrudes from the fin main body in a direction intersecting the flow direction.
The air-conditioning register according to any one of claims 1 to 3, wherein the fin is tiltably supported by the retainer at the fin shaft. In the fin main body, a region between the upstream end and the middle in the flow direction is the upstream of the fin main, and a region between the middle and the downstream end is the downstream of the fin main if you did this,
The thickness of the fin main body increases as it approaches the middle part at the upstream part, and decreases as it goes away from the middle part at the downstream part,
The air conditioning register according to claim 4, wherein the eddy current generation pattern portion is formed at a position adjacent to the position where the thickness is maximum.   The vortex flow generation design portion in each adjustment surface is formed at a location adjacent to the upstream side in the flow direction and a location adjacent to the downstream side with respect to the location where the thickness of the plate-like portion is maximum. The air conditioning register according to claim 5.   It is preferable that the space between the adjacent projections be shifted in the arrangement direction of the projections from the eddy current generation design on the upstream side and the eddy current generation design on the downstream side in the flow direction. The air conditioning register according to Item 6.