JP6817177B2 - Air conditioning register - Google Patents

Description

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

For example, the instrument panel of a vehicle incorporates an air conditioning register that blows out air conditioning air sent from an air conditioner. As one form of the air conditioning register, for example, Patent Document 1 describes a register including a retainer and an air flow adjusting unit. The retainer has a tubular shape and has a ventilation path for air conditioning air. The downstream end of the ventilation path constitutes an outlet. The air flow adjusting portion has a plate-shaped portion provided in the retainer. The air flow adjusting unit adjusts the flow state of the air conditioning air by allowing the air conditioning air to flow along the adjusting surfaces on both sides in the thickness direction of the plate-shaped portion. Examples of the air flow adjusting unit include fins and shut dampers.

The fins include a fin body that is arranged in a ventilation passage and constitutes the plate-like portion, and a fin shaft that protrudes from the fin body and is supported by a retainer. By tilting the fins with the fin shaft 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 that is arranged upstream from the fins of the ventilation passage and constitutes the plate-like portion, and a damper shaft that 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 body is in a state along the flow direction of the air conditioning air to open the ventilation path. In the closed position, the damper body tilts with respect to the flow direction of the air conditioning air to close the ventilation passage. This closure shuts off the air conditioning air from the outlet.

Japanese Unexamined Patent Publication No. 2007-331417

By the way, when passing through the air flow adjusting portion, the air conditioning air hits the upstream end portion of the plate-shaped portion and is divided into two air flow portions in the thickness direction. Both airflow portions flow from upstream to downstream along both adjustment surfaces of the plate-shaped portion. Then, the two airflow portions meet after passing through the downstream end portion of the plate-shaped portion.

However, both airflow portions are separated from the plate-shaped portion when flowing along both adjusting surfaces of the plate-shaped portion. Due to this peeling, a region where air conditioning air does not flow is formed between each airflow portion and the plate-shaped 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 of the present invention is to provide an air conditioning register capable of suppressing the generation of noise when passing through an air flow adjusting unit of air conditioning air. is there.

The air-conditioning register that solves the above problems has a tubular retainer having a ventilation path for air-conditioning air and a plate-shaped portion, and the air-conditioning air flows on both sides of the plate-shaped portion in the thickness direction. It is an air-conditioning register provided with an air flow adjusting portion having an adjusting surface for adjusting the state. It has a plurality of protrusions protruding from the adjustment surface in a separated state, and the plurality of protrusions have the same flow direction before the air conditioning air passes through the upstream end portion of the plate-shaped portion in the flow direction. They are arranged along the direction of intersection with.

When the air for air conditioning passes through the air flow adjusting portion, it hits the upstream end portion of the plate-shaped portion and is separated into two airflow portions in the thickness direction. Both airflow portions flow from upstream to downstream along the adjusting surfaces on both sides in the thickness direction of the plate-shaped portion. At this time, each airflow portion tries to separate from the plate-shaped portion.

In this regard, as described above, the vortex generation pattern portion is formed on each adjusting surface of the plate-shaped portion, so that the airflow portion passes through the plurality of protrusions while flowing along the adjusting surface. When the airflow portion passes through each protrusion, it gets over the protrusion or passes through a gap between adjacent protrusions. At the time of this passage, a small vortex is generated downstream of each protrusion, and due to the Coanda effect of the vortex, each airflow portion is sucked toward the side closer to the plate-shaped portion. The phenomenon that the airflow portion separates from the plate-shaped portion is suppressed. Unlike the case where the airflow portion is separated, a region where the air conditioning air does not flow is less likely to occur between each airflow portion and the adjusting surface, and the generation of noise due to the pressure difference in the region is suppressed.

Both airflow portions meet after passing through the downstream end of the plate-shaped portion.
In the air conditioning register, it is preferable that each protrusion extends in a direction inclined with respect to the flow direction before passing through the upstream end portion of the plate-shaped portion and the arrangement direction of the protrusions.

According to the above configuration, a part of each airflow portion flows along the protrusions extending in the direction of inclination with respect to the flow direction and the arrangement direction of the protrusions, and is guided to the gap between the adjacent protrusions. , Pass through that gap. That is, a part of the airflow portion can change the flow direction before passing through the gap between the adjacent protrusions. Therefore, it is possible to efficiently generate a small vortex that sucks each airflow portion toward the plate-shaped portion, as compared with the air conditioning air that passes through the gap without changing the flow direction.

In the air conditioning register, it is preferable that the adjacent protrusions extend in directions opposite to each other.
According to the above configuration, since the pair of adjacent protrusions extend in directions opposite to each other, the airflow portion flows along the protrusions in directions opposite to each other. Therefore, it is possible to efficiently generate a small vortex that sucks each airflow portion toward the plate-like portion, as compared with the case where the pair of adjacent protrusions extend in the same direction.

In the air conditioning register, the air flow adjusting portion is composed of fins that adjust the flow direction as the flow state of the air conditioning air, and the fins are arranged in the middle of the ventilation passage to form the plate-shaped portion. It is preferable that the fin body is provided with a fin body and a fin shaft projecting from the fin body in a direction intersecting the flow direction, and the fin is slidably supported by the retainer on the fin shaft.

According to the above configuration, when the air conditioning air passes through the fins, it is separated into two airflow portions and flows along the adjusting surfaces on both sides in the thickness direction of the fin body.
On the other hand, the fin can be tilted with the fin axis as a fulcrum. Due to this tilt, when both adjusting surfaces of the fin body are inclined with respect to the flow direction of the air conditioning air before passing through the fins, each airflow portion flows along the adjusting surfaces of the fin body. You can change the direction.

On the other hand, when both adjusting surfaces of the fin body are not inclined with respect to the flow direction of the air conditioning air before passing through the fins, when each airflow portion passes through the vortex generation pattern portion, it is described above. As described above, a small vortex is generated downstream of each protrusion, and each airflow portion is sucked toward the side closer to the plate-shaped portion. Therefore, the generation of noise caused by the airflow portion being separated from the plate-shaped portion is suppressed.

In the air conditioning register, the region of the fin body between the upstream end and the intermediate portion in the flow direction is defined as the upstream portion of the fin body, and the region between the intermediate portion and the downstream end is defined as the region between the fin body and the intermediate portion. In the case of the downstream portion of the fin body, the thickness of the fin body increases as it approaches the intermediate portion in the upstream portion, and decreases as it moves away from the intermediate portion in the downstream portion. , It is preferable that it is formed at a portion adjacent to the portion where the thickness is maximum.

According to the above configuration, the two airflow portions separated at the upstream end of the plate-shaped portion flow so that the distance between the two airflow portions is widened toward the downstream side in the upstream portion of the plate-shaped portion. In the downstream portion of the plate-shaped portion, both airflow portions flow so that the distance between them becomes narrower toward the downstream side. Both airflow portions are transferred from the plate-shaped portion when moving from the upstream portion to the downstream portion via the intermediate portion, that is, when the flow direction is changed from the direction in which the distance between the two airflow portions is widened to the direction in which the same distance is narrowed. Try to peel off.

However, as described above, when each airflow portion passes through the vortex generation pattern portion, a small vortex is generated downstream of each protrusion, and each airflow portion is sucked toward the plate-like portion. Therefore, the generation of noise caused by the airflow portion being separated from the plate-shaped portion is suppressed.

In the air-conditioning register, the vortex generation pattern portion on 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-shaped portion is maximum. It is preferable that each of them is formed.

As described in the above configuration, the vortex generation pattern portion is formed on each of the adjustment surfaces on the upstream side and the downstream side in the flow direction with the portion where the thickness of the plate-shaped portion is maximized, so that each airflow portion is formed. Passes through two vortex generation pattern portions while flowing along the adjustment surface. That is, the airflow portion passes through the vortex generation pattern portion twice when trying to separate from the plate-shaped portion. When the airflow portion passes through each protrusion of each vortex generation pattern portion, the airflow portion gets over the protrusion or passes through a gap between adjacent protrusions. During this passage, a small vortex is generated downstream of each protrusion. Therefore, it is possible to efficiently generate a small vortex that sucks the airflow portion toward the plate-like portion, as compared with the case where one vortex generation pattern portion is formed for each adjustment surface.

In the air-conditioning register, the vortex generation pattern portion on the upstream side in the flow direction and the vortex generation pattern portion on the downstream side are in a state in which the gap between adjacent protrusions is shifted in the arrangement direction of the protrusions. It is preferably formed of.

According to the above configuration, the airflow portion passes through the gap between the adjacent protrusions in the vortex generation pattern portion on the upstream side while flowing along the adjusting surface. During this passage, a small vortex is generated downstream of each protrusion.

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

Therefore, the gap between the adjacent protrusions in the upstream vortex generation pattern portion and the gap between the adjacent protrusions in the downstream vortex generation pattern portion are not displaced, and the airflow portion cannot change the flow direction. Compared to the one that passes through the above gap, it is possible to efficiently generate a small vortex that sucks each airflow portion toward the side closer to the plate-shaped portion.

According to the air-conditioning register, it is possible to suppress the generation of noise when the air-conditioning air passes through the air flow adjusting unit.

FIG. 5 is a plan sectional view showing an internal structure of an air conditioning register according to an embodiment. A side sectional view showing an internal structure of an air conditioning register according to an embodiment. (A) is a side view of the upstream fin in one embodiment, and (b) is a partial side view showing a part of FIG. 3 (a) in an enlarged manner. A cross-sectional view taken along the line 4-4 in FIG. 3 (b). A partial side view showing a part of the vortex generation pattern portion in FIG. 3A in an enlarged manner. (A) is a plan sectional view showing the relationship between the upstream fin and the airflow portion in the embodiment in which the vortex generation pattern portion is formed, and (b) is the upstream fin and the airflow portion in the comparative example in which the vortex generation pattern portion is not formed. A plan sectional view showing the relationship between. A partial plan sectional view showing a modified example in which a vortex generation pattern portion is formed on a straightening vane.

Hereinafter, an embodiment embodied in an air-conditioning register for a vehicle will be described with reference to FIGS. 1 to 6.
In the following description, the traveling direction (forward direction) of the vehicle is the front, the reverse direction is the rear, and the height direction is the vertical direction. Further, regarding the vehicle width direction (horizontal 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 seats (driver's seat and passenger's seat) of the vehicle, and air-conditioning registers are incorporated in the central portion and both side portions 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. Of these, the fin and the shut damper 40 are air flow adjusting portions having a plate-shaped portion and having adjusting surfaces for adjusting the flow state of air conditioning air formed on both sides of the plate-shaped portion in the thickness direction. Equivalent to. Next, each part constituting the air conditioning register will be described.

<Retainer 10>
The retainer 10 is made 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 "ventilation passage 11") of air conditioning air A sent from an air conditioner (not shown) through a ventilation duct. Here, regarding the flow direction of the air conditioning air A in the ventilation passage 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 ventilation passage 11 constitutes an air outlet 12 for air conditioning air A.

The ventilation passage 11 is surrounded by 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 of the air conditioning air A as a flow state, and are composed of a plurality of downstream fins 15 and a plurality of upstream fins 21.

Each downstream fin 15 includes a downstream fin main body 16 and a pair of downstream fin shafts 17. The downstream fin main body 16 and 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 arranged in the vicinity of the upstream of the air outlet 12 in the ventilation passage 11 in a state of being separated from each other in the vertical direction.

Both downstream fin shafts 17 project in directions away from each other from both end faces in the vehicle width direction of each downstream fin body 16. Each downstream fin 15 is tiltably supported by both vertical wall portions 13 on both downstream fin shafts 17.

In each downstream fin main body 16, a connecting shaft 18 is provided parallel to the downstream fin shaft 17 at a portion deviated upstream from one of the downstream fin shafts 17 (upper in FIG. 1). The connecting shaft 18 for each of the downstream fins 15 is connected by a long connecting rod 19 extending substantially in the vertical direction. The downstream fin main body 16, the downstream fin shaft 17, the connecting shaft 18, the connecting rod 19, and the like constitute a parallel link mechanism LM1 that tilts all the downstream fins 15 in a synchronized state.

Each upstream fin 21 includes an upstream fin main body 23 as a plate-shaped portion and a pair of upstream fin shafts 36. In FIG. 1, each upstream fin shaft 36 is illustrated by dots (.). As shown in FIGS. 1 and 2, the upstream fin main body 23 and both upstream fin shafts 36 are in the vertical direction, which is a direction intersecting both the flow direction of the air conditioning air A and the extension direction of the downstream fin shaft 17, respectively. It is extending. The upstream fin main body 23 is arranged upstream of the downstream fin 15 of the ventilation passage 11 in a state of being separated from each other in the vehicle width direction.

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

In each upstream fin main body 23, a connecting shaft 37 is provided parallel to the upstream fin shaft 36 at a portion deviated upstream from one of the upstream fin shafts 36 (upper in FIG. 2). The connecting shaft 37 for each of the upstream fins 21 is connected by a long connecting rod 38 extending in the vehicle width direction. The upstream fin body 23, the upstream fin shaft 36, the connecting shaft 37, the connecting rod 38, and the like constitute a parallel link mechanism LM2 that tilts 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 are combined. I have. The damper main body 41 is arranged upstream of the upstream fin 21 of the ventilation passage 11. The seal portion 42 is formed of a soft material, for example, a soft foam such as sponge, and is attached around the damper main body 41. The outer peripheral edge portion of the seal portion 42 is exposed to the outside of the outer peripheral edge portion of the damper main body 41. The damper shaft 43 projects from both end faces of the damper main body 41 in the vertical direction in a direction away from each other. This direction intersects 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 on 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 both vertical wall portions 13 of the retainer 10 and greatly opens the ventilation passage 11 as shown by a solid line in FIG. In the closed position, the shut damper 40 is inclined with respect to both vertical wall portions 13 as shown by the alternate long and short dash line in FIG. 1, and is in contact with both horizontal wall portions 14 and both vertical wall portions 13 of the retainer 10 at each seal portion 42. Then, the ventilation 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 ventilation passage 11, and includes an operation dial 46 and a rotation transmission unit 47. The operation dial 46 is arranged near 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 composed of 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 FIGS. 1 and 2, the operation knob 48 is a member operated by an occupant when changing the blowing direction of the air conditioning air A from the air outlet 12. The operation knob 48 is slidably mounted in the vehicle width direction with respect to the downstream fin main body 16 of the downstream fin 15 in the central portion in the vertical direction. The operation knob 48 can be tilted with the downstream fin shaft 17 as a fulcrum together with the downstream fin 15 in the central portion, and can be displaced in the vehicle width direction by sliding on the downstream fin main body 16 in the central portion. is there.

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

The upstream fin body 23 of the specific upstream fin 21 is formed with a notch 51, unlike the upstream fin body 23 (see FIG. 3A) of the other upstream fins 21. The cutout portion 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 both 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 49a extending upstream from the operation knob 48 in a state of being separated from each other in the extending direction of both downstream fin shafts 17. The distance between the two transmission pieces 49a is set to be slightly larger than the thickness (diameter) of the transmission shaft portion 52. Both transmission pieces 49a sandwich the transmission shaft portion 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, the vortex 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 in 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 defined as the upstream portion 27 of the upstream fin main body 23, and between the intermediate portion 25 and the downstream end portion 26. Is defined as the downstream portion 28 of the upstream fin main body 23. As shown in FIG. 6A, the thickness T1 of the upstream fin main body 23 is maximum at the portion 31 where the upstream fin shaft 36 is provided in the above flow direction. The thickness T1 increases as it approaches the intermediate portion 25 in the upstream portion 27, and decreases as it moves away from the intermediate portion 25 in the downstream portion 28.

The surfaces on both sides of each upstream fin main body 23 in the thickness direction form an adjusting surface 29 for adjusting the flow direction of the air conditioning air A.
A vortex generation pattern portion 32 is formed on each adjusting surface 29 adjacent to a portion 31 having a maximum thickness T1 of the upstream fin main body 23. In the present embodiment, the vortex 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, and is adjacent to the portion 31 with the portion 31 in between. It is formed in a place.

As shown in FIGS. 3A and 3B, each vortex generation pattern portion 32 has a plurality of protrusions 33 and 34 protruding from the adjusting 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 adjusting surface 29 is preferably 0.1 mm to 0.5 mm, and more preferably 0.3 mm to 0.5 mm. preferable. When the protrusion height H1 is set to a value in this range, it is possible to suitably suppress the generation of noise when the air conditioning air A passes through the upstream fins. If the protrusion height H1 is set excessively, the sound caused by the protrusions 33 and 34 will be generated.

As shown in FIGS. 3A and 3B, a plurality of protrusions 33 and 34 for each vortex generation pattern 32 are arranged along the vertical direction. This direction is the direction in which the air conditioning air A intersects the same flow direction before passing through 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 so as to be higher toward the downstream side, and each protrusion 34 is formed so as to be lower toward the downstream side. The length L1 which is the dimension in the extending direction of each of the protrusions 33 and 34 is preferably 2.0 mm to 5.0 mm. The angle θ1 formed by the adjacent protrusions 33 and 34 is preferably 80 ° to 100 °. The distance D1 between the adjacent protrusions 33 and 34 is preferably 0.7 mm to 1.3 mm.

As shown in FIG. 5, the vortex generation pattern portion 32 on the upstream side and the vortex generation pattern portion 32 on the downstream side in the flow direction form a gap 35 between adjacent protrusions 33 and 34, and the protrusions 33 and 34. It is formed in a state of being shifted in the vertical direction, which is the arrangement direction of.

The air-conditioning register of the present embodiment is configured as described above. Next, the operation of this air conditioning register will be described.
As shown by the alternate long and short dash line in FIG. 1, when the shut damper 40 is in the closed position, the ventilation passage 11 is blocked by the shut damper 40. The flow of the air conditioning air A downstream of the shut damper 40 is cut off, and the blowing of the air conditioning air A from the outlet 12 is stopped. At this time, when the seal portion 42 comes into contact with both the vertical wall portions 13, the shut damper 40 and each vertical wall portion 13 are sealed.

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

The switching from the closed position to the open position and the switching from the open position to the closed position of the shut damper 40 are performed through the rotation operation of the operation dial 46 shown in FIG. When the operation 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 is slid on the downstream fin 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 forked. It is transmitted to the specific upstream fin 21 through 49 and the transmission shaft portion 52. The specific upstream fins 21 are tilted in the same direction (vehicle width direction) as the sliding direction of the operation knob 48 with both upstream fin shafts 36 as fulcrums. The tilt of the particular 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 fin 21 is tilted in the same direction as the specific upstream fin 21 with both upstream fin shafts 36 as fulcrums.

On the other hand, when each shut damper 40 is in the open position and a force is applied to the operation knob 48 in the thickness direction, the force is transmitted to the downstream fin 15 provided with the operation knob 48. To. The downstream fin 15 is tilted with the downstream fin shaft 17 as a fulcrum. The tilt 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 fin 15 is 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 portion 52, and the upstream fin 21 is not tilted.

When both adjusting surfaces 29 of each upstream fin main body 23 are inclined with respect to the flow direction of the air conditioning air A before passing through the upstream end portion 24 of the upstream fin main body 23, the air conditioning air A is both. The flow direction can be changed by flowing along the adjusting surface 29. On the other hand, when both adjusting 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 fin 15 is the same as the upstream fin 21. Then, the air conditioning air A that has passed through the upstream fins 21 and the downstream fins 15 is blown out from the outlet 12.
By the way, as shown in FIGS. 6A and 6B, when both the adjusting 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 each of the upstream fins 21, it hits the upstream end portion 24 of the upstream fin main body 23 and is separated into two airflow portions A1 in the thickness direction.

Both airflow portions A1 flow from upstream to downstream along the adjusting surfaces 29 on both sides in the thickness direction of the upstream fin main body 23. The two airflow portions A1 flow in the upstream portion 27 of the upstream fin main body 23 so that the distance between the two airflow portions A1 increases toward the downstream side. The two airflow portions A1 flow so as to be closely spaced from each other in the downstream portion 28 of the upstream fin main body 23. Then, both airflow portions A1 join after passing through the downstream end portion 26 of the upstream fin main body 23.

Here, as shown in FIG. 6B, if the eddy current generation pattern portion 32 is not formed on each adjustment surface 29, both airflow portions A1 move from the upstream portion 27 to the intermediate portion 25 of the upstream fin main body 23. At the time of transition to the downstream portion 28, that is, when the direction of the flow is changed from the direction in which the distance between the two is widened to the direction in which the distance is narrowed, the airflow is attempted to be separated from the upstream fin body 23. Due to this peeling, a region Z1 in which the air conditioning air A does not flow is formed between each airflow portion A1 and the upstream fin main body 23, a pressure difference is generated, and noise may be generated.

In this regard, in the present embodiment in which the vortex generation pattern portion 32 is formed on each adjustment surface 29, as shown in FIG. 6A, the airflow portion A1 has a plurality of protrusions 33 in the middle of flowing along the adjustment surface 29. , 34. When the airflow portion A1 passes through the protrusions 33 and 34, it gets over the protrusions 33 and 34 and passes through the gap 35 between the adjacent protrusions 33 and 34. At the time of this passage, a small vortex V1 is generated downstream of the protrusions 33 and 34.

In particular, in the present embodiment, as shown in FIG. 5, a part of each airflow 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. By flowing along, it is guided to the gap 35 between the adjacent protrusions 33 and 34, and passes through the gap 35. That is, a part of the airflow portion A1 can change the flow direction before passing through the gap 35 between the adjacent protrusions 33 and 34. Therefore, it is possible to efficiently generate a small vortex V1 that sucks each airflow portion A1 toward the upstream fin body 23 as compared with the one in which the airflow portion A1 passes through the gap 35 without changing the flow direction. Become.

Further, since the pair of adjacent protrusions 33 and 34 extend in directions opposite to each other, the airflow portion A1 flows along the protrusions 33 and 34 in directions opposite to each other. Therefore, it is possible to efficiently generate a small vortex V1 that sucks each airflow portion A1 toward the upstream fin main body 23 as compared with the one in which the pair of adjacent protrusions 33 and 34 extend in the same direction. It becomes.

Further, in the present embodiment, the vortex generation pattern portion 32 is formed on each of the adjusting surfaces 29 on the upstream side and the downstream side in the flow direction with the portion 31 where the thickness of the upstream fin main body 23 is maximized. For this reason, the air-conditioning air A passes through the two eddy current generation pattern portions 32 while flowing along each of the adjusting surfaces 29. That is, both airflow portions A1 pass through the vortex generation pattern portion 32 twice when trying to separate from the upstream fin main body 23. When the airflow portion A1 passes through the protrusions 33 and 34 of each of the vortex generation pattern portions 32, the airflow portion A1 may overcome the protrusions 33 and 34 or pass through the gap 35 between the adjacent protrusions 33 and 34. To do. At the time of this passage, a small vortex V1 is generated downstream of the protrusions 33 and 34. Therefore, as compared with the case where one vortex generation pattern portion 32 is formed for each adjustment surface 29, it is possible to efficiently generate a small vortex V1 that sucks the airflow portion A1 toward the upstream fin body 23. ..

Each airflow portion A1 passes through a gap 35 between adjacent protrusions 33 and 34 in the vortex generation pattern portion 32 on the upstream side while flowing along the adjustment surface 29. At the time of this passage, a small vortex V1 is generated downstream of the protrusions 33 and 34.

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

Therefore, the gap 35 in the vortex generation pattern portion 32 on the upstream side and the gap 35 in the vortex generation pattern portion 32 on the downstream side do not deviate, and the airflow portion A1 passes through the gap 35 without changing the flow direction. It is possible to efficiently generate a small vortex V1 that sucks each airflow portion A1 toward the side closer to the upstream fin main body 23.

Then, when a small vortex V1 is generated as described above, as shown in FIG. 6A, each airflow portion A1 is sucked toward the side approaching the adjustment surface 29 due to the Coanda effect of the vortex V1. The phenomenon that the airflow portion A1 is separated from the upstream fin main body 23 is suppressed. Unlike the case where the airflow portion A1 is peeled off (see FIG. 6B), the region Z1 in which the air conditioning air A does not flow is less likely to occur between each airflow portion A1 and the upstream fin main body 23. Region Z1, if any, is smaller than that shown in FIG. 6 (b). As a result, it is possible to suppress the generation of noise due to the pressure difference in the same region Z1.

According to this embodiment, the following effects can be obtained in addition to the above.
A vortex generation pattern portion 32 is formed on the upstream fin 21. A downstream fin 15 is arranged on the downstream side of the upstream fin 21. Therefore, the vortex generation pattern portion 32 is less visible from the downstream side of the air conditioning register than when the vortex generation pattern portion 32 is formed on the downstream fin 15, and it is possible to prevent the appearance from being deteriorated due to the vortex generation pattern portion 32. can do.

In addition, the above-described embodiment can also be implemented as a modified example in which this is modified as follows.
<About the vortex generation pattern portion 32>
The target on which the vortex generation pattern portion 32 is formed may be changed to an air flow adjusting portion different from the upstream fin 21. In the above embodiment, the target includes the downstream fin 15 and the shut damper 40. In the case of the downstream fin 15, the downstream fin main body 16 forms a plate-like portion, both surfaces in the thickness direction thereof form an adjusting surface, and the downstream fin shaft 17 constitutes a fin shaft. A vortex 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-shaped portion, and the surfaces on both sides in the thickness direction thereof form an adjusting surface. A vortex generation pattern portion 32 is formed on each adjustment surface.

-In the case of an air-conditioning register in which the barrel as an air flow adjusting part is supported by a shaft so as to be tiltable to the retainer, the barrel is used as an air flow adjusting part on both sides (adjusting surfaces) in the thickness direction. The vortex generation pattern portion 32 may be formed.

As shown in FIG. 7, when the air-conditioning duct 61 arranged upstream of the air-conditioning register is curved, in order to smoothly guide the air-conditioning air A flowing in the air-conditioning duct 61 to the air-conditioning register. , A rectifying plate 62 that is curved corresponding to the air duct 61 may be attached to the upstream end of the retainer 10. The vortex generation pattern portion 32 described above may be formed on both side surfaces (adjustment surfaces 29) in the thickness direction using the straightening vane 62 as an air flow adjusting 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 vortex generation pattern portions 32 formed for each adjustment surface 29 may be changed to 1 or 3 or more.
-On each adjusting surface 29, a vortex generation pattern portion 32 may be formed at a location different from that of the above embodiment.

The vortex generation pattern portion 32 on the upstream side and the vortex generation pattern portion 32 on the downstream side are formed in a state where the gap 35 between the adjacent protrusions 33 and 34 is aligned with the arrangement direction of the protrusions 33 and 34. May be done.

-Each vortex generation pattern portion 32 may be composed of only the protrusion 33 or only the protrusion 34.
-The protrusions 33 and 34 constituting each vortex generation pattern portion 32 may be changed to a shape different from that of the above embodiment.

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

<About Shut Damper 40>
-As the shut damper 40, a damper main body 41 composed of a single member may be used as in the above embodiment, but a damper body 41 composed of a plurality of members may be used. In the latter case, the damper body may include a pair of damper plates that are tilted in opposite directions between the open position and the closed position with the damper shaft on the same line as a fulcrum. In this case, the surfaces on both sides of each damper plate in the thickness direction are used as adjustment surfaces, and a vortex generation pattern portion is formed here.

-The shut damper 40 may be omitted.
<Applicable parts>
-The above-mentioned air-conditioning register can also be applied to a place different from the instrument panel in the vehicle interior, for example, an air-conditioning register incorporated in a dashboard.

-The air-conditioning register can be widely applied not only to a vehicle but also to a vehicle as long as it includes an air flow adjusting unit for adjusting the flow state of the air-conditioning air A.

10 ... retainer, 11 ... ventilation path, 15 ... downstream fin (air flow adjusting part, fin), 16 ... downstream fin body (plate-shaped part, fin body), 17 ... downstream fin shaft (fin shaft), 21 ... upstream fin (Air flow adjusting part, fin), 23 ... upstream fin body (plate-shaped part, fin body), 24 ... upstream end, 25 ... middle part, 26 ... downstream end, 27 ... upstream part, 28 ... downstream part, 29 ... Adjustment surface, 31 ... Location, 32 ... Vortex generation pattern part, 33, 34 ... Projection part, 35 ... Gap, 36 ... Upstream fin shaft (fin shaft), 40 ... Shut damper (air flow adjustment part), 41 ... Damper body (plate-shaped part), 62 ... rectifying plate (air flow adjusting part), A ... air for air conditioning, T1 ... thickness.

Claims (5)

A tubular retainer with a ventilation path for air conditioning air,
An air-conditioning register having a plate-shaped portion and having an air-flow adjusting portion formed with adjusting surfaces for adjusting the flow state of the air-conditioning air on both sides of the plate-shaped portion in the thickness direction.
The air flow adjusting unit is composed of fins that adjust the flow direction as the flow state of the air conditioning air.
The fin includes a fin main body arranged in the middle of the ventilation passage and forming the plate-like portion, and a fin shaft protruding from the fin main body in a direction intersecting the flow direction.
The fin is tiltably supported by the retainer on the fin shaft.
A vortex generation pattern portion is formed on each adjustment surface of the fin body .
Each vortex generation pattern portion has a plurality of protrusions protruding from the adjusting surface in a state of being separated from each other.
The plurality of protrusions are arranged along a direction in which the air conditioning air intersects in the same flow direction before passing through the upstream end of the plate-shaped portion in the flow direction .
Of the fin body, the region between the upstream end and the intermediate portion in the flow direction is defined as the upstream portion of the fin body, and the region between the intermediate portion and the downstream end is defined as the downstream portion of the fin body. if you did this,
The thickness of the fin body increases as it approaches the intermediate portion in the upstream portion, and decreases as it moves away from the intermediate portion in the downstream portion.
The vortex generation pattern portion is an air-conditioning register formed at a location adjacent to the portion having the maximum thickness . The air-conditioning register according to claim 1, wherein each protrusion extends in a direction inclined with respect to the flow direction before passing through the upstream end of the plate-shaped portion and the arrangement direction of the protrusions. The air-conditioning register according to claim 2, wherein the adjacent protrusions extend in directions opposite to each other. The vortex generation pattern portion on each adjustment surface is formed at a portion adjacent to the upstream side and a portion adjacent to the downstream side in the flow direction with respect to the portion where the thickness of the plate-shaped portion is maximum. The air conditioning register according to any one of claims 1 to 3 . A claim in which the vortex generation pattern portion on the upstream side in the flow direction and the vortex generation pattern portion on the downstream side are formed in a state where the gap between adjacent protrusions is shifted in the arrangement direction of the protrusions. Item 4. The air conditioning register according to item 4 .