JP6985162B2 - Air conditioning register - Google Patents

Description

The present invention relates to an air-conditioning register that changes the direction of air-conditioning air sent from an air-conditioning device and blown into a room by fins.

In vehicles such as automobiles, a display device is installed in the central part of the instrument panel in the vehicle width direction, and air conditioning registers that blow out air conditioning air sent from the air conditioner are installed on both sides of the display device in the same direction. May be installed.

As shown in FIG. 5, the air-conditioning register has a retainer 64 in which the ventilation passage 61 of the air-conditioning air A1 is formed, the upstream end of the ventilation passage 61 is the inflow port 62, and the downstream end is the outlet 63. It is equipped with. The retainer 64 includes a pair of facing wall portions 65 arranged to face each other in the vehicle width direction (left-right direction in FIG. 5). In the downstream portion of the ventilation passage 61, a plurality of fins 66 are arranged in parallel with each other between the two facing wall portions 65. Each of these fins 66 is supported by a retainer 64 at a fin shaft 67 provided at a downstream end portion, and tilts in the same direction in a state of being synchronized with each other.

By the way, in recent years, the display device tends to be made larger in order to improve visibility and the like. Along with this, the installation space of the air conditioning register in the vehicle width direction becomes narrower. The air-conditioning register tends to be thin and has a smaller dimension in the vehicle width direction than the vertical dimension. Both the inflow port 62 and the outlet 63 have a vertically long rectangular shape, and their opening areas are reduced.

In the air conditioning register, the fins 66 serve as ventilation resistance, which causes an increase in pressure loss. The degree of influence of these fins 66 on the pressure loss increases as the opening area decreases. Therefore, in the thin air-conditioning register having a small opening area as described above, the pressure loss becomes large and the amount of the air-conditioning air A1 blown out from the outlet 63 becomes small.

Therefore, as shown in FIGS. 6 and 7, it is possible to form a guide surface 68 at a position close to the upstream side of the outlet 63 and sandwiching the plurality of fins 66 in each facing wall portion 65, for example. 1 and Patent Document 2. When the flow direction of the air-conditioning air A1 before passing through the fin 66 is set to the "flow direction before passing", both guide surfaces 68 are inclined with respect to the flow direction before passing so that the distance between them becomes wider toward the upstream side. do. Due to the formation of both guide surfaces 68, the opening area of the inflow port 62 becomes larger than the opening area of the outlet 63. Compared to the case where the opening area is the same at the inlet 62 and the outlet 63, the amount of the air conditioning air A1 flowing into the ventilation passage 61 through the inlet 62 is larger, and the air conditioning air A1 blown out from the outlet 63 is increased. It is possible to increase the amount of.

Japanese Unexamined Patent Publication No. 2017-165316 Japanese Unexamined Patent Publication No. 2013-116650

However, in the air-conditioning register of FIG. 6 described in Patent Document 1, the fin shaft 67 of the fin 66 on one side (left side of FIG. 6) approaches the nearest facing wall portion 65 (guide surface 68 on the left side). The gap between the fin shaft 67 and the guide surface 68 is very narrow. Therefore, it is difficult for the air-conditioning air A1 to flow between the fin 66 and the guide surface 68, and the amount of the air-conditioning air A1 blown out from the outlet 63 is reduced accordingly.

Further, in the air-conditioning register of FIG. 7 described in Patent Document 2, the air-conditioning air A1 can flow between the fin 66 and the guide surface 68. However, as shown in FIG. 7, the inclination of the fin 66 with respect to the flow direction before passing when the fin 66 is tilted to the end of the movable range is significantly different from the inclination of the guide surface 68. The gap between the fin 66 and the guide surface 68 becomes smaller as it approaches the outlet 63. The flow of the air conditioning air A1 is greatly obstructed in the vicinity of the air outlet 63 having a small gap, the pressure loss increases, and the amount of the air conditioning air A1 blown out from the air outlet 63 decreases.

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 increasing the amount of air-conditioning air blown out from an outlet.

The air-conditioning register that solves the above-mentioned problems includes a retainer in which a ventilation path for air-conditioning air is formed, and the upstream end of the ventilation path is an inlet and the downstream end is an outlet. A plurality of fins having a pair of facing wall portions arranged opposite to each other, arranged in parallel between the facing wall portions, and tilted in the same direction in synchronization with each other, are provided at the downstream end portions of the fin shafts. When the flow direction of the air-conditioning air supported by the retainer and before passing through the fins is set as the flow direction before passage, the plurality of the fins are close to the upstream side of the outlet in each facing wall portion. A guide surface that is inclined with respect to the flow direction before passing is formed at the sandwiched portion so that the distance between the two is wider toward the upstream side, so that the opening area of the inflow port is larger than the opening area of the air outlet. In the case of a large set air conditioning register in which the fins located at both ends in the arrangement direction are end fins, the fin axis of each end fin is separated from the nearest facing wall portion, and the facing wall portion thereof. An air-conditioning air flow path is formed between the two, and when all the fins are tilted to the end of the movable range, the upstream end is closest to the guide surface and the guide surface is the same as the end fin. Is inclined in the same tendency with respect to the flow direction before passing.

According to the above configuration, when the air-conditioning air flows into the ventilation path of the retainer through the inlet, the air-conditioning air flows through the ventilation path and then is blown out from the outlet. A part of the air conditioning air flowing through the ventilation path passes between the adjacent fins, and another part passes between the end fin and the guide surface next to the end fin. Air conditioning air that passes between adjacent fins flows along those fins. Further, the air conditioning air passing between the end fin and the guide surface adjacent to the end fin flows along the end fin and the guide surface. A part of the air-conditioning air can change the flow direction in a direction inclined with respect to the flow direction before passing by along the guide surface. The air-conditioning air flowing along each fin and the air-conditioning air whose flow direction is changed along both guide surfaces are merged and blown out from the outlet.

When each fin is parallel to the pre-passage flow direction, the air-conditioning air passing between the adjacent fins flows along the fins, so that the flow direction cannot be changed and is the same as the pre-passage flow direction. Flow in the direction. When each fin is inclined with respect to the flow direction before passing, the air-conditioning air passing between the adjacent fins flows along the fins, so that the flow direction of the fin can be changed in the inclined direction.

Here, the opening area of the inlet is larger than the opening area of the outlet because the guide surface is formed at the position adjacent to the upstream side of the outlet and sandwiching the plurality of fins in each facing wall portion of the retainer. Set. Therefore, the amount of air-conditioning air flowing into the ventilation passage through the inflow port is larger than that in the case where both opening areas are the same, and it is possible to increase the amount of air-conditioning air blown out from the outlet by that amount. It becomes.

In addition, each end fin moves closer to or further away from the adjacent guide surface as it tilts. Each end fin tilts with the fin axis at the downstream end as a fulcrum. From this, in each end fin, the upstream end portion, which is the farthest point from the fin axis, moves more than the other points of the same end fin when the same end fin is tilted.

In this respect, according to the above configuration, the fin axis of each end fin is separated from the nearest facing wall portion, and a flow path for air conditioning air is formed between the facing wall portion and the facing wall portion. Further, when all the fins are tilted to the end of the movable range, the end fins whose upstream end is closest to the guide surface and the guide surface are inclined in the same tendency with respect to the flow direction before passing. Therefore, even when the upstream end of the end fin is closest to the adjacent guide surface, a gap necessary for smooth flow of air conditioning air is formed between the end fin and the guide surface. The end fins are less likely to become the ventilation resistance of air conditioning air. The flow of air-conditioning air between each end fin and the guide surface is less likely to be obstructed (air-conditioning air easily flows), and an increase in pressure loss is suppressed. Therefore, it is possible to increase the amount of air conditioning air blown out from the outlet.

In the air-conditioning register, when all the fins are tilted to the end of the movable range, the end fin and the guide surface whose upstream end is closest to the guide surface pass through the guide surface at the same angle. It is preferable that it is inclined with respect to the forward flow direction.

According to the above configuration, when all the fins are tilted to the end of the movable range, the end fin whose upstream end is closest to the guide surface and the guide surface are at the same angle to each other in the flow direction before passing. Tilt against. In other words, the end fins and the guide surface become parallel, and the distance between the end fins and the guide surface becomes uniform in the flow direction of the air conditioning air. Compared to the case where the end fins and the guide surface are non-parallel, the flow of air conditioning air is less likely to be obstructed, and the air conditioning air easily flows through the gap between the end fins and the guide surface.

In the air conditioning register, when all the fins are tilted to the end of the movable range, the upstream end portion of one end fin is closest to the portion upstream of the guide surface of the nearest facing wall portion. When all the fins are tilted to the end of the movable range, the distance between the upstream end portion of the end fin and the portion of the facing wall portion where the upstream end portion is closest to each other is 1 mm or more. It is preferable that a gap of size is formed.

According to the above configuration, when all the fins are tilted to the end of the movable range, the upstream end of one end fin comes closest to the portion upstream of the guide surface of the nearest facing wall portion. At this time, a gap having a size of 1 mm or more is formed between the upstream end portion of the end fin and the portion of the facing wall portion where the upstream end portion is closest to each other, so that the air conditioning air makes an abnormal noise ( It flows smoothly through the above gap while suppressing the generation of whistle blowing noise.

In the air conditioning register, when all the fins are tilted to the end of the movable range, the upstream end portion of one end fin is closest to the guide surface of the nearest facing wall portion, and all of them. When the fin is tilted to the end of the movable range, it is preferable that a gap having a size of 1 mm or more is formed between the upstream end portion of the end fin and the guide surface.

According to the above configuration, when all the fins are tilted to the end of the movable range, the upstream end of one end fin comes closest to the guide surface of the nearest facing wall portion. At this time, a gap having a size of 1 mm or more is formed between the upstream end of the end fin and the guide surface, so that the air-conditioning air can suppress the generation of abnormal noise (whistle blowing noise) and the gap. Flows smoothly.

In the air-conditioning register, the outlet has a rectangular shape consisting of a pair of long side portions facing each other and a pair of short side portions facing each other in a state orthogonal to both long side portions, and each guide surface. Is close to the upstream side of the long side portion, and each fin is preferably arranged along the extending direction of the short side portion.

Since the outlet has a rectangular shape as described above, the opening area of the outlet becomes smaller. In a thin air-conditioning register having such an outlet with a small opening area, the fins that act as ventilation resistance and contribute to the pressure loss have a greater influence on the pressure loss than the non-thin air-conditioning register. .. With a thin air-conditioning register, unless special measures are taken, the pressure loss becomes large and the amount of air-conditioning air blown out from the outlet becomes small.

Therefore, as described above, the opening area of the inlet is larger than that of the outlet, the fin shaft is arranged away from the facing wall portion, and the end fins and the guide surface have the same tendency with respect to the flow direction before passing. By inclining in the direction, the effect of increasing the amount of air conditioning air blown out from the outlet can be particularly effectively obtained.

According to the air conditioning register, the amount of air conditioning air blown out from the outlet can be increased.

It is a figure which shows one embodiment embodied in the air-conditioning register which is built in and used in a vehicle, and is the partial plan sectional view of the air-conditioning register which the fin is in the neutral state. The schematic diagram which shows the relationship between the opening area of an inlet and the opening area of an outlet in one Embodiment. FIG. 1 is a partial plan sectional view of an air conditioning register in which the fins are tilted from the neutral state of FIG. 1 to one end of the movable range. FIG. 3 is a partial plan sectional view of an air conditioning register in which the fins are tilted from the neutral state of FIG. 1 to the end of the movable range opposite to that of FIG. Partial plan sectional view of a conventional air conditioning register. FIG. 5 is a plan sectional view of a conventional air-conditioning register of a type different from that of FIG. A partial plan sectional view of a conventional air-conditioning register of a type different from that of FIGS. 5 and 6.

Hereinafter, an embodiment embodied in an air-conditioning register incorporated in a vehicle and used will be described with reference to FIGS. 1 to 4.
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 (left-right direction), the direction is defined based on the case where the vehicle is viewed from the rear.

An instrument panel is provided in front of the driver's seat and the passenger seat in the vehicle interior, and a display device in the navigation system is incorporated in the central portion in the vehicle width direction. In the instrument panel, the air-conditioning registers of the present embodiment are incorporated on both sides of the display device in the vehicle width direction. Both air conditioning registers have the same configuration. The main function of these air-conditioning registers is to change at least the direction (wind direction) of the air-conditioning air (hot air or cold air) sent from the air-conditioning device and blown into the vehicle interior.

FIG. 1 shows a part of the air conditioning register 10. The air conditioning register 10 includes a retainer 11 and a plurality of fins. The retainer 11 is for connecting a ventilation duct (not shown) of the air conditioner and an opening (not shown) provided in the instrument panel, and includes a retainer main body 12 and a bezel 15. The retainer main body 12 is made of a plurality of members formed by using a hard resin material, and has a cylindrical shape with both ends open.

The internal space of the retainer 11 constitutes a flow path (hereinafter referred to as "ventilation passage 13") of the air conditioning air A1 sent from the air conditioner. Here, regarding the flow direction of the air conditioning air A1, the side closer to the air conditioner is referred to as "upstream", and the side far from the air conditioner is referred to as "downstream". As shown in FIGS. 1 and 2, the upstream end of the ventilation passage 13 has a vertically long rectangular shape, and constitutes the inflow port 14 of the air conditioning air A1.

The bezel 15 is a member constituting the most downstream portion of the retainer 11, and is arranged in a state of being adjacent to the retainer main body 12 on the downstream side thereof. The bezel 15 is inclined with respect to the flow direction before passing through the air conditioning air A1 which will be described later. In the bezel 15, an outlet 16 from which the air conditioning air A1 is blown out is formed at a position at the downstream end of the ventilation passage 13. The outlet 16 has the same shape and size as the outlet in a conventional air conditioning register. The outlet 16 is composed of a pair of long side portions 18 facing each other in the vehicle width direction and a pair of short side portions 17 facing each other in the vertical direction in a direction orthogonal to both long side portions 18. It has a vertically long rectangular shape with a narrower width than the entrance 14. Like the bezel 15, the outlet 16 is inclined with respect to the flow direction of the air conditioning air A1 before passing.

The downstream end surface of the bezel 15 constitutes the design surface of the air conditioning register 10.
The ventilation passage 13 is surrounded by four walls of the retainer 11. These four wall portions are composed of a pair of facing wall portions (vertical wall portions) 21 and 22 facing each other in the vehicle width direction and a pair of facing wall portions (horizontal wall portions) 23 facing each other in the vertical direction. The facing wall portions 21 and 22 are located upstream of the corresponding long side portion 18 of the outlet 16, and each facing wall portion 23 is located upstream of the corresponding short side portion 17 of the outlet 16.

Each of the plurality of fins is made of a hard resin material and is formed in the shape of a long plate extending in the vertical direction. These fins are arranged in a state of being parallel to each other in the vehicle width direction, which is the direction along the short side portion 17 of the outlet 16, in the vicinity of the ventilation path 13 upstream of the outlet 16.

Here, in order to distinguish the above three fins, those located in the intermediate portion in the arrangement direction (vehicle width direction) are referred to as intermediate fins 31, and those located at both ends are referred to as end fins 32 and 33. An operation knob 34 is mounted on the intermediate fin 31 so as to be slidable in the vertical direction.

Fin shafts 35 extending in the vertical direction are provided at the downstream ends of the intermediate fins 31 and the end fins 32 and 33, respectively. The intermediate fins 31 and the end fins 32 and 33 are supported by the upper and lower facing wall portions 23 on their own fin shafts 35.

The fins 32 and 33 at both ends are connected to the intermediate fin 31 so as to be able to transmit power by a parallel link mechanism (not shown). As the parallel link mechanism, for example, in the intermediate fins 31 and the fins 32 and 33 at both ends, a connecting pin provided in parallel with the fin shaft 35 on the upstream side of the fin shaft 35 and a long shape extending in the vehicle width direction. However, the one provided with a connecting rod for connecting the connecting pins to each other is used. By this parallel link mechanism, the fins 32 and 33 at both ends are tilted in the same direction in a state of being synchronized with the intermediate fin 31.

A plurality of upstream fins, shut dampers, and the like are arranged upstream of the intermediate fins 31 and the fins 32 and 33 at both ends of the ventilation passage 13, but the illustration is omitted here.

The plurality of upstream fins are for changing the vertical blowing direction of the air conditioning air A1 from the outlet 16, and are arranged in the vicinity of the upstream of the intermediate fin 31 and the fins 32 and 33 at both ends. The plurality of upstream fins are arranged in a state of being separated from each other in the vertical direction between the upper and lower facing wall portions 23, and can be tilted in the vertical direction with respect to the two facing wall portions 21 and 22 on the fin axis. Is supported by. The plurality of upstream fins are connected so as to be able to transmit power by a parallel link mechanism (not shown) provided separately from the parallel link mechanism.

The shut damper is for opening and closing the ventilation passage 13 further upstream than the plurality of upstream fins in the retainer 11. The shut damper is supported by the damper shaft with respect to both facing wall portions 21 and 22 or with respect to both facing wall portions 23. The shut damper can be tilted between an open position where the ventilation passage 13 is fully opened and a closed position where the ventilation passage 13 is fully closed, with the damper shaft as a fulcrum.

The air-conditioning register of the present embodiment has the following configuration in addition to the above basic structure.
The flow direction of the air conditioning air A1 before passing through the intermediate fin 31 and the fins 32 and 33 at both ends is defined as the “flow direction before passing”. In each of the facing wall portions 21 and 22, the flow direction of the air conditioning air A1 is changed at a location close to the upstream side of the long side portion 18 of the outlet 16 and sandwiching the intermediate fin 31 and the fins 32 and 33 at both ends. Guide surfaces 24 and 25 are formed. Both guide surfaces 24 and 25 are inclined with respect to the flow direction before passing so that the distance between them becomes wider toward the upstream side. By forming both guide surfaces 24 and 25 on the facing wall portions 21 and 22, the inlet 14 becomes wider than the outlet 16, and the opening area S1 of the inlet 14 is larger than the opening area S2 of the outlet 16. Has also been made larger.

Of the portions of the facing wall portions 21 and 22 facing the ventilation passage 13, the portions different from the guide surfaces 24 and 25 are formed by surfaces parallel to the flow direction before passing. The corresponding portion includes a portion downstream of the guide surfaces 24 and 25, or, in other words, a portion between the guide surfaces 24 and 25 and the bezel 15. A surface downstream of the guide surfaces 24 and 25 and parallel to the flow direction before passing is located on the back side (upstream side) of the peripheral portion of the outlet 16 in the bezel 15. Such a configuration is adopted in order to hide the guide surfaces 24 and 25 by the bezel 15 so that the guide surfaces 24 and 25 cannot be seen or obscured from the downstream side of the air conditioning register 10.

The fin shaft 35 of the left end fin 32 is separated from the downstream end portion of the left facing wall portion 21 toward the facing wall portion 22, and the flow path 36 of the air conditioning air A1 is provided between the facing wall portion 21 and the downstream end portion. Is forming. The fin shaft 35 of the right end fin 33 is separated from the downstream end portion of the right facing wall portion 22 toward the facing wall portion 21, and a flow path 37 of the air conditioning air A1 is provided between the facing wall portion 22 and the downstream end portion. Is forming.

As shown in FIG. 1, a state in which all of the intermediate fins 31 and the fins 32 and 33 at both ends are parallel to the flow direction before passing is referred to as a “neutral state”. All of the intermediate fins 31 and the fins 32 and 33 at both ends are configured to be tilted up to 20 ° in the counterclockwise direction of FIG. 1 from the neutral state and tilted up to 20 ° in the clockwise direction from the neutral state. ing. Such a configuration can be realized, for example, by providing the retainer 11 with a stopper for restricting further tilt when the intermediate fin 31 and the fins 32 and 33 at both ends are tilted by 20 ° from the neutral state. Therefore, all of the intermediate fins 31 and the fins 32 and 33 at both ends are tilted 20 ° counterclockwise from the neutral state (see FIG. 3) and 20 ° clockwise from the neutral state. The angle range sandwiched by (see FIG. 4) is the movable range of the intermediate fin 31 and the fins 32 and 33 at both ends.

In other words, as shown in FIG. 3, the intermediate fin 31 and the both end fins 32 and 33 tilted counterclockwise from the neutral state of FIG. 1 to one end of the movable range move in the flow direction before passing. The facing angle α1 is set to 20 °. Further, as shown in FIG. 4, the intermediate fin 31 and the both end fins 32, 33 tilted clockwise from the neutral state of FIG. 1 to the end of the movable range opposite to that of FIG. 3 are in the flow direction before passing. The angle α2 with respect to the object is set to 20 °.

Further, the angle α3 formed by the guide surface 24 on the left side with respect to the flow direction before passing is set so as to satisfy the following condition 1.
Condition 1: As shown in FIG. 3, when the intermediate fin 31 and the both end fins 32, 33 are tilted to one end of the movable range, the upstream end portion 32a is the end fin 32 closest to the guide surface 24 on the left side. And the guide surface 24 are inclined in the same direction with respect to the flow direction before passing.

In the present embodiment, the left end fin 32 and the left guide surface 24 are inclined at the same angle with respect to the flow direction before passing, and this is defined as “inclining in the same tendency”. There is. More specifically, the angle α3 of the guide surface 24 is set to 20 °.

Further, the angle α4 formed by the guide surface 25 on the right side with respect to the flow direction before passing is set so as to satisfy the following condition 2.
Condition 2: As shown in FIG. 4, when the intermediate fin 31 and the both end fins 32, 33 are tilted to the other end of the movable range, the upstream end portion 33a is the end fin 33 closest to the guide surface 25 on the right side. And the guide surface 25 are inclined in the same direction with respect to the flow direction before passing.

In the present embodiment, the right end fin 33 and the right guide surface 25 are inclined at the same angle with respect to the flow direction before passing, and this is defined as "inclining in the same tendency direction". There is. More specifically, the angle α4 is set to 20 °.

Further, in the present embodiment, the pair of guide surfaces 24, 25 are formed in a shape and size asymmetrical in the vehicle width direction. The dimension of the guide surface 25 on the right side in the flow direction is set to be larger than the dimension of the guide surface 24 on the left side in the flow direction. With this setting, when the intermediate fin 31 and the both end fins 32, 33 are tilted to one end of the movable range as shown in FIG. 3, the upstream end portion 32a of the left end fin 32 becomes the left facing wall portion 21. Therefore, it is configured to be closest to a portion upstream of the guide surface 24 (a portion parallel to the flow direction before passing). Then, in this state, the gap G1 between the upstream end portion 32a and the portion of the facing wall portion 21 where the upstream end portion 32a is closest to each other is set to a size of 1 mm or more. In this embodiment, this gap G1 is set to 2 mm.

Further, according to the above settings regarding the shape and size of the guide surfaces 24 and 25, when the intermediate fin 31 and the both end fins 32 and 33 are tilted to the other end of the movable range as shown in FIG. 4, the end fin 33 The upstream end portion 33a is configured to be closest to the guide surface 25 on the right side. Then, in this state, the gap G2 between the upstream end portion 33a and the guide surface 25 is set to a size of 1 mm or more. In this embodiment, the gap G2 is set to 2 mm.

The air-conditioning register 10 of the present embodiment is configured as described above. Next, the operation and effect of the air conditioning register 10 will be described.
In the air-conditioning register 10 of the present embodiment, the intermediate fins 31 and the fins 32 and 33 at both ends arranged in parallel with each other are in the same direction in a state of being synchronized with each other with the fin shaft 35 provided at the downstream end thereof as a fulcrum. Is tilted to. Along with this tilt, the degree of tilt of the intermediate fins 31 and the fins 32 and 33 at both ends with respect to the flow direction before passing changes.

When the air-conditioning air A1 flows into the ventilation passage 13 of the retainer 11 in the air-conditioning register 10 through the inflow port 14, the air-conditioning air A1 is blown out from the outlet 16 after flowing through the ventilation passage 13.

A part of the air conditioning air A1 passes between the intermediate fin 31 and the end fin 32 and between the intermediate fin 31 and the end fin 33 while flowing through the ventilation passage 13. Further, a part of the air conditioning air A1 passes between the end fin 32 and the guide surface 24 on the left side thereof, and between the end fin 33 and the guide surface 25 on the right side thereof.

The air-conditioning air A1 that passes between the intermediate fins 31 and the end fins 32 and between the intermediate fins 31 and the end fins 33 flows along the intermediate fins 31 and the end fins 32 and 33. Further, the air-conditioning air A1 passing between the end fin 32 and the guide surface 24 on the left side thereof flows along the end fin 32 and the guide surface 24. Further, the air-conditioning air A1 passing between the end fins 33 and the guide surface 25 on the right side thereof flows along the end fins 33 and the guide surface 25.

By flowing along the guide surfaces 24 and 25, the air-conditioning air A1 can change the flow direction in a direction inclined with respect to the flow direction before passing. The flow direction changed by both the guide surfaces 24 and 25 is a direction in which the air-conditioning air A1 flowing along the guide surface 24 and the air-conditioning air A1 flowing along the guide surface 25 come closer to each other toward the downstream side. The air-conditioning air A1 flowing along the intermediate fins 31 and the end fins 32 and 33 and the air-conditioning air A1 whose flow direction is changed along the guide surfaces 24 and 25 merge and are blown out from the outlet 16. To.

As shown in FIG. 1, when the intermediate fins 31 and the fins 32 and 33 at both ends are parallel to the flow direction before passing, the air conditioning air A1 passing between the intermediate fins 31 and the end fins 32 is also in the middle. The air-conditioning air A1 passing between the fins 31 and the end fins 33 cannot change the flow direction, and also flows in the same direction as the flow direction before passing.

As shown in FIGS. 3 and 4, when the intermediate fins 31 and the fins 32 and 33 at both ends are inclined with respect to the flow direction before passing, the air conditioning air A1 passing between the intermediate fins 31 and the end fins 32 is also intermediate. The air conditioning air A1 passing between the fins 31 and the end fins 33 can also change the flow direction in the direction in which the intermediate fins 31 and the end fins 32 and 33 are inclined.

Here, as shown in FIG. 5, it is difficult to tilt the fin 66 significantly in the conventional air-conditioning register in which the opening area of the inflow port 62 is about the same as the opening area of the outlet 63. This is because the fin 66 interferes with the nearest facing wall portion 65. Therefore, in the tilting direction of the fin 66, the region where the air conditioning air A1 can be blown out becomes narrow.

In this respect, in the present embodiment, the guide surfaces 24 and 25 are formed in the respective facing wall portions 21 and 22 of the retainer 11 close to the upstream side of the outlet 16 and sandwiching the intermediate fin 31 and the both end fins 32 and 33. As a result, the opening area S1 of the inflow port 14 is made larger than the opening area S2 of the outlet 16 (see FIG. 2). Therefore, the movable area of the end fins 32 and 33 is larger than that of the conventional air-conditioning register shown in FIG. 5 in which the guide surfaces 24 and 25 are not formed. With respect to the tilting direction of the end fins 32 and 33, the area where the air conditioning air A1 can be blown out can be widened.

Further, as compared with the case where the opening area S1 of the inlet 14 is the same as the opening area S2 of the outlet 16, the amount of air conditioning air A1 flowing in through the inlet 14 is larger, and the air is blown out from the outlet 16 by that amount. It is possible to increase the amount of air conditioning air A1.

Further, the end fins 32 and 33 move closer to or further away from the adjacent guide surfaces 24 and 25 as they are tilted. As described above, the end fins 32 and 33 tilt with the fin shaft 35 at the downstream end as a fulcrum. From this, in each of the end fins 32 and 33, the upstream end portions 32a and 33a, which are the locations farthest from the fin shaft 35, are other than the same end fins 32 and 33 when the same end fins 32 and 33 are tilted. Move more than the location of.

If the angle α3 is smaller than the angle α1, the gap between the upstream end portion 32a of the end fin 32 and the guide surface 24 is excessive when the intermediate fin 31 and the both end fins 32 and 33 are tilted to the end of the movable range. When the air conditioning air A1 passes through the gap, a whistle blowing sound may be generated. Similarly, if the angle α4 is smaller than the angle α2, when the intermediate fin 31 and the both end fins 32, 33 are tilted to the end of the movable range, the upstream end portion 33a of the end fin 33 and the guide surface 25 The gap becomes excessively small, and there is a possibility that a whistle blowing sound is generated when the air conditioning air A1 passes through the gap.

Further, when the angle α3 becomes larger than the appropriate value, a part of the air conditioning air A1 hits the guide surface 24 and rebounds, and the amount of the air conditioning air A1 flowing along the guide surface 24 is reduced by that amount. Similarly, when the angle α4 becomes larger than the appropriate value, a part of the air-conditioning air A1 hits the guide surface 25 and rebounds, and the amount of the air-conditioning air A1 flowing along the guide surface 25 is reduced by that amount.

In this respect, in the present embodiment, the flow path 36 of the air conditioning air A1 is formed between the fin shaft 35 of the left end fin 32 and the downstream end of the left facing wall portion 21, and the right end fin 33 A flow path 37 for air conditioning air A1 is formed between the fin shaft 35 and the downstream end of the facing wall portion 22 on the right side.

Here, in the conventional air-conditioning register shown in FIG. 7, as described above, as the gap between the fin 66 and the guide surface 68 when the fin 66 is tilted to the end of the movable range becomes closer to the outlet 63. It becomes smaller. The flow of the air conditioning air A1 is greatly obstructed in the vicinity of the air outlet 63 having a small gap, the pressure loss increases, and the amount of the air conditioning air A1 blown out from the air outlet 63 decreases.

In this regard, in the present embodiment, as shown in FIG. 3, when the intermediate fin 31 and the both end fins 32, 33 are tilted to one end of the movable range, the upstream end portion 32a is the end closest to the guide surface 24. The fin 32 and the guide surface 24 are inclined in the same direction with respect to the flow direction before passing. Therefore, even when the upstream end portion 32a of the end fin 32 is closest to the guide surface 24 adjacent to the left, the gap required for the air conditioning air A1 to flow smoothly between the end fin 32 and the guide surface 24. Is formed. The end fins 32 are unlikely to become the ventilation resistance of the air conditioning air A1. The flow of the air-conditioning air A1 between the end fins 32 and the guide surface 24 is less likely to be obstructed (the air-conditioning air A1 easily flows), and the increase in pressure loss is suppressed. By that amount, the amount of air conditioning air A1 blown out from the outlet 16 can be increased.

Similarly, as shown in FIG. 4, when the intermediate fin 31 and the both end fins 32, 33 are tilted to the other end of the movable range, the upstream end portion 33a is the same guide as the end fin 33 closest to the guide surface 25. The surface 25 and the surface 25 are inclined in the same direction with respect to the flow direction before passing. Therefore, even when the upstream end 33a of the end fin 33 is closest to the guide surface 25 on the right side, the gap required for the air conditioning air A1 to flow smoothly between the end fin 33 and the guide surface 25. Is formed. The end fins 33 are unlikely to become the ventilation resistance of the air conditioning air A1. The flow of the air-conditioning air A1 between the end fins 33 and the guide surface 25 is less likely to be obstructed (the air-conditioning air A1 easily flows), and the increase in pressure loss is suppressed. By that amount, the amount of air conditioning air A1 blown out from the outlet 16 can be increased.

In particular, in the present embodiment, when the intermediate fin 31 and the both end fins 32 and 33 are tilted to one end of the movable range as shown in FIG. 3, the end fin 32 and the guide surface 24 are at the same angle (as opposed to each other). At 20 °), it tilts with respect to the flow direction before passing. In other words, the end fins 32 and the guide surface 24 are parallel to each other, and the distance between them becomes uniform in the flow direction of the air conditioning air A1. Compared with the case where the end fin 32 and the guide surface 24 are not parallel to each other, the flow of the air conditioning air A1 is less likely to be obstructed, and the increase in pressure loss is suppressed. The amount of air-conditioning air A1 blown out from the outlet 16 can be made larger than when the end fins 32 and the guide surface 24 are non-parallel.

Similarly, as shown in FIG. 4, when the intermediate fin 31 and the both end fins 32, 33 are tilted to the other end of the movable range, the end fin 33 and the guide surface 25 are at the same angle (20 °) with each other. Inclines with respect to the flow direction before passing. In other words, the end fins 33 and the guide surface 25 are parallel to each other, and the distance between them becomes uniform in the flow direction of the air conditioning air A1. Compared with the case where the end fin 33 and the guide surface 25 are not parallel to each other, the flow of the air conditioning air A1 is less likely to be obstructed, and the increase in pressure loss is suppressed. The amount of air-conditioning air A1 blown out from the outlet 16 can be made larger than when the end fins 33 and the guide surface 25 are non-parallel.

Further, since the angle α3 formed with respect to the flow direction before passing through the guide surface 24 is set to an appropriate size (20 °), the air conditioning air A1 hits the guide surface 24 and then hits the guide surface 24. By flowing along, the flow direction is changed. Unlike the case where the angle α3 is excessively large, the air conditioning air A1 is unlikely to bounce after hitting the guide surface 24. The amount of air-conditioning air A1 flowing along the guide surface 24 increases accordingly.

Similarly, since the angle α4 formed by the guide surface 25 with respect to the flow direction before passing is set to an appropriate size (20 °), the air conditioning air A1 hits the guide surface 25 and then the guide surface 25. By flowing along, the flow direction is changed. Unlike the case where the angle α4 is excessively large, the air conditioning air A1 is unlikely to bounce after hitting the guide surface 25. The amount of air conditioning air A1 flowing along the guide surface 25 increases by that amount.

From the various things described above, according to the air-conditioning register 10 of the present embodiment, the amount of air-conditioning air A1 blown out from the outlet 16 can be increased.
Further, in the present embodiment, the gap G1 between the upstream end portion 32a and the facing wall portion 21 is set to 1 mm or more (2 mm). Therefore, as shown in FIG. 3, the intermediate fin 31 and the both end fins 32, 33 are tilted to one end of the movable range, and the upstream end portion 32a of the one end fin 32 is the guide surface of the nearest facing wall portion 21. When the air-conditioning air A1 is closest to a location upstream of 24, the air-conditioning air A1 can smoothly flow through the gap G1 while suppressing the generation of abnormal noise (whistle blowing noise).

Further, in the present embodiment, the gap G2 between the upstream end portion 33a and the guide surface 25 is set to 1 mm or more (2 mm). Therefore, as shown in FIG. 4, the intermediate fin 31 and the both end fins 32, 33 are tilted to the other end of the movable range, and the upstream end portion 33a of the other end fin 33 is the guide surface of the nearest facing wall portion 22. When the air is closest to 25, the air-conditioning air A1 can smoothly flow through the gap G2 while suppressing the generation of abnormal noise (whistle blowing noise).

Further, when the angle α3 is smaller than the angle α1, the directivity of the air conditioning air A1 may decrease depending on the deviation of the angle α1 with respect to the angle α3. Similarly, if the angle α4 is smaller than the angle α2, the directivity of the air conditioning air A1 may decrease depending on the deviation of the angle α2 with respect to the angle α4.

These have a large effect on the air-conditioning air A1 flowing along the guide surfaces 24 and 25 on the air-conditioning air A1 flowing along the intermediate fins 31 and the fins 32 and 33 at both ends, and are tilted to the end of the movable range. This is because it becomes difficult to blow out the air conditioning air A1 in the direction in which the fins 31 and the fins 32 and 33 at both ends are directed.

In this respect, in the present embodiment, the angle α3 is set to be the same as the angle α1 and the angle α4 is set to be the same as the angle α2 as described above. Therefore, the air conditioning air A1 can be blown out in the direction in which the intermediate fin 31 tilted to the end of the movable range and the fins 32 and 33 at both ends are directed.

According to this embodiment, the following effects can be obtained in addition to the above.
Since the outlet 16 has a vertically long rectangular shape, the opening area S2 of the outlet 16 becomes smaller. In a thin air-conditioning register 10 having such a small outlet 16 with an opening area S2, the degree of influence of the intermediate fins 31 and the end fins 32 and 33, which act as ventilation resistance and contribute to the pressure loss, on the pressure loss is Larger than non-thin air conditioning registers. In the thin air-conditioning register 10, unless special measures are taken, the pressure loss becomes large and the amount of air-conditioning air A1 blown out from the outlet 16 becomes small.

Therefore, the opening area S1 is made larger than the opening area S2, the fin shaft 35 is arranged apart from the facing wall portions 21 and 22, and the end fins 32 and 33 and the guide surfaces 24 and 25 are passed in the flow direction before passing. On the other hand, by inclining in the same tendency direction, the effect of increasing the amount of the air-conditioning air A1 blown out from the outlet 16 can be obtained particularly effectively.

It should be noted that the above embodiment can also be implemented as a modified example in which this is modified as follows.
-The number of intermediate fins 31 may be changed to "2" or more or "0".

The bezel 15 having the outlet 16 may be arranged so as to be orthogonal to the flow direction before passing through the air conditioning air A1.
In this case, the shapes and sizes of the guide surfaces 24 and 25 may be changed to shapes and sizes that are symmetrical to each other in the vehicle width direction.

The angle α3 is preferably the same as the angle α1, but may be a value belonging to an angle range of several degrees including the same angle α1.
Similarly, the angle α4 is preferably the same as the angle α2, but may be a value belonging to an angle range of several degrees including the same angle α2.

-The angle α1 and the angle α2 may be set to different values. However, in this case, the angle α3 is set to the same value as or close to the angle α1, and the angle α4 is set to the same value or close to the angle α2.
When the intermediate fin 31 and the fins 32 and 33 at both ends are tilted to the end of the movable range, the upstream end portion 32a of the end fin 32 comes closest to the portion upstream of the guide surface 24 of the facing wall portion 21. , The upstream end portion 33a of the end fin 33 may be changed to the configuration in which the upstream end portion 33a of the end fin 33 is closest to the portion upstream of the guide surface 25 of the facing wall portion 22.

When the intermediate fin 31 and the both end fins 32, 33 are tilted to the end of the movable range, the upstream end 33a of the end fin 33 comes closest to the guide surface 25 of the facing wall portion 22, and the end fin 32 The upstream end portion 32a may be changed to a configuration that is closest to the guide surface 24 of the facing wall portion 21.

-In the facing wall portions 21 and 22, a portion downstream of the guide surfaces 24 and 25 and parallel to the flow direction before passing may be omitted, and the guide surfaces 24 and 25 may be connected to the outlet 16.
-The above-mentioned air-conditioning register may be applied to a thin air-conditioning register having a horizontally long air outlet.

-The above air-conditioning register can also be applied to a non-thin air-conditioning register.
-The above-mentioned air-conditioning register can also be applied to an air-conditioning register incorporated in a place different from both sides of the display device in the vehicle width direction in the instrument panel.

-The above-mentioned air-conditioning register can also be applied to an air-conditioning register incorporated in a place different from the instrument panel in the vehicle interior.
-The above-mentioned air-conditioning register can be widely applied not only to vehicles but also to those that change the direction of the air-conditioning air sent from the air-conditioning device and blown into the room from the air outlet.

10 ... Air conditioning register, 11 ... Retainer, 13 ... Ventilation channel, 14 ... Inlet, 16 ... Outlet, 17 ... Short side, 18 ... Long side, 21,22 ... Opposing wall, 24, 25 ... Guide Surface, 31 ... Intermediate fin, 32, 33 ... End fin, 32a, 33a ... Upstream end, 35 ... Fin shaft, 36, 37 ... Flow path, A1 ... Air conditioning air, G1, G2 ... Gap, S1, S2 ... Opening area, α1, α2, α3, α4 ... Angle.

Claims (5)

A retainer is provided in which a ventilation path for air conditioning air is formed, and the upstream end of the ventilation path is used as an inlet and the downstream end is used as an outlet.
The retainer comprises a pair of facing wall portions arranged to face each other.
A plurality of fins arranged parallel to each other and tilting in the same direction in synchronization with each other are supported by the retainer at a fin shaft provided at the downstream end.
When the flow direction of the air-conditioning air before passing through the fins is set as the flow direction before passing through, the upstream side of each facing wall portion is close to the upstream side of the outlet and the portion sandwiching the plurality of fins is upstream. For air conditioning, the opening area of the inflow port is set to be larger than the opening area of the air outlet by forming a guide surface that is inclined with respect to the flow direction before passing so that the distance between the sides becomes wider. It ’s a register,
When the fins located at both ends in the arrangement direction are end fins, the fin axis of each end fin is separated from the nearest facing wall portion, and a flow path for air conditioning air is provided between the facing wall portion and the end fin. When all the fins are tilted to the end of the movable range, the end fin and the guide surface whose upstream end is closest to the guide surface are the same with respect to the flow direction before passing. all SANYO which is inclined in the direction of the trend,
The fin shaft of each end fin is an air conditioning register provided inside the outlet in the arrangement direction. When all the fins are tilted to the end of the movable range, the end fin and the guide surface whose upstream end is closest to the guide surface are inclined with respect to the flow direction before passing at the same angle. The air-conditioning register according to claim 1. When all the fins are tilted to the end of the movable range, the upstream end of one end fin is closest to the location upstream of the guide surface of the nearest facing wall portion.
When all the fins are tilted to the end of the movable range, the size of 1 mm or more is between the upstream end of the end fin and the part of the facing wall where the upstream end is closest. The air-conditioning register according to claim 1 or 2, wherein a gap is formed. When all the fins are tilted to the end of the movable range, the upstream end of one end fin is closest to the guide surface of the nearest facing wall portion.
Claims 1 to 3 form a gap having a size of 1 mm or more between the upstream end of the end fin and the guide surface when all the fins are tilted to the end of the movable range. The air conditioning register according to any one of the following items. The outlet has a rectangular shape consisting of a pair of long sides facing each other and a pair of short sides facing each other at right angles to both long sides.
Each guide surface is close to the upstream side of the long side portion.
The air-conditioning register according to any one of claims 1 to 4, wherein each fin is arranged along the extending direction of the short side portion.

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