JP7267074B2 - register - Google Patents

Description

The present invention relates to registers for ventilation and air conditioning.

Conventionally, for example, various registers have been proposed in which movable fins for changing the sending direction are provided in a blowing passage for blowing conditioned air adjusted by an air conditioner. For example, the register of Patent Document 1 includes vertical fins and horizontal fins provided downstream of the vertical fins in the blowing direction. The direction of the conditioned air blowing out of the register is changed by rotating the vertical and horizontal fins. In this type of register, a portion of the conditioned air coming from upstream impinges on the vertical and horizontal fins and flows along the surfaces of the vertical and horizontal fins. As a result, a vortex of the conditioned air is generated due to a change in the flow of the conditioned air. This swirl of the conditioned air is one of the causes of noise in the blowing of the register. In the register disclosed in Patent Document 1, noise is suppressed by providing a sawtooth-shaped serration structure at the upstream ends of vertical fins and horizontal fins.

JP-A-11-153342

By the way, for example, electric vehicles and fuel cell vehicles, which have been developed in recent years, do not use a gasoline-fueled engine as a drive source. It is possible. For this reason, the noise generated by the blowing of air from the register is more likely to be heard more prominently by the ears of passengers in an electric vehicle or the like than in a conventional gasoline vehicle. In other words, further noise reduction is desired for the register.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a register capable of reducing noise.

The present application provides a bezel formed with an air outlet, a retainer having a tubular shape communicating with the air outlet and having an air passage for blowing air in a blowing direction, and a retainer provided in the air passage to be rotatable. a plurality of movable fins provided, the plurality of movable fins having a first movable fin and a second movable fin having a shape different from that of the first movable fin, the first movable fin comprising: a plate-like first body portion extending in a cross direction crossing the blowing direction; and provided at each of both ends of the first body portion in the cross direction so that the first body portion is rotatable with respect to the retainer. and a first fin shaft for supporting the second movable fins, the second movable fins being provided on each of the plate-shaped second body portions extending in the cross direction and both ends of the second body portion in the cross direction. and a second fin shaft that rotatably supports the second main body with respect to the retainer, wherein the length of the first main body in the air blowing direction is equal to the length of the second main body in the air blowing direction. Each of the plurality of movable fins is arranged side by side in one direction, the plurality of first movable fins and the plurality of second movable fins are arranged side by side alternately, and the first movable fins are arranged side by side. The movable fin has a first upstream edge portion on the upstream side of the first body portion in the blowing direction, and the first upstream edge portion moves from one end side to the other end side in the intersecting direction, The second movable fin has a shape inclined from the upstream side to the downstream side in the air blowing direction, and the second movable fin has a second upstream edge portion on the upstream side of the second body portion in the air blowing direction. Contrary to the first upstream side edge, the side edge has a shape inclined from the upstream side to the downstream side in the blowing direction as it goes from the other end side to the one end side in the intersecting direction. disclose.

According to the register of the present application, it is possible to suppress the generation of air vortices, reduce the size of the generated vortices, promote the collapse of the generated vortices, and the like, thereby reducing noise.

1 is a perspective view of a register according to a first embodiment; FIG. FIG. 4 is a rear view of the register; FIG. 3 is a cross-sectional view showing a cross section taken along line AA shown in FIG. 2; FIG. 3 is a cross-sectional view showing a cross section taken along line BB shown in FIG. 2; 4 is an exploded perspective view of a register; FIG. FIG. 4 is a front perspective view of a plurality of rear fins; FIG. 4 is a perspective view of a plurality of rear fins as seen from the rear; It is the side view which looked at the center rear fin (1st movable fin) from the left side. It is a front view of a central rear fin (first movable fin). It is the side view which looked at the 2nd movable fin from the left side. It is a front view of a second movable fin. 11A and 11B are a cross-sectional view showing a cross section taken along line CC shown in FIG. 10 and a partially enlarged view thereof; FIG. 11 is a cross-sectional view showing a cross section taken along line DD shown in FIG. 10; FIG. 11 is a front perspective view of a plurality of rear fins of the second embodiment; FIG. 11 is a front perspective view of a plurality of rear fins of the third embodiment; It is the side view which looked at the 1st movable fin of 3rd Embodiment from the left side. It is the side view which looked at the 2nd movable fin of 3rd Embodiment from the left side. FIG. 12 is a front perspective view of a plurality of rear fins of the fourth embodiment; It is the side view which looked at the 1st movable fin of 4th Embodiment from the left side. It is the side view which looked at the 2nd movable fin of 4th Embodiment from the left side. It is the side view which looked at the 2nd movable fin of another example from the left side.

(First embodiment)
Hereinafter, a first embodiment, which is an embodiment in which the register of the present application is embodied in a register 10 used for air conditioning and ventilation of automobiles and the like, will be described with reference to the drawings. In the following description, as shown in FIG. 1, the downstream side of the air blowing direction (that is, the passenger compartment side) in the register 10 of the present embodiment is defined as the front, and the upstream side of the air blowing direction (that is, the air conditioner side) is defined as the front. It will be described as backward. Further, in the following description, the up-down direction and the left-right direction are defined and described using the viewpoint of a user facing the register 10 in front of the register 10 . FIG. 1 shows a state in which the operation knob 45 is placed at the initial position, the front fins 15 are aligned in the horizontal direction, the rear fins 17 are aligned in the vertical direction, and the blowing direction of the conditioned air is not changed (hereinafter referred to as a neutral state). ) is shown.

(Register configuration)
FIG. 1 is a perspective view of the register 10 of this embodiment. FIG. 2 is a rear view of the register 10. FIG. FIG. 3 is a cross-sectional view showing a cross section taken along line AA shown in FIG. FIG. 4 is a cross-sectional view showing a cross section taken along line BB shown in FIG. 3 and 4 show the end faces of some members (the arm 45A, the damper plate 19, etc.). The register 10 of this embodiment is, for example, a device that is installed in an instrument panel that is arranged in front of a passenger compartment of an automobile or the like, and blows conditioned air adjusted by an air conditioner into the passenger compartment. As shown in FIGS. 1 to 4, the register 10 includes a retainer 11, a bezel 13, a front fin 15, a rear fin 17, a damper plate 19, and the like.

The retainer 11 has a tubular shape extending in the front-rear direction. An air passage 21 is formed inside the retainer 11 (see FIG. 3). A rear end portion of the retainer 11 is connected to an air conditioner (not shown) via an air passage 21 . The bezel 13 is formed with an elongated air outlet 31 elongated in the left-right direction. The retainer 11 has a tubular shape communicating with the air outlet 31 of the bezel 13 and blows conditioned air in a blowing direction 22 toward the air outlet 31 . The air passage 21 (retainer 11) has a cross-sectional shape taken along a plane orthogonal to the air blowing direction 22 and has a substantially rectangular shape elongated in the left-right direction.

The bezel 13 is a member arranged on the front surface of the retainer 11 . The bezel 13 is attached to the front (downstream) opening of the retainer 11 . The bezel 13 is a frame-shaped member having an air outlet 31 having a size corresponding to the downstream opening of the retainer 11 and covering the periphery of the downstream opening of the retainer 11 from the front. The bezel 13 is fixed to the retainer 11 by engaging the engaged portion 32 with the engaging portion 24 of the retainer 11 . The air outlet 31 is a hole through which the conditioned air that is adjusted by the air conditioner and flows through the air passage 21 is blown out toward the outside of the register 10 (toward a user such as a passenger). The air outlet 31 has an elongated shape that is long in the horizontal direction and short in the vertical direction.

(Configuration of front fin 15)
The register 10 has a plurality of (three in this embodiment) front fins 15 . The three front fins 15 have substantially the same shape. The plurality of front fins 15 are arranged inside the air outlet 31 of the bezel 13 (the connecting portion between the bezel 13 and the retainer 11). The front fin 15 has a plate shape elongated in the left-right direction. The plane of the front fin 15 is substantially parallel to the front-rear direction and the left-right direction in the neutral state. The front fin 15 has fin shafts 33 (see FIG. 1) formed at both ends in the left-right direction.

FIG. 5 shows an exploded perspective view of the register 10 excluding some members (retainer 11, operation dial 49, etc.). As shown in FIG. 5, bearing members 41 are provided on both sides of the front fin 15 in the left-right direction. The pair of bearing members 41 rotatably hold the fin shafts 33 (see FIG. 1) of the front fins 15 . The plurality of front fins 15 are held by a pair of bearing members 41 so as to be vertically rotatable. Also, the plurality of front fins 15 are connected to each other by link members 43 . Therefore, when an arbitrary front fin 15 among the plurality of front fins 15 is rotated in the vertical direction, the other front fins 15 are also rotated in the vertical direction.

Of the three front fins 15, the middle front fin 15 in the vertical direction (hereinafter sometimes referred to as front fin 15A) is provided with an engaging portion 15B at its right end. The engaging portion 15B is inserted into the insertion opening 41A of the bearing member 41. As shown in FIG. As a result, the range of vertical rotation of the front fins 15 is restricted within a predetermined range. An operation knob 45 is attached to the central front fin 15A. The operation knob 45 has a substantially box-like shape that is thin in the vertical direction, and the front fin 15A is inserted into an insertion opening penetrating in the horizontal direction, so that the front fin 15A can be slid in the horizontal direction. At the upstream edge of the front fin 15A, a restricting portion 35 is formed by recessing the front fin 15A inward (upstream) (see FIG. 4). The operating knob 45 engages with the restricting portion 35 of the front fin 15A to restrict the lateral sliding range within a predetermined range.

In the register 10 of the present embodiment, the front fin 15A rotates vertically by operating the operation knob 45 in the vertical direction. The front fins 15 other than the front fins 15A rotate vertically in conjunction with the front fins 15A by the link member 43 . Accordingly, a passenger or the like can adjust the blowing direction of the conditioned air blown from the air blowing port 31 in the vertical direction by operating the operation knob 45 .

(Configuration of rear fin 17)
As shown in FIG. 4 , a plurality of (seven in this embodiment) rear fins 17 are arranged upstream of the front fins 15 and inside the retainer 11 . Each of the plurality of rear fins 17 extends vertically and has a substantially plate shape having a plane substantially parallel to the vertical direction and the front-rear direction. In the neutral state, each of the rear fins 17 is arranged parallel to each other with a pair of flat surfaces facing each other in the thickness direction facing each other in the left-right direction.

Among the plurality of rear fins 17 , the rear fin 17 arranged in the center in the left-right direction is formed with a link shaft 51 that is connected to an arm 45</b>A provided at the upstream portion of the operation knob 45 . The arm 45A is formed so as to extend in two directions toward the rear side, and is provided so as to sandwich the link shaft 51 from the left and right directions. As a result, the center rear fin 17 receives a laterally rotating force via the arm 45A and the link shaft 51 in response to the laterally sliding movement of the operation knob 45 . The detailed shape of the rear fins 17 will be described later.

The plurality of rear fins 17 are rotatably held by the retainer 11 and are rotatable in the left-right direction. Further, the plurality of rear fins 17 are connected to each other by link members 47 (see FIG. 5). As a result, when the center rear fin 17 rotates in the left-right direction along with the sliding movement of the operation knob 45, the other rear fins 17 rotate in the left-right direction in conjunction with the center rear fin 17 . As a result, the direction of the conditioned air blown out from the air outlet 31 is adjusted in the horizontal direction.

(Configuration of damper plate 19)
As shown in FIGS. 4 and 5 , a damper plate 19 is provided on the rear side (upstream side) of the rear fins 17 and inside the air passage 21 of the retainer 11 . The damper plate 19 has a plate shape elongated in the left-right direction, and is held by the retainer 11 so as to be rotatable in the up-down direction. The damper plate 19 is connected to an operation dial 49 provided on the bezel 13 and rotates up and down as the operation dial 49 rotates. The damper plate 19 rotates to open and close the blowing passage 21 to supply or stop conditioned air.

(Detailed configuration of rear fin 17)
Next, a detailed configuration of the rear fin 17 will be described. As shown in FIGS. 6 and 7 , the rear fin 17 of this embodiment has three first movable fins 53 and four second movable fins 54 . The first and second movable fins 53, 54 are alternately arranged in the left-right direction. The central first movable fin 53 in the left-right direction has the same configuration as the other first movable fins 53 except for the mechanism (link shaft 51 ) connected to the operation knob 45 . The second movable fin 54 has the same structure as the first movable fin 53 except for the structure of the edge on the upstream side. Therefore, in the following description, the central first movable fin 53 in the horizontal direction will be described first. In the description of the second movable fin 54, the description of the same configuration as that of the first movable fin 53 will be omitted as appropriate. Further, when the first and second movable fins 53 and 54 are collectively described, they will be referred to as the rear fin 17 for description.

As shown in FIGS. 8 and 9 , the central first movable fin 53 in the left-right direction includes a first body portion 57 and a pair of first fin shafts 58 . The first body portion 57 has a substantially plate shape elongated in the vertical direction in FIGS. 8 and 9 . The vertical direction in FIGS. 8 and 9 is a direction along an axial direction 56 (an example of an intersecting direction) of a pair of first fin shafts 58, which will be described later. Therefore, the first main body portion 57 has a plate shape elongated in the axial direction 56 . 3, the axial direction 56 of this embodiment is inclined at a predetermined angle with respect to the front-rear direction (airflow direction 22). However, the axial direction 56 may be a direction orthogonal to the blowing direction 22 (for example, the vertical direction).

A pair of first fin shafts 58 are provided at both ends of the first body portion 57 in the axial direction 56 . The first fin shaft 58 protrudes outward from the end surface of the first body portion 57 . The upper first fin shaft 58 shown in FIGS. 8 and 9 is rotatably held by a bearing member 61 shown in FIG. The lower first fin shaft 58 shown in FIGS. 8 and 9 is rotatably held by a bearing member 62 shown in FIG. The bearing members 61 and 62 are attached to the retainer 11 and fixed in position. As a result, the first movable fin 53 is rotatably held on the first fin shaft 58 by the retainer 11 via the bearing members 61 and 62 and is rotatable about the axial direction 56 .

A through hole 59 is formed in the central first movable fin 53 so as to penetrate in the left-right direction (thickness direction of the first body portion 57). The through hole 59 has, for example, an elliptical shape elongated in the axial direction 56 . The link shaft 51 connects downstream edges of the through holes 59 . The operation knob 45 sandwiches the link shaft 51 from both sides in the left-right direction by the arms 45A, and connects the front fin 15A and the first movable fin 53 in the center. The central first movable fin 53 suppresses interference with the arm 45A by inserting the arm 45A into the through hole 59 when the operation knob 45 slides. Both ends of the link shaft 51 in the axial direction 56 are provided with stoppers 51A for restricting vertical movement of the arm 45A.

8, the first upstream edge portion 57A of the first body portion 57 extends from one end side (lower end side in FIG. 8) to the other end side (upper end side in FIG. 8) in the axial direction 56. Accordingly, it has a shape inclined from the upstream side to the downstream side in the blowing direction 22 (see FIG. 3). The first upstream edge portion 57A is formed with a surface inclined at a constant inclination angle. Therefore, the distance L1 between one end of the first upstream edge portion 57A (lower end in FIG. 8) and the axial center of the first fin shaft 58 is the other end of the first upstream edge portion 57A (upper end in FIG. 8). and the axial center of the first fin shaft 58 is longer than the distance L2. The distance L1 is, for example, approximately 1.5 times longer than the distance L2.

A link shaft 63 is formed between the lower first fin shaft 58 in FIG. 8 and the first upstream edge portion 57A. The plurality of rear fins 17 (the first movable fins 53 and the second movable fins 54) are rotated in conjunction with each other by inserting the link shaft 63 into the link member 47 (see FIG. 5).

Further, the first body portion 57 has a first surface 64 and a second surface 65 facing each other in the thickness direction (the direction perpendicular to the plane of FIG. 8). A plurality of grooves 67 are formed in each of the left first surface 64 and the right second surface 65 . Details of the groove portion 67 will be described later. The central first movable fin 53 and the other first movable fins 53 have the same configuration as shown in FIGS. A first upstream edge 57A is formed.

Next, the second movable fins 54 are described. As shown in FIGS. 10 and 11 , the second movable fin 54 has a second body portion 71 and a pair of second fin shafts 72 . The second body portion 71 has a plate shape elongated in the axial direction 56 . Each of the pair of second fin shafts 72 is rotatably held by bearing members 61 and 62 (see FIG. 5). In the neutral state, the first movable fin 53 and the second movable fin 54 are arranged side by side in the left-right direction (an example of one direction) with their planes facing each other in the left-right direction (see FIGS. 6 and 7). . The second fin shafts 72 of the second movable fins 54 and the first fin shafts 58 of the first movable fins 53 are parallel to each other and arranged side by side in the left-right direction.

The second upstream edge portion 71A of the second body portion 71 is located on the upper end side in FIG. 10 (in the axial direction 56 in FIG. 10 from the other end side (upper end side) to the lower end side in FIG. 10 (one end side in FIG. 8). The distance between one end of the second upstream edge portion 71A (lower end in FIG. 10) and the axial center of the second fin shaft 72 is a distance L2. Also, the distance between the other end of the second upstream edge portion 71A (upper end in FIG. 10) and the center of the second fin shaft 72 is the distance L1. Therefore, the second upstream edge portion 71A has a shape symmetrical (opposite in phase) with the first upstream edge portion 57A of the first movable fin 53, and is formed with an inclined surface. Note that the second upstream edge portion 71A is not limited to a shape symmetrical with the first upstream edge portion 57A, and may be formed with a different angle of inclination.

Therefore, the length of the first body portion 57 in the blowing direction 22 of the present embodiment is different from the length of the second body portion 71 in the blowing direction. More specifically, at the same position in the axial direction 56, the length of the first main body portion 57 in the short direction (horizontal direction in FIG. 8) and the length of the second main body portion 71 in the short direction They are different (symmetrical) from each other except for the midpoint position at 56 .

In addition, the second body portion 71 has a first surface 73 and a second surface 74 facing each other in the thickness direction (the direction perpendicular to the plane of FIG. 8). A plurality of grooves 67 are formed in each of the first surface 73 on the left side and the second surface 74 on the right side. Each of the plurality of grooves 67 is formed by recessing the second main body 71 in the thickness direction. The groove portion 67 extends in the blowing direction 22 , more specifically along a direction orthogonal to the axial direction 56 .

The plurality of grooves 67 are arranged side by side in the axial direction 56 . More specifically, two grooves 67 that are adjacent in the axial direction 56 are arranged adjacent to each other with the rib 75 interposed therebetween. As shown in the enlarged view of FIG. 12, the groove portion 67 is formed by inner walls 75A of ribs 75 adjacent in the axial direction 56 and a bottom surface 76 sandwiched between the pair of inner walls 75A. The groove portion 67 has a constant groove width, that is, a constant distance between the pair of inner walls 75A, and extends in a direction perpendicular to the axial direction 56 .

As shown in FIG. 12, the grooves 67 of this embodiment are formed at different positions on the first surface 73 and the second surface 74 . The plurality of grooves 67 on the first surface 73 are provided at positions shifted in the axial direction 56 from the plurality of grooves 67 on the second surface 74 . For example, the position of the rib 75 of the first surface 73 in the axial direction 56 and the position of the bottom surface 76 of the second surface 74 in the axial direction 56 are opposed in the thickness direction. In other words, the ribs 75 of the first surface 73 are provided at positions between adjacent ribs 75 of the second surface 74 in the axial direction 56 . As a result, by shifting the position of the groove portion 67 , the groove portion 67 can suppress the generation of eddies in the conditioned air while ensuring the thickness of the second main body portion 71 .

Further, as shown in FIG. 13, the bottom surfaces 76 of the first and second surfaces 73 and 74 are formed along a direction perpendicular to the axial direction 56 (horizontal direction in FIG. 10) and are planes parallel to each other. formed. On the other hand, the thickness of the rib 75 in the thickness direction gradually increases from the upstream side (second upstream edge portion 71A side) toward the position of the second fin shaft 72 . In addition, the thickness of the rib 75 gradually decreases from the position of the second fin shaft 72 toward the edge on the downstream side. Therefore, the thickness of the rib 75 is the thickest at the position of the second fin shaft 72 . As a result, the thickness of the second body portion 71 around the second fin shafts 72 can be ensured while suppressing an increase in the thickness of the second body portion 71 . The rigidity of the second body portion 71 is increased, and the second fin shaft 72 can be stably held. In addition, in the above description, the groove portion 67 of the second movable fin 54 has been described in detail. However, the groove portion 67 of the first movable fin 53 has the same configuration as the groove portion 67 of the second movable fin 54 . Specifically, as shown in FIGS. 6 and 7, the first movable fins 53 other than the central first movable fin 53 are formed with a plurality of grooves 67 on the entire surfaces of the first and second surfaces 64 and 65. It is A plurality of grooves 67 are formed in a portion of the central first movable fin 53 excluding the link shaft 51 and the through hole 59 . Therefore, the first movable fins 53 can reduce noise due to the grooves 67 in the same manner as the second movable fins 54 .

Incidentally, in the above embodiment, the rear fin 17 is an example of a movable fin. Axial direction 56 is an example of a cross direction.

As described above, according to the above-described first embodiment, the following effects are obtained.
(1) The register 10 of the present embodiment has a bezel 13 formed with an air outlet 31 and a cylindrical shape communicating with the air outlet 31, and blows conditioned air (an example of air) in the air blowing direction 22. It comprises a retainer 11 having a passage 21 and a plurality of rear fins 17 provided in the air passage 21 and rotatably provided. The plurality of rear fins 17 has first movable fins 53 and second movable fins 54 having a shape different from that of the first movable fins 53 . The first movable fins 53 have a plate-like first body portion 57 extending in an axial direction 56 that intersects with the blowing direction 22 , and are provided at both ends of the first body portion 57 in the axial direction 56 . and a first fin shaft 58 that rotatably supports the retainer 11 . Similarly, the second movable fin 54 has a second body portion 71 and a second fin shaft 72 . The length of the first body portion 57 in the blowing direction 22 is different from the length of the second body portion 71 in the blowing direction 22 (see FIG. 6).

Here, as shown in FIG. 3 , part of the conditioned air flowing from upstream collides with the rear fins 17 and the front fins 15 and flows along the surfaces of the rear fins 17 and the front fins 15 . As a result, a vortex 78 of the conditioned air is generated due to the change in the flow of the conditioned air. This vortex 78 of the conditioned air is one of the causes of noise during blowing. The plurality of first movable fins 53 and the second movable fins 54 of the first embodiment have different lengths in the blowing direction 22, more specifically, lengths along the direction perpendicular to the axial direction 56. there is The conditioned air flowing from upstream collides, splits, and merges at different positions in the blowing direction 22 between the first movable fin 53 (first main body portion 57) and the second movable fin 54 (second main body portion 71). equal. Therefore, the air flow generated by the first body portion 57 and the vortex 78 generated by the air flow are generated differently from the second body portion 71 . As a result, it is possible to suppress the generation of the vortex 78, reduce the size of the generated vortex 78, promote the collapse of the vortex 78 after generation, and the like, thereby reducing noise.

(2) Each of the plurality of rear fins 17 is arranged side by side in the left-right direction (an example of one direction), and the first movable fins 53 and the second movable fins 54 are arranged alternately ( See Figure 6). According to this, the first movable fins 53 and the second movable fins 54 having different shapes are arranged alternately in one direction. Two movable fins 53 and 54 are arranged alternately. As a result, it is possible to more evenly suppress the generation of the vortices 78 in the direction (horizontal direction) in which the first and second movable fins 53 and 54 are arranged, and to more effectively reduce noise.

(3) In addition, the first movable fin 53 has a first upstream edge portion 57A on the upstream side of the first body portion 57 in the blowing direction 22 . The first upstream edge portion 57A has a shape that inclines from the upstream side to the downstream side in the blowing direction 22 as it goes from one end side to the other end side in the axial direction 56 . (See Figure 8). According to this, if the position in the axial direction 56 is different, the conditioned air flowing from the upstream collides with the first upstream edge portion 57A at different positions in the blowing direction 22 . Further, the second upstream edge portion 71A of the second movable fin 54 has a shape symmetrical with the first upstream edge portion 57A (see FIG. 10). Thereby, the generation of the vortex 78 can be effectively suppressed on the upstream side of the first and second movable fins 53 and 54 .

(4) In addition, the first body portion 57 of the first movable fin 53 has a first surface 64 and a second surface 65 facing each other in the thickness direction. A plurality of grooves 67 are formed in each of the first and second surfaces 64 and 65 . Each of the plurality of grooves 67 is formed by recessing the first main body 57 in the thickness direction, extends in the blowing direction 22 , and is arranged side by side in the axial direction 56 . The plurality of grooves 67 are provided at positions shifted in the axial direction 56 from the plurality of grooves 67 of the second surface 65 (see FIG. 12).

According to this, on both surfaces of the first body portion 57, a plurality of groove portions 67 extending in the blowing direction 22 (in the embodiment, a direction perpendicular to the axial direction 56) and arranged side by side in the axial direction 56 are formed. . The conditioned air that has flowed from the upstream flows differently between the portion with the grooves 67 and the portion without the grooves (the ribs 75 and the like). Also, part of the conditioned air flows along each of the plurality of grooves 67 to generate fine eddies 78 . Further, by forming the grooves 67 of the first surface 64 and the grooves 67 of the second surface 65 at different positions in the axial direction 56, the vortices 78 generated on each surface of the first main body 57 can be controlled. Different generation modes are possible. As a result, on the downstream side of the first movable fins 53, the generation of the vortex 78 itself can be suppressed and the collapse of the generated vortex 78 can be promoted, thereby effectively reducing noise. In particular, in this embodiment, the grooves 67 are formed in all the rear fins 17 including the second movable fins 54 . According to the verification by the applicant of the present application, the rear fin 17 having the symmetrical first and second upstream edge portions 57A and 71A and the groove portion 67 has a noise reduction effect of 1 dB or more compared to the rear fin 17 which is not formed. I was able to confirm something.

Further, when the grooves 67 are formed, the manufacturing cost can be expected to be reduced compared to the recesses 81 (dimples) of the fourth embodiment shown in FIG. 18 which will be described later. More specifically, in a first movable fin 53 having a recessed portion 81 according to a fourth embodiment, which will be described later, if the recessed portion 81 is undercut when forming the rear fin 17 by injection molding of resin, It is necessary to open the mold in a direction orthogonal to the first surface 64 as well as the mold that opens in the direction to which it is drawn (opens in the front-rear direction). On the other hand, for example, the groove portion 67 is formed by a groove along a direction perpendicular to the axial direction 56 . Therefore, when the rear fins 17 are formed by injection molding of resin, it is possible to perform molding using only a mold that opens in a direction orthogonal to the axial direction 56 . As a result, the number of molds can be reduced, and further, so-called in-mold assembly, in which the members (rear fins 17, etc.) are assembled within the mold, can be achieved, thereby reducing the manufacturing cost.

(Second embodiment)
In the above embodiment, the rear fins 17 are provided with the grooves 67, but they may not be provided. For example, as shown in the rear fin 17 of the second embodiment in FIG. 14, the first movable fin 53 and the second movable fin 54 may be configured without the groove portion 67 . Alternatively, the groove portion 67 may be formed in either the first movable fin 53 or the second movable fin 54 . Even with such a configuration, the shapes of the first and second upstream edge portions 57A and 71A are changed, and the lengths of the first and second main body portions 57 and 71 in the direction orthogonal to the axial direction 56 and the blowing direction 22 are adjusted. By changing , the noise can be reduced.

(Third embodiment)
Further, in the above-described embodiment, the lengths of the first and second main body portions 57 and 71 are changed by inclining the first and second upstream edge portions 57A and 71A, but the present invention is not limited to this. For example, as shown in the third embodiment of FIGS. 15 to 17, the first and second upstream edge portions 57A and 71A may be formed in planes parallel to the axial direction 56. FIG. The rear fin 17A of the third embodiment has a substantially rectangular plate shape elongated in the axial direction 56 . The first and second upstream edge portions 57A, 71A are formed along the axial direction 56. As shown in FIG. A distance L3 (see FIG. 16) between the first upstream edge portion 57A and the axial center of the first fin shaft 58 is constant at any position in the axial direction 56. As shown in FIG. Further, the distance L4 (see FIG. 17) between the second upstream edge portion 71A and the axial center of the second fin shaft 72 is constant at any position in the axial direction 56. As shown in FIG. A distance L4 of the second movable fins 54 is shorter than a distance L3 of the first movable fins 53 . That is, the first main body portion 57 of the first movable fin 53 is longer than the second main body portion 71 of the second movable fin 54 in the direction orthogonal to the axial direction 56 . The distance L4 is, for example, the same length as the distance L2 (see FIG. 8) in the first embodiment. Also, the distance L3 is, for example, approximately 1.1 times as long as the distance L4. In the rear fin 17A of such a third embodiment as well, the effect of reducing noise can be obtained as in the case of the above-described first embodiment.

Moreover, the above-described third embodiment has the following effects.
Each of the plurality of rear fins 17A of the third embodiment are arranged side by side in the left-right direction. The first fin shaft 58 and the second fin shaft 72 are parallel to each other and arranged side by side in the left-right direction (see FIG. 15). The distance L3 (see FIG. 16) from the first fin shaft 58 to the first upstream edge 57A is compared to the distance L4 (see FIG. 17) from the second fin shaft 72 to the second upstream edge 71A. is getting longer. According to this, the conditioned air that has flowed from the upstream is located upstream in the blowing direction 22 from the first movable fin 53 (second 1 upstream edge 57A). Thereby, the generation of the vortex 78 can be effectively suppressed on the upstream side of the first and second movable fins 53 and 54 .

(Fourth embodiment)
In the first embodiment described above, the grooves 67 change the flow of the conditioned air that flows on the surfaces of the first surface 64 and the second surface 65 to suppress the generation of the vortices 78. However, the present invention is not limited to this. do not have. For example, as in the fourth embodiment shown in FIGS. 18 to 20, recesses 81 may be formed on the surface of the rear fin 17B. The rear fins 17B of the fourth embodiment have different lengths L3 and L4 along the direction perpendicular to the axial direction 56, as in the third embodiment.

A plurality of circular recesses 81 are formed in the first surfaces 64, 73 and the second surfaces 65, 74 (see FIGS. 9 and 11) of the rear fin 17B. The plurality of recesses 81 are formed by recessing the first movable fins 53 and the second movable fins 54 in the thickness direction, and form a recessed shape. A plurality of recesses 81 are formed on the entire surfaces of the first surfaces 64 and 73 and the second surfaces 65 and 74 . A plurality of recesses 81 are formed adjacent to each other with a slight gap therebetween. In the rear fin 17B of such a fourth embodiment as well, the effect of reducing noise can be obtained in the same manner as in the above-described first embodiment.

Moreover, in the above-described fourth embodiment, the following effects are obtained.
A plurality of recesses 81 are formed in each of the first surfaces 64, 73 and the second surfaces 65, 74 of the fourth embodiment. The plurality of recesses 81 are circular in plan view of the first surfaces 64, 73 and the second surfaces 65, 74, are formed in the entirety of the first surfaces 64, 73 and the second surfaces 65, 74, and are adjacent to each other. formed. According to this, a plurality of circular concave portions 81 (dimples) are formed adjacent to each other on both surfaces of the first and second body portions 57 and 71 . The flow of the conditioned air that is about to flow along the first surfaces 64 and 73 and the second surfaces 65 and 74 is changed by the recesses 81 . As a result, it is possible to suppress the generation of the vortex 78 on the downstream side of the first and second movable fins 53 and 54 and promote the collapse of the generated vortex 78, thereby effectively reducing noise.

In addition, the groove portion 67 is not limited to a circular shape, and may have other shapes such as an elliptical shape and a square shape. Further, for example, the grooves 67 may be formed at discrete positions (at sparse positions) on the first surfaces 64 and 73 . Further, for example, the recessed portion 81 may be formed only in either one of the first main body portion 57 and the second main body portion 71 . Alternatively, for example, the recess 81 may be formed only on either the first surface 64 or the second surface 65 .

It should be noted that the present application is not limited to the above-described embodiments, and of course, various improvements and modifications are possible without departing from the gist of the present application.
For example, the movable fin of the present application may be the front fin 15 . For example, the lengths of the front fins 15 in the blowing direction 22 may be different from each other. For example, the upstream edge of the front fin 15 may be inclined.
Also, the register 10 may not have the front fins 15 .
Further, the number, shape, etc. of members included in the register 10 described above are examples, and can be changed as appropriate. For example, the register 10 may have one front fin 15 or four or more front fins 15 . Also, the register 10 may have two rear fins 17 or eight or more rear fins 17 .

Further, as shown in FIG. 21, in the second movable fin 54 having the concave portion 81, the second upstream side edge portion 71A may be formed to have an inclined shape as in the first embodiment. As shown in FIG. 21, a concave portion 81 may be formed in accordance with the inclined shape of the second upstream edge portion 71A. As a result, the synergistic effect of the inclined second upstream edge portion 71A and the recessed portion 81 makes it possible to further reduce noise.
Also, the first movable fins 53 and the second movable fins 54 may not be arranged alternately.
Further, the register of the present application is not limited to devices used in automobiles, and may be devices used for air conditioning or ventilation in houses, for example.

10 register, 11 retainer, 13 bezel, 15 front fin, 21 airflow path, 22 airflow direction, 31 air outlet, 17, 17A, 17B rear fins (movable fins), 31 air outlet, 56 axial direction (cross direction) , 57 first main body 57A first upstream edge 58 first fin shaft 64, 73 first surface 65, 74 second surface 67 groove 71 second main body 71A second upstream edge part, 72 second fin shaft, 81 recess, L3, L4 distance.

Claims (4)

a bezel having an air outlet;
a retainer having a tubular shape communicating with the air outlet and having an air passage for blowing air in a blowing direction;
a plurality of movable fins provided in the air passage and rotatably provided;
with
The plurality of movable fins are
a plurality of first movable fins;
a plurality of second movable fins different in shape from the first movable fins;
has
The first movable fin is
a plate-like first body portion extending in a cross direction crossing the blowing direction; and provided at each of both ends of the first body portion in the cross direction so that the first body portion is rotatable with respect to the retainer. a supporting first fin shaft;
has
The second movable fin is
a plate-like second body portion extending in the cross direction; and second fins provided at both ends of the second body portion in the cross direction to support the second body portion rotatably with respect to the retainer. an axis;
has
The length of the first main body in the blowing direction is
different from the length of the second main body in the blowing direction,
each of the plurality of movable fins,
arranged side by side in one direction, the plurality of first movable fins and the plurality of second movable fins are arranged side by side alternately,
The first movable fin is
having a first upstream edge on the upstream side of the first main body in the blowing direction;
The first upstream edge is
having a shape that inclines from the upstream side to the downstream side in the blowing direction as it goes from one end side to the other end side in the crossing direction,
The second movable fin is
having a second upstream edge on the upstream side of the second main body in the blowing direction;
The second upstream edge is
Contrary to the first upstream edge portion, the register has a shape inclined from the upstream side to the downstream side in the blowing direction as it goes from the other end side to the one end side in the intersecting direction. each of the plurality of movable fins,
arranged side by side in one direction,
The first fin shaft and the second fin shaft are
are arranged parallel to each other and side by side in the one direction,
The first movable fin is
having a first upstream edge on the upstream side of the first main body in the blowing direction;
The second movable fin is
having a second upstream edge on the upstream side of the second main body in the blowing direction;
The distance from the first fin axis to the first upstream edge is
2. The register of claim 1 , wherein the distance from said second fin axis to said second upstream edge is long. The first body portion of the first movable fin,
Having a first surface and a second surface facing each other in the thickness direction,
On each of the first surface and the second surface,
A plurality of grooves are formed,
each of the plurality of grooves,
formed by recessing the first main body in the thickness direction, extending in the blowing direction, and arranged side by side in the cross direction;
The plurality of grooves on the first surface are
3. The register according to claim 1, wherein said register is provided at a position shifted in said intersecting direction from said plurality of grooves of said second surface. The first body portion of the first movable fin,
Having a first surface and a second surface facing each other in the thickness direction,
On each of the first surface and the second surface,
A plurality of recesses are formed,
The plurality of recesses are
4. The polarizer according to any one of claims 1 to 3 , which has a circular shape in plan view of the first surface and the second surface, is formed on the entirety of the first surface and the second surface, and is formed adjacent to each other. A register according to claim 1.

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