JP2007131055A - Register for adjusting air blow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a register for adjusting an air blow capable of giving a stable operation load to an operation knob and sufficiently adjusting an air blow direction without play of an operation knob for every product. <P>SOLUTION: This operation knob 6 comprises a knob body 60 covering a front part of a lateral fin 31 of a front movable louver, a knob cover 61 covering and fitted with the outside of the knob body 60, and a knob gear part 62 fitted with back faces of the knob body 60 and the knob cover 61 and having gear parts. A rubber elastic body 63 is fitted with the knob body 60 in contact with the front of the lateral fin 31, and a leaf spring 69 is arranged between the rubber elastic body 63 and the knob cover 61 to energize the rubber elastic body 63 toward the lateral fin 31. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air blowing adjustment register used for ventilation and air conditioning air outlets of automobile interiors, and in particular, an operation knob is slidably fitted on a fin of a front movable louver, and the operation knob is used. The present invention relates to an air blowing adjustment register for adjusting a wind direction.

  Conventionally, as this type of air blowing adjustment register, a laterally movable louver and a longitudinally movable louver are arranged back and forth in a bezel that forms a ventilation path, and the fins at the center of the laterally movable louver located in front are An air blowing adjustment register in which an operation knob (grip) is movably attached is known from Patent Document 1 below.

  In this conventional air blowing adjustment register, the operation knob is slidably fitted in the axial direction (lateral direction) on the fin at the center of the laterally movable louver, and together with the fin of the laterally movable louver. The vertical axis of the longitudinally movable louver, which is provided so as to be pivotable up and down, has an engaging part at the tip of the operation knob, and the engaging part is located at the rear (an axis deviated from the rotational axis of the fin) ). When adjusting the wind direction to the left or right, slide the operation knob to the left or right on the fins of the laterally movable louver, change the direction of the subsequent vertically movable louver to the left and right, and adjust the wind direction to the upper or lower side. In this case, the direction of the wind is adjusted by rotating the operation knob up or down together with the fins of the laterally movable louver.

However, this type of conventional air blow adjustment register operating knob is provided with protruding arm parts on both sides of the rear of the knob body in order to prevent rattling and provide an appropriate operating load when sliding in the lateral direction. The spring member for pressing the arm portion against the laterally movable louver is provided at the rear portion of the knob body. This complicates the structure of the operation knob, increases the number of parts, and further exposes the rear part of the knob body. There was a problem that the appearance of the register deteriorated.
Japanese Utility Model Publication No. 4-82645 JP 2003-276428 A

  Therefore, the present applicant has proposed a register operating knob having a structure in which a rubber-like elastic body is disposed inside a knob body according to the above-mentioned Patent Document 2. The operation knob of this register presses the rubber-like elastic body against the front part of the lateral fin to prevent rattling when the operation knob slides and to apply an appropriate operation load. However, since the operation knob of this register allows the rubber-like elastic body to slide in contact with the front portion of the horizontal fin, a good operation load can be obtained, but the dimensions for each product (for example, the inner dimensions of the operation knob, When variations occur in the width dimension, etc., depending on the product, there is a problem that the operation knob is slid when the operation knob slides and the operation load becomes unstable.

  The present invention has been made in view of the above points, and does not cause backlash to the operation knob for each product, and applies a stable operation load to the operation knob to satisfactorily adjust the air blowing direction. An object of the present invention is to provide an air blowing adjustment register that can perform the above-described operation.

  To achieve the above object, the air blow adjustment register of the present invention is an air blow adjustment register in which an operation knob is slidably fitted to the fin of the front movable louver, and the air direction is adjusted by the operation knob. A rubber-like elastic body is disposed in contact with the fin in the operation knob, and a leaf spring for urging the rubber-like elastic body toward the fin is provided in the operation knob.

  Here, as in claim 2, the operation knob includes a knob body that covers the front surface of the fin of the front movable louver, a knob cover that is fitted to cover the outside of the knob body, the knob body, and the knob cover. And a knob gear portion having a gear portion, and the rubber-like elastic body is fitted to the knob body so as to come into contact with the front portion of the fin, A leaf spring may be disposed between the inner surface of the knob cover and biasing the rubber-like elastic body toward the fin.

  Further, according to a third aspect of the present invention, the rubber-like elastic body is formed by providing a portion in contact with the front portion of the fin on the back side of the rectangular flat portion, and in a rectangular hole provided in the central portion of the knob body. The part is inserted and mounted, and the leaf spring is formed by bending both sides into a substantially U shape, and is inserted between the rectangular flat part of the rubber-like elastic body and the inner surface of the knob cover. It can be configured.

  According to a fourth aspect of the present invention, the leaf spring is formed by forming a flat portion at both ends of a belt-like leaf spring material and providing a central portion having an inclined portion from the flat portion to the central portion at the center. Can do.

  In the air blow adjustment register having such a configuration, when the operation knob is swung on the fin, each fin of the front movable louver rotates and changes its direction, and the direction of the air flow in the ventilation path changes the operation knob. It is adjusted according to the operation rotation angle. When the operation knob is slid on the fin of the front movable louver, the operation knob slides on the fin, and the knob gear portion is linked to the fin of the rear rear movable louver via the fan-shaped gear on the back side. Thus, each fin of the rear movable louver rotates and changes its direction, and the direction of the air flow in the ventilation path is adjusted according to the sliding operation width of the operation knob.

  During the swing operation of the operation knob or the sliding operation on the fin, the rubber-like elastic body in the knob body slides while pushing the front part of the fin. For this reason, moderate sliding resistance is produced between the fin and the rubber-like elastic body, and the operation knob can be slid well with an appropriate operation load.

  Also, if the fin width dimension or the inner shape of the knob body varies from product to product, the dimensional variation will be absorbed by the leaf spring, so the operating knob will interfere strongly with the fin or rattle. No, a stable operating load can be applied to all products.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an air blowing adjustment register, and FIG. 2 is a cross-sectional view thereof. 3 shows a plan view of the lateral fin 31 of the front movable louver 3, FIG. 4 shows an enlarged cross-sectional view of the operation knob, and FIG. 5 shows an exploded perspective view of the operation knob 6.

  In these drawings, reference numeral 1 denotes a bezel having an air outlet 11 formed on the front surface, and a fitting portion for connecting to a retainer 2 described later is provided on the inner side (back side) of the bezel 1, and the fitting portion. The retainer 2 is fitted to and connected to. Bearing holes for horizontal fins are formed at predetermined intervals on the left and right side walls inside the air outlet 11 of the bezel 1, and further, a damper knob opening is formed on the left side of the front surface of the bezel 1, and a damper knob 53 is disposed there. Is done.

  The retainer 2 is formed in a substantially rectangular duct shape, and a ventilation path 21 is formed therein, and bearing holes for vertical fins are formed at predetermined intervals on the upper wall and lower wall of the front edge portion. Furthermore, damper shaft holes for dampers are provided on both side walls of the rear part in the ventilation path 21, and the rotation shaft 51 of the damper 5 is fitted therein.

  The front movable louver 3 is configured by arranging a plurality of horizontal fins 31 so as to be rotatable at regular intervals, and connecting the rotation shafts 32 to each other by a link bar 36 via a crank 35. As shown in FIG. 2, the rotation shafts 32 on both sides of each lateral fin 31 are inserted into bearing holes on both side walls of the bezel 1 and are rotatably supported. Further, a crank 35 is connected to the tip of one rotating shaft 32 of each horizontal fin 31, and each crank 35 is connected to each other by a link bar 36, thereby constituting a link mechanism for rotating the front movable louver 3. . The crank 35 and the link bar 36 of the link mechanism are disposed outside the bezel 1.

  An operation knob 6 to be described later is attached to a specific lateral fin 31 of the front movable louver 3, and the lateral fin 31 to which the operation knob 6 is attached is arranged vertically on the front side as shown in FIG. 5. The ridge 34 projects in the longitudinal direction, and a guide groove 33 having a triangular cross section is formed on the back surface portion along the longitudinal direction. The guide groove 33 is provided for sliding guide of the operation knob 6. However, since the guide groove 33 is a concave groove, it is difficult to visually recognize from the front, and deterioration of appearance can be prevented.

  As shown in FIG. 2, the rear movable louver 4 has a plurality of vertical fins 41 arranged vertically in the retainer 2 so as to be rotatable at regular intervals, and the rotation shaft 42 is connected to the link bar via a crank 45. 46 are connected to each other. Rotating shafts 42 project from the upper and lower portions of each vertical fin 41, and these rotating shafts 42 are rotatably fitted in bearing holes provided in the upper wall and the lower wall in the retainer 2. . A crank 45 is connected to a rotating shaft below each vertical fin 41, and these cranks 45 are connected to each other by a link bar 46. This link mechanism is disposed below the lower wall of the retainer 2 and changes the direction of each vertical fin of the rear movable louver 4.

  Further, as shown in FIG. 2, a fan-shaped gear 47 is provided in front of the longitudinal fin 41 at the center of the rear movable louver 4 so as to protrude forward. The sector gear 47 is disposed in engagement with the knob gear portion 62 of the operation knob 6 mounted on the horizontal fin 31 positioned in front of the sector gear 47, and the vertical fin 41 is operated in accordance with the operation of the operation knob 6 in the left-right direction. To the left and right.

  A damper 5 for closing the ventilation path 21 is pivotally supported at the rear portion of the retainer 2 so as to be able to open and close. Rotating shafts 51 project from both sides of the damper 5, and the rotating shafts 51 are fitted into the damper shaft holes on the side walls of the retainer 2. As shown in FIG. 2, a crank 54 is fixed to one end of the rotating shaft 51 of the damper 5, and a connecting rod 52 is connected to the tip of the crank 54.

  On the other hand, the damper knob 53 is pivotally supported on the side wall portion of the retainer 2 via the shaft portion 56, and a lever-like link portion 55 integrally formed with the damper knob 53 is connected to the tip of the connecting rod 52. The other end of the connecting rod 52 is connected to a crank 54 fixed to the rotating shaft 51 of the damper knob 53. The front portion of the damper knob 53 protrudes forward from the damper knob opening of the bezel 1, and when the damper knob 53 is held and rotated with the shaft portion 56 as a fulcrum, the link portion 55, the connecting rod 52, The damper 5 rotates via the crank 54 to open and close the ventilation path 21.

  As shown in FIG. 2 and the like, the operation knob 6 for adjusting the directions of the front movable louver 3 and the rear movable louver 4 is slidably fitted on a specific lateral fin 31 of the front movable louver 3 and attached. Is done. As shown in FIG. 5, the operation knob 6 includes a knob body 60 formed in a shape that covers the lateral fins 31, a knob cover 61 that is fitted to the outer central portion so as to cover the outside of the knob body 60, Knob gear portion 62 assembled to the back surface portion (rear portion) of the knob body 60, a rubber-like elastic body 63 fitted in the knob body 60, and a leaf spring that urges the rubber-like elastic body 63 toward the lateral fin 31 side. 69.

  The knob body 60 is formed in a substantially U shape in a side view so as to cover the outer surfaces of the front surface, the upper surface, and the lower surface of the horizontal fin 31, and a pair of plate-like fitting portions at the upper and lower ends on the rear surface side. 67 is protrudingly provided. Further, a rectangular hole 68 is formed in the inner central portion of the knob body 60 so as to penetrate to the back side. A rubber-like elastic body 63 such as silicon rubber is fitted into the rectangular hole 68, and the protrusion 63 a of the rubber-like elastic body 63 is in contact with the front surface of the lateral fin 31 and pressed with an appropriate sliding resistance. It has become. As shown in FIG. 4, guide portions are provided on the upper and lower inner surfaces of the knob body 60 in the vicinity thereof. A ridge 34 projecting from the front portion of the horizontal fin 31 is slidably fitted to the guide portion, and guides the movement of the operation knob 6 within a predetermined range in the left-right direction.

  The rubber-like elastic body 63 is formed of oil-impregnated silicon rubber having moderate elasticity and good sliding resistance, and as shown in FIG. 5, the main body portion is formed as a rectangular flat portion 63b having a rectangular plate shape. Two projecting portions 63a are projected from the back side of the rectangular flat portion 63b. The two protrusions 63a are formed so as to be fitted in a rectangular hole 68 provided in the central portion of the knob body 60. The rectangular hole 68 is formed through the inside of the knob main body 60, and the tip of the protruding portion 63 a of the rubber-like elastic body 63 fitted and inserted into the rectangular hole 68 is formed on the lateral fin 31 inserted into the knob main body 60. Touch the front.

  As shown in FIG. 5, a knob cover 61 is fitted to the outer center portion of the knob body 60 so as to cover the front surface portion, the upper surface portion, and the lower surface portion of the substantially central portion of the knob body 60. The knob cover 61 is formed by bending a plate into a substantially U shape, and is integrally formed of hard synthetic resin. A pair of upper locking claws 61a and 61a are provided on both sides of the upper end of the rear side, and the rear side A pair of lower locking claws 61b, 61b are projected from both sides of the lower end of the tip. Further, two pairs of fitting portions 61 c are provided at the middle of the rear end of the knob cover 61 so as to fit into fitting grooves 62 d of a knob gear portion 62 described later.

  The knob gear portion 62 covers the back side of the horizontal fin 31 and is formed so as to be assembled to the back side of the knob body 60, and tooth portions are formed on the back surface in the vertical direction with a predetermined interval. . Further, as shown in FIG. 5, the triangular engagement portion 62 c that engages with the guide groove 33 on the back surface of the horizontal fin 31 when mounted on the outer peripheral portion of the horizontal fin 31 at both front end portions of the knob gear portion 62. Is provided in a projecting manner. The triangular engagement portion 62c is projected so as to have a triangular shape in a side view, and is not easily collapsed or deformed during molding, and can be molded into an accurate design shape.

  Further, in the engagement between the guide groove 33 having a triangular cross section and the triangular engagement portion 62c, even if a slight error occurs in the engagement surface and the shape and size thereof, the engagement does not occur. For this reason, the triangular engaging part 62c can be satisfactorily engaged with the guide groove 33 of the lateral fin 31, and can smoothly slide and guide the movement of the operation knob 6.

  Further, the knob gear portion 62 is formed with groove portions 62a for engaging the upper locking claws 61a of the knob cover 61 on both sides inside the upper portion. A locking hole 62b for locking the lower locking claw 61b is formed in a rectangular hole shape. Further, a pair of fittings are fitted on the front side of the knob gear part 62 in order to fit the plate-like fitting part 61c on the back side of the knob cover 61 and the plate-like fitting part 67 on the back side of the knob body 60. A groove 62d is formed in parallel in the upper part and the lower part.

  As shown in FIG. 5, the leaf spring 69 is formed by bending a thin strip-shaped leaf spring material, its both end portions are bent into a substantially U shape, the central portion is a free end, and both ends are U-shaped. It is formed by providing a shape portion 69a. The leaf spring 69 is inserted between the rectangular flat portion 63b of the rubber-like elastic body 63 and the inner central portion of the knob cover 61, and biases the rubber elastic body 63 toward the lateral fin 31 side.

  When the operation knob 6 is assembled, as shown in FIG. 5, first, the rubber-like elastic body 63 is fitted into the rectangular hole 68 of the knob main body 60 so as to insert the pair of protruding portions 63a from the front side, and the rectangular flat portion A leaf spring 69 is placed on 63b, and a knob cover 61 is placed on the outer central portion of the knob body 60 from above.

  Next, such an assembly of the knob body 60, the knob cover 61, the rubber-like elastic body 63, and the leaf spring 69 is arranged so as to cover the outer peripheral portion of the specific lateral fin 31 as shown in FIG. The knob gear 62 is assembled from the front and the knob gear 62 is assembled from the back.

At this time, the upper locking claws 61a, 61a on both sides of the upper portion of the knob cover 61 are locked in the locking grooves 62d on both sides of the upper surface of the knob gear portion 62, and the lower locking claws 61b, 61b on both sides of the lower portion of the knob cover 61 are moved. Inserting into the locking holes 62b, 62b on both lower sides of the knob gear portion 62, the upper locking claws 61a, 61a are locked to the locking grooves 62a, 62a, and the lower locking claws 61b, 61b are locked to the locking holes 62b, 62b. The operation knob 6 is assembled by being locked. At this time, as shown in FIG. 4, the fitting portion 61c of the knob cover 61 and the plate-like fitting portion 67 of the knob body 60 are fitted and positioned in the fitting groove 62d of the knob gear portion 62, and the knob body 60 and the knob cover 61 are The gear portion 62 is fitted at an accurate position.
By assembling the operation knob 6 as described above, as shown in FIG. 4, the triangular engagement portion 62 c of the knob gear portion 62 is engaged with the guide groove 33 of the lateral fin 31, and the inner guide portion in the knob body 60 is laterally moved. The protrusions 63 a of the rubber-like elastic body 63 are brought into contact with the projections 34 of the fin 31 while the front side of the horizontal fin 31 is urged, and the operation knob 6 is in the longitudinal direction with respect to the horizontal fin 31. It is slidably mounted with an appropriate operation load. At this time, the rubber-like elastic body 63 is biased toward the lateral fins 31 by the leaf spring 69 inserted between the front side of the rubber-like elastic body 63, that is, the knob cover 61.

  The air blowing adjustment register having the above-described configuration is attached to an instrument panel or a dashboard portion in an automobile so that the end of the retainer 2 is connected to a ventilation duct (not shown). The air sent from the ventilation duct is blown out from the ventilation path 21 in the retainer 2 through the air outlet 11.

  When adjusting the air blowing direction up or down, the operation knob 6 of the front movable louver 3 is turned up or down for adjustment. When the operation knob 6 is held and rotated up or down, as shown in FIG. 2, the horizontal fin 31 on which the operation knob 6 is mounted rotates up and down around the rotation shaft 32, and its turning power Is transmitted to the other lateral fins 31 via the crank 35 and the link bar 36, and each lateral fin 31 rotates about its pivot shaft 32, and the vertical direction of the lateral fin 31 causes the pivot shaft 32 to rotate. It changes as an axis, and the blowing direction of air is adjusted up and down.

  On the other hand, when adjusting the air blowing direction to the left and right, the operation knob 6 is adjusted to the left or right. When the operation knob 6 is moved to the left or right with the operation knob 6, the operation knob 6 slides on the lateral fin 31, and at this time, the friction between the pair of protrusions 63 a of the rubber-like elastic body 63 and the front surface of the lateral fin 31. Due to the resistance, an appropriate operation load is generated, and the wind direction can be adjusted by moving the operation knob 6 left and right with a good operation load, that is, an excellent feeling.

  Further, since the rubber-like elastic body 63 is urged toward the lateral fin 31 by the leaf spring 69, the widthwise dimension of the lateral fin 31, the size of the rubber-like elastic body 63, and the rectangular hole 68 of the knob body 60. When variations in dimensions occur between products, the elastic elastic body 63 is urged toward the lateral fins by the leaf springs 69, so that variations in the dimensions of each part for each product are absorbed, and operations for each product are performed. The variation in load can be suppressed and the operation load can be stabilized.

  Then, by moving the operation knob 6 in the lateral direction, the tooth portion of the knob gear portion 62 of the operation knob 6 rotates the sector gear 47, whereby the vertical fin 41 of the rear movable louver 4 moves its shaft portion 42. The fulcrum pivots to the left and right, and the turning force is transmitted to the other vertical fins 41 via the crank 45 and the link bar 46. Each vertical fin 41 pivots about the pivot shaft 42, and the vertical fin 41 The direction of the left and right direction changes around the rotation shaft 42, and the air blowing direction is adjusted to the left and right.

  Thus, since the rubber-like elastic body 63 in the knob body 60 slides while pushing the front part of the horizontal fin 31, an appropriate sliding resistance is generated between the horizontal fin 31 and the rubber-like elastic body 63. Thus, the operation knob 6 can be satisfactorily slid with an appropriate operation load. Even if the width dimension of the horizontal fin 31 or the dimension of the inner shape of the knob body 60 varies among products, the variation in the dimension is absorbed by the leaf spring 69, so that the operation knob 6 is attached to the horizontal fin 31. There is no strong interference or rattling, and a stable operating load can be applied to all products.

  FIG. 6 shows a leaf spring 70 according to another embodiment. Instead of the leaf spring 69, a leaf spring 70 having a simpler structure can be used. The leaf spring 70 is formed by forming flat portions 70a at both ends of a very thin strip-shaped leaf spring material, and by providing a central portion 70b having an inclined portion from the flat portion 70a to the center portion. Similarly to the above, the leaf spring 70 is also inserted and used between the rubber-like elastic body 63 and the knob cover 61 and can favorably urge the rubber-like elastic body 63 toward the lateral fin 31 side.

The air blowing adjustment register of the present invention is not limited to the above embodiment, and can be implemented in the following manner.
1. In the above, the knob gear provided on the back of the operation knob is engaged with the sector gear provided on the vertical fin of the rear movable louver, and the rear movable louver is rotated by the sliding operation of the operation knob. However, the rear movable louver can also be rotated by linking the operation knob and the vertical fin with a link.
2. In the above description, the rubber-like elastic body is disposed at the front portion of the horizontal fin. However, the rubber-like elastic body may be disposed on the back side in the operation knob so as to contact the back surface of the horizontal fin.
3. In the above, the rubber-like elastic body and the leaf spring are disposed in the operation knob, but the rubber-like elastic body is disposed in contact with the operation knob in the recess provided in the fin, and the rubber-like elastic body is disposed in the recess of the fin. A leaf spring that biases the elastic body toward the operation knob can also be provided.
4). In the above description, a pair of protrusions are provided on the back side of the rubber-like elastic body. However, without providing the protrusions, a part of the rubber-like elastic body is fitted into the rectangular hole of the knob body, and the portion is fixed to the fin. You may make it contact | abut on the front surface.
5. In the above, the knob gear is fitted to the back side of the knob body and the operation knob is attached. However, the operation knob is divided into an upper knob body and a lower knob body, and the upper part is covered so that the upper and lower parts of the fin are covered. The knob main body and the lower knob main body can be fitted to each other to attach the operation knob.
6). Further, in the above, the operation knob is formed by dividing it into a knob body, a knob cover, and a knob gear part, and these are assembled so as to cover the horizontal fins, but the operation knob is integrally formed and the horizontal fins are inserted. The operation knob may be provided with a recess or a through hole, and the operation knob is assembled to the horizontal fin by rotating or inserting the horizontal fin into the recess or the through hole of the integrally formed operation knob. it can.

It is a front view of the register for air blowing adjustment which shows one Embodiment of this invention. It is II-II sectional drawing of the register. It is a top view of a horizontal fin and an operation knob. FIG. 4 is an enlarged IV-IV sectional view of FIG. 3. It is a disassembled perspective view of an operation knob and a horizontal fin. It is a perspective view of the leaf | plate spring of other embodiment.

Explanation of symbols

3 Front movable louver 4 Rear movable louver 6 Operation knob 21 Ventilation path 31 Horizontal fin 60 Knob body 61 Knob cover 62 Knob gear part 63 Rubber elastic body 69 Leaf spring

Claims (5)

In the air blowing adjustment register, the operation knob is slidably fitted to the fin of the front movable louver, and the wind direction is adjusted by the operation knob.
An air characterized in that a rubber-like elastic body is disposed in contact with the fin in the operation knob, and a leaf spring for urging the rubber-like elastic body toward the fin is provided in the operation knob. Blowout adjustment register. The operation knob includes a knob body that covers the front surface of the fin of the front movable louver, a knob cover that is fitted to cover the outside of the knob body, and a gear that is fitted to the knob body and the back surface of the knob cover. A knob gear portion having a portion, and a rubber-like elastic body is fitted to the knob body so as to contact the front portion of the fin, and a plate is provided between the rubber-like elastic body and the inner surface of the knob cover. 2. The air blowing adjustment register according to claim 1, wherein a spring is disposed by biasing the rubber-like elastic body toward the fin. The rubber-like elastic body is formed by providing a portion that comes into contact with the front portion of the fin on the back side of the rectangular flat portion, and is fitted by inserting the portion into a rectangular hole provided in the central portion of the knob body. 3. The leaf spring is formed by bending both sides into a substantially U shape, and is inserted between a rectangular flat portion of the rubber-like elastic body and an inner surface of the knob cover. Air blowout adjustment register. The said leaf | plate spring was formed by providing the flat part in the both ends of a strip | belt-shaped leaf | plate spring material, and providing in the center the mountain-shaped part which formed the inclination part from this flat part to the center part. Air blowout adjustment register. In the air blowing adjustment register, the operation knob is slidably fitted to the fin of the front movable louver, and the wind direction is adjusted by the operation knob.
A rubber-like elastic body is disposed in contact with the operation knob in a recess provided in the fin, and a leaf spring for biasing the rubber-like elastic body toward the operation knob is provided in the recess. A feature of air blow adjustment register.

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