JP6576855B2 - Louver device - Google Patents

Description

  The present invention relates to a louver device that is used, for example, in an air blowing section for ventilation or air conditioning in a passenger compartment of an automobile.

  Patent Document 1 includes a plurality of substantially cylindrical frame bodies having an air outlet at the front end, a fin main body portion, and a pair of shaft portions that protrude outward in the rotational axis direction of the fin main body portion. And a bearing member attached to the front end part of the circumferential part of the frame body from the inside, having a plurality of bearing holes in which one shaft part of the plurality of fins is rotatably inserted. There is disclosed a louver device including a front end portion of a part of the bearing member in the circumferential direction and a cover panel that covers the bearing member from the front. In this louver device, the front end edge of the frame body is formed with a notch that opens forward, and a plurality of protrusions are provided on the outer surface of the bearing member so as to surround the bearing hole, The protruding part of the bearing member is fitted into the cutout part of the frame. By doing so, the protruding portion of the bearing member is arranged so as to overlap the side wall of the frame body in the front-rear direction, so that the cover is compared with the case where the entire bearing member is disposed inside the inner surface of the front end portion of the frame body. The panel width can be set shorter than the frame thickness.

Japanese Patent No. 4953899

  However, in the above-mentioned Patent Document 1, the outer surface of the bearing member is in contact with the inner surface of the front end portion of the frame body between the adjacent protruding portions, so that the fin main body portion is thermally expanded in midsummer or the like. If it extends in the direction of the rotation axis, the reaction force due to the pressure contact with the bearing member acts on the fin body, and the fin may not rotate smoothly.

  Also, when the louver device is assembled in midsummer, etc., the fin main body extends in the direction of the rotational axis due to thermal expansion, so that the fin and the bearing member are attached to each other inside the frame body. It becomes difficult to insert.

  When the clearance is provided between the bearing member and the inner surface of the front end portion of the frame body in consideration of the thermal expansion of the fin, rattling of the fin and the bearing member is caused.

  The present invention has been made in view of such a point, and an object of the present invention is to enable the fin to smoothly rotate while preventing the fin and the bearing member from rattling, and It is to facilitate the assembly work.

  In order to achieve the above object, according to the present invention, the outer surface of the bearing member is sandwiched between adjacent projecting portions and is brought into contact with the inner surface of the front end portion of the frame body at a location away from both projecting portions. It is characterized by that.

  Specifically, the first invention includes a substantially cylindrical frame body having an air outlet at the front end, a fin main body portion, and a pair of fin main body portions that protrude outward in the rotational axis direction. A plurality of fins having a shaft portion and a plurality of bearing holes into which one shaft portion of the plurality of fins is rotatably inserted, the front end portion of the frame body in a circumferential direction part of the frame body A long resin bearing member attached from the inside so as to be along the circumferential direction; a cover panel covering the front end portion of the frame body in the circumferential direction and the bearing member from the front; and the frame body. The front end edge is formed with a notch opening forward, and on the outer surface of the bearing member, a plurality of protrusions are provided so as to surround the bearing hole, and the protrusion of the bearing member is The following solution was taken for the louver device fitted in the notch of the frame.

  That is, according to the first aspect of the present invention, a spacer portion is integrally provided with a gap between the protrusion portions adjacent to each other on the outer surface of the bearing member, and the protrusion height of the spacer portion. Is set lower than the protruding height of the protruding portion, the spacer portion of the bearing member is in contact with the inner surface of the front end portion of the frame body, and the spacer portion non-forming region on the outer surface of the bearing member is It is characterized by facing the inner surface of the front end portion of the frame body with a gap on the outer peripheral side of the protruding portion.

  The second invention is characterized in that the protruding portion of the bearing member protrudes at a position slightly away from the bearing hole.

  In a third aspect of the present invention, the projecting portion of the bearing member is a projecting ridge portion that opens to the front of the frame body.

  According to the first aspect of the present invention, even when the fin main body portion extends in the direction of the rotational axis due to thermal expansion and presses the bearing member outward in the summer when the louver device is assembled, the spacer portion of the bearing member is not Since the forming region bends toward the gap with the front end inner surface of the frame body on the outer peripheral side of the protruding portion, the reaction force acting on the fin main body portion from the bearing member is reduced, and the fin is likely to rotate smoothly.

  In addition, since the spacer portion is formed with a distance from both adjacent protruding portions, the spacer portion is easily bent inward as compared with the case where the spacer portion is formed between the adjacent protruding portions. Therefore, even if the fins extend in the direction of the rotational axis due to thermal expansion in midsummer, etc., the fins and bearing members can be inserted inside the frame body while being bent inwardly, and the assembly can be inserted. Installation work is easy.

  In addition, a notch is provided at the front end of the frame, making it easier to bend than when no notch is provided, so even if the fins extend in the direction of the rotational axis due to thermal expansion during summer, the frame The fin and the bearing member can be inserted into the frame body in a state in which the front end portion of the body is bent outward, and the assembling work is easy.

  Further, since the spacer portion of the bearing member is in contact with the inner surface of the front end portion of the frame body, rattling of the fin and the bearing member is prevented.

  Further, since the protruding portion of the bearing member is arranged so as to overlap the side wall of the frame body in the front-rear direction, the width of the cover panel can be reduced compared to the case where the entire bearing member is disposed inside the inner surface of the front end portion of the frame body. The frame can be set shorter than the thickness of the frame, improving the degree of freedom in designing the cover panel.

  Further, since the periphery of the bearing hole of the bearing member is reinforced by the protruding portion, damage around the bearing hole of the bearing member is prevented.

  According to the second invention, since the protrusion of the bearing member is formed at a position slightly away from the bearing hole, the shrinkage after the molding of the bearing member as compared with the case where the protrusion is formed at the peripheral edge of the bearing hole. Variations in the position and diameter of the bearing hole due to are suppressed.

  According to the third aspect of the invention, since the protruding portion of the bearing member can be bent so that the both open end portions thereof are close to each other, there is an error in the position and size of the protruding portion of the bearing member and the cutout portion of the frame body. Even if it occurs, it is easy to fit the protruding portion of the bearing member into the cutout portion of the frame.

It is a perspective view of the instrument panel of a motor vehicle. It is a perspective view of a louver device concerning an embodiment of the present invention. It is a disassembled perspective view of the passenger seat side frame, inner bearing member, outer bearing member, lateral fin, and cover panel. FIG. 4 is an enlarged view corresponding to part A of FIG. 3 in a state where the inner bearing member is not assembled to the passenger seat side frame. FIG. 5 is a view corresponding to FIG. 4 in a state where the inner bearing member is assembled to the frame on the passenger seat side. It is sectional drawing in the BB line of FIG. It is sectional drawing in the CC line of FIG. It is sectional drawing in the DD line | wire of FIG. It is the arrow line view which looked at the front-end part of the frame by the side of a passenger seat, an inner side bearing member, and a horizontal fin from the arrow E direction of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of an instrument panel 1 of a right-hand drive automobile. The instrument panel 1 has an upper surface portion 1a extending rearward from the vicinity of a lower end portion of a front window glass (not shown), and a rear surface portion 1b extending downward while curving from a rear edge of the upper surface portion 1a. A center panel portion 3 is provided at a center portion in the vehicle width direction of 1b. The center panel 3 is provided with an operation switch 5 and the like of a vehicle air conditioner (not shown) (hereinafter referred to as “HVAC”) installed in the instrument panel 1. A substantially rectangular opening 7 that is long in the vehicle width direction is formed in the vicinity of the upper end of the center panel portion 3, and the louver device 9 according to the embodiment of the present invention is attached to the opening 7. In addition, in FIG. 1, 10 is a side vent air blower outlet.

  As shown in FIGS. 2 to 9, the louver device 9 includes a pair of substantially rectangular cylindrical frames 11 and 12 that are adjacent to each other in the left-right direction (vehicle width direction) in order from the passenger seat side (left side in FIG. 1). ing. These frame bodies 11 and 12 are injection-molded with a resin material. At one end of these frames 11 and 12, an air outlet 13 is formed so as to correspond to the opening of the center panel portion 3, and these outlets 13 constitute a center vent air outlet. A bent portion 14 is formed in the middle of the frames 11, 12, and the outlet 13 side of the frames 11, 12 extends obliquely upward to the rear of the vehicle body toward the outlet 13. On the other hand, the side opposite to the air outlet 13 from the bent portion 14 of the frames 11 and 12 extends downward toward the side opposite the air outlet 13. The ends of the frames 11 and 12 on the side of the counter air outlet 13 are connected to an HVAC (not shown) through an air duct (not shown). Hereinafter, the opening direction (rear side of the vehicle body) of the air outlets 13 of the frame bodies 11 and 12 is defined as the front, and the opposite direction (front direction of the vehicle body) is defined as the rear.

  The step portion 15 extends over the entire circumference so that the front side of the frame bodies 11 and 12 is slightly rearward of the front end portion (end portion on the air outlet 13 side). A rectangular annular surface portion 17 facing forward is formed at a portion corresponding to the step portion 15 on the inner surfaces of the frames 11 and 12. A slit 19 is formed in the outer peripheral portion of the midway portion in the longitudinal direction of the portion extending on the outer side in the vehicle width direction of the annular surface portion 17.

  At the front end edges of the side walls in the vehicle width direction of both the frame bodies 11 and 12, five U-shaped first cutout portions 21 opening forward are formed at intervals. A rectangular locking hole 23 is formed on both sides of the frame 11, 12 between the first notch 21 at both ends of the side walls in the vehicle width direction and the first notch 21 at the inside. It is formed so as to penetrate the notch 21 with a space.

  At the center of the front edge of the side walls on the outer side in the vehicle width direction of both frame bodies 11, 12, a second notch 25 having an isosceles trapezoidal shape opening forward is formed so as to gradually narrow toward the rear. Has been.

  A rectangular recess in plan view that is recessed toward the inside of the frame 11 at the inner end in the vehicle width direction on the side wall on the front side (rear side of the vehicle body) on the side opposite to the outlet 13 from the bent portion 14 of the frame 11 on the passenger seat side. 27 is formed, and a locking claw portion 29 is integrally projected from the center of the recess 27 toward the outside of the frame body 11. On the other hand, a plate-like locking piece 31 is provided at the inner side end in the vehicle width direction on the side wall on the front side (rear side of the vehicle body) on the side opposite to the outlet 13 from the bent portion 14 of the frame 12 on the driver's seat side. It protrudes integrally with no step toward the side. A locking hole 31a is formed through the locking piece 31. A locking claw 29 of the frame 11 on the passenger seat side is inserted and locked in the locking hole 31a.

  A plurality of attachment piece portions 33 for attaching the instrument panel 1 to the center panel portion 3 are formed on the upper and lower side walls of the front end portions of the frame bodies 11 and 12 so as to project. In addition, plate-like engagement pieces 35 are integrally projected without any step toward the inner side in the vehicle width direction at the inner ends in the vehicle width direction of the upper and lower side walls of the front end portions of both frame bodies 11 and 12. The engagement piece portion 35 is formed with a U-shaped third cutout portion 35a that opens inward in the vehicle width direction.

  3, 37 is a bearing hole of a damper opening / closing dial 73 described later, and 39 is a bearing hole of a damper (not shown).

  A long inner bearing member 41 is provided at the front end of the side wall in the vehicle width direction (part in the circumferential direction) of both the frame bodies 11 and 12 (the front side of the step portion 15). On the other hand, a long outer bearing member 43 is provided in the circumferential direction of the frame bodies 11 and 12 at the front end of the side walls of the frame bodies 11 and 12 on the outer side in the vehicle width direction. It is attached from the inside along. These inner bearing member 41 and outer bearing member 43 are also injection-molded with a resin material. The inner bearing member 41 and the outer bearing member 43 pivotally support a plurality of (here, five) long plate-shaped resinous lateral fins 45 extending in the vehicle width direction with an interval in the vertical direction.

  The horizontal fin 45 has a long plate-like fin main body 45a extending in the vehicle width direction, and a pair of shaft portions 45b protruding outward in the rotational axis direction of the fin main body 45a. . An operation knob 47 is attached to the fin body 45a of the horizontal fin 45 at the center in the vertical direction. Further, the five horizontal fins 45 are connected so as to be rotatable from the rear by a connecting link 49 in the vicinity of the outer end in the vehicle width direction of the fin main body 45a.

  The inner bearing member 41 has a long inner plate-like portion 51 extending along the inner surface of the front end portion of the side walls in the vehicle width direction of both frame bodies 11 and 12. A plurality (five in this case) of bearing holes 53 are formed in the inner plate-like portion 51 at intervals in the longitudinal direction, and the shaft portions 45b of the lateral fins 45 rotate in the bearing holes 53, respectively. It is inserted movably. On the inner surface of the inner plate-like portion 51, an annular boss portion 55 is integrally projected along the outer peripheral edge of the bearing hole 53. The boss portion 55 is in contact with one end surface in the longitudinal direction of the fin body portion 45 a of the lateral fin 45. In addition, on the outer surface of the inner plate-like portion 51, first protrusions 57 as a plurality of U-shaped protrusions (here, five) opened forward are provided at positions slightly apart from the respective bearing holes 53. It protrudes integrally with a space in the longitudinal direction so as to surround the bearing hole 53. Further, between the first protrusions 57 adjacent to each other in the widthwise middle part of the outer surface of the inner plate-like part 51, the second protrusions 59 serving as spacer parts extending in the width direction are both first protrusions. It protrudes integrally with the space 57. The protrusion height H2 of each second protrusion 59 is set to be lower than the protrusion height H1 of the first protrusion 57. A projecting portion having a triangular cross section is formed in the longitudinal middle portion of the end surface of the second projecting portion 59 sandwiched between the first projecting strip portion 57 at both ends in the longitudinal direction and the first projecting strip portion 57 inside thereof from both sides in the longitudinal direction. 61 protrudes integrally. The front end surface of the protrusion 61 is inclined outward toward the front. The first ridge 57 is fitted into the first notch 21 of the frame bodies 11 and 12 in a state where the open side end portions are bent so as to approach each other, and the second ridge 59 is The frame bodies 11 and 12 are in contact with the inner surfaces of the front end portions of the side walls in the vehicle width direction. Further, the second protrusion 59 non-formation region on the outer surface of the inner plate-like portion 51 of the inner bearing member 41 is a side wall on the outer peripheral side of the first protrusion 57 on the inner side in the vehicle width direction of the frames 11 and 12. Is opposed to the inner surface of the front end portion with a gap S therebetween. The width W of the gap S is set to about 0.5 to 1 mm. Further, the protrusion 61 is locked to the periphery of the locking hole 23 of the frame bodies 11 and 12. A trapezoidal plate-like protruding piece 63 is provided at the front edge of the inner plate-like portion 51 sandwiched between the first protrusion 57 on both ends in the longitudinal direction and the first protrusion 57 on the inner side from both sides in the longitudinal direction. It protrudes so as to narrow toward the side.

  On the other hand, the outer bearing member 43 has a long outer plate-like portion 65 extending along the inner surface of the front end portion of the side walls on the outer side in the vehicle width direction of the frame bodies 11 and 12. The outer plate-like portion 65 is also formed with a plurality of (here, five) bearing holes (not shown) at intervals in the longitudinal direction, and each of the bearing holes has a shaft portion of the horizontal fin 45. 45b is rotatably inserted. A fitting rib 69 extending in the shape of a mountain narrowing toward the rear of the frame bodies 11 and 12 is projected from a midway portion in the longitudinal direction of the front end portion on the outer surface of the outer plate-like portion 65. The fitting rib 69 includes a pair of opposing portions 69a extending so as to gradually approach rearward from the front end edge, and a connecting portion (not shown) that connects the rear end portions of the opposing portions 69a. . The fitting rib 69 is fitted into the second cutout portion 25 of the frame bodies 11 and 12. In addition, a trapezoidal plate-like insertion piece 71 projects from the middle portion of the rear end edge of the outer plate-like portion 65 so as to become narrower toward the tip side. An engaging claw (not shown) is integrally projected from the outer surface of the distal end of the insertion piece 71. The insertion piece 71 is inserted into the slits 19 of the frame bodies 11 and 12, and the engaging claws are engaged with the outer peripheral edges of the slits 19 of the frame bodies 11 and 12.

  A plurality of vertical fins (not shown) and dampers (not shown) are disposed behind the horizontal fins 45 inside the frames 11 and 12.

  A damper opening / closing dial 73 for operating the damper (not shown) is disposed between the frames 11 and 12.

  The shafts of the dampers in both the frame bodies 11 and 12 protrude between the frame bodies 11 and 12 from the bearing hole 39 and are connected by a damper opening / closing dial 73 and a damper link member (not shown).

  The front end surface (front end portion) of the side walls in the vehicle width direction of the frames 11 and 12 and the inner bearing member 41 are covered from the front (rear side of the vehicle body) by a common cover panel 75 with the plate surface facing in the front-rear direction. It has been broken. The cover panel 75 has a long plate-like panel main body 75a extending in the vertical direction. A rectangular long hole 75b extending in the vertical direction is formed through the panel body 75a, and the damper opening / closing dial 73 is exposed from the long hole 75b. Further, an engagement claw portion (not shown) protrudes from the rear surface of the panel main body portion 75a, and the engagement claw portion is a third cutout portion 35a of the engagement piece portion 35 of the frame bodies 11 and 12. Engage with the periphery.

  The air blowing direction of the louver device 9 configured as described above is the vertical direction by rotating the operation knob 47 in the vertical direction and rotating the five horizontal fins 45 around the shaft portion 45b. Adjusted to

  Here, a procedure for assembling the louver device 9 configured as described above will be described. First, vertical fins (not shown) are assembled into the frame bodies 11 and 12 from the outlet 13 side. In addition, with a damper opening / closing dial 73 interposed between both the frame bodies 11, 12, a damper (not shown) is assembled into the inside of the both frame bodies 11, 12 from the counter blowout port 13. Thereafter, the five horizontal fins 45 are assembled to both the frame bodies 11 and 12 via the inner bearing member 41 and the outer bearing member 43. In order to assemble the horizontal fins 45 to both the frame bodies 11, 12, first, the vicinity of one end of the fin body portion 45 a of the five horizontal fins 45 is connected by the connecting link 49, and the shaft portion 45 b on the anti-connecting link 49 side. Is inserted into the inner bearing member 41, and the shaft portion 45 b on the connecting link 49 side is inserted into the outer bearing member 43. In this state, the second projecting portion 59 is not formed on the outer peripheral side of the first projecting portion 57 on the outer surface of the inner plate-shaped portion 51 of the inner bearing member 41 and the outer surface of the outer plate-shaped portion 65 of the outer bearing member 43 is fitted. The distance D1 between the joint rib 69 and the non-formed portion is between the inner surface of the front end portion of the side wall in the vehicle width direction of the frame bodies 11 and 12 and the inner surface of the front end portion of the side wall in the vehicle width direction of the frame bodies 11 and 12. It is shorter than the interval D2. And in this state, by pinching both protruding pieces 63 of the inner bearing member 41 with fingers and pressing the front end surface of the protrusion 61 against the front end edge of the side wall in the vehicle width direction of the frame body 11, Both the bearing members 41 and 43 are inserted into the frame 11 from the outlet 13 while the protrusion 61 and the second protrusion 59 are bent inward. When the protrusion 61 reaches the locking hole 23 of the frames 11, 12, the first protrusion 57 of the inner bearing member 41 is bent in such a manner that both open side ends thereof are brought close to each other. The first and second first notches 21 and 12 are fitted. Further, the insertion piece 71 of the outer bearing member 43 is inserted into the slit 19 of the frames 11 and 12, and the fitting rib 69 is fitted into the second cutout 25 of the frames 11 and 12. At this time, since the second ridges 59 are formed with a distance from the adjacent first ridges 57, the second ridges are formed between the adjacent first ridges 57. Compared with the case where 59 is formed, the 2nd protrusion 59 is easily bent inside. Therefore, even if the horizontal fin 45 extends in the rotational axis direction due to thermal expansion in midsummer, etc., the horizontal fin 45 and the two bearing members 41 and 43 are connected to the frame body 11 while the second protrusion 59 is bent inward. 12 can be inserted inside, and the assembly work is easy. Further, since the first notches 21 are provided at the front end portions of the frames 11 and 12 and are more easily bent than when the first notches 21 are not provided, the lateral fins 45 are thermally expanded during the summer. Even if extending in the direction of the rotational axis, the lateral fin 45 and both bearing members 41 and 43 can be inserted inside the frame bodies 11 and 12 while bending the front end portions of the frame bodies 11 and 12 outward. Installation work is easy. Moreover, since the 1st protrusion 57 of the inner side bearing member 41 makes the shape opened to one side, and it can be bent so that the open side both ends may mutually approach, the 1st protrusion part of the inner side bearing member 41 Even if there is an error in the position or size of the first notch 21 of the frame body 11 or 12, the first protrusion 57 of the inner bearing member 41 is fitted into the first notch 21 of the frame body 11 or 12. Easy to match.

  Thereafter, the cover panel 75 is pressed against both the frame bodies 11 and 12 with the long holes 75 b corresponding to the damper opening / closing dial 73, whereby the notch claw portions (not shown) of the cover panel 75 are pressed to the both frame bodies 11 and 12. The third notch 35a is engaged with the periphery. Thereby, the assembly of the louver device 9 is completed.

  Therefore, according to the above embodiment, even when the fin main body 45a extends in the direction of the rotational axis due to thermal expansion and presses the inner bearing member 41 to the inner side in the summer when the louver device 9 is assembled, Since the second protrusion 59 non-formation region of the bearing member 41 bends toward the gap S with the inner surfaces of the front ends of the frames 11, 12 on the outer peripheral side of the first protrusion 57, The reaction force acting on the main body 45a is reduced, and the horizontal fins 45 are easily rotated smoothly.

  Moreover, since the 2nd protrusion part 59 of the inner side bearing member 41 is contact | abutting to the inner surface of the front-end part of the frames 11 and 12, rattling of the horizontal fin 45 and the inner side bearing member 41 is prevented.

  In addition, since the first protrusion 57 of the inner bearing member 41 is disposed so as to overlap the side walls of the frames 11 and 12 in the front-rear direction, the entire inner bearing member 41 is located on the inner side of the inner surfaces of the front end portions of the frames 11 and 12. As compared with the case where the cover panel 75 is provided, the width of the cover panel 75 can be set shorter in the vehicle width direction by the thickness of the frame bodies 11 and 12, and the degree of freedom in designing the cover panel 75 is improved.

  Further, since the periphery of the bearing hole 53 of the inner bearing member 41 is reinforced by the first protrusion 57, damage around the bearing hole 53 of the inner bearing member 41 is prevented.

  In addition, since the first protrusion 57 of the inner bearing member 41 is formed at a position slightly away from the bearing hole 53, the inner protrusion is formed on the inner side as compared with the case where the first protrusion 57 is formed on the peripheral edge of the bearing hole 53. Variations in the position and diameter of the bearing hole 53 due to shrinkage after the molding of the bearing member 41 are suppressed.

  Further, the first protrusion 57 of the inner bearing member 41 is fitted into the first notch 21 of the frame bodies 11 and 12 in a state where the both ends on the open side are bent closer to each other, and the first notch 21, the inner bearing member 41 is prevented from being detached from the frame bodies 11 and 12.

  The present invention is useful, for example, as a louver device used for ventilation in a passenger compartment of an automobile or an air outlet for air conditioning.

DESCRIPTION OF SYMBOLS 9 Louver apparatus 11 Frame body 12 Frame body 13 Outlet 21 1st notch part 41 Inner bearing member 45 Lateral fin 45a Fin main-body part 45b Shaft part 53 Bearing hole 57 1st protrusion part (protrusion part)
59 Second ridge (spacer)
75 Cover panel S Gap H1 Projection height H2 Projection height

Claims (3)

A substantially cylindrical frame (11, 12) having an air outlet (13) at the front end;
A plurality of fins (45) having a fin body portion (45a) and a pair of shaft portions (45b) projecting outward in the rotational axis direction of the fin body portion (45a);
One shaft portion (45b) of the plurality of fins (45) has a plurality of bearing holes (53) inserted rotatably, and a front end portion of a part of the frame (11, 12) in the circumferential direction A long resin bearing member (41) attached from the inside along the circumferential direction of the frame (11, 12),
A cover panel (75) that covers the front end part of the circumferential part of the frame (11, 12) and the bearing member (41) from the front,
The front end edge of the frame (11, 12) is formed with a notch (21) opening forward,
On the outer surface of the bearing member (41), a plurality of protrusions (57) are respectively provided so as to surround the bearing hole (53),
The louver device in which the projecting portion (57) of the bearing member (41) is fitted into the cutout portion (21) of the frame (11, 12),
Between the protrusions (57) adjacent to each other on the outer surface of the bearing member (41), a spacer part (59) protrudes integrally with the protrusions (57) at an interval, and the spacer part The protrusion height (H2) of (59) is set lower than the protrusion height (H1) of the protrusion (57),
The spacer portion (59) of the bearing member (41) is in contact with the inner surface of the front end portion of the frame (57), and the spacer portion (59) non-forming region on the outer surface of the bearing member (41) is A louver device, wherein a gap (S) is opposed to the inner surface of the front end of the frame (11, 12) on the outer peripheral side of the protrusion (57). The louver device according to claim 1, wherein
The louver device according to claim 1, wherein the protrusion (57) of the bearing member (41) protrudes at a position slightly away from the bearing hole (53). The louver device according to claim 1 or 2,
The protrusion (57) of the bearing member (41) is a ridge having a shape that opens to the front of the frame (57).

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