JP2020163905A - Air-conditioning register - Google Patents

Abstract

To restrain generation of a wind-cutting sound in a state of a ventilation flue being closed with a shut damper.SOLUTION: A shut damper 40 has a pair of damper plates 41, 51 which are tilted in opposite directions to each other with a damper shaft as a fulcrum and open and close a ventilation flue 12 of a retainer. A window part 50 formed in the shut damper 40 is provided with a tubular damper base 70 mounted on the retainer and extending in a flow direction of air-conditioning air A1. A support mechanism SM1 which supports the damper base 70 on the damper plates 41, 51 has a projection part 76 provided in the window part 50, a bearing part 77 formed in the damper base 70 and supporting the projection part 76, and a notch part 78 providing communication between an upstream end surface of the damper base 70 and the bearing part 77 in the flow direction.SELECTED DRAWING: Figure 10

Description

The present invention relates to an air-conditioning register that blows out air-conditioning air sent from an air-conditioning device from an air outlet of a ventilation passage, and more particularly to an air-conditioning register provided with a shut damper that opens and closes the ventilation passage.

The instrument panel of the vehicle incorporates an air-conditioning register that blows out the air-conditioning air sent from the air-conditioning device from the air outlet of the ventilation path in the retainer. As one form of this air conditioning register, as shown in FIG. 12, a shut damper 102 arranged in the ventilation passage 100, at least a rotatably provided operation knob (not shown), and a rotation direction of the operation knob are shown. There is known one provided with a rotation direction changing mechanism TM1 that is changed and transmitted to the shut damper 102 (see, for example, Patent Document 1). In FIG. 12, as the rotation direction conversion mechanism TM1, a damper drive 101 or the like constituting a part thereof is shown. The shut damper 102 includes a pair of damper plates 104 and 105 that are tilted in opposite directions with the damper shaft 103 as a fulcrum by a force transmitted from the damper drive 101 to open and close the ventilation passage 100.

A window portion 106 is formed between the damper plates 104 and 105 in a region including the axis of the damper shaft 103. A tubular damper base 107 that is attached to a retainer (not shown) and extends in the flow direction of the air conditioning air A1 in the ventilation passage 100 is arranged in the window portion 106. The damper drive 101 is rotatably arranged in the damper base 107. The damper base 107 is supported by the damper plates 104 and 105 by the support mechanism SM1 having the following configuration.

That is, the protrusion 108 protrudes toward the facing surface side of each of the windows 106, which face each other in the axial direction of the damper shaft 103. Further, a bearing hole 109 is formed at an upstream end portion of the damper base 107 in the flow direction and facing the axial direction. Slits 111 extending from the upstream end face to the downstream side in the flow direction are formed at the upstream portion of the damper base 107 where the bearing holes 109 are sandwiched from both sides in the circumferential direction of the damper base 107. The upstream portion of the damper base 107, which has a bearing hole 109 and is sandwiched by the pair of slits 111, constitutes a support portion 112 in which the protrusion 108 is supported. Since each support portion 112 is sandwiched by a pair of slits 111, the support portions 112 are more likely to bend in the axial direction than when the slits 111 are not formed.

The support mechanism SM1 is configured by both the protrusions 108 and the support 112. The damper base 107 is supported by the damper plates 104 and 105 by engaging each protrusion 108 with the corresponding bearing hole 109.

Japanese Unexamined Patent Publication No. 2019-6167

According to the conventional air-conditioning register, when the damper base 107 is assembled to the shut damper 102, when both protrusions 108 are engaged with the bearing holes 109, both support portions 112 are elastically deformed toward the side away from each other. Therefore, the assembling load can be reduced as compared with the case where the slit 111 is not formed, and the assembling property can be improved. In addition, deformation of the protrusion 108 due to interference with the support 112 can be suppressed. On the other hand, in a state where the ventilation path 100 is closed by the shut damper 102, the air conditioning air A1 that has passed through the window portion 106 may flow through the slit 111 to generate a wind noise. In a conventional air-conditioning register in which two slits 111 are formed in each of the two support portions 112, the wind noise becomes louder.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an air conditioning register capable of suppressing the generation of wind noise when the ventilation path is closed by a shut damper. There is.

The air conditioning register that solves the above problems includes a shut damper arranged in the air passage of the air conditioning air in the retainer, at least a rotatably provided operation knob, and the operation knob is changed in the direction of rotation. The shut damper is provided with a rotation direction changing mechanism that transmits to the shut damper, and the shut damper is tilted in opposite directions with the damper axis as a fulcrum by the force transmitted from the rotation direction changing mechanism to open the ventilation passage and open the ventilation passage. A pair of damper plates to be closed are provided, and a window portion is formed in a region between the two damper plates including the axis of the damper shaft, and the window portion is attached to the retainer and in the ventilation path. A tubular damper base extending in the flow direction of air conditioning air is arranged, a part of the rotation direction changing mechanism is rotatably arranged in the damper base, and the damper base is supported on both damper plates by a support mechanism. The support mechanism is formed on the damper base and a protruding portion of the window portion that protrudes from each of the surfaces facing each other in the axial direction of the damper shaft toward the facing surface side. Further, it is provided with a pair of bearing portions for supporting the protrusions and a notch for communicating the upstream end surface of the damper base with each bearing portion in the flow direction.

According to the above configuration, when the damper base is assembled to the shut damper, the damper base and the shut damper are brought close to each other so that the protrusion and the notch are close to each other. When the damper base and the shut damper are brought closer to each other with the protrusion inserted into the notch, the protrusion is inserted into the bearing portion and the protrusion is supported by the bearing portion. Unlike conventional damper bases, which require slits to facilitate elastic deformation of the support portion on which the bearing holes are formed, the damper base can be assembled to the shut damper without the slits.

Therefore, the slit for improving the assembling property of the damper base to the shut damper becomes unnecessary, and the number of slits in the damper base is reduced accordingly. Along with this, the generation of wind noise due to the air conditioning air passing through the slit is suppressed.

In the air conditioning register, when the flow direction and the direction orthogonal to the axis of the damper axis are orthogonal directions, each protrusion has a shape in which the dimension in the orthogonal direction becomes smaller toward the downstream side in the flow direction. It is preferable to do so.

By forming each protrusion in a shape satisfying the above conditions, the protrusions can easily enter the notch when the damper base is assembled to the shut damper.
In the air conditioning register, the dimension in the orthogonal direction at the boundary portion of each bearing portion with each notch portion is larger than the dimension in the orthogonal direction at the downstream end of each protrusion portion in the flow direction. It is preferable that the dimensions are set smaller than the dimensions in the orthogonal direction at the upstream end of each protrusion in the flow direction.

When the dimensions of each portion satisfy the above conditions, when the damper base is assembled to the shut damper, the downstream end of each protrusion easily passes through the boundary portion with the notch portion of each bearing portion.

Further, when the protrusion is inserted into the bearing, the downstream end of the notch in the flow direction and the upstream end of the protrusion wrap in the orthogonal direction. Therefore, it is difficult for the protrusion to come out of the bearing.

In the air-conditioning register, when the flow direction and the direction orthogonal to the axis of the damper axis are orthogonal directions, each notch portion has an opposing surface facing the orthogonal direction, and each facing surface has an opposing surface. It is preferable that the surfaces are inclined with respect to the same flow direction so that the distance between the two opposing surfaces becomes smaller toward the downstream side in the flow direction.

Since the facing surfaces in the notch are inclined as described above, when assembling the damper base to the shut damper, the damper base and the shut damper come close to each other with the protrusions in the notch. Then, the protrusion is guided into the bearing by the facing surface. The protrusion is smoothly inserted into the bearing.

In the air conditioning register, each damper plate is arranged in a state of being separated in the axial direction, and each has a pair of shaft support portions extending in the coaxial line direction, and one shaft support portion in each damper plate is the shut. It is composed of an outer shaft support portion arranged at the end portion of the damper in the axial direction, and the other shaft support portion is composed of an inner shaft support portion arranged between the outer shaft support portions of both damper plates. The damper shaft includes a pair of outer damper shafts located at locations separated from each other in the axial direction, and a pair of inner damper shafts located at locations separated from each other in the same direction between the two outer damper shafts. Each inner damper shaft is provided on one of the outer shaft support portion and the inner shaft support portion adjacent to the outer shaft support portion, and is engaged with a recess provided on the other to cause both dampers. The plates are tiltably connected, and the shut damper is tiltably supported by the retainer by the outer damper shaft provided between the outer shaft support portion and the retainer, and the window portion is supported by both inner shafts. It is preferable that the protrusions are formed between the portions and the protrusions are formed on each inner shaft support portion.

According to the above configuration, both dampers are engaged with the inner damper shaft provided on one of the outer shaft support portion and the inner shaft support portion adjacent thereto by engaging with the recess provided on the other. The plates are slidably connected to each other by the inner damper shafts to form a shut damper. A window portion is formed between the two inner shaft support portions. Therefore, the damper base can be assembled to the shut damper by inserting the protrusions formed on the inner shaft support portions into the bearing portions via the corresponding notches.

The shut damper is attached to the retainer by being supported by the retainer on both outer damper shafts.

According to the above-mentioned air conditioning register, it is possible to suppress the generation of wind noise when the ventilation path is closed by the shut damper.

In one embodiment, a perspective view of an air conditioning register with a part of the retainer removed. A side sectional view of an air conditioning register in one embodiment. FIG. 3 is a plan sectional view of an air conditioning register according to an embodiment. The exploded perspective view which shows a part component of the air-conditioning register in one Embodiment. Similarly, an exploded perspective view showing a part of the components of the air conditioning register in one embodiment. An exploded perspective view of the damper plate and the damper drive in one embodiment. The perspective view of the shut damper in one Embodiment. 8-8 cross-sectional view of FIG. The perspective view of the damper base in one Embodiment. (A) is a side sectional view showing a state in which a damper base is assembled to a shut damper in one embodiment, and (b) is a partial side sectional view showing a part of FIG. 10 (a) in an enlarged manner. A partial side sectional view showing a state before the protrusion in one embodiment is inserted into the bearing. The perspective view which shows the damper plate in the conventional shut damper, the damper base, and the damper drive in a rotation direction conversion mechanism disassembled.

Hereinafter, an embodiment embodied in an air-conditioning register for a vehicle will be described with reference to FIGS. 1 to 11.
In the following description, the traveling direction (forward direction) of the vehicle will be the front, the reverse direction will be the rear, and the height direction will be the vertical direction. Further, regarding the vehicle width direction (horizontal direction), the direction is defined based on the case where the vehicle is viewed from the rear.

In the passenger compartment, an instrument panel is provided in front of the front seats (driver's seat and passenger's seat) of the vehicle, and air-conditioning registers are incorporated in the central portion, side portions, etc. in the left-right direction thereof. The main functions of this air-conditioning register are to change the direction of the air-conditioning air sent from the air-conditioning device and blow out from the air outlet into the vehicle interior, and to adjust the amount of the air-conditioning air blown out. Adjusting the blowout amount includes blocking the blowout.

As shown in FIGS. 1 to 3, the air conditioning register 10 includes a retainer 11, a downstream fin group, an upstream fin group, a shut damper 40, and an operation knob 61. Note that in FIG. 1, the illustration of the most downstream portion of the retainer 11 is omitted. Next, the configuration of each part constituting the air conditioning register 10 will be described.

<Retainer 11>
The retainer 11 is for connecting the air duct (not shown) of the air conditioner and the opening (not shown) provided in the instrument panel. The internal space of the retainer 11 constitutes a flow path of the air conditioning air A1 (hereinafter referred to as "ventilation passage 12"). Here, regarding the flow direction of the air conditioning air A1, the side closer to the air conditioner is referred to as "upstream", "upstream side", etc., and the side far from the air conditioner is referred to as "downstream", "downstream side", etc. ..

The ventilation passage 12 is surrounded by four walls of the retainer 11. These four wall portions are composed of a pair of facing wall portions 13 facing each other in the left-right direction and a pair of facing wall portions 14 facing each other in the vertical direction. In the most downstream portion of the retainer 11, an air outlet 15 from which the air conditioning air A1 is blown out is formed at a location at the downstream end of the ventilation passage 12.

As shown in FIGS. 2, 3 and 8, the upstream portion in the retainer 11 and away from the left and right opposing wall portions 13 and the upper and lower opposing wall portions 14 is in the flow direction. A cylindrical portion 16 having both ends open is arranged. Plate portions 17 extending substantially in the vertical direction are arranged in the vicinity of both sides of the cylindrical portion 16 in the left-right direction. Each plate portion 17 is bridged between the upper and lower opposing wall portions 14. Each plate portion 17 and the cylindrical portion 16 are connected by a connecting portion 18 provided for each plate portion 17. The cylindrical portion 16 is supported by both plate portions 17 and both connecting portions 18. Locking protrusions 19 projecting outward in the radial direction are formed on the upper and lower portions of the outer peripheral surface of the cylindrical portion 16.

<Downstream fin group>
As shown in FIGS. 2 to 4, the downstream fin group includes a plurality of (two) downstream fins 21 and 22 arranged in a vertically separated state. The downstream fins 21 and 22 are used to change the blowing direction of the air conditioning air A1 from the air outlet 15 up and down. As shown in FIGS. 1, 3 and 4, downstream fin shafts 23 extending in the same direction are provided on both end faces of the downstream fins 21 and 22 in the left-right direction. The downstream fin shafts 23 for each of the downstream fins 21 and 22 are supported by the bearing portions 24 on the left and right opposing wall portions 13.

In each of the downstream fins 21 and 22, a connecting pin 25 is provided at a position deviated upstream from one of the downstream fin shafts 23 (on the right side in this embodiment). The connecting pins 25 for each of the downstream fins 21 and 22 are connected to each other by a vertical connecting rod 26 extending substantially in the vertical direction. The upper and lower downstream fins 21 and 22 are mechanically connected by the connecting pin 25 and the vertical connecting rod 26, and the lower downstream fins 22 have the same inclination as the upper downstream fins 21. A link mechanism LM1 that tilts in synchronization with the fin 21 is configured.

A tubular portion 27 having both ends open in the flow direction is formed in the middle portion in the left-right direction of the upper downstream fin 21. The tubular portion 27 has a flat shape having a large horizontal dimension with respect to the vertical dimension.

<Upstream fin group>
The upstream fin group consists of a plurality of upstream fins arranged on the upstream side of the downstream fin group in the retainer 11. Each upstream fin is used to change the blowing direction of the air conditioning air A1 from the air outlet 15 to the left or right. Most of the plurality of upstream fins are arranged in a state of being substantially parallel to each other at substantially equal intervals in the left-right direction.

Here, in order to distinguish a plurality of upstream fins, those adjacent to each other in the central portion in the left-right direction are referred to as "upstream fins 28", and the others are referred to as "upstream fins 29".

An upstream fin shaft 31 extending in the same direction is provided on both end faces of the upstream fins 28 and 29 in the vertical direction. The upstream fins 28 and 29 are supported by bearing portions (not shown) on both upstream fin shafts 31 so as to be tiltable with respect to the upper and lower opposing wall portions 14.

A notch 33 and a connecting pin 34 are provided at the downstream ends of the upstream fins 28 and 29, respectively. Each connecting pin 34 extends in the vertical direction at a portion of the notch 33 that is biased toward the downstream side from the upstream fin shaft 31. The connecting pins 34 for each of the upstream fins 28 and 29 are connected to each other by a horizontal connecting rod 35 extending substantially in the left-right direction. The link mechanism LM2 is configured by the connecting pin 34 and the lateral connecting rod 35 to tilt all the upstream fins 28 and 29 in a synchronized state so as to have the same inclination.

<Shut damper 40>
As shown in FIGS. 2, 3 and 5, the shut damper 40 is arranged on the upstream side of the upstream fin group in the retainer 11. The shut damper 40 includes a pair of upper and lower damper plates 41 and 51. Seal portions 41a and 51a, which are thinner and more flexible than the other parts of the damper plates 41 and 51, are formed around the damper plates 41 and 51. The damper plates 41 and 51 are tilted in opposite directions with the damper shaft whose axis extends in the left-right direction as a fulcrum to open and close the ventilation passage 12.

The damper plates 41 and 51 are arranged in a state of being separated from each other in the axial direction of the damper shaft (left-right direction in FIGS. 3 and 5), and include a pair of shaft support portions extending in the coaxial line direction.
One of the shaft support portions of the damper plates 41 and 51 is composed of outer shaft support portions 42 and 52 arranged at the ends of the shut damper 40 in the axial direction. The other shaft support portion of each of the damper plates 41 and 51 is composed of inner shaft support portions 45 and 55 arranged between the outer shaft support portions 42 and 52 of both damper plates 41 and 51.

The shut damper 40 has four damper shafts. The damper shafts are a pair of outer damper shafts 43 and 53 located at locations separated from each other in the axial direction, and a pair of inner dampers located at locations separated from each other in the same direction between the two outer damper shafts 43 and 53. It includes shafts 46 and 56.

The inner damper shafts 46 and 56 are provided in one of the outer shaft support portions 52 and 42 and the inner shaft support portions 45 and 55 adjacent to the outer shaft support portions 52 and 42, and the recesses 54 provided in the other. By engaging with, 44, both damper plates 41 and 51 are tiltably connected.

In the present embodiment, an outer shaft support portion 42 is formed at the right end portion of the upper damper plate 41. An outer damper shaft 43 projecting to the right is formed at the right end portion of the outer shaft support portion 42, and a recess 44 is formed at the left end portion. An outer shaft support portion 52 is formed at the left end portion of the lower damper plate 51. An outer damper shaft 53 projecting to the left is formed at the left end portion of the outer shaft support portion 52, and a recess 54 is formed at the right end portion. In the upper damper plate 41, an inner shaft support portion 45 is formed at a position adjacent to the right side of the outer shaft support portion 52. An inner damper shaft 46 protruding to the left is formed at the left end of the inner shaft support portion 45. In the lower damper plate 51, an inner shaft support portion 55 is formed at a position adjacent to the left side of the outer shaft support portion 42. An inner damper shaft 56 projecting to the right is formed at the right end of the inner shaft support portion 55.

Then, the inner damper shaft 56 is engaged with the recess 44, and the inner damper shaft 46 is engaged with the recess 54, so that both damper plates 41 and 51 are tiltably connected to form the shut damper 40. There is.

The shut damper 40 is supported by the outer damper shafts 43 and 53 with respect to the bearing portions 58 provided on the left and right opposing wall portions 13, respectively.
The two inner shaft support portions 45 and 55 are separated from each other at a predetermined distance in the left-right direction, and the window portion 50 for arranging the damper base 70 described later is provided by the space between the two inner shaft support portions 45 and 55. (See FIG. 7) is formed. The window portion 50 is located in the area of the shut damper 40 including the axes of the outer damper shafts 43 and 53 and the inner damper shafts 46 and 56.

Each of the damper plates 41 and 51 has a fully open position shown by a solid line in FIG. 2 and a fully closed position shown by a two-dot chain line in FIG. 2 with its own outer damper shafts 43 and 53 and inner damper shafts 46 and 56 as fulcrums. It is possible to tilt in opposite directions between them.

<Operation knob 61>
As shown in FIGS. 1 to 3, the operation knob 61 is a member operated by an occupant when tilting the downstream fins 21 and 22, the upstream fins 28 and 29, and the shut damper 40, respectively. The operation knob 61 is configured by assembling a plurality of members. These members are broadly composed of one that constitutes the knob body 62 and one that constitutes the rotating portion 65. The knob body 62 is slidably mounted in the left-right direction with respect to the tubular portion 27 of the upper downstream fin 21.

As shown in FIGS. 2, 3 and 5, the rotating portion 65 includes a knob portion 66 and a shaft portion 67. The shaft portion 67 is rotatably inserted through the knob body 62, and the knob portion 66 is integrally rotatably connected to the downstream end portion thereof.

Further, the following configuration is adopted to transmit the movement of the operation knob 61 to each of the both upstream fins 28 and the shut damper 40 and tilt them. This mechanism includes a rotation direction changing mechanism TM1 for changing the rotation direction of the operation knob 61 and transmitting it to the damper plates 41 and 51. The rotation direction changing mechanism TM1 includes a transmission shaft 68, an arm portion 47 provided on the upper damper plate 41, an arm portion 57 provided on the lower damper plate 51, a damper drive 81, and a joint portion J1, It is equipped with J2.

As shown in FIGS. 2 and 4, a transmission portion 36 having a vertically long transmission hole 37 extending in the flow direction is formed in a portion of the horizontal connecting rod 35 located between the two upstream fins 28.

As shown in FIGS. 2, 3 and 5, the transmission shaft 68 extends along the flow direction and is inserted through the transmission unit 36. A disc-shaped contactor 69 is formed at the insertion point of the transmission shaft 68 into the transmission hole 37.

The upper arm portion 47 extends from the intermediate portion in the left-right direction to the downstream side in the upper damper plate 41. The arm portion 47 is curved so as to bulge upward, and has a sliding end portion 47a having a spherical surface at a downstream end portion which is its own tip portion. The lower arm portion 57 extends from the intermediate portion in the left-right direction to the downstream side in the lower damper plate 51. The arm portion 57 is curved so as to bulge downward, and has a sliding end portion 57a having a spherical surface at a downstream end portion which is its own tip portion.

A damper base 70 that plays the following roles is arranged in the window portion 50.
-Supports the damper drive 81.
-The arm portions 47 and 57 and the damper drive 81 are accurately connected.

The damper base 70 extends in the flow direction, has both ends open, and has a substantially cylindrical shape having a diameter larger than that of the cylindrical portion 16 (see FIG. 8) of the retainer 11.
As shown in FIGS. 5, 8 and 9, slits 71 extending from the downstream end face to the upstream side are formed in the downstream portions on both the left and right sides of the damper base 70, respectively.

Further, locking holes 72 are formed in the upper portion and the lower portion of the damper base 70, respectively, in the intermediate portion in the flow direction (see FIG. 2). Slits 73 extending from the downstream end face to the upstream side are formed at the upper and lower portions of the damper base 70 where the locking holes 72 are sandwiched from both sides in the circumferential direction of the damper base 70. The upper and lower parts of the damper base 70, which have the locking holes 72 and are sandwiched by the pair of slits 73, are the locking portions 74 to which the locking protrusions 19 of the cylindrical portion 16 are locked. It is configured. Since each locking portion 74 is sandwiched by a pair of slits 73, it is more likely to bend in the vertical direction than when the slit 73 is not formed.

Further, recesses 75 recessed from the upstream end face toward the downstream side are formed in the upstream portions in the upper portion and the lower portion of the damper base 70, respectively. Both recesses 75 are locations where the sliding end portions 47a and 57a of the damper plates 41 and 51 enter.

Then, as shown in FIGS. 2, 3 and 8, the damper base 70 covers the cylindrical portion 16 from the outside. Further, the corresponding connecting portion 18 is fitted to the pair of left and right slits 71, and the pair of upper and lower locking protrusions 19 are locked in the corresponding locking holes 72, whereby the damper base 70 Is non-rotatably attached to the cylindrical portion 16.

Although not particularly described in the section of the prior art, the mounting structure of the damper base 70 to the cylindrical portion 16 is similarly adopted in the conventional air conditioning register. Therefore, the conventional damper base 107 is also formed with portions corresponding to the locking portions 74 having slits 71 and 73 and locking holes 72. In other words, as the mounting structure of the damper base 70 to the cylindrical portion 16 in the present embodiment, the same structure as before is used.

As shown in FIGS. 3, 9 and 10 (a) and 10 (b), the damper base 70 is supported by the support mechanism SM1 with respect to the damper plates 41 and 51. The support mechanism SM1 is composed of a protrusion 76, a bearing portion 77, and a notch portion 78, which are provided in pairs.

Both protrusions 76 project from the opposing surfaces of the pair of inner shaft support portions 45, 55 constituting the window portion 50 toward the opposite inner shaft support portions 55, 45. When the direction orthogonal to the flow direction and the axis of the damper axis (vertical direction in this embodiment) is the orthogonal direction, the dimensions of each protrusion 76 become smaller in the orthogonal direction (vertical direction) toward the downstream side. It has a shape.

Both bearing portions 77 are formed at the upstream end portion of the damper base 70. The inner wall surface of each bearing portion 77 has a substantially arc shape. Each notch 78 is formed at the upstream end of the damper base 70, and communicates the upstream end surface of the damper base 70 with each bearing 77. Each notch 78 has facing surfaces 78a facing each other in the orthogonal direction. Each facing surface 78a is inclined with respect to the flow direction so that the distance D1 between the two facing surfaces 78a (see FIG. 10B) becomes smaller toward the downstream side.

As shown in FIG. 11, the dimension M1 in the orthogonal direction at the boundary portion of each bearing portion 77 with each notch portion 78 is set to be larger than the dimension M2 in the orthogonal direction at the downstream end of each protrusion portion 76. Has been done. The dimension M1 is set to be smaller than the dimension M3 in the orthogonal direction at the upstream end of each protrusion 76.

Then, each protrusion 76 is inserted into the corresponding bearing portion 77, so that the protrusion 76 is supported by the bearing portion 77.
As shown in FIGS. 5 and 9, an annular protrusion 79 is formed on the inner peripheral surface of the damper base 70 at the intermediate portion in the flow direction over the entire circumference.

As shown in FIGS. 2, 3 and 6, the damper drive 81 includes a rotation support portion 82 and a cam portion 83 formed on the upstream side of the rotation support portion 82. The rotation support portion 82 has a substantially cylindrical shape extending in the flow direction, and has a flange portion 84 on the entire circumference of the outer peripheral surface of the upstream end portion. The downstream end of the rotation support portion 82 is open. The cam portion 83 has a cam groove 83a on the outer surface. In the present embodiment, the cam groove 83a is formed on the outer surface of the damper drive 81 over the entire circumference and has an endless shape.

The rotation support portion 82 of the damper drive 81 is arranged in the cylindrical portion 16. The flange portion 84 is sandwiched from both sides in the flow direction by the annular protrusion 79 of the damper base 70 and the upstream end portion of the cylindrical portion 16, so that the damper drive 81 is rotatably mounted on the damper base 70. ing. Further, the damper drive 81 is positioned in the flow direction by the sandwiching.

The cam groove 83a is located upstream of the annular protrusion 79. Then, the sliding ends 47a and 57a of each of the damper plates 41 and 51 that have entered the recess 75 of the damper base 70 are slidably engaged with the cam groove 83a.

As shown in FIGS. 2, 3 and 5, the joint portion J1 connects the downstream end portion of the transmission shaft 68 to the rotating portion 65 of the operation knob 61 so as to be bendable and rotationally transmitable. The joint portion J2 connects the upstream end portion of the transmission shaft 68 to the damper drive 81 so as to be bendable and rotationally transmitable.

Next, the operation of the present embodiment configured as described above will be described. In addition, the effects caused by the action will also be described.
First, the action when forming the shut damper 40 will be described.

In this case, as shown in FIGS. 3 and 5, the inner damper shaft 56 of the inner shaft support portion 55 is engaged with the recess 44 of the outer shaft support portion 42, and the recess of the outer shaft support portion 52. The inner damper shaft 46 of the inner shaft support portion 45 is engaged with the 54. By these engagements, both damper plates 41 and 51 are rotatably connected to each other to form a shut damper 40. Further, with the above connection, a window portion 50 is formed between the two inner shaft support portions 45 and 55.

Next, the operation when the damper base 70 is assembled to the shut damper 40 will be described. In this case, as shown in FIGS. 10 (a), 10 (b) and 11, the damper is provided so that the corresponding notch 78 approaches both the protrusions 76 in the window 50 (see FIG. 7). The base 70 and the shut damper 40 are brought close to each other. Along with this, each protrusion 76 enters the corresponding notch 78.

In the present embodiment, each protrusion 76 has a shape in which the dimension in the orthogonal direction (vertical direction) becomes smaller toward the downstream side, that is, closer to the notch 78. Therefore, the protrusion 76 easily enters the notch 78.

When the damper base 70 and the shut damper 40 are brought close to each other with each protrusion 76 inserted into the corresponding notch 78, the protrusion 76 is inserted into the bearing portion 77, and the protrusion 76 is inserted into the bearing portion 77. It becomes a state supported by.

In the present embodiment, the dimension M1 at the boundary portion of each bearing portion 77 with each notch portion 78 is larger than the dimension M2 at the downstream end of each protrusion portion 76. Therefore, the downstream end of each protrusion 76 easily passes through the boundary portion of each bearing portion 77.

Further, the pair of facing surfaces 78a in each notch 78 are inclined with respect to the flow direction so that the distance D1 between the two facing surfaces 78a becomes smaller toward the downstream side. Therefore, when the damper base 70 and the shut damper 40 are brought close to each other in a state where each protrusion 76 is inserted into the corresponding notch 78, the protrusion 76 is guided into the bearing portion 77 by the facing surface 78a. The protrusion 76 can be smoothly inserted into the bearing portion 77.

Further, in the present embodiment, the dimension M1 is smaller than the dimension M3 at the upstream end of each protrusion 76. Therefore, as shown in FIG. 10B, when the protrusion 76 is inserted into the bearing portion 77, the downstream end of the notch 78 is in the direction orthogonal to the upstream end of the protrusion 76. Wrap. Therefore, the protrusion 76 is difficult to come out from the bearing portion 77.

Therefore, unlike the conventional damper base 107, which requires a slit 111 for easily elastically deforming the support portion 112 in which the bearing hole 109 is formed, the four slits 111 shown by the alternate long and short dash line in FIG. 9 are not provided. The damper base 70 can be assembled to the shut damper 40. As a result, the slit 111 for improving the assembling property of the damper base 70 to the shut damper 40 becomes unnecessary, and the number of slits in the damper base 70 is reduced accordingly.

The shut damper 40 is arranged between the left and right opposing wall portions 13 of the retainer 11, and is supported by the facing wall portions 13 by the bearing portions 58 on the outer damper shafts 43 and 53. As described above, both damper plates 41 and 51 are supported by the inner damper shafts 46 and 56 so as to be tiltable to each other. Therefore, each of the damper plates 41 and 51 can be tilted in opposite directions with the outer damper shafts 43 and 53 and the inner damper shafts 46 and 56 as fulcrums to open and close the ventilation passage 12.

The two-dot chain line and FIG. 7 in FIG. 2 show the state when both damper plates 41 and 51 are in the fully closed position. In this state, the upper damper plate 41 is inclined so as to be higher toward the upstream side, and comes into contact with the upper facing wall portion 14 at the seal portion 41a. The lower damper plate 51 is inclined so as to be lower toward the upstream side, and comes into contact with the lower facing wall portion 14 at the seal portion 51a. Both damper plates 41 and 51 are in a bent state with the outer damper shafts 43 and 53 and the inner damper shafts 46 and 56 as fulcrums. The ventilation passage 12 is closed by both damper plates 41 and 51. The flow of the air conditioning air A1 is cut off downstream of both damper plates 41 and 51 of the ventilation passage 12, and the blowing of the air conditioning air A1 from the air outlet 15 is stopped.

At this time, if the air conditioning air A1 flowing into the window portion 50 passes through the damper base 70 in the thickness direction thereof, a wind noise may be generated. However, in the present embodiment, as described above, the number of slits through which the air conditioning air A1 can pass is smaller than in the conventional case. Therefore, since the number of slits is reduced, it is possible to suppress the generation of wind noise due to the air conditioning air A1 passing through the slits.

On the other hand, the solid line in FIG. 2 shows the state when both damper plates 41 and 51 are in the fully open position. In this state, the damper plates 41 and 51 are both substantially parallel to the upper and lower opposing wall portions 14. Both damper plates 41 and 51 are in a state of overlapping in the vertical direction, and the ventilation passage 12 is greatly opened. The air conditioning air A1 flows separately on the upper side of the damper plate 41 and the lower side of the damper plate 51. The air-conditioning air A1 that has passed through both damper plates 41 and 51 flows along the upstream fin group, the downstream fin group, and the like, and then blows out from the air outlet 15.

The switching from the fully closed position to the fully open position and the switching from the fully open position to the fully closed position of the shut damper 40 are performed through the rotation operation of the knob 66 on the operation knob 61, as shown in FIGS. 2 and 3. When the knob portion 66 is rotated by an occupant, the rotation of the knob portion 66 is transmitted to the damper drive 81 via the joint portion J1 on the downstream side, the transmission shaft 68, and the joint portion J2 on the upstream side. The damper drive 81 rotates, and the cam groove 83a also rotates accordingly.

As the cam groove 83a rotates, the positions where the sliding end portions 47a and 57a of each of the arm portions 47 and 57 engage with the cam groove 83a change. As both engagement positions change, the damper plates 41 and 51 rotate in opposite directions between the fully open position and the fully closed position, with the outer damper shafts 43 and 53 and the inner damper shafts 46 and 56 as fulcrums. Each is tilted to. The rotation direction and the tilt direction of the rotating portion 65 of the operation knob 61 and both damper plates 41 and 51 are different from each other, but the rotation direction of the rotating portion 65 is changed by passing through the rotation direction conversion mechanism TM1 as described above. Then, it is transmitted to the damper plates 41 and 51, and the damper plates 41 and 51 are tilted, respectively. Due to these tilts, the opening degree of the ventilation passage 12 changes. The amount of air conditioning air A1 passing through the shut damper 40 in the ventilation passage 12 can be adjusted.

When a force is applied to the operation knob 61 in the vertical direction, the upper downstream fin 21 is tilted with the downstream fin shaft 23 as a fulcrum. This tilt is transmitted to the lower downstream fin 22 via the link mechanism LM1. By this transmission, the lower downstream fin 22 is tilted toward the operated side of the operation knob 61 in synchronization with the upper downstream fin 21. Both the operation knob 61 and the downstream fins 21 and 22 are in an inclined state. The air-conditioning air A1 flows along the downstream fins 21 and 22 that are inclined as described above, so that the air can be turned and directed in the direction in which the operation knob 61 is inclined from the outlet 15 diagonally upward or diagonally downward. And blow out.

Further, when a force toward the left or right is applied to the operation knob 61, the operation knob 61 is slid in the same direction together with the joint portion J1 on the downstream side. Therefore, the transmission shaft 68 swings in the above direction with its upstream end as a fulcrum. The swing of the transmission shaft 68 is transmitted to the lateral connecting rod 35. This is because the contact 69 of the transmission shaft 68 comes into contact with the left and right inner wall surfaces of the transmission hole 37 in the transmission portion 36 due to the swing, and the force is transmitted between the contact 69 and the transmission portion 36. is there. The transmission portion 36 moves in the above direction together with the other portion of the lateral connecting rod 35. This movement is transmitted to the upstream fins 28 and 29. As a result, the upstream fins 28 and 29 tilt with the upstream fin shaft 31 as a fulcrum. The air-conditioning air A1 flows along the upstream fins 28 and 29 tilted as described above, so that the air can be turned and blown out from the air outlet 15 in the same direction as the movement direction of the operation knob 61.

By operating the operation knob 61 having the rotating portion 65 in this way, the downstream fins 21 and 22, the upstream fins 28 and 29, and the shut damper 40 can be tilted, respectively.
In addition, the above-described embodiment can also be implemented as a modified example in which this is modified as follows.

-The operation knob 61 may be provided at least rotatably. Therefore, the operation knob 61 may, for example, rotate only with respect to the downstream fin 21 without sliding.

In the above embodiment, the dimension M2 at the downstream end of each protrusion 76 is the same as the dimension M1 at the boundary portion of each bearing portion 77 with each notch portion 78, or is slightly larger than the dimension M1. May be good.

The protrusions 76 may be formed in a shape in which the dimensions M2 and M3 in the orthogonal direction are constant in the flow direction.
-Only one facing surface 78a in the notch 78 may be inclined with respect to the flow direction.

-Both facing surfaces 78a may be formed in parallel so that the interval D1 is constant in the flow direction.
Contrary to the above embodiment, the inner damper shafts 46 and 56 are provided on the outer shaft support portions 52 and 42, and are engaged with the recesses provided on the inner shaft support portions 45 and 55 to cause both dampers. The plates 41, 51 may be connected so as to be tiltable.

Contrary to the above embodiment, the outer damper shafts 43 and 53 are provided on both facing wall portions 13, the bearing portions are provided on the outer shaft support portions 42 and 52, and the shut damper 40 is provided on the bearing portion as the outer damper shaft 43. , 53 may be tiltably supported.

The downstream fins 21 and 22 may be formed of a plate-like body extending in the vertical direction and the flow direction of the air conditioning air A1 in the ventilation passage 12, respectively. Further, the upstream fins 28 and 29 may be formed of a plate-like body extending in the left-right direction and the flow direction of the air conditioning air A1 in the ventilation passage 12, respectively.

-The above-mentioned air-conditioning register 10 can also be applied to an air-conditioning register provided in a place different from the instrument panel in the vehicle interior.
The air-conditioning register 10 blows out the air-conditioning air A1 sent from the air-conditioning device into the room by changing the direction of the air-conditioning air A1 by the upstream fins 28 and 29 and the downstream fins 21 and 22, and shuts off the blowout by the shut damper 40. As long as it can be used, it can be widely applied not only to vehicles.

10 ... Air conditioning register, 11 ... Retainer, 12 ... Ventilation path, 40 ... Shut damper, 41, 51 ... Damper plate, 42, 52 ... Outer shaft support (a part of the shaft support), 43, 53 ... Outer damper shaft (part of the damper shaft), 44, 54 ... recessed, 45, 55 ... inner shaft support (part of the shaft support), 46, 56 ... inner damper shaft (one of the damper shafts) , 50 ... window, 61 ... operation knob, 70 ... damper base, 76 ... protrusion, 77 ... bearing, 78 ... notch, 78a ... facing surface, A1 ... air conditioning air, D1 ... spacing , M1, M2, M3 ... Dimensions, SM1 ... Support mechanism, TM1 ... Rotation direction conversion mechanism.

Claims (5)

A shut damper arranged in the ventilation path of the air conditioning air in the retainer, an operation knob provided at least rotatably, and a rotation direction changing mechanism for changing the rotation direction of the operation knob and transmitting it to the shut damper. With
The shut damper includes a pair of damper plates that are tilted in opposite directions with the damper shaft as a fulcrum by a force transmitted from the rotation direction changing mechanism to open and close the ventilation passage.
A window portion is formed between the two damper plates in a region including the axis of the damper shaft, and the window portion is a cylinder attached to the retainer and extending in the flow direction of air conditioning air in the ventilation passage. A damper base having a shape is arranged, a part of the rotation direction changing mechanism is rotatably arranged in the damper base, and the damper base is an air conditioning register supported on both damper plates by a support mechanism.
The support mechanism includes a protrusion that projects from each of the window portions facing each other in the axial direction of the damper shaft toward the opposite surface side, and a pair that is formed on the damper base to support the protrusion. An air-conditioning register including a bearing portion of the above, and a notch portion for communicating the upstream end surface of the damper base in the flow direction with each bearing portion. When the direction orthogonal to the flow direction and the axis of the damper axis is an orthogonal direction,
The air-conditioning register according to claim 1, wherein each protrusion has a shape in which the dimension in the orthogonal direction becomes smaller toward the downstream side in the flow direction. The dimensions in the orthogonal direction at the boundary portion of each bearing portion with each notch portion are larger than the dimensions in the orthogonal direction at the downstream end of each protrusion portion in the flow direction, and each protrusion in the flow direction. The air-conditioning register according to claim 2, which is set to be smaller than the dimension in the orthogonal direction at the upstream end of the portion. When the direction orthogonal to the flow direction and the axis of the damper axis is an orthogonal direction,
Each notch has a facing surface facing in the orthogonal direction.
The air-conditioning register according to any one of claims 1 to 3, wherein each facing surface is inclined with respect to the same flow direction so that the distance between the two facing surfaces becomes smaller toward the downstream side in the flow direction. Each damper plate is arranged so as to be separated from each other in the axial direction, and each includes a pair of shaft supports extending in the coaxial line direction.
One shaft support portion of each damper plate is composed of an outer shaft support portion arranged at the end portion of the shut damper in the axial direction, and the other shaft support portion is of the outer shaft support portion of both damper plates. Consists of an inner shaft support located between
The damper shaft includes a pair of outer damper shafts located at locations separated from each other in the axial direction, and a pair of inner damper shafts located at locations separated from each other in the same direction between the two outer damper shafts.
Each inner damper shaft is provided on one of the outer shaft support portion and the inner shaft support portion adjacent to the outer shaft support portion, and is engaged with a recess provided on the other to cause both dampers. The plates are connected so that they can be tilted,
The shut damper is supported by the outer damper shaft provided between the outer shaft support portion and the retainer so as to be tiltably supported by the retainer.
The air-conditioning register according to any one of claims 1 to 4, wherein the window portion is formed between both inner shaft support portions, and the protrusion portion is formed on each inner shaft support portion.