JP5886021B2 - Air conditioning register - Google Patents

Description

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

  An air conditioning register for changing the direction of air conditioning air sent from the air conditioner and blown into the passenger compartment is incorporated in the instrument panel of the vehicle (see, for example, Patent Document 1). This air-conditioning register includes a case and fins as basic components. The case has a cylindrical shape, and its internal space serves as a ventilation path for air for air conditioning. In this case, a part of wall part surrounding the said ventilation path is comprised by a pair of opposing wall part which mutually opposes. Cylindrical shaft holes are provided at locations of the opposing wall portions facing each other.

  The fin includes a fin portion and a pair of shaft portions. The fin portion has a plate shape and is disposed in the case. Both shaft portions extend in opposite directions from the fin portion and are inserted into the shaft holes of the opposing wall portions. The fin is supported by the both opposing wall portions so as to be tiltable at both shaft portions. And the blowing direction from the case of the air for air conditioning is changed because the inclination of a fin is changed by the said inclination.

  In this air-conditioning register, it is important to manage the gap between the shaft portion and the inner wall surface of the shaft hole. Normally, the gap is set small in order to prevent the shaft portion of the fin from rattling in the shaft hole. ing.

  Patent Document 2 describes a related technique for the shaft portion and the shaft hole.

JP-A-8-99527 JP 2002-139019 A

  However, at least the peripheral portion of the shaft hole through which the shaft portion is inserted and the shaft portion in the case are formed of a hard resin material. For this reason, when the gap is managed as described above, rattling can be suppressed. However, in the initial use of the air-conditioning register, the shaft portion and the inner wall surface of the shaft hole rub against each other when the fin is tilted. Produces abnormal noise. This abnormal noise gradually decreases as the fins are repeatedly tilted. However, the resin scraps are generated by the tilting of the fins, and the scraps are wound between the shaft portion and the inner wall surface of the shaft hole along with the tilting of the fins, and noise is generated again.

  As countermeasures against this, it is possible to interpose grease between the shaft portion and the inner wall surface of the shaft hole, or to form at least the peripheral portion of the shaft hole with a softer resin material than the shaft portion in the case. Done.

  However, since such a measure involves an increase in the cost of the air conditioning register, in many cases, it is performed only on one of the pair of shaft portions. For this reason, abnormal noise still occurs in the shaft portion on which no countermeasure is taken.

  Moreover, in the said patent document 1, since the axial part is tapered so that it may taper, the contact area of an axial part and the inner wall face of an axial hole is small, and the suppression effect of abnormal noise generation | occurrence | production in the initial stage of use is anticipated. Although it is possible, it is difficult to suppress the generation of abnormal noise due to the entrapment of shavings.

  In Patent Document 2, it is described that a rib protruding in the center direction of the shaft portion is formed in the shaft hole, but this rib is provided to reduce the operating force, In the case of managing a slight gap between the shaft portion and the inner wall surface of the shaft hole with high accuracy, it is not provided for suppressing the generation of abnormal noise.

  The present invention has been made in view of such circumstances, and the object thereof is air conditioning capable of suppressing both the generation of abnormal noise in the initial stage of use and the generation of abnormal noise resulting from the entrapment of shavings. Is to provide a register.

In order to achieve the above object, the invention according to claim 1 is characterized in that the internal space is a ventilation path for air for air conditioning, and a part of the wall part surrounding the ventilation path is a pair of opposing wall parts facing each other. A cylindrical case in which cylindrical shaft holes are provided at opposite positions of the opposing wall portions, a plate-like fin portion disposed in the case, and the fin portion. A pair of shaft portions extending in opposite directions to be inserted into the shaft holes for each of the opposed wall portions are provided, and the shaft portions are provided with fins that are tiltably supported by the opposed wall portions. An air-conditioning register in which the direction of blowing the air-conditioning air from the case is changed by changing the inclination of the fin, wherein at least one of the pair of shaft portions is narrower than the shaft hole. A columnar shaft main body, and It is constituted by a specific shaft portion including a bulging portion that bulges radially outward from a part of the outer peripheral surface located in the shaft hole of the main body, and comes into contact with the inner wall surface of the shaft hole, At least the peripheral portion of the shaft hole through which the specific shaft portion is inserted in the opposing wall portion, and the specific shaft portion are formed of a hard resin material, and the specific shaft portion and the inner wall surface of the shaft hole At a location adjacent to the bulging portion, there is provided a shaving residue processing portion that allows the passage of the shaving residue generated by the tilting of the fin or accommodates the shaving residue, and The portion is configured by an annular protrusion provided in an annular shape over the entire outer periphery of the shaft main body, and the inner wall surface of the shaft hole at a portion that bulges most from the outer peripheral surface of the shaft main body. this is intended to contact line over the entire circumference of the The the gist.

  According to said structure, in the air-conditioning register | resistor, the clearance gap between the inner wall surface of the axial hole in the opposing wall part of a case and the bulging part of the specific axial part in a fin is few. Therefore, the movement of the specific shaft portion in the shaft hole is restricted by the inner wall surface. By this restriction, rattling of the specific shaft portion in the shaft hole is suppressed.

  In the air-conditioning register, the air-conditioning air is blown out of the case after flowing along the fins when passing through the ventilation path in the case. On the other hand, when the fin is tilted with the shaft portion inserted through the shaft hole as a fulcrum, the tilt changes. During this tilting, the bulging portion slides on the inner wall surface of the shaft hole at the specific shaft portion. The bulging portion bulges radially outward from a part of the outer peripheral surface located in the shaft hole of the shaft main body. Therefore, the bulging portion is not provided, and the contact area of the specific shaft portion with respect to the inner wall surface is small as compared with the case where the entire outer peripheral surface located in the shaft hole of the shaft portion contacts the inner wall surface of the shaft hole.

Then, when the inclination is changed by tilting the fin, the air-conditioning air flows in a direction corresponding to the inclination of the fin and is blown out of the case.
Here, at least the peripheral portion of the shaft hole through which the specific shaft portion is inserted and the specific shaft portion of the opposing wall portion are formed of a hard resin material. For this reason, when the specific shaft portion slides in the shaft hole, hard members are rubbed with each other and noise is likely to occur.

  However, in the first aspect of the invention, as described above, the contact area of the specific shaft portion with the inner wall surface of the shaft hole is small. Therefore, when the fin is tilted in the initial stage of use of the air-conditioning register, it is difficult for abnormal noise to occur even though the hard members rub against each other.

In addition, when resin scraps are generated due to repeated tilting of the fins, the scraps are provided between the specific shaft portion and the inner wall surface of the shaft hole and adjacent to the bulging portion. It passes through or is accommodated in the shaving residue processing section. Therefore, the shaving residue is not easily caught between the bulging portion and the inner wall surface of the shaft hole as the fins are tilted, and abnormal noise due to the winding is less likely to occur.
Further, the annular protrusion (bulged portion) provided in an annular shape over the entire circumference of the outer peripheral surface of the shaft main body is a line extending over the entire circumference of the inner wall surface of the shaft hole at a location where the largest protrusion is caused from the outer peripheral surface of the shaft main body. Since it contacts, the contact area of the specific axial part with respect to the inner wall surface of a shaft hole is very small. Therefore, in the initial use of the air-conditioning register, abnormal noise is unlikely to occur when the specific shaft portion slides in the shaft hole.

  The invention according to claim 2 is the invention according to claim 1, wherein one of the pair of shaft portions is configured by the specific shaft portion, and the other is configured by a normal shaft portion not having the bulging portion. In the opposing wall portion, at least the peripheral portion of the shaft hole through which the normal shaft portion is inserted is formed of a resin material softer than the normal shaft portion.

  According to the above configuration, when the fin is tilted, in the normal shaft portion, the entire outer peripheral surface located in the shaft hole slides on the inner wall surface of the coaxial hole. At this time, the contact area with the inner wall surface of the normal shaft portion is larger than the contact area with the inner wall surface of the specific shaft portion. However, at least the peripheral portion of the shaft hole is usually made of a resin material that is softer than the shaft portion. Therefore, when the normal shaft portion slides in the shaft hole, the normal shaft portion and the inner wall surface of the shaft hole that is softer than the normal shaft portion rub against each other, and it is difficult to generate noise.

  When the fin is tilted, a sliding resistance is usually generated between the shaft portion and the inner wall surface of the shaft hole. For this reason, when an operation for tilting the fin is performed, an operation load due to the sliding resistance is applied, and the operation feeling is improved.

According to a third aspect of the present invention, in the first or second aspect of the invention, the outer peripheral surface of the annular protrusion is configured by a part of a spherical surface centered on the axis of the specific shaft portion. The gist.
If the outer peripheral surface of the annular protrusion is constituted by a part of a spherical surface centered on the axis of the specific shaft portion as in the invention according to claim 3 , the annular protrusion is the shaft main body of the outer peripheral surface. Line contact is made over the entire circumference of the inner wall surface of the shaft hole at the most bulged portion from the outer circumferential surface.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the pair of opposed wall portions are arranged in a state of being opposed to each other in the vertical direction, The opposing wall portion extends in the vertical direction, the specific shaft portion extends in the vertical direction and is inserted into the shaft hole, and the shaving residue processing portion includes the specific shaft portion and the inner wall surface of the shaft hole. The gist of the present invention is that the space is lower than the annular protrusion.

  According to the above configuration, when a scrap is generated due to repeated tilting of the fin, the scrap is between the specific shaft portion and the inner wall surface of the shaft hole due to its own weight, and from the annular protrusion. Also passes through the lower shavings processing section and is discharged to the outside of the shaft hole. Therefore, it is difficult for the scrap to be caught between the annular protrusion (the bulging portion) and the inner wall surface of the shaft hole as the fin tilts.

According to a fifth aspect of the present invention, the internal space is a ventilation path for air-conditioning air, a part of the wall portion surrounding the ventilation path is constituted by a pair of opposed wall parts facing each other, and the both opposed faces A cylindrical case in which cylindrical shaft holes are provided at opposite locations of the wall portion, a plate-like fin portion disposed in the case, and the opposing wall extending in opposite directions from the fin portion A pair of shaft portions that are inserted into the shaft holes for each portion are provided, and the shaft portion includes a fin that is tiltably supported by the opposing wall portion, and the tilt of the fin is changed by the tilting. The air-conditioning register in which the blowing direction of the air-conditioning air from the case is changed, wherein at least one of the pair of shaft portions is a columnar shaft body formed narrower than the shaft hole, and Positioned in the shaft hole of the shaft body Swelled radially outward from a part of the outer peripheral surface, and a swelled portion that comes into contact with the inner wall surface of the shaft hole. At least the peripheral portion of the inserted shaft hole and the specific shaft portion are formed of a hard resin material, and are between the specific shaft portion and the inner wall surface of the shaft hole, and the bulging portion Is provided with a shaving residue processing section that allows or accommodates the shavings generated by tilting of the fins, and the shaft body has a cylindrical shape, and the bulge The portion is configured by a pair of protrusions provided on the outer peripheral surface of the shaft main body and spaced apart from each other in the circumferential direction, and the scraped scrap processing portion includes the specific shaft portion and the shaft hole. Adjacent to the inner wall surface of the shaft body in the circumferential direction of the shaft body Cormorant space is constituted by between ridges, wherein the two ridges are on the outer circumferential surface of the shaft body, with provided at equal angular intervals in the circumferential direction, across the axis of the particular shaft portion The gist is that they are formed in a spiral shape facing each other.

  According to said structure, the specific axial part penetrated by the axial hole is an axis | shaft in the some protrusion (bulging part) provided in the location spaced apart from the circumferential direction on the outer peripheral surface of the axial main body. Contact the inner wall of the hole. These contacts facilitate positioning of the specific shaft portion at the center portion of the shaft hole, and a slight gap between the specific shaft portion and the inner wall surface of the shaft hole can be managed with high accuracy.

  In addition, when scraping scraps are generated due to repeated tilting of the fins, the scraping scraps are between the specific shaft portion and the inner wall surface of the shaft hole, and between the adjacent ridges in the circumferential direction of the shaft body. It is accommodated in the shaving residue processing part. Therefore, the shaving residue is not easily caught between the ridge (bulging portion) and the inner wall surface of the shaft hole as the fin tilts.

Further , the specific shaft portion inserted through the shaft hole is in contact with the inner wall surface of the shaft hole on a plurality of protrusions provided on the outer peripheral surface of the shaft main body at equal angles in the circumferential direction. These contacts make it easier to position the specific shaft part at the center of the shaft hole than when the protrusions are not provided at equal angles, and a slight gap between the specific shaft part and the inner wall surface of the shaft hole. Can be managed with higher accuracy.

In addition, the bulging portion is configured by a small number of protrusions that are opposed to each other across the axis of the specific shaft portion on the outer peripheral surface of the shaft body. However, the pair of ridges formed in a spiral shape comes into contact with the inner wall surface of the shaft hole at more locations in the circumferential direction than when parallel to the axis of the specific shaft portion. Therefore, although the bulging part is composed of the minimum number of protrusions, it becomes easier to position the specific shaft part at the center part of the shaft hole, and a small gap between the specific shaft part and the inner wall surface of the shaft hole is highly accurate. It is possible to manage with.

  According to the air conditioning register of the present invention, at least one of the pair of shaft portions for each fin is constituted by the specific shaft portion including the shaft main body and the bulging portion, and between the specific shaft portion and the inner wall surface of the shaft hole. In addition, since the shaving residue processing portion is provided at a location adjacent to the bulging portion, it is possible to suppress both the occurrence of abnormal noise in the initial stage of use and the occurrence of abnormal noise due to the entrapment of the shaving residue.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment which actualized this invention, (A) is a fragmentary sectional side view which shows schematic structure of the register | resistor for an air conditioning, (B) is the partial expansion side which expands and shows the principal part in (A) Sectional drawing. It is a figure which shows the example of a change of a specific axial part, (A) is a fragmentary perspective view of a specific axial part, (B) is a partial top view which shows the peripheral part of a specific axial part and an axial hole. It is a figure which shows the example of a change of a specific axial part, (A) is a fragmentary perspective view of a specific axial part, (B) is a partial top view which shows the peripheral part of a specific axial part and an axial hole. It is a figure which shows the example of a change of a specific axial part, (A) is a fragmentary perspective view of a specific axial part, (B) is a partial plane sectional view which shows the peripheral part of a specific axial part and an axial hole. The partial perspective view which shows the example of a change of a specific axial part.

Hereinafter, an embodiment in which the present invention is embodied in a vehicle air-conditioning register will be described with reference to FIGS.
In the following description, it is assumed that the traveling direction (forward direction) of the vehicle is the front, the backward direction is the rear, and the height direction is the vertical direction. Moreover, about the vehicle width direction (left-right direction), the left-right direction is prescribed | regulated on the basis of the case where a vehicle is seen from back.

  In the passenger compartment, an instrument panel is provided in front of the front seats (driver's seat and front passenger seat) of the vehicle, and the air-conditioning register according to the present embodiment is incorporated in the center and both sides in the vehicle width direction. ing. One of the main functions of the air-conditioning register is to adjust the direction of air-conditioning air sent from the air-conditioning apparatus and blown into the vehicle interior.

  As shown in FIG. 1A, the air-conditioning register includes a case 10 and fins as basic components, and also includes an operation knob, a transmission mechanism, and the like. Next, the basic configuration of each unit will be described.

<Case 10>
The case 10 is for connecting a ventilation duct (not shown) of an air conditioner and an opening (not shown) provided in an instrument panel (not shown), and both ends thereof are opened by a plurality of members. It is formed in a cylindrical shape. Most of the case 10 is formed of a hard resin material. The internal space of the case 10 is a flow path (hereinafter referred to as “ventilation path 11”) of air-conditioning air A sent from the left side in FIG. The case 10 has an air outlet 12 for air-conditioning air A at its downstream end (the right end in FIG. 1A).

  The ventilation path 11 is surrounded by two sets of opposing wall portions of the case 10. One set of opposing wall portions is constituted by a pair of lateral wall portions 13 and 14 that face each other in the vertical direction. The other set of opposing wall portions is constituted by a pair of vertical wall portions 15 facing each other in the vehicle width direction.

In each of the lateral wall portions 13 and 14, cylindrical shaft holes 16 and 17 are respectively provided in a plurality of locations spaced apart from each other in the vehicle width direction.
The shaft hole 16 in the upper lateral wall portion 13 and the shaft hole 17 in the lower lateral wall portion 14 extend along a straight line L1 that is inclined so as to be positioned on the downstream side toward the lower side. It is suitable. These shaft holes 16 and 17 are for supporting an upstream fin 20 to be described later in a tiltable manner.

  Here, in the present embodiment, the term “vertical direction” for the air conditioning register and its constituent members is based on the straight line L1. Since the straight line L1 is inclined as described above, the “vertical direction” does not exactly match the vertical direction of the vehicle (not the vertical direction) and is slightly inclined.

  In the upper side wall 13, at least the peripheral part of the shaft hole 16 (the whole side wall 13 in this embodiment) is formed of a hard resin material. On the other hand, at least the peripheral portion of the lower side wall portion 14 and the shaft hole 17 is constituted by a bearing member 18 formed of a softer resin material than the normal shaft portion 22 described later.

  In both the vertical wall portions 15, shaft holes for supporting a later-described downstream fin 30 to be tiltable are also provided between the air outlet 12 and the shaft holes 16, 17. I'll omit the explanation.

<Fin>
The fin includes a plurality of upstream fins 20 and a plurality of downstream fins 30. Each upstream fin 20 corresponds to a fin in the claims and has the same configuration. Further, the downstream fins 30 have the same configuration. These upstream fins 20 and downstream fins 30 are both formed of a hard resin material having the same or similar hardness as that of the case 10 except for the bearing member 18.

  Each upstream fin 20 includes a fin portion 21 and a pair of shaft portions extending from the fin portion 21 in directions opposite to each other. The plurality of upstream fins 20 are disposed in a state of being spaced apart from each other in the vehicle width direction. The fin portion 21 for each upstream fin 20 is composed of a plate-like body extending in the vertical direction of the air-conditioning register along the straight line L1.

  One (lower) shaft portion is configured by a normal shaft portion 22 that extends downward from the air conditioning register along the straight line L <b> 1 from the lower end surface of the fin portion 21. The normal shaft portion 22 is formed in a cylindrical shape having a slightly smaller diameter than the shaft hole 17, and is inserted into the coaxial hole 17 so as to be slidable and rotatable. Unlike the specific shaft portion 23 described later, the normal shaft portion 22 does not have the annular protrusion 25.

  As shown in FIG. 1B, the other (upper) shaft portion is configured by a specific shaft portion 23 extending from the upper end surface of the fin portion 21 along the straight line L1 to the upper side of the air conditioning register. The specific shaft portion 23 includes a shaft body 24 and an annular protrusion 25 as a bulging portion. The shaft body 24 is formed in a columnar shape that is thinner than the shaft hole 16. In the present embodiment, the radius R1 of the shaft body 24 is set to be about 0.1 mm smaller than the radius R2 of the shaft hole 16.

  The annular protrusion 25 bulges radially outward from a part of the outer peripheral surface 24A located in the shaft hole 16 in the shaft body 24. The annular protrusion 25 is provided in an annular shape over the entire circumference of the outer peripheral surface 24 </ b> A of the shaft body 24. The outer peripheral surface 25A of the annular protrusion 25 is constituted by a part of a spherical surface centered on the axis L2 (matching the straight line L1) of the specific shaft portion 23.

  The specific shaft portion 23 is slidably inserted into the upper shaft hole 16. Thus, in the state where the specific shaft portion 23 is inserted into the shaft hole 16, the gap between the annular protrusion 25 and the inner wall surface 16 </ b> A of the shaft hole 16 is the largest from the outer peripheral surface 24 </ b> A of the shaft body 24. It is the minimum (about 0.05 mm) at the bulged portion.

Each upstream fin 20 can tilt in the vehicle width direction with the normal shaft portion 22 inserted through the shaft hole 17 and the specific shaft portion 23 inserted through the shaft hole 16 as fulcrums as described above.
Between the specific shaft portions 23 and the inner wall surface 16 </ b> A of the shaft hole 16 and adjacent to the annular protrusion 25, passage of resin shavings generated by the tilting of the upstream fin 20 is allowed. A shaving residue processing unit 26 is provided. In the present embodiment in which the specific shaft portion 23 extends from the fin portion 21 to the upper side of the air conditioning register, the shaving residue processing portion 26 is configured by an annular space below the annular protrusion 25.

  As shown in FIG. 1A, in the fin portion 21 for each upstream fin 20, a connecting shaft 27 is provided at a location biased upstream from the specific shaft portion 23 and the normal shaft portion 22. . The connecting shaft 27 for each fin portion 21 is connected to a long connecting rod 28 extending in the vehicle width direction. These fin portion 21, shaft portion (normal shaft portion 22, specific shaft portion 23), connecting shaft 27, connecting rod 28 and the like constitute a parallel link mechanism 29 that tilts all the upstream fins 20 in a synchronized state. ing.

  Each downstream fin 30 includes a fin portion 31 and a pair of shaft portions (not shown) extending from the fin portion 31 in opposite directions. The plurality of downstream fins 30 are arranged in a state of being spaced apart from each other in the vertical direction of the air conditioning register. The fin portion 31 for each downstream fin 30 is a plate-like body extending in the vehicle width direction. Both shaft portions extend outward in the same direction from the both end surfaces of the fin portion 31 in the vehicle width direction (direction away from the fin portion 31). Each shaft portion is inserted into the shaft hole of the vertical wall portion 15 so as to be slidable and rotatable. Therefore, each downstream fin 30 can tilt in the vertical direction of the air-conditioning register with the shaft portion as a fulcrum. Although not particularly illustrated, each downstream fin 30 is also provided with a parallel link mechanism for tilting in a synchronized state, similar to the upstream fin 20 described above.

<Operation knob>
The operation knob is a member that is operated by a vehicle occupant when changing the blowing direction of the air-conditioning air A. Although not shown, one of the plurality of downstream fins 30, for example, the center in the vertical direction is used. The downstream fin 30 is slidable in the vehicle width direction.

<Transmission mechanism>
The transmission mechanism transmits the movement of the operation knob in the vehicle width direction to the upstream fin 20 and tilts the upstream fin 20 in the same direction, but the vertical movement of the operation knob is transferred to the upstream fin 20. This is a mechanism for preventing transmission. The transmission mechanism is, for example, the drive gear (rack gear) provided on the operation knob and one of the plurality of upstream fins 20, for example, the central upstream fin 20 in the vehicle width direction, with respect to the drive gear. And a driven gear (pinion gear) meshed with each other.

Next, the operation of the air conditioning register of the present embodiment configured as described above will be described focusing on the operation when the upstream fin 20 is tilted.
In the air conditioning register, the gap between the inner wall surface 16A of each shaft hole 16 in the lateral wall portion 13 of the case 10 and the annular protrusion 25 of each specific shaft portion 23 in each upstream fin 20 is slightly (about 0.05 mm). It has become. Therefore, the movement of the specific shaft portion 23 in each shaft hole 16 is restricted by the inner wall surface 16A. By this restriction, rattling of the specific shaft portion 23 in each shaft hole 16 is suppressed.

  In the air conditioning register, the air conditioning air A flows along the fins (the upstream fins 20 and the downstream fins 30) when passing through the ventilation path 11 in the case 10, and then from the air outlet 12 to the case 10. To the outside (downstream side). On the other hand, when the upstream fin 20 is tilted in the vehicle width direction with the specific shaft portion 23 and the normal shaft portion 22 as fulcrums by the slide operation of the operation knob on the downstream fin 30, the inclination in the same direction is changed. . When the downstream fin 30 is tilted in the vertical direction with the shaft portion as a fulcrum by the operation of the operation knob in the vertical direction, the tilt in the same direction is changed.

  When the upstream fin 20 tilts in the vehicle width direction, the annular protrusion 25 slides on the inner wall surface 16 </ b> A of the shaft hole 16 in the specific shaft portion 23. The annular protrusion 25 bulges radially outward from a part of the outer peripheral surface 24A located in the shaft hole 16 in the shaft body 24. Therefore, the annular protrusion 25 (the bulging portion) is not provided, and the contact area is small as compared with the case where the entire outer peripheral surface located in the shaft hole 16 in the shaft portion contacts the inner wall surface 16A of the shaft hole 16. .

  In particular, in the present embodiment in which the annular protrusion 25 is constituted by a part of a spherical surface centered on the axis L2 of the specific shaft portion 23, the annular protrusion 25 is the outer peripheral surface of the shaft body 24 in the outer peripheral surface 25A. Line contact is made over the entire circumference of the inner wall surface 16 </ b> A of the shaft hole 16 at a location where the largest bulge from 24 </ b> A occurs. Therefore, the contact area of the specific shaft portion 23 with respect to the inner wall surface 16A of the shaft hole 16 is very small.

  And if each fin (upstream fin 20, downstream fin 30) is tilted and the inclination is changed, the air-conditioning air A corresponds to the inclination of each fin (upstream fin 20, downstream fin 30). It flows in the direction and is blown out from the air outlet 12 of the case 10.

  Here, at least the peripheral portion of each shaft hole 16 and the specific shaft portion 23 in the upper lateral wall portion 13 are formed of a hard resin material. Therefore, when the specific shaft portion 23 slides in the shaft hole 16, the hard members are rubbed with each other and an abnormal noise is easily generated.

  However, in this embodiment, as described above, the contact area of the specific shaft portion 23 with the inner wall surface 16A of the shaft hole 16 is small. Therefore, when the tilt of the upstream fin 20 is in the initial stage of use of the air-conditioning register, the hard members are rubbed with each other when the specific shaft portion 23 slides in the shaft hole 16. It is hard to generate abnormal noise.

  In addition, when a scrap is generated due to repeated tilting of each upstream fin 20, the scrap is between the specific shaft portion 23 and the inner wall surface 16 </ b> A of the shaft hole 16 due to its own weight. A portion adjacent to the portion 25, in this case, passes through the shaving residue processing portion 26 below the annular protrusion 25 (drops), and is discharged to the outside of the shaft hole 16. Therefore, it is difficult for the scrap to be caught between the annular protrusion 25 and the inner wall surface 16 </ b> A of the shaft hole 16 as the upstream fin 20 tilts.

  When the upstream fin 20 is tilted, in the normal shaft portion 22, the entire outer peripheral surface located in the shaft hole 17 slides on the inner wall surface of the coaxial hole 17. At this time, the contact area of the normal shaft portion 22 with respect to the inner wall surface of the shaft hole 17 is larger than the contact area of the specific shaft portion 23 with respect to the inner wall surface 16 </ b> A of the shaft hole 16. However, the bearing member 18 constituting at least the peripheral portion of the shaft hole 17 is usually made of a softer resin material than the shaft portion 22. Therefore, when the normal shaft portion 22 slides in the shaft hole 17, the normal shaft portion 22 and the inner wall surface of the shaft hole 17 that is softer than the normal shaft portion 22 rub against each other. At this time, a sliding resistance is generated between the normal shaft portion 22 and the inner wall surface of the shaft hole 17. This sliding resistance becomes an operation load when performing a slide operation for tilting the upstream fin 20 through the operation knob.

According to the embodiment described in detail above, the following effects can be obtained.
(1) The upper shaft portion of each upstream fin 20 is formed from a columnar shaft body 24 formed narrower than the shaft hole 16 and a part of the outer peripheral surface 24A located in the shaft hole 16 of the shaft body 24. The specific shaft portion 23 includes a bulging portion (annular protrusion 25) that bulges radially outward and contacts the inner wall surface 16A of the shaft hole 16. In the horizontal wall portion 13, at least the peripheral portion of the shaft hole 16 through which the specific shaft portion 23 is inserted and the specific shaft portion 23 are formed of a hard resin material.

  Therefore, the contact area of the specific shaft portion 23 with respect to the inner wall surface 16A of the shaft hole 16 is reduced, and in the initial stage of use of the air conditioning register, although the hard members rub against each other when the upstream fin 20 is tilted, the difference is different. Generation of sound can be suppressed.

  (2) Here, even in a method in which grease is interposed between the upper shaft portion and the inner wall surface 16A of the shaft hole 16, at least the peripheral portion of the shaft hole 16 in the upper side wall portion 13 is less than the upper shaft portion. Even in the case of using a soft resin material, it is possible to suppress the generation of abnormal noise between the upper shaft portion and the shaft hole 16. However, in the former method, it is necessary to apply grease to each upstream fin 20 (upper shaft portion), resulting in an increase in cost. In the latter method, a separate member (similar to the bearing member 18) is formed of a soft resin material, and an assembling work is required, resulting in an increase in cost.

  On the other hand, in this embodiment, the specific shaft portion 23 is formed together with the fin portion 21 when the upstream fin 20 is resin-molded. For this reason, the cost increase associated with the formation of the specific shaft portion 23 can be reduced as compared with the above-described method of applying the grease and the method of using another soft member.

(3) A shaving residue processing portion 26 is provided between the specific shaft portion 23 and the inner wall surface 16 </ b> A of the shaft hole 16 and adjacent to the annular protrusion 25.
Therefore, the shavings generated by repeated tilting of the upstream fin 20 are wound between the annular protrusion 25 (the bulging portion) and the inner wall surface 16A of the shaft hole 16 as the upstream fin 20 tilts. It is possible to suppress the occurrence of abnormal noise caused by the entrainment.

  (4) The lower shaft portion of the upstream fin 20 is configured by the normal shaft portion 22 having no annular protrusion. Further, in the lower lateral wall portion 14, at least the peripheral portion of the shaft hole 17 is constituted by a bearing member 18 formed of a resin material that is softer than the normal shaft portion 22.

  For this reason, when the normal shaft portion 22 slides in the shaft hole 17, the hard normal shaft portion 22 and the inner wall surface of the shaft hole 17 softer than the normal shaft portion 22 are rubbed together. Can be suppressed. In addition, since the above configuration is applied only to the lower shaft portion of the pair of upper and lower shaft portions, an increase in cost due to the adoption of this configuration can be minimized.

  Further, when the operation for tilting the upstream fin 20 is performed, an operation load can be created by the sliding resistance generated between the normal shaft portion 22 and the inner wall surface of the shaft hole 17. Improvements can be made.

  (5) The bulging portion is configured by an annular protrusion 25 provided in an annular shape over the entire circumference of the outer peripheral surface 24A of the shaft body 24. The annular protrusion 25 is in line contact over the entire circumference of the inner wall surface 16 </ b> A of the shaft hole 16 at a location where the annular protrusion 25 bulges most from the outer peripheral surface 24 </ b> A of the shaft body 24.

  Therefore, the contact area of the specific shaft part 23 (annular protrusion 25) with respect to the inner wall surface 16A of the shaft hole 16 can be made very small. Therefore, at the initial use of the air conditioning register, it is possible to effectively suppress the generation of abnormal noise when the specific shaft portion 23 slides in the shaft hole 16.

(6) The outer peripheral surface 25 </ b> A of the annular protrusion 25 is configured by a part of a spherical surface centering on the axis L <b> 2 of the specific shaft portion 23.
Therefore, the annular protrusion 25 can be brought into line contact with the inner wall surface 16A of the shaft hole 16 at the portion of the outer peripheral surface 25A that bulges most from the outer peripheral surface 24A of the shaft main body 24, and the effect of the above (5) Can be obtained.

  (7) Shaft holes 16 and 17 extending in the vertical direction of the air-conditioning register are provided in each of the pair of lateral wall portions 13 and 14 facing in the vertical direction of the vehicle. The specific shaft portion 23 extending upward from the air conditioning register from the fin portion 21 of the upstream fin 20 is inserted into the shaft hole 16. The shaving residue processing part 26 is configured by a space between the specific shaft part 23 and the inner wall surface 16A of the shaft hole 16 and below the annular protrusion 25 (bulging part).

  Therefore, in the case where scraps are generated due to repeated tilting of the upstream fins 20, the scraps are discharged to the outside of the shaft hole 16 from the scrap residue processing unit 26 below the annular protrusion 25 by its own weight. Can be made. It is possible to prevent the scrap from being caught between the annular protrusion 25 (the bulging portion) and the inner wall surface 16A of the shaft hole 16 as the upstream fin 20 tilts, and to obtain the effect (3). it can.

Note that the present invention can be embodied in another embodiment described below.
<Regarding the specific shaft portion 23 and the shaving residue processing portion 26>
-On condition that the following items (i) to (iii) are satisfied, the specific shaft portion 23 and the shaving residue processing portion 26 may be changed as follows.

(I) The shaft body 24 in the specific shaft portion 23 has a cylindrical shape.
(Ii) The bulging part is formed on the outer peripheral surface 24A of the shaft main body 24, and is formed by ridges provided at a plurality of locations separated from each other in the circumferential direction.

(Iii) The shaving residue processing portion 26 is formed by a space between the specific shaft portion 23 and the inner wall surface 16 </ b> A of the shaft hole 16 and between the protrusions adjacent in the circumferential direction of the shaft body 24.
2 (A) and 2 (B) show a plurality of (four) protrusions 41 extending along the axis L2 of the specific shaft portion 23 in the circumferential direction on the outer peripheral surface 24A of the cylindrical shaft body 24. The example of a change provided for every equal angle (90 degree | times) is shown. The outer peripheral surface 41A of each protrusion 41 is constituted by a part of a cylindrical surface centering on the axis L2. A plurality of (four) shavings processing portions 26 are configured by a space between the specific shaft portion 23 and the inner wall surface 16A of the shaft hole 16 and between the protrusions 41 adjacent in the circumferential direction of the shaft body 24. Yes.

  According to such a configuration, the specific shaft portion 23 inserted into the shaft hole 16 is in surface contact with the inner wall surface 16 </ b> A of the shaft hole 16 at the outer peripheral surface 41 </ b> A of the plurality (four) of the protrusions 41. By these surface contacts, the contact area of the specific shaft portion 23 with respect to the inner wall surface 16A of the shaft hole 16 can be reduced, and the effect (1) described above that suppresses the generation of abnormal noise can be obtained.

  Further, the contact between the plurality of protrusions 41 around the shaft body 24 and the inner wall surface 16 </ b> A of the shaft hole 16 makes it easy to position the specific shaft portion 23 at the center of the shaft hole 16. A slight gap between the hole 16 and the inner wall surface 16A can be managed with high accuracy.

  In particular, since the plural (four) protrusions 41 are provided at equal angles (90 degrees), the specific shaft portion 23 is formed at the center portion of the shaft hole 16 as compared with the case where they are not provided at equal angles. Easy to position. Therefore, a slight gap between the specific shaft portion 23 and the inner wall surface 16A of the shaft hole 16 can be managed with higher accuracy.

  Further, in the case where scraps are generated due to repeated tilting of the upstream fins 20, the scraps are accommodated in one of the scrap residue processing units 26. Therefore, it is possible to prevent the scrap from being caught between the protrusion 41 (the bulging portion) and the inner wall surface 16A of the shaft hole 16, and the effect (3) can be obtained.

  2A and 2B, the number of protrusions 41 may be changed to a number different from “4” on the condition that there are a plurality of protrusions 41. The minimum of this number is two. When the number is changed in this way, the plurality of protrusions 41 are preferably provided at equal angles in the circumferential direction, but are not necessarily provided at equal angles.

  3A and 3B show a modified example in which the pair of protrusions 42 are formed in a spiral shape on the outer peripheral surface 24A of the shaft main body 24 so as to face each other across the axis L2 of the specific shaft portion 23. Is shown. The outer peripheral surface 42A of each protrusion 42 is constituted by a part of a cylindrical surface centered on the axis L2. A plurality (a pair) of shavings processing portions 26 are configured by a space between the specific shaft portion 23 and the inner wall surface 16A of the shaft hole 16 and between the protrusions 42 adjacent to each other in the circumferential direction of the shaft body 24. .

According to such a configuration, the same effect as the above-described modified example described in FIGS. 2A and 2B can be obtained, and the following effect can be obtained.
The bulging portion is configured by a pair of few protrusions 42 that face each other across the axis L2 of the specific shaft portion 23 on the outer peripheral surface 24A of the shaft body 24. However, the pair of spirally formed protrusions 42 are in surface contact with the inner wall surface 16 </ b> A of the shaft hole 16 at many places in the circumferential direction as compared with the case where the pair of protrusions 42 are parallel to the axis L <b> 2 of the specific shaft portion 23. Therefore, although it is the minimum number of protrusions 42, it becomes easier to position the specific shaft portion 23 at the center portion of the shaft hole 16, and a slight gap between the specific shaft portion 23 and the inner wall surface 16A of the shaft hole 16 is formed. It is possible to manage with high accuracy.

  4A and 4B show that on the outer peripheral surface 24A of the cylindrical shaft body 24, a plurality of protrusions 43 are arranged in the circumferential direction on the same circle centered on the axis L2 of the specific shaft portion 23. The example of a change provided for every equal angle in the state spaced apart from each other is shown. An outer peripheral surface 43A of each protrusion 43 is constituted by a part of a cylindrical surface centering on the axis L2. As shown in FIG. 4 (A), the bulging portions including the plurality of protrusions 43 are provided at a plurality of locations in the direction along the axis L2 (two locations in FIG. 4 (A)). Good.

A plurality of shaving residue processing portions 26 are configured by spaces between the protrusions 43 adjacent to each other in the circumferential direction of the shaft body 24 between the specific shaft portion 23 and the inner wall surface 16 </ b> A of the shaft hole 16.
Therefore, in this case, although the shape of the protrusion 43 is different from the protrusions 41 and 42 described above, the same effect can be obtained.

  In FIG. 5, a plurality of protrusions 44 and 45 provided on the outer peripheral surface 24A of the columnar shaft body 24 are provided so as to obliquely intersect at two different angles with respect to the generatrix of the outer peripheral surface 24A. Examples of changes are shown. The outer peripheral surfaces 44A and 45A of the protrusions 44 and 45 are constituted by a part of a cylindrical surface centering on the axis L2. Although illustration of the shaft hole 16 and its peripheral portion is omitted, a plurality of shavings are made by a space between the specific shaft portion 23 and the inner wall surface 16A of the shaft hole 16 and surrounded by the adjacent protrusions 44 and 45. A residue processing unit 26 is configured.

Therefore, in this case, the same effect can be obtained although the shapes of the protrusions 44 and 45 are different from the protrusions 41 to 43 described above.
<About the shaft portion that is the target of the specific shaft portion 23>
In the upstream fin 20, contrary to the above embodiment, the upper shaft portion may be configured by a normal shaft portion, and the lower shaft portion may be configured by a specific shaft portion.

In the upstream fin 20, both the upper shaft portion and the lower shaft portion may be configured by the specific shaft portion.
As for the downstream fin 30 in addition to the upstream fin 20, as with the upstream fin 20, at least one of the pair of shaft portions may be configured by a specific shaft portion.

-It replaces with the upstream fin 20, and about only the downstream fin 30, at least one of a pair of axial part may be comprised by the specific axial part.
<About shaft holes 16 and 17>
The shaft holes 16 and 17 may extend in the vertical direction (vertical direction) of the vehicle.

The inner diameters of the shaft holes 16 and 17 may be the same or different.
<About materials>
-The horizontal wall part 13 should just be formed with the hard resin material at least the peripheral part of the axial hole in which the specific axial part 23 was penetrated, and the whole horizontal wall part 13 is not necessarily formed with the hard resin material. Also good.

  When one of the pair of shaft portions is constituted by the normal shaft portion 22, the case 10 only needs to have at least the peripheral portion of the shaft hole 17 formed of a resin material softer than the normal shaft portion 22. A portion wider than the embodiment may be formed of a soft resin.

  In order to suppress the occurrence of abnormal noise between the normal shaft portion 22 and the shaft hole 17, at least the peripheral portion of the shaft hole 17 is formed by a soft resin material instead of or in addition to the normal shaft portion 22 and the shaft. Grease may be interposed between the inner wall surfaces of the holes 17.

<Fin arrangement mode>
The present invention can also be applied to an air-conditioning register in which each upstream fin is arranged so as to extend in the vehicle width direction and each downstream fin is arranged so as to extend in the vertical direction.

<Applicable parts for air conditioning registers>
-This invention is applicable also to the register | resistor for an air conditioning arrange | positioned in the location different from an instrument panel in a vehicle interior.

  The air-conditioning register of the present invention is not limited to vehicles and can be widely applied as long as it can adjust the direction of air-conditioning air that is sent from the air-conditioning apparatus and blows out into the room.

  DESCRIPTION OF SYMBOLS 10 ... Case, 11 ... Ventilation path, 13, 14 ... Side wall part (opposing wall part), 16, 17 ... Shaft hole, 16A ... Inner wall surface, 20 ... Upstream fin (fin), 21 ... Fin part, 22 ... Normal Shaft portion (shaft portion), 23 ... specific shaft portion (shaft portion), 24 ... shaft body, 24A, 25A ... outer peripheral surface, 25 ... annular protrusion (bulging portion), 26 ... shaving residue processing portion, 30 ... downstream Side fins, 41, 42, 43, 44, 45 ... ridges (bulges), A ... air for air conditioning, L2 ... axis.

Claims (5)

The internal space is an air-conditioning air ventilation path, a part of the wall surrounding the ventilation path is constituted by a pair of opposed wall parts facing each other, and a cylinder is formed at a location where the opposed wall parts are opposed to each other. A cylindrical case provided with a shaft hole;
A plate-like fin portion disposed in the case, and a pair of shaft portions that extend in opposite directions from the fin portion and are inserted into the shaft holes for the opposing wall portions, are provided in the shaft portion. An air-conditioning register in which the direction of blowing the air-conditioning air from the case is changed by changing the inclination of the fin by the tilting, and the fin is supported on the opposing wall so as to be tiltable.
At least one of the pair of shaft portions is a columnar shaft main body formed narrower than the shaft hole, and a part of an outer peripheral surface located in the shaft hole of the shaft main body swells radially outward. It is composed of a specific shaft portion provided with a bulging portion that comes into contact with the inner wall surface of the shaft hole,
At least the peripheral portion of the shaft hole through which the specific shaft portion is inserted in the facing wall portion, and the specific shaft portion are formed of a hard resin material,
Allow the passage of the shavings generated by the tilting of the fin or accommodate the shavings between the specific shaft portion and the inner wall surface of the shaft hole and adjacent to the bulging portion. A shaving residue processing unit is provided ,
The bulging portion is configured by an annular protrusion provided in an annular shape over the entire outer peripheral surface of the shaft main body, and the bulging portion of the shaft hole is located at the most bulged portion from the outer peripheral surface of the shaft main body. An air-conditioning register characterized by being in line contact over the entire circumference of the inner wall surface . One of the pair of shaft portions is constituted by the specific shaft portion, and the other is constituted by a normal shaft portion not having the bulging portion,
2. The air-conditioning register according to claim 1, wherein at least a peripheral portion of the shaft hole through which the normal shaft portion is inserted is formed of a resin material that is softer than the normal shaft portion. The air-conditioning register according to claim 1 or 2 , wherein an outer peripheral surface of the annular protrusion is configured by a part of a spherical surface centering on an axis of the specific shaft portion. The pair of opposing wall portions are arranged in a state of being opposed in the vertical direction,
The shaft hole extends in the up-down direction at each of the opposing wall portions,
The specific shaft portion extends in the vertical direction and is inserted through the shaft hole,
The said shaving residue processing part is comprised between the said specific shaft part and the said inner wall surface of the said shaft hole, Comprising: The space below the said cyclic | annular protrusion is comprised , The any one of Claims 1-3. The air-conditioning register described in the section . The internal space is an air-conditioning air ventilation path, a part of the wall surrounding the ventilation path is constituted by a pair of opposed wall parts facing each other, and a cylinder is formed at a location where the opposed wall parts are opposed to each other. A cylindrical case provided with a shaft hole;
A plate-like fin portion disposed in the case, and a pair of shaft portions that extend in opposite directions from the fin portion and are inserted into the shaft holes for the opposing wall portions, are provided in the shaft portion. A fin supported in a tiltable manner on the opposing wall;
An air-conditioning register in which the direction of blowing the air-conditioning air from the case is changed by changing the inclination of the fin by the tilting,
At least one of the pair of shaft portions is a columnar shaft main body formed narrower than the shaft hole, and a part of an outer peripheral surface located in the shaft hole of the shaft main body swells radially outward. It is composed of a specific shaft portion provided with a bulging portion that comes into contact with the inner wall surface of the shaft hole,
At least the peripheral portion of the shaft hole through which the specific shaft portion is inserted in the facing wall portion, and the specific shaft portion are formed of a hard resin material,
Allow the passage of the shavings generated by the tilting of the fin or accommodate the shavings between the specific shaft portion and the inner wall surface of the shaft hole and adjacent to the bulging portion. A shaving residue processing unit is provided,
The shaft body has a cylindrical shape,
The bulging part is formed on a peripheral surface of the shaft main body, and is constituted by a pair of protrusions provided at locations separated from each other in the circumferential direction,
The shaving residue processing part is configured by a space between the specific shaft part and the inner wall surface of the shaft hole and between adjacent ridges adjacent in the circumferential direction of the shaft main body ,
The two protrusions are provided on the outer peripheral surface of the shaft main body at equal angles in the circumferential direction, and are formed in a spiral shape in a state of being opposed to each other with the axis of the specific shaft portion interposed therebetween. Air conditioning register characterized by that .