JP6324664B2 - Damper structure of vehicle air conditioner - Google Patents

Description

  The present invention relates to a damper structure of a vehicle air conditioner mounted on, for example, a passenger car.

  The casing of the vehicle air conditioner contains a heat exchanger for cooling and a heat exchanger for heating, and a damper for adjusting the amount of air passing through these heat exchangers. The air flow is controlled by a damper to generate conditioned air at a desired temperature. The vehicle air conditioner is an independent temperature control type that is configured to supply conditioned air of different temperatures to the left and right areas in the passenger compartment, and to the left and right areas in the passenger compartment. There is an interlocking temperature control type that is configured to supply conditioned air at a single temperature (see, for example, Patent Document 1).

  In Patent Document 1, one of a set of a first air mix damper and a second air mix damper for an independent temperature control type and a set of a first air mix damper and a second air mix damper for an interlocking temperature control type. Is selected and assembled to the casing. The first air mix damper and the second air mix damper for the independent temperature control type each have a cylindrical portion and a shaft portion inserted into the cylindrical portion, and the shaft portion is inserted into the cylindrical portion. In the state, the first air mix damper and the second air mix damper are individually operated by the actuator. Further, the first air mix damper and the second air mix damper for the interlocking temperature control type also have a cylindrical portion and a shaft portion. With the shaft portion inserted into the cylindrical portion, the first air mix damper and The second air mix damper is integrated so as not to rotate relatively, and is operated by one actuator.

  In Patent Document 1, the shape of the cylindrical portion and the shaft portion is set so that the second air mix damper for the interlocking temperature control type cannot be assembled to the first air mix damper for the independent temperature control type. ing.

Japanese Patent No. 4770615

  In patent document 1, it becomes possible to prevent erroneous assembly of the air mix damper between the independent temperature control type and the interlocking temperature control type by setting the shapes of the cylindrical portion and the shaft portion as described above. Yes.

  However, in this case, the parts to be prepared are the first air mix damper and the second air mix damper for the independent temperature control type, and the first air mix damper and the second air for the interlocking temperature control type. There are 4 types in total with the mix damper. The main difference between these independent temperature control type and interlocking temperature control type parts is the shape of the cylindrical part and the shaft part. Most of the parts are the same, but four types must be prepared. As the number increases, the mold cost rises, and as a result, the cost of the vehicle air conditioner increases.

  The present invention has been made in view of the above points, and an object of the present invention is to reduce the types of damper forming dies assembled to the casing of the vehicle air conditioner having the independent temperature control type and the interlocking temperature control type. This is to reduce the mold cost.

  In order to achieve the above object, in the present invention, a protruding shaft portion is provided on the rotating shaft of the first damper, a cylindrical portion is provided on the rotating shaft of the second damper, and the protruding shaft portion and the cylindrical portion are provided with A shaft-side locking portion and a cylinder-side locking portion that are locked to each other are provided, and the shaft-side locking portion can be removed from the protruding shaft portion.

1st invention is the damper structure of the vehicle air conditioner by which the 1st damper and 2nd damper which change the flow volume of the air which flows through the inside of the casing which produces | generates conditioned air are rotatably assembled | attached to this casing,
The first damper is provided with a projecting shaft portion projecting in the axial direction on the rotation center line,
The second damper is provided with a cylindrical portion on the rotation center line into which the protruding shaft portion is inserted,
The protruding shaft portion and the cylindrical portion are provided with a shaft side locking portion and a cylinder side locking portion, which are locked to each other and prevent relative rotation, respectively.
The proximal end side of the protruding shaft portion is a cylindrical body portion and is inserted into the cylindrical portion, and the distal end side of the protruding shaft portion is an insertion portion that is inserted into the cylindrical portion. Removable from the body part,
The shaft side locking portion is provided in the insertion portion,
The cylinder side locking portion is provided on the inner surface of the cylindrical portion ,
The length of the main body portion of the projecting shaft portion in the direction of the rotation center line is set so that the front end surface of the main body portion does not contact the inner surface of the cylindrical portion .

  According to this configuration, when the protruding shaft portion of the first damper is inserted into the cylindrical portion of the second damper without removing the shaft-side locking portion of the first damper, the shaft-side locking portion and the cylinder side The locking portion is locked to prevent relative rotation between the first damper and the second damper. Accordingly, for example, by driving only the first damper with the actuator, the second damper can be operated in the same manner as the first damper, so that the vehicle air conditioner of the interlocking temperature control type is obtained.

  On the other hand, if the protruding shaft portion of the first damper is inserted into the cylindrical portion of the second damper with the shaft side locking portion of the first damper removed, the first damper and the second damper are not locked together. Relative rotation with respect to is allowed. Thus, by driving the first damper and the second damper with the actuators, the first damper and the second damper can be operated independently, so that an independent temperature control type vehicle air conditioner is obtained.

  Further, the shaft side locking portion and the cylinder side locking portion can be locked only by inserting the protruding shaft portion of the first damper into the cylindrical portion of the second damper.

Moreover, when the main body portion of the protruding shaft portion from which the shaft side locking portion is removed is inserted into the cylindrical portion, the distal end surface of the main body portion of the protruding shaft portion is in a state of being separated from the inner surface of the cylindrical portion. As a result, even when a burr or the like is generated on the front end surface of the main body portion of the protruding shaft portion when the shaft side locking portion is removed, it is possible to prevent the burr or the like from interfering with the cylindrical portion. . Therefore, the damper can be smoothly rotated.

According to a second invention, in the first invention,
The shaft side locking portion is provided to protrude from the main body portion of the protruding shaft portion,
A step portion is provided at a base end portion of the shaft side locking portion.

According to this configuration, when the independent temperature control type vehicle air conditioner is manufactured, the shaft side locking portion can be easily removed from the main body portion of the protruding shaft portion .

  According to the first invention, the same first damper and the second damper are prepared for the independent temperature control type and the interlocking temperature control type, and the vehicle depends on whether the shaft side locking portion of the first damper is removed or not. Air conditioning equipment can be divided into independent temperature control type and linked temperature control type. Therefore, it is possible to reduce the mold cost by reducing the types of damper molds assembled to the vehicle air conditioner.

  Further, by inserting the protruding shaft portion of the first damper into the cylindrical portion of the second damper, an interlocking temperature control type vehicle air conditioner can be obtained, so that assembly workability can be improved.

In addition, since the front end surface of the main body portion of the projecting shaft portion is prevented from contacting the inner surface of the cylindrical portion, burrs or the like are generated on the front end surface of the main body portion of the projecting shaft portion when the shaft side locking portion is removed. Even so, the damper can be smoothly rotated.

According to the second invention, since the step portion is provided at the base end portion of the shaft side locking portion of the first damper, the shaft side locking portion can be easily removed from the main body portion of the protruding shaft portion .

1 is a left side view of a vehicle air conditioner according to an embodiment of the present invention. It is a figure which shows the internal structure of a vehicle air conditioner. It is a disassembled perspective view of a vehicle air conditioner. It is a cross-sectional view of the casing in which the interlocking temperature control type air mix damper unit is assembled. It is a fragmentary sectional view of the interlocking temperature control type air mix damper unit in the state assembled to the casing. It is the end view which looked at the driver's seat side air mix damper of the interlocking temperature control type from the insertion part side. It is the end view which looked at the passenger-side air mix damper of the interlocking temperature control type from the cylindrical part side. It is an exploded view of an interlocking temperature control type air mix damper unit. It is a top view of a driver's seat side air mix damper in the state where an insertion part was removed. It is the end elevation which looked at the driver's seat side air mix damper of the state where the insertion part was removed from the spindle side. It is a fragmentary sectional view of the independent temperature control type air mix damper unit in the state assembled to the casing.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 is a left side view of a vehicle air conditioner 1 according to an embodiment of the present invention.

  In the description of this embodiment, the front side of the vehicle is simply referred to as “front”, the rear side of the vehicle is simply referred to as “rear”, the left side of the vehicle is simply referred to as “left”, and the right side of the vehicle is simply referred to as “right”.

  The vehicle air conditioner 1 is mounted, for example, in a passenger compartment of an automobile, and includes a blower unit 2 (indicated by a virtual line) in addition to the air conditioning unit 3. The blower unit 2 is for blowing air for air conditioning to the air conditioning unit 3. This vehicle is a so-called left-hand drive vehicle in which a driver's seat is disposed on the left side.

  The blower unit 2 is disposed on the passenger seat side (right side) in the instrument panel of the vehicle. Moreover, the air conditioning unit 3 is arrange | positioned in the left-right direction approximate center part in the said instrument panel.

  As shown in FIGS. 2 and 3, the air conditioning unit 3 includes a casing 40, a cooling heat exchanger 30, a heating heat exchanger 31, an air mix damper unit 32, a defroster damper 33, and a vent damper unit. 34 and a heat damper unit 35.

  The casing 40 is divided into a front casing 43 and a rear casing 44. Further, as shown in FIG. 3, the rear casing 44 is divided into left and right parts, which are fastened by fastening members such as screws.

  The cooling heat exchanger 30 constitutes an evaporator that is an element of the refrigeration cycle apparatus, and cools the air-conditioning air introduced into the casing 40. The cooling heat exchanger 30 is disposed in the most upstream portion in the air flow direction in the casing 40 (near the front end in the casing 40). Almost all of the air-conditioning air introduced into the casing 40 passes through the cooling heat exchanger 30.

  The air that has passed through the cooling heat exchanger 30 is divided into a flow toward the lower side of the casing 40 and a flow toward the upper side. A heating passage R <b> 1 is formed on the downstream side of the cooling heat exchanger 30 in the casing 40. A heat exchanger 31 for heating is disposed in the heating passage R1. The heating heat exchanger 31 is a heater core through which engine cooling water circulates, and heats the air that has passed through the cooling heat exchanger 30 and has flowed into the heating passage R1.

  The air that has flowed upward through the cooling heat exchanger 30 flows into the air mix space AM. Further, the air that has passed through the heat exchanger 31 for heating also flows into the air mix space AM. In the air mix space AM, the air that has passed through the cooling heat exchanger 30 and the air that has passed through the heating heat exchanger 31 are mixed to generate conditioned air having a desired temperature.

  The downstream side of the air mix space AM is branched into a defroster passage D, a vent passage B, and a heat passage H.

  As shown in FIG. 3, a partition member P for partitioning the internal space of the casing 40 in the left-right direction is provided inside the casing 40. The partition member P is formed in a plate shape extending from the downstream side of the cooling heat exchanger 30 to the air mix space AM, the defroster passage D, the vent passage B, and the heat passage H shown in FIG. Therefore, the air passage in the casing 40 is divided into the left and right by the partition member P on the downstream side of the cooling heat exchanger 30.

  The downstream end of the defroster passage D opens to the front side of the upper wall portion of the casing 40. The defroster passage D is connected to a defroster nozzle of the instrument panel through a duct (not shown).

  The downstream end of the vent passage B opens to the upper side of the rear wall portion of the casing 40. The left side of the vent passage B with respect to the partition member P is connected to a driver seat side vent nozzle disposed on the left side of the instrument panel. Thereby, the air flowing through the air passage (driver's seat side air passage) Dr (shown in FIG. 4) on the left side of the partition member P in the casing 40 is supplied to the driver's seat side area (left area) of the passenger compartment. become. The driver seat side air passage Dr becomes the first air passage.

  The right side of the vent passage B with respect to the partition member P is connected to a passenger seat side vent nozzle disposed on the right side of the instrument panel. Thereby, the air flowing through the air passage (passenger seat side air passage) Ps on the right side of the partition member P in the casing 40 is supplied to the passenger seat side area (right area) of the passenger compartment. The passenger seat side air passage Ps becomes the second air passage. That is, the air conditioner 1 has a first air passage and a second air passage.

  The downstream end of the heat passage H is open to the lower part of the casing 40. A heat duct (not shown) is connected to the heat passage H.

  As shown in FIGS. 2 and 3, the defroster damper 33 includes a rotation shaft 33a extending in the left-right direction and a closing plate portion 33b extending in the radial direction of the rotation shaft 33a. Both end portions of the rotation shaft 33a are rotatably supported while being inserted into bearing holes 40c (shown in FIG. 1) formed in the casing 40. The closing plate portion 33 b is for opening and closing the defroster passage D.

  As shown in FIG. 3, the vent damper unit 34 includes a driver seat side vent damper 34Dr disposed on the left side of the partition member P and a passenger seat side vent damper 34Ps disposed on the right side of the partition member P. ing. The driver seat side vent damper 34Dr and the passenger seat side vent damper 34Ps are coupled so as to rotate integrally.

  The driver seat side vent damper 34Dr and the passenger seat side vent damper 34Ps each include a rotation shaft 34a and a closing plate portion 34b for opening and closing the vent passage B. The rotating shaft 34a is inserted into a bearing hole 40d (shown in FIG. 1) formed in the casing 40 and is rotatably supported.

  As shown in FIG. 3, the heat damper unit 35 also includes a left driver's seat side heat damper 35Dr and a right passenger's seat side heat damper 35Ps, and the driver's seat side heat damper 35Dr and the passenger's seat side heat damper 35Ps are integrated with each other. Coupled to rotate.

  Each of the driver's seat side heat damper 35Dr and the passenger's seat side heat damper 35Ps includes a rotation shaft 35a and a closing plate portion 35b that opens and closes the heat passage H. The rotation shaft 35a is inserted into a bearing hole 40e (shown in FIG. 1) formed in the casing 40 and is rotatably supported.

  The vehicle air conditioner 1 of the present embodiment includes an independent temperature control type that supplies conditioned air of different temperatures to the driver seat side area and the passenger seat side area of the passenger compartment, There is an interlocking temperature control type that supplies conditioned air of the same temperature to the passenger side area. These independent temperature control type and interlocking temperature control type use air mix damper unit 32 molded with the same mold, and whether or not part is removed according to production instructions before assembly after molding Therefore, it is possible to make an independent temperature control type and a linked temperature control type separately.

  That is, as shown in FIGS. 4 and 5, the air mix damper unit 32 includes a driver seat side air mix damper (first damper) 321 and a passenger seat side air mix damper (second damper) 322. . The driver-seat-side air mix damper 321 includes a rotation shaft 321a that protrudes to the left, a support shaft (protrusion shaft portion) 321b that protrudes toward the passenger-seat-side air mix damper 322 (right side), and the rotation shaft 321a. And a closing plate portion 321c extending in the radial direction.

  The rotation shaft 321a of the driver seat side air mix damper 321 is inserted into a bearing hole 40b (shown in FIG. 1) formed in the left side wall portion of the casing 40 and is rotatably supported. It is located on the rotation center line of the side air mix damper 321. The support shaft 321b of the driver's seat side air mix damper 321 is positioned concentrically (on the rotation center line) with the rotation shaft 321a, and is inserted into the insertion hole P1 formed in the partition member P as shown in FIG. And is rotatably supported.

  The closing plate portion 321c of the driver seat side air mix damper 321 can simultaneously open and close the upstream end opening 62 and the downstream end opening 63, which are part of the heating passage R1 shown in FIG. The closing plate portion 321c rotates around the rotation shaft 321a, thereby closing the upstream end opening 62 and the downstream end opening 63 of the heating passage R1 as shown in FIG. While opening 61, although not shown, the cold air inlet 61 of the air mix space AM is closed with the upstream end opening 62 and the downstream end opening 63 of the heating passage R1 being opened. By adjusting the opening degree of the upstream end opening 62 and the downstream end opening 63 of the heating passage R1 and the opening degree of the cold air inlet 61, the amount of hot air flowing into the air mix space AM and the amount of cold air are changed to change the air. The temperature of the conditioned air generated on the driver seat side of the mix space AM can be changed.

  As shown also in FIG. 5, the support shaft 321b of the driver seat side air mix damper 321 is formed in a cylindrical shape. The base end side of the support shaft 321b is a main body portion 321f of the support shaft 321b, and has a cylindrical shape. The main body portion 321f has a larger diameter than the distal end side of the support shaft 321b and passes through the insertion hole P1 of the partition member P. The outer surface of the main body portion 321f is in sliding contact with the inner surface of the insertion hole P1 of the partition member P. The distal end side of the support shaft 321b is an insertion portion (shaft side locking portion) 321g that is inserted into a cylindrical portion 322b of a passenger seat side air mix damper 322, which will be described later. As shown in FIG. 6, two concave portions 321h and 321h are formed on the outer peripheral surface of the insertion portion 321g at intervals in the circumferential direction. The concave portions 321h and 321h extend in the direction of the rotation center line of the insertion portion 321g. The insertion portion 321g has a smaller diameter than the main body portion 321f, and a step portion 321k is formed between the insertion portion 321g and the main body portion 321f. Thereby, the insertion part 321g can be easily removed from the main body part 321f.

  As shown in FIG. 4, the passenger-side air mix damper 322 includes a rotating shaft 322 a that protrudes toward the right side, a cylindrical portion 322 b that opens on the left side, and a blocking plate portion that extends in the radial direction of the rotating shaft 322 a. 322c. The rotation shaft 322 a is inserted into a bearing hole 40 a formed in the right side wall portion of the casing 40 and is rotatably supported, and is positioned on the rotation center line of the passenger seat side air mix damper 322. Yes. The center line of the cylindrical portion 322b extends in the left-right direction similarly to the rotation shaft 322a, and is positioned concentrically (on the rotation center line) with the center line of the rotation shaft 322a. The cylindrical portion 322b has a large diameter portion 322f having a circular cross section similar to the cross section of the main body portion 321f of the support shaft 321b of the driver seat side air mix damper 321 and a small diameter portion 322g smaller in diameter than the large diameter portion 322f. doing. With the main body portion 321f of the support shaft 321b of the driver side air mix damper 321 being inserted into the cylindrical portion 322b, the outer surface of the main body portion 321f comes into sliding contact with the inner surface of the large diameter portion 322f of the cylindrical portion 322b. Yes.

  The diameter of the small diameter portion 322g of the cylindrical portion 322b is set to be smaller than the main body portion 321f of the support shaft 321b of the driver seat side air mix damper 321 and the insertion portion 321g can be inserted. As shown also in FIG. 7, convex portions (cylinder side locking portions) 322h and 322h are formed on the inner surface of the small diameter portion 322g. The convex portions 322h and 322h of the small diameter portion 322g are engaged with the concave portions 321h and 321h of the insertion portion 321g in a state where the insertion portion 321g is inserted into the small diameter portion 322g, so that the driver side air mix damper 321 and the passenger side air This is to prevent relative rotation with the mix damper 322. In this state, the driver-seat-side air mix damper 321 and the passenger-seat-side air mix damper 322 are integrated so that relative rotation is impossible, and the air-mix damper unit 32 for the interlocking temperature control type is obtained.

  In the interlocking temperature control type, only the left air mix actuator 53 is assembled to the casing 40. When the left air mix actuator 53 is operated to rotate the driver seat side air mix damper 321, the passenger seat side air mix damper 322 is interlocked. Thereby, the temperature of the conditioned air generated in the driver seat side air passage Dr and the temperature of the conditioned air generated in the passenger seat side air passage Ps become the same temperature. Even if only the right air mix actuator 54 is assembled to the casing 40, the driver seat side air mix damper 321 and the passenger seat side air mix damper 322 can be linked in the same manner.

  As shown in FIGS. 9 to 11, when the insertion portion 321g of the passenger seat side air mix damper 322 is removed from the main body portion 321f, the relative rotation between the driver seat side air mix damper 321 and the passenger seat side air mix damper 322 is relatively reduced. Since there is no obstacle to the movement, the driver-side air mix damper 321 and the passenger-side air mix damper 322 can be rotated relative to each other, and the air-mix damper unit 32 for the independent temperature control type is obtained.

  In the independent temperature control type, as shown in FIG. 4, the left air mix actuator 53 and the right air mix actuator 54 are assembled to the casing 40. The left air mix actuator 53 is fixed to the left wall portion of the casing 40 and is connected to the rotation shaft 321a of the driver seat side air mix damper 321.

  On the other hand, the right air mix actuator 54 is fixed to the right side wall portion of the casing 40, and is connected to the rotation shaft 322 a of the passenger seat side air mix damper 322.

  When only the left air mix actuator 53 is operated, only the driver's seat side air mix damper 321 is rotated, and when only the right air mix actuator 54 is operated, only the passenger's seat side air mix damper 322 is rotated. Thereby, the temperature of the conditioned air generated in the driver seat side air passage Dr and the temperature of the conditioned air generated in the passenger seat side air passage Ps can be set to different temperatures.

  The left air mix actuator 53 and the right air mix actuator 54 are controlled by a control device (not shown) based on, for example, the set temperature of the driver's seat occupant and the set temperature of the passenger's seat occupant.

  Next, the manufacturing point of the vehicle air conditioner 1 configured as described above will be described.

  On the production site line, an independent temperature control type vehicle air conditioner 1 and an interlocking temperature control type vehicle air conditioner 1 are manufactured. The assembling worker receives the instruction whether it is an independent temperature control type or an interlocking temperature control type, and manufactures it. An air mix damper unit 32 formed of the same mold is used for the independent temperature control type and the interlocking temperature control type.

  For example, when manufacturing an independent temperature control type, as shown in FIG. 9, the insertion part 321g of the driver's seat side air mix damper 321 is removed from the main body part 321f. Then, the driver seat side air mix damper 321 and the passenger seat side air mix damper 322 are assembled to the casing 40. The rotating shaft 321 a of the driver side air mix damper 321 is inserted into the bearing hole 40 b of the casing 40 and assembled to the casing 40. Thereafter, the partition member P is assembled to the casing 40. At this time, the support shaft 321b of the driver seat side air mix damper 321 is inserted into the insertion hole P1 of the partition member P, and the main body portion 321f is inserted into the insertion hole P1.

  Next, the passenger seat side air mix damper 322 is assembled. At this time, the main body portion 321f of the support shaft 321b of the driver seat side air mix damper 321 is inserted into the large-diameter portion 322f of the cylindrical portion 322b of the passenger seat side air mix damper 322. Since the insertion portion 321g is removed, the driver seat side air mix damper 321 and the passenger seat side air mix damper 322 can be relatively rotated.

  The independent temperature control type air mix damper unit 32 is assembled in the casing 40 as described above.

  By removing the insertion portion 321g, it is considered that the front end surface of the main body portion 321f of the support shaft 321b of the driver side air mix damper 321 can be uneven, but in this embodiment, the rotation direction of the main body portion 321f Is set so that the distal end surface of the main body portion 321f does not reach the small diameter portion 322g. Therefore, the unevenness of the front end surface of the main body portion 321f does not contact the inner surface of the small diameter portion 322g, and smooth rotation is achieved. Is possible.

  On the other hand, in the case of the interlocking temperature control type, the insertion portion 321g of the driver seat side air mix damper 321 is used without being removed from the main body portion 321f. Then, the driver seat side air mix damper 321, the partition member P, and the passenger seat side air mix damper 322 are assembled to the casing 40. At this time, the main body portion 321f of the support shaft 321b of the driver seat side air mix damper 321 is inserted into the large-diameter portion 322f of the cylindrical portion 322b of the passenger seat side air mix damper 322 and the driver seat side air mix damper 321 is inserted. The part 321g is inserted into the small diameter part 322g of the passenger seat side air mix damper 322. In this state, the convex portions 322h and 322h of the small diameter portion 322g and the concave portions 321h and 321h of the insertion portion 321g are locked, so that the relative rotation between the driver seat side air mix damper 321 and the passenger seat side air mix damper 322 occurs. Since the movement is blocked, the driver seat side air mix damper 321 and the passenger seat side air mix damper 322 cannot be rotated relative to each other.

  The interlocked temperature control type air mix damper unit 32 is assembled in the casing 40 as described above.

  As described above, in the vehicle air conditioner 1 according to this embodiment, the independent temperature control type and the interlocking temperature control type include the casing 40, the cooling heat exchanger 30, the heating heat exchanger 31, and the partition. The member P can be shared.

  Then, the same driver seat side air mix damper 321 and passenger seat side air mix damper 322 are prepared for the independent temperature control type and the interlocking temperature control type, and the insertion portion 321g of the driver seat side air mix damper 321 is removed. Depending on whether or not, the vehicle air conditioner 1 can be made separately into an independent temperature control type and a linked temperature control type. Accordingly, only two types of dampers are installed in the vehicle air conditioner 1; the driver seat side air mix damper 321 and the passenger seat side air mix damper 322, and the type of damper can be reduced to reduce the mold cost.

  Further, since the air mix damper unit 32 can be obtained by inserting the support shaft 321b of the driver seat side air mix damper 321 into the tubular portion 322b of the passenger seat side air mix damper 322, the assembly workability can be improved. .

  In addition, since the step portion 321k is provided at the base end portion of the insertion portion 321g of the driver seat side air mix damper 321, the insertion portion 321g can be easily removed from the main body portion 321f of the support shaft 321b.

  In the present embodiment, the case where the present invention is applied to the air mix damper has been described. However, the present invention is not limited to this. For example, the present invention is also applicable to a case where a vent damper or a heat damper moves differently on the driver seat side and the passenger seat side. can do.

  Moreover, although the said embodiment demonstrated the case where this invention was applied to the vehicle air conditioner 1 provided with the butterfly type damper, it is not restricted to this, For example, although not shown, the vehicle air conditioner provided with the rotary damper etc. It can also be applied to a device.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the damper structure of the vehicle air conditioner according to the present invention can be applied, for example, when supplying conditioned air of different temperatures to the driver side area and the passenger side area of the passenger compartment. .

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 32 Air mix damper unit 321 Driver's seat side air mix damper (1st damper)
321b Support shaft (protruding shaft)
321g Insertion part 321h Concave part (shaft side locking part)
322 Passenger side air mix damper (second damper)
322b Tubular portion 322h Convex portion (cylinder side locking portion)
40 casing

Claims (2)

In the damper structure of the vehicle air conditioner in which the first damper and the second damper that change the flow rate of the air flowing in the casing that generates the conditioned air are rotatably assembled to the casing.
The first damper is provided with a projecting shaft portion projecting in the axial direction on the rotation center line,
The second damper is provided with a cylindrical portion on the rotation center line into which the protruding shaft portion is inserted,
The protruding shaft portion and the cylindrical portion are provided with a shaft side locking portion and a cylinder side locking portion, which are locked to each other and prevent relative rotation, respectively.
The proximal end side of the protruding shaft portion is a cylindrical body portion and is inserted into the cylindrical portion, and the distal end side of the protruding shaft portion is an insertion portion that is inserted into the cylindrical portion. Removable from the body part,
The shaft side locking portion is provided in the insertion portion,
The cylinder side locking portion is provided on the inner surface of the cylindrical portion ,
The length of the main body portion of the projecting shaft portion in the direction of the rotation center line is set so that the front end surface of the main body portion does not contact the inner surface of the cylindrical portion . Damper structure. In the damper structure of the vehicle air conditioner according to claim 1,
A damper structure for a vehicle air conditioner, wherein a stepped portion is provided at a base end portion of the shaft side locking portion.

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