JP4911999B2 - Actuator fixing structure for vehicle air conditioner - Google Patents

Description

  The present invention relates to a structure for fixing an actuator to a case of a vehicle air conditioner via a bracket.

  2. Description of the Related Art Conventionally, an actuator motor is disposed outside a case of a vehicle air conditioner to operate an air mix door, a wind direction switching door, and the like in the case via a link mechanism. For example, as disclosed in Patent Document 1, the operation of the air mix door for temperature control and the operation of the air direction switching door for switching the blowing mode are performed by one actuator motor. Are known.

  That is, in the conventional example, a distribution link made of a plate-like member is attached to the output shaft of the actuator motor, and one end of each link member is connected to a plurality of cam grooves provided on the distribution link by pins. The other end of each link member is connected to a drive lever such as an air mix door or a wind direction switching door.

  Then, by rotating the distribution link by the actuator motor, thereby moving each link member and operating the air mix door, the wind direction switching door, etc. in synchronism, temperature control in the air conditioner and switching of the blowing mode can be performed. Are performed with an appropriate correlation.

  By the way, the actuator motor that drives the link mechanism as described above is a standard product and is usually screwed (fastened) to the case of the air conditioner at least at three places by using mounting holes provided at a plurality of predetermined places. However, if it is intended to avoid interference with the link mechanism, the door drive lever, etc., it is extremely difficult to provide screw holes so as to match three of the mounting holes.

Therefore, normally, as shown in FIG. 13, for example, a metal plate bracket B is overlapped on the front side of the actuator motor M (side from which the output shaft protrudes) and screwed, and sub-assembled. To be screwed on. In this case, the bracket B is provided with screw holes g so as to match any three of the mounting holes of the actuator motor M, and three screw holes (not shown) provided on the outer surface of the case. The through hole h may be formed so as to match the above.
JP 2003-34125 A

  However, in the conventional actuator fixing structure, the actuator motor M is once screwed to the bracket B, and the bracket B is then screwed to the case, so that the actuator motor M is directly screwed. The number of screws required is approximately doubled compared to the above, and a screwing process is also required when sub-assembling, and the screw hole g must be processed when the bracket B is manufactured. It was easy to become.

  In view of this point, an object of the present invention is to devise a structure of a bracket for fixing an actuator to a case of an air conditioner, and to reduce costs by reducing man-hours.

  In order to achieve the above object, in the present invention, the actuator is clamped by a pair of clamping members, and a part of them is overlapped and screwed (fastened) to the case of the air conditioner.

Specifically, the invention of claim 1 is directed to a structure in which an actuator in which a mounting hole for inserting a screw to be screwed into a case of a vehicle air conditioner is fixed to the case via a bracket. The bracket comprises a pair of clamping members that cooperate to clamp the actuator, and each clamping member is provided with a fastened portion that is overlapped with each other and fastened to the case, and at least one of them This clamping member is provided with a fitting portion so as to be fitted into the mounting hole of the actuator.

  With the above configuration, when the actuator is attached to the outside of the case of the air conditioner, the actuator is sandwiched between a pair of sandwiching members that function as brackets and held in a predetermined position on the outside of the case, and the respective sandwiched parts What is necessary is just to screw (fasten) the to-be-fastened part of a member to the said case. That is, since it is not necessary to screw the actuator to the bracket as in the prior art, the number of assembling steps can be reduced, and screw preparation and screw hole processing for that purpose are not required, thereby reducing the cost.

  In addition, when the actuator is clamped by the pair of clamping members, the insertion portion provided in at least one of the clamping members is inserted into the mounting hole of the actuator, so that the clamping member can be used without screwing or the like. It becomes possible to clamp the actuator firmly, and it becomes easy to position and hold the actuator with respect to the case.

  Further, in the case where the actuator has flat portions on the front side where the output portion is provided and the rear side opposite to the output portion, it is preferable that the holding members are respectively connected to the flat portions before and after the actuator. A fitting surface portion is formed so as to protrude from the joining surface portion of at least one clamping member (invention of claim 2).

  If it carries out like this, while each plane part before and behind an actuator and the joint surface part of each clamping member will be stably joined by planes, the attachment hole which protrudes from at least one joint surface part will open to the other plane part By being fitted in, the relative sliding of both is prevented, and the clamping of the actuator by the clamping member becomes more reliable.

  More preferably, the at least one clamping member is provided with an extending wall portion extending in a protruding direction of the fitting portion continuously to the main body portion on which the joint surface portion with the actuator is formed. Is brought into contact with the side portion of the actuator (invention of claim 3). If it carries out like this, not only can an actuator be clamped from the front and back, but it can be held also by the extension wall part which contacts from the side.

  In that case, at least one of the clamping members has a U-shaped cross section with extending wall portions on both sides of the main body portion, and the fastened portion is connected to each of the extending wall portions. Preferably, it is formed (Invention of Claim 4). If it carries out like this, the whole actuator can also be hold | maintained from the side with a U-shaped clamping member, and can be screwed (fastened) to a case on the both sides.

  Alternatively, the at least one clamping member has an L-shaped cross section with an extending wall portion only on one side of the main body portion, and a fastened portion is formed so as to be continuous with the extending wall portion. (Invention of claim 5). In this case, one side of the actuator is screwed (fastened) to the case via a bracket (clamping member), while the other side is screwed to the case directly using the mounting holes of the actuator. Thus, for example, when the rigidity of the bracket itself is relatively low as in the case of being formed of a resin material, it is rather advantageous in securing the support rigidity of the actuator.

  It is particularly preferable that each holding member of the bracket is of the same shape having a fitting portion and an extending wall portion (invention of claim 6). If it carries out like this, an actuator will be clamped from the front and back by the same clamping member, and cost reduction will be attained further by sharing parts.

  Alternatively, one of the holding members is provided with an insertion shaft having a length penetrating the mounting hole of the actuator as an insertion portion, and the other holding member is a hole portion into which the tip of the insertion shaft passing through the mounting hole is inserted. May be provided (invention of claim 7). In this way, the holding shaft and the positioning accuracy are improved by the insertion shaft of one clamping member passing through the mounting hole of the actuator, and the tip of the insertion shaft is fitted into the hole of the other clamping member. Thus, the sandwiching members are connected to each other and are integrally combined with the actuator.

  Alternatively, a fitting portion can be formed on the fastened portion of each clamping member so as to be fitted with the other fastened portion that is superimposed on each other (invention of claim 8). Similarly to the seventh aspect of the invention, the actuator and the pair of clamping members are integrally combined.

  Of the pair of clamping members constituting the bracket as described above, at least one clamping member provided with a fitting portion or the like is preferably a resin molded product (invention of claim 9). This is because the resin molded product has a high degree of freedom in shape, and for example, a shaft portion that penetrates the mounting hole of the actuator can be easily formed as an insertion portion.

  As described above, according to the present invention, a bracket is constituted by a pair of clamping members, and the clamped portions of the clamping members are overlapped and screwed while holding the clamped actuator to the air conditioner case. As a result, it is not necessary to screw the actuator to the bracket, the number of assembling steps is reduced, and screw preparation and screw hole machining for that purpose are not required, thereby reducing costs.

  FIG.1 and FIG.2 is the perspective view which respectively looked at the vehicle air conditioner 1 which concerns on embodiment of this invention from the rear side and front side of the vehicle front-back direction. Unless otherwise specified in the following description, “front” and “rear” mean “front in the vehicle front-rear direction” and “rear in the vehicle front-rear direction”, respectively, and “left” and “right” Means “left in the vehicle width direction” (left in FIG. 1) and “right in the vehicle width direction” (right in the same figure).

(Configuration of air conditioner)
Although not shown, the air conditioner 1 of this embodiment is disposed between a dash panel that partitions an engine room and a passenger compartment in a left-hand drive vehicle and an instrument panel that faces the front of the occupant. Yes, it includes an air conditioning unit 2 disposed at a substantially central portion in the vehicle width direction, and a blower unit 6 disposed on the right side (passenger seat side).

-Air conditioning unit-
The air conditioning unit 2 cools or heats the air-conditioning air sent from the blower unit 6 and supplies it to the passenger compartment as conditioned air whose temperature or humidity is adjusted. As shown in FIG. A resin case 20 (hereinafter referred to as an air conditioning case) in which an intermediate duct 21 through which air from the blower unit 6 circulates is integrated. The air conditioning case 20 includes a lower case member 20a that forms a lower portion, a right case member 20b that forms a right half of the remaining upper portion, and a left case member 20c that forms a left half. Combined.

  As shown in FIG. 4, an intermediate duct 21 is formed at the front portion of the right side wall of the air conditioning case 20 so as to straddle the lower case member 20 a and the right case member 20 b. Further, as shown in FIG. 3, a defrost port 22 divided into a plurality of regions is opened across the left and right case members 20b and 20c on the front side of the upper surface portion of the air conditioning case 20, while Similarly, a vent port 23 is opened on the rear side.

  Further, a rear foot duct 24 is formed on the rear side of the air conditioning case 20 so as to open downward. Although not shown, a duct connected to the lower end of the duct 24 extends to the foot space of the rear seat. . Also, front foot ducts 25 (only the left side are shown) are disposed on the left and right side walls of the case 20 near the upper end of the rear foot duct 24 so as to extend downward.

  As shown in FIG. 5, the defrost port 22 and the vent port 23 are provided with a defrost damper 26 and a vent damper 27 for opening and closing the openings, respectively. The foot dampers 28 for opening and closing the communicating portions to the front and rear foot ducts 24 and 25 are arranged. Each of the dampers 26 to 28 has a support shaft extending in the vehicle width direction, and both ends of the support shaft are rotatably supported on the left and right side walls of the air conditioning case 20.

  Further, one end portion (in this example, the right end portion) of each of the support shafts of the dampers 26 to 28 protrudes outward through the right side wall of the air conditioning case 20, respectively. 4, the actuator motor 29 is attached to the outside of the right side wall of the case 20 via a link mechanism 30. As will be described in detail later, the actuator motor 29 is provided with screws 32, 31,... (See FIG. 6) for the three boss portions 31, 31,. 32,...

  As shown in FIG. 6 in an enlarged manner, the link mechanism 30 includes a drive side link member 33 that is rotationally driven by an output shaft 29a (output portion) of an actuator motor 29 (shown in phantom lines), and the drive side link member. Three driven side link members 34 to 36 respectively driven by the motor 33, and crank members 37 to 37 fixed to the support shafts of the dampers 26 to 28 and rotated by the driven side link members 34 to 36, respectively. 39.

  The drive side link member 33 is a substantially circular plate member formed by injection molding of a resin material as shown in FIG. 7 when viewed from the opposite side to FIG. A pin member or the like (not shown) is inserted from one side (the rear side in the figure, the front side in FIG. 6) into the round hole 33 a that penetrates the air hole 20 and is rotatably attached to the right side wall of the air conditioning case 20. In addition, a round hole 33b is formed in a penetrating manner so that a pin at the tip of a lever member attached to the motor output shaft 29a (shown by a virtual line in FIG. 6) is pivotally inserted at a predetermined distance from the center and radially outward. Has been.

  In addition, on the surface shown on the near side in FIG. 7, three cam grooves 33c and 33d having a predetermined shape that extend in the circumferential direction and bend in the radial direction at a portion closer to the outer periphery of the drive side link member 33. 33e, and the pins 34a to 36a of the driven side link members 34 to 36 are slidably fitted to each other as indicated by broken lines in FIG. In addition, the code | symbol 33f of illustration is a through-hole formed so that interference with the boss | hub part 31 by the side of the case 20 may be avoided.

  Each of the driven side link members 34 to 36 is a plate member that is long in one direction formed by injection molding a resin material, and one end portion in the longitudinal direction is formed larger than the other, and Pins 34 a to 36 a that protrude from the intermediate portion to one side in the thickness direction and engage with the cam grooves 33 c to 33 e of the drive side link member 33 are formed. The relatively large end portions (large end portions) of the driven side link members 34 to 36 are respectively formed with round holes 34b to 36b penetrating in the thickness direction, and are rotated on the right side wall of the air conditioning case 20 by a pin member or the like. While being movably attached, pins 34c to 36c project from the relatively small end portions (small end portions) on the side opposite to the pins 34a to 36a of the intermediate portion, respectively.

  And the small end part of each said driven side link member 34-36 can be rotated with respect to the crank members 37-39 of each damper 26-28 by the pins 34c-36c, respectively, and each of these crank members 37-39 is provided. It is slidably connected in the longitudinal direction. That is, each of the crank members 37 to 39 is a plate member that is long in one direction formed by injection molding of a resin material, and one end portion in the longitudinal direction thereof cannot be rotated on the support shafts of the dampers 26 to 28, respectively. In addition to being fixed, elongated holes 37a to 39a are formed over substantially the entire length in the longitudinal direction excluding the fixing portion, and pins 34c to 36c at the small ends of the driven side link members 34 to 36 are provided there. Each is fitted so as to be rotatable and slidable along the elongated holes 37a to 39a.

  With such a configuration, when the drive-side link member 33 is rotated by the actuator motor 29, the driven-side link members 34 to 36 correspond to the displacement of the pins 34a to 36a that engage with the cam grooves 33c to 33e. Swings around the large end, and crank members 37 to 39 connected to the small end by pins 34c to 36c respectively swing together with the respective support shafts of the dampers 26 to 28. As a result, the three dampers 26 to 28 swing in synchronization with each other.

  Further, inside the air conditioning case 20, as shown by the arrows in FIG. 5, air introduced from the intermediate duct 21 flows into the defrost port 22, vent port 23, and front and rear foot ducts 24 and 25. The temperature control damper 40 is arranged so that the route to reach is divided into a heating passage and a non-heating passage on the way. Although not shown, the temperature control damper 40 is arranged on each of the left and right sides of a partition wall that divides the interior of the air conditioning case 20 into left and right sides, and each is in the vehicle width direction, like the defrost damper 26 and the like. , One end of which protrudes out of the case, and is connected to the actuator motor 42 via a link member 41 and the like, as shown on the right side in FIGS.

  As shown in FIG. 5 again, an introduction space portion into which the air circulated in the intermediate duct 21 is first introduced is formed in the front portion of the air conditioning case 20, and this introduction space portion and the temperature control damper 40 are In between, the evaporator 44 is arrange | positioned as a heat exchanger for cooling air. Although not shown in detail, the evaporator 44 is of a so-called tube and fin type in which, for example, aluminum alloy tubes and heat transfer fins are alternately arranged and integrated. In this example, the evaporator 44 is arranged vertically. The front faces the introduction space.

  A refrigerant inflow tank and an outflow tank are provided on the right side of the evaporator 44, and a refrigerant inlet side pipe 45 and an outlet side pipe 46 are connected to each of them. As shown in FIGS. 1, 3, and 4, the pipes 45 and 46 penetrate the right side wall of the air conditioning case 20, are routed forward from above the intermediate duct 21, and then from the front end of the air conditioning case 20. It extends through the seal block 47 extending to the right side and extends to the engine room side. A low-temperature and low-pressure liquid refrigerant flows from a refrigerant circuit in an engine room (not shown) through the pipes 45 and 46, and the liquid refrigerant evaporates while circulating in the tube, thereby taking away ambient heat. Thus, the air passing between the heat transfer fins is cooled.

  Thus, the air flow that has passed through the evaporator 44 is distributed by the temperature control damper 40 to either the lower heating passage or the upper non-heating passage. In other words, a heater core 48 that is a heat exchanger for heating air is disposed vertically and obliquely downward and rearwardly of the temperature control damper 40, and is distributed downward by the temperature control damper 40. During the passage of the air flow between the heat transfer fins, the air is heated by exchanging heat with the high-temperature engine cooling water flowing through the tubes.

  The heater core 48 is of the tube-and-fin type, like the evaporator 44, and includes an introduction pipe 49 for introducing a high-temperature coolant from the engine side, and a lead-out pipe 50 for returning the coolant in the heater core 48 to the engine side. Are connected (see FIG. 2). These inlet pipe 49 and outlet pipe 50 penetrate the left side wall of the air conditioning case 20 and the front surface thereof is routed to the front of the intermediate duct 21, and then penetrate the seal block 47 in the same manner as the pipes 45 and 46 of the evaporator 44. And it extends to the engine room side.

  When the temperature control damper 40 is at the maximum heating position indicated by the solid line in FIG. 5, all the air that has passed through the evaporator 44 is directed to the heating passage, while at the maximum cold air position indicated by the phantom line in the figure. Sometimes all the air goes to the unheated passage. The temperature control damper 40 is driven by an actuator motor 42 so as to be positioned at a plurality of opening positions between the maximum cold air position and the maximum heating position. The distribution of the air flowing through the non-heating passage will change.

  Thus, the air flow once distributed to the heating passage and the non-heating passage by the temperature adjustment damper 40 merges above the temperature adjustment damper 40 to become conditioned air whose temperature or humidity is adjusted. That is, the space above the temperature control damper 40 and below the defrost damper 26 and the vent damper 27 is an air mix space portion in which cold air and heated air are mixed, and the conditioned air generated here is the defrost port 22, vent. It is sent out to the mouth 23 and the front and rear foot ducts 24 and 25 and is supplied from a predetermined place into the vehicle interior.

  In this embodiment, as shown in FIGS. 1 to 4, the drainage duct 51 for discharging the condensed water generated in the evaporator 44 of the air conditioning unit 2 to the outside is provided from the case 20 of the air conditioning unit 2 to the intermediate duct. 21 is provided so as to extend toward the blower unit 6 along the lower edge. The drainage duct 51 is integrally formed with a plate-like mounting plate 52 for fixing the air conditioning unit 2 to the dash panel, and a stud provided in the dash panel (not shown) is provided in a through hole 52a provided in the drainage duct 51. Bolts are inserted and fastened by nuts.

  As shown in FIGS. 1 to 4, plate-like mounting plates 53 and 54 that extend outward in the left and right directions near the respective upper ends are integrally formed on the left and right side walls of the air conditioning case 20. Each of the mounting plates 53 and 54 is superposed on a frame member (hereinafter referred to as an instrument panel member) of an instrument panel (not shown) from above and below and fastened. Through holes 53a and 54a through which stud bolts (not shown) provided in the instrument panel member are inserted are opened.

-Blower unit-
Next, the air blowing unit 6 that supplies air for air conditioning to the air conditioning unit 2 will be described. The blower unit 6 of this embodiment includes a resin case 60 (hereinafter referred to as a blower case) integrally formed with a connection frame portion 61 (see FIG. 8) connected to the intermediate duct 21 on the air conditioning case 20 side. The blower case 60 is formed by combining two divided bodies of a right case member 60a and a left case member 60b that are divided in the vehicle width direction.

  As shown in FIGS. 8 and 9, the upper portion of the blower case 60 basically has a bowl shape extending in the vehicle width direction, and its rear half portion is an arc surface inclined downward toward the rear side. A lattice-shaped inside air inlet 62 for taking in air is formed. On the other hand, an outer air intake duct 63 having a substantially rectangular cross section extending obliquely upward and forward is formed in the front half of the upper part of the case, and an upper space in the air blowing case 60 communicating with a passage in the duct 63 is formed. It is an air intake space portion for taking in air from either the vehicle interior or the vehicle exterior.

  Further, the lower part of the blower case 60 is formed in a spiral shape with its outer peripheral side centered around the vertical axis, and the air intake space is not shown on the inner peripheral side of the inner spiral path. A centrifugal multiblade fan that sucks in air taken into the section and sends it to the outer peripheral side is housed. On the other hand, the end of the spiral passage opens to the lower front side of the left side wall of the blower case 60, and extends outward (left side) from the periphery of the opening and is connected to the intermediate duct 21 of the air conditioning case 20. A frame portion 61 is formed.

  In addition, the intermediate part between the upper part of the case formed in a bowl shape and the lower part of the case formed in a spiral shape as described above is formed in a rectangular shape surrounding the front, rear, left and right, and is taken into the air intake space portion there. An air filter for filtering the air is arranged. Although not shown, a rectangular opening for exchanging the air filter is formed at the rear of the case intermediate portion, and a lid member 64 for opening and closing the opening is provided.

  Further, as shown in FIGS. 1 and 2 in addition to FIGS. 8 and 9, the blower case 60 is integrally formed with mounting plates 65, 66 and 67 for fixing the blower unit 6 to the dash panel. Yes. That is, the mounting plate 65 is provided so as to extend outward from the upper left side wall of the blower case 60, and has a horizontal plate portion in which a vertical through hole 65a is opened on a substantially horizontal mounting surface, and a vertical plate hanging from the rear end. As shown in FIG. 1, it is overlapped with a mounting plate 54 formed on the right side wall of the air conditioning case 20 and is fastened together with an instrument panel member outside the figure. It has become.

  The mounting plates 66 and 67 extend from the vicinity of the rear end of the upper and lower right side walls of the blower case 60 to the rear oblique right side, and then bend and extend further to the right side. , 67a are formed of plate members. The upper and lower mounting plates 66 and 67 are superimposed on an instrument panel member (not shown) in the front-rear direction, and stud bolts provided on the upper and lower mounting plates 66 and 67 are inserted through the through holes 66a and 67a. To the instrument panel member.

  In the air intake space formed in the upper part of the air blowing case 60 as described above, an inside / outside air switching damper 70 is provided so as to alternatively close the inside air inlet 62 and the passage in the outside air intake duct 63. Has been placed. The inside / outside air switching damper 70 is a rotary damper that swings about an axis in the vehicle width direction, and as shown in FIG. A pair of substantially wedge-shaped side wall portions 71, 71 that extend, an outer peripheral wall portion 72 that is integrally formed so as to connect the outer peripheral edges thereof, and pivot axes from the inner peripheral ends of the side wall portions 71, 71, respectively. Support shaft portions 73 and 73 projecting outward along Y.

  In addition, flanges 74a and 74a are formed on both side edges in the swing direction of the side walls 71 and 71 so as to protrude outward in the swing axis Y direction, respectively, Flange 74b, 74b is formed so as to protrude radially outward at both side edges in the swinging direction, and these flanges 74a, 74b wrap around the corners where each side wall 71 and outer peripheral wall 72 are connected to each other. The flange 74 is configured to be connected and to circulate the entire inside / outside air switching damper 70. A sealing member 75 made of foamed resin is attached to the flange 74 so as to sandwich it.

  Both the support shaft portions 73, 73 of the inside / outside air switching damper 70 are rotatably supported on the left and right side walls of the blower case 60, respectively, and one of the support shaft portions 73 (in this example, the left support shaft 73). The tip of the shaft portion penetrates the left side wall of the blower case 60 and protrudes outward, and is connected to the actuator motor 77 via the link member 76 as shown in FIG.

  When the inside / outside air switching damper 70 is driven by the actuator motor 77 and the outside air intake state in which the passage in the outside air intake duct 63 is fully opened, the inside air inlet 62 is fully closed, and the outside air intake duct 63 is opened. Only the air outside the passenger compartment is taken in through. On the other hand, if the passage in the outside air intake duct 63 is fully closed, the inside air inlet 62 is fully opened, and the inside air intake state in which only the air in the vehicle compartment is taken from here is entered.

  Then, the air taken into the air intake space portion in the blower case 60 from either the inside or outside of the vehicle interior is filtered through the air filter below and then sucked into the centrifugal multiblade fan. It is discharged into a spiral passage at the bottom of the case surrounding the outer periphery. The air flow whose direction is changed in the spiral path is sent out to the air conditioning unit 2 from the end of the spiral path that opens in the left side wall of the blower case 60 through the intermediate duct 21.

(Actuator motor fixing structure)
Next, in the air conditioning unit 2 described above, the actuator motor 29 that drives the defrost damper 26, the vent damper 27, and the foot damper 28 is fixed to the right side wall of the air conditioning case 20 while avoiding interference with the link mechanism 30 in detail. explain. In the description of the fixing structure, for convenience, the actuator motor 29 and the bracket portion are referred to as front and rear, left and right, etc. with reference to the front and rear direction of the motor in which the output shaft 29a of the actuator motor 29 extends.

  As described above, in this embodiment, the driving side link member 33 is driven by the actuator motor 29, and thereby the three driven side link members 34 to 36 are moved to operate the three dampers 26 to 28 in synchronization with each other. I try to let them. For this reason, the link mechanism 30 becomes complicated, and in particular, the drive side link member 33 becomes large. Therefore, the layout of the boss portion 31 provided on the right side wall of the air conditioning case 20 is strongly restricted while avoiding interference with them.

  On the other hand, the actuator motor 29 attached to the boss portion 31 is a standard product and has a substantially rectangular box shape as shown in FIGS. 3 and 4 and the like, and its lateral direction (the horizontal direction in FIG. A total of six fixed feet are provided on each side of each side of the vehicle (in the example, the vehicle longitudinal direction in the example), and the thickness direction of the actuator motor 29 (motor longitudinal direction in which the output shaft extends) is provided on each of the fixed feet. .. (See FIG. 11) are provided.

  The actuator motor 29 is usually fixed by screwing it to the air conditioning case 20 using three or more mounting holes 29b, 29b,... As described above. In a situation where the layout of 31 is strongly restricted, it is extremely difficult to provide the boss portions 31, 31,... So as to match three of the six attachment holes 29b, 29b,.

  On the other hand, the actuator motor is generally fixed to the case through a sheet metal bracket (see FIG. 13). For this purpose, the actuator motor is once screwed to the bracket. Since the bracket is screwed to the case after subassembly, the required number of screws is increased, and a screwing process is also required for subassembly, and the bracket is manufactured. There is a problem that the cost tends to be high, for example, it is sometimes necessary to process a screw hole.

  Therefore, in this embodiment, as shown in an enlarged view in FIG. 11, two bracket members 80 (clamping members), which are molded products of resin, are used as brackets for fixing the actuator motor 29, and the clamping portion 81 thereof. , 81 (main body part), the actuator motor 29 is sandwiched from the front and back, and the flange parts 84, 84 of the bracket members 80, 80 are overlapped with each other and screwed to the boss part 31 of the air conditioning case 20 (fastened together) )

  That is, as shown in the drawing, the actuator motor 29 has a predetermined range including three left and right fixed legs on the front side and the rear side (the range on the right side of the figure is an E-shaped range, and the range on the left side is the same). The flat portions 29c and 29c are formed in a range extending from the E-shaped range to substantially the entire rear surface of the motor. On the other hand, the bracket member 80 has a vertically long holding portion 81 that covers all three fixing feet on either side (right side in the figure) and holds a portion closer to the side of the actuator motor 29 from the front and rear. The clamping portion 81 is formed with planar joining surface portions 81a, 81a,... That are joined to the planar portion 29c of the actuator motor 29.

  Further, the bracket member 80 is provided with a shaft portion 82 (hereinafter referred to as a fitting shaft) that protrudes from the joint surface portions 81a, 81a,... And is fitted into the mounting hole 29b of the actuator motor 29. The insertion shaft 82 is formed in a slightly tapered shape, and the outer diameter on the base end side is substantially the same as the inner diameter of the mounting hole 29b, and is inserted into the mounting hole 29b up to the base end. It is designed to fit firmly.

  Further, the bracket member 80 has a vertically long extending wall portion 83 that is bent from one end (right end in the drawing) of the holding portion 81 and extends in the same direction as the fitting shaft 82. The wall portion 83 and the sandwiching portion 81 are L-shaped in cross section. The extension wall portion 83 abuts on the three fixed legs and holds the actuator motor 29 from the side, and is a vertically long flange so as to bend and extend from the extension end to the side opposite to the insertion shaft 82. A portion 84 (fastened portion) is provided.

  The flange portion 84 is overlapped with the flange portion 84 of the opposite bracket member 80 facing in the front-rear direction of the actuator motor 29, and the screws 32 are respectively fed to both ends in the longitudinal direction, which is the longitudinal direction. Through holes 84a, 84a,... Are formed, and bosses 84b, 84b,... Projecting from the periphery of each through hole 84a are also formed. Note that triangular reinforcing wall portions 84c are formed at both ends in the longitudinal direction so as to straddle the flange portion 84 and the extending wall portion 83, and similarly, extend from the sandwiching portion 81 to the intermediate portion in the longitudinal direction. Reinforcing ribs (not denoted by reference numerals) are formed so as to straddle the exit wall portion 83.

  When the actuator motor 29 is attached to the right side wall of the air conditioning case 20 using the pair of bracket members 80, 80 configured as described above, first, the two bracket members 80, 80 are respectively attached to the actuator motor 29 as shown in the figure. Positioned in the front-rear direction, the insertion shafts 82, 82 of the front bracket member 80 are inserted from the front into the corresponding mounting holes 29b, 29b of the actuator motor 29 from the front side. Similarly, the insertion shafts 82, 82 of the rear bracket member 80 are inserted. Are inserted into the corresponding mounting holes 29b, 29b from the rear side.

  When the insertion shafts 82 and 82 of the front and rear bracket members 80 are respectively inserted into the corresponding mounting holes 29b and 29b of the actuator motor 29 from the front and rear sides to the base end, the base end sides of the insertion shafts 82 and The mounting hole 29b is firmly fitted, and the joint surface portion 81a of the bracket member 80 surrounding the root of the insertion shaft 82 is stably joined to the front and rear flat portions 29c of the actuator motor 29. At this time, since the fitting shaft 82 is fitted into the mounting hole 29b as described above, no slip occurs between the flat surface portion 29c and the joint surface portion 81a that are joined to each other.

  At that time, the flange portions 84, 84 of the front and rear bracket members 80, 80 are also overlapped and stably joined, and the extension wall portions 83, 83 of the bracket members 80, 80 respectively connect the actuator motor 29. It also holds from one side (from the right side of the figure).

  In this way, the pair of bracket members 80, 80 can hold the actuator motor 29 firmly without screwing or the like, so the actuator motor 29 is positioned at a predetermined position on the right side wall of the air conditioning case 20, The flange portions 84 and 84 of the bracket members 80 and 80 overlapped with each other can be easily screwed to the boss portions 31 and 31 of the air conditioning case 20 at the boss portions 84a and 84a.

  On the other side (left side in this example) of the actuator motor 29, the mounting hole 29b of the center of the three fixed feet is aligned with the screw hole of the boss portion 31 of the air conditioning case 20, and the screw 32 is screwed into this. By joining, the center fixed leg is directly fastened to the boss part 31. Thus, by screwing the other side of the actuator motor 29 directly to the air conditioning case 20, even if the rigidity of the resin bracket members 80, 80 is not so high, the support rigidity of the actuator motor 29 is sufficiently high.

  Therefore, according to the fixing structure of the actuator motor 29 in the vehicle air conditioner 1 according to this embodiment, the actuator motor 29 is sandwiched between the pair of bracket members 80 and 80 and screwed to the air conditioning case 20. Thus, it is not necessary to screw the actuator motor 29 to the bracket as in the prior art, and the number of assembling steps can be reduced, and the screw preparation and screw hole processing for that purpose are not required, and the cost can be reduced. .

  Further, the shape of the bracket member 80 is optimized, the joining surface portion 81a of the holding portion 81 is stably joined to the front and back flat portions 29c of the actuator motor 29, and the fitting shaft 82 is firmly attached to the mounting hole 29b of the actuator motor 29. Furthermore, the actuator motor 29 is also held from the side by the extending wall portion 83, so that the holding of the actuator motor 29 by the bracket member 80 is sufficiently reliable.

  In addition, in this embodiment, the bracket member 80 is a resin molded product having a high degree of freedom in shape, and thus the optimum shape as described above can be obtained easily and inexpensively. Since the actuator motor 29 is sandwiched between the two bracket members 80, 80 having the same shape, the cost can be reduced by sharing the parts.

  Further, when formed of a resin material in this way, there is a possibility that the rigidity of the bracket member 80 may be lower than that of a metal member. In this embodiment, one side of the actuator motor 29 is a bracket as described above. While screwed to the air conditioning case 20 via the members 80, 80, the other side is directly screwed to the air conditioning case 20, so that the support rigidity of the actuator motor 29 can be sufficiently secured.

  In the above-described embodiment, two insertion shafts 82 are provided in each bracket member 80. However, this may be only one or three corresponding to the mounting holes 29b of the actuator motor 29. Books can also be provided.

  Further, a fitting portion can be formed on the flange portion 84 of the bracket member 80 so as to be fitted to the other flange portion 84 to be overlaid. When 29 is clamped, the bracket members 80, 80 can be connected together so that they can be combined with the actuator motor 29 integrally.

  In the above embodiment, the bracket is constituted by the same bracket members 80, 80 formed of a resin material, but is not limited thereto. For example, although not shown, a bracket member having a sandwiching portion, an extending wall portion, and a flange portion can be manufactured by press molding of a thin plate as in the above embodiment, and in this case, it is difficult to provide the insertion shaft 82. A convex portion may be provided at a corresponding location to form an insertion portion.

  Alternatively, as shown in FIG. 12, for example, one bracket member 85 is a resin molded product, which has a U-shaped cross section provided with extending wall portions 85b and flange portions 85c on both sides of the sandwiching portion 85a. On the other hand, the other bracket member 86 can be manufactured by press molding of a thin plate. In this case, the actuator motor 29 can be held from both sides by the U-shaped bracket member 85 and can be screwed to the air conditioning case 20 on both sides.

  In that case, it is preferable that the insertion shaft 85d of one bracket member 85 has a length that penetrates the attachment hole 29b of the actuator motor 29, and thus the tip of the insertion shaft 85d that penetrates the attachment hole 29b is inserted. The other bracket member 86 is provided with a hole 86a. In this way, when the actuator motor 29 is sandwiched between the pair of bracket members 85, 86, the bracket members 85, 86 can be connected to each other and combined together with the actuator motor 29.

  Further, although not shown, a bracket member having a U-shaped cross section such as one bracket member 85 shown in FIG. 12 is formed of resin or thin plate, and the actuator motor 29 is assembled by combining the bracket members having the same shape. It can also be clamped.

  Furthermore, it goes without saying that the actuator motor fixing structure according to the present invention can be applied not only to the attachment of the actuator motor 29 in the air conditioning unit 2 of the vehicle air conditioner 1 but also to the blower unit 6 as described above.

  As described above, the present invention can devise the structure of the bracket for fixing the actuator to the case of the air conditioner, reduce the number of man-hours and screws required for assembly, and reduce the cost. Therefore, it is particularly suitable when applied to an automobile air conditioner that is mass-produced.

It is the perspective view seen from the vehicles back-and-forth direction back side of the air-conditioner for vehicles concerning an embodiment. It is the perspective view similarly seen from the front side. It is the perspective view which looked at the air-conditioning unit of the vehicle air conditioner from the vehicle front-back direction rear side. It is the side view which looked at the air-conditioning unit from the vehicle width direction right side. It is the layout figure which looked at the inside of an air-conditioning unit from the vehicle width direction right side. It is an enlarged view of the link mechanism seen from the vehicle width direction right side. It is a front view of a drive side link member. It is the perspective view which looked at the ventilation unit from the diagonal left side of the vehicle front-back direction rear side. It is a perspective view from the diagonal right side similarly. It is a perspective view of an inside / outside air switching damper. It is a disassembled perspective view which shows the fixing structure of an actuator motor. FIG. 12 is a view corresponding to FIG. 11 according to a modified example. It is FIG. 11 equivalent figure which concerns on a prior art example.

1 Vehicle air conditioner 20 Air conditioning case (case)
29 Actuator motor 29a Output shaft (output unit)
29b Mounting hole 29c Plane portion 80, 85, 86 Bracket member (clamping member)
81,85a Nipping part (main part)
81a Joint surface part 82, 85d Insertion shaft (insertion part)
83, 85b Extension wall part 84, 85c Flange part (fastened part)

Claims (9)

An actuator in which a mounting hole for inserting a screw to be screwed into a case of a vehicle air conditioner is fixed to the case via a bracket,
The bracket comprises a pair of clamping members that cooperate to clamp the actuator,
Each clamping member is provided with a fastened portion that is overlapped with each other and fastened to the case,
An actuator fixing structure for an air conditioner for vehicles, wherein at least one clamping member is provided with a fitting portion that is fitted into a mounting hole of the actuator. The actuator has a flat portion on each of the front side where the output unit is provided and the rear side on the opposite side,
Each holding member of the bracket includes a flat joint surface part joined to each flat part before and after the actuator,
2. The actuator fixing structure according to claim 1, wherein an insertion portion is formed so as to protrude from the joint surface portion of at least one clamping member.   At least one clamping member includes an extending wall portion extending in a protruding direction of the fitting portion continuously from the main body portion where the joint surface portion with the actuator is formed, and the extending wall portion abuts against the side portion of the actuator. The actuator fixing structure according to claim 1, wherein the actuator fixing structure is provided.   At least one of the clamping members is provided with an extending wall portion on both sides of the main body portion and is formed in a U-shaped cross section, and a fastened portion is formed continuously on each of the extending wall portions. The actuator fixing structure according to claim 3, wherein:   At least one clamping member is provided with an extending wall portion only on one side of the main body portion, is formed in an L-shaped cross section, and a fastened portion is continuously formed on the extending wall portion. The actuator fixing structure according to claim 3.   6. The actuator fixing structure according to claim 3, wherein each of the holding members has the same shape having a fitting portion and an extending wall portion. One clamping member is provided with an insertion shaft having a length penetrating the mounting hole of the actuator as an insertion portion,
The actuator holding structure according to any one of claims 3 to 5, wherein the other holding member is provided with a hole portion into which a tip of an insertion shaft penetrating the mounting hole is inserted.   The fitting part is formed in the to-be-fastened part of each clamping member so that it may fit with the other to-be-fastened part piled up mutually. Actuator fixing structure.   9. The actuator fixing structure according to claim 1, wherein at least one clamping member of the bracket is a molded product of resin.

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