JP4252408B2 - Air conditioning unit for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioning unit mainly used in an automobile.

  FIG. 10 is a side view showing an example of a conventional product. The air-conditioning unit a shown in this figure is described in Patent Document 1, and an air passage through which air flows flows is formed in the unit case b, and air is sent from the air passage to the outside of the unit case b in the unit case b. Are provided with a vent outlet c, a defroster outlet d and a foot outlet e.

  At the vent outlet c, a first mode door f for adjusting the outflow from the vent vent outlet c is arranged. The first mode door f has a closed position for opening the air passage toward the defroster air outlet d and the foot air outlet e and closing the vent air outlet c, and air flow toward the defroster air outlet d and the foot air outlet e. It rotates between the open position where the path is closed and the vent outlet c is opened.

  A second mode door g for adjusting the outflow of the blown air from the defroster air outlet d and also adjusting the outflow of the airflow from the foot air outlet e is disposed in the air passage toward the defroster air outlet d and the foot air outlet e. Has been. The second mode door g rotates between a foot position that closes the defroster outlet d and opens the foot outlet e, and a defroster position that opens the defroster outlet d and closes the foot outlet e. It is supposed to be.

  The unit case b is provided with a link mechanism h that rotates the first and second mode doors f and g to a predetermined rotation position in a predetermined air blowing mode. The link mechanism h includes a first operation lever h1 fixed to the rotation shaft of the first mode door f, and a second operation lever h2 fixed to the rotation shaft of the second mode door g. In addition, a rotary main link h4 that engages with the first operating lever h1 and also engages with the second operating lever h2 via the intermediate link h3 is provided. The main link h4 is connected to a drive cable (not shown) that rotates the main link h4 to a predetermined rotation position in a predetermined air blowing mode.

  The intermediate link h3 is rotatably attached to the unit case b and has an arm extending in two directions from the center of rotation. An engagement pin j that is loosely fitted in the cam hole i of the second operating lever h2 is projected from the tip of one arm. A cam hole k having a predetermined shape is formed in the other arm. The intermediate link h3 is for reversing the rotation direction of the second mode door g in the direction opposite to the rotation direction of the first mode door f.

  The main link h4 has an arm extending in three directions from the center of rotation. An engagement pin n that is loosely fitted in the cam hole m of the first operating lever h1 is projected from the distal end portion of the first arm. An engagement pin p that is loosely fitted in the cam hole k of the intermediate link h3 is projected from the tip of the second arm. An attachment hole q for attaching a drive cable (not shown) is provided at the tip of the third arm.

  In the air conditioning unit a, by operating a drive cable (not shown) to rotate the main link h4, in the vent mode, the first mode door f has an air passage toward the defroster outlet d and the foot outlet e. The vent outlet c is closed and opened.

In the defroster mode, the first mode door f opens the air passage toward the defroster outlet d and the foot outlet e to close the vent outlet c, and the second mode door g opens the defroster outlet d. Thus, the foot outlet e is closed. In the foot mode, the first mode door f opens the air passage toward the defroster outlet d and the foot outlet e to close the vent outlet c, and the second mode door g closes the defroster outlet d. Then, the foot outlet e is opened.
Japanese Patent Laid-Open No. 9-20128

  By the way, in the air conditioning unit a, since each component (lever h1, h2, intermediate link h3, main link h4) of the link mechanism h is exposed, each component (lever h1, h2, intermediate) during the vehicle body assembly or the like. The link h3 and the main link h4) may be damaged.

  The present invention has been made based on such a conventional technique, and aims to provide a vehicle air conditioning unit that can reduce the possibility of breakage of the link mechanism.

In the invention of claim 1, a plurality of doors for opening and closing the air passage formed in the unit case, and a link mechanism for transmitting and outputting the output from the driving means to link and open the plurality of doors. In the vehicle air conditioning unit, the link mechanism is fixed to the rotation shaft of the door, and thereby an operation lever that rotates integrally with the rotation shaft of the door, and a base fixed to the unit case. And a main link that is rotatably or slidably supported by the base and that is engaged with the operating lever and rotates the operating lever in accordance with the output of the driving means. wherein the main link, is arranged between the base and the unit case, an end portion of the door rotation axis is provided exposed from the unit case, said actuating lever The rotating shaft is arranged coaxially with the door rotating shaft and is fitted and fixed to the exposed end of the door rotating shaft, and the base is fixed to the unit case in the state where the base is fastened and fixed. Engaging with the actuating lever, the moving axis of the actuating lever is prevented from moving in the direction opposite to the fitting direction with the door rotating shaft.

In the invention of claim 2, in vehicle air-conditioning apparatus according to claim 1, the fastening fixing force to the base of the unit case is fitted anti of the door rotation axis and the rotation axis of the operating lever It is arranged so as to face the force.

In the third aspect of the present invention, in the vehicle air-conditioning unit of the mounting according to claim 1 or 2 SL, and a link module the base and the actuating lever and main link constituting the link mechanism by assembling integrally The link module is attached to the unit case.

According to the first aspect of the present invention, since the operating lever and the main link are disposed between the base and the unit case, each component of the link mechanism is covered by the base, so that these components are protected. it can. Therefore, the possibility of breakage of the link mechanism is reduced. In addition, the base engages with the operating lever in a state where the base is fastened and fixed to the unit case, and the rotating shaft of the operating lever moves in the direction opposite to the fitting direction with the door rotating shaft. Since it is characterized by blocking, it is possible to reliably prevent the operating lever from falling off the door rotation shaft.

According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1 , the fastening fixing force of the base to the unit case opposes the fitting reaction force between the rotating shaft of the operating lever and the door rotating shaft. Therefore, the engagement between the rotating shaft of the operating lever and the door rotating shaft is more reliable.

According to the third aspect of the invention, in addition to claim 1 or 2 Symbol placement effect of the invention, the link modules preassembled integrally a link mechanism, wherein the wear take this link module unit case Therefore, the work efficiency of attaching the link mechanism to the unit case is improved. As a result, the assembly of the air conditioning unit is improved and the manufacturing cost is reduced.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of the invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a main part showing an embodiment of an assembly structure of a vehicle air conditioning unit according to the present invention. FIG. 2 is a perspective view of the main part showing a state before the link module of the vehicle air conditioning unit is attached. 3 is an exploded perspective view of the link module, FIG. 4 is a perspective view seen from another angle of the link module, FIG. 5 is an exploded perspective view for explaining the mounting state of the operating lever to the base, and FIG. 7 is an exploded perspective view seen from a different angle, FIG. 7 is a cross-sectional view for explaining the mounting state of the operating lever to the base, and FIG. 7A is a state before mounting the operating lever, and FIG. FIG. 8a is a front view of the end of the operating lever viewed from the direction of arrow a in FIG. 6, FIG. 8b is a side view, and FIG. 9a is a fitting hole for fitting the door rotation shaft of the operating lever. FIG. 9B is a perspective view showing FIG. It is a visual diagram.

"Overall structure of air conditioning unit"
The vehicle air conditioning unit of this embodiment is mounted in a vehicle interior space covered with an instrument panel of an automobile. In the unit case 2 of the vehicle air-conditioning unit 1, a spiral scroll chamber is formed in which a sirocco fan as a blower is accommodated. Further, in the unit case 2, an air passage that communicates with the scroll chamber and through which air from the sirocco fan flows is also formed. The air passage is formed along both side walls of the unit case.

  A cooling heat exchanger that cools the blown air and a heating heat exchanger that heats the blown air that has passed through the cooling heat exchanger are arranged in the air passage. Between the cooling heat exchanger and the heating heat exchanger, the blower that has passed through the cooling heat exchanger and the hot air passage that passes through the cooling heat exchanger and flows toward the heating heat exchanger and the cooling heat exchanger. An air mix door is arranged to adjust the air distribution ratio to the bypass passage that flows around the heat exchanger for heating. The confluence portion of the hot air passage and the bypass passage is configured as an air mix chamber that mixes the hot air and the cold air, and a vent air outlet and a defroster air outlet for blowing air out of the unit case 2 in the downstream of the air mix chamber. A foot outlet (not shown) is provided.

  In the air passage, a plurality of (four in this example) doors that selectively open and close the vent outlet and the defroster outlet and the foot outlet are arranged.

  The first mode door (vent door) is provided at an inlet of a vent outlet passage communicating with the vent outlet to adjust the outlet from the vent outlet, and an open position (vent position) for opening the vent outlet and the vent outlet. It rotates between a closed position for closing the outlet.

  The second mode door (defroster door) is provided at the inlet of the defroster outlet passage communicating with the defroster outlet to adjust the outlet from the defroster outlet, and opens the defroster outlet (defroster position). It rotates between a closed position for closing the air outlet.

  The third mode door (foot door) is provided at the inlet of the foot outlet passage to adjust the outlet from the foot outlet (not shown), and has an open position (foot position) for opening the foot outlet and a foot outlet. It rotates between a closed position and a closed position.

  The 4th mode door (composite mode door) is provided at a position where the shortest flow path from the bypass passage to the vent outlet and the shortest flow path from the hot air passage to the foot outlet can be opened and closed, and the shortest passage is opened. It rotates between a position and a closed position that closes the shortest flow path. The fourth mode door rotates to a position where the cool air flows through the shortest distance from the bypass passage toward the vent outlet at the time of full cool, and at the time of air mix, the selected air blow from the hot air passage and the bypass passage is selected. It is set to rotate to a position where the air blowing path to the outlet becomes long.

  In these mode doors, the rotation shafts 21 to 24 (note that the rotation shaft 24 of the fourth mode door is not shown and will be described only with reference numerals in the specification) are supported by bearings formed on both side walls of the unit case 2. 2 and 3, the end portions 21a to 24a of the rotating shafts 21 to 24 of each mode door are exposed from one side wall 2a, and each operation of the link mechanism 30 to be described later is exposed to the exposed end portions 21a to 24a. The levers 31 to 34 are attached so that the four mode doors open and close in conjunction with each other.

  Hereinafter, a link mechanism which is a characteristic part of the present invention will be described.

"Linking mechanism"
The link mechanism 30 includes four operating levers 31 to 34, a plate-like base 40, a rotary link plate 35 as a “main link”, and an intermediate link 36 as a “sub link”. Yes.

"Operating lever"
The operation levers 31 to 34 are fixed to the rotation shafts 21 to 24 of the mode doors and rotate integrally with the doors. In this example, the four operating levers 31 to 34 have the first operating lever 31 connected to the rotating shaft 21 of the first mode door (vent door) and the second operating lever 32 of the second mode door (defroster door). The third operating lever 33 is connected to the rotating shaft 23 of the third mode door (foot door), and the fourth operating lever 34 is connected to the rotating shaft 24 of the fourth mode door (composite mode door). The Each of the operating levers 31 to 34 is provided with rotating shafts 31 a to 34 a that are arranged coaxially with the door rotating shafts 21 to 24 and are fitted to the end portions 21 a to 24 a of the door rotating shafts 21 to 24. The rotating shafts 31a to 34a of the operating levers 31 to 34 are pivotally supported by the base 40 and have a structure in which shaft shake is unlikely to occur.

"base"
The base 40 is formed in a plate shape and is attached to the unit case 2 by screwing. The base 40 is formed with bearing holes 41 to 44 as bearing portions for supporting the rotating shafts 31a to 34a of the operating levers 31 to 34, and a rotating link plate 35 as a "main link" to be described later. And a bearing hole 45 as a bearing portion for supporting the rotation shaft 36a of the intermediate link 36 as a "sub link" to be described later. .

  The operation levers 31 to 34, the rotary link plate 35 and the intermediate link 36 constituting the link mechanism 30 are mounted on the back surface 40b (unit case side surface) side of the base 40, and a drive motor 38 as "drive means". Is mounted on the surface 40a (surface opposite to the unit case) side of the base. That is, since the operation levers 31 to 34, the rotary link plate 35, and the intermediate link 36 constituting the link mechanism 30 are disposed between the base 40 and the unit case 2, each component of the link mechanism 30 is configured by the base 40. (31-36) is covered. Thereby, these components (31-35) can be protected and the possibility that the link mechanism (30) will be damaged is low.

"Main link"
As described above, the rotary link plate 35 as the “main link” has its rotary shaft 35 a rotatably supported in the bearing hole 45 of the base 40. The rotary shaft 35a of the rotary link plate 35 is arranged coaxially with the output shaft 38a of the drive motor 38, and its tip is located on the surface 40a side of the base 40, and the output shaft 38a of the drive motor 38 is fitted. ing. Thereby, the rotation link plate 35 rotates around the rotation shaft 35 a according to the output of the drive motor 38.

  The rotary link plate 35 is formed with engagement grooves and engagement pins that engage with the engagement pins or the engagement grooves formed on the respective operation levers 31 to 34. In this example, engagement grooves 31m to 33m are formed in the first to third operation levers 31 to 33, and an engagement pin 34p is formed in the fourth operation lever 34, and the rotation link plate 35 is correspondingly formed. The engagement pins 35p, 35p, 35p that engage with the engagement grooves 31m to 33m of the first to third actuation levers 31 to 33 are formed, and the engagement pins 34p of the fourth actuation lever 34 are engaged. A mating engagement groove 35m is formed.

  The engaging groove 31m of the first operating lever 31 is engaged with engaging pins 35p, 35p, 35p of the rotary link plate 35 via an intermediate link 36, which will be described later. The four levers 32 to 34 rotate in the reverse direction.

"Sublink"
The intermediate link 36 as a “sub link” is engaged with the rotary link plate 35 and the first operating lever 31 to rotate the first operating lever 31 in the reverse direction to the other operating levers 32 to 34 as described above. . A first arm 36b and a second arm 36c project from the rotation shaft 36a of the intermediate link 36, and an engagement pin 36p that engages with the engagement groove 31m of the first operating lever 31 is provided on the first arm 36b. The second arm 36c is provided with an engagement groove 36m that engages with the engagement pin 35p of the rotary link plate 35.

"Action of link mechanism"
With the structure of the link mechanism 30 as described above, when the rotary link plate 35 is rotated by the drive motor 38, the four actuating levers 31 to 34 are rotated in conjunction with each other via the intermediate link 36 or not. As a result, the four mode doors rotate while interlocking.

“Assembly structure of air conditioning unit”
"Link module"
As shown in FIG. 2, the assembly structure of the vehicle air conditioning unit 1 configured as described above includes the base 40, the operation levers 31 to 34, the rotary link plate 35, and the intermediate link 36 that constitute the link mechanism 30 in advance. After the link module 30 is assembled, the link module 30 is attached to the unit case 2. In this embodiment, the link module 30 is integrally attached to the unit case 2 with the drive motor 38 also attached to the surface 40a of the base 40 of the link module 30.

  Here, the base 40 of the link module 30 supports the operating levers 31 to 34, the rotary link plate 35, and the rotary shafts 31 a to 36 a of the intermediate link 36 in the bearing holes 41 to 46 of the base 40. It will serve as a module substrate.

  Moreover, in this embodiment, the operating levers 31 to 34, the rotary link plate 35, and the rotary shafts 31a to 36a of the intermediate link 36 do not fall off once attached to the base 40 in order to improve the assembly property of the link module 30. It has become. Specifically, the locking claw R and the stopper S are provided in order from the insertion tip side to the insertion tip C of the rotation shafts 31a to 36a of the operating levers 31 to 34, the rotation link plate 35, and the intermediate link 36. Yes.

"Stopper and lock claw"
5 to 8 show only the shaft support structure of the rotating shaft of the second operating lever 32, the rotating shafts of the other operating levers 31, 33, 34, the rotating link plate 35 and the intermediate link 36 are also shown. Similarly, since the shaft support structure includes a stopper and a lock claw, detailed drawings are omitted.

  As shown in FIGS. 5 to 8, the stopper S comes into contact with the peripheral portions of the bearing holes 41 to 46 when the rotary shafts 31 a to 36 a are inserted into the bearing holes 41 to 46 of the base 40. It stops at the attached position. Further, the lock claw R allows the rotation shafts 31a to 36a to be inserted into the bearing holes 41 to 46 of the base 40, and is opposite to the insertion direction X of the rotation shafts 31a to 36a at the assembly position to the base 40. This prevents movement in the direction. With the positioning action of the stopper S and the lock claw R, the base 40 can be simply touched by inserting the operating levers 31 to 34 and the rotary link plates 35 and the rotary shafts 31a to 36a of the intermediate link 36 into the bearing holes 41 to 46 of the base 40. The actuating levers 31 to 34, the rotary link plate 35 and the intermediate link 36 can be assembled to each other, and the assembly of the link module 30 becomes easy. In addition, when the link module 30 is assembled to the unit case 2, the assembled components 31 to 36 are not dropped from the base 40 due to the positioning action of these stoppers S and lock claws R. Assembling property to the unit case 2 is also improved.

  Further, the rotation shafts 31a to 36a of the operation levers 31 to 34 and the rotation link plate 35 and the intermediate link 36 are formed in a cylindrical shape with a hollow insertion tip C. The insertion tip C extends along the axial direction from the insertion destination terminal. The insertion tip C is provided with flexible pieces E and F that can be bent in the radial direction. The lock claw R is formed on the flexible piece E of the insertion tip C. Therefore, due to the flexibility of the insertion tip C, the insertion force when the rotary shafts 31a to 36a including the lock claw R are inserted into the bearing holes 41 to 46 is reduced, and the assembling property of the link module 30 is improved. In this example, the insertion tip C is divided into eight, and as described above, the flexible piece E provided with the lock claw R on the outer peripheral side and the rib G on the inner peripheral side are formed so as not to be bent easily. The flexible pieces F are alternately provided, and the rigidity of the insertion tip C is ensured.

  Here, in a state where the base 40 is fastened and fixed to the unit case 2, the base 40 is engaged with the peripheral portions of the bearing holes 41 to 44 and the stoppers S of the rotating shafts 31 a to 34 a of the operating levers 31 to 34. The rotation shafts 31a to 34a of the 34 are prevented from moving in the direction opposite to the fitting direction Y of the door rotation shafts 21 to 24 to the exposed end portions 21a to 24a, and the door rotation shafts 21 to 24 of the operating levers 31 to 34 are prevented. The drop-out from is reliably prevented. Moreover, since the fastening force of the base 40 to the unit case 2 is arranged so as to oppose the fitting reaction force between the operating lever rotating shafts 31a to 34a and the door rotating shafts 21 to 24, the operating lever rotates. The fitting between the shafts 31a to 34a and the door rotation shafts 21 to 24 is reliably maintained.

"effect"
With the above configuration, this embodiment has the following effects.

  First, since the operating levers 31 to 35, the rotary link plate 35, and the intermediate link 36 are disposed between the base 40 and the unit case 2, each component of the link mechanism 30 is covered by the base 40. Therefore, each component of the link mechanism 30 can be protected, and the possibility of breakage of the link mechanism 30 can be reduced.

  Secondly, with the base 40 fastened and fixed to the unit case 2, the base 40 engages with the operation levers 31 to 34, and the engagement direction of the operation lever rotation shafts 31a to 34a with the door rotation shafts 21 to 24 Is characterized in that the movement levers 31 to 34 are prevented from falling off the door rotation shafts 21 to 24.

  Thirdly, the base 40 unit case 2 is fixed by matching the fastening direction Y of the base 40 to the unit case 2 with the fitting direction Y of the operating lever rotating shafts 31a to 34a to the door rotating shafts 21 to 24. 2 is arranged so as to oppose the fitting reaction force of the operating lever rotating shafts 31a to 34a from the door rotating shafts 21 to 24. Therefore, the operating lever rotating shafts 31a to 34a and the door rotating shaft are arranged. The fitting with 21-24 is reliably maintained.

  Fourth, according to this embodiment, after the actuating levers 31 to 34 and the rotating link plate 35 and the intermediate link 36 and the base 40 constituting the link mechanism 30 are assembled together in advance as a link module 30, Since the link module 30 is assembled to the unit case 2, the efficiency of attaching the link mechanism 30 to the unit case 2 is improved. As a result, the assembling property of the air conditioning unit 1 is improved and the manufacturing cost is reduced.

  Fifth, the base 40 includes bearing holes 41 to 46 that pivotally support the rotation levers 31 to 34, the rotation link plate 35, and the rotation shafts 31 a to 36 a of the intermediate link 36, thereby functioning as a module substrate of the link mechanism 30. To do. For this reason, when the link mechanism 30 is modularized, it is not necessary to use other connecting members, so that the number of parts can be reduced and the manufacturing cost of the air conditioning unit 1 can be further reduced.

  In this embodiment, the operation levers 31 to 34, the rotation link plate 35 and the intermediate link 36 are provided with the rotation shafts 31a to 36a, while the base 40 is provided with the bearing holes 41 to 42. In this case, the operating lever 31 and / or the rotary link plate 35 and / or the intermediate link 36 may be provided with bearing holes, while the base 40 may be provided with a rotating shaft constituting the center of rotation.

  Sixth, since the rotation shafts 31a to 34a of the operation levers 31 to 34 are provided with the lock claws R and the stoppers S for positioning the operation levers 31 to 34 at predetermined assembly positions of the base 40, the base 40 By simply inserting the rotating shafts 31a to 34a of the operating levers 31 to 34 into the bearing holes 41 to 44, the operating levers 31 to 34 can be assembled to the base 40 with one touch, and the assembly of the link module 30 can be improved. The same applies to the rotary link plate 35 and the intermediate link 36.

  Seventh, flexible pieces E and F that can be bent inward are provided at the insertion tip C of the rotating shafts 31a to 34a of the operating levers 31 to 34, and the lock claw R is formed on the flexible piece E. Therefore, the low insertion force of the rotating shafts 31a to 34a into the bearing holes 41 to 44 can be reduced, and the assemblability of the link module 30 can be improved. The same applies to the rotary link plate 35 and the intermediate link 36.

  Eighth, since the drive motor 38 is attached and fixed to the base 40 of the link module 30, a bracket for attaching and fixing the drive motor 38 to the unit case 2 becomes unnecessary. Therefore, the number of parts is reduced, the number of assembly steps is reduced, and the manufacturing cost can be further reduced.

  Ninth, since the link module 30 having the drive motor 38 assembled in advance is assembled in the unit case 2, the assembly work efficiency of the air conditioning unit 1 is further improved.

  In this embodiment, the link mechanism 30 includes the intermediate links 36 in addition to the operation levers 31 to 34 and the rotary link plate 35, so that at least one operation lever 31 rotates in the reverse direction to the other operation levers 32 to 34. Therefore, there is an advantage that the degree of freedom in designing the door opening / closing pattern is high.

  In short, according to the present invention, the link mechanism is fixed to the rotating shaft of the door, and thereby the operating lever that rotates integrally with the rotating shaft of the door, the base fixed to the unit case, and the base And a main link that is rotatably or slidably supported and is engaged with the operating lever and rotates the operating lever in accordance with the output of the drive means, and the operating lever and the main link are Since it is arranged between the base and the unit case, each component of the link mechanism is covered by the base. Therefore, these components can be protected, and the possibility of breakage of the link mechanism is reduced.

FIG. 1 is a perspective view of a main part showing an embodiment of an assembly structure of a vehicle air conditioning unit according to the present invention. FIG. 2 is a perspective view of a main part showing a state before the link module of the vehicle air conditioning unit is attached. FIG. 3 is an exploded perspective view of the link module including a mounting position. FIG. 4 is a perspective view of the link module viewed from another angle. FIG. 5 is an exploded perspective view for explaining the mounting state of the operating lever to the base.

6 is an exploded perspective view seen from an angle different from FIG. FIG. 7 is a cross-sectional view for explaining the mounting state of the operating lever to the base. FIG. 7A is a state before the operating lever is mounted, and FIG. 7B is a diagram showing the mounting state of the operating lever. 8A is a front view of the end of the operating lever as viewed from the direction of arrow a in FIG. 6, and FIG. 8B is a side view. FIG. 9a is a perspective view showing a fitting hole into which the door rotation shaft of the operating lever is fitted, and FIG. 9b is a perspective view seen from a different angle from FIG. 9a. FIG. 10 is a diagram illustrating an example of a conventional vehicle air conditioning unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle air-conditioning unit 2 ... Unit cases 21-24 ... Door rotating shaft 21a-24a ... Exposed end part 30 ... Link module (link mechanism)
31-34 ... Actuating levers 31a-34a ... Rotating shaft 35 ... Rotating link plate (main link)
35a ... Rotating shaft 36 ... Intermediate link 36a ... Rotating shaft 38 ... Drive motor 40 ... Base 40a ... Front surface 40b ... Back surface X ... Insertion direction Y ... Fitting direction / fastening direction

Claims (3)

A plurality of doors for opening and closing the air passage formed in the unit case (2), and a link mechanism (30) for transmitting and outputting the output from the drive means (38) to open and close the plurality of doors in conjunction with each other. In the vehicle air conditioning unit (1) provided,
The link mechanism (30) is fixed to the rotating shafts (21 to 24) of the door, so that the operating levers (31 to 34) rotate integrally with the rotating shafts (21 to 24) of the door; A base (40) fixed to the unit case (2), and supported by the base (40) so as to be rotatable or slidable and engaged with the operating levers (31 to 34), and the driving means ( 38) and a main link (35) for rotating the operating lever (31 to 34) according to the output of 38),
The actuating levers (31 to 34) and the main link (35) are disposed between the base (40) and the unit case (2), and ends of the door rotation shafts (21 to 24) are Exposed from the unit case (2), and the rotation shafts (31a to 34a) of the operating levers (31 to 34) are arranged coaxially with the door rotation shafts (21 to 24) to rotate the door. It is fitted and fixed to the exposed ends (21a to 24a) of the shafts (21 to 24),
In a state where the base (40) is fastened and fixed to the unit case (2), the base (40) engages with the operating levers (31 to 34) to rotate the rotating shafts (31 to 34) of the operating levers (31 to 34). The vehicle air conditioning unit (1) is characterized in that it prevents movement of 31a to 34a) in a direction opposite to the fitting to the door rotation shaft (21 to 24). In the vehicle air conditioning unit (1) according to claim 1,
  The fastening fixing force of the base (40) to the unit case (2) is a reaction force for fitting the rotating shafts (31a to 34a) of the operating levers (31 to 34) and the door rotating shafts (21 to 24). The air conditioning unit for vehicles (1) characterized by being arranged so as to oppose. In the vehicle air conditioning unit (1) according to claim 1 or 2,
  The base (40), the operating levers (31 to 34) and the main link (35) constituting the link mechanism (30) are integrally assembled to form a link module (30).
  The vehicle air conditioning unit (1), wherein the link module (30) is attached to the unit case (2).

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