JP2006341707A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle, which is assembled by penetrating a pivoted door 22 with a right and left integrated body through a center plate 9, preventing degradation in isolation at the center plate 9. <P>SOLUTION: A penetration hole portion other than an axial penetration portion 23a into which a pivot 22a of a door penetration hole 23 is penetrated is provided with a cover member 24 for sealing after insertion of the pivoted door 22. Therefore, it is possible to improve isolation at the center plate 9 for prevention of the door penetration hole 23 from being used as a communicating hole for right and left air passages. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner capable of partitioning an air conditioning case into a plurality of air passages and performing independent air conditioning in each of the plurality of air passages.

  In recent years, there has been an increase in vehicle air-conditioning devices with so-called left-right independent control, in which air-conditioning settings can be varied independently on the left and right sides of the vehicle, for example, on the driver's seat side and the passenger seat side. This air-conditioning unit with independent left and right control can be broadly divided into specifications, and the left and right completely independent control that can set not only the air temperature but also the air-conditioning air blowing mode independently on the driver's seat and passenger's side, and the blowing mode is driving There is a left and right independent temperature control that is common to the seat side and the passenger seat side, and that can set independently only the blown air temperature on the driver seat side and the passenger seat side.

  The air conditioning unit of the left and right completely independent control is configured such that the air passage in the air conditioning case is divided into a driver seat side and a passenger seat side by a partition plate at the center of the left and right, and the air mix door for adjusting the temperature is also blown out to switch the blowout port. The mouth switching door is also configured separately on the left and right sides, and drive control is performed on the left and right separately.

  In contrast, the air conditioning unit with independent left and right temperature control described below divides the air passage in the air conditioning case into the driver's seat side and the passenger's seat side by the left and right central partition plates, and the air mix door that adjusts the temperature Although it is the same to separately drive and control left and right separately, the left and right common outlet switching doors are assembled with a partition plate inserted in the center of one door and driven either left or right Will be controlled.

As a conventional technique related to the structure of such an air conditioning unit with independent left and right temperature control, there is one disclosed in Patent Document 1 below. In the technique shown here, a door through hole for inserting the door is opened in the partition plate, the partition plate is fitted to the fitting portion of the one-side case, and then the door is inserted into the previous door through hole and assembled. The assembly structure is such that the case on the other side is fitted. Then, by setting the previous door through hole as a door position that requires the most separation between the two air passages, the door attempts to restrict ventilation from the door through hole.
JP 11-189024 A

  However, there is a problem that satisfactory separation cannot be obtained simply by aligning the door through hole and the door position. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to separate a partition plate in a vehicle air conditioner having an assembly structure in which a left and right shaft pivoting door penetrates the partition plate. An object of the present invention is to provide a vehicle air conditioner that does not deteriorate the performance.

In order to achieve the above object, the present invention employs technical means described in claims 1 to 4. That is, in the invention according to claim 1, the partition plate (9) for partitioning the air conditioning case (2) into a plurality of air passages;
A pivoting door (22) that pivots within a plurality of air passages to change the flow of air flowing therethrough,
The partition plate (9) is provided with a door through hole (23) through which the shaft rotating door (22) is inserted in the direction of the rotating shaft (22a), and the air conditioning case (2) using the door through hole (23). In the vehicle air conditioner having a structure in which the shaft turning door (22) is assembled,
A lid member (24) is provided for closing a through hole portion other than the shaft through portion (23a) through which the rotation shaft (22a) of the door through hole (23) passes, after the shaft rotation door (22) is inserted. It is said.

  According to the first aspect of the present invention, the door through-hole (23) can be prevented from becoming a communication hole for the left and right air passages, so that the separation at the partition plate (9) can be improved.

  Moreover, in invention of Claim 2, in the vehicle air conditioner of Claim 1, a cover member (24) is a partition plate via the hinge part (H) at the one end side of a door through-hole (23). It is characterized by being formed integrally with (9). According to the second aspect of the present invention, the separability at the partition plate (9) can be improved while following the conventional assembly structure without increasing the number of parts.

  Further, in the invention according to claim 3, in the vehicle air conditioner according to claim 1 or 2, in order to maintain the posture of the lid member (24) after closing the door through hole (23), An engaging portion (23b, 24a) is provided between the door through hole (23) and the lid member (24). According to the third aspect of the present invention, the lid member (24) does not hinder the rotation of the shaft rotation door (22).

According to a fourth aspect of the present invention, in the vehicle air conditioner according to any one of the first to third aspects, the air passage for the right seat air and the air passage for the left seat air are separated. In the so-called left and right independent temperature control unit (1) for adjusting the temperature,
The shaft turning door (22) is characterized in that it is a door for turning the door substrate portion (22c, 22d) disposed in each of the air passages by one turning shaft (22a). According to the fourth aspect of the present invention, in the left and right independent temperature control unit (1), the air is separated from the left and right, and the air is controlled by separately controlling the left and right. All doors arranged downstream of the mix doors (7, 8) can be applied.

  Specifically, it is applied to face doors, foot doors, defroster doors, face / foot doors, foot defrosters doors that combine these functions, and hot air bypass doors and cold air bypass doors in the embodiments described later. The separability in (9) can be improved. Incidentally, the reference numerals in parentheses of the above means are examples showing the correspondence with the specific means described in the embodiments described later.

(First embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view showing an internal structure of an air conditioning unit 1 according to an embodiment of the present invention. The vehicle air conditioner according to the present embodiment includes an air conditioning unit 1 with independent left and right temperature control capable of independently adjusting the temperature on the driver's seat side and on the passenger seat side.

  The air-conditioning unit 1 has a so-called semi-center layout, and the air-conditioning unit 1 is disposed at a substantially central portion in the left-right direction of the vehicle, inside the instrument panel in front of the passenger compartment. The arrows in FIG. 1 indicate the mounting direction of the air conditioning unit 1 with respect to the vertical and longitudinal directions of the vehicle. A blower unit (not shown) that blows air for air conditioning to the air conditioning unit 1 is arranged offset to the side of the passenger seat side of the air conditioning unit 1.

  As is well known, this blower unit supplies an air-conditioning unit 1 with an internal / external air switching box for switching and introducing vehicle interior air (inside air) or vehicle exterior air (outside air) and air (inside air or outside air) sucked from the inside / outside air switching box. A centrifugal fan that blows air toward and a blower that includes an electric motor are provided.

  The air conditioning unit 1 has an air conditioning case 2 made of resin, and is provided with air from a blower unit (not shown) on the side of the front side of the passenger seat side (front position of the evaporator 3) closest to the vehicle. An air inlet 5 through which air flows is formed. The blown air flowing in from the air inlet 5 passes through the evaporator 3 and the heater core 4 inside the air conditioning case 2 to form an air passage that flows from the vehicle front side toward the vehicle rear side.

  In this air passage, the inside of the air conditioning case 2 is partitioned into a plurality of air passages by a center plate (partition plate in the present invention) 9 (see FIGS. 2 and 3). Specifically, the center plate 9 is arranged on the air downstream side of the evaporator 3 in the air conditioning case 2 and partitions the air downstream side of the evaporator 3 into a left seat air passage and a right seat air passage. In the air passage in the air conditioning case 2, an evaporator 3 is disposed on the front side of the vehicle, and a heater core 4 is disposed on the rear side of the vehicle.

  As is well known, the evaporator (refrigerant evaporator) 3 is a cooling heat exchanger that cools the air-conditioning air by absorbing the latent heat of evaporation of the refrigerant in the refrigeration cycle from the air-conditioning air. The heater core 4 is a heating heat exchanger that heats air-conditioning air using cooling water (hot water) of the vehicle engine as a heat source fluid. A cold air bypass passage 6 is formed in the upper part of the heater core 4, and a plate-like left seat side air mix door 7 and a right seat side air mix door 8 (not shown) are located immediately downstream (rear side of the vehicle) of the evaporator 3. Are arranged so as to be rotatable about the rotation shafts 7a and 8a.

  The air mix doors 7 and 8 adjust the air volume ratio between the cool air passing through the cool air bypass passage 6 and the warm air passing through the heater core 4 to control the temperature of the air blown into the vehicle interior to a desired temperature. It constitutes air temperature control means. Further, a hot air passage 10 is formed in a portion immediately after the heater core 4, and hot air from the hot air passage 10 and cold air from the cold air bypass passage 6 are mixed in the air mixing unit 11.

  A plurality of blowing openings are formed on the downstream side of the air passage of the air conditioning case 2, and among these blowing openings, the defroster opening 12 is a substantially central portion in the vehicle front-rear direction on the upper surface of the air conditioning case 2. The air conditioning case 2 is opened inside. The defroster opening 12 blows conditioned air toward the inner surface of the vehicle front window glass through a defroster duct (not shown). The defroster opening 12 is opened and closed by a plate-like defroster door 13 that can rotate around a rotation shaft 13a.

  Next, the face opening 15 opens at a position on the rear side of the vehicle with respect to the defroster opening 12 on the upper surface of the air conditioning case 2. From the face opening 15, cold air is mainly blown out toward the chest of the passenger in the passenger compartment through a face duct (not shown). The face opening 15 is opened and closed by a plate-like face door 16 that is rotatable about a rotation shaft 16a.

  Next, the foot opening 17 opens to the lower side of the face opening 15 in the air conditioning case 2, and the downstream side of the foot opening 17 includes a front foot outlet 18 that opens to the left and right sides of the air conditioning case 2. The air-conditioning case 2 communicates with the rear foot outlet 20 that opens downward in the vehicle rear side.

  Warm air is mainly blown out from the front foot outlet 18 toward the feet of the front seat occupant, and from the rear foot outlet 20 through the rear foot duct (not shown) The hot air is mainly blown out. The foot opening 17 is opened and closed by a plate-like foot door 19 that can rotate about a rotation shaft 19a.

  The left side face outlet and the foot outlet are respectively provided in the left case 2A (see FIG. 2) and open to the left side air passage, and the right side face outlet and the foot outlet are respectively It is provided in the right case 2B (see FIG. 2) and opens to the right seat side air passage, and the defroster outlet 12 opens to both the left seat side air passage and the right seat side air passage.

  In the present embodiment, the hot air bypass opening 21 is provided in the partition wall 14 in the air conditioning case 2 immediately downstream (the vehicle rear side) of the heater core 4. The warm air bypass opening 21 is opened and closed by a plate-like warm air bypass door (shaft rotating door referred to in the present invention) 22 that can rotate around a rotating shaft 22a.

  The hot air bypass door 22 is adapted to be interlocked with other doors by a link mechanism (not shown) arranged on the outer surface of the air conditioning case 2, and the mode of the blowout port is the foot or foot defroster mode. When the air mix doors 7 and 8 block the cool air bypass passage 6 (position shown in FIG. 1), the hot air bypass door 22 opens when the air blows in the maximum hot state (maximum heating state) in which all of the blown air passes through the heater core 4 (see FIG. 1). 1), the amount of warm air that flows from the warm air bypass opening 21 to the foot outlets 18 and 20 and blows out to the feet of the occupants is increased.

  FIG. 2 is an exploded perspective view for explaining a schematic assembly structure of the air conditioning unit 1 shown in FIG. 1, and illustrates an assembly structure of the center plate 9, doors 7, 8, 16 and the like in the air conditioning case 2. . In FIG. 2, an exploded view of an air conditioning unit having a slightly different shape from the air conditioning unit 1 of FIG. 1 is used. Further, both heat exchangers 3 and 4 and some doors 13, 19 and 22 are omitted.

  When assembling the air conditioning unit 1, first, the left air mix door 7 is assembled from above with the left case 2A facing down. Then, the center plate 9 is assembled to the left case 2A. Next, mode doors such as the face door 16 are inserted into the left case 2A from the notched portion of the center plate 9 or a door through hole 23 described later and assembled. Then, the right air mix door 8 is stood on the center plate 9, and the right case 2 </ b> B is fitted to the left case 2 </ b> A while picking up the rotation shaft end of each door to complete the air conditioning unit 10.

  In the air conditioning unit 1, one end of the rotation shaft of each door protrudes to the outside of the air conditioning case 2, and the blowing mode switching doors 13, 16, and 19 are not shown through a mode unit link mechanism (not shown). Connected to The temperature adjusting doors 7, 8, and 22 are connected to a temperature adjusting actuator (not shown) that is a driving means via a temperature adjusting unit link mechanism (not shown).

  The doors are opened and closed by these two actuators, and these actuators are energized and controlled by an electronic control unit (ECU) (not shown). In addition, about the assembly | attachment of both the heat exchangers 3 * 4 and the link mechanism etc. which are not illustrated here, since it is a well-known method similar to the past, description is abbreviate | omitted.

  In the example of FIG. 1, each of the openings 12, 15, 17, and 21 is opened and closed by a total of four doors 13, 16, 19, and 22, but as is well known, the defroster openings 12 and the face opening 15 may be switched and opened by a common door, or the face opening 15 and the foot opening 17 may be switched and opened by a common door. .

  Next, the main part of the present invention will be described. FIG. 3 is a plan view of the center plate 9 in the first embodiment of the present invention in FIG. 2, and FIG. 4 is a portion showing the pivoting door 22 and the door through hole 23 of the center plate 9 in FIG. It is a perspective view. FIG. 5 is a partial longitudinal sectional view showing the door through hole 23 of the center plate 9 shown in FIG.

  The center plate 9 is provided with a door through hole 23 into which a pivoting door such as a warm air bypass door 22 is inserted, and one end of the door through hole 23 is provided with a hinge portion H (see FIG. 5). A lid member 24 is provided to close a through hole portion other than the shaft through portion 23a through which the rotation shaft 22a of the door through hole 23 passes. As shown in FIG. 4, the shaft rotation door 22 is a door for rotating the door substrate portions 22 c and 22 d arranged in the air passages by the single rotation shaft 22 a. Has a notch 22b.

  And after inserting the axis | shaft rotation door 22 in the center plate 9, the hinge part H of the cover member 24 is bent, and a through-hole part is covered and closed. However, since there is generally only a small gap between the center plate 9 and the cut portion 22b of the shaft turning door 22, the shaft is moved to a position that does not interfere with the locus of closing the lid member 24 after the shaft turning door 22 is inserted. The lid member 24 is closed after the rotation door 22 is rotated. Further, as a locking portion for maintaining the posture of the lid member 24 after closing the door through-hole 23, a locking recess 24a is formed on the distal end side of the lid member 24, and the inner surface of the door through-hole 23 corresponding thereto is provided. A locking projection is provided on one end side.

  Next, features and effects of this embodiment will be described. First, a cover member 24 that closes a through hole portion other than the shaft through portion 23 a through which the rotation shaft 22 a of the door through hole 23 passes is provided after the shaft rotation door 22 is inserted. According to this, since the door through-hole 23 can be prevented from becoming a communication hole of the left and right air passages, the separability at the center plate 9 can be improved.

  The lid member 24 is formed integrally with the center plate 9 via a hinge portion H on one end side of the door through hole 23. According to this, the separability at the center plate 9 can be improved while following the conventional assembly structure without increasing the number of parts. Further, in order to maintain the posture of the lid member 24 after the door through hole 23 is closed, locking portions 23 b and 24 a are provided between the door through hole 23 and the lid member 24. According to this, the lid member 24 does not hinder the rotation of the shaft rotation door 22.

  Further, in the so-called left and right independent temperature control unit 1 that adjusts the temperature separately for the air passage for the right seat air and the air passage for the left seat air, the pivot door 22 is arranged in each of the air passages. The door substrate portions 22c and 22d to be rotated are doors that are rotated by one rotation shaft 22a.

  According to this, in the left and right independent temperature control unit 1, it is arranged on the downstream side of the air mix doors 7 and 8 except for the air mix doors 7 and 8 that are separately configured on the left and right sides and that are driven and controlled separately on the left and right sides. All applicable doors will be applicable. Specifically, the center plate is applied to face doors, foot doors, defroster doors, face / foot doors and foot defrosters doors that combine these functions, and hot air bypass doors and cold air bypass doors in embodiments described later. The separability at 9 can be improved.

(Second Embodiment)
FIG. 6 is a partial longitudinal sectional view showing the door through hole 23 of the center plate 9 in the second embodiment of the present invention. Features that are different from the first embodiment will be described. In the present embodiment, the lid member 24 is provided separately from the center plate 9, and the lid member 24, which is thus a separate part, is configured to be fitted into the door through hole 23 after the pivoting door 22. There may be. In this case, the lid member 24 may be formed of a material other than resin, such as a rubber member.

(Other embodiments)
In the above-described embodiment, the air passage is divided into the left seat side air passage and the right seat side air passage and is applied to the left and right independent temperature control unit that adjusts the temperature. However, the present invention is not limited to this, and the vehicle interior In a so-called internal / external air two-layer flow unit that performs heating separately into an air passage for air and an air passage for vehicle exterior air, the amount of air that passes through the heater core and the amount of air that bypasses the heater core in both air passages are adjusted. It may be applied to a so-called air mix door.

  Furthermore, in the above-described embodiment, the present invention is applied to a general plate door as a pivoting door. However, the present invention is not limited to this as long as the door has a pivoting shaft. You may apply to the butterfly door which has arrange | positioned the rotating shaft, the rotary door which used the circular arc surface with respect to the rotating shaft as a door surface.

It is a longitudinal cross-sectional view which shows the internal structure of the air conditioning unit 1 concerning embodiment of this invention. It is a disassembled perspective view explaining the schematic assembly structure of the air conditioning unit 1 shown in FIG. It is a top view of the center plate 9 in 1st Embodiment of this invention in FIG. It is a fragmentary perspective view which shows the axis | shaft rotation door 22 and the door through-hole 23 of the center plate 9 of FIG. It is a fragmentary longitudinal cross-section which shows the door through-hole 23 of the center plate 9 shown in FIG. It is a fragmentary longitudinal cross-section which shows the door through-hole 23 of the center plate 9 in 2nd Embodiment of this invention.

Explanation of symbols

1 ... Left and right independent temperature control unit 2 ... Air conditioning case 9 ... Center plate (partition plate)
22 ... Warm air bypass door (shaft rotating door)
22a ... Rotating shaft 22c ... Door substrate portion 22d ... Door substrate portion 23 ... Door through hole 23a ... Shaft penetration portion 23b ... Locking convex portion (locking portion)
24 ... Lid member 24a ... Locking recess (locking portion)
H ... Hinge

Claims (4)

A partition plate (9) for partitioning the air conditioning case (2) into a plurality of air passages;
A pivoting door (22) that pivots in the plurality of air passages to change the flow of air flowing therethrough,
The partition plate (9) is provided with a door through hole (23) through which the shaft rotating door (22) is inserted in the direction of the rotating shaft (22a), and the air conditioning case is formed using the door through hole (23). (2) In the vehicle air conditioner having a structure in which the shaft turning door (22) is assembled in,
A lid member (24) is provided for closing the through hole portion of the door through hole (23) other than the shaft through portion (23a) through which the rotation shaft (22a) passes after the shaft rotation door (22) is inserted. An air conditioner for a vehicle.   The vehicle according to claim 1, wherein the lid member (24) is formed integrally with the partition plate (9) on one end side of the door through hole (23) via a hinge portion (H). Air conditioner.   In order to maintain the posture of the lid member (24) after closing the door through hole (23), a locking portion (23b, 24a) is provided between the door through hole (23) and the lid member (24). The vehicle air conditioner according to claim 1 or 2, characterized in that In the so-called left and right independent temperature control unit (1) for adjusting the temperature by dividing the air passage for the right seat air and the air passage for the left seat air,
The shaft rotation door (22) is a door for rotating the door substrate portion (22c, 22d) disposed in each of the air passages by one rotation shaft (22a). The vehicle air conditioner according to any one of claims 1 to 3.

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