JP2007276705A - Air conditioner for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the take-out work and inserting work of a heater core. <P>SOLUTION: This air conditioner for an automobile is constituted by arranging an air conditioning unit 10 in the cabin and projecting the other end sides 14b, 15b of cabin side pipe lines 14, 15 to which the one end side of the heater core in the air conditioning unit 10 is connected to the side of an engine room 1 from a pipe line supporting hole 21 of a vehicle body panel 3. In this case, a holding part 20 through which the pipe line supporting hole 21 passes is provided in the air conditioning case 11, the other end sides 14b, 15b of the cabin side pipe lines 14, 15 are inserted into the pipe line supporting hole 21 and grommets 22 are installed at points of the cabin pipe lines 14, 15 projected from the pipe line supporting hole 21. A pipe line hole 17 is blocked by these grommets 22, and the pipe line supporting hole 21 is set in a hole shape so that other end sides of the cabin side pipe lines 14, 15 can follow and converse to first conversion to remove the one-end sides of the cabin side pipe lines 14, 15 from the heater core and to second conversion to move the one end sides of the cabin side pipe lines 14, 15 to a position to be out of an area of a heater core storage port after the first conversion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air conditioner for an automobile in which an air conditioning unit is disposed in a vehicle compartment and a pipe connected to a heat exchanger in the air conditioning unit is led to an engine room side.

  A conventional automobile air conditioner of this type is disclosed in Patent Document 1. As shown in FIG. 14, the automotive air conditioner includes an air conditioning unit 100 disposed in a vehicle compartment below the instrument panel. The air conditioning unit 100 incorporates a heater core (not shown) that is a heat exchanger, and this heater core is accommodated from a heater core accommodation port (not shown) of the air conditioning case 101. Two compartment side pipes 102 and 103 for supplying and discharging engine cooling water to and from the heater core are arranged outside the air conditioning case 101. One end of each of the cabin side pipes 102 and 103 is led into the air conditioning case 101 from the heater core accommodation port, and is connected to the heater core by brazing. The other end sides 102 b and 103 b of the cabin side pipes 102 and 103 are supported by the pipe bracket 104.

  As shown in detail in FIG. 15, the piping bracket 104 includes a fixed bracket portion 104a fixed to the air conditioning case 101 and a detachable bracket portion 104b attached to the fixed bracket portion 104a. The brackets 104a and 104b are fixed by sandwiching the other end sides 102b and 103b of the compartment side pipes 102 and 103 with both bracket portions 104a and 104b. The other end sides 102b and 103b of the compartment side pipes 102 and 103 projecting from the pipe bracket 104 are projected to the engine room side from a piping hole (not shown) of a vehicle body panel that partitions the compartment and the engine room. . The piping hole is sealed by the piping bracket 104.

  Further, a cover member 105 is attached to the outer surface of the air conditioning case 101 so as to cover the two passenger compartment side pipes 102 and 103 over a partial range. The cover member 105 also closes the heater core accommodation port (not shown).

In the above configuration, an operation procedure for taking out the heater core from the air conditioning case 101 is performed. First, the air conditioning unit 100 itself fixed in the passenger compartment is removed. As a result, the other end sides of the two cabin side pipes 102 and 103 protruding into the engine room can move without being obstructed by the vehicle body panel. Next, the cover member 105 is removed from the air conditioning case 101. This exposes the heater core accommodation opening. Next, the detachable bracket portion 104b is detached from the fixed bracket portion 104a. Thus, the two passenger compartment side pipes 102 and 103 can be freely moved with respect to the air conditioning case 101. Finally, the heater core in the air conditioning case 101 is pulled out from the heater core accommodation port.
JP 2003-136937 A

  However, in the conventional automobile air conditioner, in order to take out the heater core from the air conditioning case 101, it is necessary to remove the air conditioning unit 100 from the fixed position in the vehicle interior, which is very troublesome. Therefore, there is a problem that the repair and replacement of the heater core is troublesome.

  Then, an object of this invention is to provide the air conditioning apparatus for motor vehicles which can perform the taking-out operation | work of a heat exchanger, and insertion operation | work easily with respect to the air-conditioning unit fixed in the vehicle interior.

  According to a first aspect of the invention for achieving the above object, an air-conditioning unit in which an engine room and a vehicle compartment are partitioned by a vehicle body panel and a heat exchanger is accommodated in an air-conditioning case is disposed in the vehicle compartment, and the inside is a heat medium. One end side of the passenger compartment side pipe through which the air flows is introduced into the air conditioning case and connected to the heat exchanger by a detachable joint, and the other end side of the passenger compartment side pipe is a pipe of the vehicle body panel. An air conditioner for an automobile that protrudes from a hole to the engine room side, wherein the air conditioning case is provided with a holding portion through which a pipe support hole passes, and the other end side of the passenger compartment side pipe is the pipe support hole A grommet is attached to a portion of the passenger compartment side pipe that protrudes from the pipe support hole, the grommet closes between the pipe hole and the passenger compartment side pipe, and the pipe support hole One end of the room side piping is The first transition to be removed from the exchanger, and after the first transition, the other end of the casing side pipe is moved to the second transition that moves one end side of the casing side pipe to a position outside the range of the exchanger accommodating port. It is characterized in that the side is set to a hole shape that can follow and change.

  Invention of Claim 2 is the air conditioner for motor vehicles of Claim 1, Comprising: The said piping support hole is connected to this piping fixing hole, and the piping fixing hole which hold | maintains the said housing side piping, The said piping fixing hole, It is characterized by comprising a desorption work hole that moves in the first and second transitions of the passenger compartment side piping.

  Invention of Claim 3 is the air conditioner for motor vehicles of Claim 2, Comprising: As for the said joint part, either one of the said pipe connection part and the one end side of the said vehicle compartment side piping is in the said joint part. It is connected in a state of being inserted into the other along the axial direction of the passenger compartment side piping.

  Invention of Claim 4 is the air conditioner for motor vehicles of Claim 2 or Claim 3, Comprising: It is arrange | positioned at the said air-conditioning case, The state by which the one end side of the said compartment side piping was connected to the said piping connection part Thus, there is provided a restricting means for locking the passenger compartment side pipe that moves in the direction of the first transition.

  A fifth aspect of the present invention is the automotive air conditioner according to any one of the first to fourth aspects, wherein the grommet is compressed and held between a peripheral edge portion of the piping hole and the holding portion. It is characterized by that.

  According to a sixth aspect of the present invention, the air conditioning case is formed with a holding portion that is located on the vehicle front side and through which a pipe support hole passes, and an exchanger accommodating port that is open on a side surface in the vehicle width direction. A heat exchanger is detachably accommodated in the air conditioning case through the accommodating port, and the passenger compartment side pipe through which the heat medium flows is configured to be detachable by introducing one end side into the air conditioning case. Connected to a pipe connecting part provided in the heat exchanger by a joint part, the other end side is inserted into the pipe support hole, and an intermediate part is arranged on a side surface where the exchanger accommodating port of the air conditioning case is opened. It is fixed to the air conditioning case by a restricting means.

  A seventh aspect of the present invention is the automotive air conditioner according to the sixth aspect, wherein the air conditioning case has a holding portion through which the pipe support hole passes, and a portion of the vehicle compartment side pipe that protrudes from the pipe support hole. And a grommet for closing the space between the piping hole and the passenger compartment side piping, and the grommet is compressed and held between a peripheral portion of the piping hole and the holding portion.

  According to the first aspect of the present invention, when the passenger compartment side pipe is moved in the first transition direction, one end of the passenger compartment side pipe is removed from the connection portion of the heat exchanger, and then the passenger compartment side pipe is moved to the second transition portion. When moving in the direction, one end side of the passenger compartment side pipe is positioned outside the range of the exchanger accommodating port, and when the first and second transitions of such a passenger compartment side pipe are performed, the other end side of the passenger compartment side pipe has a grommet. In order to move the position in the pipe support hole by elastic deformation and allow the first and second transitions, one end side of the cabin side pipe is removed from the heat exchanger, and the heat exchanger is taken from the air conditioning case. Can be moved to a position where it can be taken out. Therefore, only the heat exchanger can be taken out from the air conditioning case without removing the air conditioning unit itself from the fixed position in the vehicle interior. Then, when a repaired or new heat exchanger is inserted into the air conditioning case and one end side of the cabin side piping is returned to the connection position of the heat exchanger, the other side of the cabin side piping is restored by elastic return deformation of the grommet. Since the end side automatically returns to the original position of the pipe support hole, there is no need to perform any work on the other end side of the cabin side pipe. As described above, the heat exchanger can be easily taken out and inserted into the air conditioning unit fixed in the passenger compartment.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the casing side pipe is normally held in position by the pipe fixing hole, so that the casing side pipe can be reliably held.

  According to the invention of claim 3, in addition to the effect of the invention of claim 2, it is possible to ensure sufficient hermeticity without complicating the structure of the joint portion, and to prevent leakage of the heat medium flowing inside.

  According to the invention of claim 4, in addition to the effects of the inventions of claims 2 and 3, it is possible to prevent the heat exchanger and the cabin side piping from falling off without complicating the configuration.

  According to the invention of claim 5, in addition to the effects of the inventions of claims 1 to 4, the grommet is compressed and held so that the engine room and the vehicle compartment can be partitioned while maintaining sufficient airtightness. .

  According to the invention of claim 6, with respect to the air conditioning unit, one end side of the cabin side pipe is fixed to the heat exchanger by a detachable joint portion, and the other end side is inserted into the pipe support hole, Since the intermediate portion is fixed to the air conditioning case by the regulating means, the heat exchanger can be easily taken out and inserted into the air conditioning unit fixed in the passenger compartment.

  According to the invention of claim 7, in addition to the effect of the invention of claim 5, the grommet is compressed and held, so that the engine room and the vehicle compartment can be partitioned while maintaining sufficient airtightness.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 9 show an embodiment of the present invention. FIG. 1 (a) is a front view of an air conditioning unit, FIG. 1 (b) is a side view of the air conditioning unit, and FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 4 is a front view of the main part of the holding portion, and FIG. 5 (a) is one end of the passenger compartment side piping. The front view of the air-conditioning unit which shows the state which removed the side from the piping connection part of the heater core, FIG.5 (b) is the side view of the air-conditioning unit which shows the state which removed the one end side of the compartment side piping from the piping connection part of the heater core, FIG. 6A is a front view of the air conditioning unit showing a state in which one end side of the passenger compartment side pipe is moved to a position outside the range of the heater core accommodation port, and FIG. FIG. 7 is a side view of the air-conditioning unit showing a state where the air-conditioning unit has moved to a position that is outside the range of the storage port. FIG. 8 is an enlarged view of a portion C2 in FIG. 5A, FIG. 9 is an enlarged view of a portion C3 in FIG. 6A, FIG. 10 is a perspective view showing a connection fitting, and FIG. FIG. 12 is an upper cross-sectional view of the joint portion showing a state in which the pipe is pulled out from the pipe connection portion, and FIG. 13A is a state in which the connection bracket is removed. (B) is a side view of the joint part which shows a mode that the connection metal fitting was assembled.

  As shown in FIGS. 1A and 1B, the engine room 1 and the vehicle compartment 2 are partitioned by a vehicle body panel 3. An instrument panel (not shown) is disposed in the front part of the passenger compartment 2, and an air conditioning unit 10 of an automobile air conditioner is fixed below the instrument panel.

  The air conditioning unit 10 includes an air conditioning case 11, a heater core 12 that is a heat exchanger for heating housed in the air conditioning case 11, an evaporator (not shown) that is a heat exchanger for cooling, and the like. The conditioned air is created, and the created conditioned air is distributed to a desired outlet.

  The heater core 12 is accommodated inside from a heater core accommodation port 13 which is a heat exchanger accommodation port of the air conditioning case 11. The heater core 12 uses cooling water of an engine (not shown) as a heat medium, and two passenger compartment side pipes 14 and 15 for supplying and discharging the heat medium are arranged along the outer surface of the air conditioning case 11. . The two passenger compartment side pipes 14 and 15 are fixed to the air conditioning case 11 by an intermediate support bracket 16 as a restricting means at substantially the center thereof.

  The intermediate support bracket 16 is in a state in which one end side 14a, 15a of the two compartment side pipes 14, 15 is connected to the pipe connection portion 12a, and the compartment side pipe to be moved in the direction of the first transition described later. It arrange | positions at the side surface of the air-conditioning case 11 which the exchanger accommodating port 13 opens so that it may latch on the intermediate part of 14 and 15. FIG. As a result, movement and dropout of the heater core 12 and the passenger compartment side pipes 14 and 15 in the first transition direction are restricted.

  One end sides 14a and 15a of the two passenger compartment side pipes 14 and 15 are led into the air conditioning case 11 from the heater core accommodation port 13 and are connected to the pipe connection portion 12a of the heater core 12 (see FIGS. 6A and 6B). Are connected by a joint portion 23 detachably configured.

  As shown in FIGS. 11 and 12, the joint portion 23 has one end side 14a, 15a of the passenger compartment side piping 14, 15 in the pipe connecting portion 12a in the axial direction of the passenger compartment side piping 14, 15 in the joint portion 23. It is inserted along the O-ring 26 and is connected by the connection fitting 30.

  A pipe side flange 24 is formed on one end side 14a, 15a of the cabin side pipes 14, 15, and further has a stepped shape that becomes narrower toward the tip, and an O-ring 26 is formed on the stepped part. Has been placed.

  The pipe connecting portion 12a of the heater core 12 is disposed in the tank portion 12b so as to protrude from the air conditioning case 11. The pipe connecting portion 12a has a stepped shape that expands from the base toward the opening end, and a connecting portion side flange 25 is formed at the opening end. Further, as shown in FIGS. 13A and 13B, an engagement groove 25 a and a detent 25 b that engage with the connection fitting 30 are formed in the connection-side flange 25.

  As shown in FIG. 10, the connection fitting 30 is arranged in a state in which the side pieces 32 are bent on both sides of the connecting piece 31 made of a rectangular piece located below the front face and the side pieces 32 face each other. ing. The connecting piece 31 and the pair of side pieces 32, 32 are connected by the end portions of the side pieces 32, 32. Each side piece 32 is formed with a slot-like fitting hole 33 and an arcuate support portion 35 disposed on a surface orthogonal to the side piece 32 via a foot piece 34. That is, by bending the foot pieces 34 so as to be orthogonal to the side pieces 32, the side surface 36 portions of the arc-shaped support portions 35 are arranged to face each other. Therefore, each support part 35 and the connecting piece 31 are both bent so as to be orthogonal to the side piece 32 and arranged on the same plane. Further, the connecting piece 31 engages with the rotation stopper 25b of the pipe side connecting portion 12a in a state where the connecting fitting 30 is assembled to the joint portion 23, and prevents the connecting fitting 30 from being accidentally dropped off. Yes.

  Each support portion 35 has a side surface 36 connected to one end side 14a, 15a of the passenger compartment side piping 14, 15 when connecting the pipe connecting portion 12a of the joint portion 23 to the one end side 14a, 15a of the passenger compartment side piping 14, 15. One end side 14a, 15a of the cabin side piping 14, 15 is sandwiched in the radial direction in contact with a part of the outer peripheral surface. Moreover, the fitting hole 33 of each side piece 32 is formed so that it can be fitted in the state in which the connecting portion side flange 25 and the pipe side flange 24 are abutted.

  A support portion 37 that is formed by pressing so as to be convex outward and curved in an arc shape is provided at the center portion of each side piece 32 along the formation position of the fitting hole 33. The support part 37 is formed so as to be in contact with a part of the peripheral surface of the pipe connection part 12a and to sandwich the pipe connection part 12a in the radial direction at the time of pipe connection. Moreover, the front-end | tip part 38 of each side piece 32 makes it easy to receive both the flanges 24 and 25 bent and faced so that it might open outside. Further, a step-shaped guide portion 39 is formed at a position on the side of the fitting hole 33 in the distal end portion 38 and the side piece 32 continuous thereto, so as to be convex outward. A substantially triangular cutout 40 is formed on one side of each fitting hole 33 on the front end side in the pressing direction.

  The guide portion 39 is for guiding the flanges 24 and 25 abutted against the notch 40. Further, an engagement groove 25 a is provided on the outer peripheral edge of the connection portion side flange 25. And the engagement groove | channel 25a engages with the front end side edge parts 42 and 42 of the fitting holes 33 and 33, and it prevents that the connection metal fitting 30 falls off after completion of mounting | wearing.

  The other end sides 14b and 15b of the two passenger compartment side pipes 14 and 15 protrude from the pipe hole 17 (shown in FIG. 3) of the vehicle body panel 3 to the engine room side. Engine room side pipes 18 and 19 (shown in FIG. 3) are connected to ends of the passenger compartment side pipes 14 and 15 protruding to the engine room side. The engine cooling water is supplied to the vehicle compartment side via the engine room side pipes 18 and 19 and discharged from the vehicle compartment side.

  Further, at the other end side 14b, 15b of each of the compartment side pipes 14, 15 and at the compartment side before entering the piping hole 17 of the vehicle body panel 3, the two compartment side pipes 14, 15 are pipes. Supported by a support structure. Hereinafter, this piping support structure will be described.

  As shown in FIGS. 2 and 3, the air conditioning case 11 is integrally provided with a grommet holding portion 20 having an elliptical holding surface 20 a as a holding portion. The grommet holding part 20 has two pipe support holes 21 penetrating the holding surface 20a. The hole shape of the pipe support hole 21 will be described in detail below. The other end sides 14 b and 15 b of the two passenger compartment side pipes 14 and 15 are inserted into the two pipe support holes 21. Grommets 22 are attached to the cabin side pipes 14 and 15 protruding from the pipe support holes 21. The grommet 22 is mounted by press-fitting the vehicle compartment side pipes 14 and 15 into the holes. The grommet 22 is compressed and held on the vehicle body panel 3 by the grommet holding part 20, and the piping holes 17 into which the vehicle compartment side pipes 14 and 15 are inserted are closed by the grommet 22.

  Next, the hole shape of each pipe support hole 21 will be described. As shown in detail in FIG. 4, each pipe support hole 21 has a first transition for removing one end side 14 a, 15 a of the cabin side pipes 14, 15 from the pipe connection portion 12 a of the heater core 12, and after this first transition, It is set to a hole shape that allows the other end side of the passenger compartment side pipes 14 and 15 to follow and change to a second transition that moves the one end sides 14a and 15a of the compartment side pipes 14 and 15 to a position outside the range of the heater core housing port 13. Yes. Specifically, each pipe support hole 21 communicates with the pipe fixing hole 21a for holding the position of the passenger compartment side pipes 14 and 15 and the pipe fixing hole 21a. It is composed of a desorption work hole 21b that moves in two transitions.

  Next, the removal / insertion work of the heater core 12 will be described. First, in the air conditioning unit 10 of FIGS. 1A and 1B, the intermediate support bracket 16 is removed from the air conditioning case 11. Further, when the engine room side pipes 18 and 19 are formed of an inflexible material, the connection between the other end of the vehicle compartment side pipes 14 and 15 and the engine room side pipes 18 and 19 is disconnected.

  Next, the front end portion 38 of the connection fitting 30 is widened, and the connection fitting 30 is removed (see FIGS. 11, 13A and 13B). Then, the vehicle compartment side pipes 14 and 15 are moved (first transition) in the direction of arrow a in FIG. 1A, and one end sides 14 a and 15 a of the compartment side pipes 14 and 15 are connected to the heater core 12 by the first transition. It removes from the pipe connection part 12a (refer FIG. 12). Here, the other end sides 14b and 15b of the cabin side pipes 14 and 15 are separated from the positions of the pipe fixing holes 21a of the pipe support holes 21 by the elastic deformation of the grommets 22 (positions in FIG. 7). It moves to the position (position of FIG. 8), and the 1st transition of the compartment side piping 14 and 15 is permitted by this. By the first transition, the two passenger compartment side pipes 14 and 15 are in the state shown in FIGS.

  Next, the vehicle interior side pipes 14 and 15 are respectively rotated (second transition) in the directions of arrows b and c in FIGS. 5A and 5B around the respective shaft cores O1 and O2, respectively. Due to the change, the one end sides 14a, 15a of the passenger compartment side pipes 14, 15 are moved to a position outside the range of the heater core accommodation port 13. Here, the other end sides 14b and 15b of the cabin side pipes 14 and 15 are displaced in the attachment / detachment hole 21b of the pipe support hole 21 by the elastic deformation of the grommet 22 (position in FIG. 9), thereby the cabin. The second transition of the side pipes 14, 15 is allowed. By the second transition, the two passenger compartment side pipes 14 and 15 are brought into a state shown in FIGS.

  As described above, only the heater core 12 can be taken out from the air conditioning case 11 using the heater core housing port 13 without removing the air conditioning unit 10 itself from the fixed position in the passenger compartment 2. Then, the repaired heater core 12 or a new heater core is inserted from the heater core accommodation port 13 of the air conditioning case 11. Thereafter, the one end sides 14a, 15a of the cabin side pipes 14, 15 are returned to the connection position of the heater core 12 in the reverse procedure. Then, because the elastic return deformation of the grommet 22 causes the other end sides 14b and 15b of the cabin side pipes 14 and 15 to automatically return to the position of the original pipe fixing hole 21a of the pipe support hole 21, the operator There is no need to perform any work on the other end side of the pipes 14 and 15. From the above, the heater core 12 can be easily taken out and inserted into the air conditioning unit 10 fixed in the passenger compartment.

  Complicating the structure of the joint part 23 by connecting the pipe connection part 12a and either one of the one end sides 14a, 15a of the passenger compartment side pipes 14, 15 in a state of being inserted into the other joint part 23. Therefore, sufficient sealing property can be secured, and leakage of the heat medium circulating inside can be prevented.

  By including the intermediate support bracket 16 that locks the intermediate portion of the cabin side pipes 14 and 15 that move in the direction of the first transition while being mounted on the vehicle, the heat exchanger is not complicated. Further, it is possible to prevent the casing side piping from dropping off.

  Since the grommet is compressed and held, the engine room and the vehicle compartment can be partitioned while maintaining sufficient airtightness.

  In this embodiment, the pipe support hole 21 communicates with the pipe fixing hole 21a for holding the position of the passenger compartment side pipes 14 and 15 and the first and second of the passenger compartment side pipes 14 and 15. Since it is comprised from the desorption work hole 21b which moves by a transition, since the vehicle interior side piping 14 and 15 is normally hold | maintained by the piping fixing hole 21a, the vehicle interior side piping 14 and 15 can be hold | maintained reliably.

  In this embodiment, the case where the heat exchanger is the heater core 12 has been described. However, it goes without saying that the present invention can be similarly applied to the case where the heat exchanger is an evaporator.

  Further, if the grommet 22 is bonded and held to the peripheral edge portion of the grommet holding portion 20, the assembly workability is improved, which is even better.

1 shows an embodiment of the present invention, (a) is a front view of an air conditioning unit, (b) is a side view of the air conditioning unit. FIG. 3 is a front view of a pipe support structure on the other end side of the cabin side pipe as viewed from the vehicle body panel side, showing an embodiment of the present invention. FIG. 3 shows an embodiment of the present invention and is a cross-sectional view taken along line AA in FIG. 2. FIG. 2 is a front view of the main part of the holding unit according to the embodiment of the present invention. 1 shows an embodiment of the present invention, (a) is a front view of an air conditioning unit showing a state in which one end side of a passenger compartment side pipe is removed from a pipe connecting portion of a heater core, and (b) shows one end side of the passenger compartment side pipe. It is a side view of the air-conditioning unit which shows the state removed from the piping connection part of the heater core. 1 shows an embodiment of the present invention, in which (a) is a front view of an air conditioning unit showing a state in which one end side of a passenger compartment side pipe is moved to a position outside the range of the heater core accommodation port, and (b) is a passenger compartment side pipe. It is a side view of the air-conditioning unit which shows the state which moved one end side of this to the position which becomes outside the range of a heater core accommodation port. FIG. 2 shows an embodiment of the present invention and is an enlarged view of a portion C1 in FIG. FIG. 6 shows an embodiment of the present invention and is an enlarged view of a portion C2 in FIG. FIG. 7 shows an embodiment of the present invention and is an enlarged view of a portion C3 in FIG. It is a perspective view which shows one Embodiment of this invention and shows a connection metal fitting. It is upper part sectional drawing of the joint part which shows one Embodiment of this invention and shows a mode that the connection metal fitting was removed. It is upper part sectional drawing of the joint part which shows one Embodiment of this invention and shows the state which pulled out the piping from the piping connection part. 1A and 1B are side views of a joint portion showing an embodiment of the present invention, wherein FIG. 4A shows a state where a connection fitting is removed, and FIG. It is a perspective view of the air conditioning unit of a prior art example. It is a figure which shows a prior art example and shows the support structure of the other end side of vehicle interior side piping.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine room 2 Car compartment 3 Body panel 10 Air conditioning unit 11 Air conditioning case 12 Heater core (heat exchanger)
12a Pipe connection part 13 Heater core accommodation port (heat exchanger accommodation port)
DESCRIPTION OF SYMBOLS 14 Cabin side piping 14a One end side of compartment side piping 14b Other end side of compartment side piping 15 Cabin side piping 15a One end side of compartment side piping 15b Other end side of compartment side piping 16 Control means 17 Piping hole 20 Holding part 21 Piping support hole 21a Piping fixing hole 21b Desorption work hole 22 Grommet 23 Joint part

Claims (7)

The engine compartment (1) and the compartment (2) are partitioned by the vehicle body panel (3),
The air conditioning unit (10) in which the heat exchanger (12) is accommodated in the air conditioning case (11) through the exchanger accommodating port (13) provided in the air conditioning case (11) is disposed in the vehicle compartment (2). And
One end side (14a, 15a) of the passenger compartment side pipe (14, 15) through which the heat medium circulates is introduced into the air conditioning case (11) and is detachably connected by a joint part (23). Connected to the pipe connection (12a) provided in the heat exchanger (12),
The other end side (14b, 15b) of the passenger compartment side pipe (14, 15) is projected from the pipe hole (17) of the vehicle body panel (3) to the engine room (1) side. Because
The air conditioning case (11) is provided with a holding portion (20) through which a pipe support hole (21) passes, and the other end side (14b, 15b) of the passenger compartment side pipe (14, 15) is the pipe support. Inserted into the hole (21),
A grommet (22) is attached to a portion of the passenger compartment side pipe (14, 15) protruding from the pipe support hole (21),
The grommet (22) blocks between the pipe hole (17) and the passenger compartment side pipe (14, 15),
The pipe support hole (21) includes a first transition for removing one end side (14a, 15a) of the passenger compartment side pipe (14, 15) from the pipe connection portion (12a), and after the first transition, In addition to the cabin side piping (14, 15), the second transition moves one end side (14a, 15a) of the chamber side piping (14, 15) to a position outside the range of the exchanger accommodating port (13). An air conditioner for an automobile characterized in that the end side (14b, 15b) is set in a hole shape that can follow and change. An air conditioner for an automobile according to claim 1,
The pipe support hole (21) communicates with the pipe fixing hole (21a) for holding the casing side pipe (14, 15) and the pipe fixing hole (21a). 15) A vehicle air conditioner comprising the desorption work hole (21b) that moves in the first and second transitions of 15). An automobile air conditioner according to claim 2,
In the joint portion 23, either the pipe connection portion (12 a) or one end side (14 a, 15 a) of the compartment side pipe (14, 15) is connected to the compartment side pipe ( 14. An air conditioner for an automobile, which is connected in a state of being inserted into the other along the axial direction of 14, 15). An automobile air conditioner according to claim 2 or claim 3,
It is arranged in the air conditioning case (11), and in the state where one end side (14a, 15a) of the passenger compartment side pipe (14, 15) is connected to the pipe connection portion (12a), in the direction of the first transition. An automotive air conditioner comprising a regulating means (16) for locking the moving cabin side pipe (14, 15). An automobile air conditioner according to any one of claims 1 to 4,
An automotive air conditioner wherein the grommet (22) is compressed and held between a peripheral edge of the piping hole (17) and the holding portion (20). The air-conditioning case (11) is formed with a holding portion (20) that is located on the vehicle front side and through which the pipe support hole (21) passes, and an exchanger accommodating port (13) that is opened on the side surface in the vehicle width direction. And
A heat exchanger (12) is detachably accommodated in the air conditioning case (11) through the exchanger accommodating port (13),
Cabin side piping (14, 15) through which the heat medium flows
One end side (14a, 15a) is introduced into the air conditioning case (11) and connected to a pipe connection part (12a) provided in the heat exchanger (12) by a joint part 23 configured to be detachable. Connected,
The other end side (14b, 15b) is inserted into the pipe support hole (21),
An automobile having an intermediate portion fixed to the air conditioning case (11) by a restricting means (16) disposed on a side surface of the air conditioning case (11) where the exchanger accommodating port (13) opens. Air conditioner. An automobile air conditioner according to claim 6,
A holding portion (20) through which the pipe support hole (21) passes through the air conditioning case (11);
A grommet (22) for closing the space between the pipe hole (17) and the vehicle compartment side pipe (14, 15) at a position of the vehicle compartment side pipe (14, 15) protruding from the pipe support hole (21); With
An automotive air conditioner wherein the grommet (22) is compressed and held between a peripheral edge of the piping hole (17) and the holding portion (20).

Images