JPH04197823A - Piping structure of air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To prevent a vehicle-room side joint member connected to an evaporator from interfering with the through hole of a dash panel so as to enhance workability in attaching and removing the evaporator by fixing the vehicle-room side joint member to the vehicle-room side portion of a block joint passed through the through hole of the dash panel. CONSTITUTION:An evaporator 12 disposed inside a vehicle air-conditioner 10 is connected to each suction liquid tube 14, 16 by a block joint 60. In this case, vehicle-room side flanges 28, 30 are connected to the respective end portions of interior piping 20, 22 for the air-conditioner. Engine-room side flanges 66, 68 are connected to the respective end portions of the tubes 14, 16. After the block joint 60 is passed through the through hole 46 of a dash panel 34 a sealing plate 52 is inserted into each stud bolt 48, 50 and a seal is formed by junction of a grommet 58 and seal rubber 61. Thereafter, a nut 54 is threadably engaged with each stud bolt 48, 50 and the tubes 14, 16 are fixed to the respective portions of the block joint 60 by a bolt 70.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a piping structure for a vehicle air conditioner installed in a vehicle such as an automobile.

[Conventional technology]

Conventionally, vehicle air conditioning systems installed in vehicles such as automobiles are
As shown in FIG. 4, the vehicle air conditioner 85 was of a horizontal split type in which a heater unit 80, a cooler unit 82, and a blower 84 could be separated. Therefore, when retrofitting the cooler or replacing the evaporator 83 in the cooler unit 82, move the cooler unit 82 in the longitudinal direction of the vehicle body (in the six directions of arrows in FIG. 4).
It has a removable structure. In addition, the pipes 33A and 83B coming out of the evaporator 83 pass through a through hole 86 drilled in the dash panel and protrude toward the engine room. 88 and 89, and are connected by nuts 90, respectively.

However, recently, in place of this horizontal split type vehicle air conditioner, an integrated heater unit, cooler unit, and blower are integrated, which is smaller, lighter, and less noisy than the horizontal split type vehicle air conditioner. Vehicle air conditioners are increasingly being used. As shown in FIG. 5, in this integrated vehicle air conditioner 92, when replacing the evaporator 94, the evaporator 94 is moved in the vehicle width direction (direction of arrow B in FIG. 5) and removed. It's like that.

Therefore, as shown in FIG. 5, in a structure in which the pipes 94A and 94B coming out of the evaporator 94 pass through the through hole 96 drilled in the dash panel, the pipes 94A and 94B
interferes with the through hole 96, making it complicated to attach and detach the second porter 94, resulting in poor service workability.

[Problem to be solved by the invention]

In consideration of the above facts, the present invention provides a vehicle air conditioner that can improve the ease of assembly on the line of an integrated vehicle air conditioner, the workability of attaching and removing the evaporator when replacing it, and the workability of retrofitting the cooler. The purpose is to provide a piping structure.

[Means to solve the problem]

The present invention provides an evaporator for a vehicle air conditioner in which a heater unit, a cooler unit, and a blower are integrated, which is disposed on the vehicle interior side of a dash panel, and a sales pipe disposed on the engine room side of the dash panel. A piping structure of a vehicle air conditioner connected through a through hole, comprising: a block joint disposed through the through hole in the da.7 pass panel; The present invention is characterized in that it includes a fixed passenger compartment side joint member, and an engine room side joint member connected to the piping and defined on the engine room side of the block joint.

[Effect]

In the present invention having the above configuration, the vehicle interior joint member is connected to the evaporator of the integrated vehicle air conditioner disposed on the vehicle interior side of the dash panel, and the vehicle interior joint member is
It is fixed by bolts, for example, to the side of the vehicle interior of the block joint that passes through the dash panel through hole. Therefore, when this bolt is removed and the evaporator is moved across the width of the vehicle, the passenger compartment side joint member connected to the evaporator does not interfere with the dash panel through hole. This evaporator can be easily attached and detached from the vehicle air conditioner,
The workability of attaching and detaching the evaporator can be improved.

Further, an engine room side joint member connected to piping in the engine room is fixed to the engine room side of the block joint with, for example, bolts. Therefore, the piping in the engine room can be easily connected to the evaporator via the block joint, and assembly workability on the line can be improved.

〔Example〕

An embodiment of the piping structure of a vehicle air conditioner according to the present invention will be described with reference to FIGS. 1 to 3.

In the figure, arrow UP indicates the upper side of the vehicle, arrow FR indicates the front of the vehicle, and arrow IN indicates inward in the vehicle width direction.

As shown in FIG. 3, the vehicle air conditioner 3410 of this embodiment
is an integrated vehicle air conditioner that includes a heater unit, a cooler unit, and a blower. In addition, an evaporator 12 disposed within the vehicle air conditioner 10
The block joint 60, which will be described later, connects the Zakujon liquid tube as piping located on the engine room side. 16.

Next, the piping structure of the vehicle air conditioner according to the present invention will be explained in detail.

As shown in FIG. 2, the ends of the pipes 12A and 12B connected to the evaporator 12 are connected to an oblong connecting member 18.
is connected to. This connecting member 18 has a screw hole 18
A and 18B are bored in the thickness direction of the connecting member 18. The connecting member 18 also includes an air conditioner indoor pipe 20.
An oval-shaped connecting member 24 connected to one end of 22
are in contact with each other, and the air conditioner indoor piping 20.22 and the piping 12A, 12B are connected to each other. This connecting member 24 has through holes 24A and 24B coaxially bored with the screw holes 18A and 18B of the connecting member 18, and bolts 26 are inserted into these through holes 24A and 24B, respectively. There is. These bolts 26 are screwed into screw holes 18A and 18B of the connecting member 18, thereby fixing the connecting member 18 and the connecting member 24.

At the other ends of the air conditioner indoor piping 20.22, there are cabin side flanges 28.
30 are connected. These passenger compartment side flanges 28.
30, through holes 28A and 30A are formed in the thickness direction of the passenger compartment side flange 28 and 30, respectively, and bolts 32 are inserted into these through holes 28A and 30A from the inside of the passenger compartment (rear of the vehicle body), respectively. It has been inserted.

As shown in FIG. 1, the dash panel 34
It is composed of an insulator paddle 38 that forms the side, and a dash plate 42 that forms the engine room 40 side. Dash insulator panel 38
An inner silencer 44 is attached to the side surface of the vehicle compartment, and an outer silencer 45 is attached to the side surface of the engine compartment of the dash plate 42. Also,
The dash panel 34 includes a vehicle compartment 36 and an engine compartment 4.
A circular through hole 46 communicating with 0 is bored.

Stud bolts 48 and 50 are erected on the outer periphery of the through hole 46 of the dash panel 34 toward the engine room 40 side. A seal plate 52 is engaged with these stand bolts 48, 50 from the engine compartment 40 side. That is, the stud bolts 4 are inserted into the circular through holes 52A and 52B formed at the edge of the seal plate 52.
8.50 has been inserted. Also, stand bolt 48
．． A nut 54 is screwed into each of the bolts 50, thereby fixing the seal plate 52 to the dash panel 34.

The seal plate 52 has a two-layer structure including a compartment side side plate 52A and an engine side side plate 52B, and a circular through hole 56 is bored in the center of these. The outer peripheral portion of the through hole 56 bulges out toward the vehicle interior 36 in a substantially cylindrical shape and enters the through hole 46 of the dash panel 34 . In addition, in the vicinity of the through hole 56, the compartment-side side plate 52A and the engine-side side plate 52B face each other with an interval, and the compartment-side side plate
A cylindrical block joint 60 is fitted into each of the through holes 56 in the engine side plate 52A and the engine side plate 52B, with a grommet 58 interposed therebetween. A seal rubber 61 is wrapped around the outer circumference of the block joint 60, and the seal rubber 61 is joined to the grommet 58.

One end of the block joint 60 projects toward the passenger compartment 36, and the other end projects toward the engine compartment 40.

As shown in FIG. 2, the block joint 60 includes:
Large-diameter circular holes 60A and 60B are respectively bored in the thickness direction, and indoor air conditioner piping 20, 22 is connected to these circular holes 60A and 60B from the vehicle interior 36 side, respectively. Screw holes 60C and 60D are provided near the circular holes 60A and 60B of the block joint 60, respectively, and the through holes 28A and 30 of the passenger compartment side flange 28. The bolts 32 inserted into A are screwed together.

Therefore, these bolts 32 are connected to the block joint 60.
By removing it from the screw hole 60C160D, the air conditioner indoor piping 20.22 can be moved in the vehicle width direction.

On the engine room side of the block joint 60, there is a suction liquid tube installed on the engine room side. 16 are arranged.

For these suction liquid tubes. Engine room side flanges 66 and 68, each serving as an independent engine room side joint member, are connected to the end portions of the engine room side flanges 16, respectively. These engine room side flanges 66 and 68 have
Through-holes 66A and 68A are formed in the thickness direction of the through-holes 66A and 68A, respectively.
0 is inserted from the engine room side (front of the vehicle).

These bolts 70 are respectively screwed into screw holes 60C160D of the block joint 60 from the engine room side. Therefore, by removing these poles 70 from the screw holes 5QC and 60D of the block joint 60, the suction liquid tube can be attached. 16 can be removed to the engine room 41J.

Note that when the evaporator is not installed, the through hole 56 of the seal plate 52 is closed by a rubber sheet 72, and the seal plate 52 is a seal plate for air-conditionerless vehicles) 7L! : Fading.

Next, the operation of this embodiment will be explained.

The assembly work on the line of this embodiment with the above configuration is performed using a block joint 60. The air conditioner indoor piping 20, 22 and the piping 12A, 12B connected to the evaporator 12 are supplied to the line in an assembled state. Therefore, after passing the through hole 46 of the dash panel 34 through the lock joint 60, the seal plate 52 is attached to the stand bolt 48.
50, and a seal is formed by joining the grommet 58 and the seal rubber 61. After that, screw the nut 54 onto the stand bolt 48.50 from the engine room 40 side using an impact tool, and attach it to the suction liquid tube. 16 is fixed to the block joint 60 with a bolt 70. Therefore, block joint 6
0 and suction liquid tube. 16, the joint surface can be brought out to the engine room 40 side to a visible position, and at the time of line-off,
It becomes easy to check for refrigerant leakage from this joint surface.

Furthermore, when retrofitting an air conditioner, the rubber seal 72 of the seal plate 74 for an air conditioner-less vehicle that closes the through hole 46 of the dash panel 34 is removed from the passenger compartment 36 side. For suction liquid tube. The block joint 60 assembled in advance in the engine room 4
It is inserted into the through hole 56 of the seal plate 52 from the zero side, and a seal is formed by joining the grommet 58 and the seal rubber 61. Next, move the evaporator 12 to which the pipes 12A and 12B are connected to the outside in the vehicle width direction (in the direction of arrow S in FIG. 3).
and place the evaporative lake 12 inside the vehicle air conditioner 10.
Attach. Thereafter, the air conditioner indoor pipes 20 and 22 are connected to the pipes 12A and 12B by bolts 26 and to the block joint 60 by bolts 32. Thereby, the sealing quality under the same conditions as when assembled on the line is ensured by the bonding between the grommet 58 and the seal rubber 61. Therefore, the air conditioner can be retrofitted without any tool work from the engine compartment 40 side, and when the air conditioner is not installed, the seal plate 7 for the air conditionerless car
4 Gomshi)? 2 can prevent foreign matter from sticking to the grommet 58.

In addition, when removing the evaporator 12, remove the bolts 26 and connect the air conditioner indoor piping 20.22 to the piping 12A, 1.
2B, remove the bolt 32, and separate the air conditioner indoor piping 20.22 from the block joint 60.

Thereafter, the evaporator 12 is moved inward in the vehicle width direction (in the direction opposite to the arrow S direction in FIG. 3), and the vehicle air conditioner 10
Remove the evaporator 12 from the Therefore, the evaporator 12 can be easily removed.

In addition, in this embodiment, by using the block joint 60, the block joint 60 has a passenger compartment side flange 28.30 and an engine compartment side flange 66.6.
8, an air tool can be used and the tightening torque of the bolts 32.70 can be easily managed.

Further, by making the block joint 60 cylindrical, sealing with the grommet 58 is possible, and sealing quality is guaranteed. Further, since the angle of the block joint 60 can be changed without affecting the body, the degree of freedom in design is expanded. Furthermore, the body is easy to manufacture and costs can be reduced.

In this embodiment, the passenger compartment side flange 28.30 and the engine room side flange 66.68 are fixed to the block joint 60 with bolts 32.70, but instead of this, other fixing means such as screws may be used. The passenger compartment side flange 28.30 and the engine room side flange 66.68 may be fixed to the block joint 60 by.

〔Effect of the invention〕

Since the present invention has the above configuration, it has the excellent effect of improving the ease of assembly on the line of an integrated vehicle air conditioner, the workability of attaching and removing the evaporator when replacing it, and the workability of retrofitting the cooler. have

[Brief Description of the Drawings] Fig. 1 is a sectional view taken along the longitudinal direction of the vehicle body showing the piping structure of a vehicle air conditioner according to an embodiment of the present invention;
The figure is an exploded perspective view showing the piping structure of a vehicle air conditioner according to an embodiment of the present invention, and FIG. 3 is a vehicle air conditioner to which the piping structure of a vehicle air conditioner according to an embodiment of the present invention is applied. FIG. 4 is a perspective view showing the piping structure of a conventional split type vehicle air conditioner, and FIG. 5 is a perspective view showing the piping structure of a conventional integrated vehicle air conditioner. It is. 10...vehicle air conditioner, 12...evaporator, ni. 16...Suction liquid tube, 20.
22... Indoor piping for air conditioner, 28. 30... Compartment side flange, 32... Bolt, 34... Dash panel, 36... Vehicle interior, 40... Engine room, 46...・Through hole, 60...Block joint, 70...Bolt.

Claims (1)

[Claims] (1) The evaporator of the vehicle air conditioner, which is arranged on the passenger compartment side of the dartshi panel and is integrated with a heater unit, cooler unit, and blower, and the piping arranged on the engine compartment side of the dartshi panel are connected to the dartshi panel through-hole. A piping structure of a vehicle air conditioner connected through a block joint disposed through the dash panel through hole, and a vehicle interior connected to the evaporator and fixed to a vehicle interior side portion of the block joint. A piping structure for a vehicle air conditioner, comprising: a side joint member; and an engine room side joint member connected to the piping and fixed to the engine room side of the block joint.