JPS5930730Y2 - Connection between active units of vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle air conditioner, and particularly to the structure of a portion connecting active units such as a blower section, a cooling section, and a heating section.

In general, a vehicle is an assembly of parts, so there are variations in the dimensions of each part.

Therefore, active units such as a blower section, a cooling section, and a heating section of an air conditioner installed in a vehicle are designed such that the connecting tube sections face each other with a gap between them.

Conventionally, each active unit is connected using a coupling band that wraps around the opposing connection cylinders.

However, with this structure, if the shapes of the connecting tubes do not match, if the axes are misaligned, or if the distance between the connecting tubes becomes too wide, it will not be possible to secure a sufficient tightening margin for the band. As a result, the connection between each active unit may become disconnected due to vibration during driving.

Furthermore, since the band must be tightened using screws or the like, it is very difficult to work with.

Therefore, an object of the present invention is to easily and reliably connect active units such as a blowing section, a cooling section, and a heating section of a vehicle air conditioner.

According to the present invention, the first
and a vehicular air conditioner including a second unit, a cylindrical adapter having one axial end fitted to the outer periphery of the connecting cylindrical portion of the first unit; A first gasket affixed to either one of the distal end surfaces of the connecting cylindrical portion of the second unit and a fitting portion between the connecting cylindrical portion of the first unit and the adapter. a second gasket that maintains airtightness, the first gasket is compressed between the other axial end surface of the adapter and the distal end surface of the connecting cylinder portion of the second unit; There is obtained an active inter-unit connection portion characterized in that the relative positions of the first and second units are fixed in a compressed state.

The present invention will be described below using embodiments with reference to the drawings.

First, FIGS. 1 and 2 show how, among the active units of a vehicle air conditioner, a cooling unit 1 housing an evaporator in a case and a heater unit 2 having a heater inside a case are connected to each other. Indicates when to do so.

An outward flange 12 is integrally provided at the tip of a connecting cylinder part 11 constituting an air outlet of the cooling unit 1.

On the other hand, a cylindrical adapter 3 is fitted into a connecting cylindrical portion 21 constituting an air inlet of the heater unit 2.

The cross-sectional shapes of the connecting cylindrical portion IL21 and the adapter 3 are substantially the same.

However, although it has a substantially triangular shape in the figure, it is not limited to this.

The adapter 3 is made of metal or plastic, and has a fitting part 31 that is slightly larger than the connecting cylinder part 21 of the heater unit 2, and an outward flange 32 provided at one end of this fitting part. are doing.

This outward flange 32 has the same shape and dimensions as the outward flange 12 of the cooling unit 1.

Referring also to FIG. 3, a ring-shaped first packing 4 is attached to the shaft end surface of this outward flange 32, and a cylindrical second packing 5 is attached to the inner surface of the fitting portion 31. is pasted.

Now, when the fitting part 31 of the adapter 3 is fitted to the outer periphery of the connection cylinder part 21 of the heater unit 2, the compression action of the second packing 5 keeps this fitting part airtight.

The adapter 3 may be attached before or after the heater unit 2 is attached to the vehicle.

Next, the cooling unit 1 is attached to the vehicle so that the flange 12 is in pressure contact with the first packing 4.

As a result, the airtightness of the connection between the cooling unit 1 and the adapter 3 is maintained by the compression action of the first packing 4.

Although the case where the cooling unit 1 is installed after the heater unit 2 has been described as an example, the installation is the same even if the order of installation is reversed.

Further, in the above description, the first and second gaskets 4.5 are both attached to the adapter 3, but the first gasket 4 may be attached to the flange 12 of the cooling unit 1, or the first gasket 4.5 may be attached to the flange 12 of the cooling unit 1. The second gasket 5 may be attached to the contact cylinder portion 21 of the heater unit 2.

Furthermore, instead of providing a flange on the connecting cylinder part 11 of the cooling unit 1, an outward flange is provided on the connecting cylinder part 21 of the heater unit 2, and by turning the adapter 3 upside down, 11 can be similarly implemented.Furthermore, instead of integrally providing the flange 12 at the tip of the connecting cylinder part 11 of the cooling unit 1,
As shown in FIG. 4, a flange-equipped cylindrical part 6 is fitted through a cylindrical third packing 7, and the first packing 4 is sandwiched between this cylindrical part 6 and the adapter 3. Good too.

In this case, it is not necessary to perform any special processing on the tip of the connecting cylindrical part 11, and the same part as the adapter 3 can be used as the cylindrical part 6. It is also easy to implement on units.

The drawing also shows the active units of the vehicle air conditioner.
Although the case where the cooling unit 1 and the heater unit 2 are connected to each other is shown, the case where the cooling unit 1 and a blower unit equipped with a fan inside the case is connected to each other is illustrated.
This can be done similarly.

It goes without saying that various other design changes are also possible.

As explained above using the embodiments, in the connection part between active units of the vehicle air conditioner according to the present invention, the cylindrical adapter fits on the outer periphery of the connection cylinder part, so the ventilation cross-sectional area is The reduction will not cause a decrease in cooling/heating capacity.

In addition, the first gasket interposed between the axial end surface of the adapter and the tip surface of the connecting tube is affixed to either side in advance, so there is no risk of it falling off during connection work or operation. Moreover, when the relative positions of both units are fixed, they are automatically compressed, making the installation process extremely easy.

Furthermore, since the second gasket is interposed at the mutually fitting portion between the adapter and the connecting cylinder, air leakage at this portion is also prevented.

Therefore, according to the present invention, each active unit of a vehicle air conditioner can be easily and reliably connected.

[Brief explanation of the drawing]

Fig. 1 is an exploded view for explaining one embodiment of the present invention, Fig. 2 is a side view showing the connection state partially in section, and Fig. 3 is an exploded view for explaining one embodiment of the present invention.
The figures show a combination of an adapter and a packing, where a is a front view, b is a side view with a partial cross section, and FIG. 4 is a side view with a partial cross section showing the connection state of another embodiment of the present invention. It is a diagram. 1... Cooling unit, 11... Connecting cylinder section, 2... Heater unit, 21...
・Connection cylinder part, 3...adapter, 4...
・First patchkin, 5...Second patchkin.

Claims (1)

[Scope of utility model registration request] In a vehicle air conditioner including first and second units fixed to a vehicle and connected in phase, a cylindrical adapter having one axial end fitted to the outer periphery of a connecting cylindrical portion of the first unit. a first gasket affixed to either one of the other end surface in the axial direction of the adapter and the distal end surface of the connecting tube portion of the second unit; and the connecting tube portion of the first unit. a second gasket interposed in the fitting part with the adapter to maintain airtightness, the other end surface in the axial direction of the adapter and the second gasket.
The first gasket is compressed between the first gasket and the distal end surface of the connecting cylinder of the unit, and the relative positions of the first and second units are fixed with the first gasket being compressed. An active unit-to-unit connection section characterized by: