JPH0911733A - Cooling unit for air conditioner of vehicle - Google Patents

Abstract

PURPOSE: To correctly position a block in the center of a through hole of a dash panel and make no gap between the block and the through hole. CONSTITUTION: A grommet 61 having a lip part 61a at the tip thereof is attached on the periphery of a block 11B having a low pressure refrigerant passage and a high pressure refrigerant passage therein. Caps 65a, 65b are fitted on the front surface of the block 11B such that dust or the like does not come into the refrigerant passage of the block 11B. The lip part 61a is inserted into a groove 105 on the cap to easily insert the block 11B into a through hole. Next, the block 11B is inserted into the through hole from inside of a cabin using the direction of a wing plate as a guide reference and the cap is removed by hanging a fingure on the auxiliary wing plate of the cap, whereby the lip part 61a is tilted to the peripheral side of the through holes to block the gap between the through hole and the block 11B.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] A vehicle air conditioner in which a block having a high-pressure refrigerant passage and a low-pressure refrigerant passage therein is inserted into a through hole of a dash panel so that the refrigerant can be circulated between a vehicle interior side and an engine room side. Cooling unit.

[0002]

2. Description of the Related Art FIG. 5 is a diagram showing an outline of a refrigerant cycle of a vehicle air conditioner. In FIG. 5, the compressor 1
The refrigerant compressed by passes through the condenser 2 and is guided to the unit case 11 of the cooling unit 10,
It passes through the expansion valve 12 and flows into the evaporator 13.
The refrigerant that has undergone heat exchange in the evaporator 13 is guided to the outside of the cooling unit 10 and flows into the compressor 1 again.

The compressor 1 and the condenser 2 are provided in an engine room 30 of the vehicle, and the unit case 11 is provided in a vehicle interior 40 with a dash panel 51 separated from the engine room 30. A pipe 20A for the high-pressure refrigerant passage and a pipe 20B for the low-pressure refrigerant passage project from the unit case 11, and these pipes 20
A and 20B penetrate the through hole 51a of the dash panel 51 and are connected to the compressor 1 and the condenser 2. The through hole 51a is sealed by a grommet 61 in order to prevent water and dust from entering the vehicle interior.

FIG. 6 is a sectional view of the mounting portion of the grommet 61 disclosed in Japanese Utility Model Laid-Open No. Sho 63-30210. As shown, the pipe 20 protruding from the unit case 11
A union nut 62 for connecting to a pipe on the engine room 30 side is screwed to the tips of the A and 20B, and a cap 65 for preventing dust and the like from entering the pipes on the front faces of the pipes 20A and 20B. Is installed.

When the cooling unit 10 is attached to the dash panel 51, first, the pipes 20A and 20B protruding from the unit case 11 are inserted into the through hole 51a of the dash panel 51 from the vehicle compartment side (right side in the figure). Then, a pipe collar 63 is provided at the center of the through hole 51a.
Position so that Next, the through hole 51a
The grommet 61 is fitted and sealed between the pipe collar 63 and the pipe collar 63.

[0006]

In the case of the structure as shown in FIG. 6, it is difficult to position the pipe collar 63 at the center of the through hole 51a of the dash panel 51, and as shown in FIG. 7 (a), the grommet is used. There is a possibility that the mounting shape of 61 may not be symmetrical vertically and horizontally. Since rubber or the like having elasticity is used as the material of the grommet 61, FIG.
Even if it is attached unevenly, the adhesiveness is maintained to some extent, but if it is used for a long time, a gap is created between the dash panel 51 and the grommet 61 as shown in FIG. Dust and the like may enter the cooling unit 10.

An object of the present invention is to accurately position a block having a refrigerant passage therein in the center of a dash panel and to reliably seal a gap between the block and a through hole of the dash panel for vehicle air conditioning. It is to provide a cooling unit.

[0008]

The present invention will be described with reference to FIG. 1 showing an embodiment. In the present invention, the tip portion is projected from the unit case 11, and the high pressure refrigerant passage and the low pressure refrigerant passage are formed inside. Block 11B included in
The block 1 is connected to the unit case 11
Grommet 61 covering the outer peripheral surface of 1B and block 11B
And a block for high pressure 65a that can be mounted on the front surface of the
And a low-pressure cap 65b that closes the inlet and outlet of the low-pressure refrigerant passage at the time of attachment, and the protruding portion of the block 11B from the unit case 11 penetrates the through-hole 51a of the dash panel 51 and the engine room. Three
It is applied to the vehicle air conditioning cooling unit 10 in which the unit case 11 is installed inside the vehicle interior so as to project to the 0 side, and a lip portion capable of covering the peripheral edge portion of the through hole 51a is formed at the tip end portion of the grommet 61. , Each cap 65a,
Each of the caps 65a, 6 has a groove portion into which the lip portion can be inserted, and the lip portion is inserted into the groove portion.
5b is attached to the front of the block 11B, and each cap 65
The above object is achieved by positioning the unit case 11 such that the gap between the through hole 51a and the block 11B is closed by the lip portion when the a and 65b are removed from the front surface of the block 11B. The invention according to claim 2 is, in the vehicle air-conditioning cooling unit 10 according to claim 1, provided with a positioning member, which is used for positioning when the block 11B is inserted into the through hole 51a, on each of the caps 65a, 65b. is there. Claim 3
In the vehicle air-conditioning cooling unit 10 according to claim 2, when the block 11B is inserted into the through hole 51a, the positioning member is composed of four blade pieces 102 arranged in a cross shape. The width of the blade 102 on the engine room side is made longer than the width on the vehicle room side. The invention according to a fourth aspect is the block 11B in the vehicle air conditioning cooling unit 10 according to the third aspect.
Used to remove the caps 65a, 65b from the front surface of the auxiliary blade pieces 103, which are arranged in directions substantially orthogonal to the two adjacent blade pieces, respectively.
It is provided in b.

[0009]

According to the first aspect of the invention, the outer peripheral surface of the block 11B having the high-pressure refrigerant passage and the low-pressure refrigerant passage therein is covered with the grommet 61, and the lip portion at the tip of the grommet 61 is capped for high pressure and low pressure 65a. , 65b are inserted into the groove portions of the blocks 65a and 65b, respectively, and the caps 65a and 65b are mounted on the front surface of the block 11B. In this state, the block 11B is inserted into the through hole 51a of the grommet 61 and the block 1
1B and the unit case 11 are positioned. At this time, if the combined size of the caps 65a and 65b is made substantially the same as the hole diameter of the through hole 51a, the positioning becomes easy. For example, the caps 65a and 65b are attached to the block 11B.
When removed from the front of the through hole 51a and the block 1
The unit case 11 is positioned so that the gap between the unit case 11 and 1B is closed by the lip portion. According to the second aspect of the present invention, by providing the positioning members on the caps 65a and 65b, the positioning accuracy when inserting the block 11B into the through hole 51a is improved. In the invention according to claim 3, the four blade pieces arranged in a cross shape are used as the positioning member, and the width of the blade pieces on the engine room 30 side is made shorter than the width on the side closer to the vehicle compartment. The capped block 11B is easily inserted into the through hole 51a. In the invention according to claim 4, the auxiliary blade piece 103 is arranged in a direction substantially orthogonal to each of the two adjacent blade pieces, and the finger is hung on the auxiliary blade piece 103 so that the cap 65a is removed from the front surface of the block 11B. , 65b are easily removed.

[0010] In the means and means for solving the above problems which explain the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. However, the present invention is not limited to this.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a structure of a tip portion of a vehicle air conditioning cooling unit 10 according to the present invention, and FIG. 2 is a perspective view of the tip portion. 1 and 2, the same components as those in FIG. 5 are designated by the same reference numerals.

In FIG. 1, 11B is an aluminum block having a high pressure refrigerant passage and a low pressure refrigerant passage arranged in parallel inside, and the outer peripheral surface thereof is covered with a grommet 61. A lip portion 61a having a substantially L-shaped cross section is formed at the tip of the grommet 61, and the lip portion 61a can cover the peripheral portion of the through hole 51a of the dash panel 51 from the engine room side. A fitting groove 61 connected to the unit case 11 is provided at the rear end portion of the grommet 61.
b is formed, and the tip portion of the block 11B projects from the unit case 11.

On the front surface of the block 11B, a cap 65a for closing the high pressure refrigerant passage and a cap 65b for closing the low pressure refrigerant passage can be separately mounted. The reason why the caps are separately provided for the respective refrigerant passages in this way is that, for example, there is a case where the piping for the low pressure refrigerant is carried out after the piping for the high pressure refrigerant is carried out.

FIG. 3 is a perspective view showing the outer shape of the caps 65a and 65b, and FIGS. 4A, 4B and 4C are respectively shown in FIG.
Caps 65a, 6 viewed from the A, B, and C directions of
It is sectional drawing of 5b.

The outer dimensions of the cap 65a and the cap 65b attached to the block 11B are designed to be substantially the same as or slightly smaller than the hole diameter of the through hole 51a of the dash panel 51.
The block 11B can be inserted into the through hole 51a from the vehicle interior side to the engine room side with the 5a and 65b attached, and no large gap is formed between the through hole 51a and the block 11B.

Further, each of the caps 65a, 65b is provided with four blade pieces 102 having outer corners which are vertically arranged from above the base portion 101 in a cross shape as shown in FIG. By the blade piece 102 that has been dropped, the through hole 5
It serves as a guide when inserting the block 11B into 1a,
The block 11B is easily positioned in the through hole 51a. By lowering the corner, the width on the engine room side is made shorter than the width on the vehicle compartment side as shown in FIG. 4A, so that the block 11B can be easily inserted into the through hole 51a. Further, each of the caps 65a and 65b is provided with two auxiliary blade pieces 103 arranged in a direction substantially orthogonal to the two adjacent blade pieces 102, respectively.
The auxiliary blade pieces 103 reinforce the blade pieces 102, and the cap 65
A and 65b can be easily removed.

On the other hand, on the back side of the base portion 101 of each of the caps 65a and 65b, as shown in FIG. 4A, a skirt portion 106 in which a part of the peripheral edge of the base portion 101 is opened.
And a groove portion 105 which is surrounded by a cylindrical sealing portion 104 for sealing the high-pressure or low-pressure refrigerant passage and a skirt portion 106 and into which the lip portion 61a at the tip of the grommet 61 can be inserted.
Are provided, and the sealing portion 104 is provided with caps 65a, 65
The protrusion 104a is formed so that b does not accidentally come off. The skirt portion 106 is formed to cover the engine room side of the outer periphery of the block 11B by combining the caps 65a and 65b.

The procedure for mounting the unit case 11 configured as shown in FIGS. 1 to 4 on the dash panel 51 will be described below. The unit case 1 has one end around a block 11B having a low-pressure refrigerant passage and a high-pressure refrigerant passage therein.
Attach the grommet 61 connected to 1.

Next, caps 65a and 65b are attached to the front surface of the block 11B so that dust and the like do not enter the refrigerant passage in the block 11B. At that time, the cap 65a,
The lip portion 61a at the tip portion of the grommet 61 is deformed by inserting the lip portion 61a at the tip portion of the grommet 61 into the groove portion 105 provided in the portion 65b so that the block 11B can be easily inserted into the through hole 51a of the dash panel 51.

Next, as shown in FIG. 2, the block 11B is inserted into the through hole 51a of the dash panel 51 from the passenger compartment side. At that time, the blade pieces 1 of the caps 65a and 65b
The block 11B is positioned by using the direction of 02 as a guide. Then, the unit case 11 is attached to the dash panel 51.
After that, the fingers are hooked on the auxiliary blade pieces 103 of the caps 65a and 65b to remove the caps 65a and 65b from the engine room side. When the caps 65a and 65b are removed, the lip portion 61a at the tip portion of the grommet 61 falls toward the peripheral edge of the through hole 51a, and the gap between the through hole 51a and the block 11B becomes a lip as shown in FIG. 1 (b). It is blocked by the part 61a. The grommet 61
The groove 61c on the inner side of the base portion of the lip portion 61a serves to assist the deformation of the lip portion 61a.

As described above, in this embodiment, the dash panel 51 is attached to the tip of the grommet 61.
Forming a lip portion 61a capable of covering the peripheral edge portion of the through hole 51a of each of the caps 65a and 65b.
When the block 11B with the caps 65a and 65b is inserted into the through hole 51a with the cap 65a and 65b being removed after the insertion, the lip portion 61a at the tip portion of the grommet 61 has the through hole 51a. Since the peripheral portion is covered, the gap between the through hole 51a and the block 11B can be easily and reliably blocked.

Further, since the outer dimensions of the combined caps 65a and 65b are made substantially the same as the hole diameter of the through hole 51a of the dash panel 51, when the block 11B is inserted into the through hole 51a, the block 11B and the through hole 51a are separated from each other. The gap formed between them can be reduced, and the position of the block 11B can be easily regulated. Furthermore, since each cap 65a, 65b is provided with the four blade pieces 102 arranged in a cross shape,
The block 11B can be easily and accurately positioned when it is inserted into the through hole 51a. Also, the caps 65a, 65
Since the auxiliary blade piece 103 is provided in b, the cap 65a,
It becomes easy to remove 65b. Furthermore, since the gap of the through hole 51a is closed by only one grommet 61, the sealing performance can be improved.

[0023]

As described in detail above, according to the present invention, a lip portion capable of covering the peripheral edge portion of the through hole of the dash panel is formed at the tip portion of the grommet, and the lip portion is formed inside each cap. With the cap inserted, the block with a cap is inserted into the through hole, and when the cap is removed after insertion, the lip part covers the peripheral edge of the through hole. The gap can be blocked easily and reliably. According to the second aspect of the present invention, since each cap is provided with a positioning member that can be used for positioning when inserting the block into the through hole, the block can be inserted into the central portion of the through hole. This allows
Since the gaps are evenly formed between the through holes and the blocks, the gaps can be surely closed with the grommet. According to the third aspect of the invention, the width of the blade pieces on the side closer to the vehicle compartment is shorter than the width on the engine room side, so that the block with the cap can be easily inserted into the through hole. Further, since the four blade pieces are arranged in a cross shape, the block can be easily positioned. According to the invention described in claim 4, since the auxiliary blade pieces are arranged in the directions substantially orthogonal to the two adjacent blade pieces, the cap can be easily removed from the block by putting a finger on the auxiliary blade pieces. Can be removed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a structure of a tip portion of a vehicle air conditioning cooling unit according to the present invention.

FIG. 2 is a perspective view of a tip portion of a pipe.

FIG. 3 is a perspective view showing the outer shape of a cap.

FIG. 4 is a three-sided view of the cap viewed from the directions A, B, and C of FIG.

FIG. 5 is a diagram showing an outline of a refrigerant cycle of a vehicle air conditioner.

FIG. 6 is a cross-sectional view of a grommet mounting portion disclosed in Japanese Utility Model Laid-Open No. Sho 63-30210.

FIG. 7 is a diagram showing a mounting shape of a grommet.

[Explanation of symbols]

 11 Unit Case 51 Dash Panel 51a Through Hole 61 Grommet 65a, 65b Cap 11B Block 102 Blade Piece 103 Auxiliary Blade Piece 104 Blocking Section 105 Groove Section

Claims (4)

[Claims] 1. A unit case for accommodating a heat exchanger for refrigerant, a block having a tip portion protruding from the unit case, a block having a high-pressure refrigerant passage and a low-pressure refrigerant passage therein, and connected to the unit case. Along with, a grommet that covers the outer peripheral surface of the block, a high-pressure cap that can be mounted on the front surface of the block and blocks the inlet and outlet of the high-pressure refrigerant passage during mounting, and a front surface of the block that can be mounted on the front surface of the block. A low pressure cap that closes the inlet / outlet of the low pressure refrigerant passage, wherein the protruding portion of the block from the unit case penetrates through the through hole of the dash panel and protrudes toward the engine room. A cooling unit for vehicle air-conditioning installed on the inside of the vehicle, wherein the tip of the grommet is , A lip portion capable of covering the peripheral portion of the through hole is formed, each of the caps has a groove portion into which the lip portion can be inserted, and each cap has a groove portion into which the lip portion is inserted. The unit case is mounted on the front surface of the block, and the unit case is positioned so that a gap between the through hole and the block is closed by the lip portion when the caps are removed from the front surface of the block. A cooling unit for vehicle air conditioning, which is characterized in that 2. The vehicle air conditioning cooling unit according to claim 1, wherein each cap includes a positioning member used for positioning when the block is inserted into the through hole. Cooling unit. 3. The vehicle air conditioning cooling unit according to claim 2, wherein the positioning member is composed of four blade pieces arranged in a cross shape, and the blade pieces connect the block to the through hole. A cooling unit for vehicle air conditioning, characterized in that the width of the engine room side portion is made smaller than the width of the vehicle interior side portion when it is inserted. 4. The vehicle air conditioning cooling unit according to claim 3, wherein each of the caps is used when the cap is removed from the front surface of the block, and is substantially orthogonal to two adjacent blade pieces. A cooling unit for vehicle air conditioning, characterized in that it is provided with auxiliary blade pieces that are arranged in the direction of.