JP2018103693A - Air Conditioning Unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning unit that can prevent an occupant from touching piping without addition of a dedicated covering member.SOLUTION: The air conditioning unit comprises: an air conditioning case 12; a heater core; hot water piping 18 connected to the heater core; a packing 24; and a bracket 26 in which the packing 24 is installed. In the air conditioning case 12 are provided a first cramp part 21 and a second cramp part 22 which sandwich the hot water piping 18. In a state where the air conditioning case 12 is installed in a bulkhead 3, a case penetrating hole 126 for taking out the hot water piping 18 is arranged in at least part in an area opposing to a bulkhead penetrating hole 3a and the packing 24 in a direction orthogonal to the bulkhead 3, of a wall 125 of the air conditioning case 12. Further, a part 18e leading from a position of the case penetrating hole 126 to the bulkhead penetrating hole 3a, of the hot water piping 18, is covered with the first and second cramp parts 21 and 22 and the packing 24.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an air conditioning unit for a vehicle.

  Patent Document 1 discloses an air conditioning unit. The air conditioning unit includes an air conditioning case, a heat exchanger, a pipe, and a pair of clamp portions. The heat exchanger is disposed inside the air conditioning case. One end of the pipe is connected to the heat exchanger. Most of the piping is located outside the air conditioning case. A pair of clamp parts are being fixed to the air-conditioning case in the state which pinched piping outside the air-conditioning case. A portion of the pipe between the heat exchanger and the pair of clamp portions is exposed outside the air conditioning case. The pair of clamp parts is configured separately from the air conditioning case.

JP 2002-127735 A

  By the way, when arrange | positioning an air-conditioning unit provided with the heat exchanger for a heating in a vehicle interior, if a part of piping is exposed outside the air-conditioning case like the above-mentioned conventional air-conditioning unit, a passenger | crew touches piping. There is a fear. For this reason, in the conventional air conditioning unit, it is necessary to add a dedicated covering member only for covering the pipe so that the passenger does not touch the pipe.

  However, when a dedicated covering member is added, problems such as an increase in the price of the air conditioning unit and an increase in the number of assembly steps at the time of manufacturing the air conditioning unit occur.

  An object of this invention is to provide the air conditioning unit which can prevent a passenger | crew from touching piping, without adding a special coating | coated member in view of the said point.

In order to achieve the above object, in the invention described in claim 1,
An air conditioning unit for a vehicle that blows out hot air toward the passenger compartment,
An air conditioning case (12) having an air passage (12a) formed therein;
A heat exchanger (16) for heating, which is disposed inside the air conditioning case and heats the air by heat exchange with the heat medium;
It has one end (18a) and the other end (18b) on the opposite side, one end side including one end is connected to the heat exchanger for heating inside the air conditioning case, and the other end side including the other end is outside the air conditioning case. A pipe (18) taken out and through which the heat medium flows;
A fixing portion (21, 22, 31, 32) for fixing the other end of the pipe to the air conditioning case;
The air conditioning case is installed on the partition wall (3) of the vehicle body,
The partition wall separates the vehicle interior space (4) on the side where the air conditioning case is installed from the opposite side space (5) on the opposite side of the vehicle interior space with the partition wall interposed therebetween, and penetrates the partition wall. Has a hole (3a),
The wall (125) on the partition wall side of the air conditioning case has a case through hole (126) penetrating the wall,
The other end of the pipe is taken out to the opposite space through the case through hole and the partition through hole,
The air conditioning unit includes a seal portion (24) that closes a gap between the peripheral portion surrounding the partition wall through-hole and the pipe,
In the state in which the air conditioning case is installed in the partition wall, the case through hole is disposed in at least a part of a region facing the partition wall through hole and the seal portion in a direction orthogonal to the partition wall on the partition wall side of the air conditioning case. In addition, a portion (18e) of the piping from the position of the case through hole to the position of the partition wall through hole is covered with the fixing portion and the seal portion.

  According to this, a portion from the position of the case through hole to the position of the partition wall through hole in the pipe is covered with the fixing portion and the seal portion. For this reason, it is possible to prevent an occupant from touching the pipe without adding a dedicated covering member.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

It is a schematic diagram which shows arrangement | positioning in the vehicle interior of the air conditioning unit in 1st Embodiment. It is a schematic diagram which shows the structure of the air conditioning unit in 1st Embodiment. It is the perspective view of the air conditioning unit in 1st Embodiment, Comprising: It is the figure which looked at the air conditioning unit from diagonally upper side. It is a disassembled perspective view of the air conditioning unit in 1st Embodiment. It is the perspective view of the air-conditioning unit in 1st Embodiment, Comprising: It is the figure which looked at the air-conditioning unit from diagonally lower side. FIG. 3 is an enlarged view of a VI part in FIG. 2. It is an enlarged view of hot water piping and its peripheral part among Drawing 5, and is a figure showing the state before attaching a bracket and packing. It is a perspective view of the bracket simple substance in a 1st embodiment, and is a figure seen from the upper part in the up-and-down direction shown in FIG. It is the front view of the downstream case in 1st Embodiment, Comprising: It is the figure which looked at the downstream case from the vehicle front side. It is the XX sectional view taken on the line in FIG. It is the front view of the downstream case in 1st Embodiment, Comprising: It is the figure which looked at the hot water piping and the downstream case from the vehicle rear side. It is an enlarged view of the XII part in FIG. It is a top view of the air-conditioning unit in the comparative example 1. It is a side view of the air conditioning unit of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other will be described with the same reference numerals.

(First embodiment)
As shown in FIG. 1, an air conditioning unit 10 for a vehicle according to this embodiment is disposed in a passenger compartment 2 of a vehicle 1. The air conditioning unit 10 constitutes a part of a vehicle air conditioner. The air conditioning unit 10 blows warm air toward the vehicle interior.

  The air conditioning unit 10 is installed in the partition wall 3 of the vehicle body. The vehicle body is the body of the vehicle 1. The partition wall 3 is an attachment wall to which the air conditioning unit 10 is attached. The partition wall 3 constitutes the floor surface of the passenger compartment 2. The partition wall 3 separates the vehicle interior space 4 and the vehicle exterior space 5. The vehicle interior space 5 is a space on the opposite side of the vehicle interior space 4 on the opposite side across the partition wall 3. A plurality of seats 6 are installed in the passenger compartment 2. The plurality of seats 6 include a driver seat 6a and a rear seat 6b on the vehicle rear side with respect to the driver seat 6a. The air conditioning unit 10 is disposed under the rear seat 6b.

  As shown in FIG. 2, the air conditioning unit 10 includes an air conditioning case 12, a blower 14, and a heater core 16. The air conditioning unit 10 is an air conditioning unit dedicated to heating.

  The air conditioning case 12 forms an outer shell of the air conditioning unit 10. The air conditioning case 12 is made of resin. The air conditioning case 12 has an air passage 12a formed therein. The air passage 12 a extends along the partition wall 3. For this reason, the flow direction of the air flowing through the air passage 12 a is a direction along the partition wall 3. Although not shown, a duct is connected to the air flow downstream side of the air conditioning case 12.

  The blower 14 is disposed inside the air conditioning case 12. The blower 14 forms an air flow toward the vehicle interior. The blower 14 includes a centrifugal fan 141 and a fan motor 142. The fan motor 142 is an electrical component that rotates the fan 141.

  The heater core 16 is disposed inside the air conditioning case 12. The heater core 16 is disposed on the air flow downstream side of the blower 14. The heater core 16 is a heating heat exchanger that heats air by heat exchange with a heat medium. The heat medium is engine cooling water as warm water.

  In the present embodiment, the entire heater core 16 is disposed inside the air conditioning case 12. The directions of the air inflow surface 16 a and the air outflow surface 16 b of the heater core 16 are orthogonal to or close to the partition wall 3.

  The air conditioning unit 10 has two hot water pipes 18. The engine cooling water flows through the hot water pipe 18. The hot water pipe 18 is basically cylindrical. The hot water pipe 18 has one end 18a and the other end 18b opposite to the one end 18a. One end 18 a side of the hot water pipe 18 including the one end 18 a among the hot water pipes 18 is connected to the heater core 16. The other end 18 b side of the hot water pipe 18 including the other end 18 b of the hot water pipe 18 is taken out of the air conditioning case 12. The other end 18 b side of the hot water pipe 18 is taken out to the vehicle interior space 5.

  In the air conditioning unit 10, air from the blower 14 passes through the heater core 16. When the air passes through the heater core 16, the air is heated to form hot air. This warm air is blown out into the passenger compartment 2 from a duct (not shown).

  As shown in FIGS. 2, 3 and 4, the air conditioning case 12 has an upstream case 121 and a downstream case 122. The upstream case 121 constitutes a portion of the air conditioning case 12 on the upstream side of the air flow. The downstream case 122 constitutes a portion of the air conditioning case 12 that is on the downstream side of the air flow with respect to the upstream case 121. The upstream case 121 further includes an upstream upper case 123 and an upstream lower case 124. The upstream upper case 123 constitutes the upper part of the upstream case 121. The upstream lower case 124 constitutes a lower part of the upstream case 121. The upstream side case 121 is configured by connecting the upstream side upper case 123 and the upstream side lower case 124. The air-conditioning case 12 is configured by connecting the upstream case 121 and the downstream case 122. Further, a duct (not shown) is connected to the downstream side of the downstream case 122 in the air flow direction.

  As shown in FIG. 6, the bottom wall 125 of the air conditioning case 12 has a case through hole 126 that penetrates the bottom wall 125. The case through hole 126 is constituted by a peripheral edge portion 127 surrounding the case through hole 126.

  The bottom wall 125 is a wall on the partition wall 3 side of the air conditioning case 12. The case through hole 126 is formed in the mating portion 124 a of the upstream lower case 124 and the mating portion 122 a of the downstream case 122. In other words, the downstream case 122 and the upstream lower case 124 are positioned on both sides of the case through hole 126. The downstream case 122 has a part 127 a of the peripheral edge 127 of the case through hole 126. The upstream lower case 124 has another part 127 b of the peripheral edge 127 of the case through hole 126.

  The other end 18 b side of the hot water pipe 18 is taken out of the air conditioning case 12 through the case through hole 126. The part 18c taken out of the air conditioning case 12 from the case through hole 126 to the other end 18b in the hot water pipe 18 is straight. The extending direction of the portion 18 c is a direction orthogonal to the partition wall 3. The extending direction of the portion 18c may be a direction intersecting with the partition walls 3.

  Further, the partition wall 3 has a partition wall through hole 3 a penetrating the partition wall 3. The partition wall through hole 3 a is provided corresponding to each of the two hot water pipes 18. In the state where the air conditioning case 12 is installed in the partition wall 3, the other end 18b side of the hot water pipe 18 is taken out to the vehicle interior space 5 through the partition wall through hole 3a. The other end 18b side of the hot water pipe 18 is connected to a hot water hose (not shown).

  As shown in FIGS. 2 and 3, the hot water pipe 18 is arranged with a target bent so as to be a predetermined pipe path in the air passage 12 a. That is, the hot water pipe 18 is bent within a range from the one end 18 a to the case through hole 126. In other words, a portion of the hot water pipe 18 from the one end 18a to the case through hole 126 has a shape having a bent portion 18d. In the present embodiment, a part of the internal space of the air conditioning case 12 is used as a routing area for the hot water pipe 18.

  As shown in FIGS. 4, 6, and 7, the air conditioning case 12 includes two first clamp portions 21 and two second clamp portions 22. The first clamp part 21 and the second clamp part 22 are located outside the air conditioning case 12. One first clamp portion 21 and one second clamp portion 22 are provided for each of the two hot water pipes 18. The first clamp portion 20 and the second clamp portion 21 are fixing portions that are fixed to the air conditioning case 12 with the hot water pipe 18 interposed therebetween. The inner wall surface of the first clamp part 21 and the inner wall surface of the second clamp part 22 are shaped according to the outer shape of the hot water pipe 18.

  As shown in FIG. 6, the first clamp portion 21 is continuous with a part 127 a of the peripheral edge portion 127 included in the downstream case 122. The first clamp portion 21 extends from a part 127 a of the peripheral portion 127 toward the outside of the air conditioning case 12. The 1st clamp part 21 and the downstream case 122 are comprised by the integral resin molded product. In the present embodiment, the downstream case 122 corresponds to the first case.

  The second clamp part 22 is connected to another part 127 b of the peripheral edge part 127 of the upstream lower case 124. The second clamp part 22 extends from the other part 127 b of the peripheral part 127 toward the outside of the air conditioning case 12. The 2nd clamp part 22 and the upstream lower case 124 are comprised by the integral resin molded product. In the present embodiment, the upstream lower case 124 corresponds to a second case.

  As shown in FIGS. 4, 5, and 6, the air conditioning unit 10 includes a packing 24 and a bracket 26. The packing 24 is a seal portion that closes a gap between the peripheral edge surrounding the partition wall through hole 3 a and the hot water pipe 18. The packing 24 has a packing through hole 241 for allowing the hot water pipe 18 to pass therethrough. The packing 24 has a sheet shape. The packing 24 is made of urethane foam resin.

  The bracket 26 is a member having an installation surface 261 on which the packing 24 is installed. The bracket 26 includes a main body portion 265 that is a plate-like member, and a side wall portion 266 that continues to the periphery of the main body portion 265. The main body 265 has an installation surface 261 and an opposite surface 264 opposite to the installation surface 261. In the present embodiment, the main body portion 265 corresponds to the packing installation portion. A bracket through-hole 262 for allowing the hot water pipe 18 to penetrate is formed in the main body 265.

  As shown in FIG. 6, the bracket 26 is fixed to the bottom wall 125 of the air conditioning case 12 with screws 263. The bracket 26 may be fixed by other methods. The main body 265 sandwiches the packing 24 between the bulkhead 3 of the vehicle body. Thereby, the clearance gap between the peripheral part surrounding the partition through-hole 3a and the hot water piping 18 is closed.

  The bracket 26 has two first holding ribs 31 and two second holding ribs 32. One first restraining rib 31 and one second restraining rib 32 are provided for each of the two hot water pipes 18. The first holding rib 31 and the second holding rib 32 are fixing portions that fix the hot water pipe 18 to the air conditioning case 12 by holding both the first clamp portion 21 and the second clamp portion 22 therebetween. The first holding rib 31 corresponds to the first holding portion. The second holding rib 32 corresponds to the second holding portion.

  As shown in FIG. 8, the first holding rib 31 and the second holding rib 32 are formed on the opposite surface 264 of the main body portion 265. The first holding rib 31 and the second holding rib 32 protrude from the opposite surface 264. The first holding rib 31 and the second holding rib 32 extend linearly. The first restraining rib 31 and the second restraining rib 32 are arranged side by side with a space therebetween. In the present embodiment, the first holding rib 31 and the second holding rib 32 are arranged in a straight line.

  The first holding rib 31 and the second holding rib 32 are integral with the bracket 26. That is, the first restraining rib 31, the second restraining rib 32, and the main body portion 265 are formed of an integral resin molded product.

  FIG. 10 is a cross-sectional view of the bracket 26 in FIG. As shown in FIG. 10, when the bracket 26 is fixed to the air conditioning case 12, the first clamp portion 21 and the second clamp portion 22 sandwich the hot water pipe 18. In the direction in which the first clamp portion 21 and the second clamp portion 22 are arranged, the first clamp rib 31 and the second clamp rib 32 hold the first clamp portion 21 and the second clamp portion 22 with the hot water pipe 18 sandwiched therebetween. I hold it down. Thereby, the 1st clamp part 21 and the 2nd clamp part 22 are being fixed in the state which pinched | interposed the hot water piping 18. As shown in FIG.

  When the bracket 26 is assembled, the bracket 26 is inserted into the first clamp portion 21 and the second clamp portion 22 with the hot water pipe 18 sandwiched therebetween. Accordingly, the first clamp portion 21 and the second clamp portion 22 in a state where the hot water pipe 18 is sandwiched are press-fitted between the first restraining rib 31 and the second restraining rib 32. For this reason, the first clamp rib 21 and the second clamp section 22 in a state of sandwiching the hot water pipe 18 are press-fitted between the first clamp rib 31 and the second clamp rib 32, and the first clamp rib 31. And held by the second holding rib 32. Thus, the 1st clamp part 21 and the 2nd clamp part 22 of the state which pinched | interposed the hot water piping 18 are the 1st holding | suppressing rib 31 so that the 1st clamp part 21 and the 2nd clamp part 22 may not leave | separate. It fits between the second holding ribs 32.

  FIG. 11 shows a state in which the first clamp portion 21 of the downstream case 122 holds the hot water pipe 18. FIG. 12 is an enlarged view of the first clamp part 21 and the hot water pipe 18 in FIG. 11.

  As shown in FIG. 12, a pair of recesses 34 is provided on the outer surface 181 of the hot water pipe 18. Each of the pair of recesses 34 is a portion that is recessed toward the center side of the hot water pipe 18. One of the pair of recesses 34 is a first recess 34a. The other of the pair of recesses 34 is a second recess 34b. The part of the hot water pipe 18 where the pair of recesses 34 is provided has a narrower width of the hot water pipe 18 than the part of the hot water pipe 18 other than the pair of recesses 34.

  Each of the pair of recesses 34 is disposed on both sides of the center of the hot water pipe 18. Each of the pair of recesses 34 has a flat bottom surface 341. Recessed directions of the pair of concave portions 34 are the left and right directions in FIG. The left-right direction in FIG. 12 is a direction parallel to the butting surface 212 of the first clamp part 21. The abutting surface 212 is a surface in contact with the second clamp portion 22 as shown in FIG. In other words, the left-right direction in FIG. 12 is a direction perpendicular to the arrangement direction of the first clamp part 21 and the second clamp part 22.

  A pair of convex portions 36 is provided on the inner surface 211 of the first clamp portion 21. Each of the pair of convex portions 36 is a portion protruding from the inner surface 211 toward the hot water pipe 18. One of the pair of convex portions 36 is a first convex portion 36a. The other of the pair of convex portions 36 is a second convex portion 36b.

  Each of the pair of convex portions 36 is provided on the inner surface 211 at a position facing each of the pair of concave portions 34 in a state where the first clamp portion 21 and the second clamp portion 22 sandwich the hot water pipe 18. . That is, the 1st convex part 36a is provided in the position facing the 1st recessed part 34a. The 2nd convex part 36b is provided in the position which opposes the 2nd recessed part 34b.

  Each of the pair of convex portions 36 is disposed at a position facing each other on the inner surface 211. In other words, each of the pair of convex portions 36 is provided on both sides of the first clamp portion 21 with the hot water pipe 18 sandwiched in a state where the first clamp portion 21 is in contact with the hot water pipe 18. As for each of a pair of convex part 36, the top part 361 of a convex part is a flat surface.

  In a state where the first clamp part 21 and the second clamp part 22 sandwich the hot water pipe 18, each of the pair of concave parts 34 and each of the pair of convex parts 36 are fitted together. In more detail, the 1st convex part 36a and the 2nd convex part 36b pinch | interpose the part in which the 1st recessed part 34a and the 2nd recessed part 34b were provided among the hot water piping 18. As shown in FIG. Thereby, the 1st convex part 36a and the 1st recessed part 34a are fitted. The 2nd convex part 36b and the 2nd recessed part 34b are fitted.

  In this embodiment, the 1st recessed part 34a comprises the piping side fitting part provided in piping, or the piping side 1st fitting part. The 2nd recessed part 34b comprises the piping side 2nd fitting part provided in piping. The 1st convex part 36a comprises the clamp side fitting part or clamp side 1st fitting part fitted by the piping side fitting part. The 2nd convex part 36b comprises the clamp side 2nd fitting part fitted with the piping side 2nd fitting part.

  Next, the effect of the air conditioning unit 10 of the present embodiment will be described in comparison with the air conditioning unit 50 of Comparative Example 1 shown in FIGS.

  In the air conditioning unit 50 of the comparative example 1, a portion of the heater core 16 connected to the hot water pipe 18 is located outside the air conditioning case 12. The hot water pipe 18 is fixed to the air conditioning case 12 by a fixing portion 52 that is configured as a separate part from the air conditioning case 12. A portion of the hot water pipe 18 from the heater core 16 to the fixed portion 52 is bent outside the air conditioning case 12. A portion of the hot water pipe 18 from the heater core 16 to the fixed portion 52 is covered with a dedicated covering member 54 for the purpose of covering the hot water pipe 18 only. The fixing part 52 sandwiches the hot water pipe 18. When the fixing portion 52 is tightened by the fixing screw 56, the hot water pipe 18 is firmly held.

  Thus, in the air conditioning unit of the comparative example 1, the exclusive covering member 54 is added. For this reason, problems such as an increase in the price of the air conditioning unit and an increase in the number of assembly steps at the time of manufacturing the air conditioning unit occur.

  On the other hand, in the air conditioning unit 10 of the present embodiment, as shown in FIG. 6, when the air conditioning case 12 is installed in the partition wall 3, the case through hole 126 is separated from the partition through hole 3 a in the air conditioning case 12. It is arranged in the opposite area. To face means to face in the direction orthogonal to the partition 3. A portion 18 e of the hot water pipe 18 from the position of the case through hole 126 to the position of the partition wall through hole 3 a is covered with the first clamp portion 21, the second clamp portion 22, the bracket 26, and the packing 24. For this reason, the hot water pipe 18 is not exposed to the vehicle interior space 4. Therefore, according to the air conditioning unit 10 of the present embodiment, it is possible to prevent the occupant from touching the hot water pipe 18 without adding a dedicated covering member.

  Further, in the air conditioning unit 50 of Comparative Example 1, the portion of the hot water pipe 18 from the heater core 16 to the fixed portion 52 is arranged outside the air conditioning case 12.

  On the other hand, in the air conditioning unit 10 of the present embodiment, portions of the hot water pipe 18 from the heater core 16 to the first clamp part 21 and the second clamp part 22 are arranged inside the air conditioning case 12. For this reason, according to the air conditioning unit 10 of this embodiment, since the hot water piping 18 is not routed outside the air conditioning case 12, the entire air conditioning unit can be made smaller than the air conditioning unit 50 of the first comparative example.

  Moreover, in the air conditioning unit 10 of this embodiment, the part 18c taken out from the case through-hole 126 to the outer side of the air-conditioning case 12 among the hot water piping 18 is straight shape.

  According to this, the part 18c taken out to the outer side of the air-conditioning case 12 among the hot water piping 18 can be shortened. For this reason, the air conditioning unit 10 can be downsized. Furthermore, the hot water pipe 18 and the bracket 26 can be easily assembled. Installation to the partition 3 of the air conditioning unit 10 becomes easy.

  Moreover, in the air conditioning unit 10 of the comparative example 1, the hot water piping 18 is firmly held by screw fixing.

  On the other hand, in the air conditioning unit 10 of the present embodiment, the first clamp part 21 and the second clamp part 22 in a state of sandwiching the hot water pipe 18 are between the first restraining rib 31 and the second restraining rib 32. The hot water pipe 18 is held by being inserted. The first restraining rib 31 and the second restraining rib 32 are formed of an integral resin molded product. For this reason, the position shift of the hot water piping 18 in the radial direction of the hot water piping 18 with respect to the first clamp portion 21 and the second clamp portion 22 can be prevented. Therefore, the hot water pipe 18 can be firmly held without being fixed by screws.

  Moreover, in the air conditioning unit 10 of the comparative example 1, the fixing | fixed part 52 comprised with the air conditioning case 12 and a separate component is added.

  On the other hand, in the air conditioning unit 10 of this embodiment, the 1st clamp part 21 and the downstream case 122 are comprised with the integral resin molded product. The 2nd clamp part 22 and the upstream lower case 124 are comprised by the integral resin molded product. For this reason, according to the air conditioning unit 10 of this embodiment, compared with the air conditioning unit 50 of the comparative example 1, the number of parts which comprise the air conditioning unit 10 can be reduced.

  Moreover, in the air conditioning unit 10 of this embodiment, the 1st holding rib 31, the 2nd holding rib 32, and the main-body part 265 of the bracket 26 are comprised by the integral resin molded product.

  According to this, compared with the case where the 1st holding rib 31 and the 2nd holding rib 32, and the main-body part 265 of the bracket 26 are separate bodies, the number of parts which comprise the air conditioning unit 10 can be reduced.

  Furthermore, in the air conditioning unit 10 of the present embodiment, a pair of recesses 34 is provided in the hot water pipe 18. A pair of convex portions 36 are provided on the first clamp portion 21. In a state where the first clamp part 21 and the second clamp part 22 sandwich the hot water pipe 18, each of the pair of concave parts 34 and each of the pair of convex parts 36 are fitted together. For this reason, the position shift of the hot water piping 18 in the extending | stretching direction of the hot water piping 18 with respect to the 1st clamp part 21 and the 2nd clamp part 22 can be prevented. Therefore, the hot water pipe 18 can be held more firmly.

  In the air conditioning unit 10 of Comparative Example 1, a fixed screw 56 is used. For this reason, it is necessary to fix the fixed screw 56 in a direction perpendicular to the extending direction of the hot water pipe 18 when the air conditioning unit 50 is assembled. On the other hand, when the air conditioning unit 10 of the present embodiment is assembled, the bracket 26 extends in the extending direction of the hot water pipe 18 with respect to the first clamp part 21 and the second clamp part 22 with the hot water pipe 18 interposed therebetween. Inserted. Thereby, the 1st clamp part 21 and the 2nd clamp part 22 of the state which pinched | interposed the hot water piping 18 were fitted between the 1st suppression rib 31 and the 2nd suppression rib 32, and are fixed. Therefore, according to the air conditioning unit 10 of the present embodiment, when the air conditioning unit 10 is assembled, work in a direction perpendicular to the extending direction of the hot water pipe 18 can be made unnecessary.

(Other embodiments)
(1) In the above-described embodiment, all of the case through holes 126 are arranged in the region facing the partition wall through hole 3a in the air conditioning case 12, but the present invention is not limited to this. A part of the case through-hole 126 may be disposed in at least a part of the region facing the partition wall through-hole 3 a in the air conditioning case 12. In addition, a part of the case through hole 126 may be disposed in at least a part of a region facing the partition wall through hole 3 a and the packing 24 in the air conditioning case 12. Even in such a case, the distance between the case through hole 126 and the partition wall through hole 3a can be shortened. Therefore, a portion 18 e from the position of the case through hole 126 to the position of the partition wall through hole 3 a in the hot water pipe 18 can be covered with the first clamp portion 21, the second clamp portion 22, the bracket 26, and the packing 24.

  When the positions of the case through hole 126 and the partition wall through hole 3a are shifted in the direction parallel to the partition wall 3, the portion 18e of the hot water pipe 18 from the position of the case through hole 126 to the position of the partition wall through hole 3a is It may be bent. In this case, the portion 18 e may be straight and may extend in a direction intersecting the partition wall 3.

  (2) In the above-described embodiment, the first clamp portion 21 and the downstream case 122 are configured as an integral resin molded product. The 2nd clamp part 22 and the upstream lower case 124 are comprised by the integral resin molded product. However, the first clamp portion 21 and the downstream case 122 may be separate. The second clamp part 22 and the upstream lower case 124 may be separate bodies.

  (3) In the above-described embodiment, the first restraining rib 31, the second restraining rib 32, and the main body portion 265 of the bracket 26 are formed of an integral resin molded product, but the present invention is not limited to this. The first holding rib 31 and the second holding rib 32 and the main body portion 265 of the bracket 26 may be separate. In this case, the first restraining rib 31 and the second restraining rib 32 are formed of an integral resin molded product.

  (4) In the above-described embodiment, the air conditioning unit 10 is disposed under the rear seat 6b, but is not limited thereto. The air conditioning unit 10 may be disposed at any location in the passenger compartment 2. For example, the air conditioning unit 10 may be disposed on the vehicle front side in the passenger compartment 2.

  (5) In the above-described embodiment, the space from which the other end 18b side of the hot water pipe 18 is taken out is the vehicle interior space 5, but is not limited thereto. The space from which the other end 18 b side is taken out of the hot water pipe 18 may be a space such as a trunk room communicating with the vehicle interior space 4.

  (6) In the above-described embodiment, the extending direction of the portion 18c from the case through hole 126 to the other end 18b of the hot water pipe 18 is a direction orthogonal to the partition wall 3, but is not limited thereto. The extending direction of the portion 18 c may be a direction intersecting the partition wall 3.

  (7) In the above-described embodiment, the first clamp portion 21, the second clamp portion 22, the first restraining rib 31, and the second restraining rib 32 are used as the fixing portion. Not. Another fixing member may be used as the fixing portion.

  (8) In the above-described embodiment, the packing 24 is used as the seal portion, but the present invention is not limited to this. Other seal members such as grommets may be used as the seal portion.

  (9) In the above-described embodiment, the pair of concave portions 34 is provided in the hot water pipe 18 and the pair of convex portions 36 are provided in the first clamp portion 21. However, the present invention is not limited to this.

  For example, the hot water pipe 18 may be provided with only one concave portion 34, and the first clamp portion 21 may be provided with only one convex portion 36.

  Moreover, a pair of convex part 36 may be provided in the hot water piping 18, and a pair of recessed part 34 may be provided in the 1st clamp part 21. FIG. The hot water pipe 18 may be provided with one convex portion and one concave portion, and the first clamp portion 21 may be provided with one convex portion and one concave portion. In short, what is necessary is just to be comprised as follows. The hot water pipe 18 is provided with a pipe side first fitting part and a pipe side second fitting part. The first clamp part 21 is provided with a clamp part first fitting part fitted to the pipe side first fitting part and a clamp side second fitting part fitted to the pipe side second fitting part. A clamp side 1st fitting part and a clamp side 2nd fitting part come to pinch | interpose the part in which the piping side 1st fitting part fitting part and the piping side 2nd fitting part were provided among the hot water piping 18. As shown in FIG. ing. At this time, the piping side first fitting portion is configured by one of the first concave portion 34a and the first convex portion 36a. A clamp side 1st fitting part is comprised by the other different from said one among the 1st recessed part 34a and the 1st convex part 36a. The pipe-side second fitting portion is configured by one of the second concave portion 34b and the second convex portion 36b. A clamp side 2nd fitting part is comprised by the other different from said one among the 2nd recessed part 34b and the 2nd recessed part 36b.

  In addition to the pair of convex portions 36 of the first clamp portion 21, the second clamp portion 22 may be provided with a pair of convex portions. Further, the shapes of the pair of concave portions 34 and the pair of convex portions 36 are not limited to the shapes shown in the drawing.

  (10) The present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope described in the claims, and includes various modifications and modifications within the equivalent range. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily indispensable except for the case where it is clearly indicated that the element is essential and the case where the element is clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. In each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., unless otherwise specified, or in principle limited to a specific material, shape, positional relationship, etc. The material, shape, positional relationship, etc. are not limited.

(Summary)
According to the 1st viewpoint shown by one part or all part of said each embodiment, an air-conditioning unit is provided with an air-conditioning case, a heat exchanger for heating, piping, a fixing | fixed part, and a seal part. In the state in which the air conditioning case is installed in the partition wall, the case through hole is disposed in at least a part of a region facing the partition wall through hole and the seal portion in a direction orthogonal to the partition wall on the partition wall side of the air conditioning case. In addition, a portion of the piping from the position of the case through hole to the position of the partition wall through hole is covered with the fixing portion and the seal portion.

  Moreover, according to the 2nd viewpoint, the case through-hole is arrange | positioned in at least one part of the area | region facing a partition through-hole in an air-conditioning case. The case through holes are preferably arranged in this way.

  Moreover, according to the 3rd viewpoint, the part taken out to the outer side of an air-conditioning case from case through-holes of piping is straight shape. According to this, the part taken out from the case through hole in the piping can be shortened. For this reason, compared with the case where this part is curving, size reduction of an air-conditioning unit is attained. Moreover, the assembly of the pipe and the fixed portion can be easily performed. Installation on the partition wall of the air conditioning unit becomes easy.

  Moreover, according to the 4th viewpoint, an air-conditioning case has a 1st case part and a 2nd case part located in the both sides which pinched | interposed the case through-hole. A 1st case part has a part of peripheral part surrounding a case through-hole. The second case part has another part of the peripheral part. The fixing portion has a first clamp portion and a second clamp portion that sandwich the pipe. The first clamp part extends from a part of the peripheral part of the first case part toward the outside of the air conditioning case. The 1st clamp part and the 1st case part are constituted by integral molding. The second clamp part extends from the other part of the peripheral edge of the second case part toward the outside of the air conditioning case. The 2nd clamp part and the 2nd case part are constituted by integral molding.

  According to this, the 1st clamp part and the 2nd clamp part are integral with an air-conditioning case. For this reason, compared with the case where the 1st clamp part and the 2nd clamp part are separate from an air-conditioning case, the number of parts which constitute an air-conditioning unit can be reduced.

  Moreover, according to the 5th viewpoint, the seal part is comprised with the sheet-like packing. The air conditioning unit includes a packing installation unit in which packing is installed and the packing is sandwiched between the air conditioning unit and the partition wall. The fixing portion includes a first restraining portion and a second restraining portion that sandwich and restrain both the first clamp portion and the second clamp portion in a state of sandwiching the pipe. The first restraining part, the second restraining part, and the packing installation part are configured as an integral molded product.

  According to this, the 1st control part and the 2nd control part, and the packing installation part are integral. For this reason, compared with the case where both are separate bodies, the number of parts which comprise an air-conditioning unit can be reduced. In other words, it is not necessary to add the holding part as a separate part.

DESCRIPTION OF SYMBOLS 12 Air conditioning case 126 Case through-hole 16 Heater core 18 Hot water piping 21 1st clamp part 22 2nd clamp part 24 Packing 26 Bracket 31 1st restraining rib 32 2nd restraining rib

Claims (5)

An air conditioning unit for a vehicle that blows out hot air toward the passenger compartment,
An air conditioning case (12) having an air passage (12a) formed therein;
A heat exchanger (16) for heating, which is arranged inside the air conditioning case and heats air by heat exchange with a heat medium;
One end (18a) and the other end (18b) opposite to the one end are connected to the heating heat exchanger inside the air conditioning case, and the other end including the other end is the end. A pipe (18) taken out of the air conditioning case and through which the heat medium flows;
A fixing portion (21, 22, 31, 32) for fixing the other end of the pipe to the air conditioning case;
The air conditioning case is installed in a partition wall (3) of the vehicle body,
The partition wall separates the vehicle interior space (4) on the side where the air-conditioning case is installed from the opposite side space (5) on the opposite side across the partition wall from the vehicle interior space. A partition wall through hole (3a) penetrating through
The wall (125) on the partition wall side of the air conditioning case has a case through hole (126) penetrating the wall,
The other end side of the pipe passes through the case through hole and the partition wall through hole, and is taken out to the opposite space.
The air conditioning unit includes a seal portion (24) that closes a gap between a peripheral portion surrounding the partition wall through hole and the pipe,
In the state where the air conditioning case is installed in the partition wall, the case through hole faces the partition wall through hole and the seal portion in a direction perpendicular to the partition wall on the partition wall side of the air conditioning case. An air conditioner that is disposed in at least a part of the region, and a portion (18e) of the piping from the position of the case through hole to the position of the partition wall through hole is covered with the fixing portion and the seal portion. unit.   The air conditioning unit according to claim 1, wherein the case through hole is disposed in at least a part of a region of the air conditioning case facing the partition wall through hole.   The air conditioning unit according to claim 1 or 2, wherein a portion (18c) of the pipe that is taken out from the case through hole to the outside of the air conditioning case has a straight shape. The air conditioning case has a first case portion (122) and a second case portion (124) located on both sides of the case through hole,
The first case part has a part (127a) of a peripheral part (127) surrounding the case through hole,
The second case part has another part (127b) of the peripheral edge part,
The fixed part has a first clamp part (21) and a second clamp part (22) sandwiching the pipe,
The first clamp part extends from the part of the peripheral part of the first case part toward the outside of the air conditioning case,
The first clamp part and the first case part are configured as an integral molded product,
The second clamp portion extends from the other part of the peripheral portion of the second case portion toward the outside of the air conditioning case,
The air conditioning unit according to any one of claims 1 to 3, wherein the second clamp part and the second case part are configured as an integral molded product. The seal part is composed of a sheet-like packing (24),
The air conditioning unit includes a packing installation part (265) in which the packing is installed and the packing is sandwiched between the partition wall,
The fixed portion includes a first restraining portion (31) and a second restraining portion (32) that sandwich and hold both the first clamp portion and the second clamp portion in a state of sandwiching the pipe,
5. The air conditioning unit according to claim 4, wherein the first holding part, the second holding part, and the packing installation part are configured as an integrally molded product.

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