JP5551860B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner characterized by a drainage section.

Conventionally, in a vehicle air conditioner used in an automobile or the like, a cooling heat exchanger is provided in a housing of the vehicle air conditioner, and cooling is performed by passing air through the cooling heat exchanger. The air that has been made can be obtained. In the vehicle air conditioner, when the air is cooled by the cooling heat exchanger, moisture contained in the air is condensed to generate condensed water. Since this condensed water accumulates in the inner bottom part of the housing of the vehicle air conditioner, for example, in Patent Document 1, a drain outlet is provided in the inner bottom part of the housing, and is formed so as to protrude from the drain outlet toward the vehicle body panel. Condensed water is drained from the drain pipe. Specifically, a drain pipe integrally formed with the housing protrudes downward in the front direction at the bottom of the housing, and the drain pipe is directly passed through the vehicle body panel at the front of the vehicle, thereby The condensate collected in the vehicle can be drained outside the passenger compartment.
JP 2004-98740 A

  By the way, in order to drain the condensed water in the vehicle air conditioner to the outside of the passenger compartment, a through hole provided in the vehicle body panel is formed on a part of the vehicle body panel located below the vehicle air conditioner due to layout problems. For example, it is formed in a part where the central axis of the through hole faces substantially horizontal, such as the vertical wall of the tunnel part of the floor panel, and condensed water is discharged from the through hole to the outside of the passenger compartment. It may be necessary to drain. In such a case, one end of the drain pipe is connected to the drain outlet at the bottom of the housing of the vehicle air conditioner, and a drain plug is provided on the other end of the drain pipe. It is conceivable that the water can be drained out of the passenger compartment.

  However, in the case of a structure in which the drain plug is fitted into the through hole, the drain plug may not be properly assembled to the floor panel or the like due to a manufacturing error of the drain plug, resulting in an insufficient fitting state. If it is anticipated, if this happens, the condensed water drained from the drain plug will flow into the passenger compartment, which will cause odor and rust.

  The present invention has been made in view of such points, and the purpose of the present invention is to fit a drain plug provided on a drain pipe extending from the bottom of a housing in a vehicle air conditioner to a vehicle body panel. A drainage structure in which condensed water is difficult to flow into the passenger compartment even if the drain plug is not sufficiently fitted.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a housing portion that houses a heat exchanger for cooling that cools the air passing therethrough. In the vehicle air conditioner configured to drain the condensed water condensed in the heat exchanger and accumulated in the bottom of the housing part from the drain port, the condensed water is disposed below the housing part to the outside of the passenger compartment. A drain pipe is provided, the upstream end of the drain pipe is connected to the drain port at the bottom of the housing part, and the downstream end of the drain pipe is a through-hole penetrating in the lateral direction provided in the vehicle body. A connection port portion that is inserted and fitted to the vehicle interior side from the vehicle interior side is formed, and the connection port portion extends in a direction intersecting with the insertion direction of the connection port portion into the through hole. When fitting the connection port portion into the through hole, The connecting port portion is passed through the through hole by inclining with respect to the insertion direction into the through hole, and the connecting port portion is extended downward with the connecting port portion fitted into the through hole. A hard-to-deform plate-like portion corresponding to a lower portion of the outer periphery of the vehicle compartment outer opening is integrally provided, and the plate-like portion has protrusions extending along the end portions at the ends located on both sides in the horizontal direction. And when the connection port portion is in an insufficiently fitted state with respect to the through hole, the connection port portion comes out of contact with the lower portion of the through hole on the outer periphery of the vehicle interior outside opening. The configuration is regulated.

  According to this configuration, the plate-like portion on the downstream side of the drainage pipe is provided at the peripheral edge of the opening located on the lower side in the vertical direction at the connection port portion, so that the connection port portion is fitted into the through hole of the vehicle body. When they are combined, they are located below the through holes. And since the plate-shaped part protrudes out of a vehicle interior, even if a fitting of a connection port part and a through-hole is inadequate, condensed water flows along a plate-shaped part and is drained out of a vehicle interior.

Further , according to this configuration, since the end portions located at both ends in the horizontal direction of the plate-like portion have the protrusions extending along the end portions, other objects come into contact with the plate-like portion. In addition, the ridge portion forms a space between the object and the opening of the connection port portion, and prevents the opening of the connection port portion from being blocked by another object.

In the second invention, the vehicular air conditioner according to the first invention is configured such that the protruding portion is a reinforcing portion of the plate-like portion.

  According to this configuration, since the protruding portion reinforces the plate-like portion, even if another object contacts the plate-like portion, the protruding portion prevents the plate-like portion from being deformed.

According to a third invention, in the vehicle air conditioner according to the first or second invention, the plate-like portion is arranged around the through hole in a state where the connection port portion is fitted into the through hole. It was formed along the wall, and both horizontal sides of the plate-shaped part were configured to curve outward from the passenger compartment.

  According to this configuration, when the plate-like portion is inserted from the vehicle interior side when the connection port portion is fitted into the through-hole, the plate-like portion is positioned along the wall around the through-hole of the vehicle body. When the plate-like portion is inserted, since both ends in the horizontal direction of the plate-like portion are curved, the end portion is unlikely to hit the periphery of the through hole, and the plate-like portion is difficult to contact the opening of the through hole.

According to a fourth invention, in the vehicle air conditioner according to any one of the first to third inventions, the plate-like portion is formed along the wall of the vehicle body, and the opening periphery of the connection port portion In this configuration, at least one or more engaging protrusions that are engaged with through holes provided in the vehicle body are formed.

  According to this configuration, when the connection port portion is assembled to the through hole, the plate-like portion is positioned along the wall of the vehicle body, and the engaging protrusion is engaged with the through hole.

  According to the first invention, since the condensed water flowing out from the opening of the connection port portion flows along the plate-like portion, the connection port portion is in an insufficiently fitted state in the through hole of the vehicle body. However, the plate-like portion is located outside the vehicle compartment, and the condensed water can be prevented from flowing into the vehicle compartment.

Further, a protrusion portion is formed on an end portion positioned in a horizontal direction at both ends of the plate-like portion, even if another object is in contact with the plate portion, the ridge portion, the object and the joint port openings A space is formed between the two and the condensate, and it can be avoided that the condensed water cannot be drained from the opening of the connection port portion to the outside of the passenger compartment.

According to the second invention, since the ridge portion reinforces the plate-like portion, the plate-like portion is deformed by contact with other objects, etc., closes the opening of the connection port portion, and condensate water is discharged. It is possible to avoid being unable to drain outside the room.

According to the third invention, since the end portions located on both sides in the horizontal direction of the plate-like portion are curved outward from the passenger compartment, the plate-like portion is inserted into the through-hole when the connection port portion is fitted into the through-hole. The connection port portion can be easily fitted to the vehicle body.

According to the fourth aspect of the invention, since the opening periphery of the connection port portion has the plate-like portion formed along the wall of the vehicle body and at least one engagement protrusion, the plate-like portion is engaged. It is possible to prevent the connection port portion from coming out of the through hole with the protruding portion.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a vehicle air conditioner 1 according to the present invention. The vehicle air conditioner 1 has a housing portion 10 that houses a cooling heat exchanger 2, a heating heat exchanger (not shown), various dampers (not shown), and the like. Are attached to a dash panel B1 extending in the vertical direction and the vehicle width direction. The vehicle air conditioner 1 mixes air cooled by passing through the heat exchanger 2 for cooling and air heated by passing through the heat exchanger for heating with various dampers in the housing portion 10, The temperature inside the vehicle compartment can be adjusted by blowing air into the vehicle compartment.

  Further, in the vehicle air conditioner 1, when air is passed through the cooling heat exchanger 2 in order to cool the air, moisture contained in the air is condensed to produce condensed water, and the cooling heat exchanger is generated. The condensed water falls from 2 to the bottom of the housing part 10. Therefore, in order to drain this condensed water to the outside of the passenger compartment, a drain outlet 11 is provided at the bottom of the housing portion 10, and is connected to the drain outlet 11 below the housing portion 10 to the floor panel B 2 in the vehicle body. The drainage part 3 connected is provided. The floor panel B2 has a bulging portion b1 whose center portion in the vehicle width direction swells upward, and a through hole H1 (shown in FIG. 4) penetrating in the lateral direction is formed in a surface located on the right side of the bulging portion b1. And the drainage part 3 is connected to this through-hole H1, and condensed water is drained out of the passenger compartment. Unless otherwise specified in the following description, “front” and “rear” mean “front in the vehicle front-rear direction” and “rear in the vehicle front-rear direction”, respectively, and “left” and “right” It means “vehicle width direction left” and “vehicle width direction right”.

  Although not shown in detail, the cooling heat exchanger 2 is a so-called evaporator. For example, a tube-and-fin type in which a large number of aluminum alloy tubes and heat transfer fins are alternately arranged and integrated. The tube is arranged vertically so that the tube extends in the up-down direction in front of the housing portion 10.

  The bottom part of the housing part 10 has a central part in the front-rear direction curved downward, and the condensed water generated by the cooling heat exchanger 2 is easily collected in the central part in the front-rear direction at the bottom part of the housing part 10. And the drain port 11 is provided in the lowest end part in the bottom part of this housing part 10. As shown in FIG.

  As shown in FIG. 1, the drainage part 3 is composed of a connection port part 4, a drainage pipe 5, and a joint part 9. As shown in FIG. 4, the connection port portion 4 is fitted into a through hole H1 provided in the floor panel B2 (shown in FIG. 1) of the vehicle body, and includes a main body portion 6, a projecting edge portion 7, The plate-shaped portion 8 is configured to be inserted and fitted into the through hole H1 from the vehicle interior side to the vehicle interior side.

  As shown in FIGS. 2 to 4, the main body 6 is a pipe in which two substantially cylindrical members are joined in an L shape. As shown in FIG. 2, a communication hole 63 that communicates from the upstream end to the opening 62 d that opens to the downstream end is formed inside the main body 6 so that the condensed water can be drained. A drain pipe 5 is connected to the upstream side of the main body 6.

  The main body 6 has a shape in which the cross-sectional shape gradually decreases toward the downstream side, and a first protrusion 62a that protrudes upward on the outer periphery of the downstream portion on the outer side in the radial direction of the cross section of the main body 6. And a second protrusion 62b and a third protrusion 62c projecting in the horizontal direction.

  The first protrusion 62a is a member that protrudes outward in the radial direction, and a surface located on the downstream side is inclined toward the upstream side toward the tip. Similarly, the second projecting portion 62b and the third projecting portion 62c are members that project radially outward and the surface located on the downstream side is inclined toward the upstream side toward the tip.

  On the downstream side of the main body portion 6, a protruding edge portion 7 is formed on the upstream side of the projecting portions 62 a to 62 c so as to project in a substantially annular shape outward in the radial direction of the cross section of the main body portion 6. One side of the projecting edge portion 7 in the horizontal direction protrudes in a substantially rectangular shape. A substantially annular sealing member 71 is provided on a surface located on the downstream side of the projecting edge portion 7, and when the connection port portion 4 is fitted into the through hole H1, the first projecting portion 62a and The floor panel B2 is sandwiched between the seal member 71, and similarly, the floor panel B2 is sandwiched between the second protrusion 62b and the seal member 71, and between the third protrusion 62c and the seal member 71. Thus, the connection port 4 is adapted to fit into the through hole H1.

  The lower part of the peripheral edge of the opening 62d in the main body 6 extends downward so as to correspond to the lower peripheral edge of the vehicle interior outside opening of the through hole H1 in a state where the connection port 4 is fitted in the through hole H1. The hardly deformable plate-like portion 8 is integrally provided. That is, the plate-like portion 8 is a plate-like member extending in the horizontal direction, the horizontal central portion is gently curved toward the vehicle interior side, and both horizontal end portions are gently curved toward the vehicle interior side, In a state where the connection port 4 is fitted in the through hole H1, the wall is formed around the through hole H1. The lower end portion of the plate-like portion 8 is positioned substantially equal to the lower end portion of the projecting edge portion 7, and the horizontal width of the plate-like portion 8 is substantially equal to the outer peripheral diameter of the downstream portion of the main body portion 6. It has become. One side of the plate-like part 8 projects in the downstream side of the main body part 6, extends from one side lower part of the opening 62 d to one side along the upper end of the plate-like part 8, and One side ridge 81 extending downward along the side end is formed. The one side protrusion 81 protrudes further downstream than the downstream end of the main body 6. Further, on the other side of the plate-like portion 8, it projects to the downstream side of the main body portion 6, extends to the other side along the upper end of the plate-like portion 8 from the other lower side of the opening 62 d, and the other side of the plate-like portion 8. The other side protrusion part 82 extended below along an edge part is formed. Similar to the one-side protruding portion 81, the other-side protruding portion 82 protrudes further downstream than the downstream side of the main body portion 6. The plate-like portion 8 is reinforced by the one side protrusion 81 and the other side protrusion 82.

  As shown in FIG. 1, the joint portion 9 has a substantially cylindrical shape, and is arranged on the bottom portion of the housing portion 10 so that the central axis is in the left-right direction. A drain hole 9 a is formed inside the joint portion 9 and is connected to the drain port 11.

  The drain pipe 5 is composed of a hose part 51 and a hose band part 52. The upstream end of the hose part 51 is inserted into the joint part 9, and the downstream end of the hose part 51 is connected to the upstream end of the main body part 6 in the connection port part 4.

  The hose band portion 52 is a member that tightens the outer periphery of the hose portion 51 so that the hose portion 51 does not come out of the joint portion 9, and has a substantially circular cross section extending in the center line direction of the hose portion 51.

  Next, attachment of the connection port 4 to the floor panel B2 will be described. First, as shown in FIG. 5, when fitting the connection port 4 into the through hole H1, the connection port 4 is inclined so that the opening 62d of the connection port 4 faces upward, The plate-like part 8 of the connection port part 4 is inserted. At this time, since both ends in the horizontal direction of the plate-like portion 8 are gently curved, the plate-like portion 8 can be smoothly passed through the through hole H1. And the connection port part 4 is rotated so that the opening part 62d of the connection port part 4 may turn horizontally, inserting the plate-shaped part 8 in the through-hole H1. Thereafter, by pushing the connection port 4 into the through hole H1, the floor panel B2 is positioned between the first protrusion 62a and the seal member 71. Similarly, the second protrusion 62b, the seal member 71, The floor panel B2 is positioned between the third protrusion 62c and the seal member 71, and the connection port 4 is fitted into the through hole H1 of the floor panel B2.

  Next, drainage of condensed water generated in the vehicle air conditioner 1 will be described. As shown in FIG. 1, when air is passed through the cooling heat exchanger 2 accommodated in the housing portion 10, condensed water is generated due to condensation of moisture contained in the air, and the cooling heat exchanger Condensate falls from 2. The condensed water dropped from the cooling heat exchanger 2 gathers at the bottom of the housing part 10 and is drained from a drain port 11 provided at the bottom of the housing part 10. Condensed water passes through the joint portion 9 connected to the drain port 11 and the hose portion 51, passes through the communication hole 63 of the connection port portion 4 connected to the hose portion 51, and drains from the opening 62 d to the outside of the vehicle compartment. Is done. At this time, since the plate-like portion 8 is formed at the lower periphery of the opening 62d, the condensed water flows on the plate-like portion 8 and is drained. Therefore, as shown in FIG. 6, when the fitting between the connection port 4 and the through hole H1 is insufficient, the floor panel B2 is located between the protrusions 62a to 62c and the seal member 71. Even if it is a case between the plate-shaped part 8 and the projection parts 62a-62c, the plate-shaped part 8 contacts the vehicle compartment outer side opening periphery lower part of the said through-hole H1, and the said connection port part 4 is. Since it is located outside the vehicle compartment while restricting the escape from the through hole H1, the condensed water flows on the plate-like portion 8 from the opening 62d, flows out of the vehicle compartment, and does not flow into the vehicle interior.

  As mentioned above, according to the vehicle air conditioner 1 by embodiment, since the plate-shaped part 8 is provided in the peripheral lower part of the opening part 62d in the connection port part 4, the connection port part 4 is fitted to the through-hole H1. When combined, the plate-like portion 8 is located below the through hole H1. And even if the fitting between the connection port portion 4 and the through hole H1 is insufficient, if the plate-like portion 8 is located outside the vehicle compartment, the condensed water is drained outside the vehicle compartment through the plate-like portion 8. It has become so.

  In addition, since one side protrusion 81 and another side protrusion 82 are formed at the ends of the plate-like part 8 located at both ends in the horizontal direction, other objects come into contact with the plate-like part 8. Even so, a space is formed between the object and the opening 62 d of the connection port 4 by the one-side protrusion 81 and the other-side protrusion 82, and condensed water is discharged from the opening 62 d of the connection port 4. It can be avoided that the vehicle cannot be drained out of the passenger compartment.

  Further, since the one-side ridge 81 and the other-side ridge 82 reinforce the plate-like portion 8, even if another object contacts the plate-like portion 8, the plate-like portion 8 is deformed. It has become difficult.

  Further, since both ends of the plate-like portion 8 are curved outward in the vehicle compartment, when the connection port portion 4 is fitted into the through-hole H1 provided in the vehicle body, the plate-like portion 8 is changed to the through-hole H1. It is easy to insert and the connection port 4 can be easily fitted to the vehicle body.

  Note that, as in Modification 1 shown in FIG. 7, the protrusion formed on the outer periphery of the downstream portion in the main body 6 may be the first protrusion 62a alone. In this case, when the connection port 4 is inserted into the through hole H1 (shown in FIG. 4), the floor panel B2 is fitted between the first protrusion 62a and the seal member 71, By allowing the floor panel B2 to be positioned between the sealing member 71 and the sealing member 71, the connection port portion 4 can be prevented from coming out of the through hole H1.

  As described above, the vehicle air conditioner according to the present invention is suitable for installation in an automobile, for example.

1 is a perspective view of a vehicle air conditioner according to an embodiment. It is a perspective view of a connection port part. It is a front view of a connection port part. It is a side view of a connection port part. It is a figure at the time of inserting a connection port part in a through-hole. It is the figure which showed the state in which fitting with a connection port part and a through-hole is inadequate. FIG. 6 is a view corresponding to FIG. 3 according to Modification 1 of the embodiment.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 10 Housing part 11 Drainage port 2 Cooling heat exchanger 3 Drainage part 4 Connection port part 5 Drain pipe 62a 1st projection part (engagement projection part)
62b Second projection (engagement projection)
62c 3rd protrusion (engagement protrusion)
8 Plate-like part 81 One side ridge part (ridge part, reinforcement part)
82 Other side ridges (ridges, reinforcements)
H1 Through hole B1 Dash panel B2 Floor panel

Claims (4)

A housing portion that houses a heat exchanger for cooling that cools air passing therethrough;
The housing part is formed with a drain outlet at the bottom,
In the vehicle air conditioner configured to drain the condensed water condensed in the cooling heat exchanger and accumulated in the bottom of the housing part from the drain port,
Below the housing part, a drain pipe for guiding condensed water to the outside of the passenger compartment is provided,
The upstream end of the drain pipe is connected to the drain port at the bottom of the housing part, and the downstream end of the drain pipe is inserted into a through hole provided in the vehicle body in the lateral direction from the vehicle interior side to the vehicle exterior side. A connection port portion is formed to be inserted and fitted into the
In the opening periphery of the connection port portion, the connection port portion extends in a direction crossing the insertion direction of the connection port portion into the through hole, and when the connection port portion is fitted into the through hole, the connection port portion is Inclining with respect to the direction of insertion into the through hole, it passes through the through hole, and extends downward in the state where the connection port portion is fitted in the through hole. A hard-deformable plate-like part corresponding to the lower part is provided integrally,
The plate-like portion has protrusions extending along the end portions at the ends located on both sides in the horizontal direction, and the connection port portion is in an insufficiently fitted state with respect to the through hole. The vehicle air conditioner is characterized in that the connection port portion is prevented from coming out of the through hole by contacting a lower peripheral edge of the through hole of the vehicle interior outside opening. The vehicle air conditioner according to claim 1 ,
The vehicular air conditioning apparatus, wherein the protrusion is a reinforcing part of the plate-like part. The vehicle air conditioner according to claim 1 or 2 ,
The plate-like portion is formed so as to be along the wall around the through hole in a state where the connection port portion is fitted in the through hole.
The vehicle air conditioner characterized in that both sides of the plate-like portion in the horizontal direction are curved outward from the passenger compartment. The vehicle air conditioner according to any one of claims 1 to 3 ,
The plate-like portion is formed along the wall around the through hole of the vehicle body,
The vehicle air conditioner is characterized in that at least one engagement protrusion that engages with a through hole provided in the vehicle body is formed on an opening periphery of the connection port.

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