JP2004249920A - Mounting structure of vehicular air conditioning duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of an air conditioning duct 80 advantageous in securing sealability by restraining fluctuation in mutual relative position by connecting an air conditioning duct 80 after surely positioning it in an air conditioning unit 2 even when it is unable to visually confirm a front end opening 64 (a duct connecting port) of the air conditioning unit 2. <P>SOLUTION: In this mounting structure of a vehicular air conditioning duct, a guide groove 83 arranged in the air conditioning duct 80 is fitted to a guide projection 72 of the air conditioning unit 2, and while visually confirming that the guide groove 83 abuts on the guide projection 72 via a finder hole 84, the air conditioning duct 80 is slid in the connecting direction of the air conditioning duct 80 to the front end opening 64 of the air conditioning unit 2. A connecting part 81 of the air conditioning duct 80 is connected to the front end opening 64 of the air conditioning unit 2, and the air conditioning duct 80 and the air conditioning unit 2 are fastened by a fastening part by adjusting a hole position of a fastening hole 85 of the air conditioning duct 80 and a fixing hole 73 of the air conditioning unit 2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mounting structure for a vehicle air conditioning duct.
[0002]
[Prior art]
As an attachment structure for connecting ducts of a vehicle air conditioner, a guide piece is attached to a side surface of one of the ducts, and the tip of the guide piece extends forward from a duct end face (duct connection port). There is known a device in which a gap is formed between the duct and a side of the duct, and the side of the other duct is brought into contact with a guide piece to guide the duct to a duct connection port (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-163047 A
[Problems to be solved by the invention]
However, depending on the arrangement of peripheral parts of the vehicle air conditioner, the duct connection port and the guide piece provided on the side surface of the duct connection port may be hidden and invisible, and it may be difficult to position the ducts. is there. In addition, the guide piece can regulate the relative position of the ducts in the left-right direction, but cannot regulate the relative position in the vertical direction. Therefore, in order to regulate the relative position in the vertical direction, it is necessary to provide a similar guide piece on the lower surface of the duct, which causes a problem that the number of parts increases and the cost increases.
[0005]
According to the present invention, even when the duct connection port cannot be visually recognized, the air-conditioning duct is securely positioned and connected to the air-conditioning apparatus even if the duct connection port cannot be visually recognized, so that the relative positions of the air-conditioning ducts vary. Another object of the present invention is to provide a vehicle air-conditioning duct mounting structure that is advantageous in suppressing the pressure and ensuring the sealing performance.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a mounting structure of a vehicle air-conditioning duct for mounting an air-conditioning duct for supplying air-conditioning air to a vehicle interior at a duct connection port of a vehicle air-conditioning device,
The air conditioner and the air conditioning duct have surfaces facing each other on the near side in the connection direction of the air conditioning duct to the duct connection port,
A guide ridge is formed on one of the facing surfaces of the air conditioner and the air conditioning duct, and the other is slidably fitted to the guide ridge and the connection portion of the air conditioning duct is connected to the duct connection port. A guide groove for guiding is formed.
[0007]
Therefore, according to the present invention, a guide ridge is formed on one of the air conditioner and the air conditioning duct, and the other of the guide ridge is slidably fitted to the guide ridge and the connecting portion of the air conditioning duct is connected to the guide ridge. Since the guide groove for guiding the duct connection port is formed, even when the duct connection port is not visible, the connection portion of the air conditioning duct can be guided and connected to the duct connection port, This is advantageous in securing the sealing performance by suppressing the variation in the relative positions of each other, and can increase the working efficiency.
[0008]
The invention according to claim 2 is a mounting structure of the vehicle air-conditioning duct according to claim 1,
The air conditioning duct has a duct trunk having the connection part connected to the duct connection port at an upstream end thereof, and two duct branches branched left and right from a downstream end of the duct trunk.
One of the guide ridge and the guide groove is formed in a duct trunk of the air conditioning duct, and extends in a direction passing through a branch portion where the left and right duct branches are separated,
The branch portion of the air conditioning duct has a connecting portion that connects and reinforces the left and right duct branches, and the connecting portion has a peep for visually confirming the other of the guide ridge and the guide groove. It is characterized in that a hole is formed.
[0009]
Therefore, according to the present invention, the connecting portion of the air conditioning duct has a peephole for visually confirming the other of the guide ridge and the guide groove formed in the air conditioner, The other of the guide ridge and the guide groove can be confirmed through the peep hole, and the guide ridge can be securely fitted into the guide groove.
[0010]
The invention according to claim 3 is the mounting structure of the air conditioning duct for a vehicle according to claim 1 or 2,
The air conditioner and the air conditioning duct are characterized in that the air conditioner and the air conditioning duct are provided with a fastening portion for fastening each other with a fastening component while being connected to each other.
[0011]
Therefore, according to the present invention, since the air conditioner and the air conditioning duct are connected to each other and fastened to each other with the fastening parts, variations in the relative positions of the air conditioners and the air conditioning ducts can be suppressed, which is advantageous in securing the sealing performance. .
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
As shown in FIG. 1, a vehicle air conditioner 1 according to an embodiment of the present invention is disposed inside an instrument panel 60 located at the forefront in a passenger compartment of an automobile (vehicle). A unit 2 and a wind guide unit 3 are provided.
[0014]
The instrument panel 60 is provided with a defroster duct 63 for a front window, and a ventilator 62 for blowing air-conditioning air to the center of the passenger compartment, the driver's seat side and the passenger's seat side. The air-conditioning air can be sent also to the feet under the feet and the feet of the rear passengers. The vehicle of the present embodiment is a so-called left-hand drive vehicle in which a driver's seat and a passenger seat are provided on the left and right sides of the vehicle body, respectively.
[0015]
<The passage configuration of the air conditioning unit 2>
As shown in FIGS. 2 and 3, the air-conditioning case 4 of the air-conditioning unit 2 includes a main body case 4A into which air is introduced from the air guide unit 3 and a drain connected to a lower opening of the main body case 4A. A case part 4B and a duct assembly case part 4C connected to the upper opening of the drain case part 4B are provided. The main body case portion 4A is configured by combining left and right case members 4a and 4b, the drain case portion 4B is configured by one case member 75, and the duct assembly case portion 4C is configured by combining left and right case members 70a and 70b. It is constituted by.
[0016]
The main body case portion 4A includes a fan housing 22 forming a cylindrical space, an air feed passage 21 extending below the fan housing 22, a cool air passage 30 extending upward following the air feed passage 21, and a cold air passage. 30 and an air mix passage 35 extending upward. A blower fan 23 is accommodated in the fan housing 22 with its axis centered in the vehicle width direction, and an air mix damper 34 for switching a mixing ratio of cold air and hot air and an air blowing direction of conditioned air are switched in an air mixing passage 35. Switching doors 39, 40, 42 are provided.
[0017]
The drain case portion 4B has a bottom portion formed in a drain receiving portion 56 that receives the drain, and the upper surface is one step higher on the front side of the vehicle body than on the rear side, as shown in FIG. The main body case section 4A is connected to an opening on the upper front side of the drain case section 4B, and a lower end opening section of the duct assembly case section 4C is connected to an opening on the upper rear side of the drain case 4B.
[0018]
An evaporator (cooling heat exchanger) 5 vertically extends the air inflow surface between a portion between the air feed passage 21 and the cool air passage 30 in the main body case portion 4A and a drain receiving portion 56 of the drain case portion 4B. And is arranged toward the rear of the vehicle body. An air filter 29 is provided on the near side of the evaporator 5 (the front side of the vehicle body), and an air volume adjusting device 20 is provided on the near side of the filter 29.
[0019]
The upper portion on the rear side where the upper surface of the drain case portion 4B is raised one step is formed in a heater core housing portion 8 in which a heater core (heating heat exchanger) 6 is housed with its air inflow surface substantially horizontal and downward. ing. The duct assembly case 4C is located above the heater core 6 and forms a hot air passage 31. The partition wall 7 for distributing the air that has passed through the evaporator 5 to the cold air passage 30 and the drain case section 4B (the heater core 6) side is formed in the main body case section 4A by extending the wall surface in the vertical direction.
[0020]
A lower portion of the air mix passage 35 of the main body case portion 4A is formed at a junction of the cold air passage 30 and the hot air passage 31, and an air mix damper 34 is disposed at the junction. The air mix damper 34 is formed by connecting two blades in a “<” shape, and has a center portion formed by a support shaft extending horizontally above the partition wall 7 in the vehicle width direction. 4A rotatably supported. The junction is divided into an opening 32 on the side of the cool air passage 30 and an opening 33 on the side of the warm air passage 31 by the support shaft support portion, and each of the openings 32, 33 is connected to the air mix damper 34. Each wing plate opens and closes.
[0021]
The upper part of the air mix passage 35 is branched into a rear passage having a vent outlet 36 and a front passage having a defrost outlet 37, and switching doors 39 and 40 are arranged in each passage so that the passage opening area can be adjusted. Is established. In addition, a passage 38 extending from a lower portion of the air mix passage 35 toward the rear of the vehicle body is branched. The vent outlet 36 is connected to the ventilator 62, the defrost outlet 37 is connected to the defroster duct 63, and the side opening 65 of the branch passage 38 is connected to the ventilator for the feet of the front passenger by a duct (not shown). Further, the front end opening 64 of the branch passage 38 is connected to a ventilator for the feet of the rear passengers by a vehicle air-conditioning duct 80 shown in FIG.
[0022]
<Air flow in air conditioning unit 2>
Therefore, in the passage configuration of the air conditioning unit 2, the air sent from the fan housing 22 to the air feed passage 21 by the blower fan 23 passes through the air filter 29 in a state where the air volume is adjusted by the air volume adjusting device 20. Dust is collected and further passes through the evaporator 5 to become cool air. The cool air is branched into the cool air passage 30 and the heater core 6 (hot air passage 31) in accordance with the distribution ratio of the air flow determined by the rotation position of the air mix damper 34. By passing through 6, the air becomes warm air.
[0023]
Then, the cool air from the cool air passage 30 and the warm air from the warm air passage 31 merge in the air mix passage 35 to become conditioned air at a required temperature, and the air is adjusted according to the opening degree of each of the switching doors 39, 40, 42. A quantity of conditioned air is supplied from the vent outlet 36, the defrost outlet 37, or the openings 64 and 65 of the branch passage 38 to the passenger compartment via a duct, a ventilator, and the like.
[0024]
<Mounting structure of air conditioning duct 80>
As shown in FIGS. 4A and 5, the vehicle air-conditioning duct 80 includes a duct trunk portion 80 a having a connection portion 81 at an upstream end thereof connected to the front end opening 64 (duct connection port) of the air-conditioning unit 2. And two duct branch portions 80b, 80b branched right and left from the downstream end of the duct trunk portion 80a, and a connecting portion 80c for connecting and reinforcing the two duct branch portions 80b, 80b. As shown in FIG. 6, a step portion 82 having a substantially concave cross section is formed on the lower surface of the duct trunk portion 80 a and extends in a direction passing through a branch portion 80 d where the left and right duct branch portions 80 b and 80 b are separated. At the center of the concave surface of the step portion 82, a guide groove 83 having a substantially triangular cross section is formed which extends in the same direction as the step portion 82 and whose opening gradually widens outward. Here, the guide groove 83 extends longer than a guide protrusion 72 described later, and is slidably fitted to the guide protrusion 72 to connect the connection portion 81 of the air conditioning duct 80 to the air conditioning unit. The second guide opening 64 is guided. Further, a peep hole 84 for visually recognizing a guide ridge 72 described later is provided in the connecting portion 80c in the vicinity of the branch portion 80d, and the air conditioning duct 80 is provided downstream of the peep hole 84. A fastening hole 85 (fastening portion) is provided for fastening the air conditioning unit 2 and the air conditioning unit 2 to each other with a fastening component in a state of being connected to each other.
[0025]
The duct assembly case 4C has a guide ridge 72 projecting from the rear end of the vehicle body of the duct assembly case 4C and extending in the direction in which the air conditioning duct 80 is connected to the front end opening 64 of the air conditioning unit 2. Corresponding to the fastening holes 85, fixing holes 73 for fastening the air conditioning duct 80 to the air conditioning unit 2 are provided.
[0026]
Next, a procedure for connecting the vehicle air conditioning duct 80 to the air conditioning unit 2 will be described. First, the guide groove 83 provided in the air conditioning duct 80 is fitted to the guide protrusion 72 of the air conditioning unit 2, and it is seen that the guide groove 83 and the guide protrusion 72 are in contact. While visually recognizing through the hole 84, the air conditioning duct 80 is slid in the connection direction of the air conditioning duct 80 with respect to the tip opening 64 of the air conditioning unit 2, and the connection portion 81 of the air conditioning duct 80 is moved to the tip opening 64 of the air conditioning unit 2. To be connected. Then, the hole positions of the fastening holes 85 of the air conditioning duct 80 and the fixing holes 73 of the air conditioning unit 2 are aligned, and the air conditioning duct 80 and the air conditioning unit 2 are fastened by fastening components. As described above, as shown in FIG. 4B, the air conditioning duct 80 can be attached to the air conditioning unit 2 and the seal between the air conditioning duct 80 and the air conditioning unit 2 can be reduced by suppressing the variation in the relative positions of each other. This is advantageous in securing the performance.
[0027]
<About the evaporator 5, heater core 6, and air filter 29>
As shown in FIG. 2, the evaporator 5 is formed by stacking a large number of tubes formed of a thin metal plate such as aluminum so as to extend in the same direction, and interposing corrugated fins between adjacent tubes. The inflow surface is formed in a rectangular shape. The evaporator 5 forms a refrigeration cycle together with a compressor, a condenser, and the like disposed in an engine room of an automobile. A refrigerant circulating in the refrigeration cycle flows through the tubes of the evaporator 5 and passes through the evaporator 5. It is designed to cool the air.
[0028]
The heater core 6 is formed by laminating a large number of tubes formed of a thin metal plate such as aluminum so as to extend in the same direction, and interposing corrugated fins between adjacent tubes. The air inflow surface is formed in a rectangular shape. Have been. As shown in FIG. 3, the heater core 6 is connected to a water jacket of an automobile engine by two heater pipes 6a and 6b. The heater pipes 6a and 6b are provided from the right side of the vehicle width of the heater core 6 and extend substantially in front of the vehicle body substantially parallel to the heater core 6. The high-temperature cooling water circulating between the water jacket and the heater core 6 flows through the tube of the heater core 6 and exchanges heat with the air passing through the heater core 6 to heat the air. I have. The heater pipes 6a and 6b of the heater core 6 are covered by a heater cover 71 projecting downward from the lower right end of the duct assembly case 4C in the vehicle width direction.
[0029]
The air filter 29 is formed by an upper air filter 29a and a lower air filter 29b, and the upper air filter 29a has a larger airflow resistance than the lower air filter 29b.
[0030]
<About drain receiver 56>
The drain receiving portion 56 includes a first inclined portion 56a which is inclined so as to gradually decrease from the vehicle body front side (the right side in FIG. 2) to the vehicle body rear side (the left side in the figure), and an end of the first inclined portion 56a. And a second inclined portion 56b that is inclined so as to gradually increase toward the rear side of the vehicle body. The drain pipe 51 is connected to the lowest part of the boundary between the first inclined part 56a and the second inclined part 56b.
[0031]
On the first inclined portion 56a of the drain case portion 4B, a filter support portion 54 for supporting the air filter 29 on the front side (rear side of the vehicle body) of the evaporator 5 and an evaporator support portion 55 for supporting a lower end portion of the evaporator 5 are provided. Is formed.
[0032]
The filter support portion 54 has a substantially M-shaped cross section and extends along the entire length of the drain case portion 4B in the vehicle width direction. The lower end of the air filter 29 is supported at a concave portion at the center of the cross section of the support portion 54. The upper end of the air filter 29 is held by the main body case 4A.
[0033]
The evaporator support portion 55 includes a side surface of the filter support portion 54 on the rear side of the vehicle body, a ridge 55a extending in a vehicle width direction at a portion separated from the filter support portion 54 to the rear of the vehicle, a filter support portion 54 and a ridge 55a. And a ridge 55b extending similarly in the vehicle width direction. That is, the lower end of the evaporator 5 is fitted into a concave portion formed by the filter supporting portion 54 and the ridge 55a, and the lower surface is supported by the ridge 55b. On the other hand, the upper end of the evaporator 5 is held in a downwardly opened concave portion formed in a portion between the air feed passage 21 and the cool air passage 30 in the main body case portion 4A.
[0034]
Notches are formed in the protrusions 55a and 55b at intervals in the vehicle width direction, and condensed water dripping from the evaporator 5 passes through the notches through the first inclined portion 56a toward the drain pipe 51. It is flowing.
[0035]
The drain receiving portion 56 is inclined so as to gradually decrease from the left side of the vehicle body to the right side of the vehicle body as shown in FIGS. Connected from.
[0036]
Further, the evaporator 5 is connected to respective ends of cooler pipes 5a and 5b extending forward of the vehicle body as shown in FIG. 9 to form the refrigeration cycle.
[0037]
<About the air guide unit>
As shown in FIG. 7, the wind guide unit 3 includes a wind guide case 10 in which two members (case members 10 a and 10 b) which are vertically divided into left and right portions at a substantially central portion in a vehicle width direction are engaged. , And an inside / outside air switching damper 14.
[0038]
As shown in FIG. 7, a rectangular outside air intake 11 for taking in air outside the vehicle compartment through a vehicle-side cowl is formed on the upper front surface of the case 10 as shown in FIG. A rectangular inside air inlet 12 for taking in the air in the vehicle compartment is formed in the upper surface of the case 10. A grill 13 is formed integrally with the air guide case 10 at each of the intakes 11 and 12.
[0039]
The inside / outside air switching damper 14 has a rectangular shape and is provided inside the wind guide case 10, and one side thereof is rotated by an axis extending between the intakes 11 and 12 at the upper end of the wind guide case 10 in the vehicle width direction. It is freely supported. Then, as shown in FIG. 9, the damper 14 is in a state in which one of the intakes 11 and 12 is closed by an actuator 15 provided on a side surface of the air guide case 10 (the other is closed). Open). The actuator 15 is configured to operate in response to a signal from an air-conditioning control unit (not shown) provided on the instrument panel 60.
[0040]
The driving method of the damper 14 does not need to be limited to the actuator 15, and any driving method may be used.
[0041]
<About the blower fan 23>
As shown in FIG. 10, the blower fan 23 is a centrifugal multi-blade fan, the rotation axis of which is arranged in the vehicle width direction, is disposed in the fan housing 22, and the blower fan 23 has a fan drive motor 24. Are combined. The blower fan 23 and the drive motor 24 are inserted from the side of the fan housing 22 on which the wind guide case 10 is mounted, and the mounting ring 25 is engaged with a support portion of the drive motor 24 projecting to the opposite side of the fan housing 22, so that the fan housing 22. After the blower fan 23 and the drive motor 24 are attached, the convex protrusion provided on the periphery of the fan insertion opening of the fan housing 22 engages with the concave groove provided on one side of the air packing 26. By engaging the convex protrusion provided on the other side surface of 26 with the concave groove provided on the periphery of the opening of the air guide case 10, the air guide case 10 can be sealed with the fan housing 22 while ensuring the hermeticity. Are united.
[0042]
As shown in FIG. 11, one end of an air hose 27 for cooling the motor is connected to the drive motor 24. The other end of the air hose 27 is connected to and attached to the fan housing 22 so that air in the fan housing 22 can be taken in and sent to the drive motor 24. In the middle of the air hose 27, a water intrusion prevention portion 27a formed in an inverted U shape is provided so that water in the fan housing 22 does not enter the drive motor 24.
[0043]
<Others>
The air volume adjusting device 20 is coupled to a case lid 19 (shown in FIG. 9) that closes an insertion port for inserting the evaporator 5 and the air filter 29 into the drain case 75.
[0044]
The blow-out direction switching doors 39, 40, 42 are operated by a link mechanism disposed on the side wall of the air conditioning case 4.
[0045]
【The invention's effect】
Therefore, according to the first aspect of the invention, a guide ridge is formed on one of the air conditioner and the air conditioning duct, and the other is slidably fitted to the guide ridge and connected to the air conditioning duct. Since the guide groove for guiding the portion to the duct connection port of the air conditioner is formed, even when the duct connection port is not visible, the connection section of the air conditioning duct is guided to the duct connection port. Connection can be made, which is advantageous in suppressing variations in the relative positions of each other and ensuring sealing performance, and can also increase work efficiency.
[0046]
According to the second aspect of the present invention, in the first aspect, a peephole for visually recognizing one of the guide ridge and the guide groove formed in the air conditioner in the connection portion of the air conditioning duct. Is formed, the one of the guide ridge and the guide groove can be confirmed through the viewing hole, and the guide ridge can be securely fitted into the guide groove. it can.
[0047]
According to the third aspect of the present invention, in the first or second aspect, since the air conditioner and the air conditioning duct are connected to each other and fastened to each other with a fastening part, it is possible to suppress variations in the relative positions of the air conditioner and the air conditioner duct. This is advantageous in securing the performance.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an arrangement state of a vehicle air conditioner according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing the internal structure of the air conditioning unit according to the embodiment of the present invention.
FIG. 3 is an exploded perspective view showing the air conditioning unit partially omitted.
FIG. 4A is a perspective view showing a state before an air conditioning duct is attached to the air conditioning unit.
(B) The perspective view which shows the state after attaching the air conditioning duct to the air conditioning unit.
FIG. 5 is a perspective view when the air conditioning duct is viewed from below.
FIG. 6 is a longitudinal sectional view showing the vicinity of a guide groove of the air conditioning duct.
FIG. 7 is a front view of the air conditioner (view from the front of the vehicle body).
FIG. 8 is a rear view of the air conditioner.
FIG. 9 is a right side view of the air conditioner.
FIG. 10 is an exploded perspective view showing a blower fan portion of the air conditioning unit.
FIG. 11 is a left side view of the air conditioner.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Air conditioning unit 4 Air conditioning case 4A Main body case 4B Drain case 4C Duct assembly case 5 Evaporator (cooling heat exchanger)
6. Heater core (heat exchanger for heating)
8 Housing portion 64 Tip opening 72 Guide protrusion 73 Fixing hole 80 Vehicle air-conditioning duct 80a Duct trunk 80b Duct branch 80c Connecting portion 80d Branch 81 Connecting portion 82 Step 83 Guide groove 84 Viewing hole 85 Fastening hole

Claims (3)

Attachment structure of a vehicle air-conditioning duct for attaching an air-conditioning duct for supplying air-conditioning air to the vehicle interior at a duct connection port of the vehicle air-conditioning device,
The air conditioner and the air conditioning duct have surfaces facing each other on the near side in the connection direction of the air conditioning duct to the duct connection port,
A guide ridge is formed on one of the facing surfaces of the air conditioner and the air conditioning duct, and the other is slidably fitted to the guide ridge and the connection portion of the air conditioning duct is connected to the duct connection port. A mounting structure for a vehicle air conditioning duct, wherein a guide groove for guiding is formed. It is a mounting structure of the air conditioning duct for vehicles according to claim 1,
The air conditioning duct has a duct trunk having the connection part connected to the duct connection port at an upstream end thereof, and two duct branches branched left and right from a downstream end of the duct trunk.
One of the guide ridge and the guide groove is formed in a duct trunk of the air conditioning duct, and extends in a direction passing through a branch portion where the left and right duct branches are separated,
The branch portion of the air conditioning duct has a connecting portion that connects and reinforces the left and right duct branches, and the connecting portion has a peep for visually confirming the other of the guide ridge and the guide groove. A mounting structure for a vehicle air conditioning duct, wherein a hole is formed. It is a mounting structure of the air conditioning duct for vehicles according to claim 1 or 2,
A mounting structure for a vehicle air-conditioning duct, wherein the air-conditioning device and the air-conditioning duct are provided with a fastening portion for fastening each other with a fastening part while being connected to each other.

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