JP3851497B2 - Air mix damper unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air mix damper unit capable of independently adjusting the temperature of air blown from a driver seat side outlet and a passenger seat side outlet provided in an automobile.
[0002]
[Prior art]
As a type of automotive air conditioner that can independently adjust the temperature of air blown from the driver's seat side outlet and the temperature of air blown from the passenger's side outlet, a cooling heat exchanger In addition, an HVAC (Heating, Ventilating, and Air-Conditioning) system including a first damper and a second damper arranged in parallel to each other and a heater is known. In this HVAC system, the cooling heat exchanger and the heater are usually housed in the same casing body. An air passage is formed in the casing body, the cooling heat exchanger is disposed in the vicinity of the inlet of the air passage, and the first damper, the second damper, and the heater are disposed downstream of the cooling heat exchanger. They are arranged in this order.
[0003]
The air introduced into the air passage is first cooled by exchanging heat with the liquid refrigerant flowing in the tubes constituting the cooling heat exchanger (hereinafter, the cooled air is referred to as cooling air).
[0004]
The size of the heater is smaller than the width of the air passage. Therefore, a part of the air introduced into the air passage is heated by contact with the heater and reaches the outlet of the air passage, and the remaining portion reaches the outlet without being heated by the heater.
[0005]
The first and second dampers interposed between the cooling heat exchanger and the heater respectively adjust the amount of cooling air flowing to the heater. That is, for example, when the first and second dampers are rotated by the rotation mechanism, the width of the flow path reaching the heater in the air passage is changed. In other words, the first and second dampers can be opened and closed with respect to the flow path leading to the heater and the flow path bypassing the heater.
[0006]
When the flow path leading to the heater is completely blocked by the first and second dampers, all the cooling air does not come into contact with the heater via the driver seat side air outlet or the passenger seat side air outlet provided in the automobile. It is blown out and supplied as cold air into the car.
[0007]
For example, when the user changes the temperature setting of the automotive air conditioner so that the temperature of the air blown out from the driver's seat side air outlet increases, the rotation mechanism is energized and only the first damper is displaced. The flow path leading to the heater is opened. As a result, after a part of the cooling air comes into contact with the heater and is heated, it is mixed with the remaining portion of the cooling air that has passed through the air passage without coming into contact with the heater and blown out from the driver's seat side outlet. Of course, the opening degree of the first damper is selected so that air is blown into the automobile at a temperature set by the user.
[0008]
In contrast, the second damper maintains a state where the flow path leading to the heater is closed. Therefore, cooling air is blown out from the passenger seat side air outlet.
[0009]
[Problems to be solved by the invention]
By the way, the air mix damper unit according to the related art described above has a problem that it is difficult to accurately adjust the temperature of the air blown from the driver seat side air outlet and the passenger seat side air outlet.
[0010]
This is because the mixed air of cooling air and heated air is in contact with one end face side of the support member that supports the first and second dampers, and the cooling air is in contact with the other end face. That is, the one end surface side of the support member with which the high-temperature mixed air comes into contact is heat-exchanged with the mixed air and becomes high temperature. For this reason, the temperature of mixed air will fall.
[0011]
On the other hand, since heat is conducted through the support member, the temperature on the other end surface side also rises. For this reason, the other end surface exchanges heat with the cooling air, and as a result, the temperature of the cooling air rises.
[0012]
In order to solve such a problem, it is recalled that a heat insulating material is stuck on the support member. However, in this case, since the number of parts increases by the amount of the heat insulating material, the manufacture of the air mix damper unit becomes complicated and the manufacturing cost increases.
[0013]
Further, in the air mix damper unit according to the related art, the first and second dampers are likely to be displaced when the support member is fixed to the casing body. Therefore, the first and second dampers are fixed to the predetermined parts of the casing body. There is a problem that it is not easy to attach to a place. In this case, it becomes difficult to adjust the first and second dampers to desired opening degrees, and therefore, it is difficult to adjust the temperature of the air blown into the automobile to the set temperature. The
[0014]
Furthermore, when the first and second dampers are rotated, a sufficient space is required in the casing body, and thus the shape of the casing body must be increased. For this reason, the air mix damper unit according to the prior art has a problem that it is difficult to reduce the size.
[0015]
The present invention has been made to solve the various problems described above, and the temperature of air blown from the driver's seat side air outlet and the temperature of air blown from the passenger's seat side air outlet without using a heat insulating material. And an air mix damper unit capable of easily adjusting the first and second dampers at predetermined locations on the casing body. To do.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an air mix damper unit capable of independently adjusting the temperatures of air blown from a driver seat side outlet and a passenger seat side outlet provided in an automobile. Because
A first opening and a second opening through which air blown out from the driver seat side air outlet passes, and a third opening and a fourth opening through which air blown out from the passenger seat side air outlet pass. A provided ventilation member;
A first damper that opens and closes the first opening and the second opening;
A second damper that opens and closes the third opening and the fourth opening;
A heater disposed facing the first opening and the third opening;
A casing body that houses the ventilation member, the first damper, the second damper, and the heater;
With
The ventilation member has a hollow portion formed between an end surface facing the first opening and the second opening and an end surface facing the third opening and the fourth opening. Features.
[0017]
In the ventilation member having a hollow portion, for example, when the end surfaces facing the first opening and the second opening are heated, from the end surface to the end surfaces facing the third opening and the fourth opening. And heat transfer is significantly hindered. Of course, the same applies to the reverse case. That is, both end surfaces are insulated from each other. For this reason, even when high-temperature air contacts one end surface and low-temperature air contacts the other end surface, it is possible to avoid an increase in the temperature of the low-temperature air. As a result, the temperature of the air blown from the driver seat side outlet and the temperature of the air blown from the passenger seat side outlet are accurately adjusted.
[0018]
Therefore, since a heat insulating material becomes unnecessary, the manufacturing process of the air mix damper unit can be simplified and the manufacturing cost can be reduced.
[0019]
Moreover, it is preferable that the ventilation member has a guide portion that slidably supports each of the first damper and the second damper. In such a configuration, when the openings are opened and closed, the first damper and the second damper may be slid along the guide portion. That is, since it is not necessary to rotate the first damper and the second damper, it is possible to reduce the size of the air mix damper unit.
[0020]
Furthermore, it is preferable that the ventilation member has an arch portion through which the heater passes. This is because the heater can be reliably positioned at a predetermined position by the ventilation member.
[0021]
And it is preferable that the ventilation member has a convex part or a concave part, and that the casing body has a concave part or a convex part. This is because the ventilation member can be easily and simply attached to the casing body by fitting the projection or depression of the ventilation member into the depression or projection of the casing body.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the air mix damper unit according to the present invention will be described and described in detail with reference to the accompanying drawings.
[0023]
FIG. 1 shows an exploded perspective view of main parts of the air mix damper unit according to the present embodiment. The air mix damper unit 10 includes a damper assembly 12 and a casing body 14 that houses the damper assembly 12. The casing body 14 is configured by connecting the first casing member 16 and the second casing member 18 shown in FIG. 1 to each other.
[0024]
As shown in FIGS. 2 and 3, the damper assembly 12 includes a first damper 20 and a second damper 22, and a support member (venting member) 26 having rails 24 a to 24 d as guide portions.
[0025]
As shown in FIG. 3, the first damper 20 includes a damper main body 28 having both ends open to reduce weight and a grid for securing strength, and one end face of the damper main body 28 closed. And a closing cover 30 to be used. That is, a plurality of first protrusions 32 are formed to protrude from both side walls in the longitudinal direction of the damper main body 28, while the closing cover 30 has notches 34 at positions corresponding to the first protrusions 32. Is formed. The closing cover 30 is locked to the damper main body 28 by passing the first protrusions 32 through the notches 34. Note that the closing cover 30 does not have a vent hole, and therefore air does not pass through the first damper 20.
[0026]
In addition, second side protrusions 36 are formed on both side walls of the damper main body 28 in the lateral direction so as to protrude. The second damper 36 is engaged with the rails 24 a and 24 b of the support member 26, so that the first damper 20 is slidably supported by the support member 26. At this time, one end surface of the first damper 20 closed by the closing cover 30 is directed to the support member 26 side.
[0027]
Further, a rack 38 is formed on the other end surface of the damper main body 28.
[0028]
The above configuration is the same for the second damper 22. Therefore, the same reference numerals are given to the same components as those of the first damper 20 in the second damper 22, and detailed description thereof will be omitted. The second protrusion 36 of the second damper 22 is engaged with the rails 24 c and 24 d of the support member 26.
[0029]
As shown in FIG. 4, pinions 40 are engaged with the rack 38 of the first damper 20 and the rack 38 of the second damper 22, respectively. As shown in FIG. 1, these pinions 40, 40 are fitted to rotary shafts 44, 46 that are passed through through holes 42, 42 formed in the central portions of the first and second casing members 16, 18, respectively. Has been.
[0030]
One end of the rotating shaft 46 is provided with a small-diameter portion 48 that is smaller in diameter than the portion where the pinion 40 is fitted (see FIG. 4). The small diameter portion 48 is inserted in a state where there is play in the insertion port 50 provided at one end of the rotating shaft 44. In other words, the small diameter portion 48 is rotatable within the insertion port 50, and therefore, the rotating shaft 46 does not rotate as the rotating shaft 44 rotates. Of course, even when the rotating shaft 46 rotates, the rotating shaft 44 does not rotate following this.
[0031]
Further, gears 52 and 52 are respectively fitted to the other ends of the rotating shafts 44 and 46 projecting outside from the through holes 42 and 42 (see FIG. 1) of the first and second casing members 16 and 18. ing. The gears 52 and 52 mesh with teeth (not shown) formed on fan-shaped gear driving units 56 and 56 attached to the electric motors 54 and 54. That is, the fan gear drive units 56 and 56 are connected to arms 58 and 58 extending from the drive shafts 57 and 57 of the electric motors 54 and 54, and the electric motors 54 and 54 are energized to drive the fan gears. As the portions 56 and 56 rotate, the gears 52 and 52 rotate. As a result, the rotating shafts 44 and 46 and the pinions 40 and 40 rotate and follow, and as a result, the racks 38 and 38 relatively move linearly, and the first and second dampers 20 and 22 are displaced. .
[0032]
In addition, each electric motor 54, each sector gear drive part 56, and each arm 58 are the members of the first casing member 16 or the second casing member 18, as shown in FIG. It is each installed in the outer wall part.
[0033]
Hereinafter, the configuration of the support member 26 will be described with reference to FIGS. 2 and 3.
[0034]
The support member 26 includes a frame portion 66 having three short frames 60a to 60c, two long frames 62a and 62b, and a partition frame 64 bridged from the short frame 60a to the short frame 60c. . By being divided by these frames 60 a to 60 c, 62 a, 62 b and 64, the frame portion 66 is formed with first to fourth openings 68 a to 68 d having substantially the same dimensions.
[0035]
The first damper 20 has a dimension capable of completely closing either the first opening 68a or the second opening 68b. Similarly, the second damper 22 has the third opening 68c or the fourth opening 68d. It is a dimension which can completely block either one. For example, when the first damper 20 is located at the end of the support member 26 on the long frame 62a side, the first opening 68a is fully closed and the second opening 68b is fully opened.
[0036]
A reinforcing frame 70 for securing the rigidity of the support member 26 is bridged from the long frames 62 a and 62 b to the partition frame 64. The rail 24a is formed on one end surface of the short frame 60a, and the rails 24b and 24c are formed on one end surface of the short frame 60b (see FIG. 3). Furthermore, the rail 24d is formed on one end surface of the short frame 60c. And the protruding wall part 72 as a convex part is integrally projected and formed in the side wall part of this short frame 60a, 60c and long frame 62a, 62b (refer FIG. 2 and FIG. 3).
[0037]
An air distribution plate 74 rises from the partition frame 64 (see FIG. 2). As will be described later, the air distribution plate 74 is used to prevent the cooling air that has passed through the second opening 68b and the fourth opening 68d from contacting the heater 76 shown in FIG. 5 and being heated. .
[0038]
A partition portion 78 rising from the short frame 60b is integrally connected to one end surface of the air distribution plate 74 so as to partition the second opening 68b and the fourth opening 68d (see FIG. 2). As can be understood from FIG. 2, the vertical dimension of the partition portion 78 is higher than that of the air distribution plate 74, and therefore, one end surface of the partition portion 78 protrudes from the air distribution plate 74. One end portion of the arch portion 80 is integrally connected to one end surface of the protruding partition portion 78. The other end portion of the arch portion 80 is integrally connected to the long frame 62 a of the frame portion 66.
[0039]
A plurality of hollow portions 82 are formed in the arch portion 80 and the partition portion 78 by partially removing the arch portion 80 and the partition portion 78. Due to the presence of the hollow portion 82, heat transfer from the end surface facing the first opening 68a to the end surface facing the third opening 68c is significantly suppressed in the arch portion 80. Similarly, in the partition portion 78, heat transfer from the end surface facing the second opening 68b to the end surface facing the fourth opening 68d is remarkably suppressed. Of course, the same applies to the opposite direction.
[0040]
In other words, the end portion facing the first opening 68a and the third opening 68c in the arch portion 80 and the end surface facing the second opening 68b and the end surface facing the fourth opening 68d in the partition portion 78 by the hollow portion 82. Are in a state of being insulated from each other. For this reason, as will be described later, the temperature of the air blown out from the driver seat side outlet and the temperature of the air blown out from the passenger seat side outlet are accurately controlled in the automobile vehicle.
[0041]
As shown in FIG. 5, a heater 76 is passed through the opening of the arch portion 80. That is, the heater 76 contacts the cooling air that has passed through the first opening 68a and the third opening 68c to heat the cooling air (hereinafter, the heated air is referred to as heating air). Of course, the heater 76 is of a size that is accommodated between the short frames 60 a to 60 c, the long frames 62 a and 62 b, and the partition frame 64 of the frame portion 66.
[0042]
The shape of the arch portion 80 corresponds to the shape of the opening end portion 16a (see FIG. 1) of the first casing member 16 and the opening end portion 18a of the second casing member 18 shown in FIG. And the sealing material which is not shown in figure is each installed in the both-sides wall part 80a which the arch part 80 protruded.
[0043]
Next, the configuration of the first casing member 16 and the second casing member 18 will be described with reference to FIGS. 1 and 6.
[0044]
On the side wall portion inside the first casing member 16, a band portion 84 rising in the horizontal direction is provided (see FIG. 1). The band portion 84 is formed with a fitting groove 86 as a recess. Further, the shape of the opening end portion 16 a of the first casing member 16 corresponds to the shape of the arch portion 80 of the support member 26.
[0045]
Further, a bolt hole for passing a bolt (not shown) for connecting the first casing member 16 and the second casing member 18 to each other is formed in the protruding portion 88 formed to protrude from the first casing member 16. 90 and a plurality of pin portions 92 are formed.
[0046]
Similarly, a strip 94 rising in the horizontal direction from the side wall is also provided in the second casing member 18 (see FIG. 6), and a fitting groove 96 is also formed in the strip 94. Yes. Further, the shape of the opening end portion 18 a of the second casing member 18 also corresponds to the shape of the arch portion 80 of the support member 26.
[0047]
Further, the projecting portion 98 formed to project from the second casing member 18 includes bolts at positions corresponding to the respective bolt holes 90 and the respective pin portions 92 formed in the projecting portion 88 of the first casing member 16. A hole 100 and a hole 102 are formed.
[0048]
A driver seat side air outlet 104 and a passenger seat side air outlet 106 are respectively formed above the first and second casing members 16 and 18. The air that has passed through the first opening 68a and the second opening 68b of the support member 26 is blown into the automobile through the driver's seat side outlet 104, while the air that has passed through the third opening 68c and the fourth opening 68d is an assistant. The air is blown into the car through the seat side air outlet 106.
[0049]
The air mix damper unit 10 according to the present embodiment is basically configured as described above. Next, the function and effect will be described.
[0050]
When the damper assembly 12 is mounted on the casing body 14, first, the second protrusion 36 of the first damper 20 is engaged with the rails 24 a and 24 b of the support member 26. Similarly, the second protrusion 22 of the second damper 22 is engaged. 36 is engaged with the rails 24 c and 24 d of the support member 26. In this state, as shown in FIG. 7, after the protruding wall portion 72 of the support member 26 is fitted into the fitting groove 96 of the second casing member 18, the side wall portion of the arch portion 80 of the support member 26 is second. It is slid until it contacts the open end 18a of the casing member 18. Thus, the first and second dampers 20 and 22 are attached to the second casing member 18 via the support member 26, and the arch portion 80 of the support member 26 and the open end portion 18 a of the second casing member 18. A sealing material (not shown) is interposed between the two. As described above, since the shape of the opening end portion 18a corresponds to the shape of the arch portion 80, the space between the opening end portion 18a and the arch portion 80 is reliably sealed by the sealing material.
[0051]
Then, the rotary shaft 46 is passed through the through hole 42, and the gear 52 is fitted to one end portion of the rotary shaft 46 that protrudes outward from the through hole 42 to the second casing member 18. Further, the pinion 40 is fitted to the other end portion, and the pinion 40 is disposed so as to mesh with the rack 38 of the second damper 22 (see FIG. 4). Further, the small diameter portion 48 of the rotating shaft 46 is inserted into the insertion port 50 of the rotating shaft 44 with which the pinion 40 is fitted.
[0052]
On the other hand, the heater 76 is passed through the opening of the arch portion 80 of the support member 26 and placed on the support member 26 so that the heater 76 faces the first opening 68a and the third opening 68c (see FIG. 5).
[0053]
Further, a cooling heat exchanger (not shown) is disposed in the second casing member 18 so as to face the frame portion 66 of the support member 26. This cooling heat exchanger has a tube (not shown), and a liquid refrigerant is circulated in the tube.
[0054]
In addition, a wind direction adjusting damper, a baffle plate (none of which are shown), an auxiliary air distribution plate 108 (see FIG. 6), and the like are arranged at predetermined positions in the second casing member 18 as necessary. You may do it.
[0055]
Next, the protruding wall portion 72 of the support member 26 is fitted into the fitting groove 86 (see FIG. 1) of the first casing member 16, and the arch of the support member 26 is fitted to the opening end portion 16 a of the first casing member 16. The first casing member 16 is slid until the side wall portion of the portion 80 abuts and the pin portion 92 of the first casing member 16 is fitted into the hole 102 of the second casing member 18. At this time, in the same manner as described above, the seal material is interposed between the arch portion 80 of the support member 26 and the opening end portion 16a of the first casing member 16, and the pinion is fitted to the rotating shaft 44. 40 meshes with the rack 38 of the first damper 20.
[0056]
Of course, a wind direction adjusting damper, a baffle plate, an auxiliary air distribution plate (none of which are shown), and the like may be arranged at predetermined positions in the first casing member 16.
[0057]
Then, after the gear 52 is fitted to one end portion of the rotating shaft 44 protruding from the through hole 42 of the first casing member 16, the electric motor 54 is attached to the outer wall portion of the first casing member 16, and the sector gear driving portion. The 56 teeth and the gear 52 are meshed with each other.
[0058]
As described above, the protruding wall portion 72 of the support member 26 with which the first and second dampers 20 and 22 are engaged is formed into the fitting groove 86 of the first casing member 16 and the fitting groove 96 of the second casing member 18. The first and second dampers 20 and 22 can be easily and simply attached to the casing body 14 by being fitted to each other.
[0059]
Next, a bolt (not shown) is passed through the bolt hole 90 of the first casing member 16 and the bolt hole 100 of the second casing member 18, and a nut (not shown) is screwed to the bolt, whereby the first casing member 16 and the first casing member 16 are connected. The casing main body 14 is configured by connecting the two casing members 18 to each other. Thereby, the damper assembly 12 is accommodated in the casing body 14. That is, the first and second dampers 20 and 22 are attached to the casing body 14 via the support member 26, and thereby the air mix damper unit 10 is configured.
[0060]
Of course, the protruding wall portion 72 of the support member 26 may be first fitted into the fitting groove 86 of the first casing member 16.
[0061]
In this case, since the first and second dampers 20 and 22 are securely mounted at predetermined positions of the casing body 14, the first and second dampers 20 and 22 are not displaced. Further, since the heater 76 is positioned by being supported by the support member 26, the heater 76 is not displaced. Therefore, the first casing member 16 and the second casing member 18 can be firmly connected to each other. Therefore, the casing main body 14 excellent in sealing performance can be configured.
[0062]
A blower unit (not shown) for introducing air into the casing main body 14 is usually mounted below the air mix damper unit 10.
[0063]
The first and second dampers 20 and 22 operate as follows.
[0064]
First, a case where the first opening 68a and the third opening 68c of the support member 26 are fully closed by the first and second dampers 20 and 22 will be described.
[0065]
The air introduced into the casing main body 14 through the blower unit is first cooled by exchanging heat with a liquid refrigerant flowing through a tube of the cooling heat exchanger (not shown) to become cooling air. The cooling air rises toward the damper assembly 12 in the casing body 14.
[0066]
Here, since both the first opening 68a and the third opening 68c are fully closed by the first and second dampers 20, 22, all the cooling air passes through the second opening 68b and the fourth opening 68d. In this case, since the heater 76 (see FIG. 6) and the second opening 68b and the fourth opening 68d are partitioned by the air distribution plate 74, the cooling air that has passed through the second opening 68b and the fourth opening 68d is the heater 76. Ascend without contacting the vehicle and blow out into the car through the driver's seat side outlet 104 and the passenger's side outlet 106, respectively. That is, the cooling air that has passed through the second opening 68 b and the fourth opening 68 d bypasses the heater 76.
[0067]
As can be understood from the above, when both the first opening 68a and the third opening 68c are fully closed by the first and second dampers 20 and 22, the cooling air is not heated by the heater 76. It is blown into the car. In this case, the temperature of the air blown into the automobile is lowest.
[0068]
When only the temperature of the air blown out from the driver seat side outlet 104 is to be raised from this state, the user can adjust the driver seat side air temperature adjustment lever provided in the automobile air conditioner installed in the car. What is necessary is just to change temperature setting by (not shown).
[0069]
When such a setting change is performed, the electric motor 54 attached to the first casing member 16 is energized to drive the arm 58, and the sector gear drive unit 56 rotates accordingly. As a result, the rotating shaft 44 and the pinion 40 fitted to the rotating shaft 44 are rotated, and the rack 38 relatively moves linearly. That is, the second protrusion 36 of the first damper 20 slides while being guided by the rails 24a and 24b of the support member 26, and finally the first damper 20 is displaced toward the second opening 68b. . Of course, the stop position of the first damper 20 is set so that the air is blown into the automobile at a temperature set by the user.
[0070]
That is, the temperature of the air blown out from the driver seat side outlet 104 in the automobile is adjusted by the displacement amount of the first damper 20, in other words, the opening degree of the first opening 68a and the second opening 68b. Similarly, the temperature of the air blown from the passenger seat side air outlet 106 is adjusted by the displacement amount of the second damper 22, that is, the opening degree of the third opening 68c and the fourth opening 68d.
[0071]
As can be understood from this, in the air mix damper unit 10 according to the present embodiment, when the temperature of the air blown into the automobile is adjusted, the first damper 20 and the second damper 22 are the support members 26. The rails 24a to 24d are guided to slide. That is, it is not necessary to rotate the first damper 20 and the second damper 22 in order to adjust the opening degree of the first to fourth openings 68a to 68d. In other words, it is not necessary to secure a space for the first damper 20 and the second damper 22 to rotate. For this reason, size reduction of the casing main body 14, and by extension, the air mix damper unit 10 can be achieved.
[0072]
Note that when the first damper 20 slides, the small diameter portion 48 of the rotating shaft 46 idles in the insertion port 50 of the rotating shaft 44. That is, the rotating shaft 46 does not rotate following the rotating shaft 44. Therefore, the second damper 22 does not slide.
[0073]
As the first damper 20 is displaced, the first opening 68a opens, so that a part of the cooling air passes through the first opening 68a and comes into contact with the heater 76. That is, the cooling air that has passed through the first opening 68a is heated by the heater 76 to become heated air. On the other hand, the remaining portion of the cooling air passes through the second opening 68b and the fourth opening 68d, and rises without contacting the heater 76 as described above.
[0074]
The heated air is mixed with the cooling air that has passed through the second opening 68b above the air distribution plate 74 (hereinafter, the mixed air is referred to as mixed air). That is, mixed air is in contact with the end surface of the arch portion 80 facing the first opening 68a and the end surface of the partition portion 78 facing the second opening 68b, while the end surface of the partition portion 78 facing the fourth opening 68d is mixed. Cooling air that is cooler than air is in contact.
[0075]
And in this case, in the arch part 80 and the partition part 78, the temperature of the end surface on the side where the mixed air contacts increases. That is, the temperature of the end surface facing the first opening 68a in the arch portion 80 is higher than that of the end surface facing the third opening 68c, and the temperature of the end surface facing the second opening 68b in the partition portion 78 is increased in the fourth opening 68d. It becomes higher than the end face.
[0076]
Here, as described above, the arch portion 80 and the partition portion 78 are provided with the hollow portion 82, and the hollow portion 82 faces the end surface facing the first opening 68 a and the third opening 68 c in the arch portion 80. The end surface is insulated from each other, and the end surface facing the second opening 68b and the end surface facing the fourth opening 68d in the partition portion 78 are insulated from each other. For this reason, as the temperature of the end surface facing the first opening 68a in the arch portion 80 and the end surface facing the second opening 68b in the partition portion 78 rises, the end surface facing the third opening 68c in the arch portion 80 and the partition portion 78. The rise in the temperature of the end face facing the fourth opening 68d is significantly suppressed.
[0077]
That is, the end surface of the arch portion 80 and the partition portion 78 on the side where the cooling air contacts is suppressed from becoming high temperature, and as a result, the cooling air that has passed through the fourth opening 68d exchanges heat with the arch portion 80 and the partition portion 78. Thus, it is possible to avoid the temperature from rising. That is, the temperature of mixed air and cooling air can be maintained without using a heat insulating material.
[0078]
Moreover, since it is not necessary to use a heat insulating material, the manufacturing process of an air mix damper can be simplified and manufacturing cost can also be reduced.
[0079]
The mixed air rises along one end surfaces of the arch part 80 and the partition part 78 and is blown out into the automobile through the driver seat side outlet 104. On the other hand, the cooling air rises along the other end surfaces of the arch portion 80 and the partition portion 78 and is blown out through the passenger seat side air outlet 106.
[0080]
At this time, since the temperatures of the mixed air and the cooling air are maintained, the temperature of the air blown out from the driver seat side air outlet 104 is adjusted so as to increase, and the air is blown out from the passenger side air outlet 106. An increase in the temperature of the air is avoided.
[0081]
On the other hand, when only the temperature of the air blown from the passenger seat side air outlet 106 is to be raised, the second damper 22 may be displaced under the action of the electric motor 54. That is, a part of the cooling air may be brought into contact with the heater 76 by opening the third opening 68c. Of course, in this case as well, it is avoided that the temperature of the cooling air that has passed through the second opening 68b, that is, the air blown out from the driver's seat side outlet 104, rises in the same manner as described above.
[0082]
Thus, by providing the hollow part 82 in the arch part 80 and the partition part 78 of the support member 26 that constitutes the damper assembly 12, the temperature of the air blown from the driver seat side outlet 104, and the passenger seat side outlet The temperature of the air blown out from 106 can be accurately controlled independently of each other.
[0083]
In the above-described embodiment, the protruding wall portion 72 (convex portion) of the support member 26 is formed with the fitting groove 86 (concave portion) of the first casing member 16 and the fitting groove 96 ( The recess is provided in the side wall of the support member 26, and the first casing member 16 and the second casing member 18 correspond to the shape of the fitting groove. A protruding portion (convex portion) having a shape to be formed may be provided, and the protruding portion may be fitted into the fitting groove.
[0084]
【The invention's effect】
As described above, according to the air mix damper unit of the present invention, since the hollow member is provided in the ventilation member, heat can be transmitted from one end surface of the ventilation member to the other end surface. Remarkably suppressed. For this reason, the temperature of the air which contacts the both end surfaces of the ventilation member can be accurately controlled. Therefore, when air with different temperatures is blown from the driver's seat side outlet and the passenger's side air outlet installed in the car, the temperature of the air blown from one of the outlets is adjusted to rise or fall As a result, the effect that the temperature of the air blown out from the other outlet can be prevented from rising or falling can be achieved.
[0085]
In addition, in this case, since a heat insulating material is not necessary, the manufacturing process of the air mix damper can be simplified and the manufacturing cost can be reduced.
[0086]
Further, since the convex portion or concave portion provided on the support member is fitted to the concave portion or convex portion provided on the casing body, the first and second dampers can be easily and simply placed at predetermined positions on the casing body. Can be installed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part of an air mix damper unit according to the present embodiment.
FIG. 2 is a schematic overall perspective view of the damper assembly of FIG.
FIG. 3 is a schematic overall perspective view showing the damper assembly of FIG. 1 from the bottom.
4 is a perspective view of main parts of a first damper and a second damper provided in the damper assembly of FIG. 1 and an electric motor for displacing the first damper and the second damper. FIG.
FIG. 5 is a schematic overall perspective view showing a state where a heater is passed through an arch portion of a support member provided in the damper assembly of FIG. 1;
6 is an exploded perspective view of a main part showing a damper assembly and a second casing member of FIG. 1; FIG.
7 is a perspective view of a main part showing a state where the damper assembly of FIG. 1 is fitted to a second casing member. FIG.
[Explanation of symbols]
10 ... Air mix damper unit 12 ... Damper assembly
14 ... Casing body 16, 18 ... Casing member
20, 22 ... Damper 24a-24d ... Rail
26 ... Supporting member (venting member) 38 ... Rack
40 ... pinion 52 ... gear
54 ... Electric motor 68a-68d ... Opening
72 ... Projection wall part (convex part) 74 ... Air distribution board
76 ... Heater 78 ... Partition
80 ... Arch part 82 ... Hollow part
86, 96 ... fitting groove (recess) 104 ... driver's seat side outlet
106: Passenger side air outlet

Claims (4)

An air mix damper unit capable of independently adjusting the temperature of air blown from a driver seat side outlet and a passenger seat side outlet provided in an automobile,
A first opening and a second opening through which air blown out from the driver seat side air outlet passes, and a third opening and a fourth opening through which air blown out from the passenger seat side air outlet pass. A provided ventilation member;
A first damper that opens and closes the first opening and the second opening;
A second damper that opens and closes the third opening and the fourth opening;
A heater disposed facing the first opening and the third opening;
A casing body that houses the ventilation member, the first damper, the second damper, and the heater;
With
The ventilation member has a hollow portion formed between an end surface facing the first opening and the second opening and an end surface facing the third opening and the fourth opening. A featured air mix damper unit. 2. The air mix damper unit according to claim 1, wherein the ventilation member has a guide portion that slidably supports each of the first damper and the second damper. . 3. The air mix damper unit according to claim 1, wherein the ventilation member further includes an arch portion through which the heater is passed. 4. The air mix damper unit according to any one of claims 1 to 3, wherein the ventilation member has a convex portion or a concave portion, and the casing body has a concave portion or a convex portion,
An air mix damper unit, wherein the ventilation member is attached to the casing body by fitting the projection or depression of the ventilation member into the depression or projection of the casing body.

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