JP2015217897A - Vehicular air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular air conditioner comprising an air mixing mechanism which is smaller, and whose moving distance is shorter, compared with conventional air mixing mechanisms.SOLUTION: A vehicular air conditioner 10 comprises a case 13, an air heater 14, and an air mixing mechanism 100, and the air mixing mechanism comprises a fixed plate 110, a first movable plate 120A, a second movable plate 120B, a rotary shaft 130, and an arm 140. The first movable plate, when contacting the fixed plate, blocks a flow of air passing through the air heater by closing slits together with the fixed plate, and when separated from the fixed plate, opens the slits closed by itself and the fixed plate and flows air passing through the air heater. The second movable plate, when contacting the fixed plate, blocks a flow of air bypassing the air heater by closing the slits together with the fixed plate, and when separated from the fixed plate, opens the slits closed by itself and the fixed plate and flows air bypassing the air heater 14.

Description

  The present invention relates to a vehicle air conditioner.

  A vehicle air conditioner normally includes an air mix mechanism, and the air mix mechanism adjusts the ratio of the amount of air that passes through the air heating device (heater core) and the amount of air that bypasses the air heating device.

  As a conventional air mix mechanism, for example, a cantilever type air mix door (for example, refer to Patent Document 1) whose one end is fixed to a rotary shaft, butterfly type cold air that can rotate around the rotary shaft Mix door (for example, refer to Patent Document 2), an air mix door (for example, refer to Patent Document 3) in which two door members are connected by a hinge, and a plate-shaped mix door that slides up and down (for example, , See Patent Document 4). Also, at least one panel having at least one through hole located in the high temperature air duct, an open plate that does not cover the through hole of the panel, and a cut-off plate that can move between a cut-off position that closes the panel, and an open At least one shutter for adjusting the passage cross section of the cold air duct, which can be moved between a position and a cutoff position, and a movement of the cutoff plate for adjusting the passage cross section of the cold air duct between the open position and the cutoff position And a control device that controls the movement of the shutter in synchronization with each other (for example, see Patent Document 5).

JP 2002-243262 A JP 2001-294031 A JP 2000-190722 A Japanese Patent Application Laid-Open No. 11-1114 Japanese Patent Laid-Open No. 2003-127737

  However, the air mix mechanism described in Patent Document 1 or 2 requires a large space for the door to rotate, and the vehicle air conditioner becomes large. The air mix mechanism described in Patent Document 3 takes a long time to switch modes because of the long movement distance of the door. In order to speed up the movement of the door, it is necessary to increase the rotational speed of the rotary shaft of the door, and a large torque is required to rotate the door quickly. The air mix mechanism described in Patent Document 4 also takes a long time to switch modes because of the long door movement distance. In the mixing apparatus described in Patent Document 5, the shutter is a butterfly door, and further miniaturization is desired.

  An object of the present invention is to provide a vehicle air conditioner including an air mix mechanism that is smaller than a conventional air mix mechanism and has a short moving distance.

  An air conditioner for a vehicle according to the present invention includes a case having an air passage for blowing air therein, an air heating device that is disposed inside the case and heats the blowing air, and the air passage more than the air heating device. An air mix mechanism that adjusts the ratio of the amount of air that passes through the air heating device and the amount of air that bypasses the air heating device, wherein the air mix mechanism is The fixed plate, the first movable plate, the second movable plate, the rotation shaft, the first engagement portion that engages the first movable plate, and the second engagement that engages the second movable plate. And the fixed plate, the first movable plate, and the second movable plate are each provided penetrating in the thickness direction of the fixed plate, the first movable plate, and the second movable plate. The first movable plate is in contact with the fixed plate. The fixed plate and the slit are closed to block the flow of air passing through the air heating device, and when separated from the fixed plate, the slit is closed to the fixed plate and the slit is released. Flowing air passing through an air heating device, and when the second movable plate comes into contact with the fixed plate, the second movable plate closes the fixed plate and the slit to block the air flow bypassing the air heating device; and When the air is separated from the fixing plate, the air that bypasses the air heating device is opened by opening the slit of the fixing plate and the air mixing mechanism is rotated with the rotation of the rotating shaft. (1) A full hot mode in which the first movable plate is separated from the fixed plate and the second movable plate is in contact with the fixed plate. (2) The first movable plate is A state in contact with the fixed plate, and A full cool mode in which the second movable plate is separated from the fixed plate; and (3) the first movable plate is separated from the fixed plate, and the second movable plate is fixed. It has the three modes of the air mix mode which is the state spaced apart from the board.

  The vehicle air conditioner according to the present invention includes a first rail connected to one end of the fixed plate, and a second rail connected to the other end of the fixed plate, and the first engagement. The portion is provided on a first direction orthogonal to the axial direction of the rotation shaft, and the second engagement portion is provided on a second direction intersecting the first direction, and the first movable plate One end portion has a first engagement shaft that engages with the first engagement portion, and the other end portion of the first movable plate has a first pin that slides in the first rail. One end of the second movable plate has a second engagement shaft that engages with the second engagement portion, and the other end of the second movable plate is the second rail. It is preferable to have a second pin that slides inside. The moving distance of the first movable plate and the second movable plate can be further shortened to further reduce the size of the air mix mechanism. Moreover, since the area where the 1st movable plate and the 2nd movable plate contact | abut to a fixed plate can be enlarged more, the air quantity of the ventilation air which passes an air mix mechanism can be increased more.

  In the vehicle air conditioner according to the present invention, the first engaging portion is a rail extending in a first direction orthogonal to the axial direction of the rotating shaft, and the second engaging portion is in the first direction. Are rails extending in different second directions, and one end of the first movable plate has a first engagement pin that slides in the rail of the first engagement portion, and the first movable plate The other end portion of the second movable plate has a first connecting shaft rotatably connected to the fixed plate, and the one end portion of the second movable plate slides within the rail of the second engaging portion. Preferably, the other end of the second movable plate has a second connecting shaft that is rotatably connected to the fixed plate. Since the first movable plate can be rotated about the first connecting shaft and the second movable plate can be rotated about the second connecting shaft, the first movable plate and the second movable plate can be moved more smoothly. be able to.

  In the vehicle air conditioner according to the present invention, it is preferable that the first movable plate and the second movable plate are arranged on the upstream side of the air passage with respect to the fixed plate. The first movable plate and the second movable plate are pressed toward the fixed plate by the blown air, and unintended air leakage in the fully closed state can be suppressed.

  In the vehicle air conditioner according to the present invention, it is preferable that the fixing plate has a cross-sectional shape that protrudes downstream of the air passage. The air conditioner can be further downsized.

  In the vehicle air conditioner according to the present invention, it is preferable that the first movable plate and the second movable plate have a cross-sectional shape convex toward the downstream side of the air passage. The wind speed of the air passing through the air mix mechanism can be made uniform.

  In the vehicle air conditioner according to the present invention, the slit is arranged with the longitudinal direction of the slit directed in the vertical direction of the vehicle, and (a) the fixed plate, (b) the second movable plate, Or (b) It is preferable that the board of the downstream of the said air path has an air guide which is arrange | positioned along the longitudinal direction of the slit provided in this board, and protrudes in the downstream of the said air path. Generally, the air conditioned at the downstream side of the air mix mechanism is required to have an appropriate temperature difference between the upper and lower air. By arranging the air guide in the vertical direction, it is possible to guide the warm air upward and obtain air having an appropriate temperature difference.

  In the vehicle air conditioner according to the present invention, it is preferable that the number of the rotation shaft is one. The air mix mechanism can be further downsized.

  In the vehicle air conditioner according to the present invention, the air mix mechanism includes at least one of (a) the fixed plate, (b) the first movable plate, and the second movable plate (a) or (b). It is preferable that an insertion portion protrudes from one surface, and the insertion portion fits into the slit when the first movable plate or the second movable plate abuts on the fixed plate. When the first movable plate or the second movable plate comes into contact with the fixed plate, unintended air leakage can be suppressed.

  In the vehicle air conditioner according to the present invention, at least one of (a) the fixed plate, (b) the first movable plate, and the second movable plate (a) or (b) includes a seal portion. And the seal portion surrounds each of the slits, and when the first movable plate or the second movable plate abuts on the fixed plate, the entire circumference of the seal portion is the first movable plate or the second movable plate. It is preferably sandwiched between the movable plate and the fixed plate and compressed. When the first movable plate or the second movable plate comes into contact with the fixed plate, unintended air leakage can be suppressed.

  The present invention can provide a vehicle air conditioner including an air mix mechanism that is smaller than a conventional air mix mechanism and has a short moving distance.

It is the schematic which shows an example of the vehicle air conditioner which concerns on this embodiment, and shows full hot mode. It is a figure which shows the 1st example of the slit arrangement | sequence of a fixing plate. It is a figure which shows the 1st example of the slit arrangement | sequence of a movable plate, (a) shows a 2nd movable plate, (b) shows a 1st movable plate. It is the schematic which shows the air mix mechanism of a 1st example, and shows the state of full hot mode. It is the schematic which shows the air mix mechanism of a 1st example, and shows the state of an air mix mode. It is the schematic which shows the air mix mechanism of a 1st example, and shows the state of a full cool mode. It is a perspective view which shows an example of the 1st movable plate in the air mix mechanism of a 1st example. It is a perspective view which shows an example of the arm in the air mix mechanism of a 1st example. It is the schematic which shows the air mix mechanism of a 2nd example, and shows the state of full hot mode. It is the schematic which shows the air mix mechanism of a 2nd example, and shows the state of air mix mode. It is the schematic which shows the air mix mechanism of a 2nd example, and shows the state of a full cool mode. It is a perspective view which shows an example of the 1st movable plate in the air mix mechanism of a 2nd example. It is a perspective view which shows an example of the arm in the air mix mechanism of a 2nd example. It is the schematic which shows the air mix mechanism of a 3rd example, and shows the warm air side area | region of a 1st movable plate and a fixed plate. It is a figure which shows the 2nd example of the slit arrangement | sequence of a fixing plate. It is a figure which shows the 2nd example of the slit arrangement | sequence of a movable plate, (a) shows a 2nd movable plate, (b) shows a 1st movable plate. It is a perspective view which shows an example of an air guide. It is a figure which shows an example of an insertion part. FIG. 19 is a sectional view taken along line AA in FIG. 18. It is a figure which shows an example of a seal | sticker part. The BB sectional view taken on the line of FIG. 20 is shown. It is the schematic which shows an example of the vehicle air conditioner which concerns on this embodiment, and shows air mix mode. It is the schematic which shows an example of the vehicle air conditioner which concerns on this embodiment, and shows a full cool mode. It is the schematic which shows an example of the vehicle air conditioner which concerns on this embodiment, the air mix mechanism shows the state of full hot mode, and the blowing mode shows the state of differential foot mode.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the following embodiments. In the present specification and drawings, the same reference numerals denote the same components. Various modifications may be made as long as the effects of the present invention are achieved.

  As shown in FIG. 1, the vehicle air conditioner 10 according to the present embodiment includes a case 13 having an air passage 12 for blowing air therein and an air heating device (inside the case 13) that heats the blowing air. In FIG. 1, a heater core) 14 and an air mix mechanism that is arranged on the upstream side of the air passage 12 relative to the heater core 14 and adjusts the ratio of the amount of air that passes through the heater core 14 and the amount of air that bypasses the heater core 14. 100, the air mix mechanism 100 engages the fixed plate 110, the first movable plate 120A, the second movable plate 120B, the rotating shaft 130, and the first movable plate 120A. A first engagement portion 141 and a second engagement portion 142 that engages the second movable plate 120B, and an arm 140 that is fixed to the rotation shaft 130. The first movable plate 120A and the second movable plate 120B have slits 111 and 121 provided so as to penetrate in the plate thickness direction, respectively, as shown in FIGS. 2 and 3A and 3B. When the first movable plate 120 </ b> A abuts the fixed plate 110, the fixed plate 110 and the slits 111 and 121 are closed to block the flow of air passing through the heater core 14, and when the movable plate 120 </ b> A is separated from the fixed plate 110. Air that passes through the heater core 14 is released by closing the slits 111, 121 with the fixed plate 110, and the second movable plate 120 </ b> B comes into contact with the fixed plate 110 and the fixed plate 110 and the slits 111, 121. The flow of air that bypasses the heater core 14 is cut off, and the slits 111 and 121 with the fixed plate 110 are opened when they are separated from the fixed plate 110. As shown in FIGS. 4 to 6, the air mix mechanism 100 causes (1) the first movable plate 120 </ b> A to move away from the fixed plate 110 as the rotation shaft 130 rotates. A full hot mode in which the second movable plate 120B is in contact with the fixed plate 110, and (2) the first movable plate 120A is in contact with the fixed plate 110, and (2) Full cool mode in which the movable plate 120B is separated from the fixed plate 110, and (3) the first movable plate 120A is separated from the fixed plate 110, and the second movable plate 120B is fixed plate 110. There are three modes: an air mix mode, which is a state separated from

  Case 13 is a case of HVAC (heating, ventilation, and air conditioning). The case 13 has an air passage 12 for blown air therein. The case 13 has a defroster opening 16 that leads to a defroster outlet (not shown), a vent opening 17 that leads to a vent outlet (not shown), and a foot opening 18 that leads to a foot outlet (not shown). The defroster opening 16 is opened and closed by the defroster door 6. The vent outlet 17 is opened and closed by a vent door 7. The foot opening 18 is opened and closed by the foot door 8. In FIG. 1, although the defroster door 6, the vent door 7, and the foot door 8 showed the form which is a plate door, this invention is not limited to the kind of door.

  An air heating device 14 is disposed in the air passage 12. In FIG. 1, the air heating device 14 is a heater core as an example, but any device that heats blown air may be used, and the embodiment is not particularly limited. Examples of the air heating device 14 include a hot water heater core, an electric heating heater core, and a refrigeration cycle condenser. An air cooling device 15 may be disposed in the air passage 12. FIG. 1 shows an example in which the air cooling device 15 is an evaporator. The evaporator 15 is disposed upstream of the heater core 14 in the air passage 12 and cools the blown air.

  The air passage 12 includes a hot air passage 12a that blows air to the heater core 14, a cold air passage 12b that bypasses the heater core 14, and an air mix chamber 12c. The warm air passage 12 a is a space for guiding the blown air to the heater core 14. The cool air passage 12 b is a space that guides the blown air to the downstream side of the heater core 14 without passing through the heater core 14. The air mix chamber 12c is a space in which the air that has passed through the hot air passage 12a and the air that has passed through the cold air passage 12b are mixed.

  The air mix mechanism 100 is a door that adjusts the ratio of the amount of air that passes through the heater core 14 and the amount of air that bypasses the heater core 14. In the vehicle air conditioner according to the present embodiment, as the air mix mechanism, the first example air mix mechanism 100 shown in FIGS. 1 to 8, the second example air mix mechanism 200 shown in FIGS. 9 to 13, and FIG. The air mix mechanism 300 of the third example shown in FIG. The air mixing mechanism 100 of the first example, the air mixing mechanism 200 of the second example, and the air mixing mechanism 300 of the third example share the basic structure of the fixed plate, the first movable plate, and the second movable plate, and have a rotating shaft. The structure of the arm and the mounting structure of each plate are different from each other.

(First example air mix mechanism)
(Basic structure of fixed plate)
The basic structure of the fixed plate 110 will be described by taking the air mix mechanism 100 of the first example as an example. The fixed plate 110 is a plate-like member, and is disposed so as to block the hot air passage 12a and the cold air passage 12b, as shown in FIG. The fixed plate 110 has a hot air side region 110A arranged in the hot air passage 12a and a cold air side region 110B arranged in the cold air passage 12b. The vertical cross-sectional shape of the fixing plate 110 is preferably a shape that is convexly curved toward the downstream side of the air passage as shown in FIG. The fixed plate 110 is fixed to the case 13. The fixing plate 110 may be separate from the case 13 or may be integrated with the case 13.

  A slit (hereinafter also referred to as a “fixed slit”) 111 provided in the fixed plate 110 is formed by a through hole provided so as to penetrate in the thickness direction of the fixed plate 110. As shown in FIG. 2, each fixed slit 111 is preferably composed of one through hole. In the present embodiment, it is preferable that the plurality of fixed slits 111 are arranged substantially in parallel with a predetermined interval. The present invention is not limited to the shape and number of fixed slits 111. Further, the fixed slit 111 may be disposed with the longitudinal direction of the slit directed in the left-right direction of the vehicle (shown in FIG. 2), or may be disposed with the longitudinal direction of the slit directed in the vertical direction of the vehicle (FIG. 15). Shown in the figure). Or you may arrange | position the longitudinal direction of the fixed slit 111 inclining with respect to the up-down direction of a vehicle (not shown).

(Basic structure of the first movable plate)
The basic structure of the first movable plate 120A will be described by taking the air mix mechanism 100 of the first example as an example. As shown in FIG. 1, the first movable plate 120 </ b> A is disposed so as to block the flow of air passing through the heater core 14, and as shown in FIGS. Abut or separate. FIG. 7 is a perspective view showing an example of the first movable plate in the air mix mechanism of the first example. As shown in FIG. 7, the first movable plate 120A is a plate-shaped member. The vertical cross-sectional shape of the first movable plate 120A is, for example, a straight shape (shown in FIG. 7) or a shape curved in a convex manner toward the downstream side of the air passage (shown in FIG. 1).

  An example of a preferable form of the shape of the case for suppressing air from leaking from other than the slits 111 and 121 at both ends of the air mix mechanism 100 will be described. When the first movable plate 120A and the second movable plate 120B are arranged on the upstream side of the air passage 12 relative to the fixed plate 110, the case 13 is in contact with the end of the fixed plate 110 as shown in FIG. The air flow blocking structure is preferable. Unintentional air leakage from other than the slits 111 and 121 at the end of the air mix mechanism 100 can be suppressed.

  A slit (hereinafter also referred to as a movable slit) 121 provided in the first movable plate 120A is formed by a through-hole provided through the first movable plate 120A in the thickness direction. As shown in FIG. 3B, each movable slit 121 is preferably composed of one through hole. In the present embodiment, it is preferable that the plurality of movable slits 121 are arranged substantially in parallel with a predetermined interval. The present invention is not limited to the shape and number of movable slits 121. Further, the movable slit 121 may be arranged with the longitudinal direction of the slit directed in the left-right direction of the vehicle (shown in FIG. 3B), or may be arranged with the longitudinal direction of the slit directed in the vertical direction of the vehicle. (Illustrated in FIG. 16 (b)). Or you may arrange | position the longitudinal direction of the fixed slit 111 inclining with respect to the up-down direction of a vehicle (not shown). The movable slit 121 and the fixed slit 111 are preferably arranged with their longitudinal directions aligned.

  In FIG. 2, the dotted line Pa indicates the position of the movable slit 121 when the first movable plate 120 </ b> A contacts the fixed plate 110. When the first movable plate 120 </ b> A comes into contact with the fixed plate 110, the fixed slit 111 and the movable slit 121 are in a positional relationship that does not overlap each other, and the movable slit 121 comes into contact with the plate surface between the fixed slits 111. Also in FIG. 15, the dotted line Pa indicates the position of the movable slit when the first movable plate comes into contact with the fixed plate.

(Basic structure of the second movable plate)
As shown in FIG. 1, the second movable plate 120 </ b> B is disposed so as to block the flow of air that bypasses the heater core 14, and against the cold air side region 110 </ b> B of the fixed plate 110 as shown in FIGS. 4 to 6. Touch or separate. The second movable plate 120B has the same basic structure as that of the first movable plate 120A.

  In FIG. 2, a dotted line Pb indicates the position of the movable slit 121 when the second movable plate 120 </ b> B contacts the fixed plate 110. When the second movable plate 120B comes into contact with the fixed plate 110, the fixed slit 111 and the movable slit 121 are in a positional relationship so as not to overlap each other, and the movable slit 121 comes into contact with the plate surface between the fixed slits 111. Also in FIG. 15, the dotted line Pb indicates the position of the movable slit when the second movable plate abuts on the fixed plate.

  As shown in FIG. 1, the first movable plate 120 </ b> A and the second movable plate 120 </ b> B are preferably arranged on the upstream side of the air passage 12 with respect to the fixed plate 110. The first movable plate 120A and the second movable plate 120B are pressed toward the fixed plate 110 by the blown air, and unintended air leakage in the fully closed state can be suppressed.

(Structure of the rotating shaft in the air mix mechanism of the first example)
As shown in FIG. 1, the rotation shaft 130 is disposed at a boundary portion between the hot air side region 110 </ b> A and the cold air side region 110 </ b> B of the fixed plate 110. For example, the rotation shaft 130 may be rotatably supported by the case 13 or may be rotatably supported on the surface of the fixed plate 110 on the first movable plate 120A and the second movable plate 120B side. . It is preferable that the rotation shaft 130 is one. The air mix mechanism 100 can be further downsized. As a result, the vehicle air conditioner 10 can be downsized.

(Arm structure in the air mix mechanism of the first example)
FIG. 8 is a perspective view showing an example of an arm in the air mix mechanism of the first example. In the air mixing mechanism 100 of the first example, the arm 140 is preferably a plate-like member as shown in FIG. The shape of the arm 140 is not particularly limited, and is, for example, a fan shape (shown in FIG. 8) or a triangular shape (shown in FIG. 4). The arm 140 is fixed to the rotation shaft 130. The arm 140 may be separate from the rotation shaft 130 or may be integrated with the rotation shaft 130.

  The first engagement portion 141 is a notch provided in the arm 140, for example. Although a groove is shown as an example of the notch in FIG. 8, the notch may be a hole (not shown) or a depression (not shown). The first engagement portion 141 is provided on a first direction D11 that is orthogonal to the axial direction of the rotation shaft 130.

  The second engagement portion 142 is a notch provided in the arm 140, for example. Although a groove is shown as an example of the notch in FIG. 8, the notch may be a hole (not shown) or a depression (not shown). The second engaging portion 142 is provided on the second direction D12 that intersects the first direction D11. The second direction D12 is preferably a direction substantially orthogonal to the first direction D11. Here, “substantially orthogonal” means that the angle θ1 formed by the first direction D11 and the second direction D12 is 80 to 110 °. More preferably, θ1 is 85 to 105 °.

(Mounting structure of fixed plate, first movable plate and second movable plate in air mix mechanism of first example)
As shown in FIG. 4, the first rail 151 is connected to the end of the fixed plate 110 on the hot air side region 110 </ b> A side. Further, the second rail 152 is connected to the end of the fixed plate 110 on the cold air side region 110B side. For example, in FIG. 4, the first rail 151 and the second rail 152 are attached to the inner wall of the case 13 (shown in FIG. 1). The first rail 151 and the second rail 152 are preferably fixed to the inner wall of the case 13. The first rail 151 and the second rail 152 may be separate from the case 13 or may be formed integrally with the case 13. In the present embodiment, the method of attaching the first rail 151 and the second rail 152 is not limited to this, and may be attached to the fixed plate 110, for example. The first rail 151 and the second rail 152 may be attached to the surface of the fixed plate 110, or may be attached to pins 112 and 113 provided at both ends of the fixed plate 110, respectively. The shapes of the first rail 151 and the second rail 152 are not particularly limited. For example, the first rail 151 and the second rail 152 may have a parallel line shape (not shown) in addition to the annular shape shown in FIG.

  As shown in FIG. 4, one end of the first movable plate 120 </ b> A has a first engagement shaft 122, and the first engagement shaft 122 engages with the first engagement portion 141. The other end of the first movable plate 120A has a first pin 123, and the first pin 123 is slidably engaged with the first rail 151. The first engagement shaft 122 is preferably provided in a portion where the corner portion of the first movable plate 120A is recessed. The outer shape of the air mix mechanism 100 can be made into a shape with few protruding portions, and is easier to arrange in the case 13.

  As shown in FIG. 4, one end of the second movable plate 120 </ b> B has a second engagement shaft 124, and the second engagement shaft 124 engages with the second engagement portion 142. The other end of the second movable plate 120B has a second pin 125, and the second pin 125 is slidably engaged with the second rail 152. The second engagement shaft 124 and the second pin 125 are preferably provided in a portion where the corner of the second movable plate 120B is recessed. The outer shape of the air mix mechanism 100 can be made into a shape with few protruding portions, and is easier to arrange in the case 13.

(Operation of the air mix mechanism in the first example)
In the full hot mode, as shown in FIG. 4, the second engaging portion 142 comes close to the fixed plate 110 and the first engaging portion 141 is fixed to the fixed plate 110 as the rotating shaft 130 rotates. When the second movable plate 120B contacts the fixed plate 110, the first movable plate 120A moves away from the fixed plate 110. At this time, the first movable plate 120A and the fixed plate 110 allow the air passing through the heater core to open the slits 111 and 121, and the second movable plate 120B and the fixed plate 110 are slits. Blocks air flow around the heater core by closing 111 and 121.

  In the air mix mode, as shown in FIG. 5, when the first engagement portion 141 and the second engagement portion 142 move to positions away from the fixed plate 110 as the rotation shaft 130 rotates, The first movable plate 120A and the second movable plate 120B are separated from the fixed plate 110. At this time, the first movable plate 120A and the fixed plate 110 allow the air passing through the heater core to open the slits 111 and 121, and the second movable plate 120B and the fixed plate 110 are slits. The air which bypasses a heater core is opened by releasing the blockage of 111,121.

  In the full cool mode, as shown in FIG. 6, the first engaging portion 141 comes close to the fixed plate 110 and the second engaging portion 142 is fixed to the fixed plate 110 as the rotating shaft 130 rotates. When the first movable plate 120 </ b> A comes into contact with the fixed plate 110, the second movable plate 120 </ b> B moves away from the fixed plate 110. At this time, the first movable plate 120A and the fixed plate 110 block the air flow passing through the heater core by closing the slits 111 and 121, and the second movable plate 120B and the fixed plate 110 are slits. The air which bypasses a heater core is opened by releasing the blockage of 111,121.

(Preferred points of the air mix mechanism of the first example)
Since the air mixing mechanism 100 of the first example can increase the area where the first movable plate and the second movable plate are in contact with the fixed plate, as shown in FIG. It can be provided in the vicinity of the boundary between the region 110A and the cold air side region 110B. As a result, it is preferable in that the amount of blown air passing through the air mix mechanism can be increased.

(Air mixing mechanism of the second example)
With reference to FIGS. 9 to 13, a second example of the air mix mechanism 200 will be described. The air mixing mechanism 200 of the second example has the same basic structure of the fixed plate 210, the first movable plate 220A and the second movable plate 220B as the air mixing mechanism 100 of the first example.

(Structure of the rotating shaft in the air mix mechanism of the second example)
As shown in FIGS. 9 to 11, the rotation shaft 230 is disposed at a predetermined interval from the fixed plate 210. For example, the rotation shaft 230 is rotatably supported by the case 13. It is preferable that the rotation shaft 230 is one. The air mix mechanism 200 can be further downsized. As a result, the vehicle air conditioner can be downsized.

(Arm structure in the air mix mechanism of the second example)
FIG. 13 is a perspective view showing an example of an arm in the air mix mechanism of the second example. In the air mixing mechanism 200 of the second example, the arm 240 has a rail extending in the first direction D21 orthogonal to the axial direction of the rotation shaft 230 as the first engagement portion 241, and the second engagement portion 242 as the second engagement portion 242. The rail extends in a second direction D22 different from the first direction D21. Here, the second direction D22 different from the first direction D21 means that the angle θ2 formed by the first direction D21 and the second direction D22 is 120 to 240 ° toward the upstream of the airflow. Furthermore, as shown in FIG. 13, it is more preferable that the second direction D22 extends to the opposite side of the first direction D21 (θ2 = 180 °). The arm 240 is fixed to the rotating shaft 230. The arm 240 may be separate from the rotation shaft 230 or may be integrated with the rotation shaft 230.

(Mounting structure of fixed plate, first movable plate and second movable plate in air mix mechanism of second example)
One end portion of the first movable plate 220A has a first engagement pin 222 as shown in FIG. 12, and the first engagement pin 222 has a first engagement portion 241 as shown in FIG. Slide in the rail. The other end of the first movable plate 220A has a first connecting shaft 223 as shown in FIG. 12, and the first connecting shaft 223 is rotatably connected to the fixed plate 210 as shown in FIG. To do. The method of connecting the first connecting shaft 223 to the fixing plate 210 is not particularly limited. For example, an engaging claw (not shown) is provided on the surface of the fixing plate 210, and the first connecting shaft 223 is engaged with the engaging claw. It is a method to make it.

  As shown in FIG. 9, one end portion of the second movable plate 220 </ b> B has a second engagement pin 224, and the second engagement pin 224 slides in the rail of the second engagement portion 242. . The other end of the second movable plate 220B has a second connecting shaft 225, and the second connecting shaft 225 is rotatably connected to the fixed plate 210. The method of connecting the second connecting shaft 225 to the fixing plate 210 is not particularly limited. For example, an engaging claw (not shown) is provided on the surface of the fixing plate 210 and the second connecting shaft 225 is engaged with the engaging claw. It is a method to make it.

(Operation of the air mix mechanism in the second example)
In the full hot mode, as shown in FIG. 9, as the rotation shaft 230 rotates, the second engagement portion 242 approaches the fixed plate 210 and the first engagement portion 241 is fixed plate 210. When the second movable plate 220 </ b> B comes into contact with the fixed plate 210, the first movable plate 220 </ b> A is separated from the fixed plate 210. At this time, the first movable plate 220A and the fixed plate 210 allow the air passing through the heater core to open the slits 211 and 221, and the second movable plate 220B and the fixed plate 210 have a slit. The flow of air that blocks 211 and 221 and bypasses the heater core is blocked.

  In the air mix mode, as shown in FIG. 10, when the first engagement portion 241 and the second engagement portion 242 move to a position away from the fixed plate 210 as the rotation shaft 230 rotates, The first movable plate 220A and the second movable plate 220B are separated from the fixed plate 210. At this time, the first movable plate 220A and the fixed plate 210 allow the air passing through the heater core to open the slits 211 and 221, and the second movable plate 220B and the fixed plate 210 have a slit. Air that bypasses the heater core is released by opening the blockage of 211 and 221.

  In the full cool mode, as shown in FIG. 11, the first engagement portion 241 approaches the fixed plate 210 and the second engagement portion 242 moves to the fixed plate 210 as the rotation shaft 230 rotates. When the first movable plate 220A comes into contact with the fixed plate 210, the second movable plate 220B moves away from the fixed plate 210. At this time, the first movable plate 220A and the fixed plate 210 block the air flow passing through the heater core by closing the slits 211 and 221, and the second movable plate 220B and the fixed plate 210 are slits. Air that bypasses the heater core is released by opening the blockage of 211 and 221.

(Preferred points of the air mix function of the second example)
Since the air mixing mechanism 200 of the second example can rotate the first movable plate around the first connecting shaft and can rotate the second movable plate around the second connecting shaft, 2 It is preferable in that the movable plate can be moved more smoothly.

(Air mixing mechanism of the third example)
With reference to FIG. 14, the air mix mechanism 300 of the 3rd example is demonstrated. The air mixing mechanism 300 of the third example has the same basic structure of the fixed plate 310, the first movable plate 320A and the second movable plate (not shown) as the air mixing mechanism 100 of the first example. The air mix mechanism 300 of the third example has a first arm 340 connected to the first movable plate 320A as an arm and a second arm (not shown) connected to the second movable plate (not shown), and rotates. The shaft includes a first rotation shaft 330 to which the first arm 340 is fixed and a second rotation shaft (not illustrated) to which the second arm (not illustrated) is fixed. Since the cold air side area of the second movable plate and the fixed plate has the same structure as the hot air side region of the first movable plate and the fixed plate, the hot air side of the first movable plate 320A and the fixed plate with reference to FIG. The description will be given by taking the area 310A as an example.

  One end of the first movable plate 320 </ b> A has a first engagement shaft 322, and the first engagement shaft 322 engages with a first engagement portion 341 provided on the first arm 340. The first movable plate 320A has a cantilever structure, and the other end of the first movable plate 320A is not engaged or supported. A link 360 is attached to the first arm 340, and one end of the link 360 has a pin 361 that slides in a long hole 326 provided in the first movable plate 320A.

  In the air mixing mechanism 300 of the third example, in the full hot mode, the first movable plate 320A is separated from the fixed plate 310, and the second movable plate (not shown) is in contact with the fixed plate 310. Thus, the rotation of the first rotation shaft 330 and the second rotation shaft (not shown) is interlocked. In the air mix mode, the first rotary shaft 330 and the first movable shaft 320A are separated from the fixed plate 310 and the second movable plate (not shown) is separated from the fixed plate 310. The rotation of two rotation shafts (not shown) is interlocked. Further, in the full cool mode, the first rotating shaft 330 is arranged such that the first movable plate 320A is in contact with the fixed plate 310 and the second movable plate (not shown) is separated from the fixed plate 310. And the rotation of the second rotation shaft (not shown) is interlocked.

  As a modification of the air mixing mechanism 300 of the third example, the first arm 340 and the second arm (not shown) may be fixed to one rotating shaft.

  FIG. 17 is a perspective view showing an example of an air guide. In the vehicle air conditioner according to the present embodiment, when the fixed plate 110 is located downstream of the first movable plate (not shown) and the second movable plate (not shown), the fixed slit 111 is the fixed slit. The air guide 114 is disposed along the longitudinal direction of the fixed slit 111 and protrudes from the surface of the fixed plate 110 to the downstream side of the air passage. It is preferable.

  The air guide 114 is a plate-like member standing from the peripheral edge of the fixed slit 111. The air blown through the cold air passage (cold air) is stronger in wind power than the air blown through the hot air passage (hot air), so the flow of hot air is likely to be hindered by the flow of cold air. By providing the guide 114, it can suppress that the flow of warm air is obstructed by the flow of cold air. In general, the air conditioned at the downstream side of the air mix mechanism is required to have an appropriate temperature difference between the upper and lower air. By arranging the air guide in the vertical direction, it is possible to guide the warm air upward and obtain air having an appropriate temperature difference.

  When the air guide 114 is provided on the fixed plate 110, the air guide 114 is preferably disposed in the cold air side region 110B. Hot air can be more efficiently guided above the air conditioner. Moreover, it is possible to make warm air easily flow through the vent opening or the defroster opening.

  When the first movable plate (not shown) and the second movable plate (not shown) are on the downstream side of the air passage with respect to the fixed plate, the air guide is provided on the second movable plate (not shown).

  FIG. 18 is a diagram illustrating an example of the insertion unit. FIG. 19 is a sectional view taken along line AA in FIG. In the vehicle air conditioner according to the present embodiment, the air mix mechanism has an insertion portion 127 protruding from the surface of the second movable plate 120B, and the second movable plate 120B is a fixed plate (not shown). It is preferable to fit into the fixed slit when abutting on. The insertion portion 127 may have a protruding shape (not shown) in addition to the frame shape as shown in FIG. The insertion portion 127 has an outer dimension that is slightly smaller than the inner dimension of the fixed slit so as to be fitted into the fixed slit. When the second movable plate 120B comes into contact with a fixed plate (not shown), the insertion portion 127 can block the fixed slit to improve airtightness and suppress unintended air leakage.

  An insertion part is good also as a form which makes it protrude from the surface of a fixed board, and closes a movable slit. Alternatively, the insertion portion may protrude from the surface of the first movable plate.

  FIG. 20 is a diagram illustrating an example of a seal portion. FIG. 21 is a sectional view taken along line BB in FIG. In the vehicle air conditioner according to the present embodiment, the second movable plate 120B has a seal portion 128 on the surface of the second movable plate 120B on the fixed plate side, and the seal portion 128 has each movable slit 121. When the second movable plate 120B surrounds and contacts the fixed plate (not shown), the entire circumference of the seal portion 128 is sandwiched and compressed between the second movable plate 120B and the fixed plate (not shown). It is preferable. The seal portion 128 may be a known material having elastic force (for example, urethane foam, EPDM (ethylene polypropylene diene monomer), NBR (nitrile buteneene rubber), or H-NBR (hydrogenated nitrene)). The seal portion 128 may be separate from the second movable plate 120B or may be integrally formed. As shown in FIG. 20, the seal portion 128 preferably has a shape surrounding each slit 121. When the second movable plate 120B comes into contact with a fixed plate (not shown), the seal portion 128 is pressed against the surface of the fixed plate (not shown) on the second movable plate 120B side, so that the movable slit 121 is fixed to the fixed slit. The air passage toward (not shown) can be blocked to improve airtightness, and unintended air leakage can be suppressed. Further, the seal portion 128 and the insertion portion 127 (shown in FIGS. 18 and 19) are preferably used in combination. Unintended air leakage can be more effectively suppressed.

  In FIGS. 20 and 21, the second movable plate 120 </ b> B has been described as having the seal portion 128. It is good also as a form which has 128. Alternatively, the first movable plate may have a seal portion 128 on the surface of the first movable plate on the fixed plate side.

(Operation of air conditioning equipment for vehicles)
Next, the operation of the vehicle air conditioner will be described with reference to FIG. 1, FIG. 22, and FIG.

  The full hot mode is a mode for heating the passenger compartment. In the full hot mode, as shown in FIG. 1, normally, the defroster door 6 is closed, the vent door 7 is closed, and the foot door is open. In the air mix mechanism 100, the first movable plate 120A is separated from the fixed plate 110, and the second movable plate 120B is in contact with the fixed plate 110. Then, warm air that has been warmed through the heater core 14 is blown to the foot opening 18.

  The air mix mode is a mode for controlling the temperature in the passenger compartment by mixing the air that has passed through the heater core 14 and the air that has not passed through the heater core 14. In the air mix mode, as shown in FIG. 22, normally, the defroster door 6 is closed, the vent door 7 is opened, and the foot door 8 is set to open. In the air mix mechanism 100, the first movable plate 120A is separated from the fixed plate 110, and the second movable plate 120B is separated from the fixed plate 110. Then, the warm air that has been warmed through the heater core 14 and the air or cold air that has not passed through the heater core 14 are mixed in the air mix chamber 12c, and the temperature-controlled air is supplied to the vent opening 17 and the foot opening. 18 is blown. Although not shown, the defroster door 6 may be set open, the vent door 7 closed, and the foot door 8 open. In this case, the temperature-controlled air is blown to the defroster opening 16 and the foot opening 18.

  The full cool mode is a mode for cooling the passenger compartment. In the full cool mode, as shown in FIG. 22, normally, the defroster door 6 is closed, the vent door 7 is opened, and the foot door 8 is closed. In the air mix mechanism 100, the first movable plate 120A is in contact with the fixed plate 110, and the second movable plate 120B is separated from the fixed plate 110. Then, air or cold air that has not passed through the heater core 14 is blown to the vent opening 17.

  As described above, in the first, second, and third air mix mechanisms 100, 200, and 300, the first movable plate 120A and the second movable plate 120B are engaged with the arms 140, 240, and 340 to rotate. As the shafts 130, 230, and 330 rotate, the positions are changed so as to contact or separate from the fixed plates 110, 210, and 310. Therefore, in the air mix mechanism 100, 200, 300, at least in the part where the arms 140, 240, 340 are located, the first movable plate 120A, 220A, 320A and the second movable plate 120B, 220B, 320B are the fixed plate 110, The movement distance for separating from 210 and 310 is required. By the way, normally, the evaporator 15 is arrange | positioned upstream of the air mix mechanism 100,200,300 as shown in FIG.1, FIG.22, FIG.23, and the downstream of the evaporator 15 becomes a plane. In order to reduce the size of the vehicle air conditioner 10, it is desirable to install the air mix mechanisms 100, 200, and 300 near the downstream side of the evaporator 15. For this purpose, the positions of the first movable plates 120A, 220A, and 320A when the first movable plates 120A, 220A, and 320A are farthest from the fixed plates 110, 210, and 310 (for example, shown in FIGS. 4 and 9), The positions of the second movable plates 120B, 220B, and 320B when the second movable plates 120B, 220B, and 320B are farthest from the fixed plates 110, 210, and 310 (for example, shown in FIGS. 6 and 11) are the evaporator 15 positions. What is necessary is just to comprise so that the plane of the downstream of this may be followed. That is, taking the first movable plate 120A of FIG. 4 as an example, the distance between the end of the first movable plate 120A on the arm 140 side and the plane on the downstream side of the evaporator 15 is the rail 151 side of the first movable plate 120A. It is preferable that the distance is equal to the distance between the end of this and the plane on the downstream side of the evaporator 15. As a specific example for such a configuration, for example, it is preferable that the fixing plates 110, 210, 310 have a cross-sectional shape that is convex toward the downstream side of the air passage. By comprising in this way, the evaporator 15 and the air mix mechanism 100, 200, 300 can be arrange | positioned more closely, and the vehicle air conditioner 10 can be reduced in size. It is more preferable that the fixing plates 110, 210, and 310 have a cross-sectional shape that is convexly curved toward the downstream side of the air passage. Further, the fixed plates 110, 210, and 310 have a cross-sectional shape that is convexly curved toward the downstream side of the air passage, and the first movable plates 120A, 220A, and 320A and the second movable plates 120B, 220B, and 320B are also fixed plates. In order to correspond to 110, 210, 310, it is desirable to have a cross-sectional shape that is convexly curved toward the downstream side of the air passage. The air pressure on the upstream side of the air mix mechanisms 100, 200, 300 can be made uniform, and the wind speed of the air passing through the air mix mechanisms 100, 200, 300 can be made uniform. The cross-sectional shapes of the first movable plates 120A, 220A, 320A and the second movable plates 120B, 220B, 320B are downstream of the air passage so as to correspond to the fixed plates 110, 210, 310 on the downstream side of the air passage. It may be curved in a convex manner and may be planar so as to correspond to the plane of the evaporator 15 on the upstream side of the air passage.

(Vehicle air conditioner with multiple air mix mechanisms)
In order to improve temperature controllability, the vehicle air conditioner 10 includes a set of the hot air passage 12a, the cold air passage 12b, and the air mix chamber 12c as described above. A configuration having a hot air passage 12a, a cold air passage 12b, and a mix chamber 12c is known. FIG. 24 shows an example of a vehicle air conditioner 10A having two sets of hot air passages 12a, cold air passages 12b, and a mix chamber 12c. Depending on the number of air passages 12a, 12b, and 12c, two sets of air Mix mechanisms 100a and 100b are arranged. In FIG. 24, the air mixing mechanism 100 of the first example is arranged as an example, but the air mixing mechanism 200 of the second example or the air mixing mechanism 300 of the third example may be used. In the vehicle air conditioner 10A shown in FIG. 24, for example, in the differential foot mode, air whose temperature has been adjusted by the air mix mechanism 100a is blown to the defroster opening 16 by switching the switching door 9, and the air mix mechanism 100b The adjusted air is blown to the foot opening 18. Thus, the air mix mechanisms 100a and 100b can be arranged according to the number of sets of the air passages 12.

6 Defroster door 7 Vent door 8 Foot door 9 Switching door 10, 10A Vehicle air conditioner 12 Air passage 12a Hot air passage 12b Cold air passage 12c Air mix chamber 13 Case 14 Air heating device (heater core)
15 Air cooling device (evaporator)
16 Defroster opening 17 Vent opening 18 Foot opening 100, 100a, 100b Air mix mechanism 110 Fixed plate 110A Hot air side area 110B Cold air side area 111 Slit (fixed slit)
112, 113 Pin 114 Air guide 120A First movable plate 120B Second movable plate 121 Slit (movable slit)
122 First engagement shaft 123 First pin 124 Second engagement shaft 125 Second pin 127 Insertion portion 128 Seal portion 130 Rotating shaft 140 Arm 141 First engagement portion 142 Second engagement portion 151 First rail 152 First 2 rails 200 Air mix mechanism 210 Fixed plate 210A Hot air side area 210B Cold air side area 211 Slit (fixed slit)
220A First movable plate 220B Second movable plate 221 Slit (movable slit)
222 First engagement pin 223 First connection shaft 224 Second engagement pin 225 Second connection shaft 230 Rotating shaft 240 Arm 241 First engagement portion 242 Second engagement portion 300 Air mix mechanism 310 Fixed plate 310A Hot air Side region 320A First movable plate 322 First engagement shaft 326 Long hole 330 First rotation shaft 340 First arm 341 First engagement portion 360 Link 361 Pins D11, D21 First direction D12, D22 Second direction

Claims (10)

A case having an air passage for blowing air inside,
An air heating device disposed inside the case for heating the blown air;
An air mixing mechanism that is disposed upstream of the air passage relative to the air heating device and that adjusts a ratio of an air amount passing through the air heating device and an air amount bypassing the air heating device; In the air conditioner,
The air mix mechanism engages a fixed plate, a first movable plate, a second movable plate, a rotating shaft, a first engagement portion that engages the first movable plate, and the second movable plate. An arm that has a second engaging portion and is fixed to the rotating shaft,
Each of the fixed plate, the first movable plate, and the second movable plate has a slit provided so as to penetrate in the plate thickness direction,
When the first movable plate abuts on the fixed plate, the fixed plate and the slit are closed to block the flow of air passing through the air heating device, and when the first movable plate is separated from the fixed plate, Flow the air passing through the air heating device by opening the slits with the fixing plate,
When the second movable plate abuts the fixed plate, the second movable plate closes the fixed plate and the slit to block the air flow bypassing the air heating device, and when the second movable plate is separated from the fixed plate, the second movable plate Flow the air that bypasses the air heating device by opening the slits with the fixing plate,
As the air mix mechanism rotates the rotation shaft,
(1) A full hot mode in which the first movable plate is separated from the fixed plate and the second movable plate is in contact with the fixed plate.
(2) a full cool mode in which the first movable plate is in contact with the fixed plate and the second movable plate is separated from the fixed plate; and
(3) An air mix mode in which the first movable plate is separated from the fixed plate and the second movable plate is separated from the fixed plate;
A vehicle air conditioner having the following three modes. A first rail connected to one end of the fixed plate;
A second rail connected to the other end of the fixed plate,
The first engagement portion is provided on a first direction orthogonal to the axial direction of the rotation shaft,
The second engagement portion is provided on a second direction intersecting the first direction,
One end of the first movable plate has a first engagement shaft that engages with the first engagement portion,
The other end of the first movable plate has a first pin that slides in the first rail,
One end portion of the second movable plate has a second engagement shaft that engages with the second engagement portion,
2. The vehicle air conditioner according to claim 1, wherein the other end of the second movable plate has a second pin that slides in the second rail. The first engagement portion is a rail extending in a first direction orthogonal to the axial direction of the rotation shaft,
The second engaging portion is a rail extending in a second direction different from the first direction;
One end portion of the first movable plate has a first engagement pin that slides in a rail of the first engagement portion,
The other end of the first movable plate has a first connection shaft that is rotatably connected to the fixed plate,
One end of the second movable plate has a second engagement pin that slides in the rail of the second engagement portion,
2. The vehicle air conditioner according to claim 1, wherein the other end of the second movable plate has a second connection shaft that is rotatably connected to the fixed plate.   The vehicle air conditioner according to any one of claims 1 to 3, wherein the first movable plate and the second movable plate are arranged on the upstream side of the air passage with respect to the fixed plate. apparatus.   The vehicle air conditioner according to any one of claims 1 to 4, wherein the fixing plate has a cross-sectional shape that protrudes toward the downstream side of the air passage.   6. The vehicle air conditioner according to claim 5, wherein the first movable plate and the second movable plate have a cross-sectional shape that protrudes toward the downstream side of the air passage. The slit is arranged with the longitudinal direction of the slit facing the vertical direction of the vehicle,
Of (a) or (b) of (a) the fixed plate and (b) the second movable plate, the plate on the downstream side of the air passage is disposed along the longitudinal direction of the slit provided in the plate. The vehicle air conditioner according to any one of claims 1 to 6, further comprising an air guide projecting downstream of the air passage.   The vehicle air conditioner according to any one of claims 1 to 7, wherein the number of the rotation shaft is one. The air mix mechanism has an insertion portion that protrudes from the surface of at least one of (a) or (b) of (a) the fixed plate, (b) the first movable plate, and the second movable plate. And
The vehicle air conditioning according to any one of claims 1 to 8, wherein the insertion portion fits into the slit when the first movable plate or the second movable plate abuts on the fixed plate. apparatus. (A) At least one of (a) or (b) of the fixed plate, (b) the first movable plate, and the second movable plate has a seal portion,
The seal portion surrounds each slit,
When the first movable plate or the second movable plate contacts the fixed plate, the entire circumference of the seal portion is sandwiched between the first movable plate or the second movable plate and the fixed plate, and The vehicle air conditioner according to any one of claims 1 to 9, wherein the vehicle air conditioner is compressed.

Images