JP6081211B2 - Link device and vehicle air conditioner using the same - Google Patents

Description

  The present invention relates to a link device for rotating a plurality of dampers at an appropriate timing, and a vehicle air conditioner using the link device.

  In a vehicle air conditioner, a plurality of cam grooves are provided along arcuate outer peripheral edges in order to open and close a plurality of dampers rotatably provided in an air flow path in a unit case at a predetermined timing, A link plate having a central portion rotatably supported around an axis and a plurality of levers each having a pin slidably inserted into a plurality of cam grooves, each pin being rotated by rotating the link plate A link device is used in which each lever is rotated and displaced via each of the levers to rotate each damper.

  In such a link device, it is necessary to satisfy both conflicting problems of downsizing the link plate and reducing the operating force from the viewpoints of mountability on a vehicle and operability. In other words, in order to reduce the size of the link plate, it is necessary to reduce the radial dimension and the circumferential dimension. However, if the radial dimension is reduced, the pressure angle between the cam groove and the pin that fits into the groove is reduced. As a result, the problem arises that the operating force increases.

  Therefore, as shown in Patent Document 1, a plurality of cam grooves are continuously formed in the circumferential direction by one groove through a common idle groove along the outer peripheral edge of the link plate, There has been provided an effectively reduced external shape in both the radial direction and the circumferential direction. Further, in Patent Document 2, a plurality of cam grooves that are independent from one common cam groove are provided separately, and each pin does not enter the other independent cam groove and is guided to the corresponding independent cam groove. As described above, there is provided a device in which the length of the pin and the depth of the cam groove are changed, and a guide rib (protrusion) is provided in a predetermined range along the common cam groove.

Japanese Patent No. 4434072 JP 2011-241897 A

  In the one described in Patent Document 1, since the two cam grooves can be arranged at the maximum outer position in the radial direction, the pressure angle between the cam groove and the pin fitted into the groove is set to a required angle or less, An increase in operating force can be suppressed. However, since the two cam grooves are only continuous in the circumferential direction through a common idle groove, the radial dimension of the link plate can be suppressed, but the circumferential dimension can be suppressed. However, there is a limit to downsizing, and there are problems such as restrictions on mountability to vehicles and layouts of other components.

  Further, in Patent Document 2, although some cam grooves are described as common grooves, each pin does not enter another independent cam groove and is introduced into a corresponding independent cam groove. As described above, the length of the pin and the depth of the cam groove must be changed, and a guide rib (projection) must be provided along the common groove, which complicates the structure and increases the thickness direction dimension of the link plate. Therefore, there is a problem to be improved in terms of downsizing, weight reduction, and cost reduction of the link device.

  The present invention has been made in view of such circumstances, and is compatible with downsizing of the link device and reduction of the operating force, and does not restrict the mountability to the vehicle and the layout of the component devices, An object of the present invention is to provide a link device that can increase the degree of freedom and achieve operability improvement, weight reduction, and cost reduction, and a vehicle air conditioner using the link device.

In order to solve the above-described problems, the link device of the present invention and the vehicle air conditioner using the same employ the following means.
That is, the link device according to the present invention includes a link plate, in which a first cam groove and a second cam groove are provided along an arcuate outer peripheral edge portion, and a center portion is rotatably supported around an axis. A first lever and a second lever having a first pin and a second pin that are slidably fitted into the first cam groove and the second cam groove, and the first and second pins are rotated by the rotation of the link plate; In the link device that rotates and displaces the first lever and the second lever via the damper, respectively, the first cam groove and the second cam groove are formed on the front and back surfaces of the link plate. One end portions are provided so as to overlap each other, and the first pin and the second pin can be fitted from the front side and the back side of the link plate, respectively, The overlap portion of the first cam groove and the second cam groove is through leaving a part of the bottom of the respective cam grooves, the bottom by Ri before Symbol second pin and the first pin to the edge of the corresponding characterized in that for the second cam groove and the first cam groove is configured to guide to.

A first lever having a first pin and a second pin, which is provided with a rotatable link plate provided with a first cam groove and a second cam groove along an arcuate outer peripheral edge, and has a first pin and a second pin. In the link device that rotates the damper via the two levers, there are conflicting problems such as downsizing the link plate and reducing the operating force. In other words, in order to reduce the size of the link plate, it is necessary to reduce the radial dimension and the circumferential dimension. However, if the radial dimension is reduced, the pressure angle between the cam groove and the pin that fits into the groove is reduced. It is known that the operating force increases with the increase in the size, and in such circumstances, it is required to achieve both a reduction in the size of the link plate and a reduction in the operating force.
According to the present invention, the first cam groove and the second cam groove provided along the arc-shaped outer peripheral edge of the link plate are overlapped with each other on the front and back surfaces of the link plate. The first pin and the second pin can be fitted from the front surface side and the back surface side of the link plate, respectively, and the overlap portions of the first cam groove and the second cam groove are part of the bottom of each cam groove. Since the other second pin and the first pin can be guided to the corresponding second cam groove and the first cam groove by the edge of the bottom portion, the two first cam grooves and the second By arranging the cam grooves at the outermost peripheral positions of the front and back of the link plate, the radial position of each cam groove is maximized, and the pressure angle between each groove and the pin inserted into the groove is made as much as possible. It is possible to reduce the operating force to fence. Moreover, the circumferential direction dimension can be made small by the overlapping part by mutually overlapping the one end parts of two grooves. Furthermore, although the end parts of the first and second cam grooves provided on the front and back of the link plate are overlapped with each other, they pass through leaving a part of the bottom of each cam groove, and by the edge of the bottom Since the mating second pin and the first pin are guided in the respective cam grooves, a part of the cam groove is prevented by preventing each pin from entering the mating cam groove at the overlap portion of the cam groove. In spite of the overlapping, each pin can be reliably guided along each cam groove. Therefore, the link device can be expected to be smaller and more compact, resulting in lower cost, lighter weight, improved mountability, and improved flexibility in layout, while reducing the operability of the link device and improving operability. Can be improved.

  Furthermore, the link device of the present invention is the above link device, wherein the thickness of the outer peripheral edge portion where the first cam groove and the second cam groove of the link plate are provided is a depth including the bottom portion of one groove. The thickness is equivalent to the directional dimension.

  According to the present invention, the thickness of the outer peripheral edge portion where the first cam groove and the second cam groove of the link plate are provided is equal to the depth dimension including the bottom of one groove. The thickness of the outer peripheral edge of the link plate provided with the first cam groove and the second cam groove can be the same as that of the link plate provided with two cam grooves on one surface. Accordingly, not only the radial and circumferential dimensions of the link plate having the cam grooves on the front and back sides but also the thickness can be minimized, and the cost and weight of the link plate and the link device can be reduced.

  Furthermore, the link device according to the present invention is the link device according to any one of the above-described link devices, wherein the link plate includes a lever portion that connects a manual operation wire with the central portion interposed between the first cam groove and the second cam. It is provided on the opposite side to the groove.

  According to the present invention, the lever portion for connecting the manual operation wire to the link plate is provided on the opposite side of the first cam groove and the second cam groove across the center portion. By connecting a manual operation wire to the link plate, the link plate can be miniaturized in both the radial and circumferential directions, and an optimum link device for manual operation that can reduce the operation force is provided. Can do. Therefore, the present invention can be applied to a link device for manual operation, and the operability and operation feeling can be improved satisfactorily.

  Furthermore, the vehicle air conditioner according to the present invention includes the link device according to any one of claims 1 to 3, wherein the link plate is rotatably supported on an outer surface of the unit case, and the unit case. A first damper that is disposed in a first air flow path that is pivotable to open and close the first air flow path, and a second air flow path that is disposed in the unit case. And a rotatable second damper that opens and closes the second air flow path, the first damper being rotatable via the first lever, and the second lever via the second lever. The second damper is characterized by being rotatable.

  According to the present invention, any one of the above-described link devices in which the first damper and the second damper disposed in the first air channel and the second air channel in the unit case are installed on the outer surface thereof. The link lever of the link device is rotated, and the first lever and the second pin are inserted into the first cam groove and the second cam groove. By rotating and displacing the second lever, the first damper and the second damper disposed in the first air flow path and the second air flow path in the unit case are opened and closed at an appropriate timing, so that The temperature-controlled air blowing mode can be switched. Accordingly, the operation force of the link device can be reduced and the operability thereof can be improved, and the link device installed on the outer surface of the unit case can be reduced in size and size, thereby being disposed on the outer surface of the unit case. Thus, it is possible to improve the degree of freedom in layout of various unit components and to improve the mountability to a vehicle.

  Furthermore, the vehicle air conditioner of the present invention is the above-described vehicle air conditioner, wherein the first damper is a differential / face damper disposed in the first air flow path, and the second damper is the first damper. The foot damper is arranged in the two air flow paths.

  According to the present invention, the first damper is a differential / face damper disposed in the first air flow path, and the second damper is a foot damper disposed in the second air flow path. By rotating the link plate of the link device and opening and closing the first damper and the second damper, the differential / face damper and the foot damper, at an appropriate timing determined by the shapes of the first cam groove and the second cam groove, The air conditioning mode can be appropriately switched to a differential mode, a face mode, a foot mode, a differential / foot mode, a bi-level mode, etc., and the temperature of the passenger compartment can be controlled. Therefore, the operability of the differential / face damper and foot damper for switching the blowing mode can be improved, and the operating force can be reduced, and the link device for operating the damper can be made compact and compact, and the cost and weight can be reduced. It is possible to improve mountability and layout flexibility.

  Furthermore, in the vehicle air conditioner according to the present invention, in any one of the vehicle air conditioners described above, one end of a wire connected to a manual operation lever is connected to the lever portion provided in the link plate. The first damper and the second damper can be opened and closed by operating a manual operation lever.

  According to the present invention, one end of the wire connected to the manual operation lever is connected to the lever portion provided on the link plate, and the first damper and the second damper can be opened and closed by operating the manual operation lever. Therefore, by operating the manual operation lever, the lever portion and the link plate can be rotated via the wire, and the first damper and the second damper can be opened and closed. Therefore, in a vehicle air conditioner that switches the blowing mode by manual operation, the operating force can be reduced, and the operability and operation feeling can be improved satisfactorily.

  According to the link device of the present invention and the vehicle air conditioner using the link device, the link device can be expected to be downsized and compact, resulting in lower cost, lighter weight, improved mountability, and improved layout flexibility. At the same time, it is possible to reduce the operation force of the link device and improve the operability and operation feeling. In addition, by reducing the size of the link device installed on the outer surface of the unit case, the degree of freedom in layout of various unit components arranged on the outer surface of the unit case and the ease of mounting on the vehicle are improved. Can be achieved.

It is an external appearance perspective view of the principal part of the vehicle air conditioner incorporating the link device which concerns on one Embodiment of this invention. It is an external appearance perspective view from the upper left of the vehicle air conditioner shown in FIG. It is a top view of the link plate of the link apparatus shown in FIG. It is an AA cross-section equivalent figure in FIG. It is a BB cross-section equivalent figure in FIG. FIG. 4 is a cross-sectional view corresponding to a CC line in FIG. 3. FIG. 4 is a DD cross-sectional view in FIG. 3. It is an EE cross-section equivalent figure in FIG. FIG. 5 is a cross-sectional view corresponding to the FF cross section in FIG. 3. It is a GG cross-section equivalent figure in FIG. It is explanatory drawing of the state by which the pin of each lever was slidably inserted in the some cam groove of the link plate shown in FIG.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
1 is an external perspective view of a main part of a vehicle air conditioner incorporating a link device according to an embodiment of the present invention, FIG. 2 is an external perspective view from the upper left side, and FIG. A plan view of the device link plate is shown.
An air conditioning unit (HVAC unit; Air Conditioning Unit) 1 constituting a vehicle air conditioner includes a unit case 2 that forms an air flow path.

  In the unit case 2 of the HVAC unit 1, an evaporator, a heater core, and an air mix damper are disposed in order from the upstream side along the air flow path, and outside air or vehicle interior air (both inside air and air taken in from the blower unit) is arranged. Is cooled or heated and adjusted to a set temperature, and then the air is normally provided at three downstream outlets, that is, a differential outlet 3, a face outlet 4, and a foot outlet. From any one of 5, the air is selectively blown out into the passenger compartment through a duct connected to the three outlets 3 to 5.

  In order to open and close the air flow path in the unit case 2, that is, the first air flow path leading to the differential blow outlet 3 and the face blow opening 4 and the second air flow path communicating to the foot blow opening 5, a plurality (2 to 3) The blowout mode damper is rotatably arranged, and the three blowout ports 3 to 5 can be selectively opened and closed by the plurality (2 to 3) of blowout mode dampers. Here, an example in which two blowing mode dampers, ie, a differential / face damper (first damper) and a foot damper (second damper) are provided as the blowing mode damper will be described below.

The differential / face damper (first damper) and the foot damper (second damper) are opened and closed as follows.
(1) In the differential mode, the foot outlet 5 is closed with the foot damper, the face outlet 4 is closed with the differential / face damper, and the temperature-controlled air is blown out from the differential outlet 3.
(2) In the face mode, the foot outlet 5 is closed with the foot damper, the differential outlet 3 is closed with the differential / face damper, and the temperature-controlled air is blown out from the face outlet 4.
(3) In the foot mode, the foot blower outlet 5 is opened by the foot damper, and the conditioned air to the differential blower outlet 3 and the face blower outlet 4 side is shut off so that the temperature-controlled air is blown from the foot blower outlet 5. put out.

(4) In the differential / foot mode, the face outlet 4 is closed by the differential / face damper, and the foot damper is set to an intermediate opening, so that the temperature is controlled from both the differential outlet 3 and the foot outlet 5. Blow out.
(5) In the bi-level mode, the differential outlet face 3 is closed with the differential / face damper, and the foot damper is set to an intermediate opening, so that the temperature-controlled air is supplied from both the face outlet 4 and the foot outlet 5. Blow out.
These five blowing modes can be selected by switching between two dampers.

  The HVAC unit 1 having such a configuration is conventionally known. In the above embodiment, the diff / face damper opens and closes the differential outlet 3 and the face outlet 4, and the foot damper opens and closes the foot outlet 5. However, the differential / foot damper opens the differential outlet 3 and the foot. Needless to say, the air outlet 5 may be opened and closed, and the face air outlet 4 may be opened and closed with a face damper, or each of the air outlets 3 to 5 may be provided with three dampers individually.

  The two differential / face dampers and foot dampers are configured to be rotated via a link device 6 that is rotatably installed on the outer surface of the unit case 2. The link device 6 includes a link plate 8 provided with a fitting boss portion 7 that is fitted and supported rotatably around a shaft portion provided in the unit case 2 at the center. In the present embodiment, an example will be described in which the link plate 8 has a manual specification configuration in which a manual operation lever (not shown) is rotated through a wire connected to the operation lever. .

  As shown in FIG. 3, the link plate 8 has a sector shape and is provided with a fitting boss portion 7 at the center thereof and a plurality of reinforcing ribs in the radial direction and the circumferential direction, such as PBT, POM, etc. It is an integrally molded product made of a resin material, and has a configuration in which a first cam groove 9 and a second cam groove 10 are provided on both the back surface and the front surface along the arcuate outer peripheral edge. The link plate 8 is provided with a lever portion 11 that protrudes on the opposite side of the first cam groove 9 and the second cam groove 10 with the fitting boss portion 7 interposed therebetween. By connecting the other end of the wire connected to the lever, the link plate 8 is rotated by the operation of the manual operation lever.

  The first cam groove 9 and the second cam groove 10 have a groove shape so that the two differential / face dampers and the foot damper can be opened and closed at a predetermined timing by the rotation of the link plate 8. The first cam groove 9 and the second cam groove 10 have a first lever 14 and a second lever 15 connected to levers 12 and 13 fixed to shaft ends of the rotation shafts of the differential / face damper and the foot damper. The 1st pin 16 and the 2nd pin 17 which are provided in the one end part are each inserted from the back side and the surface side of the link plate 8 (refer FIG. 11).

  Further, as shown in FIGS. 3 to 10, the first cam groove 9 and the second cam groove 10 are bottomed grooves in which only one surface side into which the first pin 16 and the second pin 17 are fitted is opened. One end portions of the first cam groove 9 provided on the back surface side of the link plate 8 and the second cam groove 10 provided on the front surface side are shown in FIG. It is set as the structure mutually overlapped in the range OL from -B cross-section position to FF cross-section position (henceforth this part is called the overlap part OL).

  Further, the thickness direction dimension T of the arc-shaped outer peripheral edge portion of the link plate 8 provided with the first cam groove 9 and the second cam groove 10 is the depth direction dimension T including the bottom of one of the grooves. The thickness is the same. The overlap portion OL of the first cam groove 9 and the second cam groove 10 is penetrated by the common portion CO leaving a part of the bottom portions 9A and 10A of the respective cam grooves 9 and 10, and the bottom portions 9A and 10A. The opposing second pin 17 and first pin 16 can be guided to the corresponding second cam groove 10 and first cam groove 9 by the edge portions 9B and 10B.

With the configuration described above, according to the present embodiment, the following operational effects can be obtained.
In the HVAC unit 1, by operating a manual operation lever (not shown), the link plate 8 of the link device 6 is rotated around the fitting boss portion 7 via the wire and the lever portion 11. When the link plate 8 is rotated, the first pin 16 and the second pin 17 fitted in the first cam groove 9 and the second cam groove 10 are predetermined according to the shapes of the respective cam grooves 9 and 10. The first lever 14 and the second lever 15 are rotationally displaced around their support shafts by being moved in the radial direction.

  As a result, the levers 12 and 13 fixed to the rotation shafts of the differential / face damper as the first damper and the foot damper as the second damper are rotated, and the differential / face damper and the foot damper are rotated at predetermined timings. As a result, the temperature-controlled air adjusted to the set temperature via the evaporator, the heater core, and the air mix damper is used for the differential air outlet 3 and the face air outlet 4 corresponding to the five air outlet modes selected by the manual operation lever. The air can be selectively blown out from either the foot outlet 5 or the foot outlet 5 to adjust the temperature of the passenger compartment.

  In the link device 6 that rotates the differential / face damper that is the first damper and the foot damper that is the second damper, respectively, there are conflicting problems of downsizing the link plate 8 and reducing the operating force, In order to reduce the size of the link plate 8, it is necessary to reduce the radial dimension and the circumferential dimension. However, if the radial dimension is reduced, the cam grooves 9, 10 and the first and second grooves 9, 10 are fitted. While the pressure angle between the first pin 16 and the second pin 17 is increased and the operating force is increased, both reduction in size of the link plate 8 and reduction in the operating force are required.

  In the present embodiment, the first cam groove 9 and the second cam groove 10 provided along the arc-shaped outer peripheral edge portion of the link plate 8 are connected to one end portions of the cam grooves 9 and 10 on both the front and back surfaces of the link plate 8. The first pin 16 and the second pin 17 can be fitted from the front surface side and the back surface side of the link plate 8, respectively, and the first cam groove 9 and the second cam groove 10 are provided so as to overlap each other in a predetermined range OL. The overlap portion OL passes through the common portion CO except for a part of the bottom portions 9A and 10A of the cam grooves 9 and 10, and the second pin 17 and the second pin 17 of the other party are formed by the edges 9B and 10B of the bottom portions 9A and 10A. One pin 16 can be guided to the corresponding second cam groove 10 and first cam groove 9.

  For this reason, by arranging the two first cam grooves 9 and the second cam grooves 10 at the outermost peripheral positions of the front and back surfaces of the link plate 8, the radial positions of the cam grooves 9, 10 are maximized. The operating force can be reduced by reducing the pressure angle between the pins 9 and 10 and the pins 16 and 17 fitted in the grooves 9 and 10 as much as possible. Moreover, the circumferential direction dimension can be made small by the part of the overlap part OL by making the end parts of the two grooves 9 and 10 overlap each other within a predetermined range OL.

  Furthermore, one end portions of the first and second cam grooves 9 and 10 provided on the front and back of the link plate 8 are overlapped with each other, but a part of the bottom portions 9A and 10A of the respective cam grooves 9 and 10 is left. Since the second pin 17 and the first pin 16 of the mating side are guided to the cam grooves 10 and 9 by the edge portions 9B and 10B of the bottom portions 9A and 10A, the respective pin 16 , 17 are prevented from entering the opposite cam groove 10, 9 in the overlap portion OL of the cam groove 9, 10, so that each of the cam grooves 9, 10 is partially overlapped. The pins 16 and 17 can be reliably guided along the respective cam grooves 9 and 10.

  Accordingly, it can be expected that the link device 6 is made compact and compact, and the associated cost reduction, weight reduction, improvement in mountability, and improvement in freedom in layout are achieved, and the operation force of the link device 6 is reduced and the operation is reduced. Can improve sex. In particular, in the present embodiment, the lever portion 11 for connecting the manual operation wire is provided on the opposite side of the first cam groove 9 and the second cam groove 10 with the fitting boss portion 7 at the center, and the link plate 8. Because the manual operation wire is connected to the lever part 11, the link plate 8 can be miniaturized in both the radial direction and the circumferential direction, and it is ideal for manual operation that can reduce its operating force. Therefore, the present invention can be applied to the link device 6 for manual operation, and the operability and operation feeling can be improved satisfactorily.

  Further, the thickness T of the outer peripheral edge where the first cam groove 9 and the second cam groove 10 of the link plate 8 are provided is equivalent to the depth direction dimension including the bottom portions 9A and 10A of the one groove 9 and 10. Therefore, the thickness T of the outer peripheral edge of the link plate 8 provided with the first cam groove 9 and the second cam groove 10 on the front and back sides, and the link plate provided with two cam grooves on one side. And the same thickness. Accordingly, the link plate 9 provided with the cam grooves 9 and 10 on the front and back sides minimizes not only the radial and circumferential dimensions but also the thickness T, thereby reducing the cost and weight of the link plate 9 and the link device 6. Can be achieved.

  Furthermore, according to the vehicle air conditioner of the present embodiment, the first damper (difference / face damper) and the second damper (disposed in the first air flow path and the second air flow path in the unit case 2) The foot damper) is rotatable via the above-described link device 6 installed on the outer side surface thereof, and rotates the link plate 8 of the link device 6 so that the first cam groove 9 and the second cam groove 10 thereof. By rotating and displacing the first lever 14 and the second lever 15 via the first pin 16 and the second pin 17 inserted into the first pin 16 and the second pin 17, the first air flow path and the second air flow path in the unit case 2 are provided. The disposed first damper (diff / face damper) and second damper (foot damper) can be opened and closed at an appropriate timing to switch the mode of blowing the temperature-controlled air into the vehicle interior.

  For this reason, the operating force of the link device 6 can be reduced and the operability can be improved satisfactorily, and the link device 6 installed on the outer surface of the unit case 2 can be reduced in size and size to reduce the unit case 2. It is possible to improve the degree of freedom in layout of various unit components arranged on the outer surface of the vehicle and to improve the mounting property on the vehicle.

  Further, the differential / face damper as the first damper disposed in the first air flow path and the foot damper as the second damper disposed in the second air flow path are connected to the link plate 8 of the link device 6. By rotating and opening and closing at an appropriate timing determined by the shapes of the first cam groove 9 and the second cam groove 10, the temperature-controlled air blowing mode is changed to the differential mode, face mode, foot mode, differential / foot mode, Switchable to level mode, etc., and the temperature of the passenger compartment can be adjusted to improve the operability of differential / face dampers and foot dampers that switch the blowing mode, reducing the operating force and operating the dampers. Downsizing and downsizing of the link device 6 to reduce the cost, reduce the weight, improve the mountability, and improve the flexibility in layout It can be.

  Further, one end of a wire connected to the manual operation lever is connected to the lever portion 11 provided on the link plate 8, and the differential / face damper of the first damper and the foot damper of the second damper are opened and closed via the manual operation lever. It is possible to rotate the lever part 11 and the link plate 8 via the wire by operating the manual operation lever, so that the differential / face damper and foot damper can be opened and closed. In the vehicle air conditioner, the operation force can be reduced, and the operability and the operation feeling can be improved satisfactorily.

  In addition, this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the above-described embodiment, an example in which the link plate 8 is applied to a manually-operated vehicle air conditioner that rotates manually is described. However, the present invention is not limited to this, and the link plate 8 rotates via an actuator. Needless to say, the present invention can also be applied to the auto specification.

  In the above embodiment, the first and second levers 14 and 15 having the first and second pins 16 and 17 fitted into the first cam groove 9 and the second cam groove 10 of the link plate 8 are the differential / face dampers. In addition, the example applied to the link device 6 and the HVAC unit 1 connected to the levers 12 and 13 fixed to the rotation shaft of the foot damper has been described. However, one or both of the intermediate first and second levers 14 and 15 are used. The invention can be similarly applied to a configuration in which the pins provided on the levers 12 and 13 are omitted and directly inserted into the cam grooves 9 and 10.

1 Air conditioning unit (HVAC unit)
2 Unit case 3 Differential outlet 4 Face outlet 5 Foot outlet 6 Link device 7 Fitting boss (center)
8 Link plate 9 First cam groove 9A Bottom portion 9B Bottom edge portion 10 Second cam groove 10A Bottom portion 10B Bottom edge portion 11 Lever portion 12, 13 Lever 14 First lever 15 Second lever 16 First pin 17 Second pin OL Overlap part CO Common part T Thickness of outer peripheral edge of link plate

Claims (6)

A link plate in which a first cam groove and a second cam groove are provided along an arcuate outer peripheral edge, and a center part is rotatably supported around an axis;
A first lever and a second lever having a first pin and a second pin slidably fitted in the first cam groove and the second cam groove,
In the link device that rotates and displaces the first lever and the second lever via the first pin and the second pin by rotating the link plate, respectively,
The first cam groove and the second cam groove are provided on the front surface and the back surface of the link plate such that one end portions of the cam groove overlap each other, and the first pin and the second pin are respectively provided on the link plate. It is possible to insert from the front side and back side,
The overlap portion of the first cam groove and the second cam groove is through leaving a part of the bottom of the respective cam grooves, the bottom edge by Ri before Symbol second pin and the first pin, link apparatus characterized by for the corresponding said second cam groove and the first cam groove is configured to guide.   The thickness of the outer peripheral edge portion in which the first cam groove and the second cam groove of the link plate are provided is equal to the thickness in the depth direction including the bottom of one groove. Item 2. The link device according to Item 1.   2. The link plate is provided with a lever portion for connecting a manual operation wire on the opposite side of the first cam groove and the second cam groove with the center portion interposed therebetween. The link device according to 2. The link device according to any one of claims 1 to 3, wherein the link plate is rotatably supported on an outer surface of the unit case.
A rotatable first damper that is disposed in a first air flow path provided in the unit case and opens and closes the first air flow path;
A second damper that is disposed in a second air flow path provided in the unit case and that can freely open and close the second air flow path.
The vehicle air conditioner characterized in that the first damper is rotatable via the first lever and the second damper is rotatable via the second lever.   The first damper is a differential / face damper disposed in the first air flow path, and the second damper is a foot damper disposed in the second air flow path. The vehicle air conditioner according to claim 4. Relais bar portion provided on the link plate, one end of a wire that is connected to the manual operating lever is connected, said first damper and the second damper is opened and closed by operating the manual operation lever 6. The vehicle air conditioner according to claim 4 or 5, characterized in that:

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