JP2001113937A - Sliding door device of air conditioning unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the rattling of a sliding door. SOLUTION: In a sliding door device 9 of an air conditioning unit, a slide plate 21 is disposed between side plates 23 of a frame 20, and a slide pin 29 installed projectedly on both sides of a slide plate is fitted slidably into a guide groove 23B so as to form a slide guide guiding the sliding operation of the slide plate. Also, a pinion gear 31 is meshed with a rack gear 30 formed in the slide plate and the pinion gear 31 is rotated so as to slide the slide plate along the guide groove. Then, a pressing force is given from the pinion gear meshed with the rack gear to the slide plate so as to press the slide pin forcibly against one surface of both inner surfaces of the guide groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide door device suitable for use as, for example, an air mix door of an air conditioning unit for a vehicle.

[0002]

2. Description of the Related Art Various types of doors are incorporated in an air conditioning unit for a vehicle to adjust the amount of air flow and to switch the air flow path. Conventional doors are mainly of the rotary type, which rotates around a certain axis.However, in order to meet the demand for more compact air conditioning units, those that have adopted sliding doors have recently been provided. Is coming. The sliding door does not require a wide opening / closing space around the door, so that the unit can be made compact. On the other hand, a device for smoothly performing the sliding operation is required.

FIG. 8 shows a conventional example in which a sliding door is adopted as an air mix door. This air conditioning unit is disclosed in Japanese Patent Application Laid-Open No. H11-254942.
A cooling heat exchanger 103 for cooling the blower is provided.
A heating heat exchanger 104 for heating the air passing through the cooling heat exchanger 103 is provided in the air passage 102 downstream of the cooling heat exchanger 103, and the cooling heat exchanger 103. There is provided a bypass passage 105 through which the blast passing through the heating heat exchanger 104 flows.
A slide-type air mix that distributes the air passing through the bypass passage 105 and the air passing through the heating heat exchanger 104 at an appropriate ratio between the cooling heat exchanger 103 and the heating heat exchanger 104. A door 106 is provided.

The sliding type air mix door 106
Is formed in an arc shape swelling toward the downstream side of the cool air that has passed through the cooling heat exchanger 103, and slide pins 107 provided at the front and rear ends of the left and right ends are attached to the unit case 10.
By engaging with a pair of front and rear arc-shaped guide grooves (guide rails) 108 provided on both left and right side walls of the vehicle 1, the slide operation is guided by the slide pins 107 and the guide grooves 108. I have. A rack gear 109 is provided on the lower surface of both right and left edges of the air mix door 106.
A pinion gear 111 provided on a drive shaft 110 that is supported on the left and right side walls of the unit case 101 is meshed with a rack gear 109 and is slid by the rotation of the drive shaft 110.

[0005]

In this type of slide door device, the slide pin 107 and the guide groove 10 are not provided.
8, a clearance must be ensured to allow the movement of the slide pin 107. However, because of the clearance, the slide pin 107 floats in the guide groove 108, and the door 106 is opened. There is a problem of rattling. Particularly in a vehicle air conditioner, there is a strong demand for minimizing backlash since the influence of vibration is great.

The present invention has been made in consideration of the above circumstances, and has as its object to provide a slide door device of an air conditioning unit that can eliminate rattling of a slide door.

[0007]

According to the first aspect of the present invention, a pair of side plates are provided at both ends in the width direction of the frame, and a slide plate that moves in a direction orthogonal to the width direction of the frame is disposed between the two side plates. A guide for guiding the sliding operation of the slide plate is configured by slidably fitting slide pins projecting from both sides of the slide plate into guide grooves formed on both side plates of the frame, and further, In a slide door device of an air conditioner unit in which a pinion gear meshes with a rack gear formed on a slide plate and rotates the pinion gear to slide the slide plate along a guide groove, the pinion gear meshes with the rack gear. To give a pressing force to the
The slide pin is forcibly pressed against one of both inner side surfaces of the guide groove.

In the present invention, since the slide pins are forcibly pressed against one of the inner surfaces of the guide grooves, the slide pins do not float in the guide grooves, and the slide plate (slide door) is rattled. Can be suppressed. In this case, the pressing force is directly applied to the slide plate by the pinion gear meshing with the rack gear, so that, for example, a pressing roller or the like is separately provided to apply the pressing force to the slide plate.
It can be realized with a simple structure. Even when the slide pin is located at the end of the guide groove, the above-described pressing force can be generated by the engagement of the pinion gear and the rack gear. Can be planned.

According to a second aspect of the present invention, there is provided the sliding door device of the air conditioner unit according to the first aspect, wherein the pinion gear has a radial elasticity in a range from an outer periphery to an inner periphery of the pinion gear. A void is formed.

When the pressing force is applied to the slide plate by the pinion gear as in the first aspect of the present invention, the pressing force is applied in a state where the pinion gear is assembled to the rack gear, and when the rigidity of the pinion gear is high, There is a possibility that an excessive pressing force may be applied to the slide plate.

In this respect, according to the second aspect of the present invention, since the elasticity of the pinion gear in the radial direction is enhanced by forming a cavity in the pinion gear itself, a pressing force is applied to the slide plate with the elasticity of the pinion gear. It is possible,
The slide pin can be pressed against the inner surface of the guide groove with an appropriate force.

For the purpose of merely increasing the radial elastic force of the pinion gear, the material of the pinion itself may be a soft material. However, the shape stability may be reduced and the performance as a gear may be impaired. Comes out. Therefore, a space is provided in the range from the outer periphery to the inner periphery to enhance the elastic force. In this case, a high elastic force in the radial direction can be applied to the pinion gear while molding the pinion gear with a hard resin in order to guarantee the performance as a gear.

According to a third aspect of the present invention, in the slide door device of the air conditioner unit according to the first aspect, the slide pin insertion groove for inserting the slide pin into the guide groove is provided as viewed from the guide groove. It is formed on the side plate opposite to the direction in which the pressing force is applied, and communicates with the guide groove.

As described above, the slide pin is pressed against one of both inner surfaces of the guide groove. According to the invention of claim 3, the slide pin is inserted into the inner surface opposite to the inner surface against which the slide pin is pressed. Since the communication opening of the groove is formed, when the slide pin slides along the guide groove, there is no possibility that the slide pin is caught in the communication opening of the slide pin insertion groove, and the communication is always stable. The slide pin can be slid.

According to a fourth aspect of the present invention, in the slide door device of the air conditioner unit according to the first aspect, the slide pins are arranged so as to protrude toward the slide pin insertion groove at both ends in the slide direction of the slide plate. And the slide pin insertion groove is provided at two locations corresponding to the slide pins at both ends, and the distance between the two slide pin insertion grooves is set smaller than the distance between the slide pins at both ends. Features.

According to the fourth aspect of the present invention, since the distance between the slide pin insertion grooves is smaller than the distance between the slide pins, two slide pins can be simultaneously inserted from the slide pin insertion grooves into the guide grooves. Can not. Therefore, when inserting the slide pin into the guide groove, one slide pin is inserted into the guide groove from the one slide pin insertion groove, and then the slide pin is moved in the guide groove, and the remaining slide pin is removed. Align the two slide pin insertion grooves. Then, by inserting the remaining slide pin in the guide groove from the slide pin insertion groove, the assembly of the slide plate is completed. As described above, since the slide pins need to be separately inserted at the time of assembly, conversely, both slide pins do not come out of the slide pin guide grooves at the same time, and the slide plate is less likely to come off.

According to a fifth aspect of the present invention, there is provided the slide door device of the air conditioner unit according to any one of the first to fourth aspects, wherein the slide plate is formed in an arc plate shape, and the guide groove is slid. The plate is formed in an arc shape for guiding the plate along an arc locus, and the rack gear and the pinion gear are arranged on a side of the arc where the center of curvature is located.

According to the present invention, since the slide plate has an arc plate shape and the rack gear and the pinion gear are located on the side of the arc having the center of curvature, all the elements can be incorporated in the arcuate space, and the compactness can be achieved. Can be planned.

According to a sixth aspect of the present invention, there is provided the slide door device of the air conditioner unit according to any one of the first to fifth aspects, wherein the slide door device is used as an air mix door of the air conditioner unit.

According to the present invention, since the slide door device is used as an air mixing door in a place where the opening and closing space is hardly ensured around, it is particularly effective in reducing the size of the air conditioning unit. Also, it is preferable to secure a wide space for mixing cool air and hot air downstream of the air mix door in order to improve the air conditioning performance.However, this can be realized while reducing the size of the unit. Become.

[0021]

According to the first aspect of the present invention, since the slide pins are forcibly pressed against one of the inner surfaces of the guide grooves, the slide pins do not float in the guide grooves. Thereby, the backlash of the slide plate (slide door) can be reliably suppressed. In addition, since the pressing force is directly applied to the slide plate by the pinion gear, the structure is simple and easy to realize.

According to the second aspect of the present invention, since the elasticity in the radial direction of the pinion gear is enhanced by forming a cavity in the pinion gear itself, the slide pin can be formed with an appropriate force by the elasticity. It can be pressed against the inner surface, so that it is not pressed with excessive force. Therefore,
A stable sliding operation of the slide plate can be guaranteed while preventing rattling.

According to the third aspect of the present invention, since the slide pin insertion groove is provided so as to communicate with the guide groove, the slide plate can be easily assembled. Moreover, there is a communication opening for the slide pin insertion groove on the inner surface of the guide groove on the side opposite to the side on which the slide pin is pressed, that is, conversely, on the opposite side to the side where the communication opening for the slide pin insertion groove is provided. Since the slide pin is pressed against the inner surface of the guide groove, there is no danger of the slide pin being caught in the communication opening when sliding along the guide groove, and the slide pin is always stably moved along the guide groove. Can be slid. Therefore,
The smooth operation of the slide plate can be guaranteed while facilitating the assembly of the slide plate.

According to the invention of claim 4, the distance between the slide pin insertion grooves provided at two locations corresponding to the slide pins at both ends is larger than the distance between the slide pins provided at both ends in the sliding direction of the slide plate. , The two slide pins cannot be inserted into the guide groove at the same time, but on the contrary, both slide pins do not come out of the guide groove at the same time, and the slide plate is less likely to come off.

According to the fifth aspect of the present invention, when the slide plate is formed in the shape of an arc plate, the rack gear and the pinion gear are arranged on the side where the center of curvature of the arc is located. The sliding door device can be incorporated, and the size of the sliding door device can be reduced.

According to the sixth aspect of the present invention, since the slide door device is used as an air mixing door in the place where the opening and closing space is least secured in the air conditioning unit, the entire unit can be made compact. It can greatly contribute in planning.

[0027]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an air conditioner for a vehicle having a sliding door device according to the present invention as an air mixing door.

In FIG. 1, reference numeral 1 denotes an air conditioning unit for a vehicle, and reference numeral 2 denotes a unit case.

The unit case 2 has a shape that can be separated left and right by a fastening screw or the like. FIG. 2 is a perspective view showing a half part where the unit case 2 is separated into right and left. Inside the unit case 2, a blower (blower) 3 as a main component, an air conditioning passage 6 for guiding air sent from the blower 3 toward upper opening ports 4, 5 described below, A cooling heat exchanger 7 and a heating heat exchanger 8 arranged in the air conditioning passage 6, and a cooling heat exchanger 7 arranged downstream of the cooling heat exchanger 7.
, A sliding door device 9 provided as an air mixing door through which air passing without exception passes, an opening / closing door 10 disposed downstream of the cooling heat exchanger 7 and the heating heat exchanger 8, and an air conditioning passage. 6 and an opening / closing door 11 arranged at the last part.

The blower 3 is arranged in an arc-shaped housing 12 provided above the unit case 2, and is driven to rotate by a drive motor (not shown).

The housing 12 has an inlet 13 for taking air into the housing 12 by rotation of the blower 3.
And an air outlet 15 that finally blows out toward the passenger compartment 14.

The air-conditioning passage 6 communicates with the air outlet 15 of the housing 12 to supply air blown out from the air outlet 15 to the vehicle compartment 1.
A descending passage 6A that guides down along the side 4 and a U that guides the descended air toward the engine room 16 to make a U-turn.
A turn passage 6B and an ascending passage 6C for guiding the air U-turned in the U-turn passage 6B toward the upper opening ports 4, 5.
It consists of

The descending passage 6A of the air conditioning passage 6 is formed so as to be surrounded by the case wall 2A on the vehicle compartment side of the unit case 2 and the left and right side walls 17, 17 of the unit case 2. The U-turn passage 6B is formed by being surrounded by the case bottom wall surface 2B of the unit case 2 and the left and right side walls 17, 17. The ascending passage 6C is formed so as to be surrounded by the case wall surface 2C of the unit case 2 on the engine room 16 side, the left and right side walls 17, 17 and the rear surface of the housing 12 formed in an arc shape.

The cooling heat exchanger 7 and the heating heat exchanger 8 are connected to the descending passage 6A of the air conditioning passage 6 and the U-turn passage 6B.
The cooling heat exchanger 7 is provided on the upstream side, and the heating heat exchanger 8 is provided on the downstream side.

The cooling heat exchanger 7 is composed of a refrigerant pipe through which the refrigerant flows and a number of fins (all are not shown). The cooling heat exchanger 7 is supported by upper and lower support brackets 18 provided in the unit case 2, and has an inclined posture inclined forward by a predetermined angle toward the engine room 16. .

The inclination angle of the cooling heat exchanger 7 is set within a range of about 0 to 30 degrees with respect to the vertical direction, and preferably, a forward inclination posture of about 20 degrees. With such an angle setting, the air from the air outlet 15 passes between the fins of the cooling heat exchanger 7 through the descending passage 2A, and an efficient flow is ensured. Is performed and cooled.

The cooling heat exchanger 7 communicates with a compressor, a condenser and an expansion valve (not shown) so that the refrigerant discharged from the compressor passes through the condenser and the expansion valve and becomes a cooling evaporator. A refrigeration cycle that returns from the heat exchanger 7 to the compressor again is configured.

As shown in FIG. 1, the heating heat exchanger 8
Lower end of air blowing area of cooling heat exchanger 7 and door 1
0, which is located below a straight line connecting the pivot shaft 10A to the front and rear support brackets 1 and is arranged to take a substantially horizontal posture.
9 and 19 are supported. More specifically, the heating heat exchanger 8 connects the upper end of the slide plate 21 constituting the slide door device 9 and the pivot shaft 10A of the opening / closing door 10 when the slide door device 9 described later is in the full cool mode. It is arranged to be below the straight line. The attitude angle of the heating heat exchanger 8 is about 10 from the substantially horizontal direction to the upstream side.
A rising angle is desirable. By taking such a posture, as shown in FIG. 1, the cooling heat exchanger 7 and the heating heat exchanger 8 have a substantially horizontal T-shaped layout structure, and the vertical dimension of the unit case 2 The shape is reduced.

The heating heat exchanger 8 is designed to flow heated water heated by an engine (not shown). When air passes through the heat exchanger body, heat is exchanged and heated. It has become so.

Next, the structure of the sliding door device 9 is shown in FIGS.
This will be described with reference to FIG.

The slide door device 9 includes a substantially rectangular frame 20 and a slide plate 21 slidably mounted in a direction h orthogonal to the width direction w of the frame 20.
(Corresponding to a slide door), a drive shaft 22, and a rotation drive unit (not shown) for rotating the drive shaft 22.

As shown in FIG. 3, the frame 20 includes a pair of frame side plates (side plates) 23, 23 formed by an arc and a chord having a shape obtained by cutting a circle with a chord. 23, 23 are arranged on both ends of the frame 20 in the width direction w so as to face each other. In the center of each frame side plate 23, a bearing opening 23A is opened. Further, a pair of slide guide grooves 23B, 23B having a substantially arc shape are formed on surfaces of the frame side plate portions 23, 23 facing each other along an arc edge.

The pair of slide guide grooves 23B, 23B formed in each of the frame side plate portions 23, 23 are formed along the arc-shaped edge as described above, and are separated at the center of the frame side plate portion 23. I have. As shown in FIG. 6, both ends of the slide guide grooves 23B, 23B separated at the center are bent so as to approach the arc-shaped edge side. Further, slide pin insertion grooves 23C, 23C which are parallel to each other across the bearing opening 23A and communicate with the slide guide grooves 23B, 23B are formed on the opposing surfaces of the frame side plate parts 23, 23. Have been. The slide pin insertion grooves 23C, 23C are formed from the chord side edges of the frame side plate portions 23, 23 to the slide guide grooves 23C.
B and 23B.

The distance between the frame side plates 23, 23 formed on the inner surface opposite the slide guide grooves 23B, 23B is set to be substantially the same as the width of the air passage area of the cooling heat exchanger 7. . These frame side plate portions 23, 2
3 are opposite to each other in the frame 2
4, 24 are connected. Along the arc-shaped edges of the frame side plate portions 23, guide plate portions 25, 25 are formed extending from the edges toward the inside facing each other with a predetermined width.

The central portions of the frame lateral frame portions 24 in the width direction w are connected to each other by a central guide plate portion 26 that is curved similarly to the guide plate portion 25. Further, the guide plate 2
The central portions of the guide plates 5, 25 and the central guide plate 26 in the vertical direction h (indicated by an arrow in FIG. 3) are connected by a reinforcing horizontal plate 27. As a result, the curved opening surface formed by being surrounded by the frame horizontal frame portions 24, 24 and the guide plate portions 25, 25 is divided into a cross shape by the central guide plate portion 26 and the reinforcing horizontal plate portion 27. Then, two upper openings 28A, 28A located on the upper side of the frame 20 and two lower openings 28B, 28B located on the lower side of the frame 20 are formed.

The slide plate 21 is connected to the frame 20 described above.
In the same manner as the degree of curvature of the curved opening surface, a rectangular face plate curved in an arc shape is disposed inside the curved opening surface of the frame 20.

Further, slide pins 29 projecting outwardly in the width direction w of the frame 20 are integrally formed at upper and lower ends (both ends in the slide direction of the slide plate 21) of both side edges in the width direction w of the slide plate 21. A total of four are formed. The slide pins 29 are slidably inserted from the slide pin insertion grooves 23C into the slide guide grooves 23B, respectively, and constitute a slide guide for guiding the slide operation of the slide plate 21.

In this case, as shown in FIG. 5, the distance H1 between the upper and lower slide pins 29, 29 is set smaller than the distance H2 between the slide pin insertion grooves 23C, 23C. Instead of being able to insert the slide pins 29, 29 into the slide pin insertion grooves 23C, 23C, both slide pins 29, 29 are prevented from coming out of the slide pin insertion grooves 23C, 23C at the same time.

A cylindrical collar 29A having a diameter smaller than the width of the slide guide grooves 23B, 23B is fitted around the outer periphery of each slide pin 29.
The sliding movement of the slide pin 29 in 3B is promoted.

In this case, if the material of the frame 20 having the slide guide groove 23B and the slide plate 21 having the slide pin 29 is polypropylene (PP),
The material of the collar 29A is a material different from the above, especially polyacetal (POM) which is slippery in the guide groove 23B.
And so on.

The collar 29A is provided with a slide pin 29.
May be formed in a cap shape so as to cover up to the end face.
In such a case, even when the end surface of the slide pin 29 contacts the bottom surface of the slide guide groove 23B, the slide pin 2
9 can be smoothed. The collar 29A may be rotatably fitted to the outer periphery of the slide pin 29 like a roller. In such a case, when the slide pin 29 moves along the slide guide groove 23B,
Since the slide resistance is reduced by the rotation of the collar 29A, the slide plate 21 can be moved smoothly.

The collar 29A may be formed by winding a tape or a sheet, instead of fitting the outer periphery of the slide pin 29 in a form previously formed into a cylindrical shape.

Further, rack teeth (rack gears) 30 are engraved on the curved inner surfaces of both side edges in the width direction w of the slide plate 21 along the side edges. The dimension of the slide plate 21 in the width direction w is equal to the pair of frame side plate portions 2 of the frame 20.
The distance is set to be approximately the same as the distance between 3 and 23. The dimension of the slide plate 21 in the up-down direction (direction orthogonal to the width direction w of the frame 20) h is set slightly longer than half of the guide plate portion 25 of the frame 20, and the slide plate 21 When attached, a pair of upper openings 28A, 28A and a pair of lower openings 28B, 2A
8B is set so that either one of them can be completely closed or opened.

The length of the drive shaft 22 is substantially the same as the length of the slide plate 21 in the width direction w. At both ends of the drive shaft 22, a pinion gear 3
Each of the rotary cylinders 32 formed with 1 is mounted. Outside the rotary cylinder 32, a cylinder shaft 32 </ b> A having a shorter diameter than the pinion gear 31 is provided to protrude coaxially with the pinion gear 31. The cylindrical shaft 32 </ b> A is formed at the center of the frame side plate 23 of the frame 20.
It is rotatably supported by 3A. A connecting groove 32B is formed on the end face of the cylindrical shaft 32A so as to be connected to a rotation driving means (not shown) to transmit the rotation driving force.

The rotary cylinder 32 provided with the pinion gear 31 is formed of a hard resin, but has poor elasticity as it is. Therefore, as shown in FIG. An annular space 31 </ b> A is formed to increase the radial elasticity of the pinion gear 31. Since the annular space 31A cannot be formed continuously over the entire circumference, the annular space 31A is formed concentrically on the inner circumference and the outer circumference in a discontinuous form, and the annular space 31A on the inner circumference and the outer circumference is formed in the circumferential direction. By wrapping in an appropriate size, the void 31A is present substantially over the entire circumference. Further, on the outer periphery of the pinion gear 31, there are provided stopper teeth 31B for generating a force for urging the slide plate 21 further toward the slide limit position when the slide plate 21 is at any of the slide limit positions. I have.

In order to assemble the slide door device 9 using such components, first, the right and left slide pins 29 on the upper end or lower end of the slide plate 21 are attached to the frame 20.
Into the respective slide guide grooves 23B through the upper or lower left and right slide pin insertion grooves 23C. Thereafter, the slide pin 29 placed in the slide guide groove 23B is appropriately moved in the slide guide groove 23B, and the remaining slide pin 2 is moved.
9 is aligned with another slide pin insertion groove 23C. Then, by inserting the remaining slide pin 29 from the slide pin insertion groove 23C into the slide guide groove 23B, the assembly of the slide plate 21 is completed. As described above, it is necessary to insert the slide pins 29 separately at the time of assembling, and conversely, both slide pins 29 do not come out of the slide pin guide grooves 23C at the same time.

Next, the drive shaft 22 is mounted in the bearing opening 23A of the frame side plate 23 together with the rotary cylinder 32 having the pinion gear 31, and the pinion gear 31 is engaged with the rack teeth 30 while being positioned. The slide door device 9 of FIG. 3 is configured.

In this assembled state, the pinion gear 31 applies a pressing force to the slide plate 21 via the rack teeth 30 while utilizing its own elasticity in the radial direction. One of the two inner surfaces of the slide guide groove 23B (the inner surface on the outer peripheral side of the arc-shaped slide guide groove 23B) is forcibly pressed.

Accordingly, the slide pin 29 does not float in the slide guide groove 23B, and the play of the slide plate 21 is reliably suppressed even when the slide plate 21 slides or stops. In this case, the pressing force is directly applied to the slide plate 21 by the pinion gear 31 meshing with the rack teeth 30. Therefore, for example, a simple structure is provided as compared with a case where a separate pressing roller or the like is provided and the pressing force is applied to the slide plate. realizable. In addition, since the pressing force is applied to the slide plate 21 by using the elasticity of the pinion gear 31 in the radial direction, the slide pin 29 can be pressed against the inner surface of the slide guide groove 23B with an appropriate force, and excessive pressing is performed. There is no possibility of slipping due to force.

Further, since the slide pin insertion groove 23C communicates with the inner surface of the slide guide groove 23B opposite to the side on which the slide pin 29 is pressed, the slide pin 29 slides along the slide guide groove 23B. At this time, there is no possibility that the slide pin 29 will be stably slid along the slide guide groove 23B without a risk of being caught in the communication opening of the slide pin insertion groove 23C, and the slide operation is stabilized.

When the slide plate 23B is at both ends (sliding limit position), stopper teeth 31B formed on the outer periphery of the pinion gear 31 press the slide plate 21 further in the end direction as shown in FIG. Thereby, the slide pin 29 is pressed against the bent end of the slide guide groove 23B. Therefore, no matter where the slide plate 21 is located, it is possible to prevent rattling.

As shown in FIGS. 1 and 2, the sliding door device 9 having the above-described configuration supports the support brackets 18, 1 in the unit case 2 for mounting the cooling heat exchanger 7.
8, door support brackets 33, 33 formed integrally with each other.
It is attached to. In the slide door device 9, the curved and protruding side faces the downstream side, and the upper opening 28
A and 28A are arranged and mounted such that the lower openings 28B and 28B are located below and the lower openings 28B and 28B are located below. With the slide door device 9 mounted in the unit case 2 in this manner, the rotary cylinder 32 mounted on the end of the drive shaft 22
The rotation transmission connecting portion (not shown) of the rotation driving means is connected to the connection concave groove 32B, and the rotation of the rotary cylinder 32 is enabled by controlling the rotation driving means.

The upper openings 4 and 5 are arranged in a concentrated manner on the case wall 2C on the engine room 16 side and the upper wall 2D continuing from the case wall 2C. Upper wall 2
The upper opening port 5 provided in D is a vent port, and the upper opening port 4 provided in the case wall 2C on the engine room 16 side is a defroster port. An opening / closing door 11 is provided between the upper opening ports 4 and 5 to switch and control the upper opening ports 4 and 5 alternately.

As shown in FIG. 1, a ventilator duct 34 is connected to the upper opening 5 serving as a vent.
A defroster duct 36 for blowing air toward the windshield 35 is provided in the upper opening 4 serving as a defroster port.
Is connected. Further, in FIG. 1, reference numeral 37 denotes a foot port for sending air to the foot, and reference numeral 38 denotes a drain reservoir. The opening and closing of the foot opening 37 is controlled by the opening and closing door 10. The drain reservoir 38 is partitioned by a partition plate 39, and has a structure that is not directly affected by air passing through the cooling heat exchanger 7. A drain port (not shown) is provided at the bottom of the drain reservoir 38.

In the vehicle air conditioning unit 1 configured as described above, the air blown from the blower 3 is cooled or heated in the process of passing through the cooling heat exchanger 7 and the heating heat exchanger 8, The mixture is mixed in the air mix chamber indicated by reference numeral 40 in FIG. The conditioned air is blown into the passenger compartment 14 by controlling the opening and closing of each of the opening and closing doors 10 and 11.

Next, the operation and operation of the sliding door device 9 and the opening and closing door 10 for each mode will be described.

First, when the vehicle air conditioning unit 1 is in the full cool mode, the slide plate 21 is completely lowered in the slide door device 9, and the lower opening 28 B formed in the frame 20 is completely closed by the slide plate 21. In a loose condition. In order to move the slide plate 21, the above-described rotation driving means is driven to transmit the rotation to the drive shaft 22, and the pinion gear 31 is rotated. Moves.

In this case, it is assumed that the opening / closing door 10 has the foot opening 37 closed. At this time, the air blown out from the blower 3 side goes down the downward passage 6A, passes through the cooling heat exchanger 7, and is cooled. Cooling heat exchanger 7
The air cooled in the above passes through the air mix chamber 40 and flows to the ascending passage 6C. As described above, since the heating heat exchanger 8 is located below the straight line connecting the upper end of the slide plate 21 and the pivot 10A of the opening / closing door 10, it passes through the upper opening 28A of the sliding door device 9. The lower end of the cold air that has flowed can smoothly flow toward the upward passage 6C without hitting an obstacle.

For this reason, the cool air downstream of the cooling heat exchanger 7 has a reduced ventilation resistance and can suppress the generation of noise. Furthermore, since there is no obstacle to the cool air that has passed through the cooling heat exchanger 7, it is possible to suppress the generation of the turbulent flow that is drawn into the heating heat exchanger 8 side. As a result,
Entrapment of hot air in the heating heat exchanger 8 can be suppressed, and an increase in blown-out temperature can be suppressed. If the opening and closing door 10 is controlled to open the foot opening 37 in this state, the cool air is taken in from the foot opening 37 and sent to the foot outlet. Also in this case, entrainment of hot air can be suppressed.

Further, when the opening / closing door 10 is half-opened with the slide plate 21 lowered, the cool air is blown to the upper opening ports 4 and 5 through the ascending passage 6C and also to the foot port 37 side. can do.

Next, the slide plate 2 of the slide door device 9
A case in which 1 is located at an intermediate position (the state shown in FIG. 1) and the opening / closing door 10 is in a state in which the foot opening 37 is closed will be described. In this case, the air sent from the blower 3 is cooled by passing through the cooling heat exchanger 7 to become cool air, and the cool air passes through the upper and lower sides of the slide plate 21, respectively. The cool air that has passed above the slide plate 21 (upper opening 28A) is blown into the air mix chamber 40 as it is. On the other hand, the cool air that has passed under the slide plate 21 (the lower opening 28B) passes through the heating heat exchanger 8 and becomes hot air, is blown out to the air mix chamber 40, and passes over the slide plate 21. Mixes with the cold air. In the present embodiment, the provision of the slide door device 9 as described above allows the volume of the air mix chamber 40 to be set to be large. Has the effect of reducing the passage resistance of the wire. In this state, the opening / closing door 10
Is closed by the air port 37, the air mixed properly in the air mix chamber 40 is
It is introduced inside and is blown to the foot outlet.

Here, the case of the bi-level mode in which the slide plate 21 of the slide door device 9 is located at the intermediate position and the opening / closing door 10 is located at the intermediate position will be described. In such a bi-level mode, the air sent from the blower 3 passes through the cooling heat exchanger 7 and the cool air passes through the upper and lower sides of the slide plate 21 respectively. The cold air that has passed under the slide plate 21 passes through the heating heat exchanger 8 and becomes hot air. At this time, the cool air that has passed through the upper opening 28A on the upper side of the slide plate 21 is sent out in a laminar state toward the ascending passage 6C. Most of the hot air that has passed through the heating heat exchanger 8 is introduced into the foot opening 37 by the rectifying action of the opening and closing door 10.

A part of the warm air is supplied to the guide plate 2 of the frame 20.
5, mixed with the cool air along the central guide plate portion 26. As described above, in the present embodiment, the cold air and the hot air are not completely separated from each other, but have an action of mixing a part of the hot air with the cold air. It is possible to prevent the difference between the temperature of the blown air and the air blown from the foot outlet from becoming too large. As a result,
An excessively large difference between the foot temperature and the ventilator temperature can be prevented. Therefore, it is possible to make the occupant feel the comfort of the indoor temperature in the bi-level mode.

Next, the slide plate 2 of the slide door device 9
A full hot state in which the upper half of the frame 20 is closed will be described. In this state, the air that has passed through the cooling heat exchanger 7 passes through the heating heat exchanger 8 and becomes hot air, and when the opening / closing door 10 closes the foot opening 37, the hot air flows to the ascending passage 6C side. It is designed to be sent out. When the opening / closing door 10 opens the foot opening 37, warm air is introduced into the foot opening 37.

Although the embodiments have been described above, the present invention allows various design changes accompanying the gist of the configuration. For example, although the case where the slide door device of the present invention is applied to an air mix door has been described, the slide door device can be applied to other doors.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a vehicle air conditioning unit using a slide door device of the present invention as an air mixing door.

FIG. 2 is a perspective view showing an internal structure of a unit case of the air conditioning unit for a vehicle.

FIG. 3 is an exploded perspective view of a slide door device in the vehicle air conditioning unit.

FIG. 4 is a perspective view showing an assembled state of the slide door device.

FIG. 5 is a side sectional view showing an assembled state of the slide door device.

FIG. 6 is a side sectional view of a frame in the slide door device.

FIG. 7 is a plan view of a pinion gear in the slide door device.

FIG. 8 is a side sectional view showing a conventional air conditioning unit.

[Explanation of symbols]

 Reference Signs List 9 slide door device 20 frame 21 slide plate 23 frame side plate (side plate) 23B slide guide groove 23C slide pin insertion groove 29 slide pin 30 rack teeth (rack gear) 31 pinion gear 31A void w frame width direction h frame width direction Orthogonal direction

Claims (6)

[Claims] A pair of side plates (23) are provided at both ends in the width direction of a frame (20), and a slide that moves between these two side plates (23) in a direction (h) orthogonal to the width direction (w) of the frame. A plate (21) is provided, and slide pins (2) projecting from both sides of the slide plate (21) are inserted into guide grooves (23B) formed in both sides of the frame (20).
9) is slidably fitted to the slide plate (21).
A slide guide that guides the slide operation of
Furthermore, a pinion gear (31) is meshed with a rack gear (30) formed on the slide plate (21), and the pinion gear (31) is rotated to thereby rotate the slide plate (21).
In the sliding door device (9) of the air conditioner unit, which slides along the guide groove (23B), the pinion gear (3) meshing with the rack gear (30) is provided.
According to 1), a pressing force is applied to the slide plate (21), whereby the slide pin (29) is forcibly pressed against one of both inner side surfaces of the guide groove (23B). Sliding door device of the air conditioning unit. 2. The sliding door device for an air-conditioning unit according to claim 1, wherein a radial elasticity of the pinion gear (31) is increased in a range from an outer periphery to an inner periphery of the pinion gear (31). A sliding door device for an air-conditioning unit, wherein a space (31A) is formed. 3. The slide door device for an air conditioner unit according to claim 1, wherein a slide pin insertion groove (23C) for inserting the slide pin (29) into the guide groove (23B) is a guide groove. A sliding door device for an air-conditioning unit, wherein the sliding door device is formed on a side plate (23) on the opposite side to the direction in which the pressing force is applied as viewed from (23B) and communicates with the guide groove (23B). 4. The slide door device for an air conditioner unit according to claim 1, wherein the slide pin (29) protrudes toward the slide pin insertion groove (23C) at both ends of the slide plate (21) in the slide direction. And the slide pin insertion grooves (23C) are provided at two locations corresponding to the slide pins (29) at both ends, and the two slide pins are provided according to the distance between the slide pins (29) at both ends. A slide door device for an air-conditioning unit, wherein a distance between pin insertion grooves (23C) is set small. 5. The slide door device for an air-conditioning unit according to claim 1, wherein the slide plate (21) is formed in an arc plate shape, and the guide groove (23B) is formed. The slide plate (21) is formed in an arc shape for guiding along an arc locus, and the rack gear (30) and the pinion gear (31) are arranged on the side of the arc where the center of curvature is located. Sliding door device of the air conditioning unit. 6. The sliding door of an air conditioning unit according to claim 1, wherein the sliding door is used as an air mixing door of the air conditioning unit. apparatus.