WO2016111337A1

WO2016111337A1 - Coaxial structure door device and method for producing coaxial structure door device

Info

Publication number: WO2016111337A1
Application number: PCT/JP2016/050387
Authority: WO
Inventors: 貴昭榎本
Original assignee: 株式会社デンソー
Priority date: 2015-01-09
Filing date: 2016-01-07
Publication date: 2016-07-14
Also published as: JP2018030377A

Abstract

This coaxial structure door device includes a first rotary door (1), a second rotary door (2), and a first-rotary-door driving member (4). The first rotary door rotates about a shaft center (S). The second rotary door rotates coaxially with the first rotary door. The first-rotary-door driving member is connected to the first rotary door and transmits rotary torque for rotation about the shaft center to the first rotary door. The second rotary door has a ring-shaped rotary shaft (23a) surrounding a through hole which includes the shaft center. The first-rotary-door driving member is formed separately from the first rotary door and is attached to the first rotary door, being inserted into the through hole of the rotary shaft.

Description

Coaxial structure door device and method of manufacturing coaxial structure door device

Cross-reference to related applications

This application is based on Japanese Patent Application No. 2015-3415 filed on January 9, 2015, the contents of which are incorporated herein by reference.

The present disclosure relates to a coaxial structure door device and a method for manufacturing the coaxial structure door device.

Conventionally, in a vehicle air conditioner, a coaxial structure door device is known in which two rotary doors, a mode switching door and an air mix door, are coaxially arranged. In such a coaxial structure door device, Patent Document 1 describes a technique for preventing the air mix door from being deformed when the rotary shaft of the mode switching door is assembled into the rotary shaft of the air mix door. In Patent Document 1, a slit is provided in the rotation shaft of the air mix door, and the rotation shaft of the mode switching door is arranged in the rotation shaft of the air mix door through this slit.

JP 2011-207307 A

However, as a result of detailed studies by the inventors, it has been found that the above-described coaxial structure door device has a so-called key groove structure in which the rotation shaft of the mode switching door passes through a slit (that is, a groove) at a certain angle. . Specifically, when the key and the groove are at an angle that coincides with the driving of the mode switching door or the air mix door, a force is applied in the direction in which the rotation shaft of the mode switching door comes out of the rotation shaft of the air mix door. There is a risk of causing malfunction of the coaxial structure door device. For this reason, a restriction | limiting generate | occur | produces in the drive range of a mode switching door or an air mix door.

The same thing can occur not only in the coaxial structure composed of the mode switching door and the air mix door, but also in the coaxial structure of two other types of rotary doors.

This disclosure is intended to realize a structure in which two rotary doors having a coaxial structure are not restricted by a door operation region.

According to one aspect, the coaxial structure door device is connected to the first rotary door that rotates about an axis, the second rotary door that rotates coaxially with the first rotary door, and the first rotary door. And a first rotary door driving member that transmits a rotational torque for rotating about the axis to the first rotary door, and the second rotary door includes a through hole including the axis. The first rotary door drive member is formed separately from the first rotary door and is inserted into the through hole of the rotary shaft. It is assembled to.

According to another aspect, the first rotary door (1) that rotates about the axis (S), the second rotary door (2) that rotates coaxially with the first rotary door, and the first A first rotary door drive member (4) connected to the rotary door and transmitting a rotational torque for rotating about the axis to the first rotary door; and the second rotary door includes: An annular first rotating shaft (23a) surrounding a through hole including an axis is provided, and the first rotary door driving member is formed separately from the first rotary door, and the first rotating shaft The second rotary door is assembled to the first rotary door in a state of being inserted into the through hole, and the second rotary door has a coaxial second rotation shaft (23b) surrounding the hole including the shaft center. A manufacturing method of the structural door device includes the first rotary. A. Preparing the second rotary door and the first rotary door driving member; and after the preparing step, the first rotary door is connected to the first rotary shaft of the second rotary door and the second rotary door. After the step of arranging between the rotating shafts and the step of arranging, the first rotary door driving member is inserted into the first rotating shaft to connect the first rotary door driving member and the first rotary door. And a step of performing.

Thus, in the coaxial structure door device of the present disclosure, the first rotary door driving member is formed separately from the first rotary door and is inserted through the through hole of the first rotary shaft of the second rotary door. Is assembled to the mode switching door 1. Therefore, since it is not necessary to provide a slit in the first rotating shaft as in the prior art, it is possible to realize a structure that is not restricted by the door operation area.

It is an end view which shows schematic structure of the air conditioning unit which concerns on 1st Embodiment. It is a perspective view of a coaxial structure door device. It is a component expanded view of a coaxial structure door apparatus. It is a side view of the mode switching door drive member before an assembly. FIG. It is a figure which shows 1 process of an assembly of a coaxial structure door apparatus. It is a figure which shows 1 process of an assembly of a coaxial structure door apparatus. It is a figure which shows 1 process of an assembly of a coaxial structure door apparatus. It is a figure which shows 1 process of an assembly of a coaxial structure door apparatus. It is a figure which shows 1 process of an assembly of a coaxial structure door apparatus. It is a figure which shows 1 process of an assembly of a coaxial structure door apparatus. It is a figure which shows 1 process of an assembly of a coaxial structure door apparatus. It is a component expanded view of the coaxial structure door apparatus which concerns on 2nd Embodiment. It is a side view of the mode switching door drive member before an assembly. It is a XV arrow line view of FIG. It is a figure which shows the mode switching door drive member which concerns on 3rd Embodiment.

Hereinafter, embodiments will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals in the drawings in order to simplify the description.

(First embodiment)
Hereinafter, a first embodiment of the present disclosure will be described. The vehicle air conditioner according to this embodiment includes an air conditioning unit 10 shown in FIG. FIG. 1 is an end view showing a schematic configuration of the air conditioning unit 10. In FIG. 1, each of the arrows indicated as “up”, “down”, “front”, and “rear” indicates the direction in which the vehicle air conditioner is mounted on the vehicle. The arrow shown above indicates the Tenchi region improvement side, the arrow indicated below indicates the top and bottom direction, the arrow indicated as front indicates the front side in the vehicle traveling direction, and the arrow indicated as rear indicates the vehicle The rear side in the direction of travel is shown.

The air conditioning unit 10 includes a case 11, a cooling heat exchanger 12, a heating heat exchanger 13, an air mix door 2, and a rotary type mode switching door 1. The mode switching door 1 corresponds to an example of a first rotary door.
An air inlet 11a is provided in the front side of the case 11 in the vehicle traveling direction. The air inlet 11a is opened on one side in the vehicle width direction. Air blown from a blower (not shown) is introduced into the air introduction port 11a. The blower is arranged on one side (specifically, on the passenger seat side) in the vehicle width direction with respect to the air conditioning unit 10.

The cooling heat exchanger 12 is disposed in the case 11 on the rear side of the air introduction port 11a in the vehicle traveling direction. The cooling heat exchanger 12 constitutes a well-known refrigeration cycle apparatus that circulates refrigerant together with a compressor, a condenser, and an expansion valve, and cools the air introduced into the air inlet port 11a by evaporating the refrigerant. .

The heating heat exchanger 13 is disposed in the case 11 on the rear side in the vehicle traveling direction with respect to the cooling heat exchanger 12, and cool air blown out from the cooling heat exchanger 12 is used as engine cooling water (that is, hot water). ). In the case 11, on the rear side in the vehicle traveling direction with respect to the heating heat exchanger 13, a hot air passage 16 that guides the hot air blown from the heating heat exchanger 13 to the inlet opening 30 a side of the mode switching door 1. Is formed.

In the case 11, a bypass cold air passage 17 is provided between the cooling heat exchanger 12 and the heating heat exchanger 13. The bypass cold air passage 17 is a passage that guides the cold air from the cooling heat exchanger 12 to the inlet opening 30 b side of the mode switching door 1 by bypassing the heating heat exchanger 13. The

inlet openings

30a and 30b are located on the Tenchi district improvement side with respect to the heat exchanger 13 for heating.

The air mix door 2 is a rotary door disposed in the vicinity of the

inlet openings

30a and 30b on the heaven region improvement side of the heat exchanger 13 for heating. The air mix door 2 corresponds to a second rotary door. The air mix door 2 is supported with respect to the trunk portion 42 of the mode switching door driving member so as to be rotatable about an axis S of a shaft 40 of the mode switching door driving member 4 described later. The air mix door 2 is formed so that the cross section thereof has an arc shape centered on the axis S of the shaft 40. In FIG. 1, the shaft 40 is shown as seen through from the inside of the mode switching door 1. The direction of the axis S coincides with the vehicle width direction (that is, the direction perpendicular to the paper surface in FIG. 1).

The air mix door 2 changes the ratio of the opening area of the bypass cold air passage 17 and the opening area of the hot air passage 16 depending on the position. Thereby, the air mix door 2 changes the ratio (hereinafter referred to as the air mix ratio) between the opening area of the inlet opening 30a and the opening area of the inlet opening 30b. Thus, by adjusting the ratio between the amount of air flowing through the bypass cool air passage 17 as indicated by arrow a and the amount of air flowing through the hot air passage 16 as indicated by arrow b, the temperature of the air blown into the vehicle interior is adjusted. Can do.

FIG. 1 shows a max cool state in which the air mix door 2 fully closes the hot air passage 16 and fully opens the bypass cold air passage 17. A state is also feasible. Other states include a max hot state in which the hot air passage 16 is fully opened, and a state intermediate between the max cool state and the max hot state.

The mode switching door 1 is a rotary door that changes the blowing mode, and is arranged in the heaven region improvement side with respect to the heat exchanger 13 for heating in the case 11. The mode switching door 1 is supported by the shaft 40 so as to be rotatable with respect to the case 11.

In addition, as will be described later, the mode switching door 1 and the air mix door 2 are driven individually and independently to rotate.

The case 11 has a case peripheral wall 50 on the radially outer side with respect to the mode switching door 1. The case peripheral wall 50 is formed in a circular arc shape with the shaft 40 as the center. The case peripheral wall 50 has a defroster outlet 51b, a face outlet 51c, and a foot outlet 51d. Hereinafter, the defroster blowout opening 51b, the face blowout opening 51c, and the foot blowout opening 51d are collectively referred to as

blowout openings

51b, 51c, and 51d. The

blowout openings

51b, 51c, 51d are arranged in the circumferential direction with the axis S of the shaft 40 as the center. Hereinafter, the circumferential direction around the axis S of the shaft 40 is simply referred to as the circumferential direction.

In the present embodiment, the

blowout openings

51b, 51c, 51d are disposed on the heaven region improvement side with respect to the mode switching door 1. The face blowout opening 51c is disposed on one side in the circumferential direction with respect to the defroster blowout opening 51b. The foot blowing opening 51d is arranged on one side in the circumferential direction with respect to the face blowing opening 51c.

The face blowout opening 51c is a blowout opening that blows conditioned air toward the upper half of the occupant in the vehicle interior, and the foot blowout opening 51d is a blowout opening that blows conditioned air toward the lower half of the occupant, The defroster blowout opening 51b is a blowout opening that blows air conditioning toward the inner surface of the window glass in the passenger compartment.

In addition,

inlet opening portions

30a and 30b are formed in the case peripheral wall portion 50. The

inlet openings

30a and 30b are disposed on the lower side in the vertical direction with respect to the mode switching door 1. The inlet opening 30 a communicates with the warm air passage 16 and allows the warm air from the warm air passage 16 to flow into the mode switching door 1. The inlet opening 30 b communicates with the bypass cold air passage 17 and allows the cold air from the bypass cold air passage 17 to flow into the mode switching door 1. The mode switching door 1 causes the cool air and the warm air flowing into the inside from the

inlet openings

30a and 30b to flow out to any one of the

outlet openings

51b, 51c and 51d.

Next, the coaxial structure of the mode switching door 1 and the air mix door 2 of the present embodiment will be described with reference to FIGS. The mode switching door 1 and the air mix door 2 constitute a coaxial structure door device. The coaxial structure door device is also called an air conditioning passage adjusting device. In addition to the mode switching door 1 and the air mix door 2, the coaxial structure door device includes an air mix door driving member 3 and a mode switching door driving member 4. The mode switching door 1, the air mixing door 2, the air mixing door driving member 3, and the mode switching door driving member 4 are members formed separately from each other, that is, as separate members separated from each other.

As shown in FIGS. 1 to 3, the mode switching door 1 includes a first door side wall 60a, a second door side wall 60b (see FIGS. 2 and 3), and outer

peripheral walls

61, 62, and 63 (see FIGS. 2 and 3). It is a resin-made rotary door provided with

door openings

64, 65, 66 (see FIG. 1).

The first door side wall 60a and the second door side wall 60b are each formed in a disc shape, and are formed on both side end portions of the mode switching door 1 (the first rotary shaft 23a side end portion and the second end portion of the air mix door 2 described later). The rotation shaft 23b side end portion) is arranged with a space therebetween.

The outer

peripheral walls

61, 62, and 63 shown in FIGS. 1 to 3 are each formed in a plate shape extending between the

door side walls

60a and 60b in the direction of the axis S and the circumferential direction centering on the shaft 40. . That is, the outer

peripheral walls

61, 62, 63 are formed in a circular arc shape with the shaft 40 as the center.

These outer

peripheral walls

61, 62, 63 are arranged at intervals in the circumferential direction around the axis S of the shaft 40. The outer peripheral wall 62 is disposed on one side in the circumferential direction with respect to the outer peripheral wall 61. The outer peripheral wall 63 is disposed on the one side in the circumferential direction with respect to the outer peripheral wall 62. In the present embodiment, the outer peripheral wall 62 is provided with an air guide 62e for guiding the air flow.

The door opening 64 is disposed between the outer

peripheral walls

61 and 62 on the one side in the circumferential direction with respect to the outer peripheral wall 61. The door opening 65 is disposed between the outer

peripheral walls

62 and 63 on the one side in the circumferential direction with respect to the outer peripheral wall 62. The door opening 66 is disposed between the outer

peripheral walls

63 and 61 on the one side in the circumferential direction with respect to the outer peripheral wall 63.

In this embodiment, a door inner space 67 surrounded by the case peripheral wall portion 50, the

door side walls

60a and 60b, and the outer

peripheral walls

61, 62, and 63 is formed inside the mode switching door 1 in the case 11. In the mode switching door 1, a plurality of air guides 62f, 62g, 62h, 62i are arranged in the axial direction S of the shaft 40 at intervals.

Further, a shaft connecting portion 68 is formed so as to surround a portion intersecting with the axis S at the center of the first door side wall 60a. The shaft connection portion 68 is a cylindrical annular member that surrounds a through-hole that communicates one side and the other side of the first door side wall 60a. Further, the through hole includes the axis S. Further, the inner wall of the shaft connecting portion 68 does not have an axial object shape (that is, a cylindrical shape) having the axis S as the symmetry axis. The shaft 40 of the mode switching door drive member 4 is press-fitted into the through hole. The shaft connecting portion 68 is not formed with a slit that makes the shaft connecting portion 68 non-circular.

Further, a rotation shaft 69 (see FIGS. 6 to 12) is formed so as to surround a portion intersecting with the axis S at the center of the second door side wall 60b. The rotating shaft 69 is a cylindrical annular member extending from the second door side wall 60b to the anti-mode switching door 1 side (that is, the second rotating shaft 23b side), and the end of the mode switching door 1 on the second rotating shaft 23b side. Located in the department. The rotating shaft 69 corresponds to the third rotating shaft. The central axis of the cylindrical shape is the axis S. The diameter of the outer peripheral wall of the rotating shaft 69 changes stepwise so that the diameter of the second rotating shaft 23b side is smaller than that of the first rotating shaft 23a side. Specifically, out of the outer peripheral wall, the diameter of the small-diameter portion 69b (see FIG. 6) on the second rotating shaft 23b side is larger than the diameter of the large-diameter portion 69a (see FIG. 6) on the first rotating shaft 23a side. The one is smaller. The diameter of the large diameter portion 69a is larger than the opening diameter of the end portion of the second rotating shaft 23b on the first rotating shaft 23a side, and the diameter of the small diameter portion 69b is smaller than the opening diameter.

When the mode switching door 1 rotates around the axis S, the positions of the outer

peripheral walls

61, 62, and 63 change. The opening degree of the

blowout openings

51b, 51c, 51d is changed by the change in the position of the outer

peripheral walls

61, 62, 63. The degree of opening includes fully open, fully closed, and an arbitrary opening degree between the fully open state and the fully closed state. Thereby, the blower outlet mode mentioned later changes.

The air mix door 2 is a resin rotary door including an outer peripheral wall 21, a first side wall 22a, a second side wall 22b, a first rotating shaft 23a, and a second rotating shaft 23b. The outer peripheral wall 21 is curved in a cross-sectional arc shape along the circumferential direction around the axis S. The

side walls

22a and 22b have a sector shape, and are connected to the end portion of the outer peripheral wall 21 in the axial center S direction. The

rotating shafts

23a and 23b are provided on the

side walls

22a and 22b, respectively.

The first rotating shaft 23a is a cylindrical annular member surrounding the through hole, and the body portion 42 of the mode switching door driving member 4 is inserted into the through hole by loose fitting. The mode switching door driving member 4 is inserted into the through hole. The cylindrical central axis is an axis S, and the axis S is included in the through hole. The first rotating shaft 23a is press-fitted into the first hole 31 formed in the air mix door driving member 3. In addition, the 1st rotating shaft 23a is not formed with the slit which makes the 1st rotating shaft 23a non-circular. The first rotating shaft 23 a is supported by a bearing (not shown) formed in the case 11.

The second rotating shaft 23b is a cylindrical annular member surrounding the through hole, and the rotating shaft 69 of the mode switching door 1 is inserted into the through hole by loose fitting. The cylindrical central axis is an axis S, and the axis S is included in the through hole. The second rotating shaft 23 b is supported by a bearing (not shown) formed in the case 11.

The position of the outer peripheral wall 21 changes as the air mix door 2 rotates about the axis S. By changing the position of the outer peripheral wall 21, the ratio of the opening area of the inlet opening 30a and the inlet opening 30b changes.

The mode switching door 1 is all disposed between the first rotating shaft 23a and the second rotating shaft 23b of the air mix door 2 except for the rotating shaft 69. In addition, the rotation shaft 69 has a part or all of the above-mentioned small diameter portion 69b inserted into the second rotation shaft 23b, and the entire large diameter portion 69a is interposed between the first rotation shaft 23a and the second rotation shaft 23b. Be placed.

The air mix door driving member 3 is a resin member in which the first hole 31 and the second hole 32 are formed. As described above, the air mixing door driving member 3 is fixed to the air mixing door 2 by press-fitting the first rotating shaft 23 a of the air mixing door 2 into the first hole 31.

In the second hole 32, a protrusion formed on a plate-shaped first link (not shown) is inserted by loose fitting. This 1st link is connected with the operation member for air mix ratio operation by the wire. When a vehicle occupant operates the operating member, the operating force is transmitted to the first link via the wire, and as a result, the first link is displaced (for example, rotated, moved, etc.). Then, the projection of the first link is also displaced, and as a result, the second hole 32 is also moved. As a result, the air mix door driving member 3 rotates about the axis S.

Thus, the force applied to the operation member for air mix ratio operation, that is, the power for driving the air mix door 2 is transmitted to the air mix door drive member 3 through the wire and the first link. As a result, rotational torque is transmitted from the air mix door drive member 3 to the first rotary shaft 23a of the air mix door 2, and the air mix door 2 rotates about the axis S, realizing the air mix ratio intended by the occupant. To do.

As shown in FIGS. 3 to 5, the mode switching door drive member 4 includes a shaft 40, four

stoppers

41a, 41b, 41c, 41d, a body portion 42, two

claw portions

43a, 43b, An arm 44 and a pin 45 are provided. All of these members are integrally formed.

The shaft 40 is a member at the most distal end side (specifically, the mode switching door 1 side) among the

members

40, 41a, 41b, 41c, 41d, 42, 43a, 43b, 44, 45, and has a shaft center. It is a rod-shaped member extending in the direction of S. A cross section of the shaft 40 cut along a plane perpendicular to the axis S includes the axis S, but is not circular with the axis S as the center. That is, the shaft 40 includes the axis S, but is not an axial object shape with the axis S as the axis of symmetry. Furthermore, the shape of the cross section obtained by cutting the shaft 40 along a plane perpendicular to the axis S is substantially the same as the shape of the cross section obtained by cutting the inner wall of the shaft connection portion 68 along a plane perpendicular to the axis S. Accordingly, the shaft 40 is fitted into the shaft connection portion 68.

Further, most of the shaft 40 is press-fitted into the shaft connection portion 68 of the mode switching door 1 at the tip side. By this press-fitting, the mode switching door drive member 4 and the mode switching door 1 are connected and assembled. At this time, as described above, the outer shape of the shaft 40 and the inner wall shape of the shaft connecting portion 68 are substantially the same, and both are not objects of the axis centered on the axis S. Both rotate together.

The four

stoppers

41a, 41b, 41c, 41d are provided at discrete and constant intervals in the circumferential direction around the axis S on the side of the shaft 40 on the base side (the anti-mode switching door 1 side). Has been placed. Each of the

stoppers

41a, 41b, 41c, and 41d is a thin plate-like member extending in the radial direction with respect to the axis S. The end surfaces 41at, 41bt, 41ct, 41dt on the distal end side of the

stoppers

41a, 41b, 41c, 41d are in contact with the protruding end portion 68t on the first rotating shaft 23a side of the shaft connecting portion 68 (FIG. 8, FIG. 12). Thereby, it is prevented that the shaft 40 is further inserted into the through hole beyond a specified amount.

As described above, the mode switching door 1 and the mode switching door driving member 4 rotate integrally. However, when play (that is, loosening) occurs in the coupling between the shaft connecting portion 68 and the shaft 40 due to deterioration over time, the mode switching door 1 and the mode switching door drive member 4 rotate. The mode switching door drive member 4 slightly slides with respect to the switching door 1. Even in such a case, the

stoppers

41 a, 41 b, 41 c, and 41 d that are spaced apart from each other protrude rather than being in contact with the mode switching door driving member 4 on the entire circumference of the protruding end portion 68 t of the shaft connecting portion 68. It is in contact with the end 68t. Therefore, sliding resistance between the mode switching door 1 and the mode switching door drive member 4 can be suppressed.

The barrel 42 is a substantially cylindrical member that is connected to the shaft 40 and the ends of the bases of the

stoppers

41a, 41b, 41c, and 41d and extends in the direction of the axis S. The body portion 42 is formed thicker than the shaft 40.

Further, the above-described two

claw portions

43a and 43b are formed at the end portion of the body portion 42 (specifically, the mode switching door 1 side). These

claw portions

43 a and 43 b are elastic members that are easily elastically deformed as compared with other portions of the mode switching door drive member 4. As will be described later, the

claw portions

43a and 43b are separated from the first rotation shaft 23a toward the anti-mode switching door 1 side (root side) after the body portion 42 is inserted into the first rotation shaft 23a. It catches on the 1st rotating shaft 23a so that there may not be.

The arm 44 is a plate-shaped member that is connected to the base side end of the body portion 42 and has a longitudinal direction in a direction perpendicular to the axis S. One end of the arm 44 in the longitudinal direction is connected to the base side end of the body portion 42, and a pin 45 is connected to the other end.

The pin 45 is a rod-like member extending from the other end of the arm 44 in parallel to the axis S. The pin 45 is inserted into a groove formed in a plate-shaped second link (not shown) by loose fitting. This 2nd link is connected with the operation member for blower outlet mode operation by the wire. When a vehicle occupant operates the operation member, the operation force is transmitted to the second link through the wire, and as a result, the second link is displaced (for example, rotated, moved, etc.). Then, the groove of the second link is also displaced, and as a result, the pin 45 is also moved. As a result, the arm 44 rotates about the axis S.

Thus, the force applied to the operation member for operating the air outlet mode, that is, the power for driving the mode switching door 1 is transmitted to the mode switching door driving member 4 through the wire and the second link. As a result, the rotational torque is transmitted from the shaft 40 of the mode switching door drive member 4 to the shaft connecting portion 68 of the mode switching door 1 so that the mode switching door 1 rotates about the axis S, and the air outlet mode intended by the occupant Is realized. As the outlet mode, there are known foot mode, defroster mode, face mode and the like, and the degree of opening of the

outlet openings

51b, 51c, 51d in these outlet modes is well known.

Next, the assembly process of the coaxial structure door device which is a part of the manufacturing process of the coaxial structure door device will be described with reference to FIGS. This step may be performed manually by one or more workers or automatically by a manufacturing apparatus. 8 to 12 show cross sections obtained by cutting portions A and B indicated by broken lines in FIG. 7 along a plane including the axis S and parallel to the paper surface of FIG.

First, an operator or a manufacturing apparatus prepares a mode switching door 1, an air mix door 2, an air mix door driving member 3, and a mode switching door driving member 4. Then, the worker or the manufacturing apparatus fixes the air mix door driving member 3 to the air mix door 2. Specifically, the operator or the manufacturing apparatus press-fits the first rotating shaft 23 a of the air mix door 2 into the first hole 31 of the air mix door driving member 3.

Next, the worker or the manufacturing apparatus arranges the entire mode switching door 1 between the first rotating shaft 23a and the second rotating shaft 23b of the air mix door 2, as shown in FIG. The total length of the mode switching door 1 in the axis S direction is the length along the axis S from the end on the first rotating shaft 23a side of the shaft connecting portion 68 to the end on the second rotating shaft 23b side of the rotating shaft 69. W2. The total length W2 is smaller than the length W1 along the axis S from the end of the first rotating shaft 23a on the second rotating shaft 23b side to the end of the second rotating shaft 23b on the first rotating shaft 23a side. .

Therefore, the mode switching door 1 and the air mix door 2 can be assembled without changing the direction by tilting the mode switching door 1 or the air mix door 2 while maintaining the orientation when the assembly is completed. Further, the mode switching door 1 can be inserted without forcibly deforming the air mix door 2.

After that, as shown in FIG. 7, the shaft connection portion 68, the rotation shaft 69, the first rotation shaft 23 a, and the second rotation shaft 23 b are disposed so as to surround the same axis S by the above assembly. In this state, the worker or the manufacturing apparatus next sets the mode switching door drive member 4 to the shaft 40, the shaft 40 as the tip, the shaft 40, the

stoppers

41 a, 41 b, 41 c, 41 d, and the body part 42 along the axis S. Inserted into one rotation shaft 23a.

When the mode switching door drive member 4 continues to be inserted, as shown in FIG. 8, the tip of the shaft 40 slightly enters the hole of the shaft connecting portion 68 and the side surface near the tip of the shaft 40 protrudes to the protruding end 68t. And the inner wall of the shaft connecting portion 68. Further, the

claw portions

43a and 43b inserted into the first rotating shaft 23a are elastically deformed in a direction approaching the axis S and are in contact with the inner wall of the first rotating shaft 23a.

When the mode switching door driving member 4 continues to be inserted, the mode switching door 1 is also urged by the shaft 40 with the inner peripheral edge of the protruding end portion 68t and the inner wall of the shaft connecting portion 68 being urged. At the same time, it moves along the axis S in the direction of the second rotating shaft 23b.

Further, when the mode switching door driving member 4 continues to be inserted, the mode switching door driving member 4 and the mode switching door 1 continue to move. As shown in FIG. 9, the entire small-diameter portion 69b of the rotating shaft 69 is inserted into the hole of the second rotating shaft 23b by loose fitting, and a stepped portion 69c at the boundary between the large-diameter portion 69a and the small-diameter portion 69b ( 8) abuts against the end of the second rotating shaft 23b on the first rotating shaft 23a side. Due to this contact, the mode switching door 1 is urged from the second rotating shaft 23b, so that the mode switching door 1 cannot be pushed further.

If the operator or the manufacturing apparatus continues to insert the mode switching door driving member 4, the mode switching door 1 cannot move, and the shaft 40 of the mode switching door driving member 4 is pressed into the hole of the shaft connecting portion 68. At the same time, as shown in FIG. 10, the

claw portions

43a and 43b come out of the first rotating shaft 23a and are displaced in a direction away from the axis S by the elastic restoring force.

The worker or the manufacturing apparatus further continues to insert the mode switching door drive member 4. Then, as shown in FIG. 11, end surfaces 41at, 41bt, 41ct, 41dt on the front end side of the

stoppers

41a, 41b, 41c, 41d are protruding ends of the shaft connecting portion 68 of the shaft connecting portion 68 on the first rotating shaft 23a side. It contacts the part 68t. At this time, the press-fitting of the shaft 40 is completed.

When the insertion of the mode switching door driving member 4 is completed, the step 69c of the rotating shaft 69 is slightly separated from the second rotating shaft 23b due to the reaction, as shown in FIG. However, the movement of the mode switching door 1 in the direction of the first rotating shaft 23a is restricted by the

hook portions

43a and 43b being hooked on the shaft connecting portion 68. Therefore, even when the mode switching door 1 is urged in the direction of the first rotating shaft 23a for some reason, the rotating shaft 69 does not come off from the second rotating shaft 23b, and the shaft 40 is connected to the shaft connecting portion 68. It will not come out of the through hole. The assembly and manufacture of the coaxial structure door device is completed through the above steps.

Also, the coaxial structure door device assembled in this way is assembled to the air conditioning case, thereby completing the manufacture of the coaxial structure door device.

After the coaxial structure door device is completed in this way, the coaxial structure door device is assembled to the above-described bearing of the case 11 to manufacture the air conditioning unit 10 of the vehicle air conditioner.

As described above, in the coaxial structure door device of the present embodiment, the mode switching door drive member 4 is formed separately from the mode switching door 1 and is inserted into the through hole of the first rotating shaft 23a. It is assembled to the switching door 1.

Thus, in the coaxial structure door device of the present disclosure, the first rotary door driving member is formed separately from the first rotary door and is inserted through the through hole of the first rotary shaft of the second rotary door. Is assembled to the mode switching door 1. Therefore, since it is not necessary to provide a slit in the first rotating shaft as in the prior art (the technology of Patent Document 1 and International Publication No. 2014/092077), it is possible to realize a structure that is not restricted by the door operation area.

Also, in International Publication No. 2014/092075, when the mode switching door and the air mix door are assembled, the mode switching door is disposed between the rotating shafts at both ends of the air mix door in a state where the mode switching door is offset in the axial direction. After that, the mode switching door is slid and the rotation shaft of the mode switching door is assembled to the rotation shafts at both ends of the air mix door. Therefore, the movement control of the mode switching door is complicated, and the door is relatively difficult to assemble. Further, since the coaxial structure door device cannot maintain the assembled state, it is difficult to handle the coaxial structure door device when assembling the assembled coaxial structure door device to the case. Further, the power transmission drive members of the air mix door and the mode switching door cannot be arranged on the same side of the coaxial structure door device.

On the other hand, the coaxial structure door device according to the present embodiment does not require sliding as described above when the mode switching door 1 is disposed on the

rotation shafts

23a and 23b of the air mix door 2. Attachment is relatively easy.

Further, in the coaxial structure door device of the present embodiment, once the coaxial structure door device is assembled, the catches of the

claw portions

43a and 43b prevent the rotation shaft 69 and the shaft 40 from being detached. It has a structure that can be held.

Further, in the coaxial structure door device of the present embodiment, the mode switching door drive member 4 is inserted into the first rotating shaft 23a of the air mix door 2 and connected to the mode switching door 1. Therefore, by fixing the air mix door driving member 3 to the first rotating shaft 23a, the power transmission driving member of each door can be arranged on the same side (right side in FIG. 3) of the coaxial structure door device.

In addition, the mode switching door 1, the air mixing door 2, the air mixing door driving member 3, and the mode switching door driving member 4 of the present embodiment are not conventionally the same in shape and assembling structure, but exist as conventional parts. To do. Therefore, in this embodiment, the above advantageous effects can be achieved without using the existing parts and increasing the number of parts.

(Second Embodiment)
Next, a second embodiment of the present disclosure will be described with reference to FIGS. The vehicle air conditioner of the present embodiment is obtained by replacing the mode switching door drive member 4 of the coaxial structure door device in the first embodiment with a mode switching door drive member 4z.

The mode switching door drive member 4z of this embodiment is obtained by replacing the arm 44 and the pin 45 with the motor shaft 46 of the mode switching door drive member 4 of the first embodiment. The motor shaft 46 is inserted into a recess formed in the output shaft of an electric motor (not shown). The axis of the output shaft of the electric motor coincides with the axis S. This recess extends in the direction of the axis S. Therefore, the rotational torque of the electric motor is transmitted from the output shaft to the motor shaft 46, and this rotational torque is transmitted from the mode switching door drive member 4 to the mode switching door 1. As a result, the mode switching door 1 rotates about the axis S. Note that the motor shaft 46 is not an axis subject having the axis S as the axis of symmetry, and the above-described recess has a shape corresponding to the motor shaft 46. Therefore, the output shaft does not slide relative to the motor shaft 46 when the output shaft of the electric motor rotates.

(Third embodiment)
Next, a third embodiment of the present disclosure will be described with reference to FIG. The vehicle air conditioner of this embodiment is obtained by replacing the mode switching door drive member 4z of the coaxial structure door device in the second embodiment with a mode switching door drive member 4zz.

The mode switching door drive member 4zz of this embodiment is obtained by replacing the motor shaft 46 of the mode switching door drive member 4z of the second embodiment with a casing 47 and an electric motor 48. The mode switching door drive member 4zz of this embodiment is integrated with the casing 47 and the electric motor 48. The casing 47 is a member that protects the electric motor 48, and the output shaft of the electric motor 48 is integrated with the body portion 42. The axis of the output shaft of the electric motor 48 coincides with the axis S.

(Other embodiments)
Note that the present disclosure is not limited to the above-described embodiment, and can be modified as appropriate. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the component, etc., the shape, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like. The present disclosure also allows the following modifications to the above embodiments. In addition, the following modifications can select application and non-application to the said embodiment each independently. In other words, any combination of the following modifications can be applied to the above-described embodiment.

(Modification 1)
In the said embodiment, the mode switching door 1 is illustrated as an example of a 1st rotary door, and the air mix door 2 is illustrated as an example of a 2nd rotary door. However, the first rotary door and the second rotary door are not necessarily limited to this.

(Modification 2)
The air mix door 2 and the air mix door drive member 3 may be integrally formed.

(Modification 3)
In the said embodiment, the shaft connection part 68 of the mode switching door 1 becomes a shape surrounding a hole, and it has the structure where the shaft 40 which is a rotating shaft of the mode switching door drive member 4 is press-fitted in the said hole. However, the connection structure between the shaft connecting portion 68 and the shaft 40 is not limited to this.

For example, the shaft connecting portion 68 may protrude from the first door side wall 60a, the shaft 40 may have a cylindrical shape surrounding the hole, and the protruding shaft connecting portion 68 may be press-fitted into the hole. . Or the shaft connection part 68 and the shaft 40 may be adhere | attached or welded.

(Modification 4)
In the above embodiment, the air mix door drive member 3 transmits the rotational torque based on the force of the vehicle occupant to the air mix door 2, but the rotational torque of the electric motor (not shown) is transmitted to the air mix door 2. You may come to communicate.

(Modification 5)
In the said embodiment, although the air mix door drive member 3 is couple | bonded with the 1st rotating shaft 23a, it does not necessarily need to be like this. For example, the air mix door driving member 3 may be coupled to the second rotating shaft 23b instead of the first rotating shaft 23a. In this case, the air mixing door driving member 3 is fixed to the air mixing door 2 by press-fitting the second rotating shaft 23 b into the first hole 31 of the air mixing door driving member 3.

Claims

A coaxial structure door device,
A first rotary door (1) that rotates about an axis (S);
A second rotary door (2) rotating coaxially with the first rotary door;
A first rotary door drive member (4) connected to the first rotary door and transmitting a rotational torque for rotating about the axis to the first rotary door;
The second rotary door has an annular rotation shaft (23a) surrounding a through hole including the axis.
The first rotary door drive member is a coaxial structure door device that is formed separately from the first rotary door and is assembled to the first rotary door in a state of being inserted into the through hole of the rotating shaft.
The rotation axis is a first rotation axis (23a);
The coaxial structure door device according to claim 1, wherein the second rotary door has an annular second rotating shaft (23b) surrounding a hole including the shaft center.
At least a portion of the first rotary door is disposed between the first rotating shaft and the second rotating shaft;
The total length (W2) of the first rotary door in the axial direction is the axis from the second rotating shaft side end of the first rotating shaft to the first rotating shaft side end of the second rotating shaft. The coaxial structure door device according to claim 2, which is smaller than a length (W1) along the center.
The second rotary door has the first rotation shaft on one end side in the direction of the axis and the second rotation shaft on the other end side in the direction of the axis,
The first rotary door has a third rotating shaft (69) at an end on the second rotating shaft side,
The third rotating shaft is loosely fitted in the hole of the second rotating shaft;
The first rotary door drive member has claw portions (43a, 43b) located between the first rotation shaft and the second rotation shaft,
The claw portion is hooked on the first rotation shaft so that the third rotation shaft does not come off from the second rotation shaft when the first rotary door is biased in the direction of the first rotation shaft. Item 4. The coaxial structure door device according to Item 2 or 3.
The first rotary door has a third rotating shaft (69) at an end on the second rotating shaft side,
The outer peripheral wall of the third rotating shaft includes a large-diameter portion (69a), a small-diameter portion (69b) closer to the second rotating shaft than the large-diameter portion, and a step at the boundary between the large-diameter portion and the small-diameter portion. Part (69c),
The diameter of the large diameter portion is larger than the opening diameter of the end portion on the first rotating shaft side of the second rotating shaft,
The diameter of the small diameter portion is smaller than the opening diameter of the end portion on the first rotating shaft side of the second rotating shaft,
The coaxial structure door device according to any one of claims 2 to 4, wherein the small-diameter portion is loosely fitted in the hole of the second rotating shaft.
The first rotary door is a mode switching door that changes the degree of opening of a plurality of outlet openings (51c, 51d, 51d) that blow out conditioned air toward the vehicle interior of the vehicle,
The coaxial structure door device according to any one of claims 1 to 5, wherein the second rotary door is an air mix door that adjusts an air temperature blown into the vehicle interior.
A second rotary door drive member (3) connected to the second rotary door and transmitting a rotational torque for rotating about the axis to the second rotary door;
The coaxial structure door device according to any one of claims 1 to 6, wherein the second rotary door driving member is fixed to the rotating shaft.
The first rotary door has a shaft connection (68) surrounding a hole containing the axis;
The first rotary door driving member comes into contact with a shaft (40) press-fitted into the hole of the shaft connection portion and an end portion (68t) of the shaft connection portion on the rotating shaft side, whereby the shaft is A plurality of stoppers (41a, 41b, 41c, 41d) for preventing further insertion into the hole;
The coaxial structure door device according to any one of claims 1 to 7, wherein the plurality of stoppers are arranged at intervals in a circumferential direction centering on the axis.
The first rotary door has a shaft connection (68) surrounding a hole containing the axis;
The first rotary door driving member has a shaft (40) press-fitted into the hole of the shaft connecting portion,
The coaxial structure door device according to claim 4, wherein the claw portion is between the first rotating shaft and the shaft connecting portion.
A first rotary door (1) that rotates about an axis (S); a second rotary door (2) that rotates coaxially with the first rotary door; and the first rotary door connected to the shaft. A first rotary door drive member (4) for transmitting a rotational torque for rotating about the center to the first rotary door, and the second rotary door has a through hole including the shaft center. A state having an annular first rotating shaft (23a), the first rotary door driving member being formed separately from the first rotary door, and being inserted through the through hole of the first rotating shaft The second rotary door is a method of manufacturing a coaxial structure door device having an annular second rotating shaft (23b) surrounding a hole including the shaft center. ,
Providing the first rotary door, the second rotary door, and the first rotary door drive member;
After the preparing, placing the first rotary door between the first rotary shaft and the second rotary shaft of the second rotary door;
A manufacturing method comprising: inserting the first rotary door driving member into the first rotating shaft and connecting the first rotary door driving member and the first rotary door after the arranging.