JPH11240321A - Air conditioning device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily assemble a door main body and a driving shaft of a sliding door into a case by arranging a means for temporarily holding the driving shaft at a specified position in the state that a gear and teeth are meshed with the door main body. SOLUTION: A driving shaft 24 is temporarily held at a specified position of a door main body 6a, for instance, by means of a temporarily holding means 25 in the state that a gear 23 is meshed with teeth 22. In assembling the door main body 6a and the driving shaft 24 onto a case, the driving shaft 24 is inserted into a through-hole 27 of a rib piece 26 composing the temporarily holding means 25 of the door main body 6a. The driving shaft is subjected to sub-assembly onto the door main body 6a in the state that the gear 23 is meshed with the teeth 22 of the door main body 6a. The meshing relation between the gear 23 and the teeth 22 is not influenced even when the door main body 6a and the driving shaft 24 are not manually held so as not to be dislocated in assembling. Assembling operability of the door main body 6a and the driving shaft 24 can thus be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner.

[0002]

2. Description of the Related Art Some air conditioners for automobiles are disclosed, for example, in Japanese Patent Application Laid-Open No. 9-123748.
There is a known type in which a control door (air mixing door) disposed between an evaporator and a heater core is a sliding type.

[0003] The sliding type air mix door is opened at a position where a ventilation port is opened by engagement of a guide pin protruding from a side end of a door body and a guide groove provided at a side wall of the case, and is closed. It is slidable between the closed position and a tooth portion is provided on one side surface of the door body, and a gear fixed to a drive shaft that is pivotally supported through the case side wall is meshed with the tooth portion, The door body is slid by the rotation of the drive shaft.

[0004]

The case is divided into left and right halves for assembling internal functional parts such as an evaporator, a heater core, and a control door. When assembling a slide-type air mix door as the control door and a drive shaft, the left and right ends of the drive shaft are inserted into the corresponding bearing holes of the right and left split type case. At the same time, the guide pins at the left and right end portions of the door body are engaged with the guide grooves provided on the case side wall of the split right and left case,
These right and left split cases are fitted and fixed.

It is necessary to assemble the control door and the drive shaft so that their teeth and gears are engaged with each other, so that the control door and the drive shaft are connected to each other until the split right and left case is properly fitted. Must be held so as not to be displaced from each other, but since the case has no access space, it is very difficult to assemble the control door and the drive shaft.

SUMMARY OF THE INVENTION The present invention provides an air conditioner for an automobile, in which a door body and a drive shaft of a sliding control door can be easily assembled in a case.

[0007]

According to the first aspect of the present invention, a control door disposed in a case and controlling ventilation in the case is provided on a side end of the door body and a side wall of the case. A gear comprising: slide guide means provided and engaged with each other; and gears fixedly mounted on a drive shaft that is supported by a toothed portion provided on the door body and a side wall of the case and supported by the toothed portion. And a sliding structure including a mechanism, wherein temporary holding means for temporarily holding the drive shaft at a fixed position in a state where the tooth portion and the gear are meshed with the door main body are provided.

According to the second aspect of the present invention, the temporary holding means according to the first aspect of the present invention is driven by forming a rib piece protruding from the door body and forming the rib piece along the movement locus of the door body. It is characterized by comprising a through-hole through which a shaft is slidably inserted.

According to a third aspect of the present invention, the temporary holding means according to the first aspect is configured as a hook portion projecting from the door body and engaging with the drive shaft.

[0010]

According to the first aspect of the present invention, the drive shaft can be temporarily held at a fixed position with respect to the door body by the temporary holding means in a state where the gear is meshed with the teeth of the door body. Therefore, even when the door body and the drive shaft are not held by hand when the door body and the drive shaft are assembled into the case, there is no relative displacement between the door body and the drive shaft. As a result, the assembling operation can be further improved while maintaining the tooth portion and the gear at the proper meshing position.

According to the invention described in claim 2, according to claim 1,
In addition to the effects of the invention, the drive shaft can be inserted into the through hole of the rib piece, the teeth and the gear can be meshed at an appropriate meshing position, and the drive shaft and the door body can be sub-assembled, Even if the drive shaft and the door body move relative to each other in the rotation direction of the shaft, the meshing relationship between the teeth and the gear does not change, so that the direction in which the door body and the drive shaft are assembled to the case is restricted. It is possible to properly assemble the case in any assembling posture, and the assembling workability can be further improved.

Further, since the door body and the drive shaft can be sub-assembled, the number of man-hours for parts management can be reduced.

Further, since the rib pieces are protruded from the door body, the door body can be reinforced and the deformation of the door body can be avoided.

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, the provisional holding means is a hook for engaging with the drive shaft, so that the structure is simple and the door body can be easily formed. Can be.

Further, since the drive shaft can be sub-assembled to the door main body via the hook portion, the assembling workability can be further improved.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a case of an air conditioning unit, and the case 1 is a split type case 1A, 1
The evaporator 3 and the heater core 4 are arranged in this order in the case 1 from the upstream side of the air blown from a blower unit (not shown) connected to the blower connection port 2 in the case 1. It is.

Between the evaporator 3 and the heater core 4, the cool air passing through the evaporator 3 is directed downward through the lower opening 5 a provided in the partition 5 to the heater core 4, or upward through the upper opening 5 b to bypass the heater core 4. And an air mixing door 6 serving as a control door for selectively allowing the cool air to flow to the above or distributing the cool air to both of them at an appropriate ratio, and the cool air passing through the evaporator 3 through the upper portion of the heater core 4. And an air mixing chamber 7 in which the hot air passing through the heater core 4 is mixed.

A vent outlet 8 and a defroster outlet 9 are provided on the upper wall of the case 1 above the air mix chamber 7 adjacent to each other in the front-rear direction, and the defroster outlet 9 is provided on the side wall of the case 1. An adjacent side defroster outlet 10 is provided.

A partition wall 1 is provided behind the air mixing chamber 7.
1 separates the foot passage 12.

The foot passage 12 extends vertically in the case 1 and has a foot outlet 13 at a lower end, and an upper portion communicates with the air mix chamber 17 near the vent outlet 8.

A rear vent outlet 14 is provided in the lower rear wall of the foot passage 12 near the foot outlet 13.

Reference numerals 15, 16, and 17 denote a vent door 8, a defroster outlet 9, and a vent door, a differential door, and a foot door as control doors provided in the foot passage 12, respectively. The foot door 17 includes a foot outlet 13 and a rear vent outlet. A flap door for switching the ventilation to 14 is used.

On the other hand, the air mix door 6, the bend door 15, and the differential door 16 are all door bodies 6a, 15
a, 16a is configured as a slide type that slides along the partition 11 or the upper wall of the case 1 to open and close the openings 5a, 5b or the vent outlet 8 and the defroster outlet 9,
The differential door 16 has its front end bent downward so that the side defroster outlet 10 can be opened and closed.

The door bodies 6a, 15a and 16a are formed in an arc shape in conformity with the curved shapes of the partition wall 5 and the upper wall of the case 1 so as to slide along the curved shapes.

On the side wall of the case 1, two pairs of guide grooves 18 formed in an arc shape are provided along the partition wall 5 and the upper wall of the case 1, while each of the door bodies 6a, 15 is provided.
a, 16a, the two pairs of guide grooves 1 above and below the left and right ends.
The guide grooves 19 and the guide pins 19 are fitted to the door body 6a, 15a, 1
6a constitutes the slide guide means.

The guide groove 18 is provided in each door body 6a, 15a,
The groove ends for regulating the closing positions of the openings 5a and 5b and the vent outlets 8 and the defroster outlets 9 by 16a are bent toward the upper wall of the partition wall 5 and the case 1, and the guide pins 19 are bent. By being guided to the groove end,
The door bodies 6a, 15a, and 16a are moved toward the upper wall of the partition wall 5 and the case 1 at their closed positions, and the peripheral edges of the arc-shaped convex surfaces of the door bodies 6a, 15a, and 16a are closed. At the position, a seal member 20 is provided which is in close contact with the peripheral edges of the openings 5a, 5b, the vent outlet 8 and the defroster outlet 9.

The sliding movement of the door bodies 6a, 15a, 16a is performed by the teeth 22 provided on both side edges of the concave circular surface,
A gear mechanism 21 including a gear 23 meshed with the tooth portion 22
It is performed by the operation of.

The gear 23 is rotatably supported by a driving mechanism (not shown) which is rotatably supported by a driving mechanism (not shown).
4, the gear 23 is provided with a tooth portion having a high tooth height so that the doors 6a, 15a, 16a are closed at the closed positions of the doors 6a, 15a, 16a. Thereby, the partition wall 5 is pushed toward the upper wall of the case 1.

Here, the drive shaft 24 is temporarily held at a fixed position on each door body 6a, 15a, 16a by a temporary holding means 25 in a state where the gear 23 is meshed with the tooth portion 22.

In FIG. 1, the vent door 15 and the differential door 1
The temporary holding means 25 in the air mix door 6 is not shown in FIGS.
5 is shown as a representative.

In this embodiment, the temporary holding means 25 is
A pair of rib pieces 26 protruding in parallel with the tooth portion 22 on the arcuate concave surface of the door body 6a and a through hole 27 provided on the rib piece 26 and through which the drive shaft 24 is slidably inserted. Make up.

The through hole 27 has a hole width slightly larger than the diameter of the drive shaft 24 and is formed in an arc shape along the sliding movement trajectory of the door body 6a, and the end of the hole is in the direction opposite to the bent end of the guide groove 18. It is bent.

The drive shaft 24 is formed in the through hole 2 of the rib piece 26.
7, and is sub-assembled to the door body 6a in a state where the engagement posture (position) of the gear 23 with respect to the tooth portion 22 is appropriately adjusted.

According to the structure of the above embodiment, when assembling the door body 6a and the drive shaft 24 to the case 1, the both ends of the drive shaft 24 are connected to the bearing holes 25 in the side walls of the split cases 1A and 1B. And the guide pins 19 at the side ends of the door body 6a are engaged with the guide grooves 18 on the side walls of the split cases 1A and 1B.
The mating ends of the casings A and 1B on the center side of the case are fitted and fixed by bonding. The driving shaft 24 is inserted through the through hole 25 of the rib piece 26 constituting the temporary holding means 25 of the door body 6a. Since the gear 23 is sub-assembled to the door body 6a in a state where the gear 23 is meshed with the tooth portion 22 of the door body 6a in an appropriate posture, the door body 6a and the drive shaft 24 do not shift during the assembly. Even when the drive shaft 14 is not held by hand, the meshing relationship between the tooth portion 22 and the gear 23 is not disturbed, that is, even if the drive shaft 14 slides in the through hole 25 of the rib piece 26, The meshing relationship between the part 22 and the gear 23 does not collapse.

Therefore, the end of the drive shaft 24 is
When the door body 6a is inserted into the bearing holes 25 of A and 1B, the guide pin 19 may be engaged with the guide groove 18 at any sliding position. Since the distance is maintained, the guide pin 19 can be aligned with the guide groove 18 by inserting the drive shaft 24 into the bearing hole 25 as described above.
The workability of assembling the door body 6a and the drive shaft 24 can be further improved.

The drive shaft 24 is connected to the door main body 6a by the teeth 2
Since the subassembly is performed without breaking the meshing relationship between the gear 2 and the gear 23, the case 1 is turned upside down or
It is possible to perform the assembly work by changing the posture to the direction in which the worker is most comfortable to work, such as a direction in which the phase is changed by 0 ° or a direction in which the worker is laid obliquely, so that the assembling workability is further improved. Can be.

Further, since the rib pieces 26 are protruded from the door body 6a, the door body 6a can be reinforced and the deformation of the door body 6a due to heat or the like can be avoided.

Here, FIG. 3A shows the full hot mode in which the upper opening 5b is closed by the door body 6a, the lower opening 5a is fully opened, and all the cool air passing through the evaporator 3 is introduced into the heater core 4. (B) shows the air mix mode in which the upper opening 5b and the lower opening 5a are half-opened, and (c) shows the cold air that has passed through the evaporator 3 by closing the lower opening 5a and fully opening the upper opening 5b. In the full-cool mode in which all of the air flow is guided around the heater core 4.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, provisional holding means 25 is provided on both sides of an arc-shaped concave surface of a door body 6a as hook portions 29 for engaging with a drive shaft 24. is there.

In this embodiment, the hook portion 29 is connected to the first
Although the shape of the upper end of the rib piece 26 and the through hole 27 in the embodiment is configured as such, it is not particularly limited to this shape. Anything that can be engaged may be used.

Therefore, in this embodiment, the drive shaft 24 is temporarily held on the door body 6a by engaging the drive shaft 24 with the hook portion 29 in a state where the tooth portion 22 and the gear 23 are properly engaged. The workability of assembling the door main body 6a and the drive shaft 24 can be improved in substantially the same manner as in the first embodiment, and the hook 29 and the drive shaft 24 can be connected with an adhesive tape or the like. The drive shaft 24 can be fixed and sub-assembled to the door body 6a.

The temporary holding means 25 is not limited to the above embodiments, but may be a structure which can temporarily hold the drive shaft 24 at a fixed position on the door body 6a in a state where the teeth 22 and the gear 23 are meshed. Should be fine.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view around an air mix door according to the first embodiment of the present invention.

FIGS. 3A, 3B, and 3C are cross-sectional views illustrating respective operation modes of the air mix door according to the first embodiment of the present invention.

FIG. 4 is a view showing a main part of a second embodiment of the present invention;
Sectional drawing similar to.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 6,15,16 Control door 6a, 15a, 16a Door main body 18,19 Slide guide means 21 Gear mechanism 22 Tooth part 23 Gear 24 Drive shaft 25 Temporary holding means 26 Rib piece 27 Through hole 29 Hook part

Claims (3)

[Claims] A control door (6), (15), disposed in a case (1) for controlling ventilation in the case (1).
(16) to the door bodies (6a), (15a), (16)
slide guide means (18), (19) provided on the side end of (a) and the side wall of the case (1) and engaged with each other;
The teeth (22) provided on the door bodies (6a), (15a) and (16a) and the drive shaft (24) which is supported by being penetrated through the side wall of the case (1) and fixed to the teeth (22). 22) and a gear mechanism (21) including a gear (23) meshed with the door body (6).
a), (15a) and (16a) are provided with temporary holding means (25) for temporarily holding the drive shaft (24) in a fixed position in a state where the teeth (22) and the gear (23) are meshed with each other. An air conditioner for automobiles, characterized by 2. The temporary holding means (25) is connected to a door body (6).
a), (15a), rib pieces (2) protruding from (16a).
6) and the door pieces (6a), (15)
2. A vehicle air according to claim 1, wherein the drive air is formed along the movement trajectory of a) and (16a), and the drive shaft is slidably inserted through the through hole. Harmony equipment. 3. The temporary holding means (25) is connected to a door body (6).
a), (15a), and (16a).
The air conditioner for an automobile according to claim 1, wherein the air conditioner is configured as a hook portion (29) that engages with (4).