JP3006050B2 - Vehicle air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air conditioner for a vehicle that uses a film damper to control the temperature of blown air or switch an outlet.

2. Description of the Related Art Conventionally, an air conditioner for a vehicle adopts a film-shaped damper as an air outlet switching damper for switching an air outlet of a blown air or as an air mix damper for controlling a temperature of a blown air. (See JP-A-1-141116 and JP-A-61-98609).

This film-shaped damper is formed in a belt shape, and both ends thereof are respectively fixed to a driving-side winding shaft driven by a motor and a driven-side winding shaft connected to the driving-side winding shaft by a belt. The drive-side winding shaft and the driven-side winding shaft are provided so as to slide between the two winding shafts in accordance with the rotation thereof.

[Problems to be Solved by the Invention] However, in such a film-like damper, tension cannot always be applied to the damper.
The sag occurs in the damper. As a result,
There was a problem that a rattling sound was generated.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a vehicle air conditioner that can reduce wind leakage and reduce fluttering noise.

[Means for Solving the Problems] The present invention employs the following technical means in order to achieve the above object.

(Claim 1) A vehicle comprising a film-shaped damper having an opening, and a ventilation-port switching means for switching a ventilation port through which air passes by sliding the film-shaped damper to change the position of the opening. An air conditioner for use, wherein the ventilation port switching means includes one winding shaft that supports one end of the film-shaped damper, and the other winding shaft that supports the other end of the film-shaped damper. A driving unit that is rotatably provided and drives the other winding shaft to rotate in a direction of winding the film damper by rotating forward; and when the film damper is wound around the other winding shaft. Elastic force applying means for applying the stored elastic force to the one winding shaft as a rotational force for rotating the film-shaped damper in a direction in which the film-shaped damper is wound. Ri rotational force said applied to one of the winding shaft is greater than the operating force of the film-like damper, and being smaller than the holding force of said driving means.

(Claim 2) The elastic force applying means has a spring, and the elastic force is stored in the spring as the driving means rotates forward and the film-shaped damper is wound around the other winding shaft. And the maximum elastic force of the spring obtained when the entire film-shaped damper is wound around the other winding shaft is set to be smaller than the holding force of the driving means.

(Claim 3) A vehicle comprising a film-shaped damper having an opening, and a ventilation-port switching means for switching a ventilation port through which air passes by changing the position of the opening by sliding the film-shaped damper. An air conditioner for use, wherein the ventilation port switching means, a first winding shaft supporting one end of the film-shaped damper, a second winding shaft supporting the other end of the film-shaped damper, A driven shaft that is provided on at least one of the first winding shaft and the second winding shaft and that is provided so as to be rotatable relative to the one winding shaft, and rotationally drives the one winding shaft. A driving unit, an elastic force applying unit provided between the one winding shaft and the driven shaft to apply an elastic force therebetween, and the one winding shaft in a direction in which the film-shaped damper is sent out. When rotating, the one winding A driving force transmitting means for transmitting a driving force transmitted from the shaft to the driven shaft via the elastic force applying means to the other winding shaft, wherein the elastic force of the elastic force applying means is the driven shaft Is applied as a rotational force that relatively rotates the one winding shaft in a direction in which the film-shaped damper is wound, and the rotational force is larger than the operation force of the film-shaped damper and smaller than the holding force of the driving unit. It is characterized by the following.

(Claim 4) A vehicle comprising a film-shaped damper having an opening, and a ventilation-port switching means for switching a ventilation port through which air passes by changing the position of the opening by sliding the film-shaped damper. An air conditioner for use, wherein the ventilation port switching means, a first winding shaft supporting one end of the film-shaped damper, a second winding shaft supporting the other end of the film-shaped damper, The driven shaft provided on at least one of the first winding shaft and the second winding shaft and rotatably provided relative to the one winding shaft, and rotationally driving the other winding shaft. A driving means, and a driving force transmitting means for transmitting a driving force from the other winding shaft to the driven shaft when the driving means rotationally drives the other winding shaft in a direction in which the film-shaped damper is sent out. And the one winding shaft An elastic force applied between the driven shaft and the driven shaft, the elastic force being applied between the driven shaft and the driven shaft via the driving force transmitting means; The elastic force of the elastic force applying means is applied as a rotational force that relatively rotates the driven shaft in a direction in which the one winding shaft winds the film-shaped damper, and the rotational force is the rotational force. It is characterized by being larger than the operating force of the film damper and smaller than the holding force of the driving means.

(Claim 5) The elastic force applying means has a spring, and is provided in a state where a predetermined elastic force is stored between the one winding shaft and the driven shaft.

(Claim 6) The driving force transmitting means includes a first pulley provided on the other winding shaft, a second pulley provided on the driven shaft, the first pulley, and the second pulley. And connecting means for connecting the pulleys. It is needless to say that the second pulley provided on the driven shaft may be provided integrally with the driven shaft.

(Claim 7) In the air conditioner for a vehicle including a heater core for heating the blown air, the ventilation port switching means adjusts a ratio of an amount of air passing through the heater core and an amount of air bypassing the heater core. Therefore, it is used as a temperature adjusting means for adjusting the temperature of the blown air.

(Claim 8) The ventilation port switching means is used as an air outlet switching means for switching the blowing air outlet.

[Operation] (Claims 1 and 2) When the driving means is rotated, a rotational force is applied to the other winding shaft, so that the film-shaped damper is wound around the other winding shaft. When the driving means is rotated in the reverse direction, the film-shaped damper wound on the other winding shaft is sent out from the other winding shaft, and receives the rotational force given by the elastic force applying means. When the shaft rotates, the film-shaped damper is wound around one of the winding shafts.

In the above operation, even when the movement of the film-shaped damper is stopped, the rotational force is always applied to the one winding shaft in the direction of winding the film-shaped damper. And the other winding shaft is always under tension. The “operating force of the film-shaped damper” described in claim 1 is a force capable of winding the film-shaped damper around one of the winding shafts, and the “holding force of the driving means” is defined as the driving means. Is a force capable of maintaining (holding) the state in which the output shaft (rotary shaft) is stopped rotating.

(Claim 3) When one of the winding shafts is driven to rotate in a direction in which the film-shaped damper is sent out by the driving means, the driving force is transmitted to the driven shaft via the elastic force applying means, and further the driving force transmission means is transmitted from the driven shaft. Is transmitted to the other take-up shaft. Thereby, one winding shaft and the other winding shaft rotate in the same direction, so that the film-shaped damper sent from one winding shaft can be wound on the other winding shaft.

Further, the elastic force of the elastic force applying means provided between one of the winding shafts and the driven shaft is a rotational force relative to the driven shaft in which one of the winding shafts rotates in a direction of winding the film-shaped damper. Has been granted. Therefore, tension is always applied to the film-shaped damper between one winding shaft and the other winding shaft.

(Claim 4) When the other winding shaft is rotationally driven by the driving means in the direction in which the film-shaped damper is sent out, the driving force is transmitted to the driven shaft via the driving force transmission means, and the elastic force applying means is further transmitted from the driven shaft. And transmitted to one of the winding shafts. Thus, the other winding shaft and the one winding shaft rotate in the same direction, so that the film-shaped damper sent from the other winding shaft can be wound around the one winding shaft.

Further, the elastic force of the elastic force applying means provided between one of the winding shafts and the driven shaft is a rotational force relative to the driven shaft in which one of the winding shafts rotates in a direction of winding the film-shaped damper. Has been granted. Therefore, tension is always applied to the film-shaped damper between one winding shaft and the other winding shaft.

(Claim 5) The elastic force applying means according to claims 3 and 4 has a spring, and the spring is provided in a state where a predetermined elastic force is stored between one of the winding shaft and the driven shaft. The elastic force is applied as a rotational force that relatively rotates the driven shaft in a direction in which one of the winding shafts winds the film-shaped damper.

(Claim 6) The driving force transmitting means according to claims 3 and 4 is a first pulley provided on the other winding shaft, a second pulley provided on the driven shaft, and a first pulley. And a connecting means for connecting the second pulley and the second pulley. The driving force can be transmitted between the first pulley and the second pulley via the connecting means.

(Claim 7) The ventilation port switching means includes: an air amount passing through the heater core;
By adjusting the ratio to the amount of air bypassing the heater core, it can be used as a temperature adjusting means for adjusting the temperature of the blown air.

(Claim 8) The ventilation port switching means can be used as an outlet switching means for switching the blowing air outlet.

[Effects of the Invention] According to the present invention having the above-described action, tension is always applied to the film-shaped damper not only when the film-shaped damper is moved but also in a stopped state, so that the film-shaped damper is sagged. As a result, it is possible to suppress the occurrence of wind leakage and fluttering noise.

Next, a vehicle air conditioner of the present invention will be described based on an embodiment shown in the drawings.

 FIG. 1 is a sectional view of the air conditioner.

The air conditioner 1 according to the present embodiment includes a duct 2 that guides blast air into a vehicle interior, a blower 3 that generates an airflow toward the vehicle interior in the duct 2, and a refrigeration cycle disposed in the duct 2. It comprises a refrigerant evaporator 4 and a heater core (heater) 5 using the engine cooling water as a heat source.

At the downstream end of the duct 2, a ventilation outlet 6, a defroster outlet 7, and a heater outlet 8 for blowing out the temperature-controlled blast air to various parts in the vehicle compartment are provided.

The temperature adjustment of the blown air flowing through the duct 2 and the switching of the outlets 6 to 8 are performed according to the setting mode of a temperature setting lever (not shown) provided on the control panel of the driver's seat. This is performed by the means and the outlet switching means.

As shown in FIG. 2, the temperature control means and the air outlet switching means comprise flexible film dampers 9, 10 having openings 9a, 10a for allowing air to pass therethrough, Winding shafts (the other winding shafts) 11, 12 having end portions 9 and 10 fixed to support the film dampers 9 and 10
And winding shafts (one winding shaft) 13, 14 and winding shafts 11, 12
Motors (drive means) 15 and 16 for rotating and driving, and a spiral coil (elastic force applying means) 1 for applying a rotational force to the winding shafts 13 and 14 in a direction of winding the film-shaped dampers 9 and 10.
7 and 18. In addition, the outlet switching means includes:
Intermediate shafts (see FIG. 1) 19 and 20 for sliding the film dampers 9 and 10 in parallel with the respective outlets 6 to 8 are added.

FIG. 3 shows an overall view of the air outlet switching means, and FIG. 4 shows a state of attachment of the film damper 10.

The film-shaped dampers 9 and 10 are made of, for example, polyethylene resin, and slide between the winding shafts 11 and 12 and the winding shafts 13 and 14, so that the positions of the openings 9a and 10a are displaced. Temperature control and switching of each of the outlets 6 to 8 are performed.
The temperature adjustment is performed by adjusting the mixing ratio of the amount of air passing through the heater core 5 and the amount of air bypassing the heater core 5.

The winding shafts 11 and 12 are rotatably supported on both side walls of the duct 2.

The winding shafts 13 and 14 are, as shown in FIG.
First shaft portions 21 and 22 formed with hollow cylindrical portions 21a and 22a for housing 17 and 18 are joined to the first shaft portions 21 and 22 in the axial direction, and pivot on the side wall of the duct 2. 2nd freely supported
Shafts 23 and 24 are provided.

The first shaft portions 21 and 22 are provided in a stepped cylindrical shape, and the small-diameter cylindrical portions 21b and 22b are rotatably fitted to the shafts 25a and 26a of caps 25 and 26 fixed to the side wall of the duct 2. It is supported by.

The caps 25 and 26 are formed such that the ends of the shafts 25a and 26a have a D-shaped cross section. Further, two claws 25b and 26b for fixing the caps 25 and 26 to the side wall of the duct 2 are provided on the outer periphery of the shafts 25a and 26a.

One end of each of the spiral coils 17 and 18 incorporated in the hollow cylindrical portions 21a and 22a of the first shaft portions 21 and 22 is inserted into locking holes 23a and 24a formed on end surfaces of the second shaft portions 23 and 24. And is fixed to the winding shafts 13 and 14, and the other end is formed in a D-shaped cross section.
5, 26 are locked to shafts 25a, 26a.

The spiral coils 17 and 18 are configured so that the spring force increases as the film-shaped dampers 9 and 10 are wound on the winding shafts 13 and 14 from the state where they are wound on the winding shafts 13 and 14, The spiral coils 17, 18 are assembled so that they are twisted.

Further, as shown in FIG. 5, the spiral coils 17, 18 are rotated by a rotational force greater than an operating force F1 required to rotationally drive the winding shafts 11, 12 to slide the film-shaped dampers 9, 10. A spring force F2 that can apply a force to the winding shafts 13 and 14 is set. That is, in FIG. 5, the position of point a indicates a state in which the film-shaped dampers 9 and 10 are wound around the winding shafts 13 and 14, and the position of point b indicates a state in which the film-shaped dampers 9 and 10 are wound around the winding shaft. 11 and 12 show the rolled state. The spring force of the spiral coils 17, 18 at point b in FIG.
It goes without saying that F2 is smaller than the holding force of the servomotors 15 and 16. The “holding force of the servo motors 15 and 16” is a force that holds the state where the servo motors 15 and 16 stop the output shaft.

 Next, the operation of the present embodiment will be described.

Depending on the setting mode of the temperature setting lever, the film-shaped dampers 9 and 10 are wound around the winding shafts 11 and 12 or the winding shafts 13 and 14 and slid, thereby opening the openings 9a and 10a.
Is displaced, the temperature of the blown air is adjusted, and the outlets 6 to 8 are switched.

At this time, when the film-shaped dampers 9 and 10 are wound around the winding shafts 11 and 12, the winding shafts 11 and 12 are
This is performed by rotating the film dampers 9 and 10 around the winding shafts 13 and 14.
The servo motors 15 and 16 are rotated in the reverse direction, and the spring force F2 of the spiral coils 17 and 18 overcomes the operation force F1 required to slide the film-shaped dampers 9 and 10 to take up the winding shafts 13 and 14. This is done by rotating.

In this way, the spring forces F2 of the spiral coils 17, 18 act on the winding shafts 13, 14, so that the winding shafts 13, 14 are always rotated in the direction in which the film-shaped dampers 9, 10 are wound. Power has been imparted. For this reason, even when the movement of the film dampers 9 and 10 is stopped, tension is always applied to the film dampers 9 and 10 between the winding shafts 11 and 12 and the winding shafts 13 and 14. Become.

As a result, it is possible to suppress the occurrence of wind leakage and fluttering noise without causing sagging of the film-shaped dampers 9 and 10. As shown in FIG. 6, by increasing the tension T applied to the film-shaped dampers 9, 10, the vibration level of the film-shaped dampers 9, 10 is reduced, and the fluttering noise is also reduced.

FIGS. 7 to 9 illustrate a second embodiment of the present invention.

FIG. 7 is an overall perspective view of the temperature control means and the blow-off switching means.

In the present embodiment, a rotating shaft (the winding shaft of the present invention) provided so as to be relatively rotatable with respect to the winding shafts (one winding shaft) Driven shaft) 13
a, 14a, and the rotating shafts 13a, 14a and the winding shafts (the other winding shafts) 11, 12 are connected via driving force transmitting means.

The driving force transmitting means is, as shown in FIG.
First pulleys (driving force transmitting means) 33, 34 fixed to the ends of 11, 12 and second pulleys fixed to the ends of the rotating shafts 13a, 14a.
Pulleys (driving force transmission means) 29, 30 and pulleys 33, 34
And belts 27 and 28 connecting the pulleys 29 and 30 to each other.

As a result, the rotational force of the winding shafts 11 and 12 rotationally driven by the servo motors 15 and 16 is transmitted to the rotating shafts 13a and 14a via the driving force transmitting means, and the rotation of the rotating shafts 13a and 14a is further reduced. Power is transmitted to the winding shafts 13 and 14 via the spiral coils 17 and 18.

The spiral coils 31, 32 constantly apply a rotational force to the winding shafts 13, 14 in a direction in which the winding shafts 13, 14 wind the film-shaped dampers 9, 10 with respect to the rotating shafts 13a, 14a. . Spiral coil
It is needless to say that the spring force F2 of 31, 32 is larger than the operation force F1 required to slide the film dampers 9, 10, and smaller than the holding force of the servomotors 15, 16 (see FIG. 5).

The temperature adjusting means and the blow-off switching means having the above-described configuration rotate the winding shafts 11 and 12 by the servo motors 15 and 16 to rotate the winding shafts 13 through the driving force transmitting means.
a and 14a also rotate in the same direction. At this time, the winding shafts 13 and 14
The spring force F2 of the spiral coils 31, 32 between the rotating shafts 13a, 14a
Is acting on the rotating shafts 13a and 14a, the film-shaped dampers 9 and 10 tend to rotate in the winding direction. Thus, the film-shaped dampers 9 and 10 have the winding shafts 11 and 12 attached thereto.
And the winding shafts 13 and 14 are always under tension T.

As a result, similarly to the first embodiment, the film dampers 9 and 10 can be prevented from sagging, and the occurrence of wind leakage and rattling noise can be suppressed.

In this embodiment, the winding shafts 13 and 14 and the rotating shafts 13a and 14a
With the spiral coils 31, 32 interposed between them, the winding shaft 13,
Although a rotational force is applied to the film dampers 14 in the direction in which the film-shaped dampers 9 and 10 are wound, the winding shafts 11 and 12 are similarly configured, and the film-shaped dampers 9 and 10 are mounted on the winding shafts 11 and 12. A rotating force may be applied in the winding direction. Or take-up shaft
Film dampers 9 and 10 are mounted on both 11, 12 and winding shafts 13 and 14.
May be configured to apply a rotational force in the winding direction.

Further, in the first embodiment and the second embodiment, the configuration of the present invention is applied to both the temperature adjusting unit and the outlet switching unit. However, the configuration may be applied to only one of the temperature adjusting unit and the outlet switching unit. good.

[Brief description of the drawings]

1 to 6 show a first embodiment of the present invention. FIG. 1 is a sectional view of an air conditioner, FIG. 2 is an exploded perspective view of a temperature control means and an outlet switching means, FIG. FIG. 4 is an overall view of the outlet switching means, FIG. 4 is a cross-sectional view showing a mounted state of a film damper applied to the outlet switching means, FIG. 5 is a graph illustrating a use range of the spiral coil, FIG. Fig. 7 is a graph showing the relationship between the tension applied to the film damper and the vibration value. Figs. 7 to 9 show a second embodiment of the present invention. Fig. 7 shows temperature control means and outlet switching means. 8 is an exploded perspective view of the winding shaft, and FIG. 9 is a sectional view of the winding shaft. In the drawings (common to the first embodiment and the second embodiment) 1. Air conditioner 5. Heater core 6. Ventilation outlet 7. Defroster outlet 8. Heater outlet 9, 10, film Damper 9a, 10a Opening 15, 16 Servo motor (drive means) 11, 12 Winding shaft (the other winding shaft) 13, 14 Winding shaft (one winding shaft) ( 1st embodiment) 17, 18 ... spiral coil (elastic force applying means) (2nd embodiment) 13a, 14a ... rotating shaft (driven shaft) 27, 28 ... belt (connecting means / driving force transmission) Means) 29, 30… Second pulley (driving force transmitting means) 31, 32… Spiral coil (elastic force applying means) 33, 34… First pulley (driving force transmitting means)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60H 1/00 102

Claims (8)

(57) [Claims] 1. A vehicle comprising a film-shaped damper having an opening, and a ventilation-port switching means for switching a ventilation port through which air passes by changing the position of the opening by sliding the film-shaped damper. An air conditioner for use, wherein the ventilation port switching means comprises: one winding shaft that supports one end of the film-shaped damper; and the other winding shaft that supports the other end of the film-shaped damper. A driving unit that is rotatably provided and that rotates the other winding shaft in the direction of winding the film damper by rotating forward; and when the film damper is wound around the other winding shaft. Elastic force applying means for applying the stored elastic force to the one winding shaft as a rotational force for rotating the film-shaped damper in a direction of winding the film-shaped damper; Rotational force applied to more the one winding shaft, the film-like greater than the operating force of the damper, and air conditioning apparatus for a vehicle and is smaller than the holding force of said driving means. 2. The elastic force applying means includes a spring, and the elastic force stored in the spring as the drive means rotates forward and the film-shaped damper is wound on the other winding shaft. Is increased, and the maximum elastic force of the spring obtained when the entire film-shaped damper is wound around the other winding shaft is set to be smaller than the holding force of the driving means. The vehicle air conditioner according to claim 1, wherein 3. A vehicle having a film-shaped damper having an opening, and having a ventilation-port switching means for switching a ventilation port through which air passes by changing the position of the opening by sliding the film-shaped damper. An air conditioner for use, wherein the ventilation port switching means comprises: a first winding shaft supporting one end of the film-shaped damper; a second winding shaft supporting the other end of the film-shaped damper; A driven shaft that is provided on at least one of the first winding shaft and the second winding shaft and that is provided so as to be rotatable relative to the one winding shaft; and drives the one winding shaft to rotate. A driving unit, an elastic force applying unit provided between the one winding shaft and the driven shaft, and applying an elastic force therebetween, and the one winding shaft in a direction in which the film-shaped damper is sent out. When rotating, the one A driving force transmitting means for transmitting a driving force transmitted from the winding shaft to the driven shaft via the elastic force applying means to the other winding shaft, wherein the elastic force of the elastic force applying means is The one winding shaft is applied to the driven shaft as a rotational force that relatively rotates in a direction in which the film-shaped damper is wound, and the rotational force is greater than the operating force of the film-shaped damper, and the holding force of the driving means. An air conditioner for a vehicle, wherein the air conditioner is smaller. 4. A vehicle comprising a film-shaped damper having an opening, and a ventilation-port switching means for switching a ventilation port through which air passes by changing the position of the opening by sliding the film-shaped damper. An air conditioner for use, wherein the ventilation port switching means comprises: a first winding shaft supporting one end of the film-shaped damper; a second winding shaft supporting the other end of the film-shaped damper; A driven shaft provided on at least one of the first winding shaft and the second winding shaft and provided so as to be rotatable relative to the one winding shaft, and rotationally driving the other winding shaft. A driving means, and a driving force transmitting means for transmitting a driving force from the other winding shaft to the driven shaft when the driving means rotationally drives the other winding shaft in a direction in which the film-shaped damper is sent out. And the one winding An elastic force that is provided between a shaft and the driven shaft to apply an elastic force between the two and to transmit the driving force transmitted to the driven shaft via the driving force transmitting means to the one winding shaft; And an elastic force of the elastic force applying means is applied as a rotational force that causes the one winding shaft to rotate relative to the driven shaft in a direction in which the film-shaped damper is wound. Is larger than the operating force of the film damper and smaller than the holding force of the driving means. 5. The apparatus according to claim 1, wherein said elastic force applying means has a spring and is provided with a predetermined elastic force stored between said one winding shaft and said driven shaft. Item 4. The air conditioner for a vehicle according to items 3 and 4. 6. The driving force transmitting means includes a first pulley provided on the other winding shaft, a second pulley provided on the driven shaft, the first pulley, and the second pulley. 6. A connecting means for connecting said pulley to said pulley.
2. The air conditioner for a vehicle according to claim 1. 7. A vehicle air conditioner comprising a heater core for heating blast air, wherein the ventilation port switching means adjusts a ratio between an amount of air passing through the heater core and an amount of air bypassing the heater core. The air conditioner for a vehicle according to any one of claims 1 to 6, wherein the air conditioner is used as temperature control means for controlling the temperature of the blown air. 8. The air conditioner for a vehicle according to claim 1, wherein said ventilation port switching means is used as an air outlet switching means for switching an air outlet of blowing air.