JPH0487826A - Air conditioning device for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vehicle air conditioner that uses a film-like damper to adjust the temperature of blown air or to switch the outlet.

[Prior Art] Conventionally, in vehicle air conditioners, film dampers have been used as outlet switching dampers that switch the outlet of blown air, or as air mix dampers that control the temperature of blown air. Yes (Unexamined Japanese Patent Publication No. 1999)
(See Japanese Utility Model Application Publication No. 141116, Japanese Utility Model Application No. 61-98609).

This film-like damper is formed into a band shape, and its both ends are fixed to a driving side winding shaft driven by a motor and a driven side winding shaft connected to this driving side winding shaft by a belt. The winding shaft is provided to slide between the driving winding shaft and the driven winding shaft as the driving winding shaft and the driven winding shaft rotate.

[Problems to be Solved by the Invention] However, with such a film-like damper, it is not possible to maintain tension on the damper at all times, and sag occurs in the damper, resulting in air leakage, The problem was that it produced a flapping sound.

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

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

(Claim 1) A duct for guiding blown air into the vehicle interior, a heater disposed within the duct, and adjusting the ratio of air passing through the heater and air bypassing the heater. A temperature control means for controlling the temperature of the blown air, a plurality of air outlets for blowing out the temperature-adjusted air to various locations in the vehicle interior, and an air outlet switching means for selectively opening these air outlets. A vehicle air conditioner comprising one winding shaft and the other winding shaft rotatably supported, and an opening for passing the blown air, and both ends of the one winding shaft and the other winding shaft are rotatably supported. It is fixed to the take-up shaft and the other take-up shaft, and the position of the opening is displaced as the one take-up shaft and the other take-up shaft rotate, thereby adjusting the temperature of the blown air or the opening. a film-like damper that switches each air outlet; a drive means that rotationally drives the one winding shaft; and a film-like damper that rotates the drive means to rotate the film-like damper on the other winding shaft. and a rotational force applying means that always applies a rotational force smaller than the rotational force.

(Claim 2) The temperature adjusting means or the blower outlet switching means includes one winding shaft and the other winding shaft that are rotatably supported;
It has an opening for passing the blown air, and both ends are fixed to the one winding shaft and the other winding shaft,
a film-like damper that adjusts the temperature of the blown air or switches between the air outlets by displacing the position of the opening with rotation of the one winding shaft and the other winding shaft; A driving means for rotationally driving one winding shaft, and a drive means that connects the one winding shaft and the other winding shaft, and transfers the rotational force applied to the one winding shaft to the other winding shaft. a rotational force transmission means for transmitting to a take-up shaft, the one take-up shaft or the other take-up shaft being rotatably supported and engaged with the rotational force transmission means; and a cylindrical shaft fitted around the outer periphery of the rotation shaft in a rotatable cage with respect to the rotation shaft, and to which the end of the film-like damper is fixed, and the rotation shaft and the cylindrical shaft and rotation that constantly applies a rotational force smaller than the rotational force of the driving means to the cylindrical shaft so that the cylindrical shaft rotates in the direction of winding up the film damper with respect to the rotating shaft. The technical means is that a force applying means is provided.

[Function] In the invention according to claim 1, a rotational force in the direction of winding up the film damper is applied to the other winding shaft, and the rotational force is set smaller than the rotational force of the driving means.

Therefore, when one winding shaft is rotationally driven in the direction in which the film damper is wound up by the driving means, the film damper slides toward the one winding shaft. Furthermore, when one of the take-up shafts is rotationally driven in the direction in which the film-like damper is sent out by the drive means, the rotational force applied to the other take-up shaft causes the film-like damper to Slide toward the shaft side.

In the above operation, even when the movement of the film damper is stopped, the other winding shaft is always applied with a rotational force in the direction of winding the film damper. Tension is always applied between one winding shaft and the other winding shaft.

In the invention according to claim 2, one winding shaft and the other winding shaft are connected by the rotational force transmission means, and the rotational force applied to one winding shaft by the driving means is transmitted to the other winding shaft. transmitted to.

Therefore, when one winding shaft is rotationally driven by the driving means, the other winding shaft is also rotated in the same direction as one winding shaft through the rotational force transmission means, so that the film-like damper It slides according to the rotation direction of one winding shaft and the other winding shaft.

In addition, a rotational force is applied to the cylindrical shaft of one winding shaft or the other winding shaft to which the end of the film damper is fixed, in the direction of winding the film damper with respect to the rotating shaft. Therefore, tension is always applied to the film damper between one winding shaft and the other winding shaft.

[Effects of the Invention] According to the present invention having the above-mentioned effects, tension is always applied to the film damper not only when the film damper is moving but also when it is stopped, so that the film damper does not sag. As a result, wind leakage and flapping noise can be suppressed.

[Example] Next, a vehicle air conditioner according to the present invention will be described based on an example shown in the drawings.

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

The air conditioner 1 of this embodiment includes a duct 2 that guides blown air into a vehicle interior, a blower 3 that generates an air flow toward the vehicle interior within the duct 2, and a refrigeration cycle disposed within the duct 2. It is comprised of a refrigerant evaporator 4, a heater core (heater) 5 that uses engine cooling water as a heat source, and the like.

At the downstream end of the duct 2, there is a ventilation outlet 6 for blowing out temperature-controlled air to various parts of the vehicle interior.
A defroster blowout lower and a heater blowout port 8 are provided.

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

As shown in FIG. 2, the temperature adjustment means and the outlet switching means have openings 9a and 10a for passing the blown air.
A flexible film-like damper 9.10 is formed, and a winding shaft (one winding shaft) that supports the film-like damper 9.10 by fixing the end of the film-like damper 9.10. 11.12 and take-up shaft (other take-up shaft) 13.14
, a servo motor (drive means) 15.16 that rotationally drives the take-up shaft 11.12, and a spiral winder that applies rotational force to the take-up shaft 13.14 in the direction of winding the film damper 9.10. It is composed of coils (rotational force applying means) 17 and 18. In addition, the air outlet switching means includes a film damper 9.
．． An intermediate shaft (see FIG. 1) 19.20 is added for sliding the air outlet 10 parallel to each outlet 6-8.

Incidentally, FIG. 3 shows an overall view of the air outlet switching means, and FIG. 4 shows a state in which the film damper 10 is installed.

The film damper 9.10 is made of polyethylene resin, for example, and when it slides between the winding shaft 11.12 and the winding shaft 13.14, the positions of the openings 9a and 10a are displaced. Temperature adjustment and switching of each outlet 6 to 8 is performed. Note that 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, 12 are rotatably supported on both side walls of the duct 2.

As shown in FIG. 2, the winding shaft 13.14 has hollow cylindrical portions 21a, 22 for housing spiral coils 17.18.
The first @ part 21.22 in which a is formed, and this first shaft part 2
1.22 and a second shaft part 23.24 which is axially joined and rotatably supported on the side wall of the duct 2.

The first shaft portion 21.22 is provided in a stepped cylindrical shape, and its small diameter cylindrical portions 21b, 22b are fitted into shafts 25a, 26a of a cap 25.26 fixed to the side wall of the duct 2, so that the first shaft portion 21.22 is rotatable. is supported by

The tips of the shafts 25a and 26a of the caps 25 and 26 are
It is formed to have a cross-sectional shape. In addition, the shaft 25
Two claws 25b, 26b for fixing the cap 25, 26 to the side wall of the duct 2 are provided on the outer periphery of the a, 26a.
is provided.

The spiral coil 11.18 built in the hollow cylindrical portions 21a to 22a of the first shaft portion 21.22 has one end formed in the end surface of the second shaft portion 23.24 through locking holes 23a and 24a.
A shaft 25a of a cap 25.26 is inserted into the winding shaft 13.14 and fixed to the winding shaft 13.14.
, 26a. .

The spiral coil 17.18 is a film damper 9.10.
is wound up on the winding shaft 13, 14, then the winding shaft 1
The spiral coils 17 and 18 are assembled so that the spring force increases as the spiral coils 17 and 18 are wound up.

Furthermore, as shown in FIG. 5, the spiral coil 17.18 is operated by the operating force F required to rotationally drive the winding shaft 11.12 and slide the film damper 9.10.
A spring force F2 is set which allows a rotational force greater than 1 to be applied to the winding shaft 13.14.

That is, in FIG. 5, the position of point a indicates the state in which the film-like damper 9.10 is wound up on the take-up shaft 13.14, and the position of point b shows the state in which the film-like damper 9.10 is taken up on the take-up shaft. It goes without saying that the spring force F2 of the spiral coil 17.18 at point b in FIG. 5, which shows the coiled state as shown in FIG.

Next, the operation of this embodiment will be explained.

Depending on the setting mode of the temperature setting lever, the film damper 9.10 is placed on the winding shaft 11.12 side or on the winding shaft 13.
By winding up and sliding toward the 14 side, the positions of the openings 9a and 10a are displaced, and the temperature of the blown air is adjusted and the blow-off ports 6 to 8 are switched.

At this time, the film damper 9.10 is attached to the winding shaft 11.1.
In the case of winding on the second side, the winding shaft 11.12 is rotationally driven by the servo motor 15.16, but when winding the film damper 9.10 on the winding shaft 13.14 side, In this case, the servo motor 15.16 is reversely rotated, and the spring force F2 of the spiral coil 17.18 overcomes the operating force F1 necessary to slide the film damper 9.10, and the winding shaft is rotated. This is done by rotating 13.14.

In this way, the spiral coils 17, 1 are attached to the winding shaft 13.14.
Due to the action of the spring force [2] of 8, a rotational force is constantly applied to the winding shaft 13.14 in the direction of winding up the film damper 9.10. Therefore, even when the movement of the film damper 9.10 is stopped, the film damper 9.10 has the winding shaft 11.12, the winding shaft 13.
14, tension will always be applied.

As a result, the film dampers 9 and 10 do not sag, and wind leakage and flapping noise can be suppressed. Note that, as shown in FIG. 6, by increasing the tension T applied to the film damper 9.10, the vibration level of the film damper 9.10 is reduced and the flapping sound is also reduced.

A second embodiment of the present invention will be described with reference to FIGS. 7 to 9.

FIG. 7 is an overall perspective view of the temperature adjusting means and the blower outlet switching means.

In this embodiment, the winding shaft 11.12 and the winding shaft 13.14 are connected via a belt (rotational force transmission means) 27.28, and the winding shaft 1 is driven by a servo motor 15.16.
A rotational force of 1.12 is transmitted to the winding shaft 13.14.

Moreover, the winding shaft 13.14 is shown in FIG. 8 (winding shaft 13.14
As shown in the exploded perspective view of
4a, and cylindrical shafts 13b, 14b which are fitted into rotatable cages on the outer peripheries of the rotary shafts 13a, 14a,
A film damper 9.1 is attached to the cylindrical shafts 13b and 14b.
0 end is fixed.

As shown in FIG. 9 (cross-sectional view of the winding shaft 13.14), one end is fixed to the rotation shaft 13a, 14a and the other end is fixed between the rotation shafts 13a, 14a and the cylindrical shafts 13b, 14b. A spiral coil 1 whose ends are fixed to cylindrical shafts 13b and 14b
7.18 (rotational force applying means) is attached. These spiral coils 17 and 18 have cylindrical shafts 13b and 14b.
This applies a rotational force in the direction of winding up the film damper 9.10, and as in the first embodiment, the operating force F required to slide the film damper 9.10 is applied to the film damper 9.10.
A spring force F2 is set that can apply a rotational force greater than 1 to the cylindrical shafts 13b and 14b (see FIG. 5).

The temperature control means and the air outlet switching means having the above-mentioned configurations are operated by rotationally driving the winding shaft 11.12 by the servo motor 15.16, and by means of the belt 27.28.
The rotation axes 13a, 14a of the winding shafts 13, 14 also rotate in the same direction. At this time, the spring force F2 of the spiral coil 17.18 acts on the cylindrical shafts 13b-14b and tries to rotate the film damper 9.10 in the winding direction. is the winding shaft 11.1
2 and the winding shaft 13, 14 will always be under tension T.

As a result, as in the first embodiment, it is possible to eliminate slack in the film dampers 9 and 10, thereby suppressing air leakage and flapping noise.

In addition, in this embodiment, the winding shaft 13.14 is connected to the rotation shaft 13a.
, 14a and cylindrical shafts 13b, 14b,
The winding shaft 11.12 may be composed of a rotating shaft and a cylindrical shaft, and a rotational force in the direction of winding up the film damper 9.10 may be applied to the cylindrical shaft. Alternatively, the winding shaft 1
Both the winding shaft 1.12 and the winding shaft 13.14 are constituted by a rotating shaft and a cylindrical shaft, so that a rotational force in the direction of winding up the film-like damper 9.10 is applied to both cylindrical shafts, respectively. It may be configured as follows.

Further, in the first and second embodiments, the configuration of the present invention was applied to both the temperature adjustment means and the air outlet switching means, but it may also be applied to only either the temperature adjustment means or the air outlet switching means. good.

[Brief explanation of drawings]

1 to 6 show a first embodiment of the present invention, in which 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, and FIG. Figure 4 is an overall view of the air outlet switching means, Figure 4 is a sectional view showing the mounting state of the film damper applied to the air outlet switching means, Figure 5 is a graph explaining the range of use of the spiral coil, and Figure 6 is a graph explaining the usage range of the spiral coil. The figure is a graph showing the relationship between the tension applied to the film damper and the vibration value, Figures 7 to 9 show the second embodiment of the present invention, and Figure 7 shows the temperature adjustment means and the blower 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 figure (invention according to claim 1) 1... Air conditioner 2... Duct 5... Heater core (heater) 6... Ventilation outlet lower... Defroster outlet 8... Heater Air outlet 9.10... Film damper 9a, 10a... Opening 11.12... Winding shaft (one winding shaft) 13.14.
... Winding shaft (other winding shaft) 15.16 ... Servo motor (driving means) 17.18 ... Spiral coil (rotational force applying means) (invention according to claim 2) 13a, 14a ... Rotating shaft 13b + 14b ... Cylindrical shaft 27.28 ... Belt (rotational force transmission means) 13 Fig. 4 Fig. 5 Stroke Fig. 6 Film tension T (kg) 1 Fig. 7 11 .12

Claims (1)

[Claims] 1) A duct for guiding blown air into the vehicle interior, a heater disposed within the duct, and a ratio of air passing through the heater to air bypassing the heater. A temperature control means that adjusts the temperature of the blown air by adjusting the temperature, a plurality of outlets for blowing out the temperature-adjusted blown air to various locations in the vehicle interior, and an outlet switch that selects and opens these outlets. In the vehicle air conditioner comprising: (a) one winding shaft and the other winding shaft rotatably supported; (b) It has an opening for passing the blown air, both ends are fixed to the one winding shaft and the other winding shaft, and the one winding shaft and the other winding shaft rotate. (c) a film-like damper that adjusts the temperature of the blown air or switches the respective air outlets by displacing the position of the opening in accordance with the change in temperature; (c) a drive means that rotationally drives the one winding shaft; (d) a rotational force applying means for always applying a rotational force smaller than the rotational force of the driving means to the other winding shaft in the direction of winding up the film-like damper; Air conditioner. 2) The temperature adjustment means or the air outlet switching means includes (a) one winding shaft and the other winding shaft that are rotatably supported, and (b) an opening for passing the blown air. wherein both ends are fixed to the one winding shaft and the other winding shaft, and the position of the opening is displaced as the one winding shaft and the other winding shaft rotate. (c) a drive means for rotationally driving the one winding shaft; (d) one winding shaft; and a rotational force transmitting means for connecting the other winding shaft and transmitting the rotational force applied to the one winding shaft to the other winding shaft, the one winding shaft or The other winding shaft is rotatably supported and has a rotary shaft engaged with the rotational force transmitting means, and a cage rotatable with respect to the rotary shaft on the outer periphery of the rotary shaft. a cylindrical shaft fitted into the film-like damper and having an end fixed thereto, and between the rotary shaft and the cylindrical shaft, the cylindrical shaft is fitted in the film-like An air conditioner for a vehicle, comprising: a rotational force applying means that constantly applies a rotational force smaller than the rotational force of the driving means to the cylindrical shaft so as to rotate the damper in a winding direction.