JP3653634B2 - Shutter drive device for indoor unit of packaged air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shutter drive device for an indoor unit of a packaged air conditioner. More specifically, the present invention relates to a lifter that raises and lowers a shutter while moving up and down by an operating force of a drive motor transmitted through a drive roller, and the vertical movement of the lifter. By arranging a plurality of guide rollers between the lifting guide that guides the friction, the contact form between the lifter and the lifting guide is changed from surface contact to line contact to reduce frictional force and noise caused by it. The present invention relates to a shutter drive device for an indoor unit of a packaged air conditioner that can reduce drive torque.
[0002]
[Prior art]
In general, an air conditioner supplies cold air to a sealed room space such as an office room, living room, or inside a building in the summer when the weather is hot and humid, and maintains a temperature suitable for the activity. Basic.
[0003]
Such an air conditioner can be distinguished into an integrated type and a separated type according to the arrangement of the compressor, the condenser and the evaporator. Among these, a window type air conditioner is a typical example of an integrated air conditioner in which a compressor, a condenser, and an evaporator are provided in one case. On the other hand, the separation type air conditioner is configured by being separated into an outdoor unit composed of a compressor and a condenser, and an indoor unit composed of an expansion valve and an evaporator. There are two types of separation type air conditioners: a wall-mounted type air conditioner that attaches an indoor unit to a wall surface, and a package type air conditioner in which the indoor unit is erected on the floor.
[0004]
The present invention discloses a package type air conditioner in which an indoor unit is erected on the floor surface among the separate type air conditioners. Usually, a package type air conditioner is composed of an indoor unit and an outdoor unit, and an expansion valve and an evaporator are provided in the indoor unit. In this indoor unit, the indoor air sucked by the blower passes through the periphery of the evaporator and is cooled through heat exchange with the refrigerant flowing in the pipe of the evaporator, and then supplied to the room again. Cool the air. On the other hand, a compressor that compresses the refrigerant and a condenser that cools the compressed refrigerant are provided in the outdoor unit.
[0005]
FIG. 1 is a perspective view showing an indoor unit of a general package type air conditioner.
As described above, in the indoor unit of the package type air conditioner, the air discharge port 15 for discharging cool air into the room is formed in the upper part of the front surface, and the air discharge port 15 is used for adjusting the direction of the discharge air. The plurality of blades 20 are provided so as to be rotatable up and down.
[0006]
Recently, when the air conditioner is not used, a shutter 10 may be provided at the air discharge port 15 in order to prevent foreign substances from flowing into the indoor unit through the air discharge port 15. The shutter 10 is attached to the air discharge port 15 so as to be movable up and down.
[0007]
FIG. 2 is a side sectional view showing the configuration of such a shutter, FIG. 3 is a front sectional view showing a shutter driving device for a conventional indoor unit of a packaged air conditioner, and FIG. 4 is an enlarged view of portion E in FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG.
[0008]
As shown in these drawings, a plurality of blades 20 for adjusting the direction of the cool air discharged into the room are rotatably provided in the air discharge port 15 formed in the upper front surface of the indoor unit. ing. In addition, a shutter 10 for preventing foreign substances from flowing into the indoor unit through the air discharge port 15 when the air conditioner is not used is mounted in front of the blade 20 so as to be movable up and down.
[0009]
In order to move the shutter 10 up and down, a drive motor 40 that is operated by electricity supplied from the outside is provided, and a drive roller 45 is rotatably mounted on the drive motor 40. The driving roller 45 is supported by the driving roller support member 50 so as to be rotated at a fixed position. The drive roller 45 is in operative contact with the lifter 30.
[0010]
A plurality of anti-slip ridges 35 for preventing slipping are formed on one side surface of the lifter 30 that abuts the drive roller 45. The upper stage of the lifter 30 is connected to the shutter 10 via the connecting rod 25, and the lower stage is connected to the lifting guide 55. A plurality of separation preventing pieces 60 are formed on the guide plate 70 to guide the movement in the vertical direction while preventing the lifter 30 from separating.
[0011]
Further, since the upper stage of the connecting rod 25 is connected to the rear face of the shutter 10 and the lower stage is connected to the upper stage of the lifter 30, the lifter 30 is moved up and down by the operating force of the drive motor 40 transmitted via the drive roller 45. To move on. At this time, the up-and-down movement of the lifter 30 is transmitted to the shutter 10 via the connecting rod 25 to open and close it up and down.
[0012]
That is, when electricity is supplied to the drive motor 40, the drive roller 45 supported by the drive roller support member 50 rotates while the drive motor 40 rotates. As the drive roller 45 rotates, the lifter 30 in contact with the drive roller 45 rises or falls, and the vertical movement of the lifter 30 is transmitted to the shutter 10 via the connecting rod 25. As a result, it is possible to open and close the air discharge port 15 formed in the upper front portion of the indoor unit in accordance with the operating state of the air conditioner.
[0013]
However, in the conventional shutter driving device, the driving roller 45 transmits power in a state of being biased and abutted to prevent mutual sliding with the lifter 30, so that the outer wall of the lifting guide 55 and the inner wall of the lifter 30 are When the lifter 30 is driven in a surface contact state between the two, wear and noise occur, and there is a problem that a load applied to the drive motor 40 increases against the above-described friction.
[0014]
[Problems to be solved by the invention]
Therefore, the object of the present invention is to change the surface contact method between the inner wall surface of the lifter that lifts and lowers the shutter while receiving the guide of the lifting guide and the outer wall surface of the lifting guide to the line contact method using a plurality of guide rollers. To provide a shutter drive device for an indoor unit of a packaged air conditioner that can reduce the noise generated by reducing the frictional force between the lifter and the lifting guide and reduce the load applied to the drive motor. It is in.
[0015]
[Means for Solving the Problems]
In order to achieve the above-described object, a shutter drive device for an indoor unit of a packaged air conditioner according to the present invention includes a lifter that moves up and down by the rotational force of a drive roller while receiving a guide from a lifting guide protruding from a guide plate. In the shutter drive device of the indoor unit of the packaged air conditioner that opens and closes the shutter via the lifting guide, the lifting guide includes friction reducing means for reducing the friction between the outer wall surface of the lifting guide and the inner wall surface of the lifter It is characterized by that.
[0016]
The friction reducing means includes a plurality of cylindrical roller receiving portions formed in the lifting guide, a guide roller inserted into the roller receiving portion and in line contact with the inner wall surface of the lifter, and the guide roller The roller shaft has a pin hole extending through one end and penetrating through a shaft hole formed in the lifting guide, and a fixed pin inserted into the pin hole of the roller shaft.
[0017]
Further, the guide roller is preferably formed of an ABS (acrylonitrile butadiene styrene) material.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Moreover, in this Embodiment, the same code | symbol and name are used for the part same as the conventional structure, and description of an overlapping part is abbreviate | omitted.
[0019]
FIG. 6 is a front view showing a shutter drive device for an indoor unit of a packaged air conditioner according to the present invention, FIG. 7 is a cross-sectional view taken along the line BB of FIG. 6, and FIG. It is a perspective view which shows the shutter drive device of a machine.
[0020]
As shown in these drawings, the shutter drive device for an indoor unit of a packaged air conditioner according to the present invention includes a drive motor 40 that is operated by electricity from the outside, a drive roller 45 that is rotated by the drive motor 40, and this drive roller. A drive roller support member 50 that rotatably supports 45, a lifter 30 that moves up and down as the drive roller 45 rotates, and a connecting rod 25 that transmits the vertical movement of the lifter 30 to the shutter 10 are included. As in the conventional art, the guide plate 70 includes a plurality of separation preventing pieces 60 for guiding the vertical movement of the lifter 30 and the lifting guide 55.
[0021]
As described above, when the drive roller 45 is rotated by energization of the drive motor 40, the lifter 30 in contact with the drive roller 45 moves up and down so that the shutter 10 is raised or lowered via the connecting rod 25. become.
[0022]
Here, the gist of the configuration of the present invention is that the contact method between the inner wall surface of the lifter 30 and the outer wall surface of the lifting guide 55 that moves the shutter 10 linearly while receiving the guidance of the lifting guide 55 is surface contact. Therefore, a friction reducing means F including a plurality of guide rollers 65 is disclosed.
[0023]
The friction reducing means F of the present invention includes a plurality of cylindrical roller receiving portions 95 formed in the lifting guide 55 and a guide that is rotatably inserted in the roller receiving portion 95 and makes linear contact with the inner wall surface of the lifter 30. A roller 65, extending to one end of the guide roller 65, penetrating through a shaft hole 90 formed in the lifting guide 55 and having a pin hole 80, and a pin hole 80 of the roller shaft 75 And a fixing pin 85 to be inserted into the housing.
[0024]
At this time, it is more preferable that the guide roller 65 is formed of a thermoplastic resin ABS (acrylonitrile butadiene styrene) material. ABS is generally produced by mixing a mixed polymer of acrylonitrile and butadiene and a mixed polymer of styrene and butadiene, and has excellent wear resistance and dimensional safety, as well as heat resistance and rigidity. .
[0025]
Hereinafter, the assembly process, operation, and effect of the shutter drive device for the indoor unit of the packaged air conditioner according to the present invention having the above-described configuration will be described in detail with reference to the accompanying drawings.
[0026]
First, in the process of inserting the guide roller 65 into the roller receiving portion 95, the roller shaft 75 of the guide roller 65 is inserted into the shaft hole 90 of the roller receiving portion 95. Next, a fixing pin 85 is inserted into the pin hole 80 of the roller shaft 75 on the back side of the guide plate 70, and the guide roller 65 is rotatably provided. Thereafter, the lifting guide 55 is brought into contact with the lifter 30.
[0027]
After the coupling as described above, when the driving roller 45 is rotated by the driving force of the driving motor 40, the lifter 30 that is in contact with the driving roller 45 moves up and down, and thereby via the connecting rod 25. The air discharge port 15 is opened and closed while the shutter 10 moves up and down.
[0028]
At this time, the lifter 30 moves up and down in a state where separation between the lifting guide 55 and the separation preventing piece 60 is prevented. In this process, the guide roller 65 changes the contact system between the lifter 30 and the lifting guide 55 from conventional surface contact to line contact. Therefore, the contact surface between the outer wall surface of the lifting guide 55 and the inner wall surface of the lifter 30 is greatly reduced by the guide roller 65, and noise caused by friction is reduced. In addition, since the load applied to the drive motor 40 to resist friction can be reduced, energy saving and motor capacity can be reduced.
[0029]
In the present embodiment, the example in which the guide roller is used as the friction reducing means of the present invention has been illustrated and described. It will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention. I will be.
[0030]
【The invention's effect】
As described above, according to the shutter drive device for an indoor unit of a packaged air conditioner according to the present invention, the surface contact between the inner wall surface of the lifter that raises and lowers the shutter while receiving the guide of the lifting guide and the outer wall surface of the lifting guide. Is changed to line contact by using a plurality of guide rollers, the friction between the lifter and the lifting guide and the noise caused thereby can be greatly reduced, and the load on the drive motor can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an indoor unit of a general package type air conditioner.
FIG. 2 is a side sectional view showing a shutter structure of an indoor unit of a general package type air conditioner.
FIG. 3 is a front sectional view showing a shutter driving device of an indoor unit of a conventional package type air conditioner.
FIG. 4 is an enlarged view of a portion E in FIG.
5 is a cross-sectional view taken along line AA in FIG.
FIG. 6 is a front sectional view showing a shutter driving device for an indoor unit of a packaged air conditioner according to the present invention.
7 is a cross-sectional view taken along line BB in FIG.
FIG. 8 is a perspective view showing a friction reducing structure of the shutter driving device of the indoor unit of the package type air conditioner according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Shutter 15 Air discharge port 20 Blade 25 Connecting rod 30 Lifter 35 Anti-slip protrusion 40 Drive motor 45 Drive roller 50 Drive roller support member 55 Lifting guide 60 Detachment prevention piece 65 Guide roller 70 Guide plate 75 Roller shaft 80 Pin hole 85 Fixing pin 90 Shaft hole 95 Roller receiving part
F Friction reduction means

Claims (3)

In a shutter drive device for an indoor unit of a package type air conditioner that opens and closes a shutter via a lifter that moves up and down by the rotational force of a drive roller while receiving guidance from a lifting guide protruding from a guide plate,
A shutter drive device for an indoor unit of a package type air conditioner, wherein the lifting guide includes friction reducing means for reducing friction between an outer wall surface of the lifting guide and an inner wall surface of the lifter. The friction reducing means includes a plurality of cylindrical roller receiving portions formed on a lifting guide;
A guide roller that is inserted into the roller receiving portion and makes line contact with the inner wall surface of the lifter;
A roller shaft extending to one end of the guide roller, penetrating through a shaft hole formed in the lifting guide, and having a pin hole;
A fixed pin inserted into the pin hole of the roller shaft;
The shutter drive device for an indoor unit of a package type air conditioner according to claim 1, characterized by comprising: The shutter driving device for an indoor unit of a package type air conditioner according to claim 2, wherein the guide roller is made of an ABS material.

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