JP2013087981A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner which is configured to cause no slide between (a support shaft of) a vertical-blowing-direction changing blade and a rotation shaft, and which performs air flow control by rotating upper and lower blades by using a driving part.SOLUTION: A support shaft 13 on a free end side of an upper blade 5a includes a rugged shape, and inserted into the rotation shaft which includes a rugged shape as well and then mounted with the energizing means, so that the rotation shaft and vertical-blowing-direction changing blade are securely fitted to each other and no slide is caused between the support shaft and rotation shaft for the vertical-blowing-direction changing blade, thereby securely rotating the upper and lower blades by the driving part.

Description

  The present invention relates to an air conditioner provided with an urging means.

  Conventionally, a wind direction changing blade of an air conditioner holds only one of the support shafts by a rotation driving unit, and the other support shaft is rotated and held. As a result, when the rigidity of the blade is weak, there is a drawback that deflection (twist) due to its own weight is likely to occur on the left and right.

  Therefore, in order to prevent the deflection, there has been proposed one having an elastic body that applies an urging force to the support shaft of the wind direction changing blade to rotate in the direction in which the outlet is closed (see, for example, Patent Document 1).

JP-A-3-211352

  In the conventional urging means described above, since the urging means is directly attached to the wind direction changing blade, it is necessary to remove the urging means when the blade is removed at the time of service.

  The present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide an air conditioner that enables attachment and removal of wind direction change blades without removing the biasing means. .

  In order to achieve the above-mentioned object, the present invention forms a concavo-convex portion on each of the rotating shaft to which the biasing means is attached and the wind direction changing blade inserted into the rotating shaft, and the rotating shaft is formed in the shaft hole portion formed in the main body. It is configured to fit both of them after being inserted.

  According to the present invention, it is not necessary to remove the urging means at the time of service correspondence such as replacement of the wind direction changing blade.

The front view of the indoor unit of the air conditioner which concerns on this invention 1 is a longitudinal sectional view of the indoor unit when the operation is stopped in FIG. 1 is a longitudinal sectional view of the indoor unit during operation of FIG. Enlarged view around the support shaft on the free end of the blades Up and down wind direction change during operation Enlarged view of the support shaft around the free end of the blade Enlarged view of main parts Figure inserted by bending the insertion part of the rotating shaft Figure with urging means attached to hook and rotating shaft Figure with the shaft of the upper blade inserted into the rotating shaft State diagram when measuring the biasing force of the biasing means using a jig Exploded view of rotating shaft and up / down wind direction change blade

  In the present invention, a rotating shaft that supports and rotates the support shaft of the vertical airflow direction changing blade formed in the left-right width direction is formed at both left and right ends, one support shaft is supported by the rotation drive unit, and the other support shaft is After the shaft is rotatably supported by the rotation shaft, the other support shaft is fixed to the rotation shaft and rotates together, and a shaft hole portion that rotatably holds the rotation shaft is formed in the main body.

  Specifically, the other support shaft and the rotation shaft are fitted to each other so as to form an uneven portion. These configurations not only improve the workability of assembling the vertical wind direction change blades to the air conditioner body, but also ensure that the rotating shaft and the vertical wind direction change blades fit together, and that the vertical air direction change blades are fitted from the air conditioner. It is not necessary to remove the urging means when it is removed. In addition, since no slip occurs between the support shaft and the rotation shaft of the up / down air direction changing blade, the rotation operation of the upper / lower blade by the driving unit can be performed reliably.

  Furthermore, the shape of the concavo-convex portions of one support shaft and the other support shaft of the up / down airflow direction changing blade is different.

  Thereby, the mistake of insertion of the up-and-down wind direction change blade | wing of the left-right width direction can be prevented. Further, the support shaft of the up / down air direction changing blade is inserted and fixed in the shaft hole of the rotation shaft.

  As a result, the insertion shape portion of the rotating shaft into the main body shaft hole portion does not bend inward, so the rotating shaft cannot be removed from the shaft hole unless the vertical airflow direction change blade is removed, and the air conditioner is operated. It is possible to prevent problems such as the rotation axis coming off.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  An air conditioner used in a general household is composed of an outdoor unit and an indoor unit that are usually connected to each other by refrigerant piping, and FIGS. 1 to 3 show the indoor unit of the air conditioner according to the present invention. ing.

  The indoor unit has a main body 1 and a movable front panel (hereinafter simply referred to as a front panel) 2 that can open and close the front opening of the main body 1. When the air conditioner is stopped, the front panel 2 is attached to the main body 1. While the front opening is closed in close contact, the front panel 2 moves in a direction away from the main body 1 to open the front opening 2a during operation of the air conditioner. 1 and 2 show a state where the front panel 2 closes the front opening 2a, and FIG. 3 shows a state where the front panel 2 opens the front opening 2a.

  As shown in FIGS. 1 to 3, a heat exchanger 3 that exchanges heat between indoor air taken from the front opening 2 a and the upper opening 2 b and heat exchange by the heat exchanger 3 are provided in the main body 1. An indoor fan 4 for transporting the air, and an up-and-down air direction change blade (hereinafter simply referred to as “up-and-down air direction”) that opens and closes an air outlet for blowing the air carried by the indoor fan 4 into the room and changes the air blowing direction up and down. 5) and left and right wind direction changing vanes (hereinafter simply referred to as "left and right vanes") 6 for changing the air blowing direction to the left and right, and the front opening 2a and the upper opening 2b and the heat exchanger 3 is provided with a filter for removing dust contained in room air taken from the front opening 2a and the upper opening 2b.

  Further, the upper part of the front panel 2 is connected to the upper part of the main body 1 via two arms 7 provided at both ends thereof, and drive control of a drive motor (not shown) connected to the arm 7 is performed. Thus, during operation of the air conditioner, the front panel 2 moves forward and obliquely upward from the position when the air conditioner is stopped (the closed position of the front opening 2a).

  Further, the upper and lower blades 5 are composed of an upper blade 5a and a lower blade 5b, and are respectively swingably attached to the lower portion of the main body 1. The upper blade 5a and the lower blade 5b are connected to separate driving sources (for example, stepping motors) at one of the rotation shafts, and are independently angle-controlled by a control device (for example, a microcomputer) built in the indoor unit. Is done.

  Here, the upper and lower blades 5 may be composed of three or more upper and lower blades. In this case, at least two (in particular, the uppermost blade and the lowermost blade) are independently angle-controlled. Preferably it is possible.

  A plurality of left and right blades 6 are arranged on the left and right sides of the center of the indoor unit, and are respectively attached to the lower portion of the main body 1 so as to be swingable. In addition, the left and right plurality of blades are connected to separate drive sources (for example, stepping motors) as a unit, and the left and right blades are independently angle-controlled by a control device built in the indoor unit. .

  4 and 5 are enlarged views of the periphery of the support shaft (the side not connected to the drive source by the rotation shaft) of the upper blade 5a that is rotatably supported. FIG. 4 shows a state when the air conditioner is stopped. FIG. 5 shows a state (an example) during operation of the air conditioner.

  As shown in FIGS. 4 and 5, the support shaft on the free end side of the upper blade 5 a is attached to a rotating shaft 11 inserted so as to contact the sliding portion of the main body (blowing grill) 9, and the rotating shaft 11, a biasing means 8 (for example, a coil spring) is mounted so as to be connected to a hook 12 of a main body (blowing grill) 9.

  Only one support shaft of the upper blade 5a is connected to the drive source, and the other support shaft is rotatably supported by the rotation shaft. As a result, the rotatable support shaft is opened by its own weight. The urging means 8 is mounted to prevent the upper blade 5a from being bent in the left-right direction, particularly when the upper blade 5a is long in the left-right width direction of the air conditioner, or This is very effective in preventing deflection when the rigidity of the upper blade 5a is low, such as when the curvature of the upper blade 5a is large.

  Here, the detailed shape of the rotating shaft 11 is demonstrated using FIG. α is a sliding surface of the rotating shaft 11 and is inserted into the shaft 13 of the blowing grill 9 in a state where the insertion shape portion γ is bent. β is a portion where the biasing means 8 is disposed, and further, by giving a notch shape to the end δ on the β side, a jig or the like for attaching a measuring device (for example, a torque gauge) is connected to the notch. Is possible. Accordingly, as shown in FIG. 7d, since the measuring device can be attached via the jig 14 after the urging means is incorporated, the urging force can be confirmed without removing the urging means. Further, υ is a portion for attaching one end of the urging means 8, and attaches a large R as much as possible to the corner portion so that the end portion is not damaged due to the elastic force of the urging means 8. Yes.

  Note that the measuring device may be directly inserted into the notch γ of the rotating shaft 11 without using the jig 14 for confirmation of the urging force. Further, the cut shape may not be the shape shown in FIG. 8 (for example, a + shape).

  Furthermore, since the rotating shaft 11 rotates in contact with the shaft hole portion 10 formed in the main body (blowing grill) 9 of the air conditioner, it is necessary to reduce the friction with the shaft hole portion 10. Further, since the elastic force of the biasing means 8 is always applied even when the operation is stopped, strength (rigidity) is also required. For this reason, the material is preferably polyacetal resin (POM).

  Here, an assembly method on the free end side of the upper blade 5a will be described.

  After inserting the rotating shaft 11 into the shaft hole portion 10 formed in the main body (blowing grill) 9 of the air conditioner with its insertion shape portion (υ in FIG. 6) bent (FIG. 7a), the main body ( The urging means 8 is attached to the hook 12 and the rotating shaft 11 present in the blowout grill) 9 (FIG. 7b), and finally the shaft 13 of the upper blade 5a is inserted into the rotating shaft 11 (FIGS. 7c and 8). In FIG. 8, the components other than the rotating shaft 11 and the upper blade 5a are omitted for easy understanding. By attaching the urging means 8 to the hook 12 existing on the rotary shaft 11 and the main body (blowing grill) 9, the urging means 8 is not affected even if the upper blade 5a is removed for service or the like. Sexual deterioration does not occur.

  In addition, after attaching the urging means 8 to the hook 12 and the rotating shaft 11 of the main body (blowing grill) 9 (FIG. 7b), the urging force of the urging means 8 may be measured using a jig (FIG. 7d). .

  Here, as shown in FIG. 8, since the rotation shaft 11 and the shaft 13 of the upper blade 5a are formed with uneven shapes, they can be attached only at a fixed angle in the rotation direction. . Furthermore, the uneven shape of the upper blade 5a is different from the uneven shape for pivotally supporting the rotational drive unit. In addition, since the shaft 13 of the upper blade 5a enters the rotary shaft 11, the insertion shape portion ([delta] in FIG. 6) of the rotary shaft 11 is not bent inward, so that it is always caught by the sliding portion 10. The rotating shaft 11 does not come off the sliding portion 10 unless the upper blade 5a is removed.

  Note that the above assembly order is an example, and the urging means 8 may be attached after the upper blade 5 is attached, and the urging force may be measured last (after the upper blade 5 is attached).

  Since the air conditioner according to the present invention can prevent deflection by the urging means, it is useful as various air conditioners including an air conditioner used in a general household.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Front panel 3 Heat exchanger 4 Indoor fan 5 Up-and-down air direction change blade 6 Left and right air direction change blade 7 Arm 8 Energizing means 9 Outlet grill 10 Shaft hole part 11 Rotating shaft 12 Hook 13 Shaft 14 Jig

Claims (4)

It is formed in the left-right width direction, supports the support shaft of the up / down air direction change blade that can change the wind direction in the up / down direction, and the rotation shaft that rotates the up / down air direction change blade is formed at the left and right ends, and one support shaft is In an air conditioner that is pivotally supported by a rotation drive unit and the other support shaft is rotatably supported by the rotation shaft, the other support shaft is fixed to the rotation shaft and rotates together. An air conditioner characterized in that a shaft hole portion that is rotatably held is formed in a main body. 2. The air conditioner according to claim 1, wherein the other support shaft and the rotation shaft are fitted to each other with an uneven portion formed therein. 2. The air conditioner according to claim 1, wherein the shape of the concavo-convex portions of one support shaft and the other support shaft of the up / down airflow direction changing blade is different. The air conditioner according to any one of claims 1 to 3, wherein the other support shaft is inserted and fixed in a shaft hole of the rotating shaft.