JP2013087980A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner that prevents a blowing-direction changing blade from bending by its own weight by means of an energizing means, and does no increase in trouble to cope with service.SOLUTION: A support shaft on a free end side of an upper blade 5a is fitted to a rotation shaft 11 inserted in a shaft hole part 10 of a body 9 to come in contact with the shaft hole part 10, and energizing means 8 is coupled to a hook 12 of the body 9 for the rotation shaft 11, so that work efficiency of assembling a vertical-blowing-direction changing blade into the air conditioner body is improved and the energizing means need not be removed from the air conditioner body even when the vertical-blowing-direction changing blade is removed.

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.

  Furthermore, when it becomes necessary to measure the urging force after the urging means is attached to the main body, there is a disadvantage that the urging means must be removed once.

  The present invention has been made in view of the above-described problems of the prior art, and enables the wind direction changing blades to be attached without removing the urging means, and the urging force even when the urging means is mounted. It aims at providing the air conditioner which enables the measurement of this.

  In order to achieve the above object, the present invention is configured such that an urging means is attached to a rotating shaft having a notch at an end, and a wind direction changing blade is attached to the rotating shaft.

  According to the present invention, it is possible to measure the urging force without attaching the urging means at the time of service such as replacement of the wind direction changing blade and further attaching the urging means.

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 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 The other support shaft is provided with urging means that rotates together with the rotation shaft and applies an urging force to the rotation shaft.

  Specifically, a shaft hole portion that holds the rotating shaft is formed on the main body side, the rotating shaft is in contact with the shaft hole portion and can be rotated, and an insertion shape portion that is held in the shaft hole portion. The insertion shape portion is bent and inserted into the shaft hole portion, and the sliding portion is rotatable in the shaft hole.

  These configurations not only improve the workability of assembling the up-and-down air direction changing blades to the air conditioner body, but also eliminate the need to remove the urging means from the air-conditioner body when the up-and-down air direction changing blades are removed.

  Furthermore, a notch part which has an urging means on the outer periphery of the rotating shaft and can be connected to a measuring device for measuring the urging force of the urging means is formed on the side opposite to the sliding part.

  As a result, the urging force can be measured in a state where the urging means is attached to the main body, so that the urging force can be confirmed on the assembly line of the factory, leading to quality maintenance.

  The rotating shaft is made of polyacetal resin. This not only reduces the possibility of breakage of the rotating shaft due to the elastic force of the biasing means, but also makes the rotation with the shaft hole portion smooth.

  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 the rotation drive unit and the other support shaft is rotatably supported by the rotation shaft, the other support shaft rotates together with the rotation shaft, and an urging force is applied to the rotation shaft. Air conditioner with means. A shaft hole portion for holding the rotation shaft is formed on the main body side, the rotation shaft is in contact with the shaft hole portion and can be rotated, and an insertion shape portion held in the shaft hole portion. 2. The air conditioner according to claim 1, wherein the insertion shape portion is bent and inserted into the shaft hole portion, and the sliding portion is rotatable in the shaft hole. A notch part which has a biasing means on the outer periphery of the rotating shaft and which can be connected to a measuring device for measuring the biasing force of the biasing means is formed on the opposite side of the sliding part. Item 1. An air conditioner according to item 1 or 2. The air conditioner according to any one of claims 1 to 3, wherein the rotating shaft is made of polyacetal resin.