JP5686124B2 - Air conditioning indoor unit - Google Patents

Description

  The present invention relates to an air conditioning indoor unit.

  As an air-conditioning indoor unit, one having a casing, a heat exchanger and a fan housed in the casing is known. The air sucked into the casing passes through the heat exchanger, and is then blown out from the outlet formed in the lower part of the casing. Here, the flap is arrange | positioned along the longitudinal direction at the blower outlet, and the wind direction of the air which blows off from a blower outlet can be changed by rotating a flap (patent document 1 etc.).

  A shaft is disposed behind the flap in the casing, and the flap is connected to the shaft by an arm. And when the motor arrange | positioned at the longitudinal direction one end side of a shaft drives, a shaft rotates, and a flap rotates in connection with this.

JP 2008-39252 A

  By the way, the driving force of the motor is easily transmitted to the one end side of the shaft close to the motor with respect to the shaft, but is not easily transmitted to the other end side of the shaft far from the motor. Therefore, the amount of rotation is less at the other end side (the side farther from the motor) of the shaft than at one end side (the side closer to the motor), and the shaft is twisted. As a result, when the flap is closed, one end side of the flap (side closer to the motor) is closed, but the other end side of the flap (side far from the motor) is not completely closed, and is separated from the casing. . In this state, a gap is generated between the other end of the flap and the casing, which is not preferable in appearance.

  Therefore, an object of the present invention is to provide an air-conditioning indoor unit in which a gap is unlikely to be generated between the flap and the casing when the flap is closed.

An air conditioning indoor unit according to a first aspect of the present invention is a casing having an outlet, a first flap that is arranged along the longitudinal direction of the outlet, and that adjusts the air direction, and is arranged at one end in the longitudinal direction of the first flap. A drive unit, a shaft that is disposed along the longitudinal direction of the first flap, and that is rotationally driven by the drive unit, and a plurality of shafts that are disposed along the longitudinal direction of the first flap, the shaft and the first flap A plurality of connecting members for connecting to the rear end of the flap, and the plurality of connecting members are disposed on the shaft so as to be displaced in a rotational direction during the closing operation of the first flap as the distance from the driving unit increases. mounted and, especially the during closing operation of the first flap, the far end to the driving portion of the first flap is in contact with the casing before the close the other end to the drive unit To.

In this air conditioning indoor unit, the plurality of connecting members that connect the first flap and the shaft are displaced in the rotational direction during the closing operation of the first flap as they move away from the drive unit. As the distance from the drive section increases, the position is closer to the casing. Thus, when the first flap is closed, the shaft is twisted, so that the other end of the first flap is closed in the closed state even if the rotation amount on the other end side (the side far from the drive unit) of the first flap is reduced. The side is closed like the one end side. Therefore, in the state which closed the 1st flap, it can be made hard to produce a clearance gap between the front-end | tip part of a 1st flap, and a casing.
In this air conditioner indoor unit, the first flap has its other end side (side far from the drive unit) in contact with the casing earlier than one end side (side closer to the drive unit) during the closing operation of the first flap. In the closed state of the flap, it is possible to reliably prevent a gap from being generated between the tip of the first flap and the casing.

  The air conditioner indoor unit according to a second aspect of the present invention is the air conditioner indoor unit according to the first aspect, wherein the tip end portion of the first flap is in contact with the casing in the entire longitudinal direction of the outlet in the closed state of the first flap.

  In this air conditioner indoor unit, in the closed state of the first flap, the front end portion of the first flap and the casing are in contact with each other in the entire longitudinal direction, so that there is almost no gap between the front end portion of the first flap and the casing. Therefore, the appearance is preferable.

The air conditioning indoor unit pertaining to a third aspect of the invention is the first or second aspect of the invention, wherein the plurality of connecting members are arranged so as to be shifted from 3 ° to less than 5 ° at 300 mm in the longitudinal direction of the first flap. .

  In this air conditioning indoor unit, by changing the inclination angle at a predetermined interval, it is possible to reliably prevent a gap from being generated between the front end of the first flap and the casing in the closed state of the first flap.

Air conditioning indoor unit pertaining to the fourth invention, in the first to third invention, further comprising a second flap for opening and closing said outlet, said first flap closes the upper portion of the air outlet, said second flap Closes the lower part of the outlet.

  In this air conditioning indoor unit, the first flap that closes the upper part of the outlet is arranged away from the casing, so that the first flap can be easily rotated.

  As described above, according to the present invention, the following effects can be obtained.

In the first invention, the plurality of connecting members that connect the first flap and the shaft are displaced in the rotational direction during the closing operation of the first flap as they are separated from the drive unit. As the distance from the drive section increases, the position is closer to the casing. Thereby, in the closed state of the 1st flap, it can be made hard to produce a crevice between the tip part of the 1st flap, and the casing.
In the first invention, during the closing operation of the first flap, the other end side (the side farther from the drive unit) of the first flap contacts the casing before the one end side (the side closer to the drive unit). In the closed state of the flap, it is possible to reliably prevent a gap from being generated between the tip of the first flap and the casing.

  In the second invention, in the closed state of the first flap, the front end portion of the first flap and the casing are in contact with each other in the entire longitudinal direction, so that there is almost no gap between the front end portion of the first flap and the casing. Therefore, the appearance is preferable.

In the third aspect , by changing the inclination angle at a predetermined interval, it is possible to reliably prevent a gap from being generated between the front end of the first flap and the casing in the closed state of the first flap.

In 4th invention, the 1st flap which closes the upper part of a blower outlet is arrange | positioned away from a casing, and it can make it easy to rotate a 1st flap.

It is a perspective view of an air-conditioning indoor unit concerning an embodiment of the present invention. It is sectional drawing of an air-conditioning indoor unit, and is a figure along the II-II line | wire of FIG. It is a perspective view which shows the periphery of a 1st flap and a drive part. It is a perspective view which shows the state with which the 1st flap and the shaft were connected by the arm. It is a perspective view of a shaft. (A)-(c) is a perspective view of an arm. It is a side view which shows the state with which the 1st flap and the shaft were connected by the arm. It is a schematic perspective view which shows the closing operation of a 1st flap in order.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

[Overall configuration of air conditioning indoor unit]
As shown in FIGS. 1 and 2, the air conditioning indoor unit 100 is a wall-hanging type main body casing 10 having a substantially rectangular parallelepiped shape, a heat exchanger 20 disposed inside the main body casing 10, an indoor fan 30, a filter 40, and And a bottom frame 50.

(Main body casing)
As shown in FIGS. 1 and 2, the main casing 10 includes a front grill 10a, a front panel 10b covering the front of the front grill 10a, and a mounting plate 10c disposed at the rear end of the front grill 10a. ing. The front panel 10b has an upper end rotatably supported by the front grill 10a, and can operate in a hinged manner.

  A suction port 11 is formed in the upper part of the main body casing 10, and an air outlet 12 is formed in the lower part. A first flap 13 and a second flap 14 are arranged in order from the front in the air outlet 12, and the wind direction of the air blown out from the air outlet 12 can be adjusted in the vertical direction by these two flaps. Moreover, the 1st flap 13 and the 2nd flap 14 are shape | molded with resin. 1 and 2 show a state in which the first flap 13 and the second flap 14 are opened.

  As shown in FIG. 1, the first flap 13 is disposed slightly away from the main body casing 10 and supported by the main body casing 10 via arms (connection members) 61, 62, 63. As shown in FIGS. 1 and 2, the arms 61, 62, 63 are connected at one end to the rear end of the first flap 13 and connected at the other end to a support part 70 disposed in the main body casing 10. (See FIG. 3). The support part 70 is arrange | positioned under the heat exchanger 20, as shown in FIG. The first flap 13 and the support part 70 will be described later.

  As shown in FIG. 1, the rear end of the second flap 14 is rotatably supported by the front grill 10 a, and rotates when the motor disposed at the right end in the main body casing 10 is driven.

(Configuration inside the body casing)
As shown in FIG. 2, a three-dimensional space is formed by the front grill 10a, the front panel 10b, and the bottom frame 50, and the heat exchanger 20, the indoor fan 30, and the filter 40 are disposed in the three-dimensional space.

  The heat exchanger 20 is formed in an inverted V shape in which both ends are bent downward in a side view, and is attached to the bottom frame 50. In the heat exchanger 20, heat exchange is performed with the air sucked from the suction port 11.

  The indoor fan 30 is disposed below the heat exchanger 20 and blows air taken in from the room against the heat exchanger 20 and then blows it into the room.

  The filter 40 is disposed between the front panel 10 b of the main body casing 10 and the heat exchanger 20, and removes dust contained in the air flowing toward the heat exchanger 20.

  Then, the air sucked from the suction port 11 at the top of the main body casing 10 passes through the filter 40, passes through the heat exchanger 20, and is blown out from the blower outlet 12.

  Next, the 1st flap 13 and the support part 70 are demonstrated in detail, referring FIGS. 3-8.

(First flap)
As shown in FIGS. 3 and 4, three protrusions 13 a, 13 b and 13 c are provided on the back surface 13 s of the first flap 13. The protrusions 13a, 13b, and 13c are provided at the right end, the center, and the left end of the first flap 13, respectively. Further, the protrusions 13a, 13b, and 13c are formed with holes penetrating in the left-right direction (see “hole 13d” shown in FIG. 4).

(Support part)
As shown in FIG. 3, the support portion 70 is an elongated member extending along the longitudinal direction (left-right direction) of the first flap 13, and the shaft 80 is rotatably attached to the front end portion. . As shown in FIGS. 3 and 4, the shaft 80 is disposed substantially parallel to the first flap 13 and is connected to the first flap 13 by three arms 61, 62, 63. As shown in FIG. 4, a gear 71 is attached to the right end of the shaft 80.

  As shown in FIG. 4, the arms 61, 62, and 63 are respectively attached to the right end, the center, and the left end at the rear end of the back surface 13 s of the first flap 13. Here, in the longitudinal direction of the first flap 13, the distance between the arm 61 and the arm 62 is 11 (= 300 mm), and the distance between the arm 62 and the arm 63 is 12 (= 300 mm). Therefore, the arm 61 and the arm 63 are separated from each other by l1 + l2 = 600 mm in the left-right direction. Here, the left-right direction is the longitudinal direction of the first flap 13.

  As shown in FIG. 3, a motor (driving unit) 72 and a plurality of gears (gears 73 </ b> A, 73 </ b> B, 73 </ b> C, etc. shown in FIG. 3) are arranged on the right rear side of the shaft 80. When the driving force of the motor (driving unit) 72 is transmitted to the shaft 80 via the gear, the shaft 80 rotates, and the first flap 13 rotates accordingly. A plurality of flaps 74 (74a, 74b, 74c...) Are arranged in the left-right direction at the rear end portion of the support portion 70. The flap 74 adjusts the air direction of the air blown out from the air outlet 12 shown in FIG. 2 in the left-right direction.

  Next, the configuration of the shaft 80 and the arms 61, 62, 63 will be described in detail.

<Shaft>
As shown in FIG. 5, the shaft 80 has a flat shape in which the upper surface 80u and the bottom surface 80b are flat when viewed from the axial direction, and the side surfaces 80f and 80r bulge outward.

<Arm>
As shown in FIGS. 6A to 6C, the arms 61, 62, and 63 are elongated members, and project at the lower end portion in a direction perpendicular to the longitudinal direction of the first flap 13. Protrusions 61a, 62a, 63a are provided. Further, insertion holes 61b, 62b, 63b through which the shaft 80 is inserted are formed at the upper ends of the arms 61, 62, 63.

  The protrusion 61 a of the arm 61 is provided on the back surface 61 r of the arm 61, and the protrusion 62 a of the arm 62 is provided on the back surface 62 r of the arm 62. On the other hand, the protrusion 63 a of the arm 63 is provided on the surface 63 f of the arm 63. As shown in FIG. 4, the protrusions 61 a, 62 a, and 63 a are fitted into holes of protrusions 13 a, 13 b, and 13 c provided on the back surface 13 s of the first flap 13. As a result, the arms 61, 62 and 63 are fixed to the first flap 13.

Further, as shown in FIGS. 6A to 6C, the insertion holes 61b, 62b, and 63b have substantially the same flat shape as the shaft 80, and are all shifted. Specifically, when the arms 61, 62, 63 are extended in the same direction, if the upper surface 61u of the insertion hole 61b is inclined counterclockwise by θ1 ° with respect to the horizontal direction, the upper surface of the insertion hole 62b. 62u is inclined counterclockwise by θ2 ° (= θ1 ° + 3 ° to less than 5 °) with respect to the horizontal direction. Further, the upper surface 63u of the insertion hole 63b is inclined counterclockwise by θ3 ° (= θ2 ° + 3 ° to less than 5 °) with respect to the horizontal direction. Thus, the insertion hole 62b is inclined counterclockwise by 3 ° or more and less than 5 ° with respect to the insertion hole 61b, and the insertion hole 63b is inclined counterclockwise by 3 ° or more and less than 5 ° with respect to the insertion hole 62b. doing. Moreover, since the above θ3 is expressed by the following formula using θ1,
θ3 ° = θ2 ° + 3 ° or more and less than 5 °
= (Θ1 ° + 3 ° or more and less than 5 °) + 3 ° or more and less than 5 °
= Θ1 ° + 6 ° or more and less than 10 ° The upper surface 63u of the insertion hole 63b is inclined counterclockwise by 6 ° or more and less than 10 ° with respect to the upper surface 61u of the insertion hole 61b. Therefore, the insertion hole 63b is inclined counterclockwise by 6 ° or more and less than 10 ° with respect to the insertion hole 61b.

  Since the insertion holes 61b, 62b, and 63b are all shifted from each other as described above, when the shaft 80 is inserted into the insertion holes 61b, 62b, and 63b, as shown in FIG. Are arranged offset in the clockwise direction. At this time, the arm 62 is inclined by θ11 ° (= 3 ° or more and less than 5 °) clockwise with respect to the shaft 61 with respect to the arm 61, and the arm 63 is rotated θ12 clockwise with respect to the shaft 80 about the shaft 80. It is inclined (= 3 ° or more and less than 5 °). Therefore, the arm 63 is inclined by θ11 ° + θ12 ° (= 6 ° or more and less than 10 °) clockwise around the shaft 80 with respect to the arm 61. Thus, in this embodiment, arms 61, 62, and 63 having different configurations are used.

  Here, since the shaft 80 rotates clockwise when the first flap 13 is closed, the arms 61, 62, and 63 are arranged in this order so as to be shifted in the rotation direction when the first flap 13 is closed. . And since the 1st flap 13 is attached to the arms 61, 62, and 63 which have been shifted, as shown in FIG. 4, the first flap 13 is inclined in the rotation direction during the closing operation as it approaches the left end. Accordingly, when the first flap 13 is attached to the main body casing 10 in this state (see FIG. 1), the first flap 13 is arranged closer to the main body casing 10 as it approaches the left end.

  Conventionally, since the arm having the same configuration is used as the plurality of arms connecting the first flap 13 and the shaft 80 (arm 61 of the present embodiment), as shown in FIG. When viewed from the axial direction, the plurality of arms were all arranged overlapping each other, and were not arranged shifted in the clockwise direction (the rotational direction when the first flap 13 was closed). Therefore, if the 1st flap 13 is attached to the main body casing 10 in this state, the 1st flap 13 will be arrange | positioned by the substantially same distance as the main body casing 10 in any position about a longitudinal direction.

  Next, the process at the time of the closing operation of the first flap 13 will be described with reference to FIG.

  From the above-described configuration, in the present embodiment, as shown in FIG. 8A, the first flap 13 is arranged at a position close to the main body casing 10 in the order of the left end portion 13l, the center portion 13m, and the right end portion 13r. . For this reason, even if the shaft 80 is twisted during the closing operation of the first flap 13, the left end portion 13l of the first flap 13 first contacts the main body casing 10, and then the central portion 13m of the first flap 13 is the main body. It contacts the casing 10 (FIG. 8B). Finally, the right end portion 13r of the first flap 13 contacts the main body casing 10 (FIG. 8C), and in the closed state, the front end portion of the first flap 13 contacts the main body casing 10 in the entire longitudinal direction. .

  Conventionally, in the opened state of the first flap 13, the first flap 13 is arranged to be the same distance as the main body casing 10 in the entire longitudinal direction. Therefore, if the shaft 80 is twisted during the closing operation of the first flap 13, the left end portion and the center portion of the first flap 13 do not contact the main body casing 10 in the closed state. There was a gap between them, and the appearance was unfavorable. However, in the present embodiment, as described above, since the arms 61, 62, and 63 that connect the first flap 13 and the shaft 80 are arranged so as to be shifted, the above problem can be solved.

(Characteristics of air conditioning indoor unit of this embodiment)
The arms 61, 62, and 63 that connect the first flap 13 and the shaft 80 are attached to the first flap 13 while being displaced in the rotational direction during the closing operation of the first flap 13 as the distance from the motor 72 increases. Specifically, the arm 62 is shifted by 3 ° or more and less than 5 ° with respect to the arm 61, and the arm 63 is shifted by 6 ° or more and less than 5 ° with respect to the arm 61. As a result, the tip of the first flap 13 is disposed closer to the main body casing 10 as the distance from the motor 72 increases. Therefore, even when the amount of rotation on the left end side (the side far from the drive unit) of the first flap 13 decreases due to the shaft 80 being twisted during the closing operation of the first flap 13, in the closed state of the first flap 13. The left end side of the first flap 13 is closed in the same manner as the right end side. Therefore, in a state where the first flap 13 is closed, a gap is hardly generated between the front end portion of the first flap 13 and the main body casing 10.

  Further, in the closed state of the first flap 13, the front end portion of the first flap 13 and the main body casing 10 are in contact with each other in the entire longitudinal direction, so that there is almost no gap between the front end portion of the first flap 13 and the main body casing 10. Does not occur. Therefore, the appearance is preferable.

  Further, when the first flap 13 is closed, the first flap 13 comes into contact with the main casing 10 in the order of the left end portion (side far from the driving portion) 13l, the central portion 13m, and the right end portion (side closer to the driving portion) 13r. In the closed state of the first flap 13, it is possible to reliably prevent a gap from being generated between the front end of the first flap 13 and the main body casing 10.

  In addition, by changing the angle of inclination of the arms 61, 62, and 63 at an interval of 300 mm between 3 ° and less than 5 °, the first flap 13 is closed between the front end of the first flap 13 and the main body casing 10 in the closed state. It is possible to reliably prevent the gap from occurring.

  Moreover, in this embodiment, the 1st flap 13 and the 2nd flap 14 are arrange | positioned in the blower outlet 12, and the 1st flap 13 arrange | positioned at the upper side is arrange | positioned a little away from the main body casing 10. FIG. Thereby, the 1st flap 13 can be made easy to rotate.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the present embodiment, the first flap 13 is in contact with the main body casing 10 when the first flap 13 is closed, but the first flap 13 is in contact with the main body casing 10 when the first flap 13 is closed. You don't have to. For example, the structure by which the outer surface of the 1st flap 13 and the outer surface of the main body casing 10 are arrange | positioned on the substantially same plane in a closed state may be sufficient.

  In the above-described embodiment, when the first flap 13 is closed, the first flap 13 includes the left end portion (side far from the drive unit) 13l, the center portion 13m, and the right end portion (side close to the drive unit) 13r in this order. Although it contacts the main body casing 10, it does not need to contact the main body casing 10 in this order. For example, when the first flap 13 is closed, the left end portion, the center portion, and the right end portion of the first flap 13 may simultaneously contact the main casing 10.

  Furthermore, in the above-described embodiment, the arms 61, 62, and 63 are spaced apart by 300 mm, and the arms 61, 62, and 63 are shifted by 3 ° or more and less than 5 ° in the rotation direction when the first flap 13 is closed. However, the distance and angle between the arms are not limited to the above values. For example, a plurality of arms may be arranged every 100 mm in the longitudinal direction of the first flap. In this case, each arm may be shifted in the rotation direction during the closing operation of the first flap 13 as it moves away from the motor, or may be shifted in the rotation direction during the closing operation of the first flap 13 every 300 mm away. . Further, a plurality of arms may be arranged at intervals of 400 mm in the longitudinal direction of the first flap. In this case, each arm may be shifted in the rotation direction during the closing operation of the first flap 13 as it moves away from the motor, or may be shifted in the rotation direction during the closing operation of the first flap 13 every 300 mm away. .

  In addition, the configuration of the arms, the number and positions of the arms are not limited to those shown in the present embodiment, and can be changed.

  Moreover, in the above-mentioned embodiment, although two flaps (the 1st flap 13 and the 2nd flap 14) were arrange | positioned at the blower outlet 12, you may arrange | position only the 1st flap 13 in the blower outlet 12. FIG.

  If the present invention is used, it is possible to provide a configuration in which a gap is hardly generated between the flap and the casing in a state where the flap disposed at the outlet is closed, which is useful for an air conditioning indoor unit.

DESCRIPTION OF SYMBOLS 10 Main body casing 12 Air outlet 13 1st flap 13r Right end part 13m Center part 13l Left end part 14 2nd flap 61,62,63,161,162,163 Arm (connection member)
61A, 62A, 63A Flap fixing part 61B, 62B, 63B Shaft fixing part 61b, 62b, 63b Insertion hole 61C, 62C, 63C Connecting part 72 Motor (driving part)
80 Shaft 100 Air conditioning indoor unit

Claims (4)

A casing having an air outlet;
A first flap that is arranged along the longitudinal direction of the outlet and adjusts the wind direction;
A drive unit disposed at one longitudinal end of the first flap;
A shaft disposed along the longitudinal direction of the first flap and driven to rotate by the driving unit;
A plurality of connection members arranged along the longitudinal direction of the first flap, and connecting the shaft and the rear end of the first flap;
The plurality of connecting members are attached to the shaft so as to be displaced in the rotational direction during the closing operation of the first flap as the distance from the driving unit increases .
An air-conditioning indoor unit wherein one end of the first flap far from the drive unit contacts the casing before the other end near the drive during the closing operation of the first flap .   2. The air conditioning indoor unit according to claim 1, wherein in a closed state of the first flap, a tip end portion of the first flap is in contact with the casing in the entire longitudinal direction of the air outlet. The air conditioning indoor unit according to claim 1 or 2 , wherein the plurality of connecting members are arranged so as to be shifted by 3 mm or more and less than 5 degrees at 300 mm in the longitudinal direction of the first flap. A second flap for opening and closing the air outlet;
The first flap closes the top of the outlet;
The air conditioning indoor unit according to any one of claims 1 to 3 , wherein the second flap closes a lower portion of the outlet.

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