Indoor unit

Abstract

To provide an indoor unit capable of easily attaching and detaching an arm to / from a casing and not degrading appearance in closing an inlet panel.SOLUTION: An indoor unit includes: a casing having a front surface, and a holder storage portion opened at the front surface and gradually recessed upward as going backward; an arm holder inserted into the holder storage portion from a front surface side and detachably fixed in the holder storage portion; an arm inserted to the holder storage portion from the front surface side and held by the arm holder at one end rotatably around an axis extending in a width direction of the casing; and an inlet panel fixed to the other end of the arm. The arm is rotatable around the axis between a close position where the inlet panel is disposed in a manner of being overlapped on the front surface of the casing and covers the opening of the holder storage portion and an open position for opening the front surface of the casing by the inlet panel moving forward and upward from the close position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an indoor unit. [Background technology]

[0002] For example, Patent Document 1 discloses a panel mounting structure for mounting a panel (inlet panel) to an opening in the casing of an indoor unit so that the panel can be opened and closed freely. In this panel mounting structure, a second arm, whose center of rotation is located outside the casing, slides relative to a first arm inside the casing, thereby opening and closing the inlet panel attached to the second arm.

[0003] This prevents the cutout (notch) required for the arm to move when the inlet panel is opened or closed from being exposed to the outside, and prevents the aesthetic appearance of the indoor unit from being marred when the inlet panel is closed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-260193 Summary of the Invention [Problem to be solved by the invention]

[0005] When assembling an indoor unit, a technique is desired that allows the arm on which the inlet panel is mounted to be easily attached to the casing, while when performing maintenance on the indoor unit, a technique is desired that allows the arm to be easily removed from the casing.

[0006] That is, there is a demand for an indoor unit in which the arms can be easily attached to and detached from the casing, and in which the aesthetic appearance is not marred when the inlet panel is closed.

[0007] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an indoor unit in which the arm can be easily attached and detached from the casing and the aesthetic appearance is not marred when the inlet panel is closed. [Means for solving the problem]

[0008] In order to solve the above problems, an indoor unit according to the present disclosure includes a casing having a front surface and a holder accommodating portion that opens on the front surface and is recessed upward toward the rear; an arm holder that is inserted into the holder accommodating portion from the front surface side and is detachably fixed within the holder accommodating portion; an arm that is inserted into the holder accommodating portion from the front surface side and has one end held by the arm holder so as to be rotatable about an axis extending in the width direction of the casing; and an inlet panel fixed to the other end of the arm, wherein the arm is rotatable about the axis between a closed position where the inlet panel is arranged to overlap the front surface of the casing and covers the opening of the holder accommodating portion, and an open position where the inlet panel moves forward and upward from the closed position to expose the front surface of the casing. and further includes a bolt that is attached to the casing from the front to fix the arm holder to the casing, and the holder accommodating portion has a holder support portion having a support surface that supports the arm holder from below, and a first engaging portion that extends above the support surface in a direction intersecting the direction in which the support surface extends and is flexible, and the arm holder has a holding portion that is placed on the support surface and holds the arm rotatably around the axis, a second engaging portion that extends integrally from the holding portion and is engageable with the first engaging portion when the holding portion is inserted into the holder accommodating portion, and a fixing portion that extends integrally from the holding portion and is fixed to the holder support portion by the bolt. [Effects of the Invention]

[0009] According to the present disclosure, it is possible to provide an indoor unit in which the arm can be easily attached to and detached from the casing and in which the aesthetic appearance is not impaired when the inlet panel is closed. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a schematic configuration of an indoor unit according to an embodiment of the present disclosure. [Figure 2] 10 is a diagram showing a state of a holder accommodating portion according to an embodiment of the present disclosure as viewed from the front side. FIG. [Figure 3] FIG. 3 is a partial cross-sectional view taken along line III-III in FIG. 2. [Figure 4] 1A and 1B illustrate an arm holder according to an embodiment of the present disclosure. [Figure 5] FIG. 10 illustrates a state in which the arm is in a closed position according to an embodiment of the present disclosure. [Figure 6] FIG. 10 illustrates an embodiment of the present disclosure in which the arm is in an open position. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an indoor unit according to an embodiment of the present disclosure will be described with reference to the drawings.

[0012] (indoor unit) The indoor unit is installed indoors and conditions the air inside the room by exchanging heat between the refrigerant and the outdoor unit installed outside the room. The indoor unit and the outdoor unit make up the air conditioning system.

[0013] As shown in FIG. 1, the indoor unit 100 includes a casing 1, a fan 2, a heat exchanger 3, a filter unit 4, a control unit 5, an arm holder 6, a bolt 7, an arm 8, and an inlet panel 9.

[0014] (Casing) The casing 1 is made up of multiple panels and is installed on a wall W inside a room. The casing 1 forms the outer shell of the indoor unit 100. The casing 1 defines an internal space for accommodating various devices and for circulating air within the room. The casing 1 has a back panel 10, a bottom panel 20, a top panel 30, a pair of side panels 40, a front panel 50, a connecting panel 70, and a flap 73.

[0015] The rear panel 10 is a panel that is fixed to a wall W inside a room via a mounting plate or the like (not shown). The rear panel 10 extends along the wall W and has a rear surface 11 that faces the wall W. In this embodiment, the direction in which the rear surface 11 of the rear panel 10 faces the wall W is referred to as the "installation direction Di." Therefore, the installation direction Di is a direction perpendicular to the wall W.

[0016] Of the two sides of the installation direction Di, the side facing away from the wall W is referred to as the "front side Dif," and the opposite side is referred to as the "rear side Dib." The rear surface 11 has a rectangular shape with its longitudinal direction parallel to the wall W in the horizontal direction when viewed from the front side Dif (front).

[0017] The bottom panel 20 is connected to the lower edge of the rear panel 10 and extends in a direction intersecting the wall surface W. In this embodiment, the bottom panel 20 extends horizontally and is integrally connected to the rear panel 10 so as to stand upright from the rear panel 10. The bottom panel 20 extends horizontally and has a bottom surface 21 facing downward. The bottom surface 21 extends in a direction perpendicular to the direction in which the rear panel 11 extends.

[0018] The top panel 30 is connected to the upper edge of the rear panel 10, which is opposite to the lower edge, and extends in a direction intersecting the wall surface W. In this embodiment, the top panel 30 extends horizontally and is integrally connected to the rear panel 10 so as to stand upright from the rear panel 10.

[0019] That is, the top panel 30 extends above the bottom panel 20 in a direction parallel to the direction in which the bottom panel 20 extends. The bottom panel 20 and the top panel 30 face each other at a distance from each other.

[0020] The top panel 30 extends horizontally and has a top surface 31 facing upward. The top surface 31 extends in a direction perpendicular to the direction in which the back surface 11 extends. In this embodiment, the edge (side) of the front side Dif of the top surface 31 is the front edge 1a of the casing 1. The front edge 1a is located at the uppermost position of the casing 1.

[0021] In this embodiment, the direction in which the bottom panel 20 and the top panel 30 face each other is referred to as the "vertical direction Dv." Of both sides of the vertical direction Dv, one side that faces the top panel 30 from the bottom panel 20 is simply referred to as the "upper side Dvu," and the other side is simply referred to as the "lower side Dvd." Therefore, the vertical direction Dv coincides with the direction of gravity.

[0022] In this embodiment, the bottom surface 21 of the bottom panel 20 has a rectangular shape with its longitudinal direction parallel to the wall surface W in the horizontal direction when viewed from the lower side Dvd (below). The top surface 31 of the top panel 30 in this embodiment has a rectangular shape with its longitudinal direction parallel to the wall surface W in the horizontal direction when viewed from the upper side Dvu (above).

[0023] The top panel 30 is formed with a plurality of air inlets 32 for drawing in indoor air. That is, the top panel 30 has a plurality of air inlets 32. The plurality of air inlets 32 are arranged at equal intervals in the horizontal direction. Each air inlet 32 ​​penetrates the top panel 30 in the up-down direction Dv. When viewed from the upper side Dvu, each air inlet 32 ​​has a rectangular shape (oblong shape).

[0024] The side panels 40 are panels that connect the longitudinally extending edges of the rear panel 10, bottom panel 20, and top panel 30. In this embodiment, the direction that coincides with this longitudinal direction is referred to as the "width direction Dw." Therefore, the width direction Dw is a direction perpendicular to both the installation direction Di and the up-down direction Dv.

[0025] Of the two sides in the width direction Dw, when looking at the rear panel 10 from the front side Dif so that the top panel 30, rear panel 10, and bottom panel 20 are lined up from the upper side Dvu, the right side will be simply referred to as "one side Dwr," and the opposite side will be simply referred to as "the other side Dwl."

[0026] One of the pair of side panels 40 connects the edges of one side Dwr of the back panel 10, the bottom panel 20, and the top panel 30, and has a side surface 41 facing the one side Dwr.

[0027] The other of the pair of side panels 40 connects the edges of the other side Dwl of the back panel 10, the bottom panel 20, and the top panel 30, and has a side surface 41 facing the other side Dwl.

[0028] Therefore, the pair of side panels 40 are arranged to sandwich the back panel 10, bottom panel 20, and top panel 30 in the width direction Dw. Each side surface 41 extends in a direction perpendicular to the directions in which the back surface 11, bottom surface 21, and top surface 31 extend.

[0029] The front panel 50 is disposed on the forward side Dif of the rear panel 10, and connects the edges of the forward sides Dif of the top panel 30 and the pair of side panels 40 together. The front panel 50 extends in parallel with the direction in which the rear panel 10 extends. The front panel 50 extends in a direction along the wall surface W, and has a front surface 51 facing the forward side Dif.

[0030] The front panel 50 is formed with a pair of front openings 53 and a pair of holder accommodating portions 52. That is, the front panel 50 has a pair of front openings 53 and a pair of holder accommodating portions 52. The pair of front openings 53 are arranged adjacent to each other in the width direction Dw. When viewed from the front side Dif, each of the front openings 53 has a rectangular shape with the width direction Dw as the longitudinal direction.

[0031] The pair of holder accommodating portions 52 are arranged in the width direction Dw. One of the pair of holder accommodating portions 52 is arranged on one side Dwr of the front opening 53 arranged on one side Dwr of a pair of front openings 53 adjacent to each other in the width direction Dw.

[0032] The other of the pair of holder accommodating sections 52 is arranged on the other side Dwl of the pair of front openings 53 adjacent to each other in the width direction Dw than the other of the pair of front openings 53 arranged on the other side Dwl. The detailed configuration of the holder accommodating sections 52 will be described later.

[0033] The connection panel 70 is positioned on the lower Dvd side of the front panel 50, and connects the edges of the front Dif sides of the bottom panel 20 and the pair of side panels 40, and the edges of the lower Dvd sides of the front panel 50 to each other.

[0034] The connection panel 70 has a connection surface 71 that forms a curved surface that faces the front side Dif as it moves from the edge of the front side Dif of the bottom panel 20 toward the edge of the lower side Dvd of the front panel 50.

[0035] The connection panel 70 is formed with an air outlet 72 for blowing out air sucked in through the air inlet 32 ​​of the top panel 30. That is, the connection panel 70 has the air outlet 72. When viewed from the front side Dif or the lower side Dvd, the air outlet 72 is formed in a rectangular shape with the width direction Dw as the longitudinal direction. In this embodiment, the air outlet 72 widens to follow the curvature of the connection surface 71.

[0036] The flap 73 is provided at the air outlet 72 of the connection panel 70 and redirects the direction of air blown out from the air outlet 72. The flap 73 is capable of transitioning from a state in which it covers the air outlet 72 from the front side Dif to a state in which it does not cover the air outlet 72.

[0037] The flap 73 is, for example, provided on the connection panel 70 and supported by a rotation shaft (not shown) centered on the rotation axis (not shown) extending in the width direction Dw so as to be rotatable about the rotation axis. The amount of rotation of the flap 73 is controlled, for example, based on an input signal input from the outside.

[0038] As described above, the elements constituting the casing 1 form a space for accommodating various devices and for circulating indoor air. For ease of explanation, in this embodiment, this space will be referred to as an "accommodation space R."

[0039] (fan) The fan 2 is a cross-flow fan that can introduce indoor air into the casing 1. The fan 2 extends in the width direction Dw within the accommodation space R. The fan 2 is held by the rear panel 10 so as to be rotatable about a rotation axis (not shown) that extends in the width direction Dw.

[0040] The fan 2 rotates within the accommodation space R, drawing in air through the air inlet 32 ​​of the top panel 30 and blowing the drawn air out through the air outlet 72 of the bottom panel 20. The rotation speed of the fan 2 is controlled based on, for example, an input signal input from the outside.

[0041] (heat exchanger) The heat exchanger 3 exchanges heat between the air introduced into the accommodation space R by the fan 2 and the refrigerant. That is, the heat exchanger 3 cools or heats the air introduced into the accommodation space R. The heat exchanger 3 is composed of a heat transfer tube through which the refrigerant flows, and a plurality of fins through which the heat transfer tube is inserted in the width direction Dw. The heat exchanger 3 is provided, for example, in the accommodation space R so as to surround the fan 2 from the upper side Dvu.

[0042] (filter section) The filter unit 4 removes impurities such as dust contained in the air drawn in through the air inlet 32 ​​of the top panel 30. The filter unit 4 is disposed on the upper side Dvu of the heat exchanger 3 within the accommodation space R. In other words, the filter unit 4 is disposed between the casing 1 and the heat exchanger 3. Therefore, the filter unit 4 supplies the heat exchanger 3 with air from which impurities such as dust have been removed.

[0043] (Control unit) The control unit 5 is a device that controls the amount of rotation of the flap 73 and the rotation of the fan 2. The control unit 5 is connected to the flap 73 and the fan 2 by wire or wirelessly. The control unit 5 is provided in the accommodation space R, and is arranged on one side Dwr of the fan 2, the heat exchanger 3, and the filter unit 4.

[0044] For example, when the indoor unit 100 is equipped with a sensor (not shown) provided in the casing 1, the control unit 5 generates an input signal based on sensing information acquired by the sensor. The control unit 5 transmits the generated input signal to the flap 73 and the fan 2.

[0045] Here, we will explain the configuration of the pair of holder accommodating portions 52 of the front panel 50. When the front panel 50 is viewed from the front side Dif, the pair of holder accommodating portions 52 are arranged in a symmetrical relationship.

[0046] The following describes the holder accommodating portion 52 arranged on one side Dwr of the pair of holder accommodating portions 52 of the front panel 50. The description of the holder accommodating portion 52 arranged on the other side Dwl will be omitted.

[0047] (Holder storage section) The holder accommodating portion 52 is a recess that opens to the front surface 51 of the front panel 50 and is recessed toward the upper side Dvu as it extends toward the rear side Dib. As shown in FIGS. 2 and 3 , the holder accommodating portion 52 has a holder support portion 520, a first engagement portion 521, and a side wall portion 524.

[0048] The holder accommodating portion 52 includes an opening 50a in the front surface 51. The opening 50a in this embodiment has a rectangular shape when viewed from the front side Dif. The longitudinal direction of the opening 50a coincides with the up-down direction Dv.

[0049] (Holder support part) The holder support part 520 extends from the edge of the lower side Dvd of the opening 50a toward the rear side Dib and then toward the upper side Dvu. The holder support part 520 has a base end surface 520a, a fastening surface 520b, an upper surface 520c, and a support surface 520d. The base end surface 520a is connected to the edge of the lower side Dvd of the opening 50a of the front surface 51, and is a surface that is inclined relative to the front surface 51 so as to face the upper side Dvu.

[0050] The fastening surface 520b is connected to the edge of the rear side Dib of the base end surface 520a and extends upward from the edge toward the upper side Dvu. Therefore, the fastening surface 520b faces the front side Dif.

[0051] A fastening hole 520e that opens to the fastening surface 520b and is recessed from the fastening surface 520b toward the rear side Dib is formed in the holder support portion 520. The fastening hole 520e has a thread that allows the bolt 7 to be fastened.

[0052] The upper surface 520c is connected to the edge of the upper side Dvu of the fastening surface 520b and is a surface that spreads out horizontally from that edge. The support surface 520d is connected to the edge of the rear side Dib of the upper surface 520c and is a surface that is inclined relative to the upper surface 520c so as to face the front side Dif. In this embodiment, the support surface 520d is formed so as to be inclined at an angle of, for example, 40 to 50 degrees with respect to an imaginary horizontal plane (the direction in which the upper surface 520c spreads).

[0053] (first engagement part) The first engagement portion 521 extends from the edge of the rear side Dib of the holder support portion 520 toward the upper side Dvu. The first engagement portion 521 is formed of a flexible material. The first engagement portion 521 has a first base portion 522 and a first claw portion 523. The first base portion 522 is a flat plate-shaped member that extends upward from the edge of the rear side Dib of the holder support portion 520.

[0054] Therefore, the first base portion 522 extends above the support surface 520d in a direction intersecting the direction in which the support surface 520d extends. The first base portion 522 is connected to the edge of the support surface 520d on the rear side Dib and has a front surface 522a that extends upward from the edge toward the upper side Dvu. The front surface 522a faces the front side Dif and is connected to the support surface 520d.

[0055] The first claw portion 523 is a flat plate-shaped member extending toward the front side Dif from an edge of the upper side Dvu of the first base portion 522 toward the upper side Dvu. Therefore, the first claw portion 523 extends above the support surface 520d in a direction intersecting the direction in which the support surface 520d widens.

[0056] In this embodiment, the first claw portion 523 has a first surface 523a that extends in a direction perpendicular to the direction in which the support surface 520d extends and is connected to the front surface 522a, and a holding surface 523b that faces the side opposite to the first surface 523a.

[0057] (Side wall) The side wall portion 524 extends so as to connect the edge of the other side Dwl of the opening 50a, the holder support portion 520, and the first engagement portion 521. The side wall portion is formed from a flexible material.

[0058] The side wall portion 524 extends in a direction perpendicular to the width direction Dw, and has a side wall surface 524a that faces the one side Dwr on the other side Dwl relative to the holder support portion 520 and the first engagement portion 521.

[0059] (Arm holder) The arm holder 6 is a member that is inserted into the holder accommodating portion 52 from the front surface 51 side and is detachably fixed inside the holder accommodating portion 52. As shown in FIGS. 1 and 4, the arm holder 6 has a holding portion 60, a second engagement portion 61, and a fixing portion 62.

[0060] (holding part) The holding unit 60 has a main body 600 and an arm insertion unit 601 formed on the main body 600. The main body 600 is a member that is placed on the support surface 520d when inserted into the holder accommodating unit 52, and corresponds to the main body portion of the arm holder 6.

[0061] Here, the direction in which the main body 600 is inserted into the holder accommodating portion 52 is referred to as the "insertion direction Ds." The insertion direction Ds is the direction that coincides with the direction in which the holder support portion 520 extends. Of both sides of the insertion direction Ds, one side that is away from the front surface 51 is referred to as the "rear side Dsb," and the opposite side is referred to as the "front side Dsf."

[0062] The main body 600 has a first holder surface 600a facing one side Dwr, a second holder surface 600b facing the other side Dwl opposite to the first holder surface 600a, and a third holder surface 600c connecting the first holder surface 600a and the second holder surface 600b and facing the front side Dsf. When the main body 600 is inserted into the holder accommodation portion 52, the second holder surface 600b faces and comes into contact with the side wall surface 524a of the side wall portion 524.

[0063] Below, we will explain the configuration of each element of the arm holder 6 (arm insertion portion 601 of the holding portion 60, second engagement portion 61, and fixing portion 62) when the holding portion 60 is inserted into the holder accommodating portion 52 and the main body portion 600 is placed on the support surface 520d.

[0064] 4, the arm insertion portion 601 is a groove formed so as to recess from the first holder surface 600a of the main body portion 600 toward the other side Dwl. The arm insertion portion 601 guides and rotatably holds the arm 8 (see FIG. 1) inserted into the holder accommodating portion 52 from the front side Dif. The arm insertion portion 601 has a guide portion 602 and a bearing portion 603.

[0065] The guide portion 602 guides the arm 8 inserted from the front side Dsf to the back side Dsb. The guide portion 602 has a first guide surface 602a, a second guide surface 602b, and a first abutment surface 602c.

[0066] The first guide surface 602a extends in a direction away from the front surface 51 and faces the support surface 520d of the holder support portion 520. The second guide surface 602b extends along the first guide surface 602a and faces the first guide surface 602a.

[0067] The first abutment surface 602c connects the first guide surface 602a and the second guide surface 602b to each other, and faces the one side Dwr on the other side Dwl relative to the first guide surface 602a and the second guide surface 602b.

[0068] The edges of the first guide surface 602a, the second guide surface 602b, and the first abutment surface 602c on the front side Dsf reach the third holder surface 600c of the main body 600. Therefore, the guide portion 602 as a groove opens at the third holder surface 600c.

[0069] The bearing portion 603 is connected from the rear side Dib to the end edges of the far side Dsb of the first guide surface 602a, the second guide surface 602b, and the first abutment surface 602c, and holds the arm 8 guided by the guide portion 602. The bearing portion 603 has a bearing surface 603c, a first connecting surface 603a, a second connecting surface 603b, and a second abutment surface 603d.

[0070] The bearing surface 603c is a semi-cylindrical inner peripheral surface recessed toward the rear side Dib when viewed from one side Dwr. The first connecting surface 603a connects the first guide surface 602a and the bearing surface 603c and faces the downward side Dvd. The second connecting surface 603b connects the second guide surface 602b and the bearing surface 603c and faces the upward side Dvu.

[0071] The second abutment surface 603d connects the first connecting surface 603a, the second connecting surface 603b, and the bearing surface 603c to each other, and is a surface that faces the one side Dwr on the other side Dwl relative to the first guide surface 602a, the second guide surface 602b, and the bearing surface 603c.

[0072] Therefore, the inner surface of the arm insertion portion 601 as a groove is formed by the first guide surface 602a, the second guide surface 602b, and the first abutment surface 602c of the guide portion 602, and the bearing surface 603c, the first connecting surface 603a, the second connecting surface 603b, and the second abutment surface 603d of the bearing portion 603. The bearing portion 603 in this embodiment is located on the upper side Dvu of the opening 50a of the holder accommodating portion 52.

[0073] (Second engagement part) The second engagement portion 61 is a member that extends integrally from the main body 600 of the holding portion 60 toward the back side Dsb and is engageable with the first engagement portion 521. The second engagement portion 61 has a second base portion 610 and a second claw portion 611.

[0074] The second base portion 610 is a flat plate-shaped member extending from the main body portion 600 toward the rear side Dsb. The second base portion 610 has an opposing surface 610a that faces the support surface 520d. The opposing surface 610a extends parallel to the direction in which the support surface 520d extends.

[0075] The second claw portion 611 is a flat plate-shaped member extending from an edge of the far side Dsb of the second base portion 610 toward the downward side Dvd and toward the rear side Dib. In this embodiment, the second claw portion 611 has a receiving surface 611b that extends in a direction perpendicular to the direction in which the opposing surface 610a extends and is connected to the opposing surface 610a, and a second surface 611a that faces the side opposite to the receiving surface 611b.

[0076] Therefore, the receiving surface 611b and the second surface 611a of the second claw portion 611 extend parallel to the direction in which the first surface 523a and the clamping surface 523b of the first claw portion 523 in the first engagement portion 521 extend. The receiving surface 611b and the second surface 611a of the second claw portion 611 are disposed at positions overlapping the first surface 523a and the clamping surface 523b when viewed from the insertion direction Ds.

[0077] Here, a description will be given of the interaction between the first engagement portion 521 and the second engagement portion 61 when the main body portion 600 is inserted into the holder accommodating portion 52. When the main body portion 600 is inserted toward the back side Dsb in the holder accommodating portion 52, the second surface 611a of the second claw portion 611 comes into contact with the first surface 523a of the first claw portion 523.

[0078] When the main body 600 is further inserted toward the rear side Dsb from the position where the first surface 523a and the second surface 611a contact each other, the first surface 523a of the first claw portion 523 receives pressure from the second surface 611a of the second claw portion 611. At this time, because the first engagement portion 521 is flexible, the first claw portion 523 and the first base portion 522 connected to the first claw portion 523 bend toward the rear side Dsb.

[0079] The bending of the first claw portion 523 and the first base portion 522 toward the rear side Dsb allows the second surface 611a of the second claw portion 611 to climb over the edge of the first surface 523a of the first claw portion 523 and move toward the rear side Dsb beyond the holding surface 523b of the first claw portion 523. In other words, the second claw portion 611 climbs over the first claw portion 523 from the front side Dsf toward the rear side Dsb.

[0080] Because the first engagement portion 521 is flexible, as soon as the second claw portion 611 passes over the first claw portion 523, the bending of the first claw portion 523 and the first base portion 522 toward the rear side Dsb is eliminated, and the first claw portion 523 and the first base portion 522 return to their original positions.

[0081] When the first claw portion 523 and the first base portion 522 return to their original positions and are inserted into the rear side Dsb of the main body portion 600, the clamping surface 523b of the first claw portion 523 and the receiving surface 611b of the second claw portion 611 face each other in the insertion direction Ds and come into contact with each other.

[0082] At this time, due to the weight of the main body 600, a pulling force is applied to the second engagement portion 61 (second claw portion 611 and second base portion 610) toward the front side Dsf, but the receiving surface 611b of the second claw portion 611 is pressed down by the clamping surface 523b of the first claw portion 523, and receives a force from this clamping surface 523b toward the rear side Dsb.

[0083] The force acting on the holding surface 523b from the receiving surface 611b, which is based on the weight of the main body 600, and the force acting on the holding surface 611b from the holding surface 523b, which is based on the flexible material constituting the first engaging portion 521, are balanced, so that the main body 600 is brought to rest on the support surface 520d. The above series of actions completes the engagement between the first engaging portion 521 and the second engaging portion 61.

[0084] (fixed part) The fixing portion 62 is a member that extends integrally from the main body portion 600 and is fixed to the holder support portion 520. By being fixed to the holder support portion 520, the fixing portion 62 positions the main body portion 600 on the support surface 520d.

[0085] The fixing portion 62 extends from the main body 600 toward the front side Dsf and has a fixing surface 62a that is flush with the front surface 51 inside the opening 50a. The fixing portion 62 has a recessed groove 62b that opens to the fixing surface 62a and is recessed from the fixing surface 62a toward the rear side Dib.

[0086] Furthermore, the fixing portion 62 is formed with a fixing portion fastening hole 62d that opens to a groove bottom surface 62c of the recessed groove 62b and penetrates the fixing portion 62 from the groove bottom surface 62c toward the rear side Dib. The fixing portion fastening hole 62d has a thread that can fasten a bolt 7.

[0087] That is, in the present embodiment, the fixing portion 62 is countersunk so that the head of the bolt 7 does not protrude forward from the fixing surface 62a toward the front side Dif. The fixing portion fastening hole 62d of the fixing portion 62 is formed to have the same dimensions as the fastening hole 520e of the holder support portion 520, and is positioned from the front side Dif relative to the fastening hole 520e so as to overlap and be continuous in the installation direction Di.

[0088] The fixing portion 62 is fixed to the holder support portion 520 by fastening the bolt 7 into the fixing portion fastening hole 62d and the fastening hole 520e continuing from the front side Dif. That is, the bolt 7 is attached to the holder support portion 520 from the front side Dif, thereby fixing the fixing portion 62 to the holder support portion 520. In other words, the bolt 7 is attached to the casing 1 from the front side Dif, thereby fixing the arm holder 6 to the casing 1.

[0089] (arm) The arm 8 is inserted into the holder accommodating portion 52 from the front surface 51 side, and one end thereof is held by the arm holder 6 so as to be rotatable about an axis O extending in the width direction Dw. As shown in FIGS. 1 and 5, the arm 8 has a shaft portion 81 and an arm main body 80.

[0090] (shaft) The shaft portion 81 is a cylindrical member extending in the width direction Dw, and has an outer circumferential surface 81a and a pair of end faces 81b. The shaft portion 81 extends in the width direction Dw when the arm 8 is inserted into the holder accommodation portion 52. That is, of the pair of end faces 81b aligned in the width direction Dw, the end face 81b on one side Dwr faces the one side Dwr, and the end face 81b on the other side Dwl faces the other side Dwl.

[0091] The shaft portion 81 is inserted into the holder accommodation portion 52 while extending in the width direction Dw, and then inserted into the arm insertion portion 601 of the holding portion 60 of the arm holder 6. In this embodiment, for convenience of explanation, the shaft portion 81 is divided into two equal parts in the width direction Dw, and the portion located on the other side Dwl is referred to as the "insertion portion 82," and the portion located on the one side Dwr is referred to as the "non-insertion portion 83." Therefore, only the insertion portion 82 of the shaft portion 81 is inserted into the arm insertion portion 601 from the front surface 51 side.

[0092] The shaft portion 81 inserted into the holder accommodating portion 52 from the front surface 51 side is held by the bearing portion 603 of the arm insertion portion 601 so as to be rotatable about an axis O. In this embodiment, the axis O coincides with the center line (cylinder center line) of the bearing surface 603c, which is the semi-cylindrical inner peripheral surface of the bearing portion 603.

[0093] Here, we will explain what happens when the shaft portion 81 is inserted into the arm insertion portion 601. When the insertion portion 82 of the shaft portion 81 is inserted between the first guide surface 602a and the second guide surface 602b of the guide portion 602 of the arm insertion portion 601, the outer circumferential surface 81a of the insertion portion 82 comes into contact with the first guide surface 602a or the second guide surface 602b. The end face 81b of the insertion portion 82 facing the other side Dwl comes into contact with the first abutment surface 602c.

[0094] When a force is applied to move the shaft portion 81 toward the upward side Dvu or the rearward side Dib, the outer surface 81a of the insertion portion 82 slides against the first guide surface 602a or the second guide surface 602b, and the end surface 81b facing the other side Dwl slides against the first abutment surface 602c, and the entire shaft portion 81 is guided in the direction in which the first guide surface 602a and the second guide surface 602b extend, i.e., toward the rear side Dsb.

[0095] After being guided to the rear side Dsb by the guide portion 602, the outer surface 81a of the insertion portion 82 slides against the first connection surface 603a or the second connection surface 603b of the bearing portion 603, and the end surface 81b facing the other side Dwl slides against the second abutment surface 603d, and is guided to the rear side Dib by these first connection surface 603a and second connection surface 603b.

[0096] Therefore, the entire shaft portion 81 guided to the rear side Dsb by the guide portion 602 is guided by the first connection surface 603a and the second connection surface 603b of the bearing portion 603 to the subsequent bearing surface 603c located on the rear side Dib of the first connection surface 603a and the second connection surface 603b. When the insertion portion 82 is guided to a position where it contacts the bearing surface 603c, the entire shaft portion 81 is held by the bearing surface 603c so as to be rotatable around the axis O.

[0097] (Arm body) The arm body 80 is a member that is connected to the shaft portion 81 and rotates around the axis O as the shaft portion 81 rotates. Specifically, one end of the arm body 80 is fixed to a non-insertion portion 83 of the shaft portion 81. In other words, the arm body 80 rotates around the axis O together with the shaft portion 81.

[0098] The arm main body 80 is inserted into the holder accommodating portion 52 when the shaft portion 81 is positioned about the axis O. When viewed from one side Dwr, the arm main body 80 has a U-shape that tilts toward the front side Dif. The shaft portion 81 is inserted into the holder accommodating portion 52 together with the arm main body 80 while the arm main body 80 is fixed. Therefore, the shaft portion 81 and the arm main body 80 are not inserted into the holder accommodating portion 52 separately.

[0099] (inlet panel) The inlet panel 9 is a panel that can transition from a state in which it covers the front surface 51 of the front panel 50 from the forward side Dif to a state in which it does not cover the front surface 51 as the arm 8 rotates around the axis O. The inlet panel 9 is connected to the other end of the arm body 80.

[0100] The inlet panel 9 covers the front surface 51 of the front panel 50 from the front side Dif, thereby closing the front surface opening 53 that opens on the front surface 51 and the opening 50a of the holder accommodating portion 52.

[0101] Here, we will explain the state of the inlet panel 9 when the arm 8 rotates. As shown in Fig. 5, before the arm 8 rotates, the inlet panel 9 connected to the other end of the arm 8 is positioned so as to overlap the front surface 51 of the front panel 50, and is in a position covering the opening 50a of the holder accommodating portion 52.

[0102] 6, when the arm 8 rotates around the axis O, the inlet panel 9 connected to the other end of the arm 8 moves from a position covering the opening 50a to the forward side Dif and the upper side Dvu, transitioning to a position that opens the front surface 51. In this embodiment, the former position (FIG. 5) is referred to as the "closed position," and the latter position (FIG. 6) is referred to as the "open position."

[0103] In this embodiment, the leading edge 9a is the edge of the upper side Dvu of the inlet panel 9. The leading edge 9a of the inlet panel 9 is located lower than the leading edge 1a of the casing 1 when the inlet panel 9 is located in the closed position.

[0104] (Action and effect) According to the indoor unit 100 of the embodiment, the casing 1 has a holder accommodating portion 52 that opens to the front surface 51 and is recessed toward the upper side Dvu as it moves toward the rear side Dib. The arm holder 6 inserted into the holder accommodating portion 52 is removably fixed within the holder accommodating portion 52.

[0105] The arm 8 rotatably held by the arm holder 6 is rotatable between a closed position in which the inlet panel 9 covers the front surface 51 so as to cover the opening 50a of the holder accommodating section 52, and an open position in which the arm 8 moves forward and upward from the closed position to open the front surface 51.

[0106] As a result, when the inlet panel 9 is in the open position, the arm 8 extending from the arm holder 6 to the inlet panel 9 can be positioned further downward Dvd compared to, for example, a configuration in which the holder accommodating portion 52 is simply recessed toward the rear side Dib. In other words, the opening 50a of the holder accommodating portion 52 can be positioned further downward Dvd.

[0107] In other words, it is possible to prevent the opening 50a in the front surface 51 from being positioned on the upper side Dvu. Therefore, when the inlet panel 9 is positioned in the closed position covering the front surface 51 side, the inlet panel 9 can completely cover the opening 50a of the holder accommodating portion 52 from the front. In other words, the aesthetic appearance is not impaired when the inlet panel 9 is closed.

[0108] Furthermore, by attaching and detaching the arm holder 6 in the holder accommodating portion 52, the arm 8 held by the arm holder 6 and the inlet panel 9 fixed to the arm 8 can be simultaneously attached and detached to the casing 1. This makes it easy to attach and detach the arm 8 to and from the casing 1.

[0109] Furthermore, according to the indoor unit 100 of the embodiment, the front edge 9a of the inlet panel 9 is located below the front edge 1a of the casing 1 when the inlet panel 9 is located in the closed position.

[0110] That is, since the opening 50a of the holder accommodating portion 52 can be positioned further downward Dvd, the dimension of the inlet panel 9 in the up-down direction Dv can be reduced, and the inlet panel 9 can cover the opening 50a of the holder accommodating portion 52 from the front. Therefore, the inlet panel 9 can be made more compact and lightweight.

[0111] Furthermore, according to the indoor unit 100 of the embodiment, the arm holder 6 can be fixed to the casing 1 using a simple member such as the bolt 7. Therefore, it is possible to prevent the cost and man-hours involved in manufacturing the indoor unit 100 from increasing.

[0112] Furthermore, according to the indoor unit 100 of the embodiment, when the holding portion 60 of the arm holder 6 is inserted into the holder accommodating portion 52, the first engaging portion 521 of the arm holder 6 engages with the second engaging portion 61 of the holder accommodating portion 52. This allows the holding portion 60 to rest on the support surface 520d, facilitating the task of fixing the fixing portion 62 to the holder support portion 520 with the bolt 7.

[0113] Furthermore, according to the indoor unit 100 of the embodiment, the holding portion 60 of the arm holder 6 has a guide portion 602 that guides the shaft portion 81 of the arm 8 inserted into the holder accommodating portion 52 to the bearing portion 603. Therefore, the arm 8 can be easily attached to the arm holder 6 fixed inside the holder accommodating portion 52.

[0114] Furthermore, according to the indoor unit 100 of the embodiment, the bearing portion 603 is located at a position Dvu above the opening 50a of the holder accommodating portion 52. That is, the arm holder 6 can rotatably hold the shaft portion 81 of the arm 8 at a position Dvu above the opening 50a. This makes it possible to realize a structure that is difficult to form directly on the casing 1 by using the arm holder 6.

[0115] [Other embodiments] Although the embodiments of the present disclosure have been described above in detail with reference to the drawings, the specific configurations are not limited to those of the embodiments, and additions, omissions, substitutions, and other modifications of the configurations are possible within the scope of the gist of the present disclosure. Furthermore, the present disclosure is not limited to the embodiments, but is limited only by the claims.

[0116] In the embodiment, the first engagement portion 521 is formed of a flexible material, but the present invention is not limited to this configuration. For example, the first engagement portion 521 may not be formed of a flexible material, and the second engagement portion 61 may be formed of a flexible material instead of the first engagement portion 521. Furthermore, both the first engagement portion 521 and the second engagement portion 61 may be formed of a flexible material.

[0117] [Note] The indoor unit described in the embodiment can be understood, for example, as follows.

[0118] (1) The indoor unit 100 according to the first aspect comprises a casing 1 having a front surface 51 and a holder accommodating portion 52 that opens onto the front surface 51 and is recessed upward toward the rear; an arm holder 6 that is inserted into the holder accommodating portion 52 from the front surface 51 side and is removably fixed within the holder accommodating portion 52; an arm 8 that is inserted into the holder accommodating portion 52 from the front surface 51 side and has one end that is rotatably held by the arm holder 6 about an axis O that extends in the width direction Dw of the casing 1; and an inlet panel 9 that is fixed to the other end of the arm 8. The arm 8 is arranged so that the inlet panel 9 overlaps the front surface 51 of the casing 1 and is rotatable about the axis O between a closed position in which the inlet panel 9 overlaps the front surface 51 of the casing 1 and covers the opening 50a of the holder accommodating portion 52, and an open position in which the inlet panel 9 moves forward and upward from the closed position to open the front surface 51 of the casing 1.

[0119] As a result, when the inlet panel 9 is in the open position, the arm 8 extending from the arm holder 6 to the inlet panel 9 can be positioned further downward Dvd. That is, the opening 50a of the holder accommodating portion 52 can be positioned further downward Dvd. Also, by attaching and detaching the arm holder 6 within the holder accommodating portion 52, the arm 8 held by the arm holder 6 and the inlet panel 9 fixed to the arm 8 can be attached and detached to the casing 1 at the same time.

[0120] (2) The indoor unit 100 according to the second aspect is the indoor unit 100 of (1), wherein the front edge 9a of the inlet panel 9 may be positioned lower than the front edge 1a of the casing 1 when the inlet panel 9 is positioned in the closed position.

[0121] This allows the dimension of the inlet panel 9 in the up-down direction Dv to be reduced, and also allows the inlet panel 9 to cover the opening 50a of the holder accommodating portion 52 from the front.

[0122] (3) The indoor unit 100 according to the third aspect is the indoor unit 100 according to (1) or (2), and may further include a bolt 7 that is attached to the casing 1 from the front to fix the arm holder 6 to the casing 1.

[0123] This allows the arm holder 6 to be fixed to the casing 1 using a simple member such as the bolt 7.

[0124] (4) The indoor unit 100 according to a fourth aspect is the indoor unit 100 of (3), wherein the holder accommodating portion 52 has a holder support portion 520 having a support surface 520d that supports the arm holder 6 from below, and a first engagement portion 521 that extends above the support surface 520d in a direction intersecting the direction in which the support surface 520d extends and is flexible, and the arm holder 6 may have a holding portion 60 that is placed on the support surface 520d and holds the arm 8 rotatably around the axis O, a second engagement portion 61 that extends integrally from the holding portion 60 and is engageable with the first engagement portion 521 when the holding portion 60 is inserted into the holder accommodating portion 52, and a fixing portion 62 that extends integrally from the holding portion 60 and is fixed to the holder support portion 520 by the bolt 7.

[0125] This allows the holding portion 60 to rest on the support surface 520d, making it easier to fix the fixing portion 62 to the holder support portion 520 with the bolts 7.

[0126] (5) The indoor unit 100 according to a fifth aspect is the indoor unit 100 of (4), wherein the arm 8 has an arm main body 80 to which the inlet panel 9 is fixed and an axle portion 81 that allows the arm main body 80 to rotate around the axis O, and the holding portion 60 has a main body portion 600 and an arm insertion portion 601 formed in the main body portion 600, and the arm insertion portion 601 may have a guide portion 602 that guides the axle portion 81 in a direction away from the front surface 51 when the arm 8 is inserted into the holder accommodating portion 52, and a bearing portion 603 that holds the axle portion 81 guided by the guide portion 602 so that it can rotate around the axis O.

[0127] This allows the arm 8 to be easily attached to the arm holder 6 fixed inside the holder accommodating portion 52.

[0128] (6) The indoor unit 100 according to a sixth aspect is the indoor unit 100 according to (5), wherein the bearing portion 603 may be positioned above the opening 50 a of the holder accommodating portion 52 .

[0129] This allows the arm holder 6 to realize a structure that would be difficult to form directly on the casing 1. [Explanation of symbols]

[0130] DESCRIPTION OF SYMBOLS 1...Casing 1a, 9a...Front edge 2...Fan 3...Heat exchanger 4...Filter section 5...Control section 6...Arm holder 7...Bolt 8...Arm 9...Inlet panel 10...Rear panel 11...Rear side 20...Bottom panel 21...Bottom surface 30...Top panel 31...Top surface 32...Intake port 40...Side panel 41...Side surface 50...Front panel 50a...Opening 51...Front surface 52...Holder accommodating section 53...Front opening 60...Retaining section 61...Second engagement section 62...Fixing section 62a...Fixing surface 62b...Groove 62c...Groove bottom surface 62d...Fixing section fastening hole 70...Connection panel 71...Connection surface 72...Blowout port 73...Flap 80...Arm body 81...Shaft section 81a...Outer surface 81b...End surface 82...Insertion section 83...Non-insertion portion 100...Indoor unit 520...Holder support portion 520a...Base end surface 520b...Fastening surface 520c...Upper surface 520d...Support surface 520e...Fastening hole 521...First engagement portion 522...First base portion 522a...Front surface 523...First claw portion 523a...First surface 523b...Retaining surface 524...Side wall portion 524a...Side wall surface 600...Main body portion 600a...First holder surface 600b...Second holder surface 600c...Third holder surface 601...Arm insertion portion 602...Guide portion 602a...First guide surface 602b...Second guide surface 602c...First abutment surface 603...Bearing portion 603a...First connection surface 603b...Second connection surface 603c...Bearing surface 603d...Second abutment surface 610...Second base portion 610a...Opposite surface 611...Second claw portion 611a...Second surface 611b...Receiving surface Di...Installation direction Dif...Front side Dib...Rear side Ds...Insertion direction Dsf...Front side Dsb...Rear side Dv...Up-down direction Dvu...Upside side Dvd...Downside Dw...Width direction Dwr...One side Dwl...Other side O...Axis R...Storage space W...Wall surface

Claims

1. a casing having a front surface and a holder accommodating portion that is open to the front surface and recessed upward toward the rear; an arm holder inserted into the holder accommodating portion from the front side and detachably fixed within the holder accommodating portion; an arm that is inserted into the holder accommodating portion from the front side and has one end held by the arm holder so as to be rotatable about an axis extending in the width direction of the casing; an inlet panel fixed to the other end of the arm; Equipped with The arm a closed position in which the inlet panel is disposed so as to overlap the front surface of the casing and covers the opening of the holder accommodating portion; an open position in which the inlet panel moves forward and upward from the closed position to open the front surface of the casing; and is rotatable about the axis between a bolt attached to the casing from the front to fix the arm holder to the casing; The holder accommodating portion is a holder support portion having a support surface that supports the arm holder from below; a first engagement portion that extends above the support surface in a direction intersecting a direction in which the support surface extends and that has flexibility; and The arm holder includes: a holding portion that is placed on the support surface and that holds the arm rotatably about the axis; a second engaging portion extending integrally from the holding portion and capable of engaging with the first engaging portion when the holding portion is inserted into the holder accommodating portion; a fixing portion extending integrally from the holding portion and fixed to the holder support portion by the bolt; An indoor unit having the above structure.

2. The indoor unit according to claim 1 , wherein a front edge of the inlet panel is located lower than a front edge of the casing when the inlet panel is located at the closed position.

3. The arm an arm body to which the inlet panel is fixed; a shaft portion that allows the arm body to rotate about the axis; and The holding portion is a main body; an arm insertion portion formed on the main body portion; and The arm insertion portion is a guide portion that guides the shaft portion in a direction away from the front surface when the arm is inserted into the holder accommodating portion; a bearing portion that holds the shaft portion guided by the guide portion so that the shaft portion can rotate around the axis; The indoor unit according to claim 1 or 2, comprising:

4. The indoor unit according to claim 3 , wherein the bearing portion is located above an opening of the holder accommodating portion.

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