JP6359577B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and more particularly to an air conditioner that is opened so that a front panel is tilted forward to increase a suction area.

  As shown in FIG. 1 of the document, the air conditioner disclosed in Patent Document 1 is provided with a grill portion 2 on the front surface 1a of the conditioner body 1 so as to be openable and closable. The grill part 2 includes a front panel 2b provided to be openable and closable with respect to the front face 1a so as to cover the front face 1a of the main body 1 and an open / close panel 2a provided to be openable and closable with respect to the front panel 2b. I have.

  During the operation of the air conditioner, the open / close panel 2a opens to the front side so as to tilt forward with respect to the front panel 2b. As a result, a large amount of room air is sucked from the air inlets opened on both the upper surface and the front surface 1a of the air conditioner, and the amount of heat exchange between the refrigerant and the room air in the built-in heat exchanger 5 is increased. Efficiency can be improved. The opening angle of the open / close panel 2a is preferably large.

  On the other hand, when the air conditioner is stopped, the lower edge portion of the front panel 2b is lifted upward and rotated with respect to the front surface 1a of the conditioner body 1, thereby opening and closing the panel 2a and the front panel 2b, that is, the grill portion. 2 can be opened with respect to the front surface 1a, and maintenance operations such as cleaning and desorption of the filter 4 provided on the front surface 1a and cleaning of the heat exchanger 5 can be performed.

  As described above, in order to make the opening / closing panel 2a openable to the front panel 2b, as shown in FIG. A link mechanism 60 composed of links, a drive unit 30 incorporating a motor gear for driving the link mechanism 60, and the like are mounted.

  The link mechanism 60 includes a resin cross link 606 that is rotated by being driven by the drive unit 30, a first link 608, a second link 610, and a third link 613, and an intermediate portion of the second link 610. The first link 608 is inserted into the hole-shaped insertion portion 614 formed in the above. When the cross link 606 rotates in a predetermined direction, the first link 608 is pushed out, the second link 610 and the third link 613 are pulled up, and the open / close panel 2a is opened.

JP2013-122326A

  As described above, the link mechanism 60 that opens the open / close panel 2a includes the cross link 606, the first link 608, the second link 610, and the third link 613. In this configuration, In order to increase the opening angle of the upper part of the open / close panel 2a, the first link 608 must be lengthened.

  However, in order to lengthen the first link 608, the second link 610 must also be lengthened, so that when the opening / closing panel 2a is closed, the links 608, 610, 613 are accommodated below the opening / closing panel 2a. A large space must be secured and the size of the harmony machine body 1 must be increased.

  Moreover, if the 2nd link 610 is lengthened, when the opening / closing panel 2a opens, the lower part of the opening / closing panel 2a will leave | separate from the front surface 1a of the harmony machine main body 1. FIG. If it becomes so, the air-conditioned air which blows off from the blower outlet 11 provided in the lower part of the front surface 1a will be inhaled short-circuited between the lower end of the opening-and-closing panel 2a and the front surface 1a at the inlet port provided in the front surface 1a. In addition to lowering the cooling and heating efficiency, there is a concern that condensation occurs inside the conditioner during the cooling operation.

  Furthermore, since the drive unit 30 and the link mechanism 60 that open the open / close panel 2a are all mounted on the front panel 2b, the weight of the front panel 2b is large. Therefore, as described above, the entire grill portion 2 is opened with respect to the front face 1a, and the heavy weight front panel 2b is supported when performing maintenance work such as cleaning and desorption of the filter 4 and washing of the heat exchanger 5. There is a problem that it is difficult to continue and workability is poor. In addition, when the entire grill portion 2 is opened with respect to the front surface 1a, the open / close panel 2a moves independently with respect to the front panel 2b, and there is a concern that workability may be lowered in this respect.

  The present invention has been made in view of such circumstances, and in an air conditioner in which the front open / close panel is tilted forward, the open / close mechanism of the open / close panel has a simple and lightweight configuration, and An object of the present invention is to provide an air conditioner capable of increasing the opening angle to increase the amount of intake air and improving the workability during maintenance work performed by opening the front panel together with the open / close panel.

In order to solve the above problems, the present invention employs the following means.
That is, an air conditioner according to the present invention covers a front surface of a main body casing, and a front panel that can be opened and closed so as to open upward about a hinge portion provided on an upper side thereof, and the front panel. An open / close panel attached to be openable / closable, a closed position for closing the open / close panel on the intake opening of the front panel, and an open position opened to the front side so as to tilt forward with respect to the front panel An open / close mechanism that opens and closes between the slide rail, the open / close mechanism includes a slide rail that extends in the vertical direction provided on both sides of the front panel, and a fixed pivot portion that is provided above the slide rail. A slider that is slidable along the slide rail and has a movable pivot portion and a rack gear, and an upper pivot portion and a lower pivot portion that are provided on both sides of the open / close panel An upper link connecting the fixed pivot part and the upper pivot part, a lower link shorter than the upper link connecting the movable pivot part and the lower pivot part, and the upper link An intermediate link that connects between the intermediate pivot portion provided in the intermediate portion and the movable pivot portion, and a drive portion that includes a pinion gear that meshes with the rack gear of the slider.

  According to the air conditioner having the above configuration, when the pinion gear of the drive unit rotates and pushes the slider upward, the intermediate link connected to the movable pivot unit of the slider is connected to the fixed pivot unit and the open / close panel of the main body casing. Push up the middle part of the upper link connecting the upper pivot part. For this reason, the upper link is rotated upward, whereby the upper part of the open / close panel in the closed position is separated from the front panel, and the entire open / close panel is lifted upward. When the open / close panel is lifted upward, the lower link is rotated upward, and the lower portion of the open / close panel is separated from the front panel. Since the lower link is shorter than the upper link, the open / close panel opens to the front side so as to tilt forward with respect to the front panel, and the open / close panel is in the open position.

  According to this configuration, since the length of the upper link can be made longer than the length of the lower link, the opening angle of the open / close panel in the open position can be increased, and the air intake port provided on the front surface of the main body housing Therefore, a large amount of room air can be sucked to increase the amount of intake air, thereby improving the cooling and heating efficiency. Moreover, the opening / closing mechanism can be made simple and lightweight.

  The front panel can be opened upward with respect to the front surface of the main body housing together with the open / close panel, thereby cleaning and removing the air inlet filter provided on the front surface of the main body housing, washing the heat exchanger, etc. Maintenance work can be performed.

  In the air conditioner, the driving unit may be installed on the main body casing side, and the pinion gear of the driving unit may mesh with the rack gear when the front panel is closed with respect to the main body casing. .

  According to the above configuration, when the front panel is opened upward together with the opening / closing panel and the opening / closing mechanism with respect to the front surface of the main body casing, the heavy driving unit is left on the main body casing side. For this reason, the entire weight of the front panel can be reduced, and thereby the workability during maintenance work performed by opening the front panel can be improved.

  In the air conditioner, the slider is movable relative to the movable pivot portion in the sliding direction of the slider, and is urged by a biasing portion to a neutral position within a range of relative movement with the movable pivot portion. It is good also as the structure currently made.

According to the above configuration, when the front panel is opened upward with respect to the front surface of the main body housing and then closed again, the position of the teeth of the rack gear of the slider and the position of the teeth of the pinion gear of the drive unit are shifted. When the rack gear of the slider moves relative to the movable pivot portion in the sliding direction, the position of the teeth of the rack gear is adjusted to the position of the teeth of the pinion gear.
For this reason, when the front panel is closed, the rack gear and the pinion gear are reliably meshed so that the front panel can be smoothly closed, and the workability during maintenance work performed by opening the front panel can be improved.

  The air conditioner may include a lock mechanism that locks the opening / closing operation of the opening / closing panel with respect to the front panel when the front panel is opened with respect to the front surface of the main body casing.

  According to the above configuration, when the front panel is opened with respect to the front surface of the main body housing, the opening / closing operation of the open / close panel with respect to the front panel is locked by the action of the lock mechanism. For this reason, the opening / closing panel does not move independently with respect to the front panel, and the maintenance workability can be improved.

  In the above air conditioner, the lock mechanism is provided on a hook through hole formed in the front panel and on a rear surface side of the open / close panel, and is provided in the hook through hole when the open / close panel is in the closed position. An annular hook that is inserted, a lock position that is provided on the rear surface side of the front panel and protrudes so that a tip end portion thereof overlaps the hook through hole, and an unlock position in which the tip end portion does not overlap the hook through hole. A slant cam is formed on the back side thereof, a collar member constantly biased to the lock position side, and a projecting projection on the front surface of the main body casing, and the front panel is connected to the main body casing. It is good also as a structure provided with the cancellation | release protrusion which contacts the said slope cam of the said collar member, and slides the said collar member to the said unlocking position side when closed with respect to the front surface.

According to the above configuration, when the front panel is closed with respect to the front surface of the main body housing, the release protrusion comes into contact with the inclined cam of the flange member, and the flange member slides to the unlock position side. For this reason, the open / close panel can move between the closed position and the open position with respect to the front panel.
Further, when the front panel is opened with respect to the front surface of the main body casing, the release protrusion is separated from the inclined cam of the heel member, and the heel member slides to the lock position side by the urging force that always acts. For this reason, the opening / closing panel is locked for opening / closing with respect to the front panel.
According to this configuration, the lock mechanism included in the opening / closing mechanism of the opening / closing panel can be configured to be simple and lightweight.

  In the air conditioner, when the front panel is opened with respect to the front surface of the main body housing, the front panel is opened between the front panel and the front surface of the main body housing. The supporting lever to be maintained may be configured to be rotatable on the front surface of the main body casing.

  According to the above configuration, since the front panel can be kept open by bridging the support lever with the front panel opened, maintenance workability can be improved.

  In the above air conditioner, a drawer hook may be provided on the rear side of the front panel so as to pull out the support lever to a functional position when the front panel opens with respect to the front surface of the main body casing. .

  According to the above configuration, since the drawer hook provided on the rear side of the front panel pulls out the support lever to the functional position at the same time as opening the front panel, the operator can save time and effort for pulling out the support lever. Can be improved.

  As described above, according to the air conditioner according to the present invention, the opening / closing mechanism of the opening / closing panel has a simple and lightweight structure in which the opening / closing panel on the front surface is opened forward and the opening angle of the upper part of the opening / closing panel is It is possible to increase the intake air amount and increase the workability during maintenance work performed by opening the front panel together with the open / close panel.

1 is a perspective view of an air conditioner according to an embodiment of the present invention. It is a perspective view of the air conditioner with the front panel opened. It is a side view of the air conditioner with the front panel closed. It is a perspective view of the air conditioner with the open / close panel opened. It is a side view of the air conditioner with the front panel opened. It is the perspective view which looked at the front panel assembly from the back side. It is the disassembled perspective view which looked at the front panel assembly from the rear surface side. It is a side view of an opening / closing mechanism. (A) is a side view of the opening and closing mechanism before the rack gear and the pinion gear are engaged with each other, and (B) is a state after the engagement. (A) is a front view of a lock mechanism in which a collar member is in a lock position, and (B) is a lock mechanism in which a collar member is in an unlock position. It is a perspective view of the lock mechanism in which a collar member is in a locked position. (A) is a longitudinal cross-sectional view of the locking mechanism showing a state in which the front panel is closed and the hook member is in the locked position by a vertical cross-section along the line XIIA-XIIA in FIG. 10, and (B) is a XIIB-XIIB in FIG. It is a longitudinal cross-sectional view of the locking mechanism which shows the state which a front panel opens by the longitudinal cross-section in alignment with a line | wire, and a collar member exists in an unlocking position. It is a side view of the air conditioner showing a state where the front panel is opened and the support lever is bridged. It is a figure which shows another embodiment of a support lever, (A) shows the state which the front panel closed, (B) shows the side surface of the air conditioner which shows the state which the front panel opened and the support lever was spanned FIG. It is a perspective view of the support lever shown in FIG. It is the XVI section enlarged view of FIG. It is the XVII arrow directional view of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an air conditioner according to an embodiment of the present invention. The air conditioner 1 is installed indoors as an indoor unit in an air conditioning system that compresses and cools a refrigerant, and includes a resin-molded main body case 2 having a rectangular housing shape, and the main body case. 2 is provided with a front panel 3 that covers the front surface 2a, and an open / close panel 4 as an exterior design surface that is attached to the front panel 3 so as to be openable and closable. A front panel assembly 5 is constituted by the front panel 3 and the open / close panel 4 (see also FIGS. 6 and 7). In addition, the left and right side surfaces of the main body housing 2 are covered with a decorative cover member (not shown) to adjust the appearance.

  A plurality of air inlets 7 and 8 are opened on the front surface 2a and the upper surface 2b of the main body housing 2, and a blower fan 9, a heat exchanger (not shown), etc. are installed inside the main body housing 2 (see FIG. 2). ). A blower outlet 11 is provided on the lower surface 2 c of the main body housing 2. During the air-conditioning operation, the blower fan 9 is operated to suck indoor air from the intake ports 7 and 8, and this air exchanges heat with the cooled or heated refrigerant by passing through the heat exchanger. The air is blown into the room from the outlet 11 as conditioned air for heating. The intake ports 7 and 8 are provided with filters (not shown) for removing dust from the intake air.

  As shown in FIGS. 2 to 4 and the like, the front panel 3 is provided so as to be openable and closable with respect to the front surface 2 a of the main body housing 2. That is, the hinge part 13 is provided in the both ends of the upper side of the front panel 3, and the front panel 3 can be opened upward with the hinge part 13 as an axis. As shown in FIGS. 2, 6, and 7, the front panel 3 includes a plurality of air intake openings that align with the air inlet 7 of the main body housing 2 when closed with respect to the front surface 2 a of the main body housing 2. 15 is formed.

  When the front panel 3 is closed with respect to the front surface 2a of the main body housing 2, the hooks 16 provided near the left and right lower ends of the front panel 3 (see FIGS. 2, 3, and 5 to 7). Is inserted into a hook insertion hole 17 (see FIG. 2) formed in the front surface 2a of the main body housing 2 and is resin-molded inside the hook insertion hole 17 in a substantially U-shaped receiving hook 18 ( (See FIG. 3). At the time of the engagement, the receiving side hook 18 is elastically deformed, so that the front panel 3 is closed with a click feeling. Further, by pulling the vicinity of the left and right lower ends of the front panel 3 with a predetermined force, the front panel 3 can be opened by releasing the engagement of the hooks 16 and 18.

  On the other hand, the open / close panel 4 overlaps the front side of the front panel 3 and closes the intake opening 15 of the front panel 3 (see FIGS. 2, 3, and 5), and tilts forward with respect to the front panel 3. Thus, an opening / closing operation is performed between the opening position 4B (see FIGS. 1 and 4) opened to the front side. On both sides of the front panel 3 and the open / close panel 4, an open / close mechanism 20 that opens and closes the open / close panel 4 between the closed position 4 </ b> A and the open position 4 </ b> B is provided.

  As shown in FIGS. 4, 6 to 8, and the like, the opening / closing mechanism 20 includes a slide rail 21 extending in the vertical direction provided on both side portions of the front panel 3 and a fixing provided above the slide rail 21. A pivot part 22 and a slider 23 slidably provided along the slide rail 21 are provided. The slider 23 is provided with a movable pivot portion 24, and a rack gear 25 is formed on a vertical side facing the main body housing 2 side.

  Further, the opening / closing mechanism 20 includes an upper pivot portion 26 and a lower pivot portion 27 provided on both sides of the opening / closing panel 4, an upper link 28, a lower link 29, and an intermediate link 31. . An upper link 28 is connected between the fixed pivot portion 22 and the upper pivot portion 26, and a lower link 29 is connected between the movable pivot portion 24 and the lower pivot portion 27. The lower link 29 is shorter than the upper link 28. Further, an intermediate link 31 is connected between the intermediate pivot portion 30 provided at the intermediate portion of the upper link 28 and the movable pivot portion 24.

  Further, a drive unit 33 that drives the opening / closing mechanism 20 is installed on the main body housing 2 side. As shown in FIG. 4, the drive unit 33 includes, for example, a drive motor 34 fixed to the side surface of the main body housing 2, a first gear 35 provided on the rotation shaft of the drive motor 34, and the first gear. 35, a second gear 36 that meshes with 35, a third gear 37 that is integrally provided on the back side of the second gear 36, and a pinion gear 38 that meshes with the third gear 37. The drive unit 33 may be replaced with a servo motor in which the drive motor 34 and the gears 35 to 38 are combined.

  As shown in FIGS. 3 and 4, the pinion gear 38 of the drive unit 33 meshes with the rack gear 25 when the front panel 3 is closed with respect to the front surface 2 a of the main body housing 2. That is, as shown in FIG. 5, when the front panel 3 is opened, the rack gear 25 is separated from the pinion gear 38, and the meshing of both the gears 25, 38 is separated.

  During the air conditioning operation of the air conditioner 1 configured as described above, the pinion gear 38 of the drive unit 33 rotates and the slider 23 is moved upward while the front panel 3 is closed with respect to the front surface 2a of the main body housing 2. The intermediate link 31 connected to the movable pivot portion 24 of the slider 23 is pushed to the middle of the upper link 28 connecting the fixed pivot portion 22 of the main body housing 2 and the upper pivot portion 26 of the open / close panel 4. Push up the part.

  Therefore, the upper link 28 pivots upward, whereby the upper part of the open / close panel 4 at the closed position 4A is separated from the front panel 3 and the entire open / close panel 4 is lifted upward. When the open / close panel 4 is lifted upward, the lower link 29 is rotated upward, and the lower portion of the open / close panel 4 is separated from the front panel 3. Since the lower link 29 is shorter than the upper link 28, the open / close panel 4 opens to the front side so as to tilt forward with respect to the front panel 3, and the open / close panel 4 is in the open position 4B.

  According to this configuration, since the length of the upper link 28 can be made longer than the length of the lower link 29, the opening angle of the open / close panel 4 at the open position 4 </ b> B can be increased, and the front surface 2 a of the main body housing 2. A large amount of room air can be sucked from the air inlet 7 provided in the air intake to increase the amount of intake air, thereby improving the cooling and heating efficiency. On the other hand, by making the lower link 29 the minimum necessary length, the lower end of the open / close panel 4 is not greatly separated from the front surface 2a of the main body housing 2 when the open / close panel 4 is opened. It is possible to prevent the conditioned air to be sucked into the intake port in a short circuit. Further, the opening / closing mechanism 20 can be configured to be simple and lightweight.

  The front panel 3 constitutes a front panel assembly 5 together with the open / close panel 4, and the front panel assembly 5 is opened upward with respect to the front surface 2 a of the main body housing 2 as shown in FIGS. 2 and 5. Maintenance work such as cleaning and desorption of the filter of the air inlet 7 provided on the front surface 2a of the main body housing 2 and washing of the heat exchanger can be performed.

  In this air conditioner 1, the drive unit 33 of the opening / closing mechanism 20 of the open / close panel 4 is installed on the main body housing 2 side, and when the front panel 3 is closed with respect to the main body housing 2, A pinion gear 38 meshes with the rack gear 25.

  Therefore, when the front panel 3 is opened upward together with the opening / closing panel 4 and the opening / closing mechanism 20 with respect to the front surface 2a of the main body housing 2, the heavy drive unit 33 is left on the main body housing 2 side. Therefore, the entire weight of the front panel 3 can be reduced, and thereby the workability during maintenance work performed by opening the front panel 3 can be improved.

  As shown in FIGS. 8 and 9, the slider 23 can move relative to the movable pivot portion 24 in the sliding direction (direction along the slide rail 21). For example, a rectangular slide hole 41 extending in the sliding direction is formed in the slider 23, and a slide piece 42 is slidably fitted in the slide hole 41, and a movable pivot portion is attached to the slide piece 42. 24 is provided. Substantially V-shaped buffers (biasing portions) 42 a and 42 b are formed at both ends in the slide direction of the slide piece 42, and the buffers 42 a are projected from both ends in the slide direction of the slide hole 41. Center plates 41a and 41b having round portions are elastically sandwiched.

  As shown in FIG. 9A, the slider 23 is kept at a neutral position C relative to the movable pivot portion 24 by the biasing action of the buffers 42 a and 42 b provided at both ends of the slide piece 42. Is always energized. Therefore, when a relative force in the direction along the slide rail 21 is not applied between the slider 23 and the slide piece 42, the position of the center portion in the longitudinal direction of the slide hole 41 and the movable pivot portion 24 of the slide piece 42. The position matches.

  As shown in FIG. 9B, for example, when a force F that pushes down the slider 23 is applied, the slider 23 moves downward by L with respect to the position (neutral position C) of the slide piece 42 (movable pivot portion 24). To do. At this time, the upper center plate 41a bites into the upper buffer 42a of the slide piece 42, and the upper buffer 42a is expanded. When the force F is removed, the upper center plate 41a is pushed out by the elasticity of the upper buffer 42a, and the slider 23 is returned to the neutral position C. On the contrary, when a force for pushing the slider 23 upward is applied, the lower center plate 41b bites between the lower buffers 42b, and the same effect is exerted by the elasticity of the lower buffer 42b.

According to this configuration, when the front panel 3 is opened upward with respect to the front surface 2a of the main body housing 2 and closed again, the position of the teeth of the rack gear 25 of the slider 23 and the teeth of the pinion gear 38 of the drive unit 33 are determined. Even if the position is deviated, the rack gear 25 of the slider 23 moves relative to the movable pivot portion 24 in the sliding direction, so that the tooth position of the rack gear 25 is adjusted to the tooth position of the pinion gear 38 (synchronizing action). Is played).
For this reason, when the front panel 3 is closed, the rack gear 25 and the pinion gear 38 are securely meshed so that the front panel 3 can be smoothly closed, and the workability during maintenance work performed by opening the front panel 3 is improved. Can be made.

  Between the front panel 3 and the open / close panel 4, a lock mechanism 46 shown in FIGS. 7 and 10 to 12 is provided. The locking mechanism 46 is a mechanism that locks the opening / closing operation of the opening / closing panel 4 with respect to the front panel 3 when the front panel 3 is opened with respect to the front surface 2 a of the main body housing 2.

  The lock mechanism 46 has a hook through-hole 47 formed in the front panel 3 and an annular projecting projection on the rear surface side of the open / close panel 4 and is inserted into the hook through-hole 47 when the open / close panel 4 is in the closed position 4A. A hook 48 (see also FIG. 4), a pair of left and right flange members 50 arranged on the rear side of the front panel 3, and a pair of left and right release protrusions 52 (also shown in FIG. 5) projecting from the front surface 2a of the main body housing 2. For example).

  As shown in FIGS. 7 and 10 to 12, the eaves member 50 is a resin-molded, substantially cross-shaped small part that is fitted into a slide guide 51 formed on the rear surface side of the front panel 3 to move up and down. It can slide in the direction. The flange member 50 is formed with a pair of left and right leaf spring portions 50 a that project horizontally, and the tips thereof are in contact with the inclined surfaces 53 a of a pair of stoppers 53 formed on both sides of the slide guide 51. The slopes 53a of the stoppers 53 on both sides face each other and are narrowed downward.

  As shown in FIGS. 10A, 11 and 12A, the eaves member 50 has a lock position 50A protruding so that the tip end portion 50b overlaps the hook through hole 47, and FIGS. As shown in FIG. 12B, it is possible to slide between a position where the tip end portion 50b does not overlap with the hook through-hole 47, that is, an unlock position 50B lowered below the lock position 50A. At the lock position 50 </ b> A, the leaf spring portion 50 a extends linearly without being deformed, and the tip of the leaf spring portion 50 a comes into light contact with the slope 53 a of the stopper 53. In the unlocked position 50B, the leaf spring portion 50a is elastically deformed upward, and the tip thereof strongly contacts the inclined surface 53a of the stopper 53. The flange member 50 is always urged toward the lock position 50 </ b> A by the urging force of the leaf spring portion 50 a and the inclined surface 53 a of the stopper 53. That is, when the flange member 50 is pushed down from the lock position 50A to the unlock position 50B, the leaf spring portion 50a is elastically deformed, and the reaction member returns the flange member 50 to the lock position 50A.

  A slope cam 50 c is formed on the back side of the flange member 50. The slope of the slope cam 50c increases from the lock position 50A side (upper side) of the flange member 50 toward the unlock position 50B side (lower side). Note that the sliding direction of the eaves member 50 is not necessarily the vertical direction as in the present embodiment, and may be the horizontal direction or another direction.

  As shown in FIG. 12A, the open / close panel 4 is in the closed position 4A, and the front panel 3 is open with respect to the front surface 2a of the main body housing 2, and the front panel 3 and the front surface 2a of the main body housing 2 are displayed. When the space S is widened, the pair of left and right release protrusions 52 protruding from the front surface 2a of the main body housing 2 does not press the inclined cam 50c of the flange member 50. Therefore, the hook member 50 is placed at the lock position 50A by the urging force of the leaf spring portion 50a, and the tip portion 50b of the hook member 50 overlaps the hook through hole 47, whereby the annular hook inserted through the hook through hole 47 is obtained. It is inserted through 48 annular holes (see also FIG. 10 (A)). Therefore, the annular hook 48 cannot be removed from the hook through hole 47, and the open / close panel 4 is locked at the closed position 4A and cannot move to the open position 4B.

  As shown in FIG. 12B, the open / close panel 4 is in the closed position 4A, and the front panel 3 is closed with respect to the front surface 2a of the main body housing 2, so that the front panel 3 and the front surface 2a of the main body housing 2 are closed. Is reduced from S to Sa, the release protrusion 52 protruding from the front surface 2a of the main body housing 2 comes into contact with the inclined cam 50c of the flange member 50 and presses it. Therefore, the thrust member 50 slides the distance member H to the unlock position 50B side by the thrust force provided by the slope cam 50c, so that the tip 50b of the collar member 50 does not overlap the hook through hole 47, and the annular hook 48 has an annular shape. It escapes from the hole (see also FIG. 10B). Therefore, the annular hook 48 can be removed from the hook through hole 47, and the open / close panel 4 can be moved from the closed position 4A to the open position 4B.

  By providing the lock mechanism 46 configured as described above, when the front panel 3 is opened with respect to the front surface 2a of the main body housing 2, the lock mechanism 46 acts to open and close the open / close panel 4 with respect to the front panel 3. The operation is locked. For this reason, the opening / closing panel 4 does not move independently with respect to the front panel 3, and the workability at the time of the maintenance work performed by opening the front panel 3 (front panel assembly 5) can be improved. Moreover, the lock mechanism 46 can be configured to be very simple and lightweight.

  As shown in FIGS. 2, 5, and 13, a support lever 57 is provided on the front surface 2 a of the main body housing 2. The support lever 57 is provided so as to rotate up and down around the hinge portion 58, and is placed at a position that hangs downward when the front panel 3 (front panel assembly 5) is closed. (See FIGS. 2 and 5).

  When the front panel 3 is opened with respect to the front surface 2 a of the main body housing 2, the support lever 57 is rotated upward as shown in FIG. 13, and the tip is formed on the rear surface of the front panel 3. It is latched by the latching protrusion 59 (refer also FIG. 7, FIG. 10). Thereby, the support lever 57 is spanned between the front surface 2a of the main body housing | casing 2, and the front panel 3, and the front panel 3 (front panel assembly 5) is maintained in the open state.

  By providing such a support lever 57, the front panel 3 can be kept open, so that the workability during maintenance work performed by opening the front panel 3 (front panel assembly 5) is remarkably improved. Can do. Since the support lever 57 is accommodated along the front surface 2a of the main body housing 2 when not in use, the support lever 57 can be stored in a narrow space between the front surface 2a of the main body housing 2 and the front panel 3. Does not occupy space.

  14 to 17 show another embodiment of the support lever. Like the support lever 57 described above, the support lever 61 is rotatably provided on the front surface 2a of the main body housing 2 via a hinge portion 62. As shown in FIG. It is accommodated along the front surface 2a of the main body housing 2 in a posture facing upward. A drawer hook 63 is provided on the rear surface side of the front panel 3, and the drawer hook 63 is hooked on the upper end portion of the support lever 61 when the front panel 3 is closed.

  As shown in FIG. 14B, when the front panel 3 is opened with respect to the front surface 2a of the main body housing 2, the support lever 61 is pulled out to the functional position tilted to the front side by the pull-out hook 63 on the rear surface of the front panel 3. It is. As shown in FIGS. 15 and 16, since the rotation restricting protrusion 64 is provided at the base end portion of the support lever 61, the support lever 61 is maintained at a predetermined angle. When the support lever 61 is bridged between the front surface 2a of the main body housing 2 and the front panel 3, the front panel 3 can be kept open.

  When the front panel 3 is closed, the support lever 61 is pushed back to the accommodation position along the front surface 2 a of the main body housing 2 by being pushed by the rear surface of the front panel 3. As shown in FIGS. 15 and 17, positioning protrusions 65 projecting sideways are provided on both sides near the base end of the support lever 61. When the support lever 61 is in the storage position, the positioning protrusions 65 fits into a positioning recess 66 formed in the hinge 62, and the support lever 61 is held in the storage position. For this reason, it is prevented that the support lever 61 naturally rotates to the functional position or resonates during the air-conditioning operation and generates abnormal noise.

  According to the above configuration, at the same time that the front panel 3 is opened, the pull-out hook 63 provided on the rear side of the front panel 3 pulls the support lever 61 to the functional position, thereby saving the operator from having to pull out the support lever 61. Thus, maintenance workability can be improved.

  As described above, according to the air conditioner 1 according to the present embodiment, the opening / closing mechanism 20 of the opening / closing panel 4 has a simple and lightweight structure in which the opening / closing panel 4 on the front surface is opened by tilting forward. The opening angle of the upper part of the panel 4 can be increased to increase the amount of intake air, and the workability during maintenance work performed by opening the front panel 3 together with the open / close panel 4 can be improved.

It should be noted that the present invention is not limited to the configuration of the above-described embodiment, and can be appropriately changed or improved. Embodiments with such changes and improvements are also included in the scope of the right of the present invention. And
For example, the position of each pivot part in the opening / closing mechanism 20 and the length, shape, etc. of each link are not necessarily limited to those of the above embodiment. Further, the drive unit 33 may be installed on the main body housing 2 side, and the configuration and the like may be changed.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Main body housing | casing 2a Front surface 3 of main body housing | casing Front panel 4 Opening / closing panel 4A Opening / closing panel closing position 4B Opening / closing panel opening position 13 Hinge part 15 Intake opening part 20 Opening / closing mechanism 21 Slide rail 22 Fixed pivot part 23 Slider 24 Movable pivot portion 25 Rack gear 26 Upper pivot portion 27 Lower pivot portion 28 Upper link 29 Lower link 30 Intermediate pivot portion 31 Intermediate link 33 Drive portion 38 Pinion gears 42a, 42b Buffer (biasing portion)
46 Locking mechanism 47 Hook through-hole 48 Annular hook 50 閂 member 50A 閂 member locking position 50B 閂 member unlocking position 50b 閂 member tip 50c slope cam 52 release protrusion 57 support lever 61 support lever 63 drawer hook C neutral position

Claims (7)

A front panel that covers the front surface of the main body housing and is openable and closable so as to open upward with a hinge provided on the upper side as an axis;
An open / close panel attached to the front panel so as to be openable and closable;
An opening and closing mechanism for opening and closing the opening and closing panel between a closing position for closing the intake opening of the front panel and an opening position opened to the front side so as to tilt forward with respect to the front panel;
With
The opening and closing mechanism includes a slide rail extending in the vertical direction provided on both sides of the front panel;
A fixed pivot portion provided above the slide rail;
A slider provided slidably along the slide rail and having a movable pivot portion and a rack gear;
An upper pivot portion and a lower pivot portion provided on both sides of the open / close panel;
An upper link connecting the fixed pivot part and the upper pivot part;
A lower link shorter than the upper link connecting the movable pivot part and the lower pivot part;
An intermediate link connecting the intermediate pivot portion provided in the intermediate portion of the upper link and the movable pivot portion;
A drive unit having a pinion gear meshing with the rack gear of the slider;
Air conditioner equipped with.   2. The air conditioner according to claim 1, wherein the driving unit is installed on the main body casing side, and the pinion gear of the driving unit meshes with the rack gear when the front panel is closed with respect to the main body casing.   The slider is movable relative to the movable pivot portion in a sliding direction of the slider, and is urged by a biasing portion to a neutral position within a range of relative movement with the movable pivot portion. Air conditioner as described in.   The air conditioner according to any one of claims 1 to 3, further comprising: a lock mechanism that locks an opening / closing operation of the opening / closing panel with respect to the front panel when the front panel is opened with respect to a front surface of the main body casing. . The locking mechanism is
Hook through holes drilled in the front panel;
An annular hook projecting on the rear side of the open / close panel and inserted through the hook through-hole when the open / close panel is in the closed position;
Provided on the rear surface side of the front panel, and slides between a locked position where the front end portion protrudes so as to overlap the hook through hole and an unlock position where the front end portion does not overlap the hook through hole. A slant cam is formed on the side, and the heel member constantly biased to the lock position side,
When projecting from the front surface of the main body housing and the front panel is closed with respect to the front surface of the main body housing, the abutting member is brought into contact with the inclined cam, and the collar member is moved to the unlock position side. Release protrusion to slide to,
The air conditioner according to claim 4, comprising:   A support lever that is spanned between the front panel and the front surface of the main body housing to keep the front panel open when the front panel is opened relative to the front surface of the main body housing; The air conditioner according to any one of claims 1 to 5, wherein the air conditioner is rotatably provided on a front surface of the main body casing.   The air conditioner according to claim 6, wherein a drawer hook is provided on a rear surface side of the front panel to pull out the support lever to a functional position when the front panel opens with respect to a front surface of the main body casing.

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