JP2006207889A - Movable panel opening and closing mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a movable panel opening and closing mechanism, lowering the cost and saving the space for the open opening and closing mechanism by driving a movable panel with a driving motor of a smaller size. <P>SOLUTION: The movable panel 6 is attached to the front of a body 1, which is a casing, through the movable panel opening and closing mechanism K to open and close a front suction port by stages. The movable panel opening and closing mechanism includes a driving motor 20, a driving shaft 21 and a link mechanism body 22. The link mechanism body includes: a fixed link 25 fitted to the body; a driving link 26 connected to the driving shaft with one end part thereof rotatably supported on the fixed link; a first driven link 27, one end part of which is rotatably supported; a second driven link 28 integrated with the movable panel, to which the driven link and the other end part of the driven link are rotatably connected; a coil spring 29 pulling the first driven link in the reverse direction to the dead load direction of the movable panel; a stopper 33 for regulating the rotation of the first driven link; and an auxiliary link mechanism 30 for projecting the second driven link end forward and keeping the same in an inclined attitude so that the upper end e of the movable panel is projected forward beyond the lower end d. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement of a movable panel opening / closing mechanism that covers a front surface of an opening of a casing that forms a ventilation path in the casing such as an indoor unit of an air conditioner so as to be freely opened and closed.

  For example, in an indoor unit of an air conditioner, a ventilation path in which a heat exchanger and a blower constituting a refrigeration cycle are arranged is formed in an indoor unit body that is a casing. A main body opening formed on the upstream side of this ventilation path, that is, a suction port on the front surface of the indoor unit main body, is attached with a panel for shielding the inside of the main body from the room through the front suction port.

For example, as disclosed in [Patent Document 1], this panel can be opened and closed with respect to the indoor unit main body so that a filter interposed between the front suction port and the front panel can be easily attached and detached. Installed. Furthermore, as shown in [Patent Document 2], the panel is mounted so as to be openable and closable via a driving mechanism, and the panel is separated from the front surface of the suction port during operation so that air can be sucked from the front suction port. A harmony machine has also been proposed.
Utility Model Registration No. 2539585 JP 2000-234760 A

  By the way, the front panel described in the above-mentioned [Patent Document 1] is attached to the front surface of the indoor unit main body through a four-bar link opening / closing mechanism, and is in close contact with the front surface of the indoor unit main body at the time of stoppage and operation. When the filter is replaced, the indoor unit body is fully opened. In other words, the front panel is limited to only the fully closed or fully opened positions, and the opening degree cannot be adjusted such as being fixed at an intermediate position.

  In [Patent Document 2] described above, the drive mechanism for driving the opening / closing body is a combination of a drive motor and a link mechanism, and the drive motor directly drives the link mechanism. Therefore, the driving torque for driving the front panel via the opening / closing body becomes large, and the enlargement of the driving motor is inevitable, and the link mechanism itself is rugged and requires a large space for mounting. End up.

  The present invention has been made by paying attention to the above circumstances, and the object of the present invention is to reduce the driving torque for driving the movable panel and to reduce the cost by using a smaller driving motor. An object of the present invention is to provide a movable panel opening / closing mechanism that can save space.

In order to achieve the above object, the present invention provides an opening on the upstream side of the ventilation path formed in the housing, and changes the opening of the movable panel that covers the front of the opening so as to be openable and closable. As a movable panel opening and closing mechanism to be obtained, it is composed of a drive motor attached to the main body side, a drive shaft connected to the drive motor, and a pair of link mechanism bodies connected to the drive shaft,
The link mechanism includes a fixed joint attached to the main body side, a drive joint whose one end is rotatably supported on the upper part of the fixed joint and connected to the end of the drive shaft, and one end on the lower part of the fixed joint. The first driven node that is rotatably supported, the other end of the drive node, and the other end of the first driven node are pivotally connected to each other at a predetermined interval to be integrated with the movable panel. The second follower, and at least one of the drive follower and the first follower, and the fixed follower are stretched to elastically actuate the drive follower or the first follower in the direction opposite to the weight direction of the movable panel. And an elastic body that pulls up and a stopper that is provided on the fixed node and restricts further rotation of the first driven node at a position where the drive node and the first driven node protrude in a substantially perpendicular state with respect to the fixed node. And the drive node is provided between the end portions of the drive node and the second driven node, and the drive node is approximately the fixed node. And an auxiliary link mechanism for causing the second driven node end portion to protrude forward by further rotating the drive node from the angular position and holding the movable panel upper end in an inclined posture protruding forward from the lower end. .

  According to the present invention, it is possible to reduce the cost of the drive motor and to obtain an effect such as obtaining space saving of the movable panel opening / closing mechanism.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. For example, a movable panel opening / closing mechanism for a movable panel that is provided in an indoor unit of an air conditioner and opens and closes a front air inlet is applied.
FIG. 1 schematically shows a cross section of an indoor unit of an air conditioner. In the figure, reference numeral 1 denotes an indoor unit main body, which is a casing, and is composed of a front panel 1A that is curved in a side view, and a rear plate portion 1B in which an upper surface portion, a lower surface portion, and left and right side portions are substantially flat. Is done. A top suction port 2 is provided on the upper surface of the rear plate portion 1B, a front suction port 3 is provided on the upper side of the front panel 1A, and a blowout port 4 is opened between the lower portion of the front panel 1A and the lower front portion of the rear plate portion 1B. The

  A grill 5 is fitted into the upper surface suction port 2, and the upper surface suction port 2 is always open. The upper end portion of the front panel 1A is rotatably supported on the front upper end of the rear plate portion 1B via a hinge portion (not shown) here, and the lower end portion can be opened and closed with respect to the rear plate portion 1B. The front suction port 3 provided in the front panel 1A is opened and closed by a movable panel 6 attached to the front panel 1A via a panel opening / closing mechanism (panel opening / closing means) K described later. The outlet 4 can be opened and closed by two outlet louvers 7A and 7B that are individually controlled to rotate.

  In the indoor unit main body 1, a heat exchanger 9 formed in a substantially inverted V shape by the front heat exchanger portion 9A and the rear heat exchanger portion 9B is disposed. The front heat exchanger section 9A is curved substantially parallel to the front panel 1A and the movable panel 6 with a gap. The rear heat exchanger section 9 </ b> B is straight and inclined obliquely and faces the upper surface inlet 2.

  An electric dust collector 10 is attached to the front side of the front heat exchanger portion 9A of the heat exchanger 9. The electric dust collector 10 can be operated not only as an original dust collecting operation but also as an ozone generator. A filter 11 is interposed between the front heat exchanger portion 9A and the rear heat exchanger portion 9B, and the front suction port 3 and the upper suction port 2. The filter 11 can be easily inserted into and removed from the indoor unit body 1 by opening the front panel 1A together with the movable panel 6.

  A blower 12 is disposed between the front and rear heat exchanger portions 9A and 9B of the heat exchanger 9 and facing the outlet 7. The blower 12 has an axial dimension that is substantially the same as the width dimension of the heat exchanger 9, and includes a cross-flow fan disposed facing the heat exchanger 9 and a fan motor that rotationally drives the cross-flow fan. Is done.

The lower end portion of the front heat exchanger portion 9A is placed on the front drain pan 13a, and the lower end portion of the rear heat exchanger portion 9B is placed on the rear drain pan 13b, and is dripped from the respective heat exchanger portions 9A and 9B. It receives water and can drain to the outside through a drain hose (not shown). Further, the outer surfaces of the side walls of the front and rear drain pans 13a and 13b are provided at positions close to the blower 12, and these constitute a nose n for the fan of the blower 12.
A partition wall member 14 connects the side wall portions of the front and rear drain pans 13a and 13b constituting the nose n and each side portion of the outlet 4. A space surrounded by the partition wall member 14 is a blowout air passage 15 that communicates the nose n and the blowout port 4.

Next, the movable panel opening / closing mechanism K for opening and closing the movable panel 6 will be described in detail.
FIG. 2 is a front view of the front panel 1A provided with a part of the movable panel opening / closing mechanism K, and FIG. 3 is an exploded perspective view of the main part of the movable panel opening / closing mechanism K.
First, in detail from the front panel 1A, the left and right side portions and the upper end portion are left in a frame shape, and the front suction port 3 including a plurality of openings is formed on the upper side. The small opening a on the right side is opened to face an electric component box (not shown). The lower end portion is cut out in a concave shape leaving both left and right side portions, and the blowout port 4 is formed by this portion.

Further, the hinge part b is provided at the upper left and right ends of the front panel 1A, and the front panel 1A is rotatable with respect to the rear plate part 1B with this point as a fulcrum. A hooking portion (not shown) is provided at the lower left and right sides, and is freely detachable from the rear plate portion 1B.
For such a front panel 1A, the movable panel opening / closing mechanism K is composed of a drive motor 20, a drive shaft 21 connected to the drive motor 20 via a speed reduction mechanism G, a plurality of link members, and the like. And a link mechanism 22. The link mechanism 22 is connected to both left and right ends of the drive shaft 21 and is provided as a pair.

  The drive motor 20 is attached to an outer surface portion of a gear case (not shown), and the gear case itself is attached and fixed to a predetermined portion of the rear plate portion 1B. In the gear case, a drive gear 23A fitted and fixed to the rotation shaft of the drive motor 20 and a driven gear 23B meshing with the drive gear 23A are housed, and a speed reduction mechanism G is constituted by these. A connecting hole having a polygonal cross section (not shown) is provided along the central axis of the driven gear 23B, and is exposed from the gear case.

  On the other hand, a first bevel gear 24A is fitted and fixed to the drive shaft 21, and a second bevel gear 24B meshes with the first bevel gear 24A. These first and second bevel gears 24A and 24B are accommodated in an auxiliary case S shown only in FIG. 2, and the auxiliary case S is attached to the front panel 1A. A projection (not shown) that is integrally provided on the side surface of the second bevel gear 26 protrudes from a part of the auxiliary case S. This protrusion has a sharp tip and a polygonal cross section, and exactly matches the cross sectional shape of the connecting hole provided in the driven gear 23B.

  In the normal position where the front panel 1A constitutes the front portion of the indoor unit body 1, the protrusion provided on the second bevel gear 24B on the drive shaft 21 side is connected to the driven gear 23B on the drive motor 20 side. It is inserted into the hole for engagement. Therefore, the rotational driving force of the drive motor 20 is decelerated by the speed reduction mechanism G composed of the drive gear 23A and the driven gear 23B, and then through the projection of the driven gear 23B and the connection hole of the second bevel gear 24B. The drive shaft 21 is integrated with the first bevel gear 24A so that the drive shaft 21 can be driven to rotate.

  In this manner, the drive motor 20 and the drive shaft 21 are configured such that the protrusion of the driven gear 23B and the connection hole of the second bevel gear 24B are mechanically connected and separated. When the front panel 1A is opened with respect to the rear plate 1B together with the movable panel 6 such as when the filter 11 is replaced, the protrusion easily escapes from the connection hole, and the drive motor 20 and the drive shaft 21 are connected. Is released. When the front panel 1A is closed together with the movable panel 6 again, the protrusions are inserted into and engaged with the connection holes, and the mechanically coupled state between the drive motor 20 and the drive shaft 21 is restored.

The drive shaft 21 is formed in a rectangular cross section over the entire length, and both end portions thereof are engaged with the link mechanism body 22.
Although the link mechanism 22 will be described in detail again, the outline of the configuration is that a fixed joint 25 attached to the surface of the front panel 1A and connected to the drive shaft 21, and one end portion thereof are rotatably connected to the fixed joint 25. Drive node 26, a first driven node 27 that is rotatably connected to a fixed node 25 portion having a predetermined distance from the drive node 26, and the other end of the drive node 26 attached to the back surface of the movable panel 6. This is a parallel four-link mechanism that includes a second follower 28 that is rotatably connected to the other end of the first follower 27 and the first follower 27.

A coil spring 29, which is an elastic body and a tension spring, is adjusted between the fixed node 25 and the first driven node 27, and an elastic force is urged so that the distance between them is close. An auxiliary link mechanism 30 is provided between the drive node 26 and the second driven node 28.
As shown in FIG. 1 again, the indoor unit of an air conditioner configured as described above is provided in the front panel 1A in a state where the movable panel 6 is superimposed on the front panel 1A when stopped. The front suction port 3 is closed. Therefore, no dust enters the interior of the indoor unit body 1 from the front suction port 3. The outlet 4 is also closed by the two outlet louvers 7A and 7B, preventing dust from entering the main body 1 and causing various problems.

4 is a schematic cross-sectional view of the indoor unit in which the movable panel 6 is in a half-open state, FIG. 5 is a perspective view of the indoor unit in the middle of the fully-opened state in the movable panel 6, and FIGS. 6 (A) and 6 (B) are movable panels. 6 is a schematic cross-sectional view of the indoor unit 6 in the fully open state and in the fully open state.
When the operation switch of the remote control is switched on, the opening posture of the movable panel 6 differs depending on the selection of the operation mode.
That is, when the dehumidifying operation mode is selected, or when the internal drying operation mode of the indoor unit body 1 is selected, the movable panel 6 is half open with respect to the front suction port 3 of the front panel 1 as shown in FIG. It becomes a state.

  At this time, the refrigerant evaporates in the heat exchanger 9, and the air volume of the blower 12 is suppressed to be extremely small. The heat exchange air blown out from the blowout port 4 is extremely small, and the rotation angle of the blowout louver 7A on the upper side and the blowout louver 7B on the lower side is slight, so that the heat exchange air is moved from the blowout port 4 to the movable panel. 6 is blown up along the front side and the back side.

Then, the air is sucked into the interior of the indoor unit body 1 from the upper side of the upper surface suction port 2 from the upper end of the movable panel 6 and the upper side of the front surface suction port 3 in a half-open state, and exchanges heat with the heat exchanger 9 again. The heat exchange air circulates in front of the indoor unit main body 1 in a short circuit state without being blown into the room from the blowout port 4.
Therefore, the dehumidifying action is performed in a state where the indoor occupant does not receive cold air, and comfortable air conditioning is obtained. Alternatively, drain water droplets adhering to the heat exchanger 9, the drain pans 13a, 13b, the ventilation path 15 and the like are quickly evaporated to dry the inside of the main body 1 to prevent the occurrence of mold.

When the cooling operation mode or the heating operation mode is selected, the movable panel 6 goes through the previous stage as shown in FIGS. 5 and 6A and is fully opened as shown in FIG. 6B.
At this time, both the blowout louvers 7A and 7B provided at the blowout port 4 are set to rotate larger than when they are both in the half-open state. Specifically, when the cooling operation mode is selected, the blowout louvers 7A and 7B are almost directed in the horizontal direction so that cold air is not directly applied to the resident. When the heating operation mode is selected, the blowout louvers 7A and 7B are directed almost directly below, and hot air is blown out to the occupant's feet so as to generate so-called head cold foot heat.

The pre-stage posture and the fully open state posture of the movable panel 6 are obtained based on the action of the movable panel opening / closing mechanism K.
6A, the movable panel 6 front stage posture is such that the drive node 26 and the first driven node 27 of the link mechanism body 22 constituting the movable panel opening / closing mechanism K protrude forward to the maximum (front side). The movable panel 6 itself has moved upward from the position where the front inlet 3 shown in FIG. 1 is completely closed and the half-open position shown in FIG.

  In the fully open posture of the movable panel 6 in FIG. 6B, the lower end d position of the movable panel 6 is hardly changed from the previous stage posture position by the action of the link mechanism 22, and only the upper end e position of the movable panel 6 is forward ( Project to the front side. Therefore, the posture of the movable panel 6 is largely tilted forward as compared with the previous stage, and the distance between the upper end e of the movable panel 6 and the upper portion of the front panel 1A is maintained in a larger state.

  Cooling operation or heating operation is performed, and indoor air is guided into the indoor unit body 1 from the upper surface inlet 2 and the front surface inlet 3. At this time, since the upper end e of the movable panel 6 is further away from the front panel 1A, a larger amount of room air is sucked into the indoor unit main body 1 from the front suction port 3 and the upper surface suction port 2 to exchange heat. Guided to vessel 9. Therefore, a sufficient air volume can be secured, the residence area of the suction air flow into the heat exchanger 9 can be reduced, and the heat exchange efficiency and the air conditioning performance can be improved.

  When the operation switch of the remote control is turned off to end the air conditioning operation, the refrigeration cycle operation is ended, the operation of the blower 12 and the electric dust collector 10 is stopped, and the movable panel opening / closing mechanism K moves the movable panel 6 backward. As shown in FIG. 1 again, the front suction port 3 is closed because it is brought into close contact with the front panel 1A.

Next, the configuration and operation of the link mechanism 22 at each posture of the movable panel 6 will be described in detail.
FIG. 7 is a diagram for explaining the link mechanism body 22 that closes the front suction port 3 with the movable panel 6, and FIG. 8 is a diagram for explaining the link mechanism body 22 with the movable panel 6 in a half-open state. FIG. 10 is a diagram illustrating the link mechanism body 22 in a previous stage immediately before the movable panel 6 is completely opened, and FIG. 10 is a diagram illustrating the link mechanism body 22 that completely opens the movable panel 6.

  As shown in FIG. 3, the fixed joint 25 constituting the link mechanism body 22 has a long front view that is long in the vertical direction, is formed in a substantially U shape in plan view, and is appropriately formed on the surface of the front panel 1A. It is fixed by simple means. A first gear 31 is rotatably supported between both sides of the upper end of the fixed node 25.

  The first gear 31 is formed only on one side of the fixed node 25, and the remaining portion forms a cylindrical body. A support portion is provided on the side surface of the first gear 31, and this and the end of the cylindrical body are rotatably supported on both side portions of the fixed node 25. A rectangular hole f is provided along the axis of the first gear 31, and the end of the drive shaft 21 is detachably engaged with the hole f.

The first gear 31 is engaged with a semicircular gear portion 26 a provided integrally with an end portion of the drive node 26. The drive node 26 is formed by opposing a pair of plate portions that are bent in a substantially U shape in a side view, and a plurality of reinforcing bars are installed between these plate portions.
The drive node 26 is designed to be inserted between both side portions of the fixed node 25, and the center shaft portion of the gear portion 26 a is rotatably supported on both side portions of the fixed node 25. The other end of the drive node 26 is rotatably supported by the second driven node 28, and the auxiliary link mechanism 30 is provided across the ends of the drive node 26 and the second driven node 28.

  The first follower node 27 is formed in a straight shape and has substantially the same length and width as the drive node 26. One end of the first follower 27 is rotatably supported by the fixed joint 25, and the other end is inserted into the lower portion of the second follower 28 and is rotatably supported. A triangular projecting piece 32 is integrally provided at a substantially intermediate portion of the first driven node 27, and one end of the coil spring 29, which is an elastic body, is hooked.

  The other end of the coil spring 29 is hooked to the fixed joint 25, and the hooking position is set between the pivot of the drive joint 26 and the pivot of the first follower 27. The coil spring 29 is a tension spring and elastically applies an urging force so as to rotate in the direction in which the first driven node 27 is lifted with respect to the fixed node 25 (clockwise direction in the figure).

  As described above, the link mechanism body 22 is configured as a parallel four-link mechanism in which the fixed node 25 and the second driven node 28 face each other, and the drive node 26 and the first driven node 27 face each other. When the first follower 27 is urged to rotate by the elastic force of the coil spring 29, the second follower 28 is moved and displaced in a parallel state with respect to the fixed joint 25. Therefore, the follower 27 is moved and displaced in a parallel state.

As shown in FIGS. 8 to 10, stoppers 33 are provided at predetermined portions on both sides of the fixed node 25, and the first driven node 27 is displaced at a substantially right angle with respect to the fixed node 25. , Further rotation is restricted.
The auxiliary link mechanism 30 provided over the drive node 26 and the second driven node 28 is configured as described below.

  First, the second follower node 28 will be described. The second follower node 28 has a plurality of reinforcing bars between long plate portions having a vertical dimension smaller than the fixed node 25 and a narrow width dimension in a side view. Is built. Both side portions of the upper portion of the second follower node 28 are integrally projected on the fixed node 25 side, and a guide groove 35 formed in a substantially U shape is provided therein.

The end portion of the drive node 26 is inserted between the projecting portions of the second follower node 28, and guide pins 36 that engage with the guide groove 35 are integrally projected on both side surfaces of the end portion. An auxiliary drive node 37 is installed between the drive node 26 and the second driven node 28.
In other words, one end portion of the auxiliary drive node 37 is rotatably supported by a part on the side of the semicircular gear portion 26a with respect to the guide pin 36 provided in the drive node 26, and the other end portion of the auxiliary drive node 37. Is rotatably supported above the position where the guide groove 35 of the second driven node 28 is provided.

  With the above configuration, the guide pin 36 of the drive node 26 can move in the guide groove 35 of the second driven node 28 in accordance with the attitude of the drive node 26. Then, according to the position of the guide pin 36 in the guide groove 35, the angle formed by the drive node 26 with respect to the fixed node 25 and the angle formed by the auxiliary drive node 37 with respect to the drive node 26 are changed.

  That is, as shown in FIG. 7, when the drive node 26 is rotated downward and is in close contact with the fixed node 25, the guide pin 36 is positioned at the end of the short side of the guide groove 35. In addition, the auxiliary drive joint 37 is folded at an acute angle with the drive joint 26. Accordingly, at this time, the second follower 28 is inserted into the fixed joint 25 together with the drive joint 26 and the first follower 27 and is folded.

  As shown in FIG. 8, when the drive joint 26 and the first follower 27 rotate in parallel with each other by a slight amount, and the second follower 28 slightly protrudes from the fixed joint 25, the guide pin 36 is The auxiliary drive node 37 is bent at an acute angle that is larger than the state of FIG. It should be noted that the second follower node 28 has escaped from the fixed node 25, but the interval between them is extremely narrow and parallel to each other.

  As shown in FIG. 9, when the driving node 26 and the first driven node 27 protrude in a state of being substantially perpendicular to the fixed node 25, the guide pin 36 has a letter-like shape toward the guide groove 35. Located at the top, the auxiliary drive node 37 is inclined at an obtuse angle with respect to the drive node 26. At this time, the 21st follower 27 comes into contact with the stopper 33 provided in the fixed joint 25, and further rotation is restricted.

  As shown in FIG. 10, when only the drive node 26 continues to rotate and the outermost side portion of the semicircular gear portion 26 a meshes with the first gear 31, the guide pin 36 moves into the guide groove 35. Move to the end of the long side. Thus, the end portion of the guide groove 35 has a stopper function for restricting further rotation of the drive node 26. At the same time, the auxiliary drive joint 37 is rotated to have a larger obtuse angle with respect to the drive joint 26, which is almost a straight relationship.

Next, the position of the movable panel 6 relative to the front panel 1A and the operation of the link mechanism 22 on the movable panel 6 will be described.
As shown in FIG. 7 again, when the operation is stopped, the movable panel 6 comes into close contact with the front panel 1A and closes the front suction port 3. At this time, the drive motor 20 constituting the movable panel opening / closing mechanism K is stopped, and the drive joint 26 and the first follower 27 are rotated downward and inserted into the fixed joint 25 together with the second follower 28. They are in close contact with each other and in an integrated state. In the auxiliary link mechanism 30, the guide pin 36 is positioned at the end of the short side of the guide groove 35, and the auxiliary drive node 37 is folded in close contact with the drive node 26.

  As shown in FIG. 8 again, during the dehumidifying operation or the in-body drying operation, the movable panel 6 is in a half-open state in which the movable panel 6 is slightly separated from the front panel 1A, and the heat exchange air blown from the outlet 4 is transferred to the movable panel 6. As described above, forming a so-called short circuit led along the path.

  In the movable panel opening / closing mechanism K, the drive motor 20 stops after the start of driving. The drive shaft 21 rotates, the drive node 26 rotates through the first gear 31 provided at this end, and the first driven node 27 is rotated while being held parallel to the drive node 26, Stops at a position slightly separated from the fixed joint 25. With these rotations, the second follower node 28 and the movable panel 6 are lifted and slightly separated from the fixed node 25 and the front panel 1A.

  At this time, the rotation direction of the first driven node 27 coincides with the direction in which the elastic force of the coil spring 29 stretched between the fixed node 25 and the first driven node 27 acts. On the other hand, the weight of the movable panel 6 is applied to the movable panel opening / closing mechanism K. In other words, the second driven node 28 is attached to and integrated with the movable panel 6, and the total weight of these is applied to the drive node 26 and the first driven node 27.

  The direction in which the movable panel 6 and the second driven node 28 are subjected to their own weight is opposite to the direction in which the elastic force of the coil spring 29 acts. Therefore, the output of the drive motor 20 may be only the power of the difference between the total weight of the movable panel 6 and the second driven node 28 and the elastic force of the coil spring 29. The drive motor 20 can be a small one with a small drive torque, and cost can be reduced.

  When the cooling operation mode or the heating operation mode is selected, the inclination postures of the louvers 7A and 7B of the outlet 4 are set accordingly. The movable panel 6 is substantially in parallel with the front panel 1A shown in FIG. 6A directly from the state in which the front suction port 3 is closed by being in close contact with the front panel 1A shown in FIG. 1 or from the half-open state shown in FIG. 6B, the upper end e shown in FIG. 6B is inclined forward (front side). At this time, the link mechanism 22 constituting the movable panel opening / closing mechanism K reaches the state shown in FIG. 10 through the state shown in FIG.

  As shown in FIG. 9 again, when the drive motor 20 rotates and drives the drive shaft 21, the drive node 26 and the first driven node 27 are rotated with respect to the fixed node 25 and become substantially horizontal. Only one driven node 27 is restricted from rotating by the stopper 33. The guide pin 36 at the tip of the drive node 26 is located at the top of the guide groove 35 provided in the second driven node 28.

  As described above, since the direction in which the total weight of the movable panel 6 and the second driven node 28 is applied is opposite to the direction in which the elastic force of the coil spring 29 acts, the output of the drive motor 20 is movable. Only the power of the difference between the total weight of the panel 6 and the second driven node 28 and the elastic force of the coil spring 29 is sufficient, and the drive motor 20 can be a small one with a small drive torque, resulting in cost reduction. It is done.

  The movable panel 6 is separated from the front panel 1A while being substantially parallel to each other, and a sufficient space is secured between them. However, the drive motor 20 continues to be driven and the drive shaft 21 continues to rotate. The first follower 27 is already restricted from rotating by the stopper 33, but the rotation restricting means is not configured for the drive 26, so that only the drive 26 is rotated.

  As shown in FIG. 10 again, the tip of the drive node 26 is rotated and displaced toward the fixed node 25 beyond the substantially horizontal posture of FIG. The guide pin 36 provided at the tip of the drive node 26 is displaced from the top of the guide groove 35 provided in the second driven node 28 to the long side portion, and finally reaches the end portion of the long side portion.

  One end portion of the auxiliary drive node 37 constituting the auxiliary link mechanism 30 is rotatably supported at a portion near the tip of the drive node 26, and one end portion of the auxiliary drive node 37 is rotated with the rotation of the drive node 26. Rotate. Since the other end portion of the auxiliary drive node 37 is rotatably supported by the second driven node 28, the auxiliary drive node 37 and the second driven node 28 are not changed in relative position without changing the relative position. The joint 37 changes into a substantially straight posture with the drive joint 26.

  That is, when the drive node 26 is lifted from FIG. 9 and rotated in the clockwise direction to become FIG. 10, the auxiliary drive node 37 is driven with the pivotal portion with respect to the second driven node 28 as a fulcrum as the drive node 26 rotates. The lower end pivotally supported by the node 26 rotates counterclockwise. Since the position of the pivot portion g of the first driven node 27 in the second driven node 28 is fixed, and the guide pin 36 moves along the guide groove 35 as the drive node 26 rotates, the second driven node The joint 28 is pushed by the guide pin 36 and inevitably tilts forward (front side).

In the movable panel 6 integrated with the second follower node 28, the lower end d hardly changes from the position of FIG. 9, whereas the upper end e position is inclined forward (front side). Therefore, the opening area of the front suction port becomes large, and more heat exchange air can be sucked.
By providing such an auxiliary link mechanism 30, the entire length of the drive node 26 can be matched with the entire length of the first driven node 27, and the configuration of the parallel 4-link mechanism can be maintained and its operation can be maintained. In addition, the second driven joint 28 and the movable panel 6 can be inclined by the length of the auxiliary drive joint 37. As a result, the number of parts is minimal, and the mechanism can be configured without increasing the space of the mechanism, thus realizing a mechanism that can set the panel position according to each operation mode with an inexpensive and compact configuration. can do.

In addition, although the 2nd follower node 28 was comprised separately from the movable panel 6, it is not limited to this, The side part which comprises the 2nd follower node 28 is integrally formed in a part of the movable panel 6 You may make it project.
Further, the present invention is not limited to the above-described embodiment as it is, and can be applied to a structure for operating a movable panel of a ventilator in addition to an air conditioner. In the implementation stage, the constituent elements can be modified and embodied without departing from the scope of the invention. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

The schematic sectional drawing of the air conditioner indoor unit based on Embodiment of this invention. The front view of the front panel based on the embodiment. The disassembled perspective view of the principal part of the movable panel opening / closing mechanism according to the embodiment. The schematic sectional drawing of the indoor unit of the half open state of a movable panel based on the embodiment. The perspective view of the indoor unit in the state of the full open of the movable panel based on the embodiment. The schematic sectional drawing of the indoor unit of the full open state of a movable panel based on the embodiment, and a full open state. Sectional drawing of the link mechanism body at the time of closing of a movable panel based on the embodiment. Sectional drawing of the link mechanism body at the time of the half opening of the movable panel based on the embodiment. Sectional drawing of the link mechanism body in the middle of full opening of the movable panel based on the embodiment. Sectional drawing of the link mechanism body at the time of the fully open of the movable panel based on the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 9 ... Heat exchanger, 12 ... Blower, 3 ... Front suction port, 4 ... Outlet port, 1 ... Indoor unit main body, K ... Panel opening / closing mechanism, 6 ... Movable panel, 20 ... Drive motor, 21 ... Drive shaft, 22 ... Link mechanism body 25... Fixed node 26. Drive node 27. First driven node 28. Second driven node 29. Coil spring (elastic body) 33. Stopper, 30 auxiliary link mechanism 37 ... Auxiliary drive nodes, 36 ... guide pins, 35 ... guide grooves.

Claims (2)

In the movable panel opening and closing mechanism that provides an opening on the upstream side of the ventilation path configured in the housing, and obtains a change in opening degree of the movable panel that covers the front surface of the opening so as to be openable and closable.
The movable panel opening and closing mechanism is
A drive motor attached to the main body,
A drive shaft coupled to the drive motor;
It is composed of a pair of link mechanisms connected to the drive shaft,
The link mechanism is
A fixed joint attached to the main body,
One end of the fixed node is rotatably supported, and the drive node is connected to the end of the drive shaft.
A first driven node having one end rotatably supported at a lower portion of the fixed node;
The other end of the drive node and the other end of the first driven node are pivotally connected to each other at a predetermined interval, and a second driven node integral with the movable panel;
It is stretched between at least one of the drive node and the first driven node and the fixed node, and elastically pulls the drive node or the first driven node in the direction opposite to the direction of its own weight of the movable panel. An elastic body,
A stopper provided on the fixed node, which restricts further rotation of the first driven node at a position where the drive node and the first driven node protrude in a substantially perpendicular state with respect to the fixed node;
The second driven node end is provided between the ends of the drive node and the second driven node, and the drive node further rotates from the position where the drive node is substantially perpendicular to the fixed node. A movable panel opening and closing mechanism comprising: an auxiliary link mechanism that protrudes forward and holds the upper end of the movable panel in an inclined posture that projects forward from the lower end. The auxiliary link mechanism is
An auxiliary drive node having one end rotatably supported by the end of the drive node and the other end rotatably supported by the end of the second follower;
A guide pin protruding between the support section and the tip of the auxiliary drive section in the drive section;
A guide groove provided in the second driven node and formed in a substantially U-shape in which the guide pin is movably engaged,
When the drive node is substantially perpendicular to the fixed node, the guide pin is at the top of the guide groove and the auxiliary drive node is inclined at a predetermined angle with respect to the drive node, and the drive node is further rotated. As a result, the guide pin is positioned at the long side end of the substantially U-shape of the guide groove, and the auxiliary drive node becomes substantially straight with the drive node, so that the upper end of the second driven node protrudes forward. The movable panel opening / closing mechanism according to claim 1, wherein:

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