Lifting devices, panel assemblies and air conditioners

Abstract

The present invention discloses a lifting device, a panel assembly and an air conditioner, and relates to the technical field of air conditioning equipment, wherein the lifting device includes a base, a driving mechanism, a pressure plate mechanism and an elastic mechanism, the driving mechanism includes a motor, a roller and a pressure wheel, the motor is fixedly connected to the base, the roller and the pressure wheel are arranged at intervals, the motor is connected to the roller and the pressure wheel in a transmission manner to drive the roller and the pressure wheel to rotate; the pressure plate mechanism includes a hinge, a first pressure plate and a second pressure plate, the hinge can rotate relative to the base, the first pressure plate and the second pressure plate are connected to the hinge, and a space for a traction rope to pass through is formed between the first pressure plate and the pressure wheel; the elastic mechanism is fixedly connected to the base, and the end of the elastic mechanism abuts against the second pressure plate. The present invention can solve the problem that the traction rope cannot be normally retracted and unreeled when it is not under stress, and improves the stability of the retracting and unreeling operation of the lifting device.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a lifting device, a panel assembly and an air conditioner. Background Art

[0002] Embedded air conditioners such as duct units are usually installed on suspended ceilings or ceilings, so it is not convenient to clean the panel, especially the air inlet grille and filter. In the related art, the duct unit uses a roller that winds the traction rope to control the retraction and release of the traction rope to control the lifting and lowering of the panel, so that the user can easily clean the panel. However, since the panel usually adopts a multi-traction rope suspension drive, when the movement of the multiple traction ropes is not synchronized, some of the traction ropes will not be able to be retracted and released normally due to being in a stress-free state, and then there will be problems such as slack, movement, and rope skipping, causing the panel to shift and flip, and in severe cases, the traction ropes will be entangled and stuck. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a lifting device that can effectively solve the problem that the traction rope cannot be normally retracted and unreeled when it is in a state without stress.

[0004] The present invention also provides a panel assembly having the lifting device.

[0005] The present invention also provides an air conditioner having the panel assembly.

[0006] According to the first aspect of the present invention, the lifting device comprises: a base; a driving mechanism, comprising a motor, a roller and a pressure wheel, the motor is fixedly connected to the base, the roller and the pressure wheel are spaced apart, the motor is in transmission connection with the roller and the pressure wheel to drive the roller and the pressure wheel to rotate; a pressure plate mechanism comprises a hinge part, a first pressure plate and a second pressure plate, the hinge part can rotate relative to the base, the first pressure plate and the second pressure plate are connected to the hinge part, and a space for the traction rope to pass through is formed between the first pressure plate and the pressure wheel; an elastic mechanism is fixedly connected to the base, and the end of the elastic mechanism abuts against the second pressure plate.

[0007] The lifting device according to the embodiment of the present invention has at least the following beneficial effects:

[0008] By arranging a pressure wheel, a pressure plate mechanism and a matching component of an elastic mechanism at the rope outlet of the roller for winding the traction rope, the pressure plate mechanism can rotate relative to the base, the pressure wheel is driven by a motor and forms a space for the traction rope to pass through the first pressure plate, and the end of the elastic mechanism abuts against the second pressure plate and provides supporting force; when the traction rope is subjected to force, the traction rope is pressed toward the first pressure plate and guided to be retracted and unreeled through the first pressure plate, and the second pressure plate is pressed toward the elastic mechanism, so that the elastic mechanism is compressed and has a pre-tightening force, and when the traction rope is not subjected to force, the second pressure plate is reset under the pre-tightening force of the elastic mechanism, so that the first pressure plate presses the traction rope toward the pressure wheel, and the traction rope is retracted and unreeled under the drive of the pressure wheel; this embodiment can keep the traction rope between the roller and the pressure wheel in a taut state, so that the traction rope can be retracted and unreeled in an orderly manner, thereby solving the problem that the traction rope cannot be retracted and unreeled normally when it is not subjected to force, and improving the stability of the retracting and unreeling operation of the lifting device.

[0009] According to some embodiments of the present invention, the first pressing plate is provided with a guide groove, and the width of the guide groove gradually decreases in a direction away from the roller.

[0010] According to some embodiments of the present invention, a limiting rib is provided at one end of the first pressing plate away from the roller, and the limiting rib and the first pressing plate are combined to form a channel for the traction rope to pass through.

[0011] According to some embodiments of the present invention, the hinged portion is a hinge shaft rotatably connected to the base, one end of the first pressure plate and one end of the second pressure plate are respectively fixedly connected to the hinge shaft, and the other end of the first pressure plate and the other end of the second pressure plate are connected via a connecting plate.

[0012] According to some embodiments of the present invention, the elastic mechanism is a micro switch, and a contact of the micro switch abuts against the second pressing plate.

[0013] According to some embodiments of the present invention, the driving mechanism further includes a rotating shaft and a driven wheel, the rotating shaft is fixedly connected to the driven wheel and the pressure wheel, and the roller is drivingly connected to the driven wheel.

[0014] According to some embodiments of the present invention, a first groove is provided on the side wall of the roller along the circumference of the roller, a second groove is provided on the circumferential wall of the driven wheel, and a transmission belt is sleeved between the second groove and the first groove.

[0015] According to some embodiments of the present invention, the pressure wheel includes a wheel body and pressure ribs, wherein the pressure ribs are fixedly connected to the peripheral wall of the wheel body and are arranged at intervals along the circumference of the wheel body.

[0016] According to some embodiments of the present invention, the roller is provided with a rope groove, and the rope groove includes at least one straight groove group and at least one fold line groove group extending along the circumference of the roller, each of the straight groove groups includes a plurality of straight grooves arranged at intervals along the axial direction of the roller, and each of the fold line groove groups includes a plurality of straight grooves arranged at intervals along the axial direction of the roller, and the plurality of straight grooves and the plurality of fold line grooves are sequentially connected to form a groove body extending continuously along the bottom wall of the roller.

[0017] According to some embodiments of the present invention, two of each of the straight line groove group and the fold line groove group are provided, and the straight line grooves of the two straight line groove groups are offset by 1 / 2 of the groove pitch along the axial direction of the roller.

[0018] According to some embodiments of the present invention, the arc angles of the two straight groove groups corresponding to the rollers are 3π / 4, and the arc angles of the two broken line groove groups corresponding to the rollers are π / 4.

[0019] According to some embodiments of the present invention, the rope groove further includes a first transition groove, which is disposed at the tail end of the groove body and at the side wall of the roller facing the tail end of the groove body.

[0020] According to some embodiments of the present invention, the rope groove further includes a second transition groove, and the second transition groove is provided on a side wall of the roller facing a head end of the groove body.

[0021] According to the second aspect of the present invention, the panel assembly includes a face frame provided with a mounting opening; a grille plate for being installed in the mounting opening, and a guide column is provided at one end of the grille plate facing the mounting opening; the lifting device described in the above embodiment, wherein at least two lifting devices are provided, and at least two lifting devices are spaced apart from each other on the face frame, and the lifting device is connected to the grille plate via a traction rope and is provided with a guide hole that cooperates with the guide column.

[0022] The panel assembly according to the embodiment of the present invention has at least the following beneficial effects:

[0023] The lifting device of the first aspect embodiment is used to drive the grating plate to lift and lower. The lifting device is provided with a pressure wheel, a pressure plate mechanism and an elastic mechanism at the rope outlet of the roller on which the traction rope is wound. The pressure plate mechanism can rotate relative to the base. The pressure wheel is driven by a motor and forms a space for the traction rope to pass through the first pressure plate. The end of the elastic mechanism abuts against the second pressure plate and provides supporting force. When the traction rope is subjected to force, the traction rope is pressed toward the first pressure plate and guided to be retracted and unreeled through the first pressure plate. The second pressure plate is pressed toward the elastic mechanism, so that the elastic mechanism is compressed and has a preload. When the traction rope is not subjected to force, the second pressure plate is reset under the preload force of the elastic mechanism, so that the first pressure plate presses the traction rope toward the pressure wheel, and the traction rope is retracted and unreeled under the drive of the pressure wheel. This embodiment can keep the traction rope between the roller and the pressure wheel in a taut state, so that the traction rope can be retracted and unreeled in an orderly manner, thereby solving the problem that the traction rope cannot be retracted and unreeled normally when it is not subjected to force, solving the shaking problem of the grating plate during operation, and improving the stability of the grating plate of the panel assembly during operation.

[0024] An air conditioner according to an embodiment of the third aspect of the present invention comprises the panel assembly described in the above embodiment.

[0025] The air conditioner according to the embodiment of the present invention has at least the following beneficial effects:

[0026] The panel assembly of the second aspect embodiment is adopted, and the panel assembly drives the grille plate to lift and lower by setting a lifting device. The lifting device is provided by arranging a pressure wheel, a pressure plate mechanism and an elastic mechanism at the rope outlet of the roller for winding the traction rope. The pressure plate mechanism can rotate relative to the base, and the pressure wheel is driven by a motor and forms a space for the traction rope to pass through the first pressure plate. The end of the elastic mechanism abuts against the second pressure plate and provides a supporting force; when the traction rope is subjected to force, the traction rope is pressed toward the first pressure plate and guided to be retracted and unreeled by the first pressure plate, and the second pressure plate is pressed toward the elastic mechanism, so that the elastic mechanism is compressed and has a preload force, and when the traction rope is not subjected to force, the second pressure plate is reset under the preload force of the elastic mechanism, so that the first pressure plate presses the traction rope toward the pressure wheel, and the traction rope is retracted and unreeled under the drive of the pressure wheel; this embodiment can keep the traction rope between the roller and the pressure wheel in a taut state, so that the traction rope can be retracted and unreeled in an orderly manner, thereby solving the problem that the traction rope cannot be retracted and unreeled normally when it is not subjected to force, solving the problem of the shaking of the grille plate during operation, improving the stability of the grille plate of the panel assembly during operation, and thereby reducing the failure rate of the air conditioner.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 It is a structural schematic diagram of an air conditioner according to an embodiment of the present invention, wherein the grille plate is in a state of being assembled with the face frame;

[0030] Figure 2 It is a structural schematic diagram of an air conditioner according to an embodiment of the present invention, wherein the grille plate is in a state of being detached from the face frame;

[0031] Figure 3 for Figure 2 A schematic top view of the air conditioner shown;

[0032] Figure 4 A schematic diagram of the structure of a lifting device according to an embodiment of the present invention;

[0033] Figure 5 for Figure 4 The structural schematic diagram of the lifting device shown is excluding the roller cover;

[0034] Figure 6 for Figure 4 A schematic diagram of the structure of the driving mechanism, the pressing plate mechanism and the elastic mechanism in the lifting device shown;

[0035] Figure 7 for Figure 6 An enlarged schematic diagram of a pressing plate mechanism in one embodiment;

[0036] Figure 8 for Figure 6 An enlarged schematic diagram of a partial structure of a driving mechanism of an embodiment;

[0037] Fig. 9 for Figure 4 An exploded view of the lifting device shown;

[0038] Fig.10 A schematic front view of a roller in a lifting device according to an embodiment of the present invention;

[0039] Fig.11 for Fig.10 Enlarged view of point C in the middle;

[0040] Fig.12 for Fig.10 A schematic structural diagram of an angle of the roller shown;

[0041] Fig.13 for Fig.10 A schematic structural diagram of the roller at another angle shown;

[0042] Fig.14 for Figure 2 The enlarged view of point A in the middle;

[0043] Fig.15 for Figure 3 Enlarged view of point B in the middle.

[0044] Figure Number:

[0045] Lifting device 1000; face frame 2000; mounting opening 2100; grille plate 3000; guide column 3100; air guide plate 4000;

[0046] Base 100;

[0047] Driving mechanism 200; motor 210; roller 220; first groove 221; pressing wheel 230; wheel body 231; pressing rib 232; rotating shaft 240; driven wheel 250; second groove 251; transmission belt 260; rope groove 270; linear groove group 271; linear groove 2711; folding groove group 272; folding groove 2721; first transition groove 273; second transition groove 274;

[0048] The pressing plate mechanism 300; the hinge part 310; the hinge shaft 311; the first pressing plate 320; the guide groove 321; the limiting rib 322; the first bending part 3221; the second bending part 3222; the notch 3223; the second pressing plate 330; the connecting plate 340;

[0049] Elastic mechanism 400; micro switch 410; contact 411;

[0050] Motor cover 500;

[0051] Roller cover 600;

[0052] Guide hole 700;

[0053] Towing rope 800. DETAILED DESCRIPTION

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0057] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0058] Reference Figure 1 and Figure 2 As shown, an air conditioner of an embodiment of the present invention may be an embedded air conditioner such as a duct unit, a ceiling unit, or a wall-mounted air conditioner such as a ceiling unit. In order to more clearly introduce the technical solution of this embodiment, the embodiment of the present invention is described by taking a duct unit as an example. The duct unit of the embodiment of the present invention includes a panel assembly, which is located at the lower end of the duct unit. The panel assembly includes a face frame 2000, a grille plate 3000 and an air guide plate 4000. The face frame 2000 has an air inlet (not shown in the figure) and an air outlet (not shown in the figure). The grille plate 3000 is arranged at the air inlet, and the air guide plate 4000 is arranged at the air outlet.

[0059] Since duct air conditioners are usually installed on suspended ceilings or ceilings, in order to facilitate the cleaning of the grille plate 3000, the panel assembly of the embodiment of the present invention also includes a lifting device 1000. The lifting device 1000 uses a traction rope 800 to drive the grille plate 3000 to move in the up and down directions. The traction rope 800 can be a steel wire rope, etc. One end of the traction rope 800 is fixed to the lifting device 1000, and the other end is fixed to the grille plate 3000. The lifting device 1000 can be provided with four groups. The traction ropes 800 of the four groups of lifting devices 1000 are respectively fixed to the four corners of the grille plate 3000. The four lifting devices 1000 jointly drive the grille plate 3000 so that the grille plate 3000 can be stably lowered to a height that the user can easily reach, which is convenient for the user to disassemble and clean. After cleaning, the lifting device 1000 will raise the grille plate 3000 to the air inlet, thereby meeting the normal operation requirements of the duct air conditioner.

[0060] Reference Figure 4 and Figure 5As shown, a lifting device 1000 of an embodiment of the present invention includes a base 100, a driving mechanism 200, a pressing plate mechanism 300 and an elastic mechanism 400. It can be understood that the lifting device 1000 can be fixedly connected to the face frame 2000 through the base 100. The driving mechanism 200, the pressing plate mechanism 300 and the elastic mechanism 400 are all installed on the base 100, and cooperate to realize the control of the traction rope 800, so that the traction rope 800 can be normally retracted and unreeled. The driving mechanism 200 includes a motor 210 and a roller 220, the motor 210 is fixedly connected to the base 100, and the output shaft of the motor 210 is connected to the roller 220, so as to drive the roller 220 to rotate forward or reverse; the roller 220 is used to wind the traction rope 800, and the unreeling or reeling of the traction rope 800 is realized by rotation. The driving mechanism 200 further includes a pressure wheel 230. The roller 220 and the pressure wheel 230 are arranged at intervals. The pressure wheel 230 can be arranged at the rope outlet of the roller 220 so as to avoid mutual interference. The motor 210 can drive the pressure wheel 230 to rotate by means of gear transmission, belt transmission, etc., and the specific transmission method is not specifically limited here. In order to ensure the clamping effect of the pressure wheel 230 and enable the traction rope 800 to achieve stable winding and unwinding, the linear speed of the rope outlet of the roller 220 is generally designed to be the same as the linear speed of the clamping part of the pressure wheel 230.

[0061] Reference Figure 6 and Figure 7 As shown, it can be understood that the pressing plate mechanism 300 includes a hinge portion 310, a first pressing plate 320 and a second pressing plate 330, the first pressing plate 320 is connected to the hinge portion 310, the second pressing plate 330 is also connected to the hinge portion 310, and the first pressing plate 320 and the second pressing plate 330 form a non-zero angle. It can be understood that the first pressing plate 320 can be directly fixedly connected to the hinge portion 310, or indirectly fixed to the hinge portion 310 through the second pressing plate 330; the second pressing plate 330 can be directly fixedly connected to the hinge portion 310, or indirectly fixed to the hinge portion 310 through the first pressing plate 320. The hinge portion 310 can rotate relative to the base 100, so that the first pressing plate 320 and the second pressing plate 330 can rotate relative to the base 100. A space is formed between the first pressing plate 320 and the pressing wheel 230 for the traction rope 800 to pass through. After the traction rope 800 is unloaded from the roller 220 , it passes through the space formed by the first pressing plate 320 and the pressing wheel 230 and then connects downward to the grid plate 3000 .

[0062] Reference Figure 5 and Figure 6As shown, it can be understood that the elastic mechanism 400 is arranged at a position matching the rotation track of the pressing plate mechanism 300. The end of the elastic mechanism 400 abuts against the second pressing plate 330 and provides a supporting force to the second pressing plate 330. The end of the elastic mechanism 400 can be compressed and provide a pre-tightening force under the force of the second pressing plate 330, that is, it can be compressed along the rotation direction of the second pressing plate 330.

[0063] In the lifting device 1000 of the embodiment of the present invention, when the traction rope 800 is subjected to force, the traction rope 800 is pressed toward the first pressure plate 320 and guided to be retracted and unwound by the first pressure plate 320. At this time, the pressure wheel 230 does not contact the traction rope 800 and therefore does not work, the movement of the traction rope 800 is not hindered, and the second pressure plate 330 is pressed toward the elastic mechanism 400, so that the elastic mechanism 400 is compressed and has a pre-tightening force; when the traction rope 800 is not subjected to force, the traction rope 800 will be in a relaxed state, and the second pressure plate 330 will reset under the pre-tightening force of the elastic mechanism 400, so that the first pressure plate 320 presses the traction rope 800 toward the pressure wheel 230, which assists the movement of the traction rope 800, and the traction rope 800 is retracted and unwound under the drive of the pressure wheel 230. Therefore, the embodiment of the present invention can keep the traction rope 800 between the rope outlet end of the roller 220 and the outer peripheral wall of the pressure wheel 230 in a taut state, so that the traction rope 800 can be reeled and unreeled in an orderly manner, thereby solving the problem that the traction rope 800 cannot be reeled and unreeled normally when it is not under stress, and improving the stability of the reeling and unreeling operation of the lifting device 1000.

[0064] Reference Figure 7 As shown, it can be understood that in order to better guide the traction rope 800, the first pressing plate 320 is provided with a guide groove 321, and the traction rope 800 moves in the guide groove 321, and the side wall of the guide groove 321 guides and limits the traction rope 800. In the direction away from the roller 220, the width of the guide groove 321 gradually decreases, so that the traction rope 800 coming out of the roller 220 can be guided to the center and then guided downward, which improves the smoothness of the traction rope 800 during the movement and reduces the risk of the traction rope 800 falling out of the groove.

[0065] Reference Figure 7As shown, it can be understood that the first pressing plate 320 is provided with a limiting rib 322, and the limiting rib 322 is provided at one end of the first pressing plate 320 away from the roller 220. After the traction rope 800 is guided to the center through the guide groove 321, it is further guided by the limiting rib 322. It can be understood that the limiting rib 322 and the first pressing plate 320 are enclosed to form a channel (not shown in the figure) for the traction rope 800 to pass through, which can guide the traction rope 800 and prevent the traction rope 800 from skipping when it is guided downward, thereby improving the running stability of the traction rope 800. It can be understood that the limiting rib 322 of the embodiment of the present invention includes a first bending piece 3221 and a second bending piece 3222, the fixed end of the first bending piece 3221 and the fixed end of the second bending piece 3222 are connected to the first pressing plate 320 and are arranged at intervals along the width direction of the first pressing plate 320, the free end of the first bending piece 3221 is bent and extended toward the second bending piece 3222, and the free end of the second bending piece 3222 is bent and extended toward the first bending piece 3221. A notch 3223 is formed between the free end of the first bending section and the free end of the second bending section, so that the traction rope 800 can be easily loaded into the channel through the notch 3223, thereby reducing the difficulty of assembly and improving the assembly efficiency.

[0066] Reference Figure 7 As shown, it can be understood that in the lifting device 1000 of an embodiment of the present invention, the hinge part 310 is a hinge shaft 311, and the hinge shaft 311 is inserted into the base 100 and is rotatably connected to the base 100. One end of the first pressing plate 320 is fixedly connected to the hinge shaft 311, and one end of the second pressing plate 330 is fixedly connected to the hinge shaft 311. The pressing plate mechanism 300 also includes a connecting plate 340, and the other end of the first pressing plate 320 and the other end of the second pressing plate 330 are connected through the connecting plate 340, so that the first pressing plate 320, the second pressing plate 330 and the connecting plate 340 form a triangular stable structure, thereby improving the stability of the connection between the first pressing plate 320 and the second pressing plate 330, and further improving the structural strength of the pressing plate mechanism 300.

[0067] Reference Figure 5 and Figure 6 As shown, it can be understood that in a lifting device 1000 of an embodiment of the present invention, the elastic mechanism 400 is a micro switch 410, and the micro switch 410 is installed on the base 100. The contact 411 of the micro switch 410 is elastic, and the contact 411 of the micro switch 410 is abutted against the second pressure plate 330, so as to achieve the effect on the second pressure plate 330, and it is also possible to detect whether the traction rope 800 is under force through the micro switch 410, thereby realizing the control of the lifting and lowering movement of the grille plate 3000.

[0068] Reference Figure 5 and Figure 6As shown, it can be understood that the lifting device 1000 of the embodiment of the present invention, the driving mechanism 200 further includes a rotating shaft 240 and a driven wheel 250, the driven wheel 250 and the pressure wheel 230 are fixed to the rotating shaft 240, and the rotating shaft 240 is inserted into the base 100 and is rotatably connected to the base 100. The roller 220 drives the driven wheel 250, thereby driving the rotating shaft 240 to rotate, and then driving the pressure wheel 230 to rotate, and its structure is simpler and lighter, which is conducive to the miniaturization of the lifting device 1000.

[0069] Reference Figure 6 and Figure 8 As shown, it can be understood that the roller 220 and the driven wheel 250 are driven by a belt. The side wall of the roller 220 is provided with a first groove 221 along the circumference of the roller 220, and the peripheral wall of the driven wheel 250 is provided with a second groove 251, and a transmission belt 260 is sleeved between the second groove 251 and the first groove 221. By means of the transmission belt 260, the internal space of the lifting device 1000 can be effectively utilized, the structure of the components of the driving mechanism 200 can be simplified, and it is ensured that there is no speed difference between the roller 220 and the pressure wheel 230, so that the traction rope 800 between the rope outlet end of the roller 220 and the outer peripheral wall of the pressure wheel 230 is kept in a taut state, and the traction rope 800 is prevented from curling when the traction rope 800 is rewound, and the mutual influence between the roller 220 and the grid plate 3000 is effectively cut off.

[0070] Reference Figure 8 As shown, it can be understood that the pressure wheel 230 includes a wheel body 231 and a pressure rib 232, the pressure rib 232 is fixedly connected to the peripheral wall of the wheel body 231, and a plurality of pressure ribs 232 are provided, and the plurality of pressure ribs 232 are arranged at intervals along the circumference of the wheel body 231. The arrangement of the pressure rib 232 can improve the stability of the transmission between the pressure wheel 230 and the traction rope 800, and prevent the traction rope 800 from slipping on the outer peripheral wall of the pressure wheel 230. It can be understood that the wheel body 231 and the pressure rib 232 are integrally formed, so that the structure of the pressure wheel 230 is more stable.

[0071] It is understandable that, using the lifting device 1000 of the above embodiment of the present invention, if the roller 220 accidentally skips, causing the rope inside the roller 220 to curl, the abnormality will be isolated under the joint action of the pressure wheel 230, the pressure plate mechanism 300 and the elastic mechanism 400, and cannot be transmitted to the hanging rope end of the grid plate 3000, causing the grid plate 3000 to shake. At the same time, when the hanging rope end of the grid plate 3000 is not subjected to force and curls, the abnormality will also be isolated under the joint action of the pressure wheel 230, the pressure plate mechanism 300 and the elastic mechanism 400, and the traction rope 800 will not be affected when winding in and out of the roller 220.

[0072] Reference Fig. 9As shown, in order to prevent the moving parts in the lifting device 1000 from interfering with other parts of the panel assembly, and the lifting device 1000 has dustproof requirements, the lifting device 1000 also includes a motor cover 500 and a roller cover 600. The motor cover 500 and the roller cover 600 are fixedly connected to both sides of the base 100, respectively, the motor 210 is fixedly connected to the base 100 and is located in the enclosed space of the motor cover 500 and the base 100, and the roller 220 is fixedly connected to the output shaft of the motor 210 and is located in the enclosed space of the roller cover 600 and the base 100. The arrangement of the roller cover 600 and the motor cover 500 can protect the parts inside the lifting device 1000. In order to facilitate the repair and maintenance of the lifting device 1000, the motor cover 500 and the roller cover 600 can be detachably connected to the base 100, for example, by snap connection, screw connection, etc., which are not specifically limited here.

[0073] It is understandable that the bottom wall of the roller 220 is used to wind the traction rope 800, but the bottom wall of the conventional roller 220 is smooth, and the traction rope 800 will be locally piled up when winding, and the rope winding position is affected by the rope output angle, which is easy to form disordered cross accumulation, resulting in tangled traction ropes 800 and uneven gaps. When the accumulation is too high, the rope will collapse, which aggravates the friction loss between the traction ropes 800 and affects the service life. In order to solve the above problems, the roller 220 of the embodiment of the present invention is provided with a rope groove 270.

[0074] Reference Fig.10 and Fig.11 As shown, the rope groove 270 includes two linear groove groups 271 and two folding groove groups 272 extending along the circumference of the roller 220. The two linear groove groups 271 and the two folding groove groups 272 are connected in sequence, that is, each linear groove group 271 is connected to a folding groove group 272 at both ends. The linear grooves 2711 of the two linear groove groups 271 are offset by 1 / 2 of the slot pitch along the axial direction of the roller 220. Each linear groove group 271 includes multiple sections of linear grooves 2711, which are arranged at intervals along the axial direction of the roller 220. Each folding groove group 272 includes multiple sections of folding grooves 2721, which are arranged at intervals along the axial direction of the roller 220. The linear grooves 2711 of two adjacent linear groove groups 271 along the circumference of the roller 220 can guide the rope winding through the folding grooves 2721. The folding grooves 2721 can prevent the adjacent linear grooves 2711 along the axial direction from crossing each other, and perform regular transition. The multiple straight grooves 2711 and the multiple broken grooves 2721 are sequentially connected to form a first layer of grooves (not shown in the figure) extending continuously along the bottom wall of the roller 220. The traction rope 800 is wound under the guidance of the first layer of grooves to form a first layer of traction rope (not shown in the figure). By guiding and limiting the traction rope 800 during winding, the traction rope 800 can be wound in an orderly and regular manner to avoid the traction rope 800 from skipping, collapsing, etc.

[0075] Reference Fig.10 and Fig.12 As shown, it can be understood that the two linear groove groups 271 correspond to the same arc angle of the roller 220 and are both 3π / 4, and the two fold line groove groups 272 correspond to the same arc angle of the roller 220 and are both π / 4. The above parameter settings can make the transition between the linear groove 2711 and the fold line groove 2721 smoother, which is beneficial to the stability of the winding of the traction rope 800, and makes the overall winding of the first layer of the groove body smoother and more stable.

[0076] It can be understood that the number of the straight groove group 271 and the folded groove group 272 is the same, and can be one, three or more. The specific selection can be based on the inner diameter of the rope groove 270 of the roller 220, and is not specifically limited here.

[0077] Reference Fig.12 As shown, it can be understood that the rope groove 270 also includes a first transition groove 273, and the first transition groove 273 is arranged at the tail end of the first layer of the groove body. The first transition groove 273 is arranged on the side wall of the roller 220 facing the tail end of the first layer of the groove body. The first transition groove 273 is used to cooperate with the leftmost end of the second layer of traction rope (not shown in the figure). The first transition groove 273 is formed by the first layer of the groove body climbing toward the outer peripheral wall of the roller 220. Under the guidance of the first transition groove 273, the traction rope 800 gradually climbs from the first layer to the second layer, and the second layer of traction rope gradually shifts 1 / 2 of the groove distance to the left along the axial direction of the roller 220, and is radially and axially guided and limited through the gap formed between the first layer of traction ropes, and finally wound to form the second layer of traction rope, thereby ensuring the smoothness and stability of the winding of the second layer of traction rope.

[0078] Reference Fig.13 As shown, it can be understood that the rope groove 270 also includes a second transition groove 274, which is provided on the side wall of the roller 220 facing the head end of the first layer of the groove body, that is, the rope head position of the traction rope 800. The second transition groove 274 cooperates with the rightmost end of the second layer of traction rope, and guides the traction rope 800 to gradually climb from the second layer to the third layer, thereby ensuring the smoothness and stability of the overall winding of the second layer of traction rope.

[0079] Reference Figure 1 , Figure 2 and Figure 3 As shown, a panel assembly of an embodiment of the present invention comprises a face frame 2000, a grille plate 3000 and the lifting device 1000 of the above embodiment. The face frame 2000 is provided with an installation opening 2100 for installing the grille plate 3000, and the installation opening 2100 is arranged corresponding to the position of the air inlet.

[0080] In order to improve the installation accuracy of the grid plate 3000 and the installation opening 2100, refer to Figure 3 and Fig.15 As shown, the upper end of the grid plate 3000 is provided with a guide column 3100; Figure 2 and Fig.14 As shown, the lower end of the lifting device 1000 is provided with a guide hole 700 opening downward, and the guide hole 700 cooperates with the guide column 3100 to achieve the guide limit of the grid plate 3000 and the installation port 2100. It can be understood that the lifting device 1000 is provided with at least two, and at least two lifting devices 1000 are arranged at intervals on the face frame 2000. The lifting device 1000 is connected to the grid plate 3000 through a traction rope 800, and each lifting device 1000 is provided with a guide hole 700, and the grid plate 3000 is provided with a guide column 3100 cooperating with the guide hole 700 at a position corresponding to each lifting device 1000.

[0081] The panel assembly of the embodiment of the present invention adopts the lifting device 1000 of the first embodiment to drive the grille plate 3000 to lift and lower. The lifting device 1000 is provided with a pressure wheel 230, a pressure plate mechanism 300 and an elastic mechanism 400 that cooperate with each other at the rope outlet of the roller 220 that winds the traction rope 800. The pressure plate mechanism 300 can rotate relative to the base 100. The pressure wheel 230 is driven by the motor 210 and forms a space with the first pressure plate 320 for the traction rope 800 to pass through. The end of the elastic mechanism 400 abuts against the second pressure plate 330 and provides a supporting force. When the traction rope 800 is subjected to force, the traction rope 800 is pressed toward the first pressure plate. 320 and guided by the first pressure plate 320 for reeling and unwinding, the second pressure plate 330 is pressed toward the elastic mechanism 400, so that the elastic mechanism 400 is compressed and has a pre-tightening force, and when the traction rope 800 is not under stress, the second pressure plate 330 is reset under the pre-tightening force of the elastic mechanism 400, so that the first pressure plate 320 presses the traction rope 800 toward the pressure wheel 230, and the traction rope 800 is reeled and unwound under the drive of the pressure wheel 230; this embodiment can keep the traction rope 800 between the roller 220 and the pressure wheel 230 in a taut state, so that the traction rope 800 can be reeled and unwound in an orderly manner, thereby solving the problem that the traction rope 800 cannot be reeled and unwound normally when it is not under stress. Moreover, the embodiment of the present invention adopts at least two lifting devices 1000, and when the traction rope 800 of some lifting devices 1000 is not under force, normal winding and unwinding can still be achieved, thereby solving the problems of loose rope around the roller 220 and deviation, shaking, and flipping of the grille plate 3000 during the lifting process, thereby improving the stability of the grille plate 3000 of the panel assembly during operation.

[0082] Since the panel assembly adopts all the technical solutions of the lifting device 1000 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0083] Reference Figure 1 and Figure 2As shown, an air conditioner according to an embodiment of the present invention includes a panel assembly according to the above embodiment. The air conditioner according to the embodiment of the present invention can be a duct air conditioner, a ceiling air conditioner, a hanging air conditioner, etc. The air conditioner according to the embodiment of the present invention adopts the panel assembly according to the embodiment of the second aspect, and the panel assembly drives the grille plate 3000 to move up and down by setting a lifting device 1000. The lifting device 1000 is provided with a pressure wheel 230, a pressure plate mechanism 300 and an elastic mechanism 400 that cooperate with each other at the rope outlet of the roller 220 that winds the traction rope 800. The pressure plate mechanism 300 can rotate relative to the base 100, and the pressure wheel 230 is driven by the motor 210 and forms a space with the first pressure plate 320 for the traction rope 800 to pass through. The end of the elastic mechanism 400 abuts against the second pressure plate 330 and provides support force. When the traction rope 800 is subjected to force, the traction rope 800 is pressed toward the first pressure plate 320 and guided to be retracted and unreeled through the first pressure plate 320, and the second pressure plate 330 is guided to be retracted and unreeled through the first pressure plate 320. 330 is pressed toward the elastic mechanism 400, so that the elastic mechanism 400 is compressed and has a preload. When the traction rope 800 is not under stress, the second pressure plate 330 is reset under the preload of the elastic mechanism 400, so that the first pressure plate 320 presses the traction rope 800 toward the pressure wheel 230, and the traction rope 800 is retracted and unwound under the drive of the pressure wheel 230. The present embodiment can keep the traction rope 800 between the roller 220 and the pressure wheel 230 in a taut state, so that the traction rope 800 can be retracted and unwound in an orderly manner, thereby solving the problem that the traction rope 800 cannot be retracted and unwound normally when it is not under stress, solving the shaking problem of the grille plate 3000 during operation, and improving the stability of the grille plate 3000 of the panel assembly during operation, thereby reducing the failure rate of the air conditioner.

[0084] Since the air conditioner adopts all the technical solutions of the panel assembly of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0085] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A lifting device, characterized in that: include: Base; The driving mechanism comprises a motor, a roller and a pressing wheel, wherein the motor is fixedly connected to the base, the roller and the pressing wheel are spaced apart, and the motor is in transmission connection with the roller and the pressing wheel to drive the roller and the pressing wheel to rotate; A pressure plate mechanism, comprising a hinged portion, a first pressure plate and a second pressure plate, wherein the hinged portion can rotate relative to the base, the first pressure plate and the second pressure plate are connected to the hinged portion, and a space for the traction rope to pass through is formed between the first pressure plate and the pressure wheel; The elastic mechanism is fixedly connected to the base, and the end of the elastic mechanism abuts against the second pressing plate.

2. The lifting device according to claim 1, characterized in that: The first pressing plate is provided with a guide groove, and the width of the guide groove gradually decreases in a direction away from the roller.

3. The lifting device according to claim 1 or 2, characterized in that: A limiting rib is provided at one end of the first pressing plate away from the roller, and the limiting rib and the first pressing plate are combined to form a channel for the traction rope to pass through.

4. The lifting device according to claim 1, characterized in that: The hinged portion is a hinge shaft rotatably connected to the base, one end of the first pressing plate and one end of the second pressing plate are respectively fixedly connected to the hinge shaft, and the other end of the first pressing plate and the other end of the second pressing plate are connected via a connecting plate.

5. The lifting device according to claim 1, characterized in that: The elastic mechanism is a micro switch, and a contact of the micro switch abuts against the second pressing plate.

6. The lifting device according to claim 1, characterized in that: The driving mechanism further comprises a rotating shaft and a driven wheel, wherein the rotating shaft is fixedly connected to the driven wheel and the pressure wheel, and the roller is drivingly connected to the driven wheel.

7. The lifting device according to claim 6, characterized in that: A first groove is formed on the side wall of the roller along the circumference of the roller, a second groove is formed on the circumferential wall of the driven wheel, and a transmission belt is sleeved between the second groove and the first groove.

8. The lifting device according to claim 1, characterized in that: The pressing wheel comprises a wheel body and pressing ribs, wherein the pressing ribs are fixedly connected to the peripheral wall of the wheel body and are arranged at intervals along the circumference of the wheel body.

9. The lifting device according to claim 1, characterized in that: The roller is provided with rope grooves, and the rope grooves include at least one linear groove group and at least one fold line groove group extending along the circumference of the roller, each of the linear groove groups includes multiple sections of linear grooves spaced apart along the axial direction of the roller, and each of the fold line groove groups includes multiple sections of linear grooves spaced apart along the axial direction of the roller, and the multiple sections of the linear grooves and the multiple sections of the fold line grooves are sequentially connected to form a groove body extending continuously along the bottom wall of the roller.

10. The lifting device according to claim 9, characterized in that: There are two of each of the linear groove group and the folding groove group, and the linear grooves of the two linear groove groups are offset by 1 / 2 of the groove pitch along the axial direction of the roller.

11. The lifting device according to claim 10, characterized in that: The arc angles of the two straight groove groups corresponding to the rollers are 3π / 4, and the arc angles of the two broken line groove groups corresponding to the rollers are π / 4.

12. The lifting device according to claim 9, characterized in that: The rope groove further comprises a first transition groove, which is arranged at the tail end of the groove body and at the side wall of the roller facing the tail end of the groove body.

13. The lifting device according to claim 9 or 12, characterized in that: The rope groove further includes a second transition groove, which is arranged on a side wall of the roller facing the head end of the groove body.

14. A panel assembly, characterized in that include: A face frame having a mounting opening; A grid plate, used for installation in the installation opening, wherein one end of the grid plate facing the installation opening is provided with a guide column; The lifting device according to any one of claims 1 to 13, wherein at least two lifting devices are provided, at least two of the lifting devices are spaced apart from each other on the surface frame, the lifting devices are connected to the grille plate via a traction rope, and are provided with guide holes that cooperate with the guide columns.

15. An air conditioner, characterized in that: The panel assembly comprises the panel assembly of claim 14.

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