Driving device for clothes drying machine

Abstract

The present invention discloses a driving device for a clothes drying machine, comprising a motor and a rope reel driven by the motor, wherein the rope reel comprises a first wheel groove and a second wheel groove for winding a clothes drying rope, and is characterized in that the first wheel groove and the second wheel groove are coaxially arranged and rotate synchronously. Compared with the prior art, the advantages of the present invention are that the volume of the driving device can be reduced by coaxially arranging two wheel grooves for winding clothes drying ropes; the outer diameter of the main transmission disc for driving the wheel groove to rotate is set to be larger than the outer diameter of the wheel disc forming the wheel groove, thereby increasing the reduction ratio and thus increasing the load carrying capacity.

Description

Technical Field

[0001] The invention relates to a power device, in particular to a driving device for a clothes drying machine. Background Art

[0002] Traditional clothes drying racks are hung high up, and clothes need to be supported and hung on the clothes drying racks using clothes drying rods, which is very inconvenient to use and cannot meet people's life needs. Therefore, electric clothes drying machines have gradually entered thousands of households, providing convenience for people's lives.

[0003] Usually, an electric clothes dryer includes a clothes drying rod and a lifting mechanism located in a housing of the electric clothes dryer installed on the ceiling, wherein the lifting mechanism includes a driving device, a winding wheel driven by the driving device, and a steel wire rope extending from both ends of the housing, the lower end of the steel wire rope is tied to the clothes drying rod, and the other end of the steel wire rope is wound around the winding wheel. Driven by the driving device, the steel wire rope raises or lowers the clothes drying rod, which is convenient and saves time and effort.

[0004] For example, a clothes drying rack driving motor disclosed in a Chinese patent application number 201721747791.X includes a housing and a driving mechanism, the driving mechanism is installed in the housing, the driving mechanism includes a DC motor, a rope winder and a circuit control module, the rope winder is connected to the DC motor through a worm gear, the rope winder includes a housing and a rope winding wheel, the housing has a mounting groove, the mounting groove has a connecting shaft, the rope winding wheel is installed on the connecting shaft, the worm wheel is fixedly connected to the upper end of the rope winding wheel and is connected to the worm of the DC motor; another example is a winding device for an electric clothes drying machine disclosed in a Chinese patent application number 201710948737.X, which includes: a winding assembly for winding a wire, a driving assembly for driving the winding assembly to rotate, and a driving assembly for driving the winding assembly to rotate. The driving assembly includes a tubular motor, a worm, a reduction gear and a worm wheel. The worm is connected to the output shaft of the tubular motor, the reduction gear is connected to the end of the worm, the worm wheel is connected to the reduction gear and the winding assembly, and rotates under the drive of the reduction gear, thereby driving the winding assembly to rotate, the worm wheel includes a first worm wheel and a second worm wheel, the winding assembly includes a first winding wheel and a second winding wheel, the reduction gear includes a first reduction gear and a second reduction gear, the first winding wheel is coaxially arranged with the first worm wheel, the first worm wheel is meshed with the first reduction gear, the second winding wheel is coaxially arranged with the second worm wheel, and the second worm wheel is meshed with the second reduction gear, and the line between the central axis of the first winding wheel and the central axis of the second winding wheel is perpendicular to the central axis of the output shaft of the tubular motor.

[0005] The power device of the above-mentioned clothes drying machines adopts a design of a single motor driving a double reel, so the size is generally large; and the power device of the clothes drying machine adopts a longitudinally arranged motor, so that the outlets on both sides deviate far from the central axis, see Figure 7When the steel wire ropes on both sides are subjected to force, there will be a component force in the common direction relative to the central axis X (the downward force shown in the figure, as shown by the arrow), which will cause the steel wire rope to bend greatly during operation and wear the clothes drying machine, thereby affecting the stability and service life of the clothes drying machine. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a clothes drying machine driving device in view of the problems existing in the above-mentioned prior art, which can save space and ensure stable operation.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a clothes drying machine driving device, including a motor and a rope winding wheel driven by the motor, the rope winding wheel including a first wheel groove and a second wheel groove for winding the clothesline, characterized in that: the first wheel groove and the second wheel groove are coaxially arranged and rotate synchronously.

[0008] Preferably, the rope winding wheel includes a main transmission disk driven to rotate by a motor, and a rope winding disk driven to rotate by the main transmission disk, and the first wheel groove and the second wheel groove are formed on the rope winding disk.

[0009] To facilitate the formation of two wheel grooves, the rope winding drum includes three coaxially fixed wheel discs, wherein a first disc-shaped spacer is provided between two adjacent wheel discs so that the first wheel groove is formed between the two wheel discs, and a second disc-shaped spacer is provided between another two adjacent wheel discs so that the second wheel groove is formed between the two wheel discs, and the first spacer, the second spacer and the wheel discs are coaxially arranged.

[0010] In order to increase the reduction ratio and improve the load carrying capacity, the outer diameter of the main drive disc is larger than the outer diameter of the wheel disc.

[0011] In order to allow the motor to be arranged horizontally in the clothes drying machine (in line with the extension direction of the central axis of the mounting bracket) so that it can be closer to the central axis of the clothes drying machine to save space, a worm is arranged on the output shaft of the motor, and the worm is located on the side of the main transmission disc, and the main transmission disc constitutes a worm gear structure and engages with the worm.

[0012] In order to offset the forces generated by the wires coming out from both sides in the up and down directions, a main shell is also included. The rope winding wheel is accommodated in the main shell. The periphery of the main shell is provided with two wire outlets spaced apart in the circumferential direction. The two wire outlets are symmetrical with respect to the center of the rope winding wheel.

[0013] Preferably, the main shell includes an upper cover and a lower cover that are interlocked, and an accommodating space for accommodating the rope winding wheel is formed between the upper cover and the lower cover.

[0014] In order to guide the direction of the clothesline, the upper cover covers the outer periphery of the first wheel groove and the second wheel groove. Inside the upper cover, adjacent to the wire outlet, there is a wire outlet groove that is recessed in a direction away from the first wheel groove and the second wheel groove. One end of the wire outlet groove is connected to the wire outlet, and the other end extends to the outer periphery of the first wheel groove and the second wheel groove.

[0015] In order to detect the travel of the clothes drying machine so as to stop it at the limit position, it also includes a travel limit device, which includes an adjustable gear and two limit switches corresponding to the upper travel limit position and the lower travel limit position respectively. The adjustable gear includes a gear part driven to rotate by a rope winding wheel, and an adjusting part rotating synchronously with the gear part. The periphery of the adjusting part is provided with a radially outwardly protruding protrusion, and the protrusion also has two circumferentially spaced apart arrangements, and each limit switch has a contact that can cooperate with one of the protrusions.

[0016] Preferably, a transmission gear group is arranged between the adjustable gear and the rope winding wheel, and the transmission gear group includes a first transmission gear, a second transmission gear and a third transmission gear, the first transmission gear is arranged on the main shaft of the rope winding wheel, the second transmission gear is meshed with the first transmission gear, and the third transmission gear is coaxially arranged with the second transmission gear, and the gear part of the adjustable gear is meshed with the third transmission gear.

[0017] Compared with the prior art, the advantages of the present invention are: by coaxially arranging two wheel grooves for winding the clothesline, the volume of the driving device can be reduced; the outer diameter of the main transmission plate used to drive the wheel groove to rotate is set to be larger than the outer diameter of the wheel plate forming the wheel groove, thereby increasing the reduction ratio and thus increasing the load capacity; in addition, through the worm gear transmission between the motor and the rope winding wheel, the motor is arranged horizontally and extends along the length direction of the clothes drying machine's bracket, the adjustment range of the relative position of the driving device and the bracket is expanded, and when the width of the clothes drying machine's bracket is constant, it is easier to rotate the angle of the driving device relative to the central axis of the bracket, so that the outlet of the clothesline is as close to the central axis of the bracket as possible, so that the clothes drying machine can work stably; the outlets on both sides are symmetrical, and the forces generated by the outlets are relatively offset in the up and down directions, which can make the clothes drying machine work more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a driving device according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the exploded structure of the driving device according to an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of an upper cover of a driving device according to an embodiment of the present invention;

[0021] Figure 4is a cross-sectional view of a driving device according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the installation of the driving device according to an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of force analysis of a driving device according to an embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of force analysis of a driving device in the prior art. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings.

[0026] See also Figure 1 to Figure 4 A clothes drying machine driving device includes a main shell 1, a motor 2, a rope winding wheel 3, a chassis 4 and a travel limiting device 5.

[0027] The main housing 1 includes an upper cover 11 and a lower cover 12 which are buckled together. An accommodation space is formed between the upper cover 11 and the lower cover 12. The rope reel 3 is arranged in the accommodation space. The motor 2 is arranged at an adjacent position of the main housing 1. The chassis 4 is arranged below the lower cover 12 for connecting and fixing with an external mounting base (mounting bracket). The travel limit device 5 is arranged above the upper cover 11.

[0028] The rope reel 3 includes a main transmission disc 31 and a rope reel fixed coaxially. In the present embodiment, the rope reel includes three wheels 32 arranged at intervals up and down, and the main transmission disc 31 and the three wheels 32 can rotate synchronously. The bottom of the top wheel 32 has a first disc-shaped spacer 321, and the bottom of the middle wheel 32 has a second disc-shaped spacer 322. The first spacer 321, the second spacer 322 and the wheel 32 are arranged coaxially. Thus, a first wheel groove 323 is formed between the top wheel 32 and the middle wheel 32, and a second wheel groove 324 is formed between the middle wheel 32 and the bottom wheel 32. The first wheel groove 323 and the second wheel groove 324 are parallel to each other in the axial direction and are arranged at intervals. The clothesline can be stored in the first wheel groove 323 (the outer periphery of the first spacer 321) and the second wheel groove 324 (the outer periphery of the second spacer 322). The outer diameter of the outermost circle of the wound clothesline is not greater than the outer diameter of the wheel disc 32. The main transmission disc 31 is located below the wheel disc 32 and is used for transmission connection with the motor 2. The three wheel discs 32 and the main transmission disc 31 are coaxially fixed by two positioning bolt pins 34 to ensure synchronous rotation.

[0029] The motor 2 is arranged adjacent to the main housing 1, and the output shaft 21 of the motor 2 extends into the main housing 1. A worm 22 is arranged on the output shaft 21 of the motor 2, and the worm 22 is meshed with the main transmission disc 31 (the worm 22 extends tangentially to the main transmission disc 31), and the main transmission disc 31 is a worm gear structure. Therefore, when the motor 2 is running, the main transmission disc 31 can be driven to rotate by the worm 22. The worm gear structure has a deceleration effect. In addition, further, the main transmission disc 31 and the wheel disc are coaxially fixed and the outer diameter of the main transmission disc 31 is larger than the outer diameter of the wheel disc, so that the tangential linear velocity of the wheel disc is smaller than the tangential linear velocity of the main transmission disc 31 under the condition of the same angular velocity, so that the main transmission disc 31 plays a role in further transmission deceleration. Since the main transmission disc 31 and each wheel disc (wheel groove) are coaxially arranged, the radial dimension of the main transmission disc 31 can be as large as possible relative to the wheel groove, thereby increasing the reduction ratio. When the power of the motor 2 remains unchanged, the output torque of the motor 2 after passing through the rope wheel 3 is significantly increased compared with the prior art, thereby improving the load capacity.

[0030] A wire outlet 13 is provided around the main housing 1. In this embodiment, the wire outlet 13 is provided around the upper cover 11, and there are two wire outlets 13 arranged at intervals, and the two wire outlets 13 are symmetrical with respect to the center of the rope winding wheel 3. The upper cover 11 covers the outer periphery of the wheel 32 (the first wheel groove 323 and the second wheel groove 324). Inside the upper cover 11, adjacent to the wire outlet 13, there is a wire outlet groove 14 formed by being recessed in a direction away from the wheel 32. One end of the wire outlet groove 14 is connected to the wire outlet 13, and the other end extends to the outer periphery of the wheel 32, so as to guide the clothesline to be discharged or collected.

[0031] See also Figure 5 and Figure 6 The driving device is installed on the bracket 100, and the two clotheslines 7 respectively wound in the first wheel groove 323 and the second wheel groove 324 are led out from the corresponding wire outlets 13 and respectively wound on the winding pulleys 101 at both ends of the length direction of the mounting bracket 100. The wire outlets 13 are staggered from the central axis X in the length direction of the mounting bracket 100, and the two wire outlets 13 are respectively located on both sides of the central axis X. Therefore, after each clothesline 7 is led out from the symmetrical wire outlets 13, since the clotheslines 7 on both sides of the driving device are connected to the load at the same time, they generate a pulling force of the same magnitude on both sides of the driving device. After the above two pulling forces are decomposed, the component forces on the central axis X and its vertical direction correspond to each other (such as Figure 6 As shown by the arrows in the figure, they offset each other and make the drive device more stable during operation.

[0032] Since the worm gear transmission structure is adopted between the motor 2 and the rope reel 3, the motor 2 can be arranged horizontally on the bracket 100 and extend along the length direction of the bracket 100. Since the length of the bracket 100 is often much greater than the width, the adjustment range of the relative position of the drive device and the bracket 100 is expanded. When the width of the rack bracket 100 is constant, it is easier to rotate the drive device relative to the central axis X of the bracket 100, so that the outlet 13 of the clothesline 7 is as close to the central axis X of the bracket 100 as possible, so that the clothesline 7 can work stably. Moreover, by rotating the clothesline drive device, relative to the central axis X of the bracket 100, the clothesline 7 can be rotated to the central axis X of the bracket 100. Figure 7 The clothes drying machine driving device enables a motor of the same size to be placed within a smaller width of the clothes drying machine bracket, thereby saving space and reducing costs.

[0033] The travel limit device 5 includes an adjustable gear 51 and a limit switch 52, and the adjustable gear 51 is driven by the rope winding wheel 3. In this embodiment, a transmission gear set is arranged between the adjustable gear 51 and the rope winding wheel 3, including a first transmission gear 61, a second transmission gear 62 and a third transmission gear 63, wherein the first transmission gear 61 is arranged on the main shaft 33 of the rope winding wheel 3 (the main shaft 33 passes through the main transmission disc 31 and the wheel disc 32, so that the main transmission disc 31 and the wheel disc 32 are coaxially fixed, and the main shaft 33 can be integrally formed with one of the wheel discs 32, such as the topmost wheel disc 32), the second transmission gear 62 is meshed with the first transmission gear 61, and the third transmission gear 63 is coaxially arranged with the second transmission gear 62. The above-mentioned adjustable gear 51 is meshed with the third transmission gear 62.

[0034] The adjustable gear 51 includes a coaxially arranged and synchronously rotating gear portion 511 and an adjusting portion 512, wherein the adjusting portion 512 is disc-shaped and is located above the gear portion 511. The gear portion 511 is meshed with the third transmission gear 62, and a radially outwardly protruding protrusion 513 is arranged around the adjusting portion 512. The limit switch 52 has two parallelly arranged ones, corresponding to the upper travel limit position and the lower travel limit position, respectively, and is arranged adjacent to the main transmission disc 31. The protrusion 513 also has two circumferentially spaced ones. When the adjustable gear 51 is driven to rotate by the rope reel 3, the protrusion 513 on it can touch the contact 521 on the limit switch 52 (one protrusion 513 corresponds to one contact 521), triggering the motor 2 to stop, thereby controlling the start and stop of the motor 2. By adjusting the angle between the two protrusions 513, the upper and lower travel limit control of the clothes drying machine can be achieved.

Claims

1. A clothes drying machine driving device, comprising a motor (2) and a rope winding wheel (3) driven by the motor (2), the rope winding wheel (3) comprising a first wheel groove (323) and a second wheel groove (324) for winding a clothes drying rope (7), characterized in that: The first wheel groove (323) and the second wheel groove (324) are coaxially arranged and rotate synchronously; The rope winding wheel (3) comprises a main transmission disc (31) driven to rotate by a motor (2), and a rope winding disc driven to rotate by the main transmission disc (31), wherein the first wheel groove (323) and the second wheel groove (324) are formed on the rope winding disc; The rope winding drum comprises three coaxially fixed wheel discs (32), wherein a first disc-shaped spacer (321) is provided between two adjacent wheel discs (32), so that the first wheel groove (323) is formed between the two wheel discs (32), and a second disc-shaped spacer (322) is provided between another two adjacent wheel discs (32), so that the second wheel groove (324) is formed between the two wheel discs (32), and the first spacer (321), the second spacer (322) and the wheel disc (32) are coaxially arranged; The clothesline (7) can be stored in the first wheel groove (323) and the second wheel groove (324), and the outer diameter of the outermost circle of the wound clothesline (7) is not greater than the outer diameter of the wheel disc (32); The outer diameter of the main transmission disc (31) is greater than the outer diameter of the wheel disc (32); A worm (22) is provided on the output shaft (21) of the motor (2), the worm (22) is located on the side of the main transmission disc (31), and the main transmission disc (31) forms a worm gear structure and meshes with the worm (22); The drive device is mounted on a bracket (100), and further comprises a main housing (1). The rope winding wheel (3) is accommodated in the main housing (1). The periphery of the main housing (1) is provided with two wire outlets (13) spaced apart in the circumferential direction. The two wire outlets (13) are symmetrical with respect to the center of the rope winding wheel (3). The wire outlets (13) are staggered with respect to a central axis (X) in the length direction of the bracket (100), and the two wire outlets (13) are respectively located on both sides of the central axis (X).

2. The driving device for the clothes drying machine according to claim 1, characterized in that: The main housing (1) comprises an upper cover (11) and a lower cover (12) which are interlocked, and an accommodation space for accommodating a rope winding wheel (3) is formed between the upper cover (11) and the lower cover (12).

3. The driving device for the clothes drying machine according to claim 2, characterized in that: The upper cover (11) covers the outer periphery of the first wheel groove (323) and the second wheel groove (324); inside the upper cover (11), adjacent to the wire outlet (13), there is a wire outlet groove (14) formed by being recessed in a direction away from the first wheel groove (323) and the second wheel groove (324); one end of the wire outlet groove (14) is connected to the wire outlet (13), and the other end extends to the outer periphery of the first wheel groove (323) and the second wheel groove (324).

4. The driving device for the clothes drying machine according to claim 1, characterized in that: The invention also comprises a travel limit device (5), the travel limit device (5) comprising an adjustable gear (51) and two limit switches (52) corresponding to an upper travel limit position and a lower travel limit position respectively, the adjustable gear (51) comprising a gear portion (511) driven to rotate by a rope winding wheel (3), and an adjusting portion (512) rotating synchronously with the gear portion (511), the adjusting portion (512) being provided with a protrusion (513) protruding radially outward on the periphery, the protrusion (513) also comprising two protrusions (513) arranged at intervals in the circumferential direction, and each limit switch (52) having a contact (521) capable of cooperating with one of the protrusions (513).

5. The driving device for the clothes drying machine according to claim 4, characterized in that: A transmission gear set is arranged between the adjustable gear (51) and the rope winding wheel (3), and the transmission gear set includes a first transmission gear (61), a second transmission gear (62) and a third transmission gear (63). The first transmission gear (61) is arranged on the main shaft (33) of the rope winding wheel (3), the second transmission gear (62) is meshed with the first transmission gear (61), and the third transmission gear (63) is coaxially arranged with the second transmission gear (62), and the gear portion (511) of the adjustable gear (51) is meshed with the third transmission gear (63).

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