A double-shaft concentric separation transmission mechanism and a washing machine composed of the same

Abstract

The present invention discloses a double-axis concentric separation transmission mechanism and a washing machine composed of the same, the washing machine comprises a chassis, a barrel, a dehydration barrel is rotatably arranged in the barrel, a pulsator is rotatably arranged in the dehydration barrel, a dehydration motor, a washing motor and a double-axis concentric separation transmission mechanism are arranged in the chassis, the double-axis concentric separation transmission mechanism comprises a central shaft, a first pulley is fixedly arranged on the central shaft, a transmission sleeve is rotatably arranged, a second pulley is fixedly arranged on the transmission sleeve, a positioning sleeve is rotatably arranged, the positioning sleeve is fixedly arranged on the barrel, the transmission sleeve is fixedly connected to the dehydration barrel; the central shaft is fixedly connected to the pulsator, the dehydration motor is connected to the second pulley in transmission, and the washing motor is connected to the first pulley in transmission. The present invention has a simple structure, a simple production process, a low manufacturing cost, convenient operation and good dehydration effect.

Description

Technical Field

[0001] The invention belongs to the field of washing machines, and in particular relates to a double-shaft concentric separation transmission mechanism and a washing machine composed of the same. Background Art

[0002] Currently, fully automatic washing machines on the market usually use a clutch to achieve the coupling and disconnection between the dehydration barrel and the motor. In addition, a drainage motor is required. Its structure is complex, the production process is complicated, the cost is high, the selling price is high, and the water consumption and power consumption are large, and the maintenance cost is high. Semi-automatic washing and drying machines usually require a secondary fixing of the dehydration barrel when dehydrating. The operation is cumbersome, the dehydration speed is slow, and the volume is small, which cannot achieve the dehydration effect. In addition, the washing machine vibrates greatly during dehydration and has a high failure rate.

[0003] Therefore, there is an urgent need to develop a washing machine with simple structure, concise production process, low manufacturing cost, convenient operation and good dehydration effect. Summary of the invention

[0004] The object of the present invention is to provide a double-axis concentric separation transmission mechanism and a washing machine composed of the same. The washing machine composed of the transmission system has a simple structure, a simple production process, a low manufacturing cost, and is easy to operate and has a good dehydration effect.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A double-axis concentric separation transmission mechanism comprises a central shaft, a first pulley is fixedly provided at the lower portion of the central shaft, a transmission sleeve is sleeved at the upper portion of the central shaft, the transmission sleeve is rotatably connected to the central shaft via one or more first bearings, a second pulley is fixedly provided at the lower portion of the transmission sleeve, a positioning sleeve is sleeved at the upper portion of the transmission sleeve, the positioning sleeve is rotatably connected to the transmission sleeve via one or more second bearings.

[0007] Furthermore, a first gap is provided between the transmission sleeve and the central shaft; and a second gap is provided between the transmission sleeve and the positioning sleeve.

[0008] Furthermore, a first oil seal is provided between the center shaft and the transmission sleeve, and the first oil seal is provided above the first bearing located at the top; a second oil seal is provided between the transmission sleeve and the positioning sleeve, and the second oil seal is provided above the second bearing located at the top.

[0009] A washing machine comprises a chassis, a barrel, a water inlet pipe, a drain pipe, an upper cover plate, and a control button. A dehydration barrel is rotatably arranged in the barrel, a impeller is rotatably arranged in the dehydration barrel, a dehydration motor, a washing motor and the above-mentioned double-axis concentric separation transmission mechanism are arranged in the chassis, the positioning sleeve is fixedly arranged on the bottom wall of the barrel, and the transmission sleeve is fixedly connected to the bottom wall of the dehydration barrel; the central shaft is fixedly connected to the impeller, the dehydration motor is transmission-connected to the second pulley, and the washing motor is transmission-connected to the first pulley.

[0010] Furthermore, the upper portion of the positioning sleeve is threadedly connected with a nut, and the positioning sleeve and the barrel body are fixedly connected via the nut.

[0011] Furthermore, a positioning convex ring is fixedly provided outside the positioning sleeve, the bottom wall of the barrel body is arranged between the nut and the positioning convex ring, and a sealing gasket is arranged between the positioning convex ring and the bottom wall of the barrel body.

[0012] Furthermore, the top end of the transmission shaft sleeve is folded outward to form a mounting ring plate, and the mounting ring plate is fixedly connected to the dehydration barrel.

[0013] Furthermore, the dehydration barrel is provided with a lower fixing device, and the lower fixing device includes a plurality of supporting columns and a third bearing fixedly arranged in the barrel body, and the dehydration barrel is rotatably connected to the plurality of supporting columns via the third bearing.

[0014] Furthermore, the upper fixing device includes a plurality of upper frame positioning columns and a fourth bearing fixedly arranged on the bottom of the upper cover plate, and the dehydration barrel is rotatably connected to the plurality of upper frame positioning columns via the fourth bearing.

[0015] Furthermore, a limiting rubber sleeve is provided on the outer sleeve of the positioning column of the upper enclosure frame.

[0016] The beneficial effects of the present invention are as follows: the double-axis concentric separation transmission mechanism of the present invention effectively realizes the rotation separation of washing and dehydration. The present invention is provided with two motors, and the washing and dehydration processes are respectively controlled by the double-axis concentric separation transmission mechanism. When washing, the washing motor drives the impeller to rotate to wash clothes, and when dehydrating, the dehydration motor drives the dehydration barrel to rotate to dehydrate, thereby achieving the washing effect of a fully automatic washing machine. Compared with the traditional fully automatic washing machine, it does not adopt a clutch, a drainage motor, etc., has a simpler structure, simplifies the production process, reduces the production cost, and is convenient for maintenance; compared with the traditional semi-automatic washing and dehydrating machine, the dehydration barrel does not need secondary fixation, is easy to operate, and the dehydration process is controlled by a separate dehydration motor, has high dehydration efficiency, and good dehydration effect; the present invention is provided with a lower fixing device at the bottom of the dehydration barrel, and an upper fixing device is provided on the upper part of the dehydration barrel, thereby ensuring that the dehydration barrel rotates smoothly and does not collide with the barrel body during startup and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 A magnified image of point A;

[0019] Figure 3 It is a structural schematic diagram of the lower fixing device of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the fixing device of the present invention;

[0021] Figure 5 It is a structural schematic diagram of another embodiment of the present invention.

[0022] In the figure, 1, central shaft, 2, first pulley, 3, transmission sleeve, 4, first bearing, 5, second pulley, 6, positioning sleeve, 7, second bearing, 8, first gap, 9, second gap, 10, first oil seal, 11, second oil seal, 12, chassis, 13, barrel, 14, upper cover, 15, control button, 16, dehydration barrel, 17, impeller, 18, dehydration motor, 19, washing motor, 20, nut, 21, positioning convex ring, 22, sealing gasket, 23, mounting ring plate, 24, upper boss, 25, support column, 26, upper frame positioning column, 27, limiting rubber sleeve, 28, double-axis concentric separation transmission mechanism, 29, lower fixing device, 30, upper fixing device, 31, third bearing, 32, fourth bearing, 33, separation ring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described below through specific implementation modes in conjunction with the accompanying drawings.

[0024] As attached Figures 1 to 4An embodiment of a washing machine shown in the figure comprises a chassis 12, a barrel body 13 arranged above the chassis 12, a water inlet pipe arranged on the barrel body 13, a drain pipe arranged on the chassis, an upper cover plate 14 arranged on the top of the barrel body 13 by screws, and a control button 15 arranged on the upper cover plate 14, the upper cover plate 14 is provided with an openable and closable feeding port, a dehydration barrel 16 is rotatably arranged in the barrel body 13, a pulsator 17 is rotatably arranged in the dehydration barrel 16, a dehydration motor 18, a washing motor 19 and a double-axis concentric separation transmission mechanism 28 are arranged in the chassis 12, the double-axis concentric separation transmission mechanism 28 comprises a central shaft 1, a first belt is fixedly arranged at the lower part of the central shaft 1 The upper part of the central shaft 1 is provided with a transmission sleeve 3, and the transmission sleeve 3 is rotatably connected to the central shaft 1 through one or more first bearings 4. The lower part of the transmission sleeve 3 is fixedly provided with a second pulley 5, and the upper part of the transmission sleeve 3 is provided with a positioning sleeve 6, and the positioning sleeve 6 is rotatably connected to the transmission sleeve 3 through one or more second bearings 7; the positioning sleeve 6 is fixedly provided on the bottom wall of the barrel body 13, and the transmission sleeve 3 is fixedly connected to the bottom wall of the dewatering barrel 16; the central shaft 1 is fixedly connected to the pulsator 17 through screws, the dewatering motor 18 is transmission-connected to the second pulley 5, and the washing motor 19 is transmission-connected to the first pulley 2. In addition, the water inlet pipe can also be provided on the upper cover plate 14. The double-axis concentric separation transmission mechanism 28 of the present invention effectively realizes the rotation separation of washing and dehydration. The present invention is provided with two motors, and the washing and dehydration processes are respectively controlled by the double-axis concentric separation transmission mechanism 28. When washing, the washing motor 19 drives the impeller 17 to rotate to wash clothes, and when dehydrating, the dehydration motor 18 drives the dehydration barrel 16 to rotate to dehydrate, thereby achieving the washing effect of a fully automatic washing machine. Compared with a traditional fully automatic washing machine, it does not use a clutch, a drainage motor, etc., has a simpler structure, simplifies the production process, reduces the production cost, and is easy to maintain; compared with a traditional semi-automatic washing machine, the dehydration barrel 16 does not need to be fixed twice, is easy to operate, and the dehydration process is controlled by a separate dehydration motor 18, has high dehydration efficiency, and good dehydration effect.

[0025] Furthermore, the central shaft 1, the transmission sleeve 3 and the positioning sleeve 6 are on the same axis.

[0026] Furthermore, a first gap 8 is provided between the transmission sleeve 3 and the central shaft 1 ; and a second gap 9 is provided between the transmission sleeve 3 and the positioning sleeve 6 .

[0027] Furthermore, a first oil seal 10 is provided between the central shaft 1 and the transmission sleeve 3, and the first oil seal 10 is provided above the first bearing 4 located at the top; a second oil seal 11 is provided between the transmission sleeve 3 and the positioning sleeve 6, and the second oil seal 11 is provided above the second bearing 7 located at the top. The provision of the first oil seal 10 and the second oil seal 11 ensures the overall sealing of the dual-axis concentric separation transmission mechanism 28, thereby achieving the purpose of preventing water leakage.

[0028] Furthermore, there are two first bearings 4 and two second bearings 7, and two first grooves are provided on the inner wall of the transmission sleeve 3. The two first bearings 4 are respectively arranged in the two first grooves and are interference fit with the corresponding first grooves, so that a first gap 8 is formed between the center shaft 1 and the transmission sleeve 3; the first oil seal 10 is arranged in the first groove located at the top; two second grooves are provided on the inner wall of the positioning sleeve 6, and the two second bearings 7 are respectively arranged in the two second grooves and are interference fit with the corresponding second grooves, so that a second gap 9 is formed between the transmission sleeve 3 and the positioning sleeve 6; the second oil seal 11 is arranged in the second groove located at the top. The first bearing 4 and the second bearing 7 are both arranged in two, one above the other, to ensure smooth rotation of the transmission sleeve 3 and the center shaft 1; in addition, the first bearing 4 is interference-set in the corresponding first groove to form a first gap 8 between the center shaft 1 and the transmission sleeve 3, to ensure flexibility in rotation of the center shaft 1; the second bearing 7 is interference-set in the corresponding second groove to form a second gap 9 between the transmission sleeve 3 and the positioning sleeve 6, to ensure flexibility in rotation of the transmission sleeve 3.

[0029] Furthermore, a separation ring 33 is disposed on the outer wall of the central shaft 1 , and the separation ring 33 is disposed between the first oil seal 10 and the first bearing 4 located above.

[0030] Furthermore, the upper portion of the positioning sleeve 6 is connected with a nut 20 via threads, and the positioning sleeve 6 and the barrel body 13 are fixedly connected via the nut 20 .

[0031] Furthermore, a positioning convex ring 21 is fixedly provided outside the positioning sleeve 6, the bottom wall of the barrel body 13 is arranged between the nut 20 and the positioning convex ring 21, and abuts against the nut 20 and the positioning convex ring 21 respectively, and a sealing gasket 22 is arranged between the positioning convex ring 21 and the bottom wall of the barrel body 13.

[0032] Furthermore, the top end of the transmission shaft sleeve 3 is folded outward to form a mounting ring plate 23, and the mounting ring plate 23 is fixedly connected to the dehydration barrel 16 by bolts.

[0033] Furthermore, the dehydration barrel 16 is provided with a lower fixing device 29, and the lower fixing device 29 includes a plurality of support columns 25 and a third bearing 31 fixedly arranged in the barrel body, and the dehydration barrel 16 is rotatably connected to the plurality of support columns 25 through the third bearing 31; the outer ring of the third bearing 31 is fixedly connected to the plurality of support columns 25, and the inner ring of the third bearing 31 is fixedly connected to the dehydration barrel 16. The present invention positions the dehydration barrel 16 through the support columns 25, ensures the rotation stability during its startup and operation, and avoids collision with the barrel body 13 during its rotation.

[0034] Furthermore, a plurality of third grooves are provided on the outer ring of the third bearing 31, and the support column 25 is cooperatedly arranged in the corresponding third grooves. A plurality of fourth grooves are provided on the bottom wall of the dehydration barrel 16, and an upper boss 24 is provided on the inner ring of the third bearing 31, and the upper boss 24 is cooperatedly arranged in the corresponding fourth grooves.

[0035] Furthermore, the upper fixing device 30 includes a plurality of upper frame positioning columns 26 and a fourth bearing 32 fixedly disposed at the bottom of the upper cover plate 14, and the dewatering barrel 16 is rotatably connected to the plurality of upper frame positioning columns 26 via the fourth bearing 32; the outer ring of the fourth bearing 32 is fixedly connected to the plurality of upper frame positioning columns 26, and the inner ring of the fourth bearing is fixedly connected to the dewatering barrel. The present invention positions the dewatering barrel 16 via the upper frame positioning columns 26, thereby ensuring the stability of its rotation during startup and operation, and preventing it from colliding with the barrel body 13 during rotation.

[0036] Furthermore, a limiting rubber sleeve 27 is provided on the outer cover of the upper frame positioning column 26, and the setting of the limiting rubber sleeve 27 plays a shock-absorbing role.

[0037] Furthermore, a brake disc is provided on the rotating shaft of the dehydration motor 18 .

[0038] Furthermore, the first bearing 4 and the second bearing 7 are both ball bearings.

[0039] As another embodiment of a washing machine of the present invention, Figure 5 As shown, both the first bearing 4 and the second bearing 7 are oil-containing bearings.

Claims

1. A washing machine, comprising a chassis (12), a barrel (13), a water inlet pipe, a drain pipe, an upper cover (14), and a control button (15), characterized in that: A dehydration barrel (16) is rotatably disposed in the barrel body (13), a pulsator (17) is rotatably disposed in the dehydration barrel (16), a dehydration motor (18), a washing motor (19) and a double-shaft concentric separation transmission mechanism (28) are disposed in the chassis (12), The double-axis concentric separation transmission mechanism comprises a central axis (1), a first pulley (2) is fixedly arranged at the lower part of the central axis (1), a transmission sleeve (3) is sleeved on the upper part of the central axis (1), the transmission sleeve (3) is rotatably connected to the central axis (1) via one or more first bearings (4), a second pulley (5) is fixedly arranged at the lower part of the transmission sleeve (3), a positioning sleeve (6) is sleeved on the upper part of the transmission sleeve (3), and the positioning sleeve (6) is rotatably connected to the transmission sleeve (3) via one or more second bearings (7); The positioning sleeve (6) is fixedly arranged on the bottom wall of the barrel body (13), and the transmission sleeve (3) is fixedly connected to the bottom wall of the dehydration barrel (16); the central shaft (1) is fixedly connected to the impeller (17), the dehydration motor (18) is transmission-connected to the second pulley (5), and the washing motor (19) is transmission-connected to the first pulley (2); The upper part of the positioning sleeve (6) is connected to a nut (20) via a thread, and the positioning sleeve (6) and the barrel body (13) are fixedly connected via the nut (20); A positioning convex ring (21) is fixedly disposed outside the positioning sleeve (6); the bottom wall of the barrel body (13) is disposed between the nut (20) and the positioning convex ring (21); and a sealing gasket (22) is disposed between the positioning convex ring (21) and the bottom wall of the barrel body (13); The dehydration barrel (16) is provided with a lower fixing device (29), the lower fixing device (29) comprising a plurality of supporting columns (25) fixedly arranged in the barrel body (13) and a third bearing (31), the dehydration barrel (16) and the plurality of supporting columns (25) are rotatably connected via the third bearing (31); A plurality of the support columns (25) are arranged on the outside of the dual-axis concentric separation transmission mechanism (28); It also includes an upper fixing device (30), the upper fixing device (30) including a plurality of upper frame positioning columns (26) and a fourth bearing (32) fixedly arranged at the bottom of the upper cover plate (14), and the dewatering barrel (16) is rotatably connected to the plurality of upper frame positioning columns (26) via the fourth bearing (32); The top end of the transmission shaft sleeve (3) is folded outward to form a mounting ring plate (23), and the mounting ring plate (23) is fixedly connected to the dewatering barrel (16); The upper enclosure frame positioning column (26) is provided with a limiting rubber sleeve (27) on its outer cover; A first gap (8) is provided between the transmission sleeve (3) and the central shaft (1); a second gap (9) is provided between the transmission sleeve (3) and the positioning sleeve (6); A first oil seal (10) is also provided between the central shaft (1) and the transmission sleeve (3), and the first oil seal (10) is provided above the first bearing (4) located at the top; a second oil seal (11) is also provided between the transmission sleeve (3) and the positioning sleeve (6), and the second oil seal (11) is provided above the second bearing (7) located at the top.

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