Motor speed increasing device and vacuum cleaner

Abstract

The present invention belongs to the technical field of dust collecting devices, and discloses a motor speed increasing device and a dust collector, wherein the motor speed increasing device comprises a motor, a fan blade, and a planetary gear speed increasing mechanism, a belt drive speed increasing mechanism and a gear pair speed increasing mechanism arranged between the motor and the fan blade, wherein the ring gear structure of the planetary gear speed increasing mechanism is connected to the output shaft of the motor, the belt drive speed increasing mechanism comprises a driving pulley, a driven pulley and a transmission belt, the transmission belt is wound around the driving pulley and the driven pulley, the driving pulley is connected to the sun gear of the planetary gear speed increasing mechanism, the gear pair speed increasing mechanism comprises a driving gear and a driven gear meshing with each other, the driving gear is connected to the driven pulley, the driven gear is connected to the fan blade, and the dust collector comprises the above-mentioned motor speed increasing device. In the present invention, the three-stage speed increasing mechanism between the motor and the fan blade has a compact structure, has a more efficient speed increasing effect, and the transmission process is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of dust collecting devices, and in particular to a motor speed increasing device and a dust collector. Background Art

[0002] When the existing dust collecting device is powered on, the fan blades rotate synchronously with the motor shaft and quickly discharge the air in the dust cup, thus forcing a large air pressure difference to form inside and outside the dust cup, thereby achieving the purpose of effectively absorbing dust.

[0003] However, in the existing dust collection device, the fan blades are directly connected to the motor assembly. Without increasing the power of the motor assembly, the wind force is insufficient to ensure a low vacuum degree and the power consumption is high. Therefore, it is necessary to design a speed increasing mechanism to increase the speed.

[0004] The speed increasing mechanism in the existing dust collecting device has a poor speed increasing effect, insufficient stability in the transmission process, and affects the air flow space on one side of the fan blade. Summary of the invention

[0005] The object of the present invention is to provide a motor speed increasing device and a vacuum cleaner, which can achieve a stronger speed increasing effect with a compact structure and a more stable transmission process.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A motor speed increasing device, comprising:

[0008] Motor;

[0009] Fan blades;

[0010] A planetary gear speed increasing mechanism is arranged between the motor and the fan blades, and a ring gear structure of the planetary gear speed increasing mechanism is connected to an output shaft of the motor;

[0011] A belt drive speed increasing mechanism is arranged between the planetary gear speed increasing mechanism and the fan blades, the belt drive speed increasing mechanism comprises a driving pulley, a driven pulley and a transmission belt, the transmission belt is wound around the driving pulley and the driven pulley, the driving pulley is connected to the sun gear of the planetary gear speed increasing mechanism, and the diameter of the driving pulley is greater than the diameter of the driven pulley;

[0012] A gear pair speed increasing mechanism is arranged between the belt drive speed increasing mechanism and the fan blades, and the gear pair speed increasing mechanism includes a driving gear and a driven gear meshing with each other, the driving gear is connected to the driven pulley, the driven gear is connected to the fan blades, and the diameter of the driving gear is greater than the diameter of the driven gear.

[0013] Preferably, the ring gear structure includes a sleeve portion, a baffle portion and a ring gear portion, the sleeve portion is connected to one side of the baffle portion and is sleeved on the outer side of the output shaft of the motor, the ring gear portion is connected to the other side of the baffle portion, the sun gear is located in the ring gear portion, and the planetary gears of the planetary gear speed increase mechanism are meshed with the ring gear portion and the sun gear at the same time.

[0014] Preferably, the diameter of the driving pulley is larger than the diameter of the sun gear, and the planetary gear is sandwiched between the baffle portion and the driving pulley.

[0015] Preferably, it further comprises a support rod, wherein the support rod is arranged on the housing of the motor, and the driven pulley is rotatably arranged on the support rod.

[0016] Preferably, the driving gear is rotatably disposed on the support rod.

[0017] Preferably, the support rod includes a first rod segment, a second rod segment and a third rod segment which are coaxially connected in sequence, the diameters of the first rod segment, the second rod segment and the third rod segment decrease in sequence, the first rod segment is connected to the housing of the motor, the second rod segment is configured to avoid the ring gear structure, and the driven pulley is rotatably arranged on the third rod segment.

[0018] Preferably, it further comprises a support shaft, wherein the support shaft is arranged on the output shaft of the motor, and the fan blades are rotatably arranged on the support shaft.

[0019] Preferably, it further includes a support sleeve, wherein the support sleeve and the fan blades are respectively connected to both sides of the driven gear, the support sleeve is sleeved on the outer side of the output shaft of the motor, and the sun gear and the driving pulley are both sleeved on the outer side of the support sleeve.

[0020] Preferably, the output shaft of the motor, the sun gear, the driving pulley, the driven gear and the fan blades are coaxially arranged.

[0021] A vacuum cleaner comprises the above-mentioned motor speed increasing device.

[0022] Beneficial effects of the present invention:

[0023] The three-stage speed increasing mechanism between the motor and the fan blades has a compact structure. The power output by the motor is first steadily increased by the planetary gear speed increasing mechanism, then increased by the belt drive speed increasing mechanism for two stages, and finally increased by the gear pair speed increasing mechanism for three stages, which has a more efficient speed increasing effect. The larger planetary gear speed increasing mechanism is arranged away from the fan blades, so that a suction channel is formed between the planetary gear speed increasing mechanism and the fan blades, leaving air flow space behind the fan blades. The belt drive speed increasing mechanism is sandwiched between the planetary gear speed increasing mechanism and the gear pair speed increasing mechanism, so that the transmission belt is not easily affected by wind and derailed, and the transmission process is more stable. In addition, through the two-stage speed increasing, the belt drive speed increasing mechanism and the three-stage gear pair speed increasing mechanism are selected to cooperate, so that the center of the suction channel returns to the extension direction of the motor output shaft, which is not only conducive to the formation of the suction channel, but also optimizes the layout space of the vacuum cleaner, avoids excessive extension in the lateral direction, and makes the speed increasing structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a motor speed increasing device according to an embodiment of the present invention;

[0025] Figure 2 is a side view of a motor speed increasing device according to an embodiment of the present invention;

[0026] Figure 3 is a cross-sectional view of a motor speed increasing device according to an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the motor, the support rod and the support shaft according to the embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the motor and the planetary gear speed increasing mechanism according to the embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the ring gear structure and the planetary gear matching according to an embodiment of the present invention;

[0030] Figure 7 is a structural schematic diagram of the gear ring structure according to an embodiment of the present invention;

[0031] Figure 8 It is a schematic structural diagram of the cooperation between the belt transmission speed increasing mechanism, the sun gear and the driving gear according to an embodiment of the present invention;

[0032] Fig. 9 It is a schematic structural diagram of the gear pair speed increasing mechanism, driven pulley, support sleeve and fan blades according to an embodiment of the present invention.

[0033] In the figure:

[0034] 1. Motor; 11. Output shaft;

[0035] 2. Fan blades;

[0036] 3. Planetary gear speed increasing mechanism; 31. Ring gear structure; 311. Shaft sleeve; 312. Baffle; 313. Ring gear; 32. Sun gear; 33. Planetary gear;

[0037] 4. Belt drive speed increasing mechanism; 41. Driving pulley; 42. Driven pulley; 43. Transmission belt;

[0038] 5. Gear pair speed increasing mechanism; 51. Driving gear; 52. Driven gear;

[0039] 6. Support rod; 61. First rod section; 62. Second rod section; 63. Third rod section;

[0040] 7. Support shaft;

[0041] 8. Support sleeve;

[0042] 9. Isolation sleeve. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0047] like Figure 1-Figure 9 As shown, the present invention provides a motor speed increasing device, including a motor 1, a fan blade 2, and a planetary gear speed increasing mechanism 3, a belt transmission speed increasing mechanism 4 and a gear pair speed increasing mechanism 5 arranged between the motor 1 and the fan blade 2, the planetary gear speed increasing mechanism 3 is arranged between the motor 1 and the fan blade 2, the gear ring structure 31 of the planetary gear speed increasing mechanism 3 is connected to the output shaft 11 of the motor 1, the belt transmission speed increasing mechanism 4 is arranged between the planetary gear speed increasing mechanism 3 and the fan blade 2, and the belt transmission speed increasing mechanism 4 includes a driving pulley 41, a driven pulley 42 and a transmission belt 4 3, the transmission belt 43 is wound around the driving pulley 41 and the driven pulley 42, the driving pulley 41 is connected to the sun gear 32 of the planetary gear speed increasing mechanism 3, the diameter of the driving pulley 41 is larger than the diameter of the driven pulley 42, the gear pair speed increasing mechanism 5 is arranged between the belt transmission speed increasing mechanism 4 and the fan blade 2, the gear pair speed increasing mechanism 5 includes a driving gear 51 and a driven gear 52 meshing with each other, the driving gear 51 is connected to the driven pulley 42, the driven gear 52 is connected to the fan blade 2, and the diameter of the driving gear 51 is larger than the diameter of the driven gear 52.

[0048] In the present invention, the three-stage speed increasing mechanism between the motor 1 and the fan blades 2 has a compact structure. The power output by the motor 1 is first steadily accelerated by the planetary gear speed increasing mechanism 3, then accelerated by the belt transmission speed increasing mechanism 4 at two stages, and finally accelerated by the gear pair speed increasing mechanism 5 at three stages, which has a more efficient speed increasing effect. The larger planetary gear speed increasing mechanism 3 is arranged away from the fan blades 2, so that an air suction channel is formed between the planetary gear speed increasing mechanism 3 and the fan blades 2, leaving air flow space behind the fan blades 2. The belt transmission speed increasing mechanism 4 is sandwiched between the planetary gear speed increasing mechanism 3 and the gear pair speed increasing mechanism 5, so that the transmission belt 43 is not easily derailed by the wind, and the transmission process is more stable.

[0049] The specific structure of the motor speed increasing device and the vacuum cleaner of the present invention is described below:

[0050] The motor speed increasing device of the present invention specifically includes a motor 1, fan blades 2, a planetary gear speed increasing mechanism 3, a belt drive speed increasing mechanism 4, a gear pair speed increasing mechanism 5, a support rod 6, a support shaft 7 and a support sleeve 8. The planetary gear speed increasing mechanism 3, the belt drive speed increasing mechanism 4 and the gear pair speed increasing mechanism 5 are arranged between the motor 1 and the fan blades 2.

[0051] Specifically, the planetary gear speed increasing mechanism 3 includes a ring gear structure 31, planetary gears 33 and a sun gear 32. The planetary gears 33 and the sun gear 32 are both located in the ring gear structure 31. The sun gear 32 is located at the center of the ring gear structure 31. The planetary gears 33 are located between the ring gear structure 31 and the sun gear 32, and are meshed with the internal tooth structure of the ring gear structure 31 and the external tooth structure of the sun gear 32.

[0052] More specifically, the gear ring structure 31 includes a sleeve portion 311, a baffle portion 312 and a gear ring portion 313. The sleeve portion 311 is connected to one side of the baffle portion 312 and is sleeved on the outside of the output shaft 11 of the motor 1. The gear ring portion 313 is connected to the other side of the baffle portion 312. The sun gear 32 is located in the gear ring portion 313. The planetary gears 33 of the planetary gear speed increasing mechanism 3 are meshed with the gear ring portion 313 and the sun gear 32 at the same time. By providing the sleeve portion 311, the gear ring structure 31 and the output shaft 11 of the motor 1 can be more conveniently disassembled and assembled. By providing the baffle portion 312, the motor 1 can be effectively protected and dust can be prevented from entering the inside of the motor 1.

[0053] In this embodiment, three planetary gears 33 are provided, and the three planetary gears 33 are evenly distributed on the outer periphery of the sun gear 32, so that when the planetary gear speed increasing mechanism 3 is running, it does not swing and the acceleration is stable.

[0054] Specifically, the belt drive speed increasing mechanism 4 includes a driving pulley 41, a driven pulley 42 and a transmission belt 43. The diameter of the driving pulley 41 is larger than the diameter of the driven pulley 42. The two are located in the same plane and are arranged at intervals. Annular grooves are provided on the outer peripheral walls of the driving pulley 41 and the driven pulley 42, and the transmission belt 43 is limited in the annular grooves.

[0055] More specifically, the diameter of the driving pulley 41 is larger than the diameter of the sun gear 32, and the planetary gear 33 is sandwiched between the baffle portion 312 and the driving pulley 41. The above arrangement can cooperate with the baffle portion 312 to limit and block the planetary gear 33.

[0056] In this embodiment, the driving pulley 41 and the sun gear 32 are integrally formed, so that the assembly and transmission of the planetary gear speed increasing mechanism 3 and the belt transmission speed increasing mechanism 4 are more accurate and reliable.

[0057] Specifically, the support rod 6 is disposed on the housing of the motor 1, and the driven pulley 42 is rotatably disposed on the support rod 6. By providing the support rod 6, the driven pulley 42 can be stably supported, which facilitates the alignment and assembly of the motor 1 and the driven pulley 42.

[0058] Specifically, the gear pair speed increasing mechanism 5 includes a driving gear 51 and a driven gear 52 meshing with each other, the diameter of the driving gear 51 is larger than the diameter of the driven gear 52 , and the driven gear 52 is coaxially connected to the fan blade 2 .

[0059] More specifically, the driving gear 51 is rotatably disposed on the support rod 6. The driven pulley 42 and the driving gear 51 are both supported by the support rod 6, so that the transmission cooperation between the two is more stable.

[0060] In this embodiment, the support rod 6 is integrally formed on the housing of the motor 1 and is parallel to the output shaft 11 of the motor 1. The driven pulley 42 and the driving gear 51 are integrally formed, so that the installation of the belt drive speed increasing mechanism 4 and the gear pair speed increasing mechanism 5 relative to the motor 1 is more stable, and the assembly and transmission of the belt drive speed increasing mechanism 4 and the gear pair speed increasing mechanism 5 are more precise and reliable.

[0061] More specifically, the support rod 6 includes a first rod segment 61, a second rod segment 62 and a third rod segment 63 which are coaxially connected in sequence, the diameters of the first rod segment 61, the second rod segment 62 and the third rod segment 63 are reduced in sequence, the first rod segment 61 is connected to the housing of the motor 1, the second rod segment 62 is configured to avoid the ring gear structure 31, and the driven pulley 42 is rotatably arranged on the third rod segment 63. The above arrangement reduces the spacing between the support rod 6 and the planetary gear speed increasing mechanism 3 by the second rod segment 62 avoiding the ring gear structure 31, so that the driven pulley 42 and the driving gear 51 on the support rod 6 are closer to the axis of the output shaft 11 of the motor 1, making the overall structure of the motor speed increasing device more compact.

[0062] Specifically, the support shaft 7 is disposed on the output shaft 11 of the motor 1, and the fan blade 2 is rotatably disposed on the support shaft 7. By providing the support shaft 7, the fan blade 2 can be reliably supported and can be freely rotated relative to the output shaft 11 of the motor 1.

[0063] In this embodiment, the support shaft 7 passes through the fan blade 2, the driven gear 52, the driving pulley 41, the sun gear 32 and the baffle portion 312 in sequence and is then plugged and fixedly connected to the output shaft 11 of the motor 1.

[0064] Specifically, the support sleeve 8 and the fan blade 2 are respectively connected to the two sides of the driven gear 52, the support sleeve 8 is sleeved on the outside of the output shaft 11 of the motor 1, and the sun gear 32 and the driving pulley 41 are both sleeved on the outside of the support sleeve 8. By providing the support sleeve 8, the driven gear 52 can be reliably supported.

[0065] In this embodiment, the support sleeve 8, the driven gear 52 and the fan blades 2 are integrally formed, and the support shaft 7 is passed through the axis center thereof. In addition, in order to avoid wear of the support shaft 7, an isolation sleeve 9 can be pre-installed on the outer side of the support shaft 7, and the support sleeve 8, the driven gear 52 and the fan blades 2 are installed on the isolation sleeve 9.

[0066] Specifically, the output shaft 11 of the motor 1, the sun gear 32, the driving pulley 41, the driven gear 52 and the fan blade 2 are coaxially arranged. The above arrangement makes the output shaft 11 of the motor 1 and the fan blade 2 coaxial, saving the lateral space of the overall structure, so that the wind force is more concentrated on the central axis.

[0067] The vacuum cleaner of the present invention includes the above-mentioned motor speed increasing device and cyclone separation structure. The air inlet end of the fan blade 2 is connected to the air outlet end of the cyclone separation structure, and dust is removed by suction. Its specific structure and working principle refer to the prior art and will not be repeated here.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A motor speed increasing device, characterized in that: include: Motor (1); Fan blades (2); A planetary gear speed increasing mechanism (3) is arranged between the motor (1) and the fan blade (2), and a ring gear structure (31) of the planetary gear speed increasing mechanism (3) is connected to an output shaft (11) of the motor (1); A belt-driven speed-increasing mechanism (4) is arranged between the planetary gear speed-increasing mechanism (3) and the fan blade (2), the belt-driven speed-increasing mechanism (4) comprising a driving pulley (41), a driven pulley (42) and a transmission belt (43), the transmission belt (43) being wound around the driving pulley (41) and the driven pulley (42), the driving pulley (41) being connected to the sun gear (32) of the planetary gear speed-increasing mechanism (3), and the diameter of the driving pulley (41) being larger than the diameter of the driven pulley (42); A gear pair speed increasing mechanism (5) is arranged between the belt drive speed increasing mechanism (4) and the fan blade (2), the gear pair speed increasing mechanism (5) comprising a driving gear (51) and a driven gear (52) meshing with each other, the driving gear (51) being connected to the driven pulley (42), the driven gear (52) being connected to the fan blade (2), and the diameter of the driving gear (51) being larger than the diameter of the driven gear (52); It also includes a support rod (6), wherein the support rod (6) is arranged on the housing of the motor (1), and the driven pulley (42) is rotatably arranged on the support rod (6); It also includes a support sleeve (8), wherein the support sleeve (8) and the fan blade (2) are respectively connected to the two sides of the driven gear (52), the support sleeve (8) is sleeved on the outside of the output shaft (11) of the motor (1), and the sun gear (32) and the driving pulley (41) are both sleeved on the outside of the support sleeve (8).

2. The motor speed increasing device according to claim 1, characterized in that: The gear ring structure (31) comprises a shaft sleeve portion (311), a baffle portion (312) and a gear ring portion (313); the shaft sleeve portion (311) is connected to one side of the baffle portion (312) and is sleeved on the outer side of the output shaft (11) of the motor (1); the gear ring portion (313) is connected to the other side of the baffle portion (312); the sun gear (32) is located in the gear ring portion (313); and the planetary gears (33) of the planetary gear speed increasing mechanism (3) are meshed with the gear ring portion (313) and the sun gear (32) at the same time.

3. The motor speed increasing device according to claim 2, characterized in that: The diameter of the driving pulley (41) is greater than the diameter of the sun gear (32), and the planetary gear (33) is sandwiched between the baffle portion (312) and the driving pulley (41).

4. The motor speed increasing device according to claim 1, characterized in that: The driving gear (51) is rotatably disposed on the support rod (6).

5. The motor speed increasing device according to claim 1, characterized in that: The support rod (6) comprises a first rod segment (61), a second rod segment (62) and a third rod segment (63) which are coaxially connected in sequence, the diameters of the first rod segment (61), the second rod segment (62) and the third rod segment (63) are reduced in sequence, the first rod segment (61) is connected to the housing of the motor (1), the second rod segment (62) is configured to avoid the gear ring structure (31), and the driven pulley (42) is rotatably arranged on the third rod segment (63).

6. The motor speed increasing device according to claim 1, characterized in that: It also comprises a support shaft (7), wherein the support shaft (7) is arranged on the output shaft (11) of the motor (1), and the fan blade (2) is rotatably arranged on the support shaft (7).

7. The motor speed increasing device according to claim 1, characterized in that: The output shaft (11) of the motor (1), the sun gear (32), the driving pulley (41), the driven gear (52) and the fan blade (2) are coaxially arranged.

8. A vacuum cleaner, characterized in that: It comprises the motor speed increasing device as described in any one of claims 1-7.

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