Motor and food processor

Abstract

The utility model relates to a motor and a food processor. The motor comprises a rotor, a carbon brush support, a carbon brush and a carbon powder storage box. The rotor comprises a rotating shaft and a commutator sleeved on the outer side of the rotor. The carbon brush support is provided with a rotating shaft hole for the rotating shaft to pass through. The carbon brush is installed on the carbon brush support, the carbon brush is opposite to the commutator in the radial direction of the rotating shaft, and the carbon brush comprises a contact end making contact with the commutator. And the carbon powder storage box is arranged around the carbon brush, the carbon powder storage box is provided with an opening part for carbon powder to enter, and the opening part faces the commutator. The food processor comprises a motor. According to the scheme, the interference of carbon powder on the electrical performance of the motor can be reduced or eliminated, and the mechanical wear can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small household appliances, in particular to a motor and a food processor. BACKGROUND

[0002] Some food processors, the motor adopts a brush motor including a carbon brush, the brush motor will generate a large amount of carbon powder during long-term use, and the accumulation of carbon powder will interfere with the electrical performance of the motor. SUMMARY

[0003] The present application provides a motor and a food processor, which can reduce or eliminate the interference of carbon powder on the electrical performance of the motor, and also can reduce mechanical wear.

[0004] A motor, comprising:

[0005] a rotor comprising a rotating shaft and a commutator sleeved outside the rotating shaft;

[0006] a carbon brush support provided with a rotating shaft hole through which the rotating shaft passes;

[0007] a carbon brush mounted on the carbon brush support, the carbon brush being opposite to the commutator along the radial direction of the rotating shaft, the carbon brush comprising a contact end in contact with the commutator;

[0008] a carbon powder storage box, the carbon brush being entirely or partially surrounded by the carbon powder storage box, the carbon powder storage box being provided with a mouth portion through which carbon powder enters, the mouth portion facing the commutator.

[0009] The motor provided by the present application, when the rotating shaft and the commutator rotate coaxially, the carbon powder generated by the friction between the contact end and the commutator will be thrown to the periphery of the commutator under the action of the centrifugal force of the commutator, at this time, since the mouth portion of the carbon powder storage box faces the commutator, the carbon powder can enter the carbon powder storage box through the mouth portion, thus the amount of carbon powder accumulated on the inner surface of the carbon brush support can be reduced, and the occurrence probability of electrical interference and mechanical wear caused by the accumulation of carbon powder can be reduced.

[0010] Optionally, the carbon brush support comprises an inner side surface opposite to the commutator along the radial direction of the rotating shaft, and the carbon powder storage box is attached to the inner side surface. In this way, the carbon powder storage box can shield the inner side surface, so that the inner side surface is isolated from the commutator, and the carbon powder is prevented from adhering to the inner side surface and conducting between the carbon brush and the inner side surface through the accumulated carbon powder.

[0011] Optionally, the carbon powder storage box comprises a partition plate arranged inside the carbon powder storage box and extending around the carbon brush, and the partition plate is provided with gaps on the inner and outer sides thereof for storing carbon powder. The partition plate can increase the area of the inner surface of the carbon powder storage box, so that the carbon powder storage box can collect more carbon powder.

[0012] Optionally, the toner collection box includes an inner housing and an outer housing surrounding the carbon brush. A partition is disposed between the inner housing and the outer housing. In the radial direction of the rotating shaft, the end face of the partition facing the commutator does not extend beyond the inner housing or the end face of the outer housing facing the commutator. That is, the partition does not extend beyond the inner housing and the outer housing, thus preventing the partition from obstructing toner from entering the toner collection box.

[0013] Optionally, the outer casing also has a groove with an opening facing the commutator. This can further increase the storage space of the toner cartridge, and correspondingly, more inner surface for toner to adhere to can be formed inside the toner cartridge.

[0014] Optionally, along the radial direction of the rotating shaft, the partition, the inner housing, and the outer housing are flush with each end face of the commutator, and each end face is further away from the commutator than the contact end. In this way, the toner, under the centrifugal force of the commutator, disperses to the periphery of the commutator, making it easier for the toner to enter the toner collection box.

[0015] Optionally, the motor further includes a stator surrounding the outside of the rotor, the stator comprising a stator core and stator windings mounted on the stator core, and the carbon brush holder being connected to the stator core. This ensures the relative fixation of the carbon brush holder and the stator core, and also improves the coaxiality of the shaft hole and the shaft.

[0016] Optionally, the motor further includes a lower bracket through which the lower end of the rotating shaft passes, so the lower bracket is also connected to the stator core. This ensures the relative fixation of the lower bracket and the stator core, and the lower bracket's positioning reference is consistent with that of the carbon brush bracket, which also helps to improve the coaxiality of the through hole and the rotating shaft hole.

[0017] Optionally, the motor further includes a fan blade, which is circumferentially connected to the rotating shaft. The fan blade can accelerate airflow to dissipate heat from the stator windings.

[0018] A food processor, comprising:

[0019] Base;

[0020] A cup assembly is mounted on the base, the cup assembly including a cup cavity and a stirring blade disposed within the cup cavity;

[0021] The motor described in any of the above description is drive-connected to the mixing blade. This food processor offers enhanced electrical safety.

[0022] Optionally, the cup assembly includes a cup body and a cup holder disposed at the bottom of the cup body, and the motor is housed within the cup holder. With the motor located within the cup holder, the cup assembly is a direct-drive type. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a food processor shown in an exemplary embodiment of this application;

[0024] Figure 2 yes Figure 1 The image shows a cross-sectional view of the food processor.

[0025] Figure 3 This is an exploded view of the motor;

[0026] Figure 4 This is a cross-sectional view of the motor;

[0027] Figure 5 This is an assembly diagram of the carbon brush, carbon brush holder, and toner storage box. Detailed Implementation

[0028] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0029] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0030] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a food processor 100 shown as an exemplary embodiment of this application. Figure 2 for Figure 1 The image shows a cross-sectional view of the food processor 100.

[0031] This application provides a food processor 100, which includes a base 10 and a cup assembly 20 assembled on the base 10. For example, the base 10 and the cup assembly 20 can be assembled in a detachable manner, but are not limited to this. In this embodiment, the food processor 100 also includes a soundproof cover 30, which covers the outside of the cup assembly 20 to isolate noise during food blending. The soundproof cover 30 can be supported or snapped onto the base 10, and a sealing element can be provided at the contact point between the soundproof cover 30 and the base 10 to seal the gap between them. The sealing element can be located on the soundproof cover 30 or on the base 10.

[0032] The cup assembly 20 includes a cup cavity 200 and a stirring blade 21 disposed within the cup cavity 200. The cup cavity 200 is used to hold food, and the stirring blade 21 is used to stir the food. In one example, the cup assembly 20 includes a cup body 22 and a cup seat 23 disposed at the bottom of the cup body 22. The cup body 22 forms the cup cavity 200, and the cup seat 23 is supported at the bottom of the cup body 22. The cup seat 23 includes an upper coupler 230, and the base 10 includes a lower coupler 11. The upper coupler 230 is coupled to the lower coupler 11.

[0033] The base 10 also includes control components such as a control panel 12 and a circuit board 13. The control panel 12 is electrically connected to the circuit board 13. The control panel 12 allows the user to input control commands, and the circuit board 13 receives the control commands. The control cup assembly 20 then executes the cooking program corresponding to the control commands.

[0034] The food processor 100 also includes a motor 40, which drives the mixing blade 21 to rotate. The motor 40 can be located on the base 10. In this embodiment, the motor 40 is located inside the cup holder 23. The rotor of the motor 40 passes through the bottom of the cup body 22 into the cup cavity 200 and is connected to the blade shaft of the mixing blade 21 to drive the mixing blade 21 to rotate.

[0035] Please refer to Figure 3 and Figure 4 , Figure 3 This is an exploded view of motor 40. Figure 4 This is a cross-sectional view of motor 40.

[0036] The motor 40 includes a rotor 41, a stator 42, carbon brushes 43, a carbon brush holder 44, and a lower holder 45. The stator 42 is arranged around the rotor 41, and the motor 40 is an external stator motor.

[0037] The rotor 41 includes a shaft 410 and a commutator 411 fitted on the outside of the shaft 410. The commutator 411 rotates synchronously with the shaft 410. The stator 42 includes a stator core 420 and a stator winding 421. The stator core 420 is provided with stator slots (not shown), and the stator winding 421 is assembled in the stator slots.

[0038] like Figure 4 As shown, the carbon brush holder 44 has a shaft hole 440 through which the rotor 41 passes; more precisely, the shaft 410 passes through the shaft hole 440. The carbon brush 43 is mounted on the carbon brush holder 44 and is radially opposite the commutator 411 along the shaft 410. The carbon brush 43 includes a contact end 430 for contacting the commutator 411. The contact end 430 can be kept in contact with the commutator 411 by the force applied by the spring 47. During the contact process between the contact end 430 and the commutator 411, carbon dust is generated due to the wear of the contact end 430.

[0039] exist Figure 4 In the illustrated embodiment, the carbon brush holder 44 has a carbon brush receiving cavity 441, in which the carbon brush 43 is housed. The carbon brush receiving cavity 441 is configured to extend along the length of the carbon brush 43, thereby providing a limit for the carbon brush 43 and a guide for its movement, ensuring reliable contact between the carbon brush 43 and the commutator 411. A spring 47 may be disposed in the carbon brush receiving cavity 441 and pressed against the end of the carbon brush 43 facing away from the contact end 430.

[0040] The motor 40 also includes a toner collection box 46, which surrounds the carbon brush 43. For example, the carbon brush 43 is completely surrounded by the toner collection box 46, or it is partially surrounded by the toner collection box 46. In this embodiment, the former is used. The toner collection box 46 has an opening 460 for toner to enter, which faces the commutator 411.

[0041] As described above, when the shaft 410 rotates coaxially with the commutator 411, the toner generated by the friction between the contact end 430 and the commutator 411 will be thrown to the periphery of the commutator 411 under the action of the centrifugal force of the commutator 411. At this time, since the opening 460 of the toner collection box 46 faces the commutator 411, the toner can enter the toner collection box 46 through the opening 460. Therefore, the amount of toner accumulated on the inner surface of the brush holder 44 can be reduced, and the probability of electrical interference and mechanical wear caused by toner accumulation can be reduced.

[0042] In one embodiment, the brush holder 44 includes an inner surface 442 that is radially opposite to the commutator 411 along the shaft 410, and the toner collection box 46 is attached to the inner surface 442. This arrangement allows the toner collection box 46 to shield the inner surface 442, isolating it from the commutator 411, preventing toner from adhering to the inner surface 442, and preventing the inner surface 442 from becoming conductive with the brush 43 through accumulated toner.

[0043] exist Figure 4In the embodiment shown, the carbon brush holder 44 has an annular protrusion 443 protruding towards the commutator 411 on one side surface, which is the inner side surface 442. The carbon brush receiving cavity 441 is formed at the center of the annular protrusion 443. The toner storage box 46 is sleeved on the annular protrusion 443 and fits against the inner side surface 442.

[0044] Please combine Figure 4 and Figure 5 , Figure 5 This is an assembly diagram of the carbon brush 43, carbon brush holder 44, and toner storage box 46.

[0045] In one embodiment, the toner collection box 46 includes a partition 461 disposed inside the toner collection box 46 and extending around the carbon brush 43. The partition 461 has gaps on its inner and outer sides for collecting toner. The partition 461 increases the surface area of ​​the inner surface of the toner collection box 46, thereby allowing the toner collection box 46 to collect more toner. The toner can be electrostatically attracted to the inner surface of the toner collection box 46. Furthermore, by providing the partition 461 inside the toner collection box 46, the creepage distance between the toner and the carbon brush 43 inside the toner collection box 46 can also be increased. The number of partitions 461 is not limited; one or more partitions can be provided.

[0046] In one embodiment, such as Figure 5 As shown, the toner collection box 46 includes an inner shell 462 and an outer shell 463 surrounding the carbon brush 43. A partition 461 is disposed between the inner shell 462 and the outer shell 463. In the radial direction of the rotating shaft 410, the end face of the partition 461 facing the commutator 411 does not extend beyond the inner shell 462 or the end face of the outer shell 463 facing the commutator 411. That is, the partition 461 does not extend beyond the inner shell 462 and the outer shell 463, thus preventing the partition 461 from obstructing toner from entering the toner collection box 46.

[0047] In this embodiment, the end face of the partition 461 facing the commutator 411 is flush with the end faces of the inner housing 462 and the outer housing 463 facing the commutator 411. All three are arranged with equal radial dimensions along the shaft 410, and each end face is further away from the commutator 411 than the contact end 430. In other words, the end faces of the partition 461, inner housing 462, and outer housing 463 are further back than the contact end 430. This causes the toner to disperse towards the periphery of the commutator 411 under the centrifugal force of the commutator 411, making it easier for the toner to enter the toner collection box 46.

[0048] Please continue to refer to this. Figure 5In one embodiment, the outer casing 463 is further provided with a groove 4630 with an opening facing the commutator 411, which can further increase the storage space of the toner storage box 46 and correspondingly form more inner surfaces in the toner storage box 46 where toner can adhere.

[0049] In one embodiment, such as Figure 4 As shown, the carbon brush holder 44 is connected to the stator core 420, and the connection method includes, but is not limited to, screw connection. This ensures the relative fixation of the carbon brush holder 44 and the stator core 420, and also improves the coaxiality of the shaft hole 440 and the shaft 410.

[0050] In one embodiment, the lower bracket 45 is further provided with a through hole 450, through which the lower end of the rotating shaft 410 passes. The lower bracket 45 is connected to the stator core 420, and the connection method includes, but is not limited to, screw connection. This ensures the relative fixation of the lower bracket 45 and the stator core 420, and the lower bracket 45 and the carbon brush holder 44 are aligned, which also helps improve the coaxiality of the through hole 450 and the rotating shaft hole 440. The motor 40 can be fixed within the cup holder 23 via the carbon brush holder 44 and / or the lower bracket 45.

[0051] In one embodiment, such as Figure 3 and Figure 4 As shown, the motor 40 also includes a fan blade 48, which is connected to the lowermost end of the rotating shaft 410 and is circumferentially connected to the rotating shaft 410. The fan blade 48 can accelerate airflow to dissipate heat from the stator winding 421.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An electric machine characterized in that, The motor (40) further comprises a stator (42) surrounding the outside of the rotor (41), the stator (42) comprising a stator core (420) and a stator winding (421) mounted on the stator core (420), the carbon brush support (44) being connected with the stator core (420). The carbon brush support (44) comprises an inner side (442) opposite to the commutator (411) along the radial direction of the rotating shaft (410), and the carbon powder storage box (46) is attached to the inner side (442). The carbon powder storage box (46) comprises a partition plate (461) arranged inside the carbon powder storage box (46) and extending around the carbon brush (43), and gaps for storing carbon powder are arranged on the inner and outer sides of the partition plate (461). The carbon powder storage box (46) comprises an inner housing (462) and an outer housing (463) surrounding the carbon brush (43), and the partition plate (461) is arranged between the inner housing (462) and the outer housing (463), and in the radial direction of the rotating shaft (410), the end face of the partition plate (461) facing the commutator (411) does not exceed the end face of the inner housing (462) facing the commutator (411) and the end face of the outer housing (463) facing the commutator (411). The outer housing (463) is further provided with a groove with an opening facing the commutator (411); and / or 2. The electric machine of claim 1, wherein, In the radial direction of the rotating shaft (410), the end faces of the partition plate (461), the inner housing (462), and the outer housing (463) facing the commutator (411) are flush, and each of the end faces is farther away from the commutator (411) than the contact end (430).

3. The electric machine of claim 1, wherein, The motor (40) further comprises a stator (42) surrounding the outside of the rotor (41), the stator (42) comprising a stator core (420) and a stator winding (421) mounted on the stator core (420), the carbon brush support (44) being connected with the stator core (420).

4. The electric machine of claim 3, wherein, The motor (40) further comprises a lower support (45), and the lower end of the rotating shaft (410) penetrates through the lower support (45), so that the lower support (45) is also connected with the stator core (420).

5. The electric machine of claim 4, wherein, The motor (40) further comprises a fan blade (48), and the fan blade (48) is connected with the rotating shaft (410) in a circumferential transmission manner. The motor (40) further comprises a stator (42) surrounding the outside of the rotor (41), the stator (42) comprising a stator core (420) and a stator winding (421) mounted on the stator core (420), the carbon brush support (44) being connected with the stator core (420).

6. The electric machine of any one of claims 1 to 5, characterized by The motor (40) further comprises a lower support (45), and the lower end of the rotating shaft (410) penetrates through the lower support (45), so that the lower support (45) is also connected with the stator core (420).

7. The electric machine of claim 6, wherein, The motor (40) further comprises a fan blade (48), and the fan blade (48) is connected with the rotating shaft (410) in a circumferential transmission manner.

8. The electric machine of any one of claims 1 to 5, wherein, The motor (40) further comprises a stator (42) surrounding the outside of the rotor (41), the stator (42) comprising a stator core (420) and a stator winding (421) mounted on the stator core (420), the carbon brush support (44) being connected with the stator core (420).

9. A food processor, characterized in that, The motor (40) further comprises a lower support (45), and the lower end of the rotating shaft (410) penetrates through the lower support (45), so that the lower support (45) is also connected with the stator core (420). The motor (40) further comprises a fan blade (48), and the fan blade (48) is connected with the rotating shaft (410) in a circumferential transmission manner. The motor (40) further comprises a stator (42) surrounding the outside of the rotor (41), the stator (42) comprising a stator core (420) and a stator winding (421) mounted on the stator core (420), the carbon brush support (44) being connected with the stator core (420). The motor (40) further comprises a lower support (45), and the lower end of the rotating shaft (410) penetrates through the lower support (45), so that the lower support (45) is also connected with the stator core (420). The motor (40) further comprises a fan blade (48), and the fan blade (48) is connected with the rotating shaft (410) in a circumferential transmission manner. The motor (40) further comprises a stator (42) surrounding the outside of the rotor (41), the stator (42) comprising a stator core (420) and a stator winding (421) mounted on the stator core (420), the carbon brush support (44) being connected with the stator core (420). The motor (40) further comprises a lower support (45), and the lower end of the rotating shaft (410) penetrates through the lower support (45), so that the lower support (45) is also connected with the stator core (420). The motor (40) further comprises a fan blade (48), and the fan blade (48) is connected with the rotating shaft (410) in a circumferential transmission manner. The electric machine (40) according to any one of claims 1 to 8, in transmission connection with the stirring blade (21).

10. The food processor of claim 9, wherein, The cup assembly (20) further comprises a cup body (22) and a cup base (23) arranged at the bottom of the cup body (22), and the electric machine (40) is accommodated in the cup base (23).

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