CN220631926U - Bowl cover assembly and cooking machine - Google Patents

Abstract

The application discloses bowl cover assembly and cooking machine, cooking machine includes bowl cover assembly and host computer, bowl cover assembly includes bowl cover and chargeable cell; the bowl cover is internally provided with a containing cavity, the rechargeable battery is arranged in the containing cavity, and the bowl cover is provided with a charging interface and a lower coupler which are connected with the rechargeable battery. According to the bowl cover, the rechargeable battery is arranged in the accommodating cavity of the bowl cover, so that the space of the host is not occupied, the space inside the bowl cover is reasonably utilized, and the host is miniaturized; and simultaneously, the bowl cover assembly has a chargeable function.

Description

Bowl cover assembly and cooking machine

Technical Field

The application relates to the technical field of small household appliances, in particular to a bowl cover assembly and a cooking machine.

Background

The food processor such as meat grinder comprises a stirring bowl, a bowl cover, a stirring knife component and a main machine. The host computer includes motor and safety switch. The bowl cover is arranged above the stirring bowl, and the middle part of the bowl cover is provided with an installation cavity for the main machine to pass through and a connecting hole for the main machine to be connected with the stirring cutter component.

When in use, the bowl cover is closed with the bowl cover of the stirring bowl. The main machine is placed in the installation cavity of the bowl cover, the motor is connected with the stirring cutter assembly, and the safety switch is triggered by the triggering part, so that the stirring cutter assembly rotates in the stirring bowl to cut up food materials under the driving of the motor.

However, the bowl cover comprises an inner space except the mounting cavity, and other structures are not arranged in the inner space, so that the inner space of the bowl cover is wasted, the quality of the host is large, and the operation is inconvenient when a user uses the food processor.

Disclosure of Invention

The utility model aims at disclosing a bowl lid subassembly and cooking machine for bowl lid subassembly has chargeable function, can effectively utilize the inner space of bowl lid, realizes the miniaturization of host computer simultaneously.

The application discloses a bowl cover assembly, which comprises a bowl cover and a rechargeable battery; the bowl cover is internally provided with a containing cavity, the rechargeable battery is arranged in the containing cavity, and the bowl cover is provided with a charging interface and a lower coupler which are connected with the rechargeable battery.

As the setting, form and hold the chamber in the bowl cover, install rechargeable battery in holding the intracavity, need not to occupy the host computer space, can the rational utilization bowl cover inner space, realized the host computer miniaturization again. Meanwhile, the bowl cover assembly also has a rechargeable function.

In some embodiments, the bowl cover assembly further comprises a control board, the rechargeable battery is electrically connected with the charging interface through the control board.

By the arrangement, the connection structure of the rechargeable battery, the lower coupler and the charging interface can be simplified, and integration of electronic elements in the bowl cover assembly is improved.

In some embodiments, the control board is provided with a plurality of keys, the top of the bowl cover is provided with a hollowed-out area corresponding to the plurality of keys, and the hollowed-out area is internally provided with a key cap corresponding to the plurality of keys and a plurality of elastic ribs connecting the key cap with the edges of the hollowed-out area.

As the key is arranged on the control panel, the user can conveniently operate the key on the bowl cover to select the function of the food processing machine, and the number of elements on the host is further reduced. The top of the bowl cover is provided with the key cap corresponding to the key and the elastic rib connecting the key cap with the edge of the hollowed-out area, so that the bowl cover has a simple integral structure and can improve the durability of the key.

In some embodiments, the bowl cover assembly further comprises a face sticker disposed over the hollowed-out area, the face sticker including a pressing portion disposed over the key cap.

The bowl cover is characterized in that the bowl cover is provided with a pressing part, the pressing part is provided with a plurality of concave parts, and the concave parts are respectively provided with a plurality of concave parts.

In some embodiments, the central recess of the bowl cover forms a main machine cavity, and the main machine cavity is positioned at the periphery of the accommodating cavity; the top wall of the bowl cover is provided with a jack, the charging interface corresponds to the jack so as to be exposed at the top of the bowl cover, and the lower coupler is arranged at the bottom of the host cavity.

As mentioned above, the main machine cavity is arranged in the middle of the bowl cover, and is positioned at the periphery of the accommodating cavity, so that all the spaces of the bowl cover are reasonably utilized. The host and the lower coupler are correspondingly placed in the host cavity, so that the host and the lower coupler are free from looseness under the action of gravity, and problems in the working process of the cooking machine are avoided. The bowl cover is provided with the jack corresponding to the charging interface, so that a user can charge the rechargeable battery conveniently.

In some embodiments, a plurality of positioning plates are disposed in the accommodating cavity, and the plurality of positioning plates form two battery accommodating parts for accommodating the rechargeable battery.

The rechargeable battery is limited by the battery accommodating part, so that the rechargeable battery is relatively stable in the accommodating cavity when the bowl cover moves or during the working process of the cooking machine, and large displacement can not be generated in the horizontal direction and the vertical direction.

In some embodiments, two rechargeable batteries are disposed in the accommodating cavity, and the two rechargeable batteries are respectively accommodated in the two battery accommodating cavities.

As the arrangement is adopted, a pair of rechargeable batteries are respectively arranged in the two battery accommodating parts, more electric quantity is provided for the motor, the working time of the food processor is ensured, and the frequent charging of a user is avoided.

In some embodiments, the bowl cover comprises an upper bowl cover and a lower bowl cover which are mutually buckled; the accommodating cavity is surrounded by the upper bowl cover and the lower bowl cover; the upper bowl cover comprises a first bottom wall, an annular inner wall extending upwards from the first bottom wall and a top wall connected with the annular inner wall; the main machine cavity is defined by the first bottom wall and the annular inner wall.

The upper bowl cover and the lower bowl cover are buckled to form a closed accommodating cavity, and an installation space is provided for the rechargeable battery and the control panel. The first bottom wall and the annular inner wall form a main machine cavity on the upper bowl cover, an installation position is provided for the main machine, and the main machine part is positioned in the main machine cavity, so that the stirring cutter assembly can be driven to work, and the stability of the main machine in the working process can be enhanced.

In some embodiments, the lower bowl cover comprises a second bottom wall and an annular mounting table arranged on the periphery side of the second bottom wall, and the mounting table is higher than the second bottom wall; the charging interface and the control board are arranged on the mounting table; the charging interface and the control board are respectively arranged at two sides of the host cavity.

If above-mentioned setting, lower bowl lid is including locating inside mount table, and the control panel is fixed on the mount table and is located the both sides of host computer chamber with the interface that charges for the control panel is nearer apart from last bowl lid with the interface that charges, makes and holds chamber inner structure compacter.

In some embodiments, the upper bowl cover further comprises an outer sidewall extending downwardly from the top wall, the outer sidewall being assembled or connected with the lower bowl cover, the lower bowl cover being at least partially received within the bowl body when the bowl cover assembly is mounted to the bowl body.

If above-mentioned setting, guarantee bowl lid subassembly and the airtight of bowl body, avoid cooking machine working process, bowl lid and bowl body separation guarantee the safety in utilization.

A second aspect of the present application provides a food processor. The food processor comprises a host and any bowl cover assembly, wherein the host comprises a motor and an upper coupler, the upper coupler is arranged at the bottom of the host, and when the host is mounted on the bowl cover, the upper coupler is matched with the lower coupler.

If above-mentioned setting, the motor volume is littleer, goes up the coupler and cooperates with the lower coupler in the bowl cover subassembly, and the mounting means is simple, and the cooking machine is whole lighter and more handy.

Drawings

Fig. 1 is a perspective view of a food processor of the present utility model;

fig. 2 is an exploded view of the food processor shown in fig. 1;

fig. 3 is a cross-sectional view of the food processor shown in fig. 1;

FIG. 4 is an exploded view of the bowl cover assembly of FIG. 2;

fig. 5 is an exploded view of the host of fig. 2.

Reference numerals illustrate: 10. a bowl body; 11. a sidewall; 12. positioning a shaft; 20. a bowl cover assembly; 30. a stirring blade assembly; 31. a cutter shaft; 32. a stirring knife; 40. a host; 41. a motor; 411. an output shaft; 42. an upper coupler; 43. a speed change gear set; 44. a housing; 45. a lower case; 50. a bowl cover; 51. a host cavity; 52. a receiving chamber; 53. a bowl cover is arranged; 531. a first bottom wall; 532. an annular inner wall; 533. a top wall; 534. an outer sidewall; 535. a hollowed-out area; 536. a key cap; 537. an elastic rib; 538. a jack; 54. a lower bowl cover; 541. a second bottom wall; 5411. a connection hole; 542. a mounting table; 543. a positioning plate; 544. a battery accommodating section; 545. a control panel positioning column; 546. a charging interface positioning column; 547. a mounting column; 60. a rechargeable battery; 70. a control board; 71. a charging interface; 72. a lower coupler; 73. a key; 80. a face paste; 81. a pressing part.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with some aspects of the present application as detailed in the accompanying claims.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, the present application provides a food processor, which includes a bowl body 10, a bowl cover assembly 20, a stirring blade assembly 30, and a main machine 40. The bowl cover assembly 20 is covered on the bowl body 10, and the bowl cover assembly 20 is attached to the side wall 11 of the bowl body 10. The bottom of the bowl body 10 is provided with a positioning shaft 12 extending upwards, and a stirring cutter assembly 30 is installed in the bowl body 10 in a matched manner with the positioning shaft 12.

The stirring blade assembly 30 includes a cutter shaft 31 and a stirring blade 32 provided on the cutter shaft 31. The bottom of the cutter shaft 31 is fixed on the positioning shaft 12, so that the stirring cutter 32 rotates on the concentric shaft, the rotation stability of the stirring cutter 32 is ensured, and the rotation noise of the stirring cutter 32 and the vibration of the food processor are reduced.

In the embodiment of the present application, the main machine 40 is mounted on the bowl cover assembly 20 and is connected to the stirring blade assembly 30. Referring to fig. 3, the main unit 40 includes a motor 41 and an upper coupler 42, and the upper coupler 42 is disposed at the bottom of the main unit 40. The motor 41 is smaller in size, the upper coupler 42 is matched with the bowl cover assembly 20, the installation mode is simple, and the overall size of the food processor is lighter.

The main machine 40 further comprises a speed change gear box 43, an output shaft 411 of the main machine 40 is detachably connected with the stirring blade assembly 30 through the speed change gear box 43 in a rotating mode, so that the main machine 40 and the stirring blade assembly 30 are detachably designed, the stirring blade assembly 30 is detached and cleaned independently after the food processor is used, the sanitation and hygiene of the stirring blade assembly 30 are maintained, and bacteria are prevented from breeding.

The motor 41 drives the stirring blade assembly 30 to rotate, and the stirring blade 32 stirs the food material, for example, the meat into a meat paste; in the case where the food material is a vegetable, the vegetable may be whipped into a vegetable puree or very fine vegetable particles.

The main machine 40 further includes a housing 44 provided outside the motor 41 and a lower housing 45 provided at the bottom of the speed change gear box 43, the housing 44 and the lower housing 45 protecting the motor 41.

Referring to fig. 4 to 5, the bowl cover assembly 20 includes a bowl cover 50 and a rechargeable battery 60. The bowl cover 50 defines a receiving cavity 52 therein, and a rechargeable battery 60 is disposed within the receiving cavity 52. The bowl cover is provided with a charging interface connected with the rechargeable battery and a lower coupler. The inside chamber 52 that holds that forms of bowl lid 50, install rechargeable battery 60 in holding the intracavity 52, need not to occupy host computer 40 space, can the rational utilization bowl lid 50 inner space also avoids rechargeable battery 60 to install on the host computer 40 and makes host computer 40 weight and volume increase, realizes that the host computer is miniaturized, makes things convenient for the user to take down host computer 40 from bowl lid 50 or assemble host computer 40 on bowl lid subassembly 20. Meanwhile, the bowl cover assembly 20 also has a rechargeable function.

Referring to fig. 5, the bowl cover 50 includes an upper bowl cover 53 and a lower bowl cover 54 fastened to each other, the main machine cavity 51 is located in the middle of the upper bowl cover 53, the accommodating cavity 52 is surrounded by the upper bowl cover 53 and the lower bowl cover 54, and the accommodating cavity 52 is located at the peripheral side of the main machine cavity 51. Specifically, the upper bowl cover 53 includes a first bottom wall 531, an annular inner wall 532 extending upward from the first bottom wall 531, and a top wall 533 connected to the annular inner wall 532. Specifically, the main body cavity 51 is disposed in the middle of the upper bowl cover 53, and is surrounded by a first bottom wall 531 and an annular inner wall 532.

The main machine cavity 51 provides an installation position for the main machine 40, so that the main machine 40 can drive the stirring blade assembly 30 to work, and the stability of the main machine 40 in the working process of the cooking machine can be enhanced. The receiving cavity 52 provides an installation space for the rechargeable battery 60 and other structures, and reasonably utilizes the internal space of the bowl cover 50, so that the bowl cover 50 has a rechargeable function.

The upper bowl cover 53 further includes an outer sidewall 534 extending downwardly from the top wall 533, the outer sidewall 534 being assembled or otherwise connected with the lower bowl cover 54, the lower bowl cover 54 being at least partially received within the bowl body 10 when the bowl cover assembly 20 is mounted to the bowl body 10. The lower bowl cover 54 is provided with a sealing structure in the circumferential direction. This structure guarantees that bowl lid 50 is airtight with bowl body 10, avoids cooking machine working in-process, bowl lid 50 and bowl body 10 separation, guarantees the safety in utilization.

The lower bowl cover 54 includes a second bottom wall 541 and an annular mounting plate 542 provided on the peripheral side of the second bottom wall 541, the mounting plate 542 being higher than the second bottom wall 541. The control board 70 and the charging interface 71 are fixed to the mounting stand 542, and the charging interface 71 and the control board 70 are provided on both sides of the main body chamber 51, respectively. Since the mounting stand 542 is higher than the second bottom wall 541, the control board 70 and the charging port 71 are fixed to the mounting stand 542 to be closer to the upper bowl cover 53, so that the internal structure of the accommodating chamber 52 is more compact.

The bottom of the second bottom wall 541 is provided with a connection hole 5411, and the cutter shaft 31 passes through the connection hole 5411 and is connected with the output shaft of the motor 41.

The accommodating chamber 52 is provided with a plurality of positioning plates 543, and the plurality of positioning plates 543 form a battery accommodating portion 544 accommodating the rechargeable battery 60. In this embodiment, a pair of battery housing portions 544 are provided in the housing chamber 52. The battery receiving part 544 restricts the movement of the rechargeable battery 60 within the bowl cover 50 so that the rechargeable battery 60 is stable within the battery receiving part 544 without a large displacement in the horizontal and vertical directions when the bowl cover 50 is moved or during the operation of the food processor.

Two rechargeable batteries 60 are provided in the housing chamber 52, and the two rechargeable batteries 60 are housed in the two battery housing portions 544. A pair of rechargeable batteries 60 are installed in the battery receiving part 544 to provide more power for the motor 41, so that the working time of the food processor is ensured, and frequent charging of a user is avoided.

In other embodiments, a plurality of rechargeable batteries 60 can be installed inside the food processor, and the total power of the rechargeable batteries 60 needs to satisfy the single maximum working time of the food processor.

The mounting stand 542 is further provided with a control board positioning column 545, a charging interface positioning column 546, and a mounting column 547. The charging interface 71 and the charging interface positioning column 546 are fixed on the mounting table 542, and the control board 70 and the control board positioning column 545 are fixed on the mounting table 542. The upper bowl cover 53 is secured to the lower bowl cover 54 by mounting posts 547.

Referring to fig. 2 and 5, the bowl cover assembly 20 further includes a control board 70, a charging interface 71, and a lower coupler 72. The rechargeable battery 60 is electrically connected to the charging interface 71 through the control board 70, and the rechargeable battery 60 is electrically connected to the charging interface 71 and the lower coupler 72. This structure can simplify the connection structure of the rechargeable battery 60 with the lower coupler 72 and the charging interface 71, and enhance the integration of the electronic components in the bowl cover assembly 20.

The middle part of the bowl cover 50 is recessed to form a main body cavity 51, the accommodating cavity 52 is located at the peripheral side of the main body cavity 51, the top wall 533 of the bowl cover 50 is provided with a jack, the charging interface 71 corresponds to the jack to be exposed at the top of the bowl cover 50, and the lower coupler 72 is disposed at the bottom of the main body cavity 51. In this embodiment, the charging interface 71 is exposed on the top wall 533, and the lower coupler 72 is disposed on the first bottom wall 531. The main machine cavity 51 is arranged in the middle of the bowl cover 50, the main machine cavity 51 is arranged on the periphery of the accommodating cavity 52, and all the space of the bowl cover 50 is reasonably utilized. The host 40 and the lower coupler 72 are correspondingly placed in the host cavity 51, the host 40 is electrically connected with the lower coupler 72, and no looseness exists between the host 40 and the lower coupler 72 under the action of gravity, so that problems in the working process of the cooking machine are avoided. The bowl cover 50 is provided with a jack 538 corresponding to the charging interface 71, so that a user can charge the rechargeable battery 60 conveniently.

The charging interface 71 is connected to the power supply via a power line to charge the rechargeable battery 60, so that the user can charge the rechargeable battery 60 conveniently. When the cooking machine is idle, insert the bowl lid 50 top with the power cord and charge the cooking machine for in the cooking machine use, need not power cord and power switch-on, make things convenient for the cooking machine to remove work.

When the main body 40 is mounted to the main body cavity 51 of the bowl cover 50, the lower coupler 72 is electrically connected to the upper coupler 42, and the rechargeable battery 60 supplies power to the motor 41. The host 40 can be firmly installed in the host cavity 51 under the action of self gravity, and has no looseness in the use process, and the installation mode is simple. The bottom of the main machine 40 is positioned in the main machine cavity 51, so that vibration of the main machine 40 relative to the bowl body 10 and the bowl cover assembly 20 can be reduced when the food processor works, and the stability of the food processor can be enhanced.

Referring to fig. 5, a plurality of keys 73 are provided on the control board 70, a hollowed-out area 535 corresponding to the plurality of keys 73 is provided on the top of the bowl cover 50, and a plurality of key caps 536 corresponding to the plurality of keys 73 and a plurality of elastic ribs 537 connecting the key caps 536 and edges of the hollowed-out area 535 are provided in the hollowed-out area 535.

The control panel 70 is provided with the keys 73, so that a user can conveniently operate the keys 73 on the bowl cover 50 to select the functions of the food processing machine, and the number of elements on the host machine is further reduced. The top of the bowl cover 50 is provided with a key cap 536 corresponding to the key 73 and an elastic rib 537 connecting the key cap 536 with the edge of the hollowed-out area 535, so that the overall structure is simple and the durability of the key 73 can be improved.

Bowl cover assembly 20 further includes a face sticker 80 disposed over hollowed out area 535, face sticker 80 including a pressing portion 81 disposed over key cap 536. The surface patch 80 is covered on the hollowed-out area 535, so that the top surface of the bowl cover 50 is flat, and a user operates on the pressing part 82 to select a corresponding function, thereby ensuring the convenience of operation and improving the aesthetic degree of the food processor.

The application provides a cooking machine installs rechargeable battery 60 in holding chamber 52 in bowl lid 50, when host computer 40 installs on bowl lid 50, goes up coupler 42 and lower coupler 72 electric connection, and rechargeable battery 60 is motor 41 power supply. This structure provides the rechargeable battery 60 in the bowl cover 50, and reasonably utilizes the inner space of the bowl cover 50. Not only can the bowl cover 50 have a chargeable function, but also the main machine 40 is only provided with the motor 41 and the upper coupler 42, so that the volume and the weight of the main machine 40 are reduced, the main machine 40 is lighter, and the use by a user is facilitated.

The foregoing description of the preferred embodiments of the present application is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the utility model.

Claims (11)

1. A bowl cover assembly comprising a bowl cover (50) and a rechargeable battery (60); the bowl cover (50) is internally provided with a containing cavity (52), the rechargeable battery (60) is arranged in the containing cavity (52), and the bowl cover (50) is provided with a charging interface (71) and a lower coupler (72) which are connected with the rechargeable battery (60).

2. The bowl cover assembly according to claim 1, wherein the bowl cover assembly (20) further comprises a control board (70), the rechargeable battery (60) being electrically connected to the charging interface (71) through the control board (70).

3. The bowl cover assembly according to claim 2, wherein a plurality of keys (73) are arranged on the control board (70), a hollowed-out area (535) corresponding to the plurality of keys (73) is arranged at the top of the bowl cover (50), and key caps (536) corresponding to the plurality of keys (73) and a plurality of elastic ribs (537) connecting the key caps (536) with the edges of the hollowed-out area (535) are arranged in the hollowed-out area (535).

4. A bowl cover assembly according to claim 3, wherein the bowl cover assembly (20) further comprises a face sticker (80) arranged above the hollowed-out area (535), the face sticker (80) comprising a pressing portion (81) arranged above the key cap (536).

5. Bowl cover assembly according to claim 2, wherein the central recess of the bowl cover (50) forms a main machine cavity (51), the main machine cavity (51) being located at the peripheral side of the receiving cavity (52); the top wall (533) of the bowl cover (50) is provided with a jack (538), the charging interface (71) corresponds to the jack (538) so as to be exposed at the top of the bowl cover (50), and the lower coupler (72) is arranged at the bottom of the host cavity (51).

6. The bowl cover assembly according to claim 1, wherein a plurality of positioning plates (543) are provided in the accommodating chamber (52), and the plurality of positioning plates (543) form two battery accommodating portions (544) accommodating the rechargeable battery (60).

7. The bowl cover assembly according to claim 6, wherein two rechargeable batteries (60) are provided in the accommodating chamber (52), and the two rechargeable batteries (60) are accommodated by the two battery accommodating parts (544) respectively.

8. The bowl cover assembly according to claim 5, wherein the bowl cover (50) comprises an upper bowl cover (53) and a lower bowl cover (54) that snap together; the accommodating cavity (52) is surrounded by the upper bowl cover (53) and the lower bowl cover (54); the upper bowl cover (53) comprises a first bottom wall (531), an annular inner wall (532) extending upwards from the first bottom wall (531) and a top wall (533) connected with the annular inner wall (532); the main body cavity (51) is surrounded by the first bottom wall (531) and the annular inner wall (532).

9. The bowl cover assembly according to claim 8, wherein the lower bowl cover (54) comprises a second bottom wall (541) and an annular mounting stand (542) provided on a peripheral side of the second bottom wall (541), the mounting stand (542) being higher than the second bottom wall (541); the charging interface (71) and the control board (70) are arranged on the mounting table (542); the charging interface (71) and the control board (70) are respectively arranged at two sides of the host cavity (51).

10. The bowl cover assembly according to claim 8, wherein the upper bowl cover (53) further comprises an outer sidewall (534) extending downwardly from the top wall (533), the outer sidewall (534) being assembled or connected with the lower bowl cover (54), the lower bowl cover (54) being at least partially received within the bowl body (10) when the bowl cover assembly (20) is mounted to the bowl body (10).

11. A food processor comprising a main machine (40) and a bowl cover assembly (20) according to any one of claims 1 to 10, wherein the main machine (40) comprises a motor (41) and an upper coupler (42), the upper coupler (42) is arranged at the bottom of the main machine (40), and the upper coupler (42) is matched with the lower coupler (72) when the main machine (40) is mounted in the main machine cavity (51).