CN217610771U - Vacuum cleaner - Google Patents

Abstract

The utility model discloses a dust collector, dust collector includes: a housing; a power assembly; the power supply unit is provided with a butt joint device, the butt joint device is electrically connected with the power supply unit, and a guide part is arranged on the butt joint device; dirt cup, dirt cup includes: the cyclone cup, the dust cup and the electric connecting device are arranged on the cyclone cup and used for being connected with the dust collection head, the dust cup is arranged at the front end of the power supply unit, the rear end of the cyclone cup is sleeved at the front end of the power assembly, and after the cyclone cup rotates for a preset angle, the electric connecting device is in guide fit with the guide part, so that the electric connecting device is electrically connected with the butting device. Therefore, the guide part is arranged on the butt joint device, the electric connection device is arranged on the cyclone cup, the cyclone cup is arranged at the front end of the power assembly, and after the cyclone cup rotates for a preset angle, the electric connection device and the guide part can be matched in a guiding mode, so that the speed and accuracy of electric connection between the electric connection device and the butt joint device can be improved, and the user experience is improved.

Description

Vacuum cleaner

Technical Field

The utility model belongs to the technical field of the dust catcher technique and specifically relates to a dust catcher.

Background

With the development of science and technology and the improvement of the living standard of people, the dust collector is recognized by people by the function of rapidly cleaning foreign matters on the ground, and gradually enters the life of people. The dust collector belongs to an electric appliance, and all the electric appliances are electrically connected with each other through an electric connector and a butt connector, so that the normal use of the dust collector is ensured.

In prior art, when each power consumption part of dismouting dust catcher, it is great with the degree of difficulty that the butt joint piece electricity is connected to have electric connector to the lower problem of connection accuracy leads to user's use to experience lowly, and the reliability of dust catcher reduces.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a dust collector, the electric connection between the butt joint device and the electric connection device of this dust collector is more simple and reliable.

According to the utility model discloses dust catcher, include: the power supply device comprises a shell, a power cavity and a power supply cavity, wherein the shell is internally provided with the power cavity and the power supply cavity; the power assembly is arranged in the power cavity; the power supply unit is arranged in the power supply cavity and is provided with a butt joint device, the butt joint device is electrically connected with the power supply unit, and a guide part is arranged on the butt joint device; a dirt cup, the dirt cup comprising: the dust collecting cup is communicated with the cyclone cup, the electric connecting device is arranged on the cyclone cup and is used for connecting a dust collecting head, the dust collecting cup is arranged at the front end of the power supply unit, the rear end of the cyclone cup is sleeved at the front end of the power assembly, and after the cyclone cup rotates for a preset angle, the electric connecting device is in guiding fit with the guiding part so that the electric connecting device is electrically connected with the butting device.

Therefore, the guiding part is arranged on the docking device, the electric connection device is arranged on the cyclone cup, the cyclone cup is arranged at the front end of the power assembly, and after the cyclone cup rotates by a preset angle, the electric connection device and the guiding part can be matched in a guiding mode, so that the speed and accuracy of electric connection between the electric connection device and the docking device can be improved, and the use experience of a user is improved.

According to some embodiments of the utility model, the guide part is the spigot surface, the height of spigot surface is in increase gradually in the direction of rotation of whirlwind cup.

According to some embodiments of the utility model, the interfacing apparatus includes interfacing part and mounting panel, the interfacing part set up in the mounting panel, the interfacing part with the power supply unit electricity is connected, the interfacing part with the electric connection device electricity is connected, the mounting panel is in corresponding the position of at least one side of interfacing part has been seted up the spigot surface.

According to the utility model discloses a some embodiments, the spigot surface is the direction inclined plane, be formed with contained angle alpha between direction inclined plane and the horizontal plane, alpha satisfies the relational expression: alpha is more than or equal to 0 degree and less than or equal to 30 degrees.

According to some embodiments of the invention, α satisfies the relation: alpha is more than or equal to 15 degrees and less than or equal to 30 degrees.

According to some embodiments of the present invention, the guide surface is an arc-shaped guide surface.

According to some embodiments of the present invention, the electric connecting device includes a first electric connecting piece, a second electric connecting piece and a connecting wire, the first electric connecting piece is disposed at the rear end of the cyclone cup, the second electric connecting piece is disposed at the front end of the cyclone cup, the connecting wire is connected between the first electric connecting piece and the second electric connecting piece, the second electric connecting piece is electrically connected with the dust suction head, the first electric connecting piece is in butt fit with the movable elastic abutment of the guide surface, so that the first electric connecting piece is electrically connected with the abutting device.

According to the utility model discloses a some embodiments, the power supply chamber corresponds power supply unit's front end is provided with the baffle, be provided with the mount pad on the baffle, interfacing apparatus set up in the mount pad, be provided with the perforation on the mount pad, interfacing apparatus with power supply unit passes through the perforation electricity is connected.

According to some embodiments of the present invention, the rear end of the dust cup and the partition plate are abutted against each other, and an avoiding groove is formed in the dust cup, and the avoiding groove is provided with the abutting device and the electric connecting device.

According to the utility model discloses a some embodiments, power component's front end protrusion in the power chamber just is provided with the first portion of establishing of hanging, the rear end of whirlwind cup is provided with the second and hangs the portion of establishing, the rear end cover of whirlwind cup is established power component's front end after the whirlwind cup rotates predetermined angle, the second hang establish the portion with first hanging establish the portion and hang and establish the cooperation, electric connector with butt joint unit sets up relatively around.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a vacuum cleaner in accordance with an embodiment of the present invention;

figure 2 is a partial exploded view of a first perspective of a vacuum cleaner in accordance with an embodiment of the present invention;

FIG. 3 is a partial exploded view of a second perspective of a vacuum cleaner in accordance with an embodiment of the present invention;

fig. 4 is a schematic diagram of a power supply unit and a partition of an embodiment of the invention;

fig. 5 is an exploded view of a docking device according to an embodiment of the present invention;

FIG. 6 is a schematic view of a baffle plate according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a cyclone cup and an electrical connection device according to an embodiment of the present invention.

Reference numerals:

100. a vacuum cleaner;

10. a housing; 11. a power cavity; 12. a power supply chamber; 121. a partition plate; 122. a mounting seat; 123. perforating;

20. a power assembly; 21. a first hanging part;

30. a power supply unit; 31. a docking device; 311. a guide portion; 312. a docking member; 313. mounting a plate;

40. a dust cup; 41. a cyclone cup; 411. a second hanging part; 42. a dust collecting cup; 421. an avoidance groove; 43. an electrical connection device; 431. a first electrical connection; 432. a second electrical connection; 433. a connecting wire;

50. a dust suction head.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A vacuum cleaner 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 7.

Referring to fig. 1 to 3, a vacuum cleaner 100 according to an embodiment of the present invention may mainly include: casing 10, power component 20, power supply unit 30 and dirt cup 40, wherein, be provided with power chamber 11 and power supply chamber 12 in the casing 10, power component 20 sets up in power chamber 11, and power supply unit 30 sets up in power supply chamber 12, and dirt cup 40 includes: the dust collecting cup 42 is communicated with the cyclone cup 41, the dust collecting cup 42 is arranged at the front end of the power supply unit 30, the rear end of the cyclone cup 41 is sleeved at the front end of the power assembly 20, the docking device 31 is electrically connected with the power supply unit 30, and the electric connecting device 43 is arranged on the cyclone cup 41 and is used for connecting the dust collecting head 50.

Specifically, after the vacuum cleaner 100 is assembled, the docking device 31 and the electrical connection device 43 are electrically connected correspondingly, so that when a user uses the vacuum cleaner 100, the power supply unit 30 in the power supply cavity 12 can supply electrical energy to the power assembly 20 in the power cavity 11 on the one hand, and can supply electrical energy to the dust collection head 50 through the docking device 31 and the electrical connection device 43 on the other hand, wherein the dust collection head 50 can include a roller brush and a roller brush motor, the power supply unit can be electrically connected with the roller brush motor, so that the roller brush motor drives the roller brush to rotate, so that foreign matters can be sucked into the dust cup 40, and by communicating the dust cup 42 and the cyclone cup 41 with each other, wind with the foreign matters passes through a guiding effect in the cyclone cup 41, so that the foreign matters are discharged into the dust cup 42, a certain amount of storage of the foreign matters is realized, and the wind can flow to the power cavity 11 under the action of the power assembly 20, so that the vacuum cleaner 100 is discharged, so that a cleaning function of the vacuum cleaner 100 can be realized, and normal operation of the vacuum cleaner 100 is ensured.

Further, the docking unit 31 is provided with a guide portion 311, and after the cyclone cup 41 is rotated by a predetermined angle, the electrical connection unit 43 is guided to be engaged with the guide portion 311, so that the electrical connection unit 43 is electrically connected with the docking unit 31. Specifically, the cyclone cup 41 is detachable with respect to the vacuum cleaner 100, after the cyclone cup 41 is taken down from the vacuum cleaner 100 and cleaned, and is installed on the vacuum cleaner 100 again, the rear end of the cyclone cup 41 can be sleeved at the front end of the power assembly 20, then the cyclone cup 41 is rotated by a predetermined angle, the electrical connection device 43 can be in guiding fit with the guiding portion 311 correspondingly, the electrical connection device 43 can be moved along the guiding portion 311 correspondingly, so as to achieve electrical connection with the docking device 31, so that not only can the electrical connection device 43 on the cyclone cup 41 be in direct contact with the docking device 31 for electrical connection, the integration level of the vacuum cleaner 100 can be improved, but also the speed and accuracy of electrical connection between the electrical connection device 43 and the docking device 31 can be improved, the electrical connection between the electrical connection device 43 and the docking device 31 is more stable and smooth, the assembly and production efficiency of the vacuum cleaner 100 can be improved, and the use experience of a user can be improved.

Therefore, the guide part 311 is arranged on the docking device 31, the electric connecting device 43 is arranged on the cyclone cup 41, the cyclone cup 41 is arranged at the front end of the power assembly 20, and after the cyclone cup 41 rotates by a preset angle, the electric connecting device 43 and the guide part 311 can be matched in a guiding mode, so that the speed and the accuracy of electric connection between the electric connecting device 43 and the docking device 31 can be improved, and the use experience of a user is improved.

As shown in fig. 2 to 5, the guide portion 311 is a guide surface, and the height of the guide surface gradually increases in the rotation direction of the cyclone cup 41. Specifically, during the assembly of the vacuum cleaner 100, the cyclone cup 41 needs to rotate a certain angle to electrically connect the electrical connection device 43 and the docking device 31, and by setting the guide portion 311 as a guide surface and gradually increasing the height of the guide surface in the rotation direction of the cyclone cup 41, the electrical connection device 43 can be in guide fit with the guide surface and can contact and electrically connect the docking device 31 and the electrical connection device 43 along the height change of the guide surface in the rotation direction of the cyclone cup 41 during the rotation of the cyclone cup 41 by the cyclone cup 41, so that the electrical connection between the docking device 31 and the electrical connection device 43 can be simpler and more reliable.

Further, as shown in fig. 4 and 5, the docking device 31 may mainly include a docking member 312 and a mounting plate 313, the docking member 312 is disposed on the mounting plate 313, the docking member 312 is electrically connected to the power supply unit 30, the docking member 312 is electrically connected to the electrical connection device 43, and the mounting plate 313 is provided with a guide surface at a position corresponding to at least one side of the docking member 312. Specifically, by disposing the docking element 312 on the mounting plate 313 and disposing a guiding surface on the mounting plate 313 corresponding to at least one side of the docking element 312, on the premise of ensuring the electrical connection between the docking element 312 and the power supply unit 30, the electrical connection device 43 can move along the guiding surface on the mounting plate 313, so as to not only achieve the electrical connection between the docking element 312 and the electrical connection device 43 and achieve the electrical connection between the docking element 312 and the electrical connection device 43 more smoothly and accurately, but also prevent the electrical connection device 43 from directly exerting an acting force on the docking element 312 during the moving process, thereby preventing the structure of the docking element 312 from being damaged, and improving the reliability of the docking element 312.

In some embodiments of the present invention, as shown in fig. 2 to 5, the guiding surface is a guiding inclined surface, an included angle α is formed between the guiding inclined surface and the horizontal plane, and α satisfies the following relation: alpha is more than or equal to 0 degree and less than or equal to 30 degrees. Specifically, can set up the spigot surface into the direction inclined plane to the contained angle setting between inclined plane and the horizontal plane of will leading can guarantee on the one hand like this that the direction inclined plane is too big to electric connector 43's guide effect, and on the other hand can prevent that the contained angle that forms between direction inclined plane and the horizontal plane is too big, and interfacing apparatus 31 is too big along the resistance that the direction inclined plane removed, thereby can make the direction cooperation between electric connector 43 and the direction inclined plane more stable smooth and easy.

Further, α satisfies the relation: alpha is more than or equal to 15 degrees and less than or equal to 30 degrees. Specifically, the included angle between the guiding inclined plane and the horizontal plane can be set in a more optimal range, so that the structural design of the guiding inclined plane can be further optimized, the included angle between the guiding inclined plane and the horizontal plane is prevented from being too small, and the guiding effect of the guiding inclined plane on the butting device 31 is too small, so that the guiding matching between the electric connecting device 43 and the guiding inclined plane can be more effective and reliable.

In other embodiments of the present invention, the guide surface is an arc-shaped guide surface. Specifically, the guiding surface may also be configured as an arc-shaped guiding surface, so that when the cyclone cup 41 is assembled to the vacuum cleaner 100 and the cyclone cup 41 rotates by a predetermined angle, the electrical connection device 43 on the cyclone cup 41 can be guided to cooperate with the arc-shaped guiding surface and move along the arc-shaped guiding surface, so that the electrical connection device 43 is correspondingly located at a correct position for electrical connection with the docking unit 31, the path along which the electrical connection device 43 moves along the guiding surface is smoother, and the smoothness of electrical connection between the electrical connection device 43 and the docking unit 31 can be improved.

As shown in fig. 2, 3 and 7, the electrical connection device 43 may mainly include a first electrical connector 431, a second electrical connector 432 and a connection line 433, the first electrical connector 431 is disposed at the rear end of the cyclone cup 41, the second electrical connector 432 is disposed at the front end of the cyclone cup 41, the connection line 433 is connected between the first electrical connector 431 and the second electrical connector 432, the second electrical connector 432 is electrically connected with the dust suction head 50, and the first electrical connector 431 is movably and elastically fitted with the guide surface to electrically connect the first electrical connector 431 and the docking device 31. Specifically, the first electrical connector 431 and the second electrical connector 432 are respectively arranged at the rear end and the front end of the cyclone cup 41, and the connecting wire 433 is connected between the first electrical connector 431 and the second electrical connector 432, so that when the cyclone cup 41 is arranged at the front end of the power assembly 20, the first electrical connector 431 can be movably and elastically abutted and matched with the guide surface, the first electrical connector 431 can be moved along the guide surface by rotating the cyclone cup 41 to realize the electrical connection with the docking device 31, and further, the second electrical connector 432 is electrically connected with the dust collection head 50 by arranging the dust collection head 50 at the front end of the cyclone cup 41, so that the power supply unit 30 can provide electric energy for the dust collection head 50, not only can the stability and the reliability of the electrical connection between the power supply unit 30 and the dust collection head 50 be ensured, but also the structure of the electrical connection device 43 can be simple, and the convenience of the electrical connection device 43 integrated arrangement on the cyclone cup 41 can be improved.

Referring to fig. 3 to 6, a partition 121 is disposed at the front end of the power supply cavity 12 corresponding to the power supply unit 30, a mounting seat 122 is disposed on the partition 121, the docking device 31 is disposed on the mounting seat 122, a through hole 123 is disposed on the mounting seat 122, and the docking device 31 and the power supply unit 30 are electrically connected through the through hole 123. Specifically, front end at power supply chamber 12 corresponding power supply unit 30 sets up baffle 121, baffle 121 can realize separating power supply unit 30 in the power supply chamber 12 with the external world, realize establishing the guard action to power supply unit 30's cover, promote power supply unit 30's structural stability, through set up mount pad 122 on baffle 121, and set up perforation 123 on mount pad 122, like this can make full use of baffle 121's structure, not only can conveniently set up interfacing apparatus 31 on mount pad 122, promote the stability and the reliability that interfacing apparatus 31 set up in power chamber 11, and can make things convenient for interfacing apparatus 31 and power supply unit 30 to realize the electricity through perforation 123 and connect, guarantee interfacing apparatus 31 and power supply unit 30's electricity and connect, thereby can optimize the structural layout of dust catcher 100, can promote the reliability of dust catcher 100.

Further, as shown in fig. 2, the rear end of the dust cup 42 and the partition plate 121 are abutted against each other, and an escape groove 421 is formed in the dust cup 42, and the escape groove 421 escapes from the abutting device 31 and the electrical connecting device 43. Specifically, since the docking device 31 is disposed on the partition 121 in the power supply cavity 12, the electrical connection device 43 is disposed at the rear end of the cyclone cup 41, the dust cup 42 is disposed at the front end of the power supply cavity 12 and abuts against the partition 121, and the cyclone cup 41 is disposed at the front end of the power cavity 11, in order to achieve contact electrical connection between the docking device 31 and the electrical connection device 43, the electrical connection device 43 at least partially protrudes from the periphery of the cyclone cup 41 to adapt to the disposition position of the docking device 31, and the avoiding groove 421 is disposed at the rear end of the dust cup 42, so that when the cyclone cup 41 is disposed above the dust cup 42, the avoiding groove 421 can correspondingly avoid the docking device 31 and the electrical connection device 43, thereby ensuring electrical connection between the docking device 31 and the electrical connection device 43, optimizing the structural design of the dust collector 100, and improving the structural compactness and reliability of the dust collector 100.

Referring to fig. 2 and 3, the front end of the power assembly 20 protrudes out of the power cavity 11 and is provided with a first hanging portion 21, the rear end of the cyclone cup 41 is provided with a second hanging portion 411, the rear end of the cyclone cup 41 is sleeved at the front end of the power assembly 20, after the cyclone cup 41 rotates by a predetermined angle, the second hanging portion 411 is hung and matched with the first hanging portion 21, and the electrical connection device 43 and the docking device 31 are oppositely arranged in the front and rear directions. Specifically, through setting up the front end protrusion power cavity 11 of power component 20 to set up first portion 21 of establishing of hanging in the part that power component 20 protrudes power cavity 11, the rear end of whirlwind cup 41 opens the setting, set up whirlwind cup 41 in the in-process of power component 20 front end, need establish the front end at power component 20 with the open rear end cover of whirlwind cup 41 earlier, and through rotating predetermined angle, make first portion 21 of establishing of hanging and establish portion 411 and hang and establish the cooperation, thereby realize that whirlwind cup 41 is fixed with being connected of power component 20.

Further, when the first hanging part 21 and the second hanging part 411 are hung and matched, the electric connecting device 43 can move along the guide surface due to the rotation of the cyclone cup 41, and the electric connecting device 43 and the docking device 31 correspondingly realize the electric connection setting, so that the assembling steps of the dust collector 100 can be simplified, and certain fool-proofing performance is realized, a user can disassemble and clean the cyclone cup and reinstall the cyclone cup at the rear end of the power assembly 20, so that the electric connection between the docking device 31 and the electric connecting device 43 can be quickly and directly realized, and the structural design of the dust collector 100 can be further optimized.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A vacuum cleaner (100), comprising:

the device comprises a machine shell (10), wherein a power cavity (11) and a power supply cavity (12) are arranged in the machine shell (10);

a power assembly (20), said power assembly (20) being disposed within said power cavity (11);

the power supply unit (30), the power supply unit (30) is arranged in the power supply cavity (12), the power supply unit (30) is provided with a docking device (31), the docking device (31) is electrically connected with the power supply unit (30), and a guide part (311) is arranged on the docking device (31);

a dirt cup (40), the dirt cup (40) comprising: the dust collecting cup (42) is communicated with the cyclone cup (41), the electric connecting device (43) is arranged on the cyclone cup (41) and used for being connected with a dust collecting head (50), the dust collecting cup (42) is arranged at the front end of the power supply unit (30), the rear end of the cyclone cup (41) is sleeved at the front end of the power assembly (20), and after the cyclone cup (41) rotates for a preset angle, the electric connecting device (43) is in guiding fit with the guiding part (311) so that the electric connecting device (43) is electrically connected with the butt-joint device (31).

2. The vacuum cleaner (100) according to claim 1, wherein the guide portion (311) is a guide surface having a height gradually increasing in a rotation direction of the whirling cup (41).

3. The vacuum cleaner (100) of claim 2, wherein the docking device (31) comprises a docking member (312) and a mounting plate (313), the docking member (312) is disposed on the mounting plate (313), the docking member (312) is electrically connected to the power supply unit (30), the docking member (312) is electrically connected to the electrical connection device (43), and the mounting plate (313) is provided with the guide surface at a position corresponding to at least one side of the docking member (312).

4. The vacuum cleaner (100) of claim 2, wherein the guiding surface is a guiding inclined surface, and an included angle α is formed between the guiding inclined surface and a horizontal plane, and α satisfies the relation: alpha is more than or equal to 0 degree and less than or equal to 30 degrees.

5. The vacuum cleaner (100) of claim 4, wherein α satisfies the relationship: alpha is more than or equal to 15 degrees and less than or equal to 30 degrees.

6. The vacuum cleaner (100) of claim 2, wherein the guide surface is an arcuate guide surface.

7. A vacuum cleaner (100) according to claim 2, wherein the electrical connection means (43) comprises a first electrical connector (431), a second electrical connector (432) and a connection wire (433), the first electrical connector (431) being arranged at the rear end of the cyclone cup (41), the second electrical connector (432) being arranged at the front end of the cyclone cup (41), the connection wire (433) being connected between the first electrical connector (431) and the second electrical connector (432), the second electrical connector (432) being electrically connected with the cleaning head (50), the first electrical connector (431) being movably resiliently snap-fitted with the guide surface for electrically connecting the first electrical connector (431) and the docking means (31).

8. The vacuum cleaner (100) of claim 2, wherein a partition (121) is disposed at the front end of the power supply cavity (12) corresponding to the power supply unit (30), a mounting seat (122) is disposed on the partition (121), the docking device (31) is disposed on the mounting seat (122), a through hole (123) is disposed on the mounting seat (122), and the docking device (31) and the power supply unit (30) are electrically connected through the through hole (123).

9. The vacuum cleaner (100) according to claim 8, wherein the rear end of the dust cup (42) and the partition plate (121) are abutted against each other, and an avoiding groove (421) is formed in the dust cup (42), and the avoiding groove (421) is provided for avoiding the abutting device (31) and the electrical connecting device (43).

10. The vacuum cleaner (100) of claim 1, wherein the front end of the power assembly (20) protrudes out of the power cavity (11) and is provided with a first hanging portion (21), the rear end of the cyclone cup (41) is provided with a second hanging portion (411), the rear end of the cyclone cup (41) is sleeved at the front end of the power assembly (20), after the cyclone cup (41) rotates by a predetermined angle, the second hanging portion (411) is in hanging fit with the first hanging portion (21), and the electrical connection device (43) and the docking device (31) are oppositely arranged in the front and back direction.

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