CN113693395A

CN113693395A - Intelligence sofa bottom ground self-cleaning device

Info

Publication number: CN113693395A
Application number: CN202110805900.3A
Authority: CN
Inventors: 徐宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-11-26

Abstract

The invention relates to the technical field of intelligent sofa control, and discloses an automatic cleaning device for the floor at the bottom of an intelligent sofa, which comprises a shell, wherein a soft cushion is arranged outside the shell, a spring I for increasing the elasticity of the sofa is fixedly connected inside the shell, a cleaning device for cleaning the floor is movably connected inside the shell, a trigger device for controlling the starting and stopping states of the cleaning device is movably connected inside the shell, a slide block is driven to move back and forth by the rotation of a screw rod, a cleaning brush fixedly connected with the slide block can be driven to move back and forth to clean the floor, and a scraping blade rotates back and forth along with a gear, so that solid sticky objects which are difficult to be directly cleaned on the floor can be scraped, and the cleaning of the bottom of the sofa can be maintained.

Description

Intelligence sofa bottom ground self-cleaning device

Technical Field

The invention relates to the technical field of intelligent sofa control, in particular to an automatic cleaning device for the bottom ground of an intelligent sofa.

Background

The sofa is a multi-seat chair with a soft cushion (2), the interior of the chair is provided with springs or thick foam plastics and the like, the two sides of the chair are provided with armrests, the sofa is one of soft furniture, and through the development of centuries, the current types of the sofa are various, such as a functional sofa, a fixed back sofa, an infinite automatic control sofa, a pneumatic sofa, an electric sofa and the like.

Sofas are now essential furniture for many households, but they are inconvenient to clean and keep in the way that they are beautiful and convenient for most households, for example, the bottoms of sofas, and since most users cannot move the sofas once every time when sweeping the floor and then clean the bottom spaces of the sofas, a large amount of dust is accumulated in the bottom spaces of the sofas over time, and small articles can roll down to the bottoms of the sofas and are not easy to find.

Therefore, an intelligent automatic sofa bottom floor cleaning device is needed to solve the problem.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an intelligent automatic sofa bottom ground cleaning device which has the advantages of automatically cleaning the sofa bottom, automatically starting, saving energy and electricity, and solves the problems that most users cannot move the sofa once during sweeping and then clean the bottom space of the sofa, so that a large amount of dust can be accumulated in the bottom space of the sofa in a long time, and small articles can fall to the bottom of the sofa and are difficult to find.

In order to achieve the purposes of automatically cleaning the bottom of the sofa, automatically starting, saving energy and electricity, the invention provides the following technical scheme: the utility model provides an intelligence sofa bottom ground self-cleaning device, includes the shell, the cushion has been placed to the outside of shell, and the inside fixedly connected with of shell increases sofa elastic spring one, and the inside swing joint of shell has carries out clear cleaning device to ground, and the inside swing joint of shell has the trigger device who opens the stop state of control cleaning device.

Preferably, the cleaning device comprises a support, the support is fixedly connected to the outer portion of the shell, a motor is fixedly connected to the outer portion of the support, a first gear is fixedly connected to the outer portion of the motor, a second gear is meshed to the outer portion of the first gear, a lead screw is fixedly connected to the outer portion of the second gear, a sliding block is connected to the outer portion of the lead screw in a sliding mode, and a cleaning assembly is movably connected to the outer portion of the sliding block.

Preferably, the screw rod is rotatably connected to the inside of the shell, and the sliding block is slidably connected to the inside of the shell.

Preferably, the cleaning assembly comprises a third gear, the third gear is rotatably connected inside the sliding block, a connecting shaft is fixedly connected to the outside of the third gear, a fourth gear is fixedly connected to the outside of the connecting shaft, a scraping blade is fixedly connected to the outside of the fourth gear, and a cleaning brush is fixedly connected to the outside of the sliding block.

Preferably, the number of the fourth gears is not less than three, the fourth gears are arranged in a row at the bottom of the cleaning brush, the adjacent fourth gears are meshed with each other, the fourth gear connected with the third gear through a connecting shaft is used as a driving wheel, the other fourth gears are rotatably connected to the outside of the cleaning brush, the specification of the fourth gear is matched with that of the scraping blade, a sliding groove is formed in the surface of the shell, straight teeth are arranged on one side of the sliding groove, a smooth surface is arranged on the other side of the sliding groove, and the straight teeth are meshed with the three phases of the gears.

Preferably, trigger device includes slide and support plate, slide sliding connection is in the outside of shell, the outside fixedly connected with stock of slide, the outside rotation of stock is connected with the bull stick, the outside fixedly connected with spring two of bull stick, support plate fixed connection is in the inside of shell, the surface rotation of support plate is connected with the chaste tree wheel, the edge rotation of chaste tree wheel is connected with the gyro wheel, the outside fixedly connected with dog of chaste tree wheel, the outside fixedly connected with spring three of support plate, the outside fixedly connected with shelves pole of spring three, the outside swing joint of support plate has the trigger subassembly.

Preferably, the position of slide and cushion is corresponding, and the one end fixed connection of spring one is in the inside of shell, and other end fixed connection is in the outside of slide, and the corresponding and specification phase-match in position of bull stick and chaste tree wheel, shelves pole and chaste tree wheel corresponding and specification phase-match in position, and the one end fixed connection of spring two is in the outside of bull stick, and other end fixed connection is in the outside of stock, and shelves pole rotates the outside of connecting at the support plate, and the chaste tree wheel has eighteen teeth.

Preferably, the trigger assembly comprises a sliding rod, the sliding rod is connected to the outer portion of the carrier plate in a sliding mode, the outer portion of the sliding rod is fixedly connected with a first annular conductive block, the outer portion of the sliding rod is fixedly connected with a fourth spring, and the outer portion of the carrier plate is fixedly connected with a second annular conductive block.

Preferably, the first annular conductive block corresponds to the second annular conductive block in position and is matched with the second annular conductive block in specification, one end of the fourth spring is fixedly connected to the outside of the sliding rod, and the other end of the fourth spring is fixedly connected to the outside of the carrier plate.

Preferably, the second annular conductive block is electrically connected with the motor and an external power supply, the first annular conductive block is electrically connected with the motor and the external power supply, and when the first annular conductive block is in contact with the second annular conductive block, the external power supply is switched on and supplies power to the motor.

Advantageous effects

Compared with the prior art, the invention provides an intelligent automatic cleaning device for the bottom and the ground of a sofa, which has the following beneficial effects:

1. this intelligence sofa bottom ground self-cleaning device drives slider back and forth movement through the rotation of lead screw, can drive the brush cleaning round trip movement with slider fixed connection and clean ground, rotates along with four round trips of gear through the doctor-bar, can realize scraping off some solid that are difficult to directly clean on ground glues glutinous thing to can maintain the cleanness of sofa bottom.

2. This intelligence sofa bottom ground self-cleaning device, through shelves pole, the braking of three pairs of chases are taken turns to the spring, make the chases can only unidirectional rotation, the bull stick drives chases slowly to rotate once and for a while, can realize annular conducting block one and the contact of annular conducting block two through the dog to the extrusion of slide bar when chases turns a week, and then the switch on, the start motor circular telegram, the clean frequency of sofa is controlled to the more frequent degree that the user used to the sofa through setting up the number of teeth of chases and also having realized, if the user uses fewly, then clean the number of times is few, reach automatic start with this, the purpose of energy-conserving power saving.

Drawings

FIG. 1 is a sectional view of a portion of the present invention;

FIG. 2 is a schematic view of the cleaning assembly according to the present invention;

FIG. 3 is a schematic view of the connection of the gear four, the wiper blade and the sweeper brush structure of the present invention;

FIG. 4 is a schematic view showing the structural connection of the bracket, the motor and the gear according to the present invention;

FIG. 5 is a schematic structural view of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 1;

fig. 7 is an enlarged view of the structure at B in fig. 6.

In the figure: 1. a housing; 11. a chute; 2. a soft cushion; 3. a first spring; 4. a cleaning device; 41. a support; 42. a motor; 43. a first gear; 44. a second gear; 45. a screw rod; 46. a slider; 47. a sweeping assembly; 471. a third gear; 472. a connecting shaft; 473. a fourth gear; 474. scraping a blade; 475. cleaning with a brush; 5. a trigger device; 501. a slide plate; 502. a carrier plate; 503. a long rod; 504. a rotating rod; 505. a second spring; 506. a chaste tree wheel; 507. a roller; 508. a stopper; 509. a third spring; 510. a gear lever; 511. a trigger component; 5111. a slide bar; 5112. a first annular conductive block; 5113. a fourth spring; 5114. and a second annular conductive block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-5, an automatic floor cleaning device for the bottom of an intelligent sofa comprises a housing 1, a cushion 2 is placed outside the housing 1, a spring 3 for increasing the elasticity of the sofa is fixedly connected inside the housing 1, a cleaning device 4 for cleaning the floor is movably connected inside the housing 1, the cleaning device 4 comprises a support 41, the support 41 is fixedly connected outside the housing 1, a motor 42 is fixedly connected outside the support 41, a gear 43 is fixedly connected outside the motor 42, a gear 44 is meshed outside the gear 43, a screw 45 is fixedly connected outside the gear 44, the screw 45 is rotatably connected inside the housing 1, a slider 46 is slidably connected outside the screw 45, the slider 46 is slidably connected inside the housing 1, a cleaning component 47 is movably connected outside the slider 46, the cleaning component 47 comprises a gear three 471, a chute 11 is formed in the surface of the housing 1, one side of the sliding chute 11 is provided with straight teeth, the other side of the sliding chute is a smooth surface, the straight teeth are meshed with a gear three 471, the gear three 471 is rotatably connected inside the sliding block 46, the outside of the gear three 471 is fixedly connected with a connecting shaft 472, the outside of the connecting shaft 472 is fixedly connected with a gear four 473, the outside of the gear four 473 is fixedly connected with a scraping blade 474, the specification of the gear four 473 is matched with the specification of the scraping blade 474, the outside of the sliding block 46 is fixedly connected with a cleaning brush 475, the gear four 473 is not lower than three, the cleaning brushes 475 are arranged in a row at the bottom of the cleaning brush 475, the adjacent gears four 473 are meshed with each other, the gear four 473 connected with the gear three 471 through the connecting shaft 472 is used as a driving wheel, the rest gears four 473 are rotatably connected outside the cleaning brush 475, and the inside of the housing 1 is movably connected with a trigger device 5 for controlling the start-stop state of the cleaning device 4.

Example two:

referring to fig. 1 and 6-7, an intelligent sofa bottom ground automatic cleaning device comprises a housing 1, a cushion 2 is placed outside the housing 1, a spring I3 for increasing the elasticity of the sofa is fixedly connected inside the housing 1, a cleaning device 4 for cleaning the ground is movably connected inside the housing 1, a trigger device 5 for controlling the starting and stopping state of the cleaning device 4 is movably connected inside the housing 1, the trigger device 5 comprises a sliding plate 501 and a support plate 502, one end of the spring I3 is fixedly connected inside the housing 1, the other end of the spring I is fixedly connected outside the sliding plate 501, the positions of the sliding plate 501 and the cushion 2 correspond, the sliding plate 501 is slidably connected outside the housing 1, a long rod 503 is fixedly connected outside the sliding plate 501, a rotating rod 504 is rotatably connected outside the long rod 503, a spring II 505 is fixedly connected outside the rotating rod 504, one end of the spring II 505 is fixedly connected outside the rotating rod 504, the other end is fixedly connected to the outside of the long rod 503, the carrier plate 502 is fixedly connected to the inside of the housing 1, the surface of the carrier plate 502 is rotatably connected with a chaste 506, the chaste 506 has eighteen teeth, the rotating rod 504 corresponds to the position and is matched with the specification of the chaste 506, the edge of the chaste 506 is rotatably connected with a roller 507, the outside of the chaste 506 is fixedly connected with a stop block 508, the outside of the carrier plate 502 is fixedly connected with a spring III 509, the outside of the spring III 509 is fixedly connected with a stop rod 510, the stop rod 510 is rotatably connected to the outside of the carrier plate 502, the stop rod 510 corresponds to the position and is matched with the specification of the chaste 506, the outside of the carrier plate 502 is movably connected with a trigger assembly 511, the trigger assembly 511 comprises a sliding rod 5111, the sliding rod 5111 is slidably connected to the outside of the carrier plate 502, the outside of the sliding rod 5111 is fixedly connected with a ring-shaped conductive block I5112, the outside of the sliding rod 5111 is fixedly connected with a spring IV 5113, one end of the sliding rod 5113 is fixedly connected to the outside of the sliding rod 5111, the other end of the first conductive block is fixedly connected to the outside of the carrier plate 502, a second annular conductive block 5114 is fixedly connected to the outside of the carrier plate 502, and the first annular conductive block 5112 corresponds to the second annular conductive block 5114 in position and is matched in specification.

Example three:

referring to fig. 1-7, an automatic floor cleaning device for the bottom of an intelligent sofa comprises a housing 1, a cushion 2 is placed outside the housing 1, a spring 3 for increasing the elasticity of the sofa is fixedly connected inside the housing 1, a cleaning device 4 for cleaning the floor is movably connected inside the housing 1, the cleaning device 4 comprises a support 41, the support 41 is fixedly connected outside the housing 1, a motor 42 is fixedly connected outside the support 41, a gear 43 is fixedly connected outside the motor 42, a gear 44 is meshed outside the gear 43, a screw 45 is fixedly connected outside the gear 44, the screw 45 is rotatably connected inside the housing 1, a slider 46 is slidably connected outside the screw 45, the slider 46 is slidably connected inside the housing 1, a cleaning component 47 is movably connected outside the slider 46, the cleaning component 47 comprises a gear three 471, a chute 11 is formed in the surface of the housing 1, one side of the sliding chute 11 is provided with straight teeth, the other side of the sliding chute is a smooth surface, the straight teeth are meshed with the gear three 471, the gear three 471 is rotatably connected inside the sliding block 46, the outside of the gear three 471 is fixedly connected with the connecting shaft 472, the outside of the connecting shaft 472 is fixedly connected with the gear four 473, the outside of the gear four 473 is fixedly connected with the scraping blade 474, the specification of the gear four 473 is matched with the specification of the scraping blade 474, the outside of the sliding block 46 is fixedly connected with the cleaning brush 475, the gear four 473 is not lower than three, the cleaning brushes 475 are arranged in a row at the bottom of the cleaning brush 475, the adjacent gears four 473 are meshed with each other, the gear four 473 connected with the gear three 471 through the connecting shaft 472 is used as a driving wheel, and the other gears four 473 are rotatably connected outside the cleaning brush 475.

The inside swing joint of shell 1 has the trigger device 5 of the open stop state of control cleaning device 4, trigger device 5 includes slide plate 501 and support plate 502, the one end fixed connection of spring one 3 is in the inside of shell 1, the other end fixed connection is in the outside of slide plate 501, slide plate 501 corresponds to the position of cushion 2, slide plate 501 sliding connection is in the outside of shell 1, the outside fixed connection of slide plate 501 has stock 503, the outside rotation of stock 503 has bull stick 504, the outside fixed connection of bull stick 504 has spring two 505, the one end fixed connection of spring two 505 is in the outside of bull stick 504, the other end fixed connection is in the outside of stock 503, support plate 502 fixed connection is in the inside of shell 1, the surface rotation of support plate 502 is connected with the chaste tree 506, chaste tree 506 has eighteen teeth, the position of bull stick 504 and chaste tree 506 corresponds and the specification phase-match, the edge rotation of chaste tree 506 is connected with gyro wheel 507, a stop block 508 is fixedly connected to the outside of the chaste wheel 506, a spring III 509 is fixedly connected to the outside of the carrier plate 502, a stop rod 510 is fixedly connected to the outside of the spring III 509, the stop rod 510 is rotatably connected to the outside of the carrier plate 502, the stop rod 510 corresponds to the chaste wheel 506 in position and is matched in specification, a trigger assembly 511 is movably connected to the outside of the carrier plate 502, the trigger assembly 511 comprises a sliding rod 5111, the sliding rod 5111 is slidably connected to the outside of the carrier plate 502, an annular conductive block I5112 is fixedly connected to the outside of the sliding rod 5111, a spring IV 5113 is fixedly connected to the outside of the sliding rod 5111, one end of the spring IV 5113 is fixedly connected to the outside of the sliding rod 5111, the other end of the spring IV is fixedly connected to the outside of the carrier plate 502, an annular conductive block II 5114 is fixedly connected to the outside of the carrier plate 502, the annular conductive block I5112 corresponds to the annular conductive block II 5114 in position and is matched in specification, and the annular conductive block II 5114 is electrically connected to the motor 42 and an external power supply, the first annular conductive block 5112 is electrically connected with the motor 42 and an external power supply, and when the first annular conductive block 5112 is contacted with the second annular conductive block 5114, the external power supply is switched on and supplies power to the motor 42.

The working principle is that when a user uses the sofa, when the user sits on the sofa, the cushion 2 is squeezed, the slide plate 501 is squeezed by the cushion 2, the slide plate 501 slides downwards to compress the first spring 3, the slide plate 501 slides downwards to drive the long rod 503 to move downwards, the long rod 503 slides downwards to drive the rotating rod 504 to move downwards, as the edge teeth squeeze the blocking rod 510 when the chaste wheel 506 rotates forwards, the blocking rod 510 squeezes the third spring 509, then under the restoring force action of the third spring 509, the blocking rod 510 slides next to the surface of the chaste wheel 506, the reverse rotation of the chaste wheel 506 is blocked by the blocking rod 510, the long rod 503 moves downwards to be blocked by the chaste wheel 506 to rotate, the long rod 503 rotates to compress the second spring 505, further under the restoring force of the second spring 505, the long rod 503 slides next to the surface of the chaste wheel 506, when the user gets up, under the restoring force of the first spring 3, the first spring 3 squeezes the slide plate 501, the sliding plate 501 slides upwards, the sliding plate 501 slides upwards to drive the long rod 503 to move upwards, the long rod 503 slides upwards to drive the rotating rod 504 to move upwards, the rotating rod 504 moves upwards to drive the chaste 506 to rotate forwards, when the number of times of using the sofa by a user is consistent with the number of teeth of the chaste 506, the chaste 506 rotates for a circle, the stop block 508 fixedly connected with the chaste 506 also rotates for a circle along with the chaste 506, the slide rod 5111 is extruded once when the stop block 508 rotates for a circle, the slide rod 5111 slides when being extruded, the slide rod 5111 slides to compress the spring four 5113, the slide rod 5111 slides to drive the annular conductive block one 5112 to slide downwards, and when the annular conductive block one 5112 is in contact with the annular conductive block two 5114, the external power supply is switched on and supplies power to the motor 42.

When the motor 42 is powered on, the motor 42 works to drive the first gear 43 to rotate, the first gear 43 rotates to drive the second gear 44 to rotate, the second gear 44 rotates to drive the screw rod 45 to rotate, the screw rod 45 rotates to drive the sliding block 46 to slide back and forth, the sliding block 46 slides back and forth to drive the cleaning brush 475 to move back and forth to clean the ground, meanwhile, the sliding block 46 slides back and forth to drive the third gear 471 to move, the third gear 471 moves to rotate under the restriction action of straight teeth arranged inside the sliding groove 11, the third gear 471 rotates to drive the connecting shaft 472 to rotate, the connecting shaft 472 rotates to drive the fourth gear 473 to rotate, the fourth gear 473 rotates to drive the scraping blade 474 to rotate, materials which are difficult to clean on the ground can be scraped by the scraping blade 474, and therefore the bottom of the sofa can be kept clean.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an intelligence sofa bottom ground self-cleaning device, includes shell (1), its characterized in that: cushion (2) have been placed to the outside of shell (1), and the internal connection of shell (1) has spring one (3) that increases sofa elasticity, and the internal connection of shell (1) has cleaning device (4) that carry out cleanness to ground, and the internal connection of shell (1) has trigger device (5) of opening the stop state of control cleaning device (4).

2. The automatic floor cleaning device for the bottom of the intelligent sofa according to claim 1, wherein: cleaning device (4) include support (41), support (41) fixed connection is in the outside of shell (1), the outside fixedly connected with motor (42) of support (41), the outside fixedly connected with gear (43) of motor (42), the outside meshing of gear (43) has gear two (44), the outside fixedly connected with lead screw (45) of gear two (44), the outside sliding connection of lead screw (45) has slider (46), the outside swing joint of slider (46) has cleaning assembly (47).

3. The automatic floor cleaning device for the bottom of the intelligent sofa according to claim 2, wherein: the screw rod (45) is rotatably connected to the inside of the shell (1), and the sliding block (46) is slidably connected to the inside of the shell (1).

4. The automatic floor cleaning device for the bottom of the intelligent sofa according to claim 2, wherein: the cleaning assembly (47) comprises a gear III (471), the gear III (471) is rotatably connected inside the sliding block (46), a connecting shaft (472) is fixedly connected to the outside of the gear III (471), a gear IV (473) is fixedly connected to the outside of the connecting shaft (472), a scraping blade (474) is fixedly connected to the outside of the gear IV (473), and a cleaning brush (475) is fixedly connected to the outside of the sliding block (46).

5. The automatic floor cleaning device for the bottoms of the intelligent sofas as claimed in claim 4, wherein: the number of the gears IV (473) is not less than three, the gears IV (473) are arranged at the bottom of the cleaning brush (475) in a row, the adjacent gears IV (473) are meshed with each other, the gear IV (473) connected with the gear III (471) through the connecting shaft (472) serves as a driving wheel, the other gears IV (473) are rotatably connected to the outside of the cleaning brush (475), the specification of the gear IV (473) is matched with that of the scraping blade (474), the surface of the shell (1) is provided with a sliding groove (11), one side of the sliding groove (11) is provided with straight teeth, the other side of the sliding groove is a smooth surface, and the straight teeth are meshed with the gear III (471).

6. The automatic floor cleaning device for the bottom of the intelligent sofa according to claim 1, wherein: trigger device (5) are including slide (501) and support plate (502), slide (501) sliding connection is in the outside of shell (1), the outside fixedly connected with stock (503) of slide (501), the outside rotation of stock (503) is connected with bull stick (504), the outside fixedly connected with spring two (505) of bull stick (504), support plate (502) fixed connection is in the inside of shell (1), the surface rotation of support plate (502) is connected with chaste tree wheel (506), the edge rotation of chaste tree wheel (506) is connected with gyro wheel (507), the outside fixedly connected with dog (508) of chaste tree wheel (506), the outside fixedly connected with spring three (509) of support plate (502), the outside fixedly connected with shelves pole (510) of spring three (509), the outside swing joint of support plate (502) has trigger component (511).

7. The intelligent sofa bottom floor automatic cleaning device according to claim 6, characterized in that: the position of slide (501) and cushion (2) is corresponding, the one end fixed connection of spring (3) is in the inside of shell (1), other end fixed connection is in the outside of slide (501), bull stick (504) and the position of chasing tree wheel (506) are corresponding and the specification phase-match, the position of shelves pole (510) and chasing tree wheel (506) is corresponding and the specification phase-match, the one end fixed connection of spring two (505) is in the outside of bull stick (504), the other end fixed connection is in the outside of stock (503), shelves pole (510) rotate to be connected in the outside of support plate (502).

8. The intelligent sofa bottom floor automatic cleaning device according to claim 6, characterized in that: the trigger assembly (511) comprises a sliding rod (5111), the sliding rod (5111) is connected to the outside of the carrier plate (502) in a sliding mode, a first annular conductive block (5112) is fixedly connected to the outside of the sliding rod (5111), a fourth spring (5113) is fixedly connected to the outside of the sliding rod (5111), and a second annular conductive block (5114) is fixedly connected to the outside of the carrier plate (502).

9. The automatic floor cleaning device for the bottom of the intelligent sofa according to claim 1, wherein: the first annular conductive block (5112) corresponds to the second annular conductive block (5114) in position and is matched with the second annular conductive block in specification, one end of the spring four (5113) is fixedly connected to the outer part of the sliding rod (5111), and the other end of the spring four (5113) is fixedly connected to the outer part of the carrier plate (502).