CN212186308U - Soap dispenser - Google Patents

Abstract

The utility model relates to a soap dispenser. The soap dispenser of the utility model comprises: a housing having a reservoir and a nozzle interface; the pressure pump is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid storage bottle, and the liquid outlet is communicated with the nozzle interface; the power mechanism is used for providing power for the pressure pump; the nozzle assembly comprises a nozzle base detachably mounted on the shell and a nozzle arranged on the nozzle base, and the nozzle is connected to the nozzle interface in an inserting mode. The soap dispenser of the utility model has the advantage of selecting the output effect of the soap liquid or the disinfectant according to the user requirements.

Description

Soap dispenser

Technical Field

The present invention relates to a system for producing and releasing a solution suitable for use in human hygiene, and more particularly to a soap dispenser for producing and releasing a solution suitable for washing and disinfecting hands.

Background

The soap dispenser is a device which can extrude and output soap liquid for cleaning hands and faces. The soap dispenser usually comprises a liquid storage bottle or a liquid storage tank for storing soap liquid, wherein a drawing device which is used for drawing up the soap liquid and is provided with a nozzle is arranged on the liquid storage bottle or the liquid storage tank. However, the old soap dispenser which can only output soap liquid simply cannot meet the pursuit of modern people for comfortable life. Therefore, the foam type soap dispenser which can output the common soap liquid in the form of foam can be produced.

However, the conventional soap dispenser has only a single output effect, and cannot randomly select a desired soap solution output effect according to the user's demand. Therefore, the inventor wants to design a soap dispenser which can select the soap liquid output effect according to the user requirements.

SUMMERY OF THE UTILITY MODEL

Based on this, the present invention provides a soap dispenser, which has the advantage of selecting the output effect of soap according to the user's requirement.

A soap dispenser, comprising: a housing having a reservoir and a nozzle interface; the pressure pump is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid storage bottle, and the liquid outlet is communicated with the nozzle interface; the power mechanism is used for providing power for the pressure pump; the nozzle assembly comprises a nozzle base detachably mounted on the shell and a nozzle arranged on the nozzle base, and the nozzle is connected to the nozzle interface in an inserting mode.

Compared with the prior art, the soap dispenser can select the soap lye output effect according to the user demand. Specifically, the soap liquid in the liquid storage bottle is directly pumped to the nozzle assembly by using the pressure pump, and the soap liquid is not subjected to any processing treatment. Then, because the nozzle component is detachably arranged on the shell, a user can select the nozzle component with different nozzle structures according to requirements, and the soap liquid is processed by utilizing the structure of the nozzle component, so that the soap liquid can be output in any form of liquid form and foam form, and the effect required by the user is achieved. Meanwhile, disinfectant can be injected into the liquid storage bottle, a user can select nozzle assemblies with different nozzle structures according to requirements, and the disinfectant is processed by utilizing the structures of the nozzle assemblies, so that the disinfectant can be output in any form of liquid form and atomization form, and the effect required by the user is achieved.

Furthermore, a through hole is formed in the nozzle base, a threaded hole corresponding to the through hole is formed in the shell, and the nozzle base is connected to the shell through a bolt.

Further, the nozzle is any one of a general nozzle, an atomizing nozzle, and a foam nozzle.

Further, the pressure pump comprises a pressure pump body, a pressure pump rod, a cone valve and a spring, the liquid inlet is arranged on the pressure pump body, the liquid outlet is arranged on the pressure pump body, a soap liquid cavity is arranged in the pressure pump body and is respectively communicated with the liquid inlet and the liquid outlet, a liquid discharge port communicated with the liquid outlet is arranged on the wall surface of the soap liquid cavity, the pressure pump rod makes a piston motion in the soap liquid cavity of the pressure pump body, and the cone valve blocks the liquid discharge port under the elastic force of the spring; when the pressure pump pumps liquid, the pressure pump rod moves towards the direction far away from the liquid inlet, the liquid flows into the soap liquid cavity from the liquid storage bottle through the liquid inlet, and the cone valve seals the liquid outlet under the action of the elastic force of the spring; when the pressure pump pushes out liquid, the pressure pump rod moves towards the direction close to the liquid inlet, the liquid pushes the cone valve open under the action of the pressure pump rod, and the liquid flows out of the liquid outlet.

Further, the side of week of force pump pole is equipped with first recess, the force pump still includes first sealing washer, first sealing washer cover is established week side of force pump pole, first sealing washer cover is established in the first recess, week side of first sealing washer is hugged closely the wall in soap lye chamber.

Furthermore, the shell is provided with an air distribution interface, the nozzle assembly further comprises an air charging pipeline, one end of the air charging pipeline is inserted into the air distribution interface, the other end of the air charging pipeline is connected into the nozzle, the soap dispenser further comprises an air distribution pump, the air distribution pump is provided with an air inlet and an air outlet, the air inlet is communicated with the outside, and the air outlet is communicated with the air distribution interface.

Further, the gas distribution pump comprises a gas distribution pump body, a gas distribution pump rod and an exhaust valve, wherein the gas inlet is arranged on the gas distribution pump body, the gas outlet is arranged on the gas distribution pump body, the gas distribution pump rod makes piston motion in a cavity of the gas distribution pump body, the gas distribution pump rod divides the cavity of the gas distribution pump body into two spaces, the two spaces are respectively a first space and a second space, the first space is communicated with the gas inlet, the second space is communicated with the gas outlet, the gas distribution pump rod is provided with a gas hole, the gas hole communicates the first space with the second space, the exhaust valve is arranged on the gas distribution pump rod in a penetrating manner, and the exhaust valve seals the gas hole; when the gas distribution pump pumps air, the gas distribution pump rod moves towards the direction far away from the gas outlet, the exhaust valve is opened, and external gas enters the second space after sequentially passing through the gas inlet, the first space and the gas hole; when the gas distribution pump exhausts, the gas distribution pump rod moves towards the direction close to the gas outlet, the gas outlet is sealed by the exhaust valve, and gas in the second space flows out of the gas outlet.

Further, the side of week of distribution pump pole is equipped with the second recess, the distribution pump still includes the second sealing washer, the second sealing washer cover is established the side of week of distribution pump pole, the second sealing washer cover is established in the second recess, the side of week of second sealing washer is hugged closely the wall of the cavity of the distribution pump body.

Further, the power mechanism is respectively connected with the pressure pump and the gas distribution pump, and the power mechanism provides power for the pressure pump and the gas distribution pump at the same time.

Further, be equipped with first spout on the force pump pole, be equipped with the second spout on the distribution pump pole, power unit includes motor, gear drive, pivot, first carousel, second carousel, first slider, second slider, the motor passes through gear drive drives the pivot rotates, first carousel sets up in the pivot, the second carousel sets up in the pivot, first slider sets up on the first carousel, first slider winds the axis revolution of pivot, first slider is in slide in the first spout, the second slider sets up on the second carousel, the second slider winds the axis revolution of pivot, the second slider is in slide in the second spout.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a soap dispenser according to an embodiment;

FIG. 2 is a schematic view of the connection of the housing to the nozzle assembly according to an embodiment;

FIG. 3 is a general exploded view of the pressure pump, the air distribution pump and the power mechanism according to the embodiment;

FIG. 4 is a schematic internal view of a pressure pump according to an embodiment;

FIG. 5 is a schematic view of the inside of the air distribution pump according to the embodiment;

reference numerals:

100. a housing; 110. a liquid storage bottle; 120. a nozzle interface; 130. a gas distribution interface; 140. a threaded hole; 200. a pressure pump; 210. a pressure pump body; 211. a liquid inlet; 212. a liquid outlet; 213. a soap lye chamber; 214. a liquid discharge port; 220. a pressure pump rod; 221. a first groove; 222. a first chute; 230. a cone valve; 240. a spring; 250. a first seal ring; 260. a valve body; 270. a guide member; 300. an air pump is arranged; 310. a gas distribution pump body; 311. an air inlet; 312. an air outlet; 313. a first space; 314. a second space; 320. a gas distribution pump rod; 321. air holes; 322. a second groove; 323. a second chute; 330. an exhaust valve; 340. a second seal ring; 400. a power mechanism; 410. a power base; 420. a motor; 430. a gear transmission mechanism; 440. a rotating shaft; 450. a first turntable; 460. a second turntable; 470. a first slider; 480. a second slider; 500. a nozzle assembly; 510. a nozzle base; 511. a through hole; 520. a nozzle; 530. and (3) an inflation pipeline.

Detailed Description

A soap dispenser, referring to fig. 1 and 2, comprises a housing 100, a nozzle assembly 500 disposed on the housing 100, a pressure pump 200, an air distribution pump 300, and a power mechanism 400. Wherein, the nozzle assembly 500 is detachably mounted on the housing 100, the pressure pump 200 is used for providing soap liquid for the nozzle assembly 500, the gas distribution pump 300 is used for providing gas for the nozzle assembly 500, and the power mechanism 400 is used for providing power for the pressure pump 200 and the gas distribution pump 300.

Referring to fig. 1 and 2, a liquid storage bottle 110 is installed in the housing 100, and the liquid storage bottle 110 is used for storing soap or disinfectant. The bottom of the housing 100 is provided with a nozzle port 120, an air distribution port 130, and a threaded hole 140. One end of the nozzle port 120 is connected to the pressure pump 200, and the other end of the nozzle port 120 is connected to the nozzle assembly 500. One end of the air distribution interface 130 is communicated with the air distribution pump 300, and the other end of the air distribution interface 130 is communicated with the nozzle assembly 500. The nozzle assembly 500 is screwed with the screw hole 140 of the housing 100 by a bolt.

Referring to fig. 1 and 2, the nozzle assembly 500 includes a nozzle base 510 and a nozzle 520. Specifically, the nozzle base 510 is provided with a through hole 511, the through hole 511 corresponds to the threaded hole 140 on the housing 100, and the bolt is inserted into the nozzle base 510 and then is in threaded connection with the threaded hole 140, so that the nozzle base 510 and the housing 100 are fixedly connected. The nozzle 520 is fixedly disposed on the nozzle base 510, and the liquid inlet end of the nozzle 520 is inserted into the nozzle port 120. The nozzle 520 may be any one of a general nozzle, an atomizing nozzle, and a foaming nozzle in the related art. Wherein, the common nozzle does not carry out any treatment on the soap liquid or the disinfectant, so that the soap liquid or the disinfectant is output in a liquid form; the atomizing nozzle atomizes the disinfectant to output the disinfectant in an atomizing form; the foam nozzle carries out foam-making treatment on the soap liquid so that the soap liquid is output in a foam form.

Referring to fig. 1 and 2, to make the foamed soap liquid more fine, the nozzle assembly 500 further includes an air charging pipe 530. One end of the gas filling pipe 530 is inserted into the gas distribution port 130, the other end of the gas filling pipe 530 is inserted into the nozzle 520, and the nozzle 520 used herein is a foam nozzle, while the nozzle assembly 500 that outputs in a liquid form or an atomized form may not have the gas filling pipe 530. In the foam generating process, the pressure pump 200 pumps the soap solution to the foam generator of the foam nozzle to make the soap solution foam, and then the air is blown by the air distribution pump 300 to further improve the foam effect of the soap solution.

Referring to fig. 1, 3 and 4, the pressure pump 200 has a liquid inlet 211 and a liquid outlet 212, the liquid inlet 211 of the pressure pump 200 is communicated with the liquid storage bottle 110, and the liquid outlet 212 of the pressure pump 200 is communicated with the nozzle interface 120. Specifically, the pressure pump 200 includes a pressure pump body 210, a pressure pump rod 220, a cone valve 230, a spring 240, and a first seal ring 250. The pressure pump body 210 is provided with the liquid inlet 211 and the liquid outlet 212, the liquid inlet 211 is disposed on one side of the pressure pump body 210, and the liquid outlet 212 is disposed on the other side of the pressure pump body 210. A soap liquid cavity 213 is provided in the pressure pump body 210, and the soap liquid cavity 213 is respectively communicated with the liquid inlet 211 and the liquid outlet 212. A liquid outlet 214 is provided on the top surface of the soap liquid chamber 213, and the soap liquid chamber 213 communicates with the liquid outlet 212 through the liquid outlet 214. The pressure pump rod 220 performs a piston movement within the soap chamber 213 of the pressure pump block 210. The first groove 221 is disposed on the peripheral side of the pressure pump rod 220, and the liquid inlet 211 and the liquid outlet 212 are both located above the pressure pump rod 220. A first slide groove 222 is provided in a portion of the pressure pump rod 220 that does not protrude into the pressure pump body 210. The cone valve 230 blocks the discharge port 214 by the elastic force of the spring 240. The first sealing ring 250 is sleeved on the periphery of the pressure pump rod 220, the first sealing ring 250 is sleeved in the first groove 221, and the periphery of the first sealing ring 250 is tightly attached to the peripheral wall surface of the soap lye cavity 213.

When the pressure pump 200 pumps liquid, the pressure pump rod 220 moves away from the liquid inlet 211, the liquid flows from the liquid storage bottle 110 into the space above the pressure pump rod 220 in the soap liquid cavity 213 through the liquid inlet 211, and the cone valve 230 closes the liquid outlet 214 under the elastic force of the spring 240. When the pressure pump 200 pushes out the liquid, the pressure pump rod 220 moves toward the liquid inlet 211, the liquid soap pushes open the cone valve 230 by the pressure pump rod 220, and the liquid flows out of the liquid outlet 212.

Referring to fig. 1, 3 and 4, in the present embodiment, a valve body 260 is disposed on the top surface of the pressure pump body 210, a cavity of the valve body 260 is respectively communicated with the liquid outlet 214 and the liquid outlet 212, the liquid outlet 214 is located at the bottom of the valve body 260, and the liquid outlet 212 is located at the right side of the valve body 260. The cone valve 230 and the spring 240 are both mounted within a cavity of the valve body 260. The tapered surface of the tapered valve 230 abuts against the discharge port 214. One end of the spring 240 is connected to the inner top surface of the valve body 260, the other end of the spring 240 is connected to the cone valve 230, and the acting force of the spring 240 on the cone valve 230 is perpendicular to the hole surface of the liquid outlet 214. In order to guide the movement of the cone valve 230, a guide 270 is provided on the end face of the cone valve 230 remote from the discharge opening 214, which guide 270 is inserted into the spring 240.

Referring to fig. 1, 3 and 5, the air distribution pump 300 has an air inlet 311 and an air outlet 312, the air inlet 311 of the air distribution pump 300 is communicated with the outside, and the air outlet 312 of the air distribution pump 300 is communicated with the air distribution interface 130. Specifically, the gas distribution pump 300 includes a gas distribution pump body 310, a gas distribution pump rod 320, an exhaust valve 330, and a second sealing ring 340. The air distribution pump body 310 is provided with the air inlet 311 and the air outlet 312, the air inlet 311 is arranged at the bottom of the air distribution pump body 310, and the air outlet 312 is arranged at the top of the air distribution pump body 310. The air distribution pump rod 320 performs a piston motion in the cavity of the air distribution pump body 310, the air distribution pump rod 320 divides the cavity of the air distribution pump body 310 into two spaces, the two spaces are a first space 313 and a second space 314 respectively, the first space 313 is communicated with the air inlet 311, and the second space 314 is communicated with the air outlet 312. An air hole 321 is formed in the air distribution pump rod 320, and the air hole 321 connects the first space 313 and the second space 314. A second groove 322 is formed on the circumferential side surface of the valve pump rod 320. A second sliding groove 323 is provided in a portion of the air distribution pump rod 320 that does not protrude into the air distribution pump body 310. The exhaust valve 330 is arranged on the air distribution pump rod 320 in a penetrating way, and the exhaust valve 330 seals the air hole 321; in the present embodiment, the exhaust valve 330 is a silica gel pad of the prior art, and the structure thereof is similar to that of a steam valve fitting of a conventional electric rice cooker, and the specific structure of the exhaust valve 330 will not be discussed herein. The second sealing ring 340 is sleeved on the periphery of the air distribution pump rod 320, the second sealing ring 340 is sleeved in the second groove 322, and the periphery of the second sealing ring 340 is tightly attached to the wall surface of the cavity of the air distribution pump body 310.

When the air distribution pump 300 draws air, the air distribution pump rod 320 moves in a direction away from the air outlet 312, external air enters the first space 313 through the air inlet 311, then the air pushes open the exhaust valve 330, and the air enters the second space 314 through the air hole 321, so that the air distribution pump 300 is inflated. When the air distribution pump 300 exhausts, the air distribution pump rod 320 moves towards the direction close to the air outlet 312, negative pressure is generated in the air distribution pump body 310, the air outlet 321 is sealed by the exhaust valve 330, and air in the second space 314 flows out from the air outlet 312.

Referring to fig. 1 and 3, the power mechanism 400 is respectively connected to the pressure pump 200 and the gas distribution pump 300, and the power mechanism 400 simultaneously provides power for the pressure pump 200 and the gas distribution pump 300. Specifically, the power mechanism 400 includes a power base 410, a motor 420, a gear transmission mechanism 430, a rotation shaft 440, a first rotating disc 450, a second rotating disc 460, a first sliding block 470, and a second sliding block 480. The power base 410 is respectively connected with the pressure pump body 210 and the air distribution pump body 310, the power base 410 is arranged on the bottom surface of the pressure pump body 210, and the power base 410 is arranged on the bottom surface of the air distribution pump body 310. The motor 420 is mounted in the base, and the output end of the motor 420 is connected with the input end of the gear transmission mechanism 430. The gear of the gear transmission mechanism 430 is rotatably disposed in the power base 410 through a shaft, and the output end of the gear transmission mechanism 430 is connected with the rotating shaft 440. The rotating shaft 440 is rotatably disposed in the power base 410. The first turntable 450 is fixedly disposed at one end of the rotating shaft 440, the first turntable 450 is disc-shaped, and an axis of the first turntable 450 and an axis of the rotating shaft 440 are located on the same straight line. The second turntable 460 is fixedly disposed at the other end of the rotating shaft 440, the second turntable 460 is disc-shaped, and the axis of the second turntable 460 and the axis of the rotating shaft 440 are located on the same straight line. The first slider 470 is fixedly disposed on the first rotating disk 450, the first slider 470 is located at one side of the center of the first rotating disk 450, the first slider 470 revolves around the axis of the rotating shaft 440, and the first slider 470 slides in the first sliding groove 222. The second slider 480 is fixedly disposed on the second turntable 460, the second slider 480 is located at one side of a circle center of the second turntable 460, the second slider 480 revolves around an axis of the rotating shaft 440, and the second slider 480 slides in the second sliding groove 323.

The motor 420 drives the rotating shaft 440 to rotate through the gear transmission mechanism 430, so as to drive the first sliding block 470 to rotate around the axis of the rotating shaft 440, and at the same time, the pressure pump rod 220 performs piston movement in the pressure pump body 210 under the limit of the first sliding slot 222 and the pressure pump body 210. Similarly, when the first slider 470 rotates around the axis of the rotating shaft 440, the second slider 480 also rotates around the axis of the rotating shaft 440, and under the second misalignment and the limit of the valve block 310, the valve rod 320 performs a piston motion in the valve block 310.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. A soap dispenser, comprising:

a housing (100) having a reservoir (110) and a nozzle interface (120);

a pressure pump (200) having a liquid inlet (211) and a liquid outlet (212), the liquid inlet (211) communicating with the reservoir (110), the liquid outlet (212) communicating with the nozzle interface (120);

a power mechanism (400) that powers the pressure pump (200);

the nozzle assembly (500) comprises a nozzle base (510) detachably mounted on the shell (100), and a nozzle (520) arranged on the nozzle base (510), wherein the nozzle (520) is plugged on the nozzle interface (120).

2. The soap dispenser of claim 1, wherein: the nozzle base (510) is provided with a through hole (511), the shell (100) is provided with a threaded hole (140) corresponding to the through hole (511), and the nozzle base (510) is connected to the shell (100) through a bolt.

3. The soap dispenser of claim 1, wherein: the nozzle (520) is any one of a common nozzle, an atomizing nozzle and a foam nozzle in the prior art.

4. The soap dispenser of claim 1, wherein: the pressure pump (200) comprises a pressure pump body (210), a pressure pump rod (220), a cone valve (230) and a spring (240), wherein the liquid inlet (211) is arranged on the pressure pump body (210), the liquid outlet (212) is arranged on the pressure pump body (210), a soap liquid cavity (213) is arranged in the pressure pump body (210), the soap liquid cavity (213) is respectively communicated with the liquid inlet (211) and the liquid outlet (212), a liquid outlet (214) communicated with the liquid outlet (212) is arranged on the wall surface of the soap liquid cavity (213), the pressure pump rod (220) performs piston movement in the soap liquid cavity (213) of the pressure pump body (210), and the cone valve (230) blocks the liquid outlet (214) under the elastic force of the spring (240);

when the pressure pump (200) pumps liquid, the pressure pump rod (220) moves to a direction away from the liquid inlet (211), the liquid flows from the liquid storage bottle (110) to the soap liquid cavity (213) through the liquid inlet (211), and the cone valve (230) closes the liquid outlet (214) under the action of the elastic force of the spring (240); when the pressure pump (200) pushes out liquid, the pressure pump rod (220) moves towards the direction close to the liquid inlet (211), the liquid pushes open the cone valve (230) under the action of the pressure pump rod (220), and the liquid flows out from the liquid outlet (212).

5. The soap dispenser of claim 4, wherein: the side of week of force pump pole (220) is equipped with first recess (221), force pump (200) still include first sealing washer (250), first sealing washer (250) cover is established week side of force pump pole (220), first sealing washer (250) cover is established in first recess (221), week side of first sealing washer (250) is hugged closely the wall of soap lye chamber (213).

6. The soap dispenser of claim 4, wherein: the soap dispenser is characterized in that an air distribution interface (130) is arranged on the shell (100), the nozzle assembly (500) further comprises an air charging pipeline (530), one end of the air charging pipeline (530) is inserted into the air distribution interface (130), the other end of the air charging pipeline (530) is connected into the nozzle (520), the soap dispenser further comprises an air distribution pump (300), the air distribution pump (300) is provided with an air inlet (311) and an air outlet (312), the air inlet (311) is communicated with the outside, and the air outlet (312) is communicated with the air distribution interface (130).

7. The soap dispenser of claim 6, wherein: the air distribution pump (300) comprises an air distribution pump body (310), an air distribution pump rod (320) and an exhaust valve (330), wherein an air inlet (311) is formed in the air distribution pump body (310), an air outlet (312) is formed in the air distribution pump body (310), the air distribution pump rod (320) is arranged in a cavity of the air distribution pump body (310) to move in a piston mode, the air distribution pump rod (320) divides the cavity of the air distribution pump body (310) into two spaces which are respectively a first space (313) and a second space (314), the first space (313) is communicated with the air inlet (311), the second space (314) is communicated with the air outlet (312), an air hole (321) is formed in the air distribution pump rod (320), the first space (313) is communicated with the second space (314) through the air hole (321), and the exhaust valve (330) is arranged on the air distribution pump rod (320) in a penetrating mode, the exhaust valve (330) closes the air hole (321);

when the air distribution pump (300) is used for exhausting air, the air distribution pump rod (320) moves towards the direction far away from the air outlet (312), the exhaust valve (330) is opened, and outside air enters the second space (314) after sequentially passing through the air inlet (311), the first space (313) and the air hole (321); when the gas distribution pump (300) exhausts, the gas distribution pump rod (320) moves towards the direction close to the gas outlet (312), the gas outlet (321) is closed by the gas exhaust valve (330), and the gas in the second space (314) flows out from the gas outlet (312).

8. The soap dispenser of claim 7, wherein: the side of week of distribution pump pole (320) is equipped with second recess (322), distribution pump (300) still include second sealing washer (340), second sealing washer (340) cover is established week side of distribution pump pole (320), second sealing washer (340) cover is established in second recess (322), week side of second sealing washer (340) is hugged closely the wall of the cavity of the distribution pump body (310).

9. The soap dispenser of claim 7, wherein: the power mechanism (400) is respectively connected with the pressure pump (200) and the air distribution pump (300), and the power mechanism (400) provides power for the pressure pump (200) and the air distribution pump (300) at the same time.

10. The soap dispenser of claim 9, wherein: the air distribution pump comprises a pressure pump rod (220), a first chute (222) and a second chute (323) which are arranged on the air distribution pump rod (320), wherein the power mechanism (400) comprises a motor (420), a gear transmission mechanism (430), a rotating shaft (440), a first rotating disc (450), a second rotating disc (460), a first sliding block (470) and a second sliding block (480), the motor (420) drives the rotating shaft (440) to rotate through the gear transmission mechanism (430), the first rotating disc (450) is arranged on the rotating shaft (440), the second rotating disc (460) is arranged on the rotating shaft (440), the first sliding block (470) is arranged on the first rotating disc (450), the first sliding block (470) revolves around the axis of the rotating shaft (440), the first sliding block (470) slides in the first chute (222), and the second sliding block (480) is arranged on the second rotating disc (460), the second sliding block (480) revolves around the axis of the rotating shaft (440), and the second sliding block (480) slides in the second sliding groove (323).

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