WO2020177210A1

WO2020177210A1 - Cleaning tool

Info

Publication number: WO2020177210A1
Application number: PCT/CN2019/085571
Authority: WO
Inventors: 高志坚; 舒泓宾; 刘建国; 王琳; 姜海军; 庞雨花; 赵海; 杨兰
Original assignee: 常州机电职业技术学院
Priority date: 2019-03-04
Filing date: 2019-05-05
Publication date: 2020-09-10
Also published as: CN109674409A

Abstract

A cleaning tool comprises: a broom and a dustpan suitable for use a set, and a dirt accommodating assembly and a washing assembly being provided on the dustpan. The dustpan comprises a base panel (1-1) and three side panels (1-2) connected to the base panel (1-1), and the base panel (1-1) and the three side panels (1-2) form an accommodating cavity for accommodating waste. The three side panels (1-2) form an enclosure with an opening for waste to enter or exit. The dirt accommodating assembly comprises a waste water cavity (2) located outside of the accommodating cavity and an water entry and exit opening for water to enter or exit, the water entry and exit opening being provided at a top end portion of the waste water cavity (2) away from the ground. The broom comprises a broom handle (19), an installation cavity (20) connected to the broom handle (19), and a broom head (21) connected to the installation cavity (20). An interior of the installation cavity (20) is provided with a water distributing tube (22) along a length direction of the installation cavity (20). The water distributing tube (22) is uniformly provided with multiple water distributing holes (22-1) at a side toward the broom head (21). The washing assembly comprises a clean water container (3) located outside of the accommodating cavity for storing clean water, a pump (5) provided outside of the clean water container (3) and in communication with an inner cavity of the clean water container (3), and a water supply tube (6) having one end communicated with the clean water container (3).

Description

Cleaning equipment

Technical field

The invention relates to the technical field of cleaning tools, in particular to a cleaning tool.

Background technique

Tools commonly used when cleaning houses include brooms. In the process of continuous use of the broom, the dirty broom head will reduce the cleaning effect. Therefore, in order to achieve a better cleaning effect, the broom head needs to be cleaned frequently during cleaning. Generally, the broom head should be cleaned with water to clean the broom. The purpose of dust accumulation.

The invention with the patent application number CN201810657320.2 discloses a water-saving and easy-to-wash broom that can clean the broom head with water. The invention includes a pipe handle with water-conducting and water-storing channels, a loose, porous and elastic sweeping block, and It includes a water pipe, a water distributor, a sleeve, a scraper, and a connecting plate; the water pipe has a water-conducting channel, and the water pipe is inserted into the lower port of the pipe handle and communicated with the pipe handle; the water distributor has a hollow The chambers are arrayed with water outlet holes, the water pipe is communicated with the water distributor and connected into a ⊥-shaped structure; the sweeping block wraps the water distributor; the sleeve is sleeved on the pipe handle and can run along the pipe The handle slides in the length direction; the scraper surrounds the outside of the sweeping block, the scraper is made of an elastic thin plate, the side shape of the scraper is ∩-shaped and the two scraping edges of the scraper are close to each other under the unstressed state , Enabling the two scraping edges to clamp the sweeping block; one end of the connecting plate is connected with the sleeve and the other end is connected with the scraper. The working principle of the invention is: when cleaning the broom, the clean water in the pipe handle enters the hollow chamber of the water distributor through the water pipe, and then enters the sweeping block through the water outlet of the water distributor. At the same time, the sleeve is moved along the pipe handle. Sliding back and forth in the length direction, the sleeve drives the scraper to move through the connecting plate, so that the scraping edge of the scraper scrapes the sweeping block back and forth, scraping the dirt on the surface of the sweeping block and squeezing out the moisture in the sweeping block. The squeezed out water can bring out the dirt in the mop block. Because the clean water for cleaning the sweeping mop is stored in the pipe handle of the invention, the weight of the invention is much heavier than ordinary brooms after being filled with clean water. Therefore, the disadvantage of this invention is that it is not as light and handy as ordinary brooms during cleaning, resulting in The problem of extreme inconvenience.

Summary of the invention

The purpose of the present invention is to provide a cleaning appliance to solve the technical problems of easy use and easy cleaning of the broom.

The cleaning appliance of the present invention is realized as follows:

A cleaning appliance, comprising: a broom and a dustpan shovel suitable for matching use, and a dirt receiving component and a washing component provided on the dustpan shovel;

The dustpan shovel includes a bottom plate and three side plates respectively connected with the bottom plate. The bottom plate and the three side plates jointly form a accommodating cavity for accommodating garbage; the three side plates enclose a space suitable for garbage In and out openings;

The dirt receiving assembly includes a sewage tank located outside the containing cavity, and a water inlet and outlet suitable for water in and out provided at the top end of the sewage tank away from the ground;

The broom includes a broom handle, an installation groove connected with the broom handle, and a broom head connected with the installation groove; the inside of the installation groove is provided with a water distribution pipe along the length direction of the installation groove. One end is a closed end, and the other end is an open end; the side of the water distribution pipe facing the broom head is evenly provided with a plurality of water distribution holes;

The flushing assembly includes a clean water tank for storing clean water located outside the accommodating cavity, a pump provided on the outside of the clean water tank and communicated with the inner cavity of the clean water tank, and a water supply pipe connected with the clean water tank at one end The other end of the water supply pipe is adapted to be connected to the open end of the water distribution pipe.

In a preferred embodiment of the present invention, the pump communicates with the clean water tank through an air pipe; and

A water tank cover is provided on the top of the clean water tank.

In a preferred embodiment of the present invention, the side end of the installation groove facing the broom head is provided with an insertion groove for installing the broom head;

The groove walls at both ends of the length direction of the installation groove are provided with fixing holes suitable for the passage of the water distribution pipe; and

The closed end of the water distribution pipe is provided with an external thread part suitable for threaded connection with a mounting nut;

The open end of the water distribution pipe is provided with a shoulder adapted to press against the fixing hole of the installation groove from the outside of the installation groove.

In a preferred embodiment of the present invention, the cleaning appliance further includes a lifting frame assembly;

The lifting frame assembly includes a connecting frame connected with the sewage tank, a guide sleeve provided at the end of the connecting frame away from the sewage tank, and a lifting rod passing through the guide sleeve;

The guide sleeve has a through hole penetrating in the direction of the sewage tank; the lifting rod is inserted into the through hole and is adapted to move up and down relative to the sewage tank along the through hole;

The connecting frame is provided with a clamping groove suitable for clamping the broom handle.

In a preferred embodiment of the present invention, a handle is fixedly connected to the upper end of the handle; and

The lifting rod is covered with a sleeve that can rotate around the lifting rod; the top of the sleeve is in contact with the bottom of the handle.

In an optional embodiment of the present invention, the pump is arranged beside the guide sleeve; the pump is a piston pump;

The upper end of the piston rod of the pump is provided with a pressure head; a pressure spring is provided between the pressure head and the cylinder of the pump, and the pressure spring is sleeved on the piston rod;

A dial button is fixedly connected to the upper part of the sleeve; a pressure plate suitable for pressing the indenter is fixedly connected to the lower part of the sleeve.

In an optional embodiment of the present invention, the pump is arranged close to the clean water tank, and the pump is arranged in the middle of the water supply pipe; the pump is a piston pump;

The piston rod of the pump is connected with a foot pedal.

In a preferred embodiment of the present invention, the cleaning appliance further includes a water squeezing component;

The water squeezing assembly includes an inverted U-shaped shift fork fixedly connected to the part of the lifting rod protruding below the guide sleeve, and a part that slides with the lifting rod downwardly out of the shift fork A pair of symmetrically arranged first and second squeezing components that are connected to each other and are adapted to squeeze the broom head from both sides of the broom head;

The shift fork includes a base fixedly connected with the lifting rod and a pair of legs connected with the base, and an accommodating section suitable for the insertion of the broom head is formed between the pair of legs.

In an optional embodiment of the present invention, the first extrusion assembly includes a first body capable of rotating about an axis perpendicular to the lifting rod, and a first body integrally connected with the first body and disposed away from the lifting rod. The first wing is arranged symmetrically; the first body and a pair of the first wing together form a П-shaped structure; the end of the pair of the first wing away from the first body is provided with a first Squeeze roller

The second extrusion assembly includes a second body capable of rotating about an axis perpendicular to the lifting rod, and a pair of symmetrically arranged second wings that are integrally connected with the second body and set away from the lifting rod; The second body and the pair of second wings together form a П-shaped structure; the ends of the pair of second wings facing away from the second body are provided with second squeezing rollers;

Protruding sliding posts are provided on the side ends of a pair of the legs facing the first wing and the second wing respectively; and the first wing and the second wing are correspondingly provided with the sliding A waist-shaped sliding hole fitted with a column; the sliding column is adapted to slide along the waist-shaped sliding hole;

The first body and the second body are hingedly connected by two first rotating shafts that are both perpendicular to the handle and arranged coaxially; and

A through hole for the lifting rod to pass through is provided at the joint where the first body and the second body are hinged and located between the opposite ends of the two first rotating shafts.

The first body and the second body are hingedly connected by a second shaft arranged perpendicular to the lifting rod; and

A through hole for the lifting rod to pass through is provided at the joint where the first body and the second body are hinged and in the middle of the joint;

The lower part of the lifting rod passing through the shift fork is transversely provided with a flat hole penetrating the lifting rod; the second rotating shaft passes through the flat hole; and the lengthwise inner diameter of the flat hole is larger than the outer diameter of the second rotating shaft path.

By adopting the above technical solution, the present invention has the following beneficial effects: the cleaning appliance of the present invention can wash the broom head clamped on the present invention through the flushing assembly provided to achieve the purpose of cleaning the broom head. The sewage tank and flushing components (including the clean water tank for holding clean water) for holding sewage are all set on the dustpan shovel. In this way, the overall weight of the broom will not increase, and the sewage tank and washing can be avoided. The component affects the normal use of the broom.

Furthermore, through the designed squeezing component, the water left by the flushed broom head can be squeezed to achieve the purpose of squeezing water, and the entire squeezing structure is not arranged on the broom, which will not cause the weight of the broom itself. Increase. Compared with a mop with a squeezing function in the prior art, the squeezing structure is arranged on the mop, which will increase the weight of the mop itself. Because in the cleaning process, the broom or mop needs to be manually dragged for cleaning, so reducing the weight of the broom or mop itself can reduce the labor expenditure of the person who uses the broom or mop, thereby improving the comfort during the cleaning process sense.

Description of the drawings

Figure 1 is a front view of the cleaning appliance of the present invention, showing the position of the first squeezing roller and the second squeezing roller when the lifting rod is lifted to the upper position;

Figure 2 is a left side view relative to Figure 1;

Figure 3 is a top view relative to Figure 1, showing the structure of the connecting frame and the clamping slot. For concise expression, the handle is not shown in the figure, and only the broom handle is drawn for the broom;

Figure 4 shows the structure of the broom matched with the cleaning appliance of the present invention;

FIG. 5 is a top view relative to FIG. 1, showing the structure of the squeezing component, which is a concise expression, and the connecting frame and broom are not shown in the figure;

Figure 6 is a front view of the cleaning appliance, showing a state where the first squeezing roller and the second squeezing roller are close to each other and squeeze the broom head when the lifting rod is pushed to the lower position;

Figure 7 is a partial enlarged view of Figure 1, showing the structure of the water squeezing component;

Figure 8 shows the structure in which the pump is arranged on the side of the guide sleeve, the sleeve is sleeved on the lifting rod, and the pump is connected to the sealed clean water tank through the air pipe. For concise expression, the broom and the water tank cover are not shown in the figure;

Figure 9 is a partial enlarged view of Figure 8, showing a structure in which when the handle is pushed, the handle pushes the sleeve and the pressure plate downward, and the pressure plate touches the pump head and drives the pump piston downward;

Figure 10 shows the structure of turning the toggle button in the horizontal direction, the sleeve and the pressure plate rotate around the lifting rod, so that the pressure plate is aligned with the pressure head of the pump below it. For concise expression, only the handle and sleeve are drawn in the figure. , Dial button, pressure plate, pump, pressure head;

Figure 11 shows the structure of the reverse dial button, the sleeve and the pressure plate rotate around the lifting rod, so that the pressure plate deviates from the pressure head of the pump below it, for concise expression, the figure only draws the handle, sleeve, dial Button, pressure plate, pump, pressure head.

Fig. 12 is a partial enlarged view of Fig. 2, showing a structure in which the first body of the first extrusion assembly and the second body of the second extrusion assembly are hingedly connected by two first shafts of coaxial lines. A hole is opened at the joint between the hinged body and the second body and located between the opposite ends of the two rotating shafts, and the lower end of the lifting rod passes through the hole;

Fig. 13 is a partial enlarged view of Fig. 5, showing a top view structure in which the first body of the first extrusion assembly and the second body of the second extrusion assembly are hingedly connected by a second rotating shaft, and the lower part of the handle is transversely A flat hole penetrating the lifting rod is provided, and the second rotating shaft passes through the flat hole;

Figure 14 is a sectional view taken along the line A-A in Figure 4;

Figure 15 is a side view of the insertion slot of the installation slot.

In the picture: bottom plate 1-1, side plate 1-2, sewage tank 2, clean water tank 3, water tank cover 3-1, connecting frame 4, clamping groove 4-1, pump 5, piston rod 5-1, water supply pipe 6 , Guide sleeve 7, handle 8, handle 9, foot board 10, base 11-1, leg 11-2, sliding column 12, first body 13-1, first wing 13-2, second Body 14-1, second wing 14-2, first shaft 15-1, second shaft 15-2, sliding hole 16, first squeeze roller 17, second squeeze roller 18, broom handle 19, installation Slot 20, insertion slot 20-1, broom head 21, water distribution pipe 22, water distribution hole 22-1, shoulder 22-2, air pipe 23, permanent magnet 24, first squeezing shaft 25-1, second Squeeze water shaft 25-2, scraper 26, sleeve 27, dial button 27-1, pressure plate 27-2, perforation 28, semi-circular slot 28-1, pressure head 29, pressure spring 30, flat hole 31, Install the nut 33.

detailed description

In order to make the content of the present invention easier to be understood clearly, the following further describes the present invention in detail based on specific embodiments in conjunction with the accompanying drawings.

Example 1:

Please refer to Figures 1 to 13, this embodiment provides a cleaning appliance, including: a cleaning appliance, including: a broom and dustpan shovel suitable for supporting use, dirt-receiving components provided on the dustpan shovel and Flush the components.

Please refer to Figure 1, the dustpan shovel includes a bottom plate 1-1 and three side plates 1-2 connected to the bottom plate 1-1, the bottom plate 1-1 and three side plates 1-2 are formed together for accommodating Garbage containing cavity; three side plates 1-2 enclose an opening suitable for garbage in and out.

Here, as an option, please refer to FIG. 6, a scraper 26 protruding from the side plate 1-2 is provided on the side of the side plate 1-2 facing the receiving cavity. The scraper 26 is arranged horizontally. When the broom head 21 is adhered with large-grained garbage, the scraping strip 26 can be used to scrape the garbage from the broom head 21, and the scraped garbage falls into the receiving cavity of the dustpan.

Please refer to Figures 1 and 3, the sewage receiving assembly includes a sewage tank 2 located outside the accommodating cavity, and a water inlet and outlet suitable for water in and out provided at the top end of the sewage tank 2 away from the ground.

Please refer to Figure 4, the broom includes a broom handle 19, an installation groove 20 connected to the broom handle 19, and a broom head 21 connected to the installation groove 20; the inside of the installation groove 20 is provided with a cloth along the length of the installation groove 20 The water pipe 22, one end of the water distribution pipe 22 is a closed end, and the other end is an open end; the side of the water distribution pipe 22 facing the broom head 21 is evenly provided with a plurality of water distribution holes 22-1. The broom head 21 here is made of an elastic, porous, and highly water-absorbing material (such as but not limited to a sponge material).

For the broom of this embodiment, it is also necessary to explain that, please refer to FIG. 4, in order to facilitate the flushing of the broom head 21 with clean water and the squeezing of water from the flushed broom head 21, the broom of this embodiment The connecting position of the handle 19 and the installation groove 20 is at 1/5 to 1/3 of the length of the installation groove 20, instead of being designed in the middle of the installation groove 20, the grip part of the broom handle 19 faces away from the length direction of the broom head 21 Bend in the direction of the middle (see Figure 2). The broom handle 19 of the prior art broom is mostly installed obliquely with respect to the broom head 21, and the grip part of the broom handle 19 deviates a lot from the middle part of the length direction of the broom head 21 for the purpose of obtaining a better hand feeling. The position of the grip portion of the broom handle 19 of this embodiment relative to the middle of the length direction of the broom head 21 is the same as that of the prior art broom, so the broom handle 19 and the broom handle 19 designed in this embodiment are relative to the broom head 21 The installation position will not affect the feel of the broom. Optionally, two installation holes for assembling the broom handle 19 can be designed on the installation slot 20, so that the broom can be assembled in different installation holes during the cleaning process and during the cleaning process to realize the corresponding switching operation.

Please refer to Figure 4, the side end of the installation groove 20 facing the broom head 21 is provided with an insertion groove 20-1 for installing the broom head 21 (see Figure 15); the groove walls at both ends of the installation groove 20 in the length direction are opened There are fixing holes suitable for the water distribution pipe 22 to pass through; and the closed end of the water distribution pipe 22 is provided with an external thread portion adapted to be threadedly connected with a mounting nut 33; the open end of the water distribution pipe 22 is provided with an The outer side abuts against the shoulder 22-2 of the fixing hole of the mounting groove 20.

Specifically, the broom handle 19 is detachably connected to the installation groove 20 by, for example, not limited to threaded connection; the broom handle 19 may also be fixed to the installation groove 20 with an adhesive.

Please refer to Figures 4, 14, and 15, the side end of the installation groove 20 facing the broom head 21 is provided with an insertion groove 20-1 for installing the broom head 21 (the optional broom head 21 here uses, for example, but not It is limited to interference insertion and connected to the insertion groove 20-1 of the installation groove 20. Because the material of the broom head 21 has a certain elasticity, it can be connected to the part where the broom head 21 and the installation groove 20 are connected. The squeezing deformation of the broom head 21 and the insertion groove 20-1 of the installation groove 20 are realized by interference insertion), and the groove walls at both ends of the length direction of the installation groove 20 are provided with fixing holes suitable for the water distribution pipe 22 to pass through. . Optionally, the direct water distribution pipe 22 can be fixedly connected to the installation groove 20 through the fixing hole of the installation groove 20, as long as the water distribution hole 22-1 of the water distribution pipe 22 faces the broom head 21. . Optionally, the position where the broom head 21 is inserted into the insertion groove 20-1 is provided with an installation hole for the water distribution pipe 22 to pass through along the length direction of the installation groove 20. At this time, the closed end of the water distribution pipe 22 It is provided with an external thread portion suitable for threaded connection with the mounting nut 33, and a shoulder 22-2 suitable for abutting the fixing hole of the mounting groove 20 from the outside of the mounting groove 20 is provided at the open end of the water distribution pipe 22, where The external threaded portion of the closed end of the 2 is adapted to protrude outside the installation groove 20, and after the water distribution pipe 22 is assembled relative to the installation groove 20, the shoulder 22-2 is also located outside the installation groove 20.

The method of installing the broom head 21 and the water distribution pipe 22 in the installation groove 20 adopted in this embodiment: Please refer to Figure 4, ① insert the upper part of the broom head 21 into the insertion groove 20-1 of the installation groove 20; ② The closed end of the water distribution pipe 22 passes through the fixing hole of the installation groove 20 and the installation hole in the broom head 21 along the length direction of the installation groove 20, and then passes through another fixing hole of the installation groove 20; ③Exit the installation groove 20 A mounting nut 33 is screwed on the external threaded part of the closed end of the water distribution pipe 22 outside the fixing hole. Relying on the mounting nut 33 and the shoulder 22-2 of the open end of the water distribution pipe 22, the two ends of the water distribution pipe 22 are fixedly connected to the installation groove 20, and the broom head 21 is firmly connected in the installation groove 20. Obviously, the broom of this embodiment has the advantage of facilitating replacement of the broom head 21 of the wearing part.

Please refer to Figures 1 and 8, the flushing assembly includes a clean water tank 3 for storing clean water located outside the accommodating cavity, a pump 5 provided on the outside of the clean water tank 3 and communicating with the inner cavity of the clean water tank 3, and one end connected with The water supply pipe 6 connected to the clean water tank 3; the other end of the water supply pipe 6 is adapted to be connected to the open end of the water distribution pipe 22 by snap connection. Specifically, in this embodiment, the clean water tank 3 is provided between the sewage tank 2 and the dustpan. For the pump 5 of this embodiment, it is optional to be electrically connected through a rechargeable storage battery arranged outside the clean water tank 3, and the rechargeable storage battery provides the pump 5 with electrical energy required for operation.

In summary, the functions of the water distribution pipe 22 of this embodiment are as follows: ① Make the clean water flowing into the water distribution pipe 22 enter the interior of the broom head 21 through the water distribution hole 22-1; ② Make the upper part of the broom head 21 firmly connected to the installation groove Within 20; ③ the water supply pipe 6 is inserted so that the broom functions as a positioning hole when the broom is installed on a cleaning appliance that can wash the broom. Here, the water supply pipe 6 may be made of hard plastic material to improve the docking of the water supply pipe 6 and the water distribution pipe 22, and the relative fixing effect of the broom head 21 is achieved through the synergy of the water distribution pipe 22 and the water supply pipe 6.

It should be noted that referring to Figures 2 and 4, the broom handle 19 in this embodiment is preferably connected to the side of the installation groove 20 near the closed end of the water distribution pipe 22, so that the broom handle 19 forms an opposite broom The part of the head 21 corresponding to the closed end of the water distribution pipe 22 is positioned and fixed, and the water supply pipe 6 forms the positioning and fixing of the part of the broom head 21 corresponding to the open end of the water distribution pipe 22, so that the overall broom head 21 follows the cloth The extension direction of the closed end and the open end of the water pipe 22 realizes the fixing of the two parts, which can effectively ensure the positioning and fixing effect of the broom head 21.

In an alternative embodiment, please refer to Figure 1. The pump 5 is arranged at the middle position of the water supply pipe 6, that is, the water supply pipe 6 is disconnected at the middle position, and the pump 5 is connected to the disconnected position to make The water supply pipe 6 connects the open ends of the clean water tank 3, the pump 5 and the water distribution pipe 22 in sequence; and the top of the clean water tank 3 is provided with a water tank cover 3-1, where the water tank cover 3-1 can be opened for easy access to the clean water tank 3 Water treatment can of course also be set as an open water tank cover 3-1. The pump 5 here is installed near the clean water tank 3, for example, the pump 5 is installed beside the clean water tank 3 or above and below the clean water tank 3, or the pump 5 is installed below the sewage tank 2. At this time, the pump 5 is a piston pump; the piston rod 5-1 of the pump 5 is connected with a pedal 10. Here, the foot pedal 10 can be optionally arranged below the sewage tank 2 and beside the pump 5. The power for the operation of the pump 5 is provided by repeatedly stepping on the foot pedal 10. The function of the pump 5 is to pump clean water so that the clean water in the clean water tank 3 is delivered by the pump 5 and flows through the water supply pipe 6 into the water distribution pipe 22, and then flows through the water distribution hole 22-1 of the water distribution pipe 22 into the broom head 21 , So as to realize the flushing of the broom head 21 from the inside to the outside.

Please refer to Figures 1, 2 and 3, the cleaning appliance of this embodiment also includes a lifting frame assembly; specifically, the lifting frame assembly includes a connecting frame 4 connected to the sewage tank 2, and the connecting frame 4 is far away from the sewage tank. 2 is provided with a guide sleeve 7 at the end of the guide sleeve 7 and a lifting rod 8 passing through the guide sleeve 7; the guide sleeve 7 has a through hole that penetrates toward the sink 2; the lifting rod 8 penetrates the through hole and is suitable for It moves up and down relative to the sewage tank 2 along the through hole; the connecting frame 4 is in the shape of an arch bridge, and the connecting frame 4 is provided with a clamping groove 4-1 suitable for clamping the broom handle 19. The upper part of the connecting frame 4 is fixedly connected with the guide sleeve 7, and the bottom of the connecting frame 4 is fixedly connected with the dirt receiving component. Specifically, the bottom of the connecting frame 4 is fixedly connected with the wall of the sewage tank 2. Among them, the upper end of the lifting rod 8 is fixedly connected with a handle 9; and the lifting rod 8 is covered with a sleeve 27 that can rotate around the lifting rod 8; the sleeve 27 is away from the top end of the dustpan and the end of the handle 9 facing the dustpan. Department contact. The lifting rod 8 passes through the guide sleeve 7 and can move up and down relative to the sewage tank 2 along the through hole of the guide sleeve under the restriction of the through hole of the guide sleeve 7. The function of the rack assembly of this embodiment is: ①As a rack, it assembles and connects the dirt receiving component, the flushing component, and the water squeezing component into a whole; ②makes the cleaning appliance described in this embodiment easy to carry; ③used for cleaning the broom Install the broom and fasten the broom handle 19.

Please refer to Figures 3 and 4, because the broom handle 19 is connected to the closed end of the installation groove 20 near the water distribution pipe 22, and the water supply pipe 6 forms the positioning and fixation of the broom head 21 corresponding to the open end of the water distribution pipe 22 Therefore, the clamping groove 4-1 that is assembled with the broom handle 19 to fix the broom handle 19 is preferably arranged on the side of the connecting frame 4 away from the water supply pipe 6, so that the clamping groove 4-1 and the water supply pipe 6 meet the requirements for the broom head. The overall fixing effect of 21 along the direction from the closed end of the water distribution pipe 22 to the open end. The clamping groove 4-1 here adopts, for example, but not limited to, a structure that is assembled with the broom handle 19 by means of external force extrusion, that is, during the assembly process, only the pressing force of the broom handle 19 relative to the clamping groove 4-1 is used. To enable the broom handle 19 to be inserted into the clamping groove 4-1 or pulled out from the clamping groove 4-1.

In order to squeeze the water of the cleaning broom on the broom head 21 and accelerate the loss of the water of the broom head 21, the cleaning appliance of this embodiment further includes a water squeezing component.

Please refer to Figure 1, Figure 6, Figure 7, the water squeezing component includes an inverted U-shaped structure fixedly connected to the part of the lifting rod 8 under the guide sleeve 7, and the lifting rod 8 downward through A pair of symmetrically arranged first squeezing components and second squeezing components that are slidably connected to the part of the shift fork and adapted to squeeze the broom head 21 from both sides of the broom head 21; the shift fork includes a handle 8 The fixed base 11-1 and the pair of legs 11-2 connected to the base 11-1 form an accommodating space suitable for the insertion of the broom head 21 between the pair of legs 11-2.

Please refer to Figures 2, 7, and 13, specifically, the first extrusion assembly includes a first body 13-1 that can rotate about an axis perpendicular to the handle 8 and is integrally connected to the first body 13-1 And a pair of symmetrically arranged first wings 13-2 set away from the lifting rod 8; the first body 13-1 and a pair of first wings 13-2 together form a Π-shaped structure; a pair of first wings 13- 2 A first squeezing roller 17 is provided at the end facing away from the first body 13-1.

Please refer to Figures 2, 7, and 13, the second extrusion assembly includes a second body 14-1 that can rotate about an axis perpendicular to the handle 8 and is integrally connected to the second body 14-1 and away from the lift. A pair of symmetrically arranged second wings 14-2 are provided on the rod 8; the second body 14-1 and a pair of second wings 14-2 together form a П-shaped structure; the pair of second wings 14-2 is away from the first A second squeezing roller 18 is provided at the end of the second body 14-1.

Please refer to Figures 2 and 7, a pair of legs 11-2 are provided with protruding sliding posts 12 on the side ends facing the first wing 13-2 and the second wing 14-2 respectively; and One wing 13-2 and the second wing 14-2 are provided with waist-shaped sliding holes 16 corresponding to the sliding posts 12; the sliding posts 12 are adapted to slide radially along the waist-shaped sliding holes 16. Here, the axis of the sliding post 12 and the axis of the through hole of the guide sleeve 7 perpendicularly cross. When the sliding column 12 slides radially along the waist-shaped sliding hole 16, the waist-shaped sliding hole 16 has an elongated structure with an inner diameter in the longitudinal direction being greater than the outer diameter of the sliding column 12, so that the sliding column 12 moves along the waist The sliding hole 16 has a certain sliding space when sliding on the inner diameter of the longitudinal direction.

Please refer to FIGS. 12 and 13, the first body 13-1 and the second body 14-1 are hingedly connected by two first rotating shafts 15-1 that are both perpendicular to the handle 8 and arranged coaxially. The first body 13-1 and the second body 14-1 can be relatively rotated; at the joint between the first body 13-1 and the second body 14-1 and at the opposite ends of the two first rotating shafts 15-1 A perforation 28 for the lifting rod 8 to pass through is provided between the parts. The axis of the perforation 28 is collinear with the axis of the through hole of the guide sleeve 7. The lower end of the lifting rod 8 passes through the perforation 28. The aperture of the perforation 28 is larger than the diameter of the lifting rod 8 by about 1 to 2 mm, so that the lifting rod 8 can be in the perforation 28 Move freely without restriction. What needs to be explained here is that the perforation 28 here is specifically opened on the first body 13-1 and the second body 14-1, and is located on the first body 13-1 and the second body 14-1. The two semicircular slots 28-1 in the middle of the seam are combined into a perforation 28 by the two semicircular slots 28-1.

Please refer to FIG. 12, the axes of the first squeezing roller 17 and the second squeezing roller 18 are parallel to the axis of the first rotating shaft 15-1, and the first squeezing roller 17 and the second squeezing roller 18 are relative to the dial The forks are arranged in mirror symmetry, and the first squeezing roller 17 and the second squeezing roller 18 are in contact with the two sides of the broom head 21 and can move on the two sides of the broom head 21 respectively.

Please refer to Figures 1 and 7, the first squeezing roller 17 is rotatably supported on the end of the first wing 13-2 through the first squeezing shaft 25-1; the second squeezing roller 18 is passed through the second squeezing The shaft 25-2 is rotatably supported at the end of the second wing 14-2. In this way, when the first squeeze roller 17 and the second squeeze roller 18 squeeze the dirty water in the broom head 21, the first squeeze roller 17 and the second squeeze roller 18 can be respectively on the two sides of the broom head 21 scroll. The first squeezing roller 17 and the second squeezing roller 18 here preferably adopt a cylindrical structure.

The specific implementation principle of the cleaning appliance of this embodiment is as follows:

Please refer to Figure 1, Figure 2, Figure 6, after installing the broom on the cleaning appliance described in this embodiment, first step on the pedal 10 repeatedly with your foot to provide power to the pump 5, so that the clean water flows from the clean water tank 3 through the pump 5. The water supply pipe 6, the water distribution pipe 22, and the water distribution hole 22-1 flow into the interior of the broom head 21, and flush the broom head 21 from the inside to the outside. Then, push the handle 9 hard, the handle 8 and the shift fork move down quickly, because the handle 8 can move unconstrained in the perforation 28, so the handle 8 will not directly push the first extrusion assembly and the second The second extrusion assembly moves down. The first extrusion assembly and the second extrusion assembly lag behind the shift fork downward movement due to inertia. This causes the sliding post 12 provided on the shift fork to move down between the first extrusion assembly and the second extrusion assembly. Slide in the sliding hole 16 on the second squeezing component, and push the first squeezing component and the second squeezing component to rotate counterclockwise and clockwise around the first shaft 15-1 respectively, so that the first squeezing roller 17 and The second squeezing rollers 18 approach each other and squeeze the broom head 21. At this time, the shift fork will also push the first squeeze component and the second squeeze component downward, and push the first squeeze roller 17 and the second squeeze roller 18 to move downwards, the first squeeze roller 17 and the second squeeze roller When the second squeezing roller 18 moves downwards relative to the broom head 21, it generates friction with the broom head 21, and the friction further causes the first squeezing component to rotate counterclockwise and the second squeezing component to rotate clockwise. The first squeezing roller 17 and the second squeezing roller 18 are further approached and squeeze the broom head 21, squeeze out the dirty water in the broom head 21, and take away the dirt on the surface of the broom head 21, the discharged dirty water and The dirt is collected in the sewage tank 2. Please refer to Figures 1 and 6, when the handle 9 is lifted upwards, the lever 8 and the shift fork move up, and the sliding posts 12 on the shift fork are in the sliding holes 16 on the first and second pressing components Slide and push the first squeezing component and the second squeezing component to rotate clockwise and counterclockwise around the first shaft 15-1 respectively, so that the first squeezing roller 17 and the second squeezing roller 18 are separated from each other and loosened The broom head 21 is turned on, and then the sliding post 12 on the shift fork drives the first squeezing assembly and the first squeezing roller 17 to move up, and at the same time drives the second squeezing assembly and the second squeezing roller 18 to move up. Push and pull the handle 9 times repeatedly to clean the broom head 21. Because clean water enters the inside of the broom head 21 from the water distribution hole 22-1 of the water distribution pipe 22, and then squeezes out from the inside to the outside, the cleaning appliance of this embodiment saves water when cleaning the broom; and because of the dirt inside the broom head 21 It is easily carried out by the water squeezed out from the inside to the outside, so the cleaning appliance of this embodiment has a good cleaning effect on the broom. In addition, the cleaning appliance of this embodiment can clean the broom in situ without having to go to the washing tank to clean the broom. Because the cleaned broom head 21 contains a certain amount of moisture, the broom can not only sweep away garbage with larger particles, but also absorb dust with smaller particles, and play the role of sweeping and mopping at the same time.

Example 2:

On the basis of the cleaning tool of embodiment 1, the cleaning tool provided in this embodiment is roughly the same in structure as the cleaning tool of embodiment 1. The difference lies in that, please refer to FIG. 2, FIG. 7, and FIG. 13, the cleaning tool of this embodiment The first extrusion assembly of the tool includes a first body 13-1 that can rotate about an axis perpendicular to the handle 8 and a pair of symmetrically arranged first bodies that are integrally connected with the first body 13-1 and set away from the handle 8. Wings 13-2; the first body 13-1 and a pair of first wings 13-2 together form a П-shaped structure; the end of the pair of first wings 13-2 away from the first body 13-1 is provided with a first A squeeze roller 17.

Please refer to Figures 2 and 7, a pair of legs 11-2 are provided with protruding sliding posts 12 on the side ends facing the first wing 13-2 and the second wing 14-2 respectively; and One wing 13-2 and the second wing 14-2 are provided with waist-shaped sliding holes 16 corresponding to the sliding posts 12; the sliding posts 12 are adapted to slide radially along the waist-shaped sliding holes 16.

Please refer to Fig. 13, the first body 13-1 and the second body 14-1 are hingedly connected by a second shaft 15-2 arranged perpendicular to the handle 8; The lower part of the rod 8 passing through the shift fork is horizontally provided with a flat hole 31 penetrating the handle 8; the second rotating shaft 15-2 passes through the flat hole 31; and the longitudinal inner diameter of the flat hole 31 is larger than that of the second rotating shaft 15-2 The outer diameter allows the second rotating shaft 15-2 to move along the length direction of the flat hole 31. It should be noted here that, in order to facilitate the lifting rod 8 in this embodiment to pass through the first body 13-1 and the second body 14-1, so that the flat hole 31 on the lifting rod 8 extends beyond the first body 13-1. The bottom of the body 13-1 and the second body 14-1 allows the second shaft 15-2 to pass through the flat hole 31. This embodiment is also at the joint where the first body 13-1 and the second body 14-1 are hinged. In addition, a perforation 28 for the lifting rod 8 to pass through is provided in the middle of the joint. Optionally, the perforation 28 in this embodiment has the same specific structure as the perforation 28 in the first embodiment.

The function of the flat hole 31 provided at the lower part of the lifting rod 8 is: the flat hole 31 of the lifting rod 8 can give the second rotating shaft 15-2 a better positioning in the horizontal direction perpendicular to the second rotating shaft 15-2, so that the first The squeezing component and the second squeezing component have better symmetry during movement, and the first squeezing roller 17 and the second squeezing roller 18 have better mirror symmetry during the movement.

Example 3:

On the basis of the cleaning tool of embodiment 1 or 2, the cleaning tool provided in this embodiment has the same general structure as the cleaning tool of embodiment 1 or 2, except that the pump 5 of the cleaning tool of this embodiment Located beside the guide sleeve 7, a water tank cover 3-1 is provided on the top of the clean water tank 3 to make the clean water tank 3 a sealed container, and the pump 5 is connected to the sealed clean water tank 3 through the air pipe 23. The pump 5 uses a piston pump; the pump 5 pumps air into the clean water tank 3 through the air pipe 23, which causes the air pressure in the clean water tank 3 to rise, and the clean water is forced out of the clean water tank 3, and the clean water flows through the water supply pipe 6 into the water distribution pipe 22 , And then flow through the water distribution hole 22-1 of the water distribution pipe 22 into the broom head 21.

The upper end of the piston rod 5-1 of the pump 5 is provided with a pressure head 29; a pressure spring 30 is provided between the pressure head 29 and the cylinder of the pump 5 and the pressure spring 30 is sleeved on the piston rod 5-1; in the sleeve 27 A dial button 27-1 is fixedly connected to the upper part of the sleeve; a pressure plate 27-2 suitable for pressing the indenter 29 is fixedly connected to the lower part of the sleeve 27. Toggle the dial button 27-1 in the horizontal direction, the sleeve 27 and the pressing plate 27-2 can rotate around the lifting rod 8. Here, the handle 9 can be operated with one hand to rinse and squeeze the broom head 21; and, by flipping the dial button 27-1 with your fingers, the switch between flushing and not flushing the broom head 21 can be completed. , This conversion can be carried out while squeezing the water, that is, in the process of repeatedly pushing the lifting handle 9.

When it is necessary to rinse and squeeze the broom head 21, hold the handle 9 with your hand and use your fingers to move the knob 27-1 in the horizontal direction, so that the pressure plate 27-2 is aligned with the pressure head 29 of the pump 5 below it. (Please refer to Figure 10). Please refer to Figure 8 and Figure 9. Push the handle 9 hard. In addition to pushing the water squeezing assembly to squeeze the sewage from the broom head 21, the handle 9 also pushes the sleeve 27 and the pressure plate 27 -2 moves down, the pressure plate 27-2 hits the pressure head 29 and drives the piston of the pump 5 to move down, so that the pump 5 is exhausted. The gas discharged from the pump 5 is introduced into the clean water tank 3 through the air pipe 23, and the clean water tank 3 When the air pressure rises, the clean water is forced out of the clean water tank 3, the clean water flows through the water supply pipe 6 into the water distribution pipe 22, and then flows through the water distribution hole 22-1 of the water distribution pipe 22 into the broom head 21. Please refer to Figure 8 and Figure 9, lift the handle 9, the sleeve 27 and the pressure plate 27-2 move up with the handle 9, the pressure plate 27-2 leaves the pressure head 29 of the pump 5, and the pressure head 29 is at the pressure spring 30 The elastic force moves upwards and drives the piston rod 5-1 and the piston upwards, so that the pump 5 sucks air from the outside. When you only need to squeeze water on the broom head 21, hold the handle 9 with your hand and flip the dial 27-1 with your fingers to make the pressure plate 27-2 deviate from the pressure head 29 of the pump 5 below it (see Figure 11 ), please refer to Figure 8 and Figure 9. Push the handle 9 hard, and the handle 9 pushes the water squeezing assembly through the handle 8 to squeeze the sewage from the broom head 21; the handle 9 also pushes the sleeve 27 and the pressure plate 27-2 down However, the pressure plate 27-2 will not touch the pressure head 29 and will not drive the piston of the pump 5 down, and the pump 5 will not exhaust.

In an alternative embodiment, a permanent magnet 24 is provided on the base 11-1 of the shift fork, and the first rotating shaft 15-1 or the second rotating shaft 15-2 between the first extrusion assembly and the second extrusion assembly adopts The permanent magnet 24 is made of a material (such as steel) that can be attracted by the permanent magnet 24. The permanent magnet 24 here adopts, for example, but not limited to, an annular structure to be arranged on the base 11-1 and surround the circumferential outer side of the lifting rod 8, thereby making the permanent The magnet 24 can produce a good magnetic attraction effect on the two first rotating shafts 15-1 or the second rotating shaft 15-2 respectively located on both sides of the lifting rod 8. The function and beneficial effects of setting the permanent magnet 24 on the shift fork are as follows: Please refer to Figures 6 and 7, when the handle 9 is pushed hard, the lift rod 8, the shift fork and the permanent magnet 24 move down quickly together, and the permanent magnet 24 Quickly approach the tops of the first and second extrusion components and attract the first shaft 15-1 or the second shaft 15-2. The magnetic attraction force prevents the first and second extrusion components from moving towards Make a free fall movement downwards to ensure that the first squeezing assembly and the second squeezing assembly lag behind the shift fork to move down, so that the first squeezing roller 17 and the second squeezing roller 18 are close to each other and the action of squeezing the broom head 21 is done To be more reliable and in place.

The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in further detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the invention shall be included in the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying what is meant. The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In the present invention, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated position or position relationship is based on the position or position relationship shown in the drawings, or the position or position relationship usually placed when the product of the invention is used. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and other terms do not mean that the component is required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, “horizontal” only means that its direction is more horizontal than “vertical”, it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the present invention, unless otherwise clearly defined and defined, the first feature above or below the second feature may include the first and second features in direct contact, or may include the first and second features not in direct contact but It is through the other characteristic contact between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature. The first feature below, below, and below the second feature includes the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Claims

A cleaning appliance, which is characterized by comprising: a broom and a dustpan shovel suitable for supporting use, and a dirt receiving component and a washing component provided on the dustpan shovel;

The dustpan shovel includes a bottom plate and three side plates respectively connected with the bottom plate. The bottom plate and the three side plates jointly form a accommodating cavity for accommodating garbage; the three side plates enclose a space suitable for garbage In and out openings;

The dirt receiving assembly includes a sewage tank located outside the containing cavity, and a water inlet and outlet suitable for water in and out provided at the top end of the sewage tank away from the ground;

The broom includes a broom handle, an installation groove connected with the broom handle, and a broom head connected with the installation groove; the inside of the installation groove is provided with a water distribution pipe along the length direction of the installation groove. One end is a closed end, and the other end is an open end; the side of the water distribution pipe facing the broom head is evenly provided with a plurality of water distribution holes;

The flushing assembly includes a clean water tank for storing clean water located outside the accommodating cavity, a pump provided on the outside of the clean water tank and communicated with the inner cavity of the clean water tank, and a water supply pipe connected with the clean water tank at one end The other end of the water supply pipe is adapted to be connected to the open end of the water distribution pipe.
The cleaning appliance according to claim 1, wherein the side end of the installation groove facing the broom head is provided with an insertion groove for installing the broom head;

The groove walls at both ends of the length direction of the installation groove are provided with fixing holes suitable for the passage of the water distribution pipe; and

The closed end of the water distribution pipe is provided with an external thread part suitable for threaded connection with a mounting nut;

The open end of the water distribution pipe is provided with a shoulder adapted to press against the fixing hole of the installation groove from the outside of the installation groove.
The cleaning appliance according to claim 1, wherein the pump is in communication with the clean water tank through an air pipe; and

A water tank cover is provided on the top of the clean water tank.
The cleaning appliance according to claim 3, wherein the cleaning appliance further comprises a lifting frame assembly;

The lifting frame assembly includes a connecting frame connected with the sewage tank, a guide sleeve provided at the end of the connecting frame away from the sewage tank, and a lifting rod passing through the guide sleeve;

The guide sleeve has a through hole penetrating in the direction of the sewage tank; the lifting rod is inserted into the through hole and is adapted to move up and down relative to the sewage tank along the through hole;

The connecting frame is provided with a clamping groove suitable for clamping the broom handle.
The cleaning appliance of claim 4, wherein a handle is fixedly connected to the upper end of the handle; and

The lifting rod is covered with a sleeve that can rotate around the lifting rod; the top of the sleeve is in contact with the bottom of the handle.
The cleaning appliance according to claim 5, wherein the pump is arranged beside the guide sleeve; the pump is a piston pump;

The upper end of the piston rod of the pump is provided with a pressure head; a pressure spring is provided between the pressure head and the cylinder of the pump, and the pressure spring is sleeved on the piston rod;

A dial button is fixedly connected to the upper part of the sleeve; a pressure plate suitable for pressing the indenter is fixedly connected to the lower part of the sleeve.
The cleaning appliance according to any one of claims 1 or 2, wherein the pump is arranged close to the clean water tank, and the pump is arranged in the middle of the water supply pipe; the pump is a piston pump;

The piston rod of the pump is connected with a foot pedal.
The cleaning appliance according to claim 4, wherein the cleaning appliance further comprises a water squeezing component;

The water squeezing assembly includes an inverted U-shaped shift fork fixedly connected to the part of the lifting rod protruding below the guide sleeve, and a part that slides with the lifting rod downwardly out of the shift fork A pair of symmetrically arranged first and second squeezing components that are connected to each other and are adapted to squeeze the broom head from both sides of the broom head;

The shift fork includes a base fixedly connected with the lifting rod and a pair of legs connected with the base, and an accommodating section suitable for the insertion of the broom head is formed between the pair of legs.
The cleaning appliance according to claim 8, wherein the first squeezing assembly includes a first body that can rotate about an axis perpendicular to the lifting rod, and is integrally connected with the first body and facing away from the lifting A pair of symmetrically arranged first wings arranged on a rod; the first body and a pair of the first wings together form a Π-shaped structure; the ends of the pair of first wings facing away from the first body Equipped with the first squeezing roller;

The second extrusion assembly includes a second body capable of rotating about an axis perpendicular to the lifting rod, and a pair of symmetrically arranged second wings that are integrally connected with the second body and set away from the lifting rod; The second body and the pair of second wings together form a П-shaped structure; the ends of the pair of second wings facing away from the second body are provided with second squeezing rollers;

Protruding sliding posts are provided on the side ends of a pair of the legs facing the first wing and the second wing respectively; and the first wing and the second wing are correspondingly provided with the sliding A waist-shaped sliding hole fitted with a column; the sliding column is adapted to slide along the waist-shaped sliding hole;

The first body and the second body are hingedly connected by two first rotating shafts that are both perpendicular to the handle and arranged coaxially; and

A through hole for the lifting rod to pass through is provided at the joint where the first body and the second body are hinged and located between the opposite ends of the two first rotating shafts.
The cleaning appliance according to claim 8, wherein the first squeezing assembly includes a first body that can rotate about an axis perpendicular to the lifting rod, and is integrally connected with the first body and facing away from the lifting A pair of symmetrically arranged first wings arranged on a rod; the first body and a pair of the first wings together form a Π-shaped structure; the ends of the pair of first wings facing away from the first body Equipped with the first squeezing roller;

The second extrusion assembly includes a second body capable of rotating about an axis perpendicular to the lifting rod, and a pair of symmetrically arranged second wings that are integrally connected with the second body and set away from the lifting rod; The second body and the pair of second wings together form a П-shaped structure; the ends of the pair of second wings facing away from the second body are provided with second squeezing rollers;

Protruding sliding posts are provided on the side ends of a pair of the legs facing the first wing and the second wing respectively; and the first wing and the second wing are correspondingly provided with the sliding A waist-shaped sliding hole fitted with a column; the sliding column is adapted to slide along the waist-shaped sliding hole;

The first body and the second body are hingedly connected by a second shaft arranged perpendicular to the lifting rod; and

A through hole for the lifting rod to pass through is provided at the joint where the first body and the second body are hinged and in the middle of the joint;

The lower part of the lifting rod passing through the shift fork is transversely provided with a flat hole penetrating the lifting rod; the second rotating shaft passes through the flat hole; and the lengthwise inner diameter of the flat hole is larger than the outer diameter of the second rotating shaft path.