CN110733777A

CN110733777A - multifunctional automatic dustbin

Info

Publication number: CN110733777A
Application number: CN201911141766.0A
Authority: CN
Inventors: 江燕; 童富勇
Original assignee: Hangzhou Normal University
Current assignee: Hangzhou Normal University
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-01-31

Abstract

The invention discloses an multifunctional automatic dustbin, which comprises an outer box, an inner cylinder and a ceiling fixed on the upper part of the outer box through an upright post, wherein the inner wall of the outer box is provided with a photoelectric sensing device above the inner cylinder, the upper surface of the ceiling is provided with a solar cell panel electrically connected with a photoelectric sensing device, the photoelectric sensing device comprises a photoelectric sensing emitter, a photoelectric sensing receiver, a control panel, a driving mechanism and two horizontal sliding devices , the control panel is respectively and electrically connected with the photoelectric sensing emitter, the photoelectric sensing receiver and the driving mechanism, and is used for controlling the driving mechanism to open the horizontal sliding device when the photoelectric sensing receiver does not receive an optical signal emitted by the photoelectric sensing emitter and controlling the driving mechanism to delay to close the horizontal sliding device when the photoelectric sensing receiver receives the optical signal emitted by the photoelectric sensing emitter.

Description

multifunctional automatic dustbin

Technical Field

The invention belongs to the technical field of garbage cans, and particularly relates to multifunctional automatic garbage cans.

Background

At present, the municipal garbage can on our street is generally an inner box type garbage can and an outer box type garbage can with an open garbage opening and a pure structure, and the garbage can has no electrified design and has no automation.

Chinese patent document for CN208249038U discloses solid-liquid separation formula municipal refuse collection box, including casing, base and case , the bottom welding of casing has the base, the positive right side coupling of casing has case , the notch has all been seted up on the left and right sides top of casing, the slide has all been welded to the inner chamber bottom left and right sides of casing, the slider has been cup jointed to the outer wall of slide, the top welding of slider has the square bucket, and the slider is located the bottom left and right sides of square bucket, the front of square bucket is embedded to have the transparent plate, the positive bottom screw connection of square bucket has the U-shaped handle, the inner chamber top screw connection of square bucket has the rectangle concave plate, equal screw connection in both sides has the trapezoidal plate around the bottom of rectangle concave plate, the bottom and the bottom plate body shaping of trapezoidal plate.

With the development of society, future technologies can be more and more integrated into all aspects of our lives, so that the innovative application of the trash can also develop towards the direction of intellectualization and automation.

The function of the open trash can and various other trash disposals are less convenient due to the open-type and function-sheet arrangement, the open-type trash can emit and smell bad in hot summer days, but trash cans with pure structure and flip-type structure are troublesome, especially for pedestrians holding piles of trash in hands, and throwing the trash is troublesome.

Traditional dustbin also has the bilayer structure design of shell body and inner tube, but the inner tube is troublesome and dirty things down in many cases, and is consuming time hard simultaneously, and the sanitation workman of not being convenient for collects the rubbish of garbage bin, and the operating efficiency is low.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides multifunctional automatic garbage bins, which can be automatically opened and closed, and prevent peculiar smell of a garbage bin from being emitted to pollute the street environment.

The technical scheme of the invention is as follows:

multifunctional automatic garbage can comprises an outer box, an inner barrel and a ceiling fixed on the upper part of the outer box through a stand column, wherein the inner wall of the outer box is provided with a photoelectric induction device above the inner barrel, and the upper surface of the ceiling is provided with a solar cell panel electrically connected with the photoelectric induction device;

the photoelectric sensing device comprises a photoelectric sensing emitter, a photoelectric sensing receiver, a control panel, a driving mechanism and two horizontal sliding , wherein the photoelectric sensing emitter and the photoelectric sensing receiver are oppositely arranged on two upright posts;

the control panel is respectively electrically connected with the photoelectric sensing emitter, the photoelectric sensing receiver and the driving mechanism, and is used for controlling the driving mechanism to open the horizontal sliding when the photoelectric sensing receiver does not receive the optical signal emitted by the photoelectric sensing emitter, and controlling the driving mechanism to delay and close the horizontal sliding when the photoelectric sensing receiver receives the optical signal emitted by the photoelectric sensing emitter again.

Meanwhile, compared with flip-type garbage cans, the inductive automatic sliding design realizes the automatic opening and closing of the garbage can, the garbage can be thrown without flip-type garbage cans, and the peculiar smell of the garbage can is prevented from being emitted.

Two pulley guide rails are symmetrically arranged on the inner wall of the outer box, sliding shafts are symmetrically and fixedly arranged on two side portions of the horizontal sliding , and sliding wheels matched with the pulley guide rails are arranged at two ends of each sliding shaft.

The driving mechanism comprises a driving mechanism box body, and a direct current motor and a double-end lead screw which are arranged in the driving mechanism box body, wherein the driving mechanism box body is fixed on the inner wall of the outer box below the pulley guide rail, two ends of the double-end lead screw are fixed with the driving mechanism box body through deep groove ball bearings, and threads with opposite rotation directions are processed at two ends of the double-end lead screw;

the input end of the direct current motor is electrically connected with the control panel, the output end of the direct current motor is in matched transmission through a gear, and the double-head screw is driven to rotate through the rotation of the motor.

The invention can realize that the dustbin can automatically open and close the garbage port, ensure that the peculiar smell of the dustbin can not be emitted, and simultaneously can automatically induce the garbage to be thrown in without manually pushing , a photoelectric sensor is adopted as a signal detection element, signals are collected by the photoelectric sensor and a controller to control the garbage port sliding mechanism of the dustbin to operate, wherein a driving element of a sliding mechanism is a direct current motor, a transmission mechanism consists of a gear and a double-head lead screw, the gear can increase and reduce the speed, the double-head lead screw realizes the rotation motion to be converted into the linear motion, meanwhile, the garbage port adopts double-water-level sliding , so the space can be saved, the automation can be conveniently realized, two horizontal sliding adopt double-head lead screws with opposite screw thread turning directions as a transmission center, the lead screw nut mechanisms at two ends of the lead screw are symmetrically distributed, and are respectively connected with a nut sliding block, so that the required functions can be realized, a roller supporting mechanism is adopted for the sliding of the sliding , the friction can be reduced, and simultaneously ensure that the repeated circulating work.

The inner cylinder be the back taper structure, the bottom of inner cylinder is equipped with the filter screen, the outer container is equipped with waste liquid collection box in the position just right with the filter screen, this structure makes the inner cylinder can separate the waste liquid in some rubbish, avoids the waste liquid overstock bucket bottom, and the filter screen structure at the bucket bottom can be convenient for the inner cylinder and wash simultaneously.

In order to enable the inner barrel to be more convenient to clean, the taper of the inner barrel close to the bottom position is larger than that of the middle position, and waste liquid in garbage is effectively separated on the basis of ensuring large capacity.

And the lower part of the ceiling is provided with an LED lamp electrically connected with the solar cell panel, the LED lamp adopts a light-operated switch, and the LED lamp is turned on when the ambient brightness is lower than a set value. Through adding the LED lamp, can throw away rubbish for the pedestrian at night and provide the illumination to and collect rubbish operation for sanitationman night and facilitate.

The back of outer container adopts the structure of opening in pairs, and the symmetry is equipped with the conveying mechanism support frame on two relative lateral walls in the outer container, the conveying mechanism support frame on the slip be fixed with inner tube supporting slide, inner tube supporting slide on be equipped with the notch, the top edge of inner tube is equipped with the curved knot that matches with the notch.

Inner tube support slider be close to outer container inner wall side and be equipped with the spur rack, the inner wall of outer container is in the top or the below of spur rack are equipped with step motor, step motor's output shaft passes through gear and spur rack meshing, step motor with the control panel electricity be connected.

In order to realize automatic conveying of the inner barrel of the dustbin out of the dustbin and in the dustbin, the dustbin is driven by double motors, gear and rack transmission is adopted, rotary motion is converted into linear motion, a sliding block can be pushed to move, the sliding block is matched with a supporting frame through a dovetail groove structure, the degree of freedom of the sliding block can be effectively restrained, and the sliding block can still stably move linearly when bearing. The whole mechanism is provided with two groups, the two groups are symmetrically arranged on the side wall of the dustbin, the inner barrel of the dustbin is stably supported, and the inner barrel of the dustbin is matched with the sliding block through the bent buckle and the groove, so that the inner barrel of the dustbin is very convenient to take out. When the transport-out button is pressed, the motor driving mechanism can be controlled to drive the inner barrel of the dustbin to come out, the garbage is cleaned, and the transport-back button is pressed to control the mechanism to drag the inner barrel to return to the original position.

Above-mentioned setting can make the sanitation workman very light take out the dustbin inner tube, compares dustbin convenience more before, can alleviate the work load that sanitation workman cleared up rubbish, improves work efficiency.

The supporting frame of the conveying mechanism is matched and connected with the inner cylinder supporting sliding block through a dovetail groove structure, so that the freedom degree of the sliding block can be limited, and meanwhile, linear motion can be realized.

In the conveying mechanism, the inner barrel of the garbage can is matched with the top notch of the inner barrel supporting slide block through the bent buckle, and the inner barrel is pushed to enter and exit the garbage can body through the movement of the inner barrel supporting slide block.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the solar panel is arranged on the ceiling, so that solar energy can be effectively utilized, and energy is saved; by arranging the LED lamp, illumination can be provided for pedestrians to throw away garbage at night, and convenience is provided for sanitation workers to collect garbage at night;

2. according to the invention, by arranging the photoelectric sensing device, whether the garbage is thrown in the garbage opening or not can be automatically detected, and then the garbage opening is controlled to be closed or opened, so that compared with an open garbage can, peculiar smell of the garbage can be prevented from being emitted, the street environment is polluted, compared with flip-type garbage cans, the inductive automatic sliding design can throw the garbage without flip-open, and the garbage can is practical and convenient;

3. according to the garbage can, the stepping motor and the conveying mechanism supporting frame are arranged on the inner wall of the outer box, the inner barrel supporting sliding block is fixed on the conveying mechanism supporting frame in a sliding mode, and the straight rack is arranged on the side, close to the side of the inner wall of the outer box, of the inner barrel supporting sliding block, so that sanitation workers can easily take out the inner barrel of the garbage can;

4. according to the garbage can, the inner barrel is designed to be inverted cone-shaped, and the filter screen is arranged at the bottom of the inner barrel, so that waste liquid in garbage can be separated by the inner barrel, the waste liquid can be prevented from accumulating the bottom of the can, and meanwhile, the inner barrel can be conveniently washed due to the net-shaped structure of the can bottom.

Drawings

FIG. 1 is a side sectional view of kinds of multifunctional automated trash can of the present invention;

FIG. 2 is a front cross-sectional view of kinds of multi-functional automated trash bins of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of the upper cover plate and horizontal slide on the upper end of the inner cartridge of the present invention;

FIG. 5 is a schematic view of the driving mechanism for driving the horizontal sliding switch according to the present invention;

fig. 6 is a control flow chart of kinds of multifunctional automatic garbage cans.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples, which are intended to facilitate an understanding of the invention and are not intended to be limiting in any way.

As shown in figures 1-4, kinds of multifunctional automatic garbage cans comprise an outer box 1, an inner cylinder 3 and a ceiling fixed on the upper part of the outer box 1 through upright posts 9, wherein the ceiling is matched and connected with round holes on the outer box 1 through upright posts 9 at four corners and can play a role of preventing rain and sunshine, a solar cell panel 11 is arranged on the upper surface of the ceiling, the solar cell panels 11 are symmetrically arranged on two inclined planes of the ceiling and can absorb sunlight and generate electricity and store energy, an LED lamp 10 is arranged on a cross beam on the lower surface of the ceiling and can provide illumination at night, a garbage can 12 with a split structure is arranged on the back surface of the can body 1, an upper cover plate 20 is arranged on the inner wall of the outer box 1 at the upper end of the inner cylinder 3, and a garbage input.

The inner cylinder 3 adopts the design of small taper in the middle and large taper in the bottom, and the bottom is provided with a filter screen structure, so that liquid of garbage can be effectively filtered out of the inner cylinder 3, the problem that the bottom of the garbage can be inconvenient to clean and unpleasant in odor due to the fact that waste liquid is pushed for a long time can be avoided, the inner cylinder 3 can be convenient to clean at the same time by adopting the design, the inner cylinder is hung on an inner cylinder hanging mechanism, the waste liquid collecting box 2 is installed in a waste liquid box groove formed in an outer box and can be taken out through a handle arranged on the waste liquid collecting box 2, the garbage box 12 with a split structure is arranged on the back of the outer box 1, the two are symmetrically installed on the back of the outer box and connected with the outer box 1 through a buckle structure, an environmental sanitation worker can open through the handle arranged on , the upper cover plate 20 is connected with the outer box 1 through screws, the upper part of the box.

The invention relates to a photoelectric sensing device, which comprises a photoelectric sensing emitter 18, a photoelectric sensing receiver 19, a control panel, a driving mechanism 4 and two horizontal sliding 8, wherein the photoelectric sensing emitter 18 and the photoelectric sensing receiver 19 are arranged on two upright posts 9 in a right-to-right mode, whether garbage is thrown in can be sensed, the horizontal sliding 8 is controlled to be opened in time, the driving mechanism 4 is arranged on the inner wall of an outer box, and the output end of the driving mechanism is connected with the horizontal sliding .

The control board is electrically connected to the photo sensor transmitter 18, the photo sensor receiver 19 and the driving mechanism 4, and is configured to control the driving mechanism 4 to open the horizontal sliding motion 8 when the photo sensor receiver 19 does not receive the light signal emitted by the photo sensor transmitter 18, and to control the driving mechanism to delay to close the horizontal sliding motion 8 when the photo sensor receiver 19 receives the light signal emitted by the photo sensor transmitter 18.

As shown in fig. 1, two pulley guide rails 5 are symmetrically arranged on the inner wall of the outer box 1, two side portions of the horizontal sliding component 8 are symmetrically and fixedly provided with sliding shafts 7, two ends of each sliding shaft 7 are provided with sliding wheels 6 matched with the pulley guide rails 5, in order to ensure that the horizontal sliding component 8 can stably slide on the pulley guide rails 5, in this embodiment, four sliding shafts 7 and eight sliding wheels 6 are arranged below each horizontal sliding component 8, so that the two horizontal sliding components 8 can stably move in the opposite direction and in the opposite direction.

As shown in fig. 5, a specific structural schematic diagram of the driving mechanism 4 includes a driving mechanism box 41, and a dc motor 42 and a double-headed lead screw 46 which are arranged in the driving mechanism box 41, the driving mechanism box 41 is fixed on the inner wall of the outer box 1 below pulley guide rails 5, two ends of the double-headed lead screw 46 are fixed with the driving mechanism box 41 through deep groove ball bearings 45, and threads with opposite rotation directions are arranged at positions close to the two ends, nut sliders 47 are symmetrically installed on the threads at two ends of the double-headed lead screw 46, the upper ends of the nut sliders 47 are respectively fixed with the bottoms of two horizontal sliding 8, the input end of the dc motor 42 is electrically connected with a control board, the output end of the dc motor is fixed with a pinion 43, a large gear 44 is fixed at a end of the double-headed lead screw 46, and the.

More specifically, the DC motor 42 is matched with a motor base of the driving mechanism box 41, the DC motor is fixed by screws, the pinion 43 is connected with a motor shaft of the DC motor 42, the bearing hole is circumferentially positioned by a common flat key, and the bearing hole is axially positioned by a shaft shoulder, the gearwheel 44 is connected to the double-head lead screw 46, the bearing hole is circumferentially positioned by the common flat key, two deep groove ball bearings 45 are symmetrically arranged on bearing hole positions of the driving mechanism box 41, the double-head lead screw 46 is stably supported by the shaft shoulder of the double-head lead screw 46, so that the motor can efficiently drive the double-head lead screw 46 to rotate, the nut sliders 47 are symmetrically arranged on threads at two ends of the double-head lead screw 46, the nut sliders 47 are matched by threads, the upper parts of the nut sliders 47 are matched with notches of a driving mechanism box cover 48 to ensure that the nut sliders 47 can stably slide in the horizontal direction, wherein the two nut sliders 47 are symmetrically arranged at two ends of the double-head lead screw 46, the nut sliders 47 can synchronously face to and depart from each other through different screwing directions of the threads, the nut sliders 47 are fixed with the horizontal sliding block 358 through screws, so that the horizontal sliding of the driving mechanism can synchronously move along with the nut sliders 47, the driving mechanism box cover 48, the driving mechanism can be fixed on the outer box body, and the driving mechanism.

As shown in figures 2 and 3, the invention also designs an inner cylinder conveying mechanism, which comprises two conveying mechanism supporting frames 13, two inner cylinder supporting sliding blocks 14, two straight racks 15, two M1 gears 16, two stepping motors 17 and other parts, wherein the conveying mechanism supporting frames 13 are fixed at the installation position of the outer box 1 through screws, the two sliding blocks are symmetrically distributed on two symmetrical surfaces of the dustbin to sufficiently support the weight of a fully loaded inner cylinder 3, the inner cylinder supporting sliding blocks 14 are assembled on the conveying mechanism supporting frames 13 and are connected through a dovetail groove structure, so that the inner cylinder supporting sliding blocks 14 can be ensured to stably slide on the conveying mechanism supporting frames 13, and simultaneously, a constraint effect can be achieved, so that the inner cylinder supporting sliding blocks 14 can stably move linearly, the straight racks 15 are installed in grooves of the inner cylinder supporting sliding blocks 14 and are fixed through small screws, the inner cylinder supporting sliding blocks 15 are ensured not to loosen under the action of stress, the M1 gears 16 are installed on output shafts of the stepping motors 17, the inner cylinder supporting sliding blocks are fixed through fastening nuts, the stepping motors 17 are vertically placed and fixed on the outer box 1, the inner cylinder supporting sliding mechanism 17 is capable of automatically conveying the inner cylinder supporting sliding blocks, the inner cylinder supporting sliding blocks 14, the inner cylinder supporting sliding blocks can be conveniently, the inner cylinder supporting mechanism supporting sliding along with the inner cylinder supporting sliding grooves, the inner cylinder supporting blocks 14, the inner cylinder supporting mechanism supporting sliding grooves, the inner cylinder supporting sliding mechanism supporting sliding grooves, the inner cylinder supporting sliding blocks can be lifted automatically, the inner cylinder supporting blocks can be lifted out, the inner cylinder supporting sliding grooves, the inner cylinder supporting mechanism supporting blocks can be lifted out, the inner cylinder supporting mechanism supporting inner cylinder supporting blocks, the inner cylinder supporting blocks can be lifted out, the inner cylinder supporting mechanism supporting blocks can be lifted out, the inner cylinder supporting.

As shown in fig. 6, the multifunctional automatic garbage can of the present invention controls the process in use, wherein the straight line represents the power supply, the arrow represents the signal transmission, ① and ② represent two different signal controls, ① represents the slide mechanism control, and ② represents the transport mechanism control.

The specific application can be divided into the following steps:

, assembling the multifunctional automatic garbage can according to the design instruction;

the second step is that: the solar cell panel 11 can store energy through the irradiation of sunlight and can be used for electric elements of the multifunctional automatic dustbin;

thirdly, the pedestrian throws the garbage, the light signal emitted by the photoelectric sensing emitter 18 is blocked by the garbage, the photoelectric sensing receiver 19 does not receive the light signal, control signals are generated, the direct current motor 42 is controlled to rotate forwards, then the two horizontal sliding 8 are driven to move away through the driving component, and the garbage opening of the garbage can is opened;

fourthly, the pedestrian throws the garbage into the inner barrel 3, waits for periods of time to ensure that the pedestrian can completely throw the garbage in the hand, then controls the direct current motor 42 to reversely rotate under the delay control function, realizes the opposite movement of the horizontal sliding 8 through the driving component, ensures that the two horizontal sliding 8 can be completely jointed, and stops the movement of the direct current motor 42;

, cleaning urban garbage by a sanitation worker at night, turning on the LED lamp 10, opening the garbage can 12 by the sanitation worker, pressing a button, starting the garbage can conveying mechanism, controlling the conveying mechanism to move through the stepping motor 17, conveying the inner barrel 3 to leave the garbage can body, lifting the handle of the inner barrel 3 by the sanitation worker, dumping the garbage in the garbage can into a centralized garbage truck, and putting the inner barrel 3 back into the groove of the inner barrel supporting slide block 14 after washing;

and sixthly, opening the garbage can conveying mechanism, reversely installing the garbage can by the stepping motor 17, conveying the inner barrel 3 back to the garbage can, closing the garbage can 12, drawing the waste liquid collecting box 2 from the bottom of the garbage can, dumping the waste liquid in the waste liquid collecting box, flushing the waste liquid and then returning the waste liquid to the garbage can.

The embodiments described above are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions and equivalents made within the scope of the principles of the present invention should be included in the scope of the present invention.

Claims

The multifunctional automatic garbage can comprises an outer box, an inner barrel and a ceiling fixed to the upper portion of the outer box through an upright column, and is characterized in that a photoelectric sensing device is arranged on the inner wall of the outer box above the inner barrel, and a solar cell panel electrically connected with a photoelectric sensing device is mounted on the upper surface of the ceiling;

the photoelectric sensing device comprises a photoelectric sensing emitter, a photoelectric sensing receiver, a control panel, a driving mechanism and two horizontal sliding , wherein the photoelectric sensing emitter and the photoelectric sensing receiver are oppositely arranged on two upright posts;

the control panel is respectively electrically connected with the photoelectric sensing emitter, the photoelectric sensing receiver and the driving mechanism, and is used for controlling the driving mechanism to open the horizontal sliding when the photoelectric sensing receiver does not receive the optical signal emitted by the photoelectric sensing emitter, and controlling the driving mechanism to delay and close the horizontal sliding when the photoelectric sensing receiver receives the optical signal emitted by the photoelectric sensing emitter again.
2. The multifunctional automatic garbage can of claim 1, wherein two pulley guide rails are symmetrically arranged on the inner wall of the outer box, sliding shafts are symmetrically and fixedly arranged on two side portions of the horizontal sliding , and sliding wheels matched with the pulley guide rails are arranged at two ends of each sliding shaft.
3. The multifunctional automatic garbage can according to claim 2, wherein the driving mechanism comprises a driving mechanism box body, and a direct current motor and a double-head screw rod which are arranged in the driving mechanism box body, the driving mechanism box body is fixed on the inner wall of the outer box below the pulley guide rail, two ends of the double-head screw rod are fixed with the driving mechanism box body through deep groove ball bearings, and threads with opposite rotation directions are processed at two ends of the screw rod;

the input end of the direct current motor is electrically connected with the control panel, the output end of the direct current motor is in matched transmission through a gear, and the lead screw is driven to rotate through the rotation of the motor.
4. The multifunctional automatic garbage can according to claim 1, wherein the inner cylinder is of an inverted cone structure, the bottom of the inner cylinder is provided with a filter screen, and the outer box is provided with a waste liquid collecting box at a position opposite to the filter screen.
5. The multifunctional automated trash bin of claim 4, wherein the taper of the inner drum is greater near the bottom than at the middle.
6. The multifunctional automatic garbage can according to claim 1, wherein an LED lamp electrically connected with a solar cell panel is arranged at the lower part of the ceiling, and the LED lamp is switched on by a photoswitch when the ambient brightness is lower than a set value.
7. The multifunctional automated trash can of claim 1, wherein the back of the outer box is provided with a trash can with a split structure, two opposite side walls of the outer box are symmetrically provided with a conveying mechanism supporting frame, the conveying mechanism supporting frame is slidably provided with an inner cylinder supporting slide block, the top of the inner cylinder supporting slide block is provided with a notch, and the upper edge of the inner cylinder is provided with a bent buckle matched with the notch.
8. The multifunctional automatic garbage can according to claim 7, wherein the inner barrel supporting slide block is provided with a spur rack on the side close to the inner wall of the outer box, the inner wall of the outer box is provided with a stepping motor above or below the spur rack, an output shaft of the stepping motor is meshed with the spur rack through a gear, and the stepping motor is electrically connected with the control board.
9. The multifunctional automated trash bin of claim 7, wherein the conveyor support frame is cooperatively connected with the inner barrel support slider in a dovetail groove structure.
10. The multifunctional automated trash can of claim 7, wherein the inner cylinder is engaged with the top notch of the inner cylinder support slider by a curved buckle, and the inner cylinder is pushed into and out of the trash can body by the movement of the inner cylinder support slider.