Automatic cover turning mechanism for garbage can cover

Abstract

The utility model relates to an automatic garbage can cover turning mechanism which comprises a support, a stand column is arranged on the support, a mounting cavity is formed in the stand column, an electric push rod is hinged in the mounting cavity, a mechanical arm is hinged to the output end of the electric push rod, a shaft hole is formed in the mechanical arm, a shaft sleeve is arranged in the shaft hole in a penetrating mode, and a driving shaft is arranged in the shaft sleeve in a penetrating mode. The driving shaft can roll in the shaft sleeve, the two ends of the driving shaft penetrate out of the mounting cavity and are connected with the garbage can cover through a connecting frame, a buffering groove is formed in the circumferential side wall of the shaft sleeve in the circumferential direction, and a positioning piece is connected to the outer wall of the driving shaft, extends to the outside through the buffering groove and can swing along the buffering groove along with rotation of the driving shaft. According to the technical scheme, by arranging the buffering structure, the power element is effectively prevented from being damaged when garbage overflows, and meanwhile the garbage can cover can still be opened in a manual mode when the power element breaks down or is in a power-off state.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage weighing equipment, and more specifically, to an automatic cover flipping mechanism for a trash can lid. Background Art

[0002] The opening and closing structures of traditional outdoor trash can lids include two types: directly manually controlling the opening and closing of the lid and foot-operated opening and closing. Among them, for the manual opening and closing structure, the garbage thrower needs to control the trash can lid with one hand and the garbage with the other hand during the garbage throwing process. The whole throwing process is quite laborious, seriously restricting the convenience of garbage throwing. The foot-operated opening and closing structure restricts the thrower's legs and feet. Especially when carrying heavy garbage by hand, the body is difficult to get stable support. And for some special groups, such as the elderly or people with limited mobility, it may be difficult to use the foot-operated opening and closing structure.

[0003] The automatic cover flipping mechanism for a trash can is an automated device developed to solve the drawbacks of the above-mentioned manual opening and closing structure and foot-operated opening and closing structure. It automatically opens and closes the trash can lid through a control device, facilitating the garbage throwing activity, and can avoid the spread of odors and prevent the garbage from being blown away, improving the sanitation of the trash can and the surrounding environment. However, most of the existing automatic cover flipping mechanisms have the problems that the power components have no self-protection function and the trash can lid cannot be opened in case of a malfunction or power failure. Here, as shown in a Chinese patent with the publication number CN214113726U and the patent name "An Automatic Cover Flipping and Deodorizing Device for a Trash Can", the automatic cover flipping device for the trash can lid recorded therein uses a hydraulic cylinder as the power source. When someone needs to throw garbage, the distance sensor senses the approaching garbage thrower, so that the PLC controller controls the hydraulic cylinder to contract, and then the connecting block and the connecting shell move, enabling the closed cover covering the trash can to be directly opened.

[0004] When the garbage in the trash can is too much and overflows outside the bucket mouth in the automatic cover flipping mechanism of the above structure, the trash can lid cannot normally close with the lower trash can, and it will be subjected to the top thrust exerted by the overflowing garbage. The top thrust acts on the hydraulic components in the contracted state through the trash can lid. Under the long-term action of the top thrust, the hydraulic components are easily damaged. At the same time, when the hydraulic components have their own malfunctions or power failures, the hydraulic components cannot complete the telescoping under the control of the PLC controller, resulting in the trash can lid being locked. At this time, it is difficult for the garbage thrower to manually open the trash can lid, so it will hinder the garbage throwing activity. Summary of the Utility Model

[0005] In view of the above situation, to overcome the problems in the existing automatic trash can lid flipping mechanism that the power element has no self - protection function and is easily damaged when the trash overflows, and the trash can lid is often locked and cannot be opened normally in case of failure or power outage, the purpose of the present utility model is to provide an automatic trash can lid flipping mechanism that can effectively protect the power element from being damaged when the trash overflows by setting a buffer structure, and can still open the trash can lid manually when the power element fails or is in a power - off state.

[0006] To achieve the above purpose, the technical solution of the present utility model is as follows:

[0007] An automatic trash can lid flipping mechanism, which includes a bracket. There is a column on the bracket, and an installation cavity is opened in the column. An electric push rod is hinged in the installation cavity. The output end of the electric push rod is hinged with a robotic arm. There is a shaft hole in the robotic arm, and a bushing is passed through the shaft hole. A driving shaft is passed through the bushing. The driving shaft can roll in the bushing. Both ends of the driving shaft penetrate outside the installation cavity and are connected with the trash can lid through a connecting frame. A buffer groove is opened along the circumferential direction on the circumferential side wall of the bushing. A positioning member is connected to the outer wall of the driving shaft. The positioning member extends to the outside through the buffer groove and can swing along the buffer groove as the driving shaft rotates.

[0008] Preferably, a sliding seat is also provided in the installation cavity. The sliding seat is slidably connected with the inner wall of the installation cavity. The electric push rod is arranged on the sliding seat. The installation cavity communicates with the side of the column close to the trash can lid. A sliding cover is slidably connected to the side of the column close to the trash can lid. The installation cavity is closed by the sliding cover. The sliding cover can slide along the direction of the column. The driving shaft penetrates the sliding cover and is connected with the connecting frame.

[0009] Preferably, a chute is opened on the side wall of the sliding seat, and a positioning hole opposite to the chute is opened on the inner wall of the installation cavity. A first threaded adjusting member is threadedly connected in the positioning hole, and the head of the first threaded adjusting member abuts against the part of the sliding seat on the periphery of the chute.

[0010] Preferably, the number of chutes is at least two, and each chute is distributed on two opposite side walls of the sliding seat.

[0011] Preferably, a partition is provided in the sliding seat. A rotating seat is provided on the partition. The electric push rod is hinged with the rotating seat. The partition is connected with the sliding seat through a second threaded adjusting member that penetrates the sliding seat from bottom to top.

[0012] Preferably, the connecting frame has a connecting seat and two spaced and opposite connecting arms. A guiding groove is opened along the length direction of the connecting arm. Both ends of the driving shaft are inserted into the guiding groove and are connected with the connecting arm. The connecting seat is formed on one side of the two connecting arms and is connected with the trash can lid.

[0013] Preferably, the vertical projection surface shape of the matching position of the driving shaft and the guiding groove is non - circular.

[0014] Preferably, there are at least two buffer grooves.

[0015] Preferably, the number of robotic arms is two, and the two robotic arms are mirror - distributed on both sides of the output end of the electric push rod.

[0016] Preferably, a sealing cover is embedded in the installation cavity, and it is closed through the sealing cover.

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] In the automatic cover - flipping mechanism of the present utility model, by providing buffer grooves on the shaft sleeve and arranging positioning members extending outside the buffer grooves on the driving shaft that can roll relative to it inside, when the garbage in the trash can is in a full - overflow state, under the top - pushing force of the full - overflowing garbage, the positioning members indirectly connected to the trash - can lid by the connecting frame and the driving shaft can slide a certain distance along the buffer grooves of the shaft sleeve, causing the trash - can lid to lift itself, avoiding the top - pushing force of the full - overflowing garbage from being transmitted to the electric push rod, and thus effectively protecting the electric push rod. At the same time, under the action of the buffer grooves, even if the electric push rod itself fails or loses power, the garbage thrower can manually control the trash - can lid and apply a lifting action. After the positioning member slides a certain distance in the buffer, the opening of the trash - can lid is completed. Furthermore, it provides two ways for the garbage thrower: automatic opening and closing of the trash - can lid when the electric push rod is operating normally and there is power supply, and manual opening and closing when there is a failure or power outage, ensuring that the garbage - throwing activity can always proceed normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the automatic cover - flipping mechanism of the present utility model;

[0020] Figure 2 is the overall structural schematic diagram of the automatic cover - flipping mechanism of the present utility model from another perspective;

[0021] Figure 3 is the exploded structural schematic diagram of the column of the automatic cover - flipping mechanism of the present utility model;

[0022] Figure 4 is the structural schematic diagram of the automatic cover - flipping mechanism of the present utility model when the sealing cover of the column is removed;

[0023] Figure 5 is the present utility model Figure 4 magnified structural schematic diagram of part A;

[0024] Figure 6 is the structural schematic diagram of the position change of the electric push rod, etc. when the trash - can lid controlled by the automatic cover - flipping mechanism of the present utility model is in the closed state;

[0025] Figure 7When the trash can lid controlled by the automatic flip mechanism of the present utility model is in the open state, and when the trash can lid controlled by the automatic flip mechanism of the present utility model is in the closed state.

[0026] As shown in the figure:

[0027] 1. Bracket; 2. Column; 201. Installation cavity; 201a. Positioning hole; 3. Electric push rod; 4. Robot arm; 401. Shaft hole; 5. Sleeve; 501. Buffer groove; 6. Drive shaft; 7. Trash can lid; 8. Positioning part; 9. Slide seat; 901. Slide groove; 10. Slide cover; 11. First thread adjusting part; 12. Partition; 13. Rotating seat; 14. Second thread adjusting part; 15. Connecting seat; 16. Connecting arm; 1601. Guide groove; 17. Sealing cover. Specific embodiments

[0028] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of simplified description, rather than indicating or implying that this orientation is a specific orientation that must be had, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] Such as Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7As shown in the figure, the utility model relates to an automatic flip cover mechanism for a trash can lid, which includes a bracket 1. A column 2 is provided on the bracket 1. During actual installation, the bracket 1 is used to be connected to a weighing scale and integrated with the weighing scale. An installation cavity 201 is opened in the column 2. An electric push rod 3 is hinged inside the installation cavity 201. The output end of the electric push rod 3 is hinged with a robotic arm 4. A shaft hole 401 is opened in the robotic arm 4, and a shaft sleeve 5 is penetrated through the shaft hole 401. Overall, the hinged electric push rod 3 and the connecting arm 16 together form a linkage structure. When the output end of the electric push rod 3 expands and contracts, it drives the connecting arm 16 to swing, and the connecting arm 16 drives the shaft sleeve 5 to move synchronously. At the same time, the electric push rod 3 will also rotate accordingly according to the expansion and contraction length of its output end. A driving shaft 6 is penetrated through the shaft sleeve 5. The driving shaft 6 can roll in the shaft sleeve 5. Both ends of the driving shaft 6 penetrate outside the installation cavity 201 and are connected to the trash can lid 7 through a connecting frame. A buffer groove 501 is opened on the circumferential side wall of the shaft sleeve 5 along the circumferential direction. The overall length of the buffer groove 501 is less than the circumference of the shaft sleeve 5. A positioning member 8 is connected to the outer wall of the driving shaft 6. The positioning member 8 extends to the outside through the buffer groove 501 and can thus swing along the buffer groove 501 as the driving shaft 6 rotates. It can be understood that the swing angle of the positioning member 8 is equal to the central angle opposite to the buffer groove 501. When the positioning member 8 swings to abut against both ends of the buffer groove 501, it is supported by being blocked and limited by the inner wall of the buffer groove 501. The automatic flip cover mechanism of the utility model opens the buffer groove 501 on the shaft sleeve 5 and sets a positioning member 8 extending outside the buffer groove 501 on the driving shaft 6 that can roll relative to it inside. When the garbage in the trash can is in an overflow state, under the top thrust of the overflowing garbage, the positioning member 8 indirectly connected to the trash can lid 7 by the connecting frame and the driving shaft 6 can slide a certain distance along the buffer groove 501 of the shaft sleeve 5, causing the trash can lid 7 to lift itself, avoiding the top thrust of the overflowing garbage from being transmitted to the electric push rod 3, thereby effectively protecting the electric push rod 3. At the same time, under the action of the buffer groove 501, even if the electric push rod 3 itself fails or loses power, the garbage dropper can manually control the trash can lid 7 and then apply a lifting action, so that the positioning member 8 slides a certain distance in the buffer, and the opening of the trash can lid 7 is completed. Furthermore, two methods are provided for the trash can lid 7 to automatically open and close when the electric push rod 3 can operate normally and there is power supply, and to manually open and close in case of failure or power outage, ensuring that the garbage dropping activity can always proceed normally.

[0031] As Figure 4 and Figure 5As shown in the figure, a sliding seat 9 is further provided in the installation cavity 201. The sliding seat 9 is slidably connected to the inner wall of the installation cavity 201 and can reciprocate up and down along the direction of the installation cavity 201. The electric push rod 3 is arranged on the sliding seat 9. The installation cavity 201 communicates with the side of the column 2 close to the trash can lid 7. A sliding cover 10 is slidably connected to the side of the column 2 close to the trash can lid 7. The installation cavity 201 is closed by the sliding cover 10. The sliding cover 10 can reciprocate up and down along the direction of the column 2. The driving shaft 6 passes through the sliding cover 10 and is connected to the connecting frame. When the height of the sliding seat 9 changes, the electric push rod 3 drives the connecting arm 16, the sleeve 5 and the internal driving shaft 6 to change in height accordingly. At the same time, the driving shaft 6 passing through the sliding cover 10 drives the sliding cover 10 to slide synchronously along the direction of the column 2, realizing the adjustment of the height of the trash can lid 7, so that the automatic flip mechanism of the present utility model can meet the opening and closing of trash can openings with different heights.

[0032] As Figure 4 and Figure 5 shown, a chute 901 is formed on the side wall of the sliding seat 9, and a positioning hole 201a opposite to the chute 901 is formed on the inner wall of the installation cavity 201. A first threaded adjusting member 11 is threadedly connected in the positioning hole 201a. The head of the first threaded adjusting member 11 abuts against the part of the sliding seat 9 on the periphery of the chute 901. Based on the above settings, the heights of the sliding seat 9 and the sliding cover 10 can be realized by simply rotating the first threaded adjusting member 11. When the head of the first threaded adjusting member 11 is separated from the part of the sliding seat 9 on the periphery of the chute 901, the sliding seat 9 can be controlled to move. When the sliding seat 9 moves, the sliding cover 10 can also move synchronously. When in a tightly abutting state, the sliding seat 9 is tightly pressed against the inner wall of the installation cavity 201 by the pressure of the head of the first threaded adjusting member 11, fixing the sliding seat 9 and the sliding cover 10 at the required height.

[0033] Further, the number of the chutes 901 is at least two, and the corresponding first threaded adjusting members 11 are equal in number to the sliding seat 9. Each chute 901 is distributed on two opposite side walls of the sliding seat 9. Based on the above settings, the two sides of the sliding seat 9 can be kept balanced, ensuring smooth movement in the installation cavity 201.

[0034] As Figure 4 shown, a partition 12 is provided in the sliding seat 9. The partition 12 divides the space in the sliding seat 9 into upper and lower parts. A rotating seat 13 is provided on the side of the partition 12 close to the upper space. The electric push rod 3 is hinged to the rotating seat 13. The partition 12 is connected to the sliding seat 9 through a second threaded adjusting member 14 that passes through the sliding seat 9 from bottom to top. It can be understood that the second threaded adjusting member 14 is located in the lower space of the partition 12. The second threaded adjusting member 14 can change the length in the lower space of the partition 12 by rotation, changing the height of the partition 12 and the connected electric push rod 3, realizing fine adjustment of the height position of the electric push rod 3.

[0035] AsFigure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown in Figure 6 and Figure 7 , the connecting frame has a connecting seat 15 and two spaced and opposite connecting arms 16. A guiding groove 1601 is formed along the length direction of the connecting arm 16. Both ends of the driving shaft 6 are inserted into the guiding groove 1601 to be connected with the connecting arm 16. The connecting seat 15 is formed on one side of the two connecting arms 16 and is connected to the trash can lid 7. The driving shaft 6 applies force to the inner wall of the guiding groove 1601 by its own rotation, so that the connecting arm 16 and the connecting seat 15 rotate synchronously, and further the trash can lid 7 connected to the connecting seat 15 completes the opening and closing actions following the rotation of the driving shaft 6.

[0036] Furthermore, the vertical projection surface of the matching position of the driving shaft 6 and the guiding groove 1601 is non-circular. Based on the above setting, it is ensured that the connecting frame can rotate synchronously with the driving shaft 6 when the driving shaft 6 rotates, avoiding the problem that the trash can lid 7 cannot be opened and closed normally due to relative rotation.

[0037] Furthermore, there are at least two buffer grooves 501. In the present utility model, the two buffer grooves 501 are mirror-symmetrically distributed on the shaft sleeves 5 on both sides of the output end of the electric push rod 3. The increase in the number of buffer grooves 501 also increases the number of positioning members 8, and further increases the supporting points between the driving shaft 6 and the inner wall of the end of the buffer groove 501 through the positioning members 8, realizing stable support.

[0038] Furthermore, the number of the robotic arms 4 is two, and the two robotic arms 4 are mirror-symmetrically distributed on both sides of the output end of the electric push rod 3. Similarly, in the present utility model, the connection points of the shaft sleeves 5 are increased by increasing the number of the robotic arms 4. Under the two-point supporting action of the two robotic arms 4, the deflection of the shaft sleeve 5 and the connected driving shaft 6 is avoided.

[0039] As Figure 2 and Figure 3 shown, a sealing cover 17 is embedded in the installation cavity 201, and it is closed by the sealing cover 17. Under the sealing action of the sealing cover 17, external dirt, rain, snow or other impurities can be prevented from entering the installation cavity 201, and thus good protection is provided for components such as the electric push rod 3, the connecting arm 16, the shaft sleeve 5, the driving shaft 6, the positioning member 8 and the sliding seat 9 arranged therein.

[0040] Combined with Figures 1 to 7, when the output end of the electric push rod 3 extends outwards or retracts, the automatic flip mechanism of the present utility model drives one side of the connecting arm 16 connected thereto to lift or swing downwards, and the other side of the connecting arm 16 moves in the opposite direction, driving the sleeve 5 to rotate. When the sleeve 5 rotates, the height of the buffer groove 501 on its peripheral side wall changes. The driving shaft 6 that can roll in the sleeve 5 rolls under the gravity of the trash can lid 7, and the positioning member 8 connected thereto rotates synchronously until it abuts against the inner wall of the buffer groove 501 of the sleeve 5. When the height of the buffer groove 501 increases, the inner wall at its lower end pushes the positioning member 8 to swing upwards, and the positioning member 8 drives the driving shaft 6 to rotate to lower the trash can lid 7. Correspondingly, when the height of the buffer groove 501 decreases, the inner wall at the upper end presses down the positioning member 8 to rotate the driving shaft 6, causing the trash can lid 7 to automatically swing upwards and open. If the trash can lid 7 is subjected to the top thrust of overflowing garbage, the connecting frame, the driving shaft 6, and the positioning member 8 indirectly connected to the trash can lid 7 can slide a certain distance along the buffer groove 501 of the sleeve 5, causing the trash can lid 7 to lift itself, avoiding the top thrust of overflowing garbage from being transmitted to the electric push rod 3, thereby protecting the electric push rod 3. And even if the electric push rod 3 fails or loses power itself, the garbage thrower can manually control the trash can lid 7 and apply an upward lifting action, so that after the positioning member 8 slides a certain distance in the buffer, the opening of the trash can lid 7 is completed. When the height of the trash can is different, the first threaded adjustment member 11 connected to the slide seat 9 in the installation cavity 201 can be rotated. When the head of the first threaded adjustment member 11 is partially disengaged from the slide seat 9 on the periphery of the chute 901, the movement of the slide seat 9 can be controlled. When the slide seat 9 moves, the slide cover 10 can also move synchronously to achieve the adjustment of the height of the trash can lid 7. When in a tightly abutting state, the slide seat 9 is tightly pressed against the inner wall of the installation cavity 201 by the pressure of the head of the first threaded adjustment member 11, fixing the slide seat 9 and the slide cover 10 at the required height. Moreover, the height of the partition plate 12 can be adjusted by rotating the second threaded adjustment member 14 connected to the slide seat 9 and the inner partition plate 12 thereof, thereby adjusting the height position of the electric push rod 3 and finally realizing the fine adjustment of the height of the trash can lid 7.

[0041] The above embodiments and descriptions in the specification only illustrate the principle and the best embodiments of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An automatic lid-opening mechanism for a trash can, comprising a bracket (1), a column (2) being provided on the bracket (1), a mounting cavity (201) being provided in the column (2), and characterized in that: An electric push rod (3) is hinged in the installation cavity (201), and a mechanical arm (4) is hinged at the output end of the electric push rod (3). An axial hole (401) is provided on the mechanical arm (4), and a shaft sleeve (5) is passed through the shaft hole (401). A drive shaft (6) is passed through the shaft sleeve (5), and the drive shaft (6) can roll in the shaft sleeve (5). Both ends of the drive shaft (6) pass through the outside of the installation cavity (201) and are connected to the trash can cover (7) through a connecting frame. A buffer groove (501) is provided on the peripheral side wall of the shaft sleeve (5) along the circumferential direction. A positioning member (8) is connected to the outer wall of the drive shaft (6), and the positioning member (8) extends to the outside through the buffer groove (501) and can swing along the buffer groove (501) as the drive shaft (6) rotates.

2. The automatic lid flipping mechanism for a trash can according to claim 1, characterized in that: A sliding seat (9) is also provided in the installation cavity (201), and the sliding seat (9) is slidably connected to the inner wall of the installation cavity (201). The electric push rod (3) is provided on the sliding seat (9). The installation cavity (201) is connected to a side of the column (2) close to the trash can cover (7). A sliding cover (10) is slidably connected to a side of the column (2) close to the trash can cover (7). The installation cavity (201) is closed by the sliding cover (10), and the sliding cover (10) can slide along the direction of the column (2). The drive shaft (6) passes through the sliding cover (10) and is connected to the connecting frame.

3. The automatic lid flipping mechanism for a trash can according to claim 2 is characterized in that: A sliding groove (901) is provided on the side wall of the sliding seat (9), and a positioning hole (201a) opposite to the sliding groove (901) is provided on the inner wall of the installation cavity (201). A first threaded adjustment member (11) is threadedly connected in the positioning hole (201a), and the head of the first threaded adjustment member (11) abuts against the portion of the sliding seat (9) on the peripheral side of the sliding groove (901).

4. The automatic lid flipping mechanism for a trash can according to claim 3 is characterized in that: The number of the slide grooves (901) is at least two, and each of the slide grooves (901) is distributed on two opposite side walls of the slide seat (9).

5. The automatic lid flipping mechanism for a trash can according to claim 2, characterized in that: The slide seat (9) is provided with a partition (12), a rotating seat (13) is provided on the partition (12), the electric push rod (3) is hinged to the rotating seat (13), and the partition (12) is connected to the slide seat (9) through a second threaded adjustment member (14) that penetrates the slide seat (9) from bottom to top.

6. The automatic lid flipping mechanism for a trash can according to claim 1, characterized in that: The connecting frame comprises a connecting seat (15) and two spaced and opposite connecting arms (16); the connecting arm (16) is provided with a guide groove (1601) along its length direction; the two ends of the driving shaft (6) are inserted into the guide groove (1601) and connected to the connecting arm (16); the connecting seat (15) is formed on one side of the two connecting arms (16) and is connected to the trash can cover (7).

7. The automatic lid flipping mechanism for a trash can according to claim 6, characterized in that: The vertical projection surface of the matching position of the driving shaft (6) and the guide groove (1601) is non-circular.

8. The automatic lid flipping mechanism for a trash can according to claim 1, characterized in that: The buffer grooves (501) are at least two.

9. The automatic lid flipping mechanism for a trash can according to claim 1, characterized in that: The number of the mechanical arms (4) is two, and the two mechanical arms (4) are distributed in mirror images on both sides of the output end of the electric push rod (3).

10. The automatic lid flipping mechanism for a trash can according to claim 1, characterized in that: A sealing cover (17) is embedded in the installation cavity (201), which is sealed by the sealing cover (17).

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