Transmission mechanism for bidirectional rotary opening and closing of garbage can

Abstract

The transmission mechanism comprises a center shaft and a sleeve shaft, and the sleeve shaft is connected to the periphery of the center shaft in a sleeved mode and rotationally connected with the center shaft. The device further comprises a driving unit and a gear set, the gear set is formed by meshing a plurality of gears and is in transmission connection with the driving unit, the center shaft and the sleeve shaft at the same time, a first output gear is arranged at the tail end of the center shaft, a second output gear is arranged at the tail end of the sleeve shaft, and the first output gear / the second output gear rotates along with rotation of the center shaft / the sleeve shaft. The gear set is in transmission connection with the center shaft and the sleeve shaft at the same time, and the center shaft and the sleeve shaft on the same axis are driven to rotate in different directions at the same time; and through a gear set formed by meshing a plurality of gears, the size of the transmission mechanism is reduced and the mounting space of the transmission mechanism is saved while it is guaranteed that the center shaft and the sleeve shaft rotate in the opposite directions at the same time.

Description

Technical Field

[0001] The utility model belongs to the field of trash cans, and in particular relates to a transmission mechanism for the two-way rotating opening and closing of a trash can. Background Art

[0002] In the field of electric trash cans, the lid is usually driven by a motor to rotate and open and close, so as to achieve automatic opening and closing of the trash can. However, since the lid of an electric trash can opens automatically, a large movable space needs to be reserved for the lid to rotate to prevent the lid from colliding and being damaged during rotation. However, for large-volume trash cans, as the volume of the trash can increases, the lid also increases, and the required movable space also increases. To reduce the movable space required for the lid to rotate, some electric trash cans reduce the lid's rotation radius by splitting the lid in two, thereby reducing the movable space required for the lid to rotate. At the same time, a bidirectional rotating transmission mechanism is used to enable a single motor to drive different lids to rotate in different directions at the same time, reducing the number of motors and thus reducing costs.

[0003] Prior art, such as patent publication number CN219549553U, discloses a bidirectionally rotating output mechanism that uses bevel gears to drive different rotating shafts in different directions, achieving the effect of a single drive unit driving the different shafts in bidirectional rotation. However, the bevel gears have a certain tilt angle, resulting in a larger bevel gear. Furthermore, the meshing of the two bevel gears at right angles further increases the size of the output mechanism. When used in an electric trash can, this output mechanism requires additional installation space, reducing the effective volume of the trash can.

[0004] Therefore, there is an urgent need for a transmission mechanism for the two-way rotation opening and closing of a trash can to solve the above problems. Summary of the Invention

[0005] In response to the problems in the prior art, the present invention proposes a transmission mechanism for the bidirectional rotation and opening and closing of a trash can. The gear set is simultaneously connected to the central shaft and the sleeve shaft, thereby driving the central shaft and the sleeve shaft on the same axis to rotate in different directions. The gear set formed by the meshing of multiple gears reduces the volume of the transmission mechanism while ensuring that the central shaft and the sleeve shaft rotate in opposite directions at the same time, saving the installation space of the transmission mechanism.

[0006] The utility model is realized as follows: a transmission mechanism for the bidirectional rotational opening and closing of a trash can is installed on the trash can, the upper end of the trash can being open and provided with two bucket covers on opposite sides of each other; the transmission mechanism is in transmission connection with the bucket covers of the two trash cans, and is used to drive the two bucket covers to flip around the same axis, the transmission mechanism includes a central shaft, a sleeve shaft is sleeved on the central shaft, and the sleeve shaft is rotationally connected to the central shaft;

[0007] It also includes a gear set and a driving unit connected to the gear set. The gear set is formed by a plurality of meshing gears and is simultaneously connected to the central shaft and the sleeve shaft for driving the central shaft and the sleeve shaft to rotate in opposite directions at the same time, so that the two barrel covers at the openings open opposite to each other or close toward each other. The gear set reduces the volume of the transmission mechanism while ensuring that the central shaft and the sleeve shaft rotate in opposite directions at the same time through the meshing of a plurality of gears, thereby saving the installation space for installing the transmission mechanism.

[0008] Preferably, a first output gear is provided at the end of the central shaft, and a second output gear is provided at the end of the sleeve shaft. The lid is provided with transmission teeth corresponding to the first and second output gears, which mesh with each other and rotate with the first and second output gears. The first and second output gears are connected to the lid of the trash can, thereby improving the transmission accuracy and efficiency of the central shaft and sleeve shaft.

[0009] Preferably, a mounting hole is provided through the center of the first output gear, a first anti-rotation portion is provided in the mounting hole, and a second anti-rotation portion is provided on the central shaft to match the first anti-rotation portion. When the first output gear is connected to the central shaft, the first anti-rotation portion engages with the second anti-rotation portion. The first and second anti-rotation portions are used to prevent the first output gear from slipping on the central shaft, thereby improving the reliability of the connection between the first output gear and the central shaft.

[0010] Preferably, a non-circular anti-rotation hole is provided in the middle of the second output gear, and a third anti-rotation portion is provided on the sleeve shaft to match the anti-rotation hole. When the second output gear is connected to the sleeve shaft, the third anti-rotation portion is inserted into the anti-rotation hole. The anti-rotation hole and the third anti-rotation portion are used to prevent slippage between the second output gear and the sleeve shaft, thereby improving the reliability of the connection between the second output gear and the sleeve shaft.

[0011] Preferably, the gear set includes a gear reduction mechanism, which includes a first transmission gear and multiple reduction gears, and the multiple reduction gears are meshed in sequence; the reduction gear located at the end of the gear reduction mechanism meshes with the first transmission gear and is also connected to the sleeve shaft; the first transmission gear is connected to the center shaft. The first transmission gear provides an additional gear between the drive unit and the center shaft compared to the drive unit and the sleeve shaft, thereby changing the rotation direction of the center shaft, achieving the technical effect of a single drive unit simultaneously driving the center shaft and the sleeve shaft to rotate in different directions.

[0012] Specifically, the reduction gear includes a first tooth portion and a second tooth portion arranged in an upper and lower position, and the number of teeth of the first tooth portion is greater than the number of teeth of the second tooth portion; when the plurality of reduction gears are meshed in sequence, the first tooth portion and the second tooth portion of the plurality of reduction gears are meshed alternately. When the first tooth portion and the second tooth portion of different reduction gears are meshed, the second tooth portion acts as a driving portion to drive another reduction gear to rotate. Since the number of teeth of the first tooth portion is greater than the number of teeth of the second tooth portion, the first tooth portion has not rotated a circle after the second tooth portion rotates one circle, thereby achieving a reduction effect; by alternately meshing the first tooth portion and the second tooth portion of the plurality of reduction gears, the number of teeth of the first tooth portion and the second tooth portion can be reduced proportionally while ensuring the reduction effect of the gear reduction mechanism, thereby reducing the volume of a single reduction gear, making the structure of the gear reduction mechanism more compact, further reducing the volume of the gear reduction mechanism, and saving the installation space of the transmission mechanism.

[0013] Specifically, the sleeve shaft is provided with a third toothed portion, with the reduction gear meshing with the third toothed portion for transmission; the center shaft is provided with a second transmission gear, which meshes with the first transmission gear for transmission. The gear transmission drives the center shaft and sleeve shaft to rotate, thereby improving the transmission accuracy and efficiency of the gear set.

[0014] Specifically, the number of teeth on the first transmission gear is the same as the number of teeth on the second gear section; the number of teeth on the second transmission gear is the same as the number of teeth on the third gear section. The reduction gear at the end of the gear reduction mechanism is simultaneously meshed with the first transmission gear and the sleeve shaft. When the first transmission gear is meshed with the center shaft, the number of teeth on the first transmission gear is the same as the number of teeth on the second gear section, and the number of teeth on the second transmission gear is the same as the number of teeth on the third gear section. This ensures that the center shaft and sleeve shaft rotate at the same speed, thereby improving synchronization of the rotation of the center shaft and sleeve shaft.

[0015] Specifically, the gear reduction mechanism further includes two mounting shafts, on which the plurality of reduction gears are alternately mounted from top to bottom. The mounting shafts enable the plurality of reduction gears to be mounted axially, so that the gear reduction mechanism only requires two rows of reduction gears, effectively reducing the size of the reduction gear reduction group and further reducing the size of the transmission mechanism.

[0016] Specifically, multiple reduction gears installed on the same mounting shaft abut against each other in sequence to prevent gaps between the multiple reduction gears installed on the same mounting shaft, making the installation of the reduction gears tighter and further reducing the volume of the transmission mechanism. At the same time, the reduction gears can also be positioned by abutment, thereby improving the installation convenience of the reduction gears.

[0017] Specifically, the gear ratio of the first tooth portion to the second tooth portion is 1.5 to 4:1. By adjusting the gear ratio of the first tooth portion to the second tooth portion, the transmission mechanism can achieve different reduction ratios without changing its size, thereby enabling the transmission mechanism to adapt to different scenarios and improving its practicality and compatibility.

[0018] Preferably, a cushion is provided between the two barrel covers, the cushion being mounted on one of the barrel covers. When the two barrel covers are closed, the barrel covers press against the cushion. The cushion is used to reduce the impact force generated when the barrel covers are closed, preventing the barrel covers from being damaged by the impact force during closing, thereby extending the service life of the barrel covers.

[0019] Beneficial effects of the utility model:

[0020] The utility model proposes a transmission mechanism for the bidirectional rotating opening and closing of a trash can, which drives the central shaft and the sleeve shaft of the same axis to rotate in different directions at the same time by means of a gear set that is simultaneously connected to the central shaft and the sleeve shaft, thereby ensuring the synchronous rotation of the central shaft and the sleeve shaft; and the gear set formed by the meshing of multiple gears reduces the volume of the transmission mechanism while ensuring that the central shaft and the sleeve shaft rotate in opposite directions at the same time, saves the installation space of the transmission mechanism, and improves the transmission efficiency and transmission accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the transmission mechanism of the utility model;

[0022] Figure 2 This is an internal schematic diagram of the transmission mechanism of the present utility model;

[0023] Figure 3 It is a cross-sectional view of the central shaft and sleeve shaft of the transmission mechanism of the present utility model;

[0024] Figure 4 Schematic diagram of the gear set of the transmission mechanism of the present utility model;

[0025] Figure 5 It is an exploded schematic diagram of the central shaft and the first output gear of the transmission mechanism of the present invention;

[0026] Figure 6 This is an exploded schematic diagram of the sleeve shaft and the second output gear of the transmission mechanism of the present invention;

[0027] Figure 7 for Figure 1 An enlarged schematic diagram of point a;

[0028] Figure 8 This is a schematic diagram of the driving mechanism of the utility model for closing the barrel cover;

[0029] Figure 9 This is a schematic diagram of the transmission mechanism of the present invention driving the barrel cover to open.

[0030] Reference numerals:

[0031] 1. Center shaft; 2. Sleeve shaft; 3. First output gear; 4. Second output gear; 5. Drive unit; 6. Gear set; 7. Second transmission gear; 8. Barrel cover; 11. Second anti-rotation part; 21. Third tooth part; 22. Third anti-rotation part; 31. First anti-rotation part; 41. Anti-rotation hole; 61. Gear reduction mechanism; 81. Buffer pad; 611. Reduction gear; 612. First transmission gear; 613. Mounting shaft; 6111. First tooth part; 6112. Second tooth part. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1-6 As shown, a transmission mechanism for the bidirectional rotation opening and closing of a trash can is installed on the trash can. The upper end of the trash can is open, and two bucket covers 8 are provided at the opening. The transmission mechanism is connected to the bucket covers 8 of the two trash cans and is used to drive the two bucket covers 8 to flip around the same axis.

[0034] In this embodiment, a cushion pad 81 is further provided between the two bucket covers 8. The cushion pad 81 is mounted on one of the bucket covers 8. When the two bucket covers 8 are closed, the bucket covers 8 press against the cushion pad 81. The cushion pad 81 is used to reduce the impact force generated when the bucket covers 8 are closed, preventing the bucket covers 8 from being damaged by the impact force during closing, thereby extending the service life of the bucket covers 8.

[0035] The transmission mechanism includes a central shaft 1, a sleeve shaft 2 is sleeved on the central shaft 1, and the sleeve shaft 2 is rotatably connected to the central shaft 1;

[0036] It also includes a gear set 6 and a driving unit 5 driven by the gear set 6. The gear set 6 is formed by a plurality of meshing gears and is simultaneously connected to the central shaft 1 and the sleeve shaft 2 for driving the central shaft 1 and the sleeve shaft 2 to rotate in opposite directions at the same time, so that the two barrel covers 8 at the openings open opposite to each other or close toward each other. The gear set 6 reduces the volume of the gear set 6 by meshing a plurality of gears while the central shaft and the sleeve shaft rotate in opposite directions at the same time, thereby saving the installation space for installing the transmission mechanism.

[0037] In this embodiment, a first output gear 3 is provided at the end of the central shaft 1, a second output gear 4 is provided at the end of the sleeve shaft 2, and the lid 8 is provided with transmission teeth corresponding to the first output gear 3 / second output gear 4. The two gears mesh with each other, and the lid 8 rotates with the first output gear 3 / second output gear 4. The transmission connection between the first output gear 3 and the second output gear 4 and the lid 8 of the trash can is improved, thereby improving the transmission accuracy and efficiency of the central shaft 1 and the sleeve shaft 2.

[0038] In this embodiment, a mounting hole is provided through the center of the first output gear 3. A first anti-rotation portion 31 is provided in the mounting hole. A second anti-rotation portion 11 is provided on the central shaft 1 to mate with the first anti-rotation portion 31. When the first output gear 3 is connected to the central shaft 1, the first anti-rotation portion 31 engages with the second anti-rotation portion 11. The first anti-rotation portion 31 and the second anti-rotation portion 11 prevent the first output gear 3 from slipping on the central shaft 1, thereby improving the reliability of the connection between the first output gear 3 and the central shaft 1.

[0039] In this embodiment, a non-circular anti-rotation hole 41 is provided in the middle of the second output gear 4, and a third anti-rotation portion 22 is provided on the sleeve shaft 2 to match the anti-rotation hole 41. When the second output gear 4 is connected to the sleeve shaft 2, the third anti-rotation portion 22 is inserted into the anti-rotation hole 41. The anti-rotation hole 41 and the third anti-rotation portion 22 are used to prevent slippage between the second output gear 4 and the sleeve shaft 2, thereby improving the reliability of the connection between the second output gear 4 and the sleeve shaft 2.

[0040] In this embodiment, the gear set 6 includes a gear reduction mechanism 61, which includes a first transmission gear 612 and multiple reduction gears 611, with the multiple reduction gears 611 meshing in sequence. The reduction gear 611 at the end of the gear reduction mechanism 61 meshes with the first transmission gear 612 and is also in transmission connection with the sleeve shaft 2. The first transmission gear 612 is in transmission connection with the central shaft 1. The first transmission gear 612 provides an additional gear between the drive unit 5 and the central shaft 1 compared to the gear between the drive unit 5 and the sleeve shaft 2, thereby changing the rotation direction of the central shaft 1 and achieving the technical effect of a single drive unit 5 simultaneously driving the central shaft 1 and the sleeve shaft 2 to rotate in different directions.

[0041] Specifically, the reduction gear 611 includes a first tooth portion 6111 and a second tooth portion 6112 arranged upper and lower, and the number of teeth of the first tooth portion 6111 is greater than the number of teeth of the second tooth portion 6112; when the multiple reduction gears 611 are engaged in sequence, the first tooth portions 6111 and the second tooth portions 6112 of the multiple reduction gears 611 are engaged alternately. When the first tooth portion 6111 and the second tooth portion 6112 of different reduction gears 611 are engaged, the second tooth portion 6112 acts as a driving portion to drive the other reduction gear 611 to rotate. Since the number of teeth of the first tooth portion 6111 is greater than the number of teeth of the second tooth portion 6112, the first tooth portion 6111 has not rotated one circle after the second tooth portion 6112 rotates one circle, thereby achieving a deceleration effect; by alternately engaging the first tooth portion 6111 and the second tooth portion 6112 of multiple reduction gears 611, the number of teeth of the first tooth portion 6111 and the second tooth portion 6112 can be reduced proportionally while ensuring the deceleration effect of the gear reduction mechanism 61, thereby reducing the volume of a single reduction gear 611, making the structure of the gear reduction mechanism 61 more compact, further reducing the volume of the gear reduction mechanism 61, and saving the installation space of the transmission mechanism.

[0042] Specifically, the sleeve shaft 2 is provided with a third tooth portion 21, with which the reduction gear 611 meshes and transmits power. The center shaft 1 is provided with a second transmission gear 7, which meshes and transmits power with the first transmission gear 612. This gear transmission drives the center shaft 1 and sleeve shaft 2 to rotate, thereby improving the transmission accuracy and efficiency of the gear set 6.

[0043] Specifically, the number of teeth on the first transmission gear 612 is the same as the number of teeth on the second tooth portion 6112; the number of teeth on the second transmission gear 7 is the same as the number of teeth on the third tooth portion 21. The reduction gear 611 at the end of the gear reduction mechanism 61 is simultaneously meshed with the first transmission gear 612 and the sleeve shaft 2 for transmission. When the first transmission gear 612 is meshed with the central shaft 1 for transmission, the number of teeth on the first transmission gear 612 is the same as the number of teeth on the second tooth portion 6112, and the number of teeth on the second transmission gear 7 is the same as the number of teeth on the third tooth portion 21. This ensures that the central shaft 1 and sleeve shaft 2 rotate at the same speed, thereby improving synchronization during rotation of the central shaft 1 and sleeve shaft 2.

[0044] Specifically, the gear reduction mechanism 61 further includes two mounting shafts 613, on which the plurality of reduction gears 611 are alternately mounted from top to bottom. The mounting shafts 613 enable the plurality of reduction gears 611 to be mounted axially, so that the gear reduction mechanism 61 only requires two rows of reduction gears 611, effectively reducing the size of the reduction gear 611 reduction group and further reducing the size of the transmission mechanism.

[0045] Specifically, the multiple reduction gears 611 installed on the same installation shaft 613 abut against each other in sequence to prevent gaps between the multiple reduction gears 611 installed on the same installation shaft 613, so that the reduction gears 611 are installed more tightly, further reducing the volume of the transmission mechanism. At the same time, the reduction gears 611 can be positioned by abutting against each other, thereby improving the installation convenience of the reduction gears 611.

[0046] Specifically, the gear ratio of the first tooth portion 6111 to the second tooth portion 6112 is 3:1. By adjusting the gear ratio of the first tooth portion 6111 to the second tooth portion 6112, the transmission mechanism can achieve different reduction ratios without changing its size, thereby enabling the transmission mechanism to adapt to different scenarios and improving its practicality and compatibility.

[0047] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation to the present invention.

Claims

1. A transmission mechanism for the bidirectional rotational opening and closing of a trash can, mounted on the trash can; the trash can has an upper opening, and two lids are provided at the opening, the transmission mechanism being in transmission connection with the two lids for driving the two lids to flip around the same axis, characterized in that: The transmission mechanism includes a central shaft, a sleeve shaft is sleeved on the central shaft, and the sleeve shaft is rotatably connected to the central shaft; the central shaft and the sleeve shaft are respectively connected to the two barrel covers in a corresponding transmission manner; It also includes a gear set and a driving unit connected to the gear set; the gear set is formed by a plurality of meshing gears and is simultaneously connected to the central shaft and the sleeve shaft for driving the central shaft and the sleeve shaft to rotate in opposite directions at the same time, so that the two barrel covers at the openings open opposite to each other or close toward each other.

2. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 1, characterized in that: A first output gear is provided at the end of the central shaft, a second output gear is provided at the end of the sleeve shaft, and transmission teeth corresponding to the first output gear / second output gear are provided on the barrel cover. The two are engaged with each other for transmission, and the barrel cover rotates as the first output gear / second output gear rotates.

3. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 2, characterized in that: A penetrating mounting hole is provided in the middle of the first output gear, a first anti-rotation portion is provided in the mounting hole, and a second anti-rotation portion adapted to the first anti-rotation portion is provided on the central shaft; when the first output gear is connected to the central shaft, the first anti-rotation portion is engaged with the second anti-rotation portion.

4. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 2, characterized in that: A non-circular anti-rotation hole is provided in the middle of the second output gear, and a third anti-rotation part adapted to the anti-rotation hole is provided on the sleeve shaft. When the second output gear is connected to the sleeve shaft, the third anti-rotation part is inserted into the anti-rotation hole.

5. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 1, characterized in that: The gear set includes a gear reduction mechanism, which includes a first transmission gear and multiple reduction gears, and the multiple reduction gears are meshed in sequence; the reduction gear located at the end of the gear reduction mechanism is meshed and transmitted with the first transmission gear, and is also connected to the sleeve shaft; the first transmission gear is connected to the center shaft.

6. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 5, characterized in that: The reduction gear includes a first tooth portion and a second tooth portion arranged vertically, and the number of teeth of the first tooth portion is greater than the number of teeth of the second tooth portion; when the multiple reduction gears are engaged in sequence, the first tooth portions and the second tooth portions of the multiple reduction gears are engaged alternately.

7. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 6, characterized in that: The sleeve shaft is provided with a third tooth portion, and the reduction gear is engaged with the third tooth portion for transmission; the central shaft is provided with a second transmission gear, and the second transmission gear is engaged with the first transmission gear for transmission.

8. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 5, characterized in that: The gear reduction mechanism further includes two mounting shafts, and the plurality of reduction gears are alternately mounted on the two mounting shafts from top to bottom.

9. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 5, characterized in that: A plurality of reduction gears mounted on the same mounting shaft abut against each other in sequence.

10. The transmission mechanism for the two-way rotating opening and closing of a trash can according to claim 1, characterized in that: A buffer pad is further provided between the two barrel covers, and the buffer pad is installed on one of the barrel covers. When the two barrel covers are closed, the barrel covers are pressed against the buffer pad.

Images