A smart trash can lid opening and closing device

Abstract

This utility model discloses an intelligent trash can lid opening and closing device in the field of intelligent trash can technology, aiming to solve problems such as insufficient control of the opening and closing speed of trash can lids, large impact and vibration, and high noise in existing technologies. The device includes a cam mechanism, a transmission rod, a lid, a bin body, and a connecting shaft. The cam mechanism includes a cam body and a drive assembly. The cam body is connected to the drive assembly via the connecting shaft. One side of the transmission rod meshes with the cam body, and the other side is drively connected to the lid. The drive assembly drives the cam body to rotate, which in turn drives the transmission rod to rotate, thus converting the rotational motion of the transmission rod into the opening and closing action of the lid. This utility model can achieve precise control of the opening and closing speed of the trash can lid through the asymmetrical contour design of the cam body.

Description

Technical Field

[0001] This utility model relates to an intelligent trash can lid opening and closing device, belonging to the field of intelligent trash can technology. Background Technology

[0002] With the continuous advancement of technology, smart trash cans are gaining increasing attention and popularity due to their convenience and intelligent functions. However, current smart trash cans on the market have some issues with the opening and closing speed control of their lids. Most trash can lids use reduction gears to control the opening and closing speed. While this design allows for a fast response, it generates significant acceleration when the lid begins to open and closes. This not only causes noticeable impact and vibration during opening and closing but also reduces the lid's strength and generates unnecessary noise. These problems seriously affect the user experience and fail to meet the diverse needs of users in different usage scenarios. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an intelligent trash can lid opening and closing device that can solve the problems of large impact and vibration, obvious noise, inflexible opening and closing speed, and inability to meet the needs of different usage scenarios in the process of opening and closing existing trash can lids.

[0004] To solve the above-mentioned technical problems, this utility model is implemented using the following technical solution: A smart trash can lid opening and closing device includes a cam mechanism, a transmission rod, a lid, a bin body, and a connecting shaft. The cam mechanism includes a cam body and a drive assembly. The cam body is connected to the drive assembly via the connecting shaft. One side of the transmission rod meshes with the cam body, and the other side is connected to the lid. The drive assembly drives the cam body to rotate, which in turn drives the transmission rod to rotate, thereby converting the rotational motion of the transmission rod into the opening and closing action of the lid.

[0005] Preferably, the cam body has an asymmetrical profile.

[0006] Preferably, the asymmetrical profile includes a first profile, a second profile, and a third profile, which sequentially contact the transmission rod and drive the transmission rod to perform multi-stage movements.

[0007] Preferably, both the beginning of the first contour and the end of the third contour are provided with arcuate protrusions for restricting the movement of the cam body.

[0008] Preferably, a fixing bracket is installed on both sides of the cam body, and the fixing bracket is provided with a through hole. The connecting shaft of the cam body and the drive assembly passes through the through hole, so that the connecting shaft and the through hole form a clearance fit.

[0009] Preferably, the space between the connecting shaft and the through hole is filled with grease.

[0010] Preferably, the transmission rod is fixed with a first connecting structure and a cam engagement structure. The transmission rod is connected to the cover through the first connecting structure, and the transmission rod engages with the cam body through the cam engagement structure.

[0011] Preferably, the first connecting structure is a symmetrical flat plate structure, and the axis of symmetry of the first connecting structure is coaxial with the axis of symmetry of the cam engagement structure.

[0012] Preferably, the included angle between the first connecting structure and the cam engagement structure is between 45° and 135°.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This invention connects the cam body to a drive assembly via a connecting shaft. The drive assembly provides power to the cam body, enabling it to rotate according to a preset motion pattern. One side of the transmission rod meshes with the cam body, while the other side is connected to the cover. When the cam body rotates under the drive assembly, it pushes the transmission rod to rotate. The transmission rod then converts the rotational motion into the opening and closing action of the cover, thus achieving automatic opening and closing of the trash can lid.

[0014] The aforementioned device, through a special asymmetrical contour design of the cam body, enables multi-stage speed control during the opening and closing of the trash can lid. For example, when opening the lid, the cam body can initially push the lid up at a relatively fast speed, then gradually slow down to achieve a smooth opening; when closing, it can initially start slowly, then gradually accelerate, and finally close quickly to ensure a tight seal. This multi-stage speed control effectively reduces the impact and vibration during opening and closing, lowers noise, and improves the lifespan of the trash can and the user experience. Furthermore, the device is simple in structure, low in cost, easy to install and maintain, and possesses high practicality and market potential. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an intelligent trash can lid opening and closing device provided by this utility model; Figure 2 This is a schematic diagram of the asymmetrical profile cam body structure provided by this utility model; Figure 3 This is a structural schematic diagram of the fixing frame provided by this utility model; Figure 4 This is a structural schematic diagram of the transmission rod provided by this utility model; In the figure: 1. Cam body; 2. Transmission rod; 3. Cover; 4. Fixing frame; 5. Drive assembly; 6. Barrel; 7. Connecting shaft; 8. Arc protrusion; 9. Through hole; 10. Rib; 11. First contour; 12. Second contour; 13. Third contour; 14. First connecting structure; 15. Cam meshing structure. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0019] See Figure 1This utility model introduces an intelligent trash can lid opening and closing device, the core of which is to realize intelligent opening and closing control of the trash can lid through a cam mechanism. The device includes a cam mechanism, a transmission rod 2, a lid 3, a bin body 6, and a connecting shaft 7. The cam mechanism includes a cam body 1 and a drive assembly 5. The cam body 1 is connected to the drive assembly through the connecting shaft 7, thereby realizing the transmission of power.

[0020] During the operation of the device, the drive assembly 5 provides power to drive the cam body 1 to rotate. The asymmetrical contour structure of the cam body 1 enables it to achieve different motion speeds when rotating forward and backward. Then, through meshing with the transmission rod 2, the rotational motion is transmitted to the transmission rod 2. One side of the transmission rod 2 meshes with the cam body 1, and the other side is connected to the cover 3. Through the rotational motion of the transmission rod 2, the power is finally converted into the opening and closing action of the cover 3.

[0021] In summary, this device not only enables the automatic opening and closing of the trash can lid, but also precisely controls the opening and closing speed of the lid 3 at different stages through the special contour of the cam body 1. For example, during the opening process, the cam body 1 can first push the lid up at a relatively fast speed, and then gradually slow down to achieve a smooth opening. During the closing process, it can first start slowly, then gradually accelerate, and finally close quickly to ensure a tight closure of the lid. This multi-stage speed control method effectively solves the impact and vibration problems existing in the traditional opening and closing of trash cans, reduces noise, improves the user experience, and meets the needs of different usage scenarios. Example 2

[0022] See Figure 2 The cam body 1 has an asymmetrical profile, which is the key to achieving multi-segment speed control. The asymmetrical profile of the cam body 1 is an arc that is different from the base circle, including a first profile 11, a second profile 12 and a third profile 13. The three profiles contact the transmission rod 2 in sequence and push the transmission rod to perform multi-segment movements. During the opening or closing of the cover, the first profile 11 can achieve rapid movement, the second profile 12 can achieve medium-speed movement, and the third profile 13 is used for slow movement, thereby effectively reducing the impact and noise during the opening and closing process.

[0023] Among them, the distance from the first contour 11 to the center of the base circle is slightly larger than the radius of the base circle; the distance from the second contour 12 to the center of the base circle is greater than the radius of the base circle but less than the distance from the first contour 11 to the center of the base circle; and the distance from the third contour 14 to the center of the base circle is the farthest.

[0024] Furthermore, the process of opening the trash can lid includes the following three stages: Initial stage: The contour design of the cam body 1 enables the cover to rise quickly in response to user operation; Intermediate stage: The cam profile gradually changes, slowing down the lifting speed of the lid to achieve a smooth opening action; Final stage: The cam profile changes further, increasing the speed at which the lid rises again, ensuring that the lid can be fully opened.

[0025] The process of closing the trash can lid: Initial stage: The contour design of the cam body 1 allows the cover to open slowly, reducing the impact when closing; Intermediate stage: The cam profile gradually changes, which increases the speed at which the lid descends to close the lid quickly; Final stage: The cam profile is further modified to slow down the descent of the lid, ensuring that the lid can close smoothly and tightly.

[0026] For example, during forward rotation, the asymmetrical contour of the cam body 1 gradually pushes the transmission rod 2 upward. The upward movement of the transmission rod 2 lifts the cover 3 upward through its connection structure with the cover 3. During reverse rotation, the asymmetrical contour of the cam body 1 gradually pushes the transmission rod 2 downward. The downward movement of the transmission rod 2 presses the cover 3 down through its connection structure with the cover 3 to maintain the airtightness of the trash can and prevent odors from escaping.

[0027] In order to limit the range of motion of the cam body 1, arc protrusions 8 are provided at the beginning of the first contour 11 and the end of the third contour 13 to replace the traditional rectangular protrusions. This not only limits the movement of the cam, but also reduces the contact area during collision, further reducing noise and vibration.

[0028] See Figure 1 and Figure 3 In order to ensure that the cam body 1 can withstand a large enough force when it moves, a fixing frame 4 is installed on both sides of the cam body 1, and a stiffener 10 is provided in the middle of the fixing frame 4. The stiffener 10 ensures the overall strength of the fixing frame 4 and gives it a strong load-bearing capacity to meet the pressure that the cam bears when the lid is opened.

[0029] In another embodiment, the fixing bracket 4 is connected to the barrel 6 by threads. The fixing bracket is provided with a through hole 9. The cam body 1 and the connecting shaft 7 on the drive assembly 5 pass through the through hole 9 and are connected to the cam body 1 to form a clearance fit. This not only ensures the stable installation of the cam body 1, but also further reduces friction and noise by filling the space between the connecting shaft 7 and the through hole 9 with grease, thus ensuring the smooth rotation of the cam.

[0030] See Figure 4The transmission rod 2 is also fixed with a first connecting structure 14 and a cam engagement structure 15. The first connecting structure 14 is used to connect with the cover 3 and transmit the rotational motion of the transmission rod 2 to the cover 3. The cam engagement structure 15 engages with the cam body 1 and transmits the rotational motion of the cam body 1 to the transmission rod 2. The cam engagement structure 15 can be a two-dimensional rod structure, usually a long strip component. The end that engages with the cam body 1 is surface-polished to achieve effective motion engagement with the cam body 1. The position of this two-dimensional rod structure is generally at 1 / 3 to 2 / 3 of the rod, preferably 1 / 2, which is located at the center of the transmission rod 2. The first connecting structure 14 is a symmetrical flat plate structure, and its axis of symmetry is coaxial with the axis of symmetry of the cam engagement structure 15, thereby ensuring the smoothness and reliability of the transmission.

[0031] Furthermore, when the cam body 1 rotates, it pushes the first connecting structure 14 plate upward through its contour. At the same time, in order to reduce the noise caused by friction, the first connecting structure 14 is rounded. The cam engagement structure 15 fixed above the transmission rod 2 is connected to the connecting plate on the cover 3, so that the movement of the first connecting structure 14 is transmitted to the cam engagement structure 15 through the transmission rod 2, thereby driving the cover 3 to move, thus realizing the opening and closing action of the cover 3.

[0032] Furthermore, the first connecting structure 14 is designed to be longer than half the length of the cover 3 and slightly narrower than the width of the cover 3, so as to ensure that the cover 3 moves smoothly when opened. The cover 3 and the first connecting mechanism 14 are connected by adhesive bonding, which not only ensures the stability of the transmission, but also reduces the installation cost.

[0033] In addition, the included angle between the first connecting structure and the cam engagement structure is between 45° and 135° to further optimize the motion effect of the transmission rod 2 and ensure that the cover 3 remains stable and smooth during the opening and closing process.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A smart trash can lid opening and closing device, characterized in that, The device includes a cam mechanism, a transmission rod (2), a cover (3), a barrel (6), and a connecting shaft (7). The cam mechanism includes a cam body (1) and a drive assembly (5). The cam body (1) is connected to the drive assembly via the connecting shaft (7). One side of the transmission rod (2) meshes with the cam body (1), and the other side is connected to the cover (3). The drive assembly (5) drives the cam body (1) to rotate, thereby driving the transmission rod (2) to rotate, and thus converting the rotational motion of the transmission rod (2) into the opening and closing action of the cover (3).

2. The trash can lid opening and closing device according to claim 1, characterized in that, The cam body (1) has an asymmetrical profile.

3. The trash can lid opening and closing device according to claim 2, characterized in that, The asymmetrical contour includes a first contour (11), a second contour (12) and a third contour (13), which sequentially contact the transmission rod (2) and push the transmission rod (2) to perform multi-stage motion.

4. The trash can lid opening and closing device according to claim 3, characterized in that, Both the beginning of the first contour (11) and the end of the third contour are provided with arc protrusions (8) for restricting the movement of the cam body (1).

5. The trash can lid opening and closing device according to claim 1, characterized in that, The cam body (1) is equipped with a fixing bracket (4) on both sides. The fixing bracket (4) is provided with a through hole (9). The connecting shaft (7) on the cam body (1) and the drive assembly (5) passes through the through hole (9), so that the connecting shaft (7) and the through hole (9) form a clearance fit.

6. The trash can lid opening and closing device according to claim 5, characterized in that, The connecting shaft (7) and the through hole (9) are filled with grease.

7. The trash can lid opening and closing device according to claim 1, characterized in that, The transmission rod (2) is fixed with a first connecting structure (14) and a cam engagement structure (15). The transmission rod (2) is connected to the cover (3) through the first connecting structure (14), and the transmission rod (2) engages with the cam body (1) through the cam engagement structure (15).

8. The trash can lid opening and closing device according to claim 7, characterized in that, The first connecting structure (14) is a symmetrical flat plate structure, and the axis of symmetry of the first connecting structure (14) is coaxial with the axis of symmetry of the cam engagement structure (15).

9. The trash can lid opening and closing device according to claim 8, characterized in that, The included angle between the first connecting structure (14) and the cam engagement structure (15) is between 45° and 135°.

Images