A one-way damping structure for a bucket lid

Abstract

The present invention discloses a one-way damping structure for a bucket lid, which relates to the technical field of intelligent trash cans. It includes a first gear rotatably connected to the bucket body; a second gear synchronously rotatably connected to the bucket lid, and the second gear can axially slide relative to the bucket lid; an elastic reset device arranged in the axial direction of the second gear and installed between the second gear and the bucket lid, and the second gear can rotate relative to the elastic reset device; the first gear and the second gear are in one-way meshing, and the rotation direction of the one-way meshing between the first gear and the second gear is the same as the rotation direction when the bucket lid is opened; during operation, the first gear and the bucket body rotate in one direction, and the one-way rotation direction of the first gear and the bucket body is opposite to the one-way meshing rotation direction of the first gear and the second gear. The present invention discloses a one-way damping structure with a simple structure that can achieve damping effects both when opening and / or closing.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent trash cans, and particularly to a one-way damping structure for a trash can lid. Background Art

[0002] Currently, the damping structures on the market can be divided into three types: two-way damping structure, spring one-way damping structure, and one-way valve one-way damping structure. Among them, the two-way damping structure is relatively simple and low in cost. However, since there is damping force in both directions of opening and closing, its performance sometimes cannot meet the special requirements of the trash can lid opening and closing. The spring one-way damping structure relies on the compression and energy storage when the trash can lid falls and closes, and releases elastic force when lifted and opened to achieve the one-way damping function. It has a simple structure and low cost. However, the spring of this structure has a limited lifespan, and if only relying on the spring one-way damping structure to achieve damping slow descent, the required spring force is greater than the gravity, so the trash can lid cannot maintain the natural closed state and requires an additional buckle structure to lock the position of the trash can lid. Therefore, its scope of use is limited. The one-way valve one-way damping structure is the most widely used. Because of its small volume, light weight, large damping force range, and stable and reliable structure, it is widely used in devices such as toilet lids and car trunks. However, its cost is relatively high, which is not conducive to products that pursue simple and low-cost implementation of the one-way damping slow descent effect.

[0003] Therefore, to solve the above technical problems, a new technical solution needs to be proposed to solve this problem. In particular, a one-way damping structure for a trash can lid is provided. Summary of the Invention

[0004] In order to solve the technical problems that the existing spring-type one-way damping structure in the market has a limited lifespan, the two-way damping structure has damping forces in both opening and closing directions and is not suitable for the special needs of the trash can lid opening and closing, and the one-way valve one-way damping structure has a high cost, the present invention provides another one-way damping structure for a trash can lid with a simple structure.

[0005] To achieve the above object, the following technical solution is provided: A one-way damping structure for a trash can lid, comprising the following components: a first gear, the first gear is rotatably connected to the trash can body; a second gear, the second gear is synchronously rotatably connected to the trash can lid, and the second gear can axially slide relative to the trash can lid; an elastic reset device, the elastic reset device is arranged in the axial direction of the second gear, and the elastic reset device is installed between the second gear and the trash can lid; the first gear and the second gear are in one-way meshing, and the rotational direction of the one-way meshing between the first gear and the second gear is the same as the rotational direction when the trash can lid is opened; during operation, the first gear and the trash can body rotate in one direction, and the one-way rotational direction of the first gear and the trash can body is opposite to the one-way meshing rotational direction of the first gear and the second gear.

[0006] Preferably, an elastic body is further provided between the first gear and the barrel body. The elastic body extends outward from the first gear and is in interference fit with the barrel body. The elastic body can rotate relative to the barrel body, and the first gear is in surface fit with the elastic body to achieve synchronous rotation.

[0007] Preferably, the first gear includes a first tooth disc end and a first connection end. The first tooth disc end is unidirectionally meshed and connected with the second gear; the elastic body is stuck on the first connection end and passes through the first connection end to be in interference fit with the barrel body.

[0008] Preferably, the second gear includes a second tooth disc end and a second connection end. The second tooth disc end is unidirectionally meshed and connected with the first gear; the second connection end is in surface fit with the barrel cover, and the elastic reset device is arranged inside the second connection end.

[0009] Preferably, a first tooth disc is provided at the surface edge of the first tooth disc end, and a cavity is provided in the middle of the first tooth disc end; a second tooth disc is provided on the surface of the second tooth disc end, and a limiting post matching the cavity is provided in the middle of the second tooth disc end; the first tooth disc is unidirectionally meshed and connected with the second tooth disc.

[0010] Preferably, the elastic reset device is a spring.

[0011] Preferably, the elastic body is rubber or polyurethane.

[0012] The beneficial effects of the present invention: By installing the first gear and the second gear that are unidirectionally meshed with each other and the elastic reset device between the barrel body and the barrel cover, when the barrel cover is opened, it rotates along the unidirectional rotation direction of the unidirectional meshing gear and compresses the elastic reset device, so that when the barrel cover is opened, it can be slowly opened along the circumferential angle of each gear of the unidirectional gear; when the barrel cover is closed, the unidirectional limit of the unidirectional gear forces the first gear to generate a damping force through the sliding friction generated between the elastic member and the barrel body, achieving the effect of slowly closing the barrel cover.

[0013] The structure of the present invention is simple, the principle is clear but the effect is obvious. When the barrel cover is opened, the torsion between the first gear and the second gear is less than the maximum static friction force between the elastic body and the barrel body, and the characteristic that the unidirectional gear needs to exert force again when reaching the bottom of each rack during rotation is used to achieve that the barrel cover needs to be continuously forced to open and the opening angle each time is limited, realizing the damping effect. When the barrel cover is closed, the torsion between the first gear and the second gear is greater than the maximum static friction force between the elastic body and the barrel body and also greater than the sliding friction force between the elastic body and the barrel body, and the damping effect is realized through the sliding friction force between the elastic body and the barrel body.

[0014] The structure of the present invention is simple, with low cost, continuous and stable damping force, and consistent magnitude. The existence of the self-locking inclined plane reduces the requirements for the elastic force magnitude, response time, etc. of the elastic structure, further reducing the cost, decreasing the resistance when opening the bucket lid, reducing the operating noise when the one-way damping structure is opened, reducing the impact force of the one-way meshing gear set, increasing the structural life, ensuring the stable and reliable operation of the one-way damping structure, and improving the reliability of the one-way damping structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic exploded view of the parts of the present invention.

[0016] Figure 2 is a schematic assembled view of the present invention.

[0017] Figure 3 is a schematic view of the one-way meshing structure of the gears of the present invention.

[0018] Figure 4 is a schematic view of the usage environment structure of the present invention.

[0019] Figure 5 is Figure 4 an enlarged schematic view of part A in

[0020] Figure 6 is a schematic view of the structure of the one-way meshing self-locking inclined plane of the gears of the present invention.

[0021] Wherein:

[0022] 1. Elastic reset device; 2. First gear; 21. First tooth disc end; 211. First tooth disc; 22. First connection end; 3. Second gear; 31. Second tooth disc end; 311. Second tooth disc; 312. Limit post; 32. Second connection end; 4. Elastic body; 10. Bucket body; 20. Bucket lid. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that, when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, when terms such as "first", "second", "third" are used, they are only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, when terms such as "installed", "connected", "coupled" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] As Figure 1 , Figure 4 and Figure 5 shown, a one-way damping structure for a bucket lid includes the following components: a first gear 2, the first gear 2 is rotatably connected to the bucket body 10, and during operation, the first gear 2 is unidirectionally rotatably connected to the bucket body 10. A second gear 3, the second gear 3 is synchronously rotatably connected to the bucket lid 20, and the second gear 3 can slide back and forth in the bucket lid 20 along the axial direction. An elastic reset device 1, the elastic reset device 1 is arranged in the axial direction of the second gear 3, the elastic reset device 1 is installed between the second gear 3 and the bucket lid 20, and the elastic reset device 1 provides an elastic reset force for the back-and-forth sliding of the second gear 3 in the bucket lid. The second gear 3 can rotate relative to the elastic reset device 1, so that when the bucket lid is opened and the bucket lid can drive the second gear to rotate relative to the first gear, the elastic reset device will not generate a large resistance to the rotation of the second gear. The first gear 2 is unidirectionally meshed with the second gear 3, and the rotational direction of the unidirectional meshing between the first gear 2 and the second gear 3 is the same as the rotational direction when the bucket lid 20 is opened.

[0027] The preferred ways to achieve the rotational connection between the first gear 2 and the bucket body 10, and the first gear 2 being unidirectionally rotatably connected to the bucket body 10 during operation are: (1) the first gear 2 is unidirectionally meshed and rotatably connected to the bucket body 10, and the rotational direction of the unidirectional meshing is opposite to the rotational direction of the unidirectional meshing of the second gear relative to the first gear; (2) a sliding friction resistance between the first gear and the bucket body is provided by an elastic body to achieve unidirectional rotational connection, and the maximum static friction force between the elastic body and the bucket body is less than the unidirectional meshing force between the first gear and the second gear.

[0028] With the above structure, when the bucket cover is opened, since the rotation direction is the same as that of the one-way meshing of the first gear and the second gear, the second gear can rotate relative to the first gear. At this time, the first gear is relatively stationary with respect to the bucket body, and the bucket cover is opened. When closing the bucket cover, the second gear remains meshed with the first gear, and the driving torque is transmitted from the bucket cover to the second gear and then to the first gear. The relative rotation of the first gear and the bucket body provides continuous rotational damping for the bucket body.

[0029] Embodiment 1:

[0030] The first gear 2 includes a first tooth disc end 21 and a first connection end 22 with an integrated design. The first tooth disc end 21 is connected to the second gear 3 in a one-way meshing manner. The circumferential edge of the surface of the first tooth disc end 21 is provided with a first tooth disc 211. The middle of the first tooth disc end 21, that is, the enclosed area in the middle of the first tooth disc 211, is a cavity. The first connection end 22 is made of a material with an elastic structure and is press-fitted into the bucket body 10. While the first connection end 22 is press-fitted with the bucket body 10, the first connection end can also rotate relative to the bucket body. When the torque transmitted from the first tooth disc end 22 is greater than the maximum static friction force between the first connection end 22 and the bucket body, the first gear 2 will rotate circumferentially relative to the bucket body 10. The elastic material of the first connection end 22 is preferably rubber or polyurethane.

[0031] The second gear 3 includes a second tooth disc end 31 and a second connection end 32 with an integrated design. The second tooth disc end 31 is connected to the first tooth disc end 21 of the first gear 2 in a one-way meshing manner. The circumferential edge of the surface of the second tooth disc end 31 is provided with a second tooth disc 311. A limiting column 312 is provided at the middle of the second tooth disc end 31, that is, the enclosed area in the middle of the second tooth disc 311. The limiting column 312 is in fit connection with the cavity of the first tooth disc end 21, making the connection structure between the first gear and the second gear more stable with increased connectivity. The second tooth disc 311 is connected to the first tooth disc 211 in a one-way meshing manner. The second connection end 32 is rotationally connected to the bucket cover 20 synchronously. The synchronous rotational connection method can be that the second connection end 32 is in surface fit or limiting snap connection with the bucket cover, so that when the bucket cover 20 is opened, the second connection end 32 will rotate synchronously with the opening of the bucket cover 20. At the same time, the second connection end 32 can also move back and forth along the axial direction of the second gear 3 within the bucket cover 20. An elastic reset device 1, preferably a spring, is arranged inside the second connection end 32. The second connection end 32 is a rectangular structure with a hollow interior, and the elastic reset device 1 is arranged in its internal hollow structure. One end of the elastic reset device 1 abuts against the second tooth disc end, and the other end abuts against the bucket cover 20. When the second tooth disc 311 rotates circumferentially relative to the first tooth disc 211, the elastic reset device 1 will be compressed. At the same time, during the subsequent rotation process, the elastic reset device 1 will also extrude the second gear 3 under the action of the elastic restoring force, so that the second gear 3 and the first gear 2 mesh with each other again.

[0032] In this embodiment, when the bucket lid is opened, the meshing force between the second gear and the first gear is less than the maximum static friction force between the first gear and the bucket body, causing the second gear to rotate with the bucket lid while the first gear remains stationary relative to the bucket body. A spring is used to achieve the re-meshing of the second gear and the first gear. When the bucket lid is closed, the meshing force between the second gear and the first gear is greater than the maximum static friction force between the first gear and the bucket body, causing the first gear and the second gear to be relatively stationary. The bucket lid drives the second gear and the first gear to rotate relative to the bucket body together. The elastic first connection end of the first gear provides a continuous sliding friction force for the rotation to achieve the damping effect during closing.

[0033] As Figure 3 shown, the implementation method of different meshing forces in different rotation directions between the first gear and the second gear is mainly achieved by using a one-way meshing structure of the gears. This one-way meshing structure between the gears uses existing technologies, and any structure that can achieve the function of the rotation direction of the one-way meshing between the first gear and the second gear being consistent with the rotation direction when the bucket lid is opened can be used. As Figure 6 shown, in the present invention, for the setting of the one-way meshing gear rack, it is preferably that the rack surface of the first gear is a self-locking inclined surface that slopes downward with respect to the horizontal plane, specifically with an angle of 8 degrees with the horizontal plane, and the other surface is an inclined surface upward. There are tooth tips on the horizontal circumferential surface between the self-locking shoe surface and the inclined surface. The self-locking angle between the first gear and the second gear is 8 degrees.

[0034] Embodiment Two:

[0035] On the basis of Embodiment One, an elastic body 4 is added to the first connection end. The elastic body 4 is made of a hard elastic material, preferably rubber or polyurethane. An elastic body 4 is also provided between the first gear 2 and the bucket body 10. The elastic body 4 extends outward from the inside of the first gear 2 and is in interference fit with the bucket body 10. The elastic body 4 can rotate relative to the bucket body 10. The first gear 2 is in surface fit with the elastic body 4 to ensure that there is no relative rotation between the first gear and the elastic body, so as to rotate synchronously. The first connection end 22 of the first gear 2 has a structure with a hollow interior and a certain opening on the outer arm. The main part of the elastic body 4 is filled in the hollow space of the first connection end 22, and the extending part of the elastic body 4 is designed to have the same shape and size as the opening of the outer arm of the first connection end 22, so that the extending part extends outward from the opening of the outer arm of the first connection end 22 and is in interference fit connection with the bucket body 10. At the same time, when the torque transmitted from the first tooth disc end 22 is greater than the maximum static friction force between the elastic body 4 and the bucket body, the first gear 2 drives the elastic body 4 to rotate circumferentially relative to the bucket body 10.

[0036] Embodiment Three:

[0037] On the basis of the first embodiment, the barrel body 10 and the first connection end 22 are connected in one-way meshing through one-way meshing gears, and the one-way rotation direction between the first connection end and the barrel body is opposite to the one-way rotation direction between the second gear and the first gear.

[0038] As Figure 3 shown, when the lid of the present invention is opened, the force is transmitted from the lid 20 to the second gear 3, and the force of the second gear 3 is transmitted from the second connection end 32 to the second tooth disc end 31. Since the torsional force between the first tooth disc and the second tooth disc is less than the maximum static friction force between the first connection end / elastic body and the barrel body, the first gear and the barrel body remain stationary, and the lid and the second gear rotate synchronously. Specifically, the rack on the second tooth disc end 31 moves along the inclined surface of the rack, and at the same time, the second gear moves backward and presses the elastic reset device 4. When the tooth tips of the rack are opposite, the extrusion of the elastic reset device reaches the maximum. When continuing to rotate, the tooth tips of the second tooth disc move to the tooth valleys of the first tooth disc, and the elastic reset device presses the second gear under the action of the elastic restoring force, so that the first gear and the second gear are connected in one-way meshing again. Continuing in this way, the slow opening of the lid is finally achieved.

[0039] As Figure 2 shown, when the lid of the present invention is closed, the force is transmitted from the lid 20 to the second gear 3, and the force of the second gear 3 is transmitted from the second connection end 32 to the second tooth disc end 31. Since the spring presses the second gear so that the tooth tips of the second gear correspond to the tooth valleys of the first gear, at this time, the torsional force between the first tooth disc and the second tooth disc is greater than the maximum static friction force between the first connection end / elastic body and the barrel body and also greater than the sliding friction force between the first connection end / elastic body and the barrel body, so that both the first gear and the second gear remain stationary, but the first connection end / elastic body rotates circumferentially relative to the trash barrel body and generates a sliding friction force, and this sliding friction force is used as a damping force to achieve the slow closing of the trash can lid.

[0040] The one-way damping structure of the lid of the present invention can be used not only in the field of intelligent trash cans for users, but also in other technical fields such as barrels, boxes, cabinets or doors for users.

[0041] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. A one-way damping structure for a bucket lid, characterized in that It includes the following components: A first gear (2), which is rotatably connected to the barrel body (10); A second gear (3), which is synchronously rotatably connected to the barrel cover (20), and the second gear (3) can axially slide relative to the barrel cover (20); An elastic reset device (1), which is arranged in the axial direction of the second gear (3), and the elastic reset device (1) is installed between the second gear (3) and the barrel cover (20); The first gear (2) and the second gear (3) are in one-way meshing, and when the barrel cover (20) is opened, the second gear (3) can rotate relative to the first gear (2); When the barrel cover (20) is closed, the first gear (2) and the second gear (3) remain in relative meshing. The first gear (2) rotates unidirectionally with the barrel body (10), and the unidirectional rotation direction of the first gear (2) with the barrel body (10) is opposite to the rotation direction of the second gear (3) relative to the first gear (2). The relative rotation of the first gear (2) and the barrel body (10) provides continuous rotational damping for the barrel cover (20). An elastic body (4) is also provided between the first gear (2) and the barrel body (10). The first gear (2) is tightly pressed against the barrel body (10) through the elastic body (4). The elastic body (4) extends from inside the first gear (2) to the outside and is in interference fit with the barrel body (10). The elastic body (4) can rotate relative to the barrel body (10), and the first gear (2) is in profile fit with the elastic body (4) to achieve synchronous rotation. The elastic reset device (1) is a spring.

2. The one-way damping structure of a bucket lid according to claim 1, characterized in that: The first gear (2) includes a first tooth disc end (21) and a first connection end (22). The first tooth disc end (21) is in one-way meshing connection with the second gear (3). The elastic body (4) is stuck on the first connection end (22) and passes through the first connection end (22) to be in interference fit with the barrel body (10).

3. The one-way damping structure of a bucket lid according to claim 1, wherein: The second gear (3) includes a second tooth disc end (31) and a second connection end (32). The second tooth disc end (31) is in one-way meshing connection with the first gear (2). The second connection end (32) is in profile fit with the barrel cover (20), and the elastic reset device (1) is arranged inside the second connection end (32).

4. The one-way damping structure of a bucket lid according to claim 2, characterized in that: The second gear (3) includes a second tooth disc end (31) and a second connection end (32). The second tooth disc end (31) is in one-way meshing connection with the first tooth disc end (21). The second connection end (32) is in profile fit with the barrel cover (20), and the elastic reset device (1) is arranged inside the second connection end (32).

5. The one-way damping structure of a bucket lid according to claim 4, characterized in that: The surface edge of the first tooth disc end (21) is provided with a first tooth disc (211), and a cavity is provided in the middle of the first tooth disc end (21). The surface of the second tooth disc end (31) is provided with a second tooth disc (311), and a limiting post (312) matching the cavity is provided in the middle of the second tooth disc end (31). The first tooth disc (211) is in one-way meshing connection with the second tooth disc (311).

6. The one-way damping structure of a barrel cover according to claim 1, wherein: The elastomer (4) is rubber or polyurethane.

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