Drive structure and trash can

Abstract

This utility model discloses a drive structure and a trash can. The drive structure includes a drive motor, a load connector, and a torque limiter. The drive motor has a drive end. The load connector is used to connect to a load device, and its inner peripheral wall has multiple meshing grooves distributed circumferentially. The torque limiter is connected to the drive end, and its outer peripheral wall has a connecting portion. Both ends of the connecting portion extending circumferentially have elastic protrusions. The elastic protrusions mesh with the meshing grooves, allowing the torque of the drive motor to be transmitted to the load connector through the torque limiter. The elastic protrusions can elastically deform and disengage from the meshing grooves after the transmitted torque exceeds a set threshold, causing the torque limiter and the load connector to slip relative to each other. This avoids damage to the drive motor due to a sharp increase in current caused by increased torque, and also avoids damage to the load connector and torque limiter due to tooth breakage between the elastic protrusions and the meshing grooves.

Description

Technical Field

[0001] This utility model relates to the field of trash can technology, and in particular to a drive structure and a trash can. Background Technology

[0002] Trash cans typically use a motor to drive the flip-top to open or close the lid. However, if there is trash at the opening of the trash can, and the trash jams the flip-top, preventing it from rotating smoothly, the torque on the flip-top increases. The motor then generates a large torque to try to overcome the resistance, which may damage the motor, the flip-top, or the connecting parts between the motor and the flip-top. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes a drive structure and a trash can.

[0004] In a first aspect, embodiments of the present invention provide a driving structure, the driving structure comprising:

[0005] A drive motor, having a drive end;

[0006] A load connector for connecting to a load device, wherein the inner peripheral wall of the load connector is provided with a plurality of meshing grooves distributed circumferentially.

[0007] A torque limiting component is provided, which is connected to the drive end. The outer peripheral wall of the torque limiting component is provided with a connecting part, and both ends of the connecting part extending circumferentially are provided with elastic protrusions.

[0008] The elastic protrusion engages with the meshing groove, allowing the torque of the drive motor to be transmitted to the load connector through the torque limiting member; the elastic protrusion can undergo elastic deformation and disengage from the meshing groove, causing the torque limiting member and the load connector to slip relative to each other.

[0009] According to some embodiments of the present invention, the connecting portion has multiple portions, and the multiple connecting portions are distributed circumferentially along the torque limiting member.

[0010] According to some embodiments of the present invention, the connecting part includes a connecting strip and an arc-shaped strip. One end of the connecting strip is connected to the outer peripheral wall of the torque limiting member, and the other end of the connecting strip is connected to the middle part of the arc-shaped strip. The center of the arc-shaped strip is located on the axis of the torque limiting member, and both ends of the arc-shaped strip are provided with the elastic protrusion teeth.

[0011] According to some embodiments of the present invention, the torque limiting member is provided with a mounting hole, the mounting hole extends axially and penetrates the torque limiting member, and the driving end is inserted into the mounting hole and is interference-fitted with the mounting hole.

[0012] According to some embodiments of this utility model, the driving end is a square column, the mounting hole is a square hole, and the driving end is inserted into the mounting hole so that the driving end and the torque limiting member can rotate synchronously.

[0013] According to some embodiments of the present invention, the axial direction of the torque limiting member is the front-rear direction, the outer peripheral wall of the torque limiting member is provided with a limiting part, the limiting part is located on the front side of the connecting part, and the rear side of the limiting part can abut against the front end face of the load connecting member.

[0014] According to some embodiments of the present invention, the front end of the load connector is recessed to form a groove, and the limiting part is located in the groove.

[0015] According to some embodiments of the present invention, the limiting portion has multiple portions, and the multiple limiting portions are distributed circumferentially along the torque limiting member.

[0016] According to some embodiments of the present invention, the limiting part is provided with a through hole, the through hole extends in the front-rear direction, the driving structure further includes a cap pin, the cap pin is inserted into the through hole from back to front, the cap of the cap pin can abut against the rear end face of the load connector, and the cap pin and the limiting part cooperate to restrict the load connector from moving in the front-rear direction.

[0017] The driving structure according to the embodiment of this utility model has at least the following technical effects:

[0018] 1. The drive end of the drive motor rotates, thereby causing the torque limiting component to rotate. Due to the meshing connection between the elastic convex teeth and the meshing groove, the rotation of the torque limiting component can drive the load connecting component to rotate synchronously, so that the load connecting component can drive the load equipment.

[0019] 2. When the load device is jammed and cannot rotate, the load connector is also jammed. At this time, the output torque of the drive motor increases, and the drive motor drives the torque limiting component to continue to rotate, increasing the torque transmitted by the torque limiting component to the load connector. This causes the elastic protrusion to deform elastically and disengage from the meshing groove. The torque limiting component rotates relative to the load connector, thereby preventing the drive motor from being damaged by a sharp increase in current due to the increased torque. It also prevents the elastic protrusion and the meshing groove from chipping, which would damage the load connector and the torque limiting component.

[0020] 3. Once the load device is no longer jammed, the elastic protrusion re-engages stably with the meshing groove under elastic recovery, allowing the drive motor to continue driving the torque limiting component and load connecting component to rotate at a lower output torque.

[0021] Secondly, this utility model embodiment also provides a trash can, including:

[0022] A barrel body having an opening, and a flip-top rotatably connected to the barrel body;

[0023] According to the driving structure of the first aspect embodiment of the present invention, the driving structure is installed on the barrel body, and the driving structure can drive the flip cover to rotate so that the flip cover seals or opens the opening.

[0024] The trash can according to the embodiments of this utility model has at least the following technical effects: The trash can uses this drive structure, where the drive end of the drive motor rotates, thereby causing the torque limiting component to rotate. Due to the meshing connection between the elastic protrusion and the meshing groove, the rotation of the torque limiting component can drive the load connecting component to rotate synchronously, enabling the load connecting component to drive the load device. When the load device is jammed and cannot rotate, the load connecting component is also jammed. At this time, the output torque of the drive motor increases, causing the drive motor to drive the torque limiting component to continue rotating and increasing the torque transmitted from the torque limiting component to the load connecting component. This causes the elastic protrusion to undergo elastic deformation and disengage from the meshing groove. The torque limiting component rotates relative to the load connecting component, thereby preventing the drive motor from being damaged by a sharp increase in current due to the increased torque, and also preventing tooth breakage between the elastic protrusion and the meshing groove, which would damage the load connecting component and the torque limiting component. When the load device is no longer jammed, the elastic protrusion re-engages stably with the meshing groove under elastic recovery, allowing the drive motor to continue driving the torque limiting component and the load connecting component to rotate at a lower output torque.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the driving structure of some embodiments of the present invention;

[0028] Figure 2 This is an exploded view of the driving structure of some embodiments of this utility model;

[0029] Figure 3 This is a schematic diagram of the driving structure of some embodiments of the present invention from another angle;

[0030] Figure 4 This is a structural schematic diagram of a torque limiting component according to some embodiments of the present invention.

[0031] Icon labels:

[0032] Drive motor 100; drive end 110;

[0033] Load connector 200; meshing groove 210; recess 220;

[0034] Torque limiting component 300; connecting part 310; elastic protruding tooth 320; connecting strip 331; arc strip 332; mounting hole 340; limiting part 350; through hole 360;

[0035] 400 for the cap stud; 410 for the cap part. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0041] According to some embodiments of this utility model, refer to Figures 1 to 4The drive structure includes a drive motor 100, a load connector 200, and a torque limiting member 300. The drive motor 100 has a drive end 110 at its front end. The load connector 200 is used to connect to a load device. The load connector 200 is annular, and its inner peripheral wall has multiple circumferentially distributed meshing grooves 210, which are evenly spaced. The torque limiting member 300 is connected to the drive end 110. The axis of the torque limiting member 300 is in the front-to-back direction, and the torque limiting member 300 and the load connector 200 are coaxially arranged. The outer peripheral wall of the torque limiting member 300 has a connecting portion 310, and both ends of the connecting portion 310 extending circumferentially have elastic protrusions 320. The two elastic protrusions 320 respectively engage with the two meshing grooves 210, allowing the torque of the drive motor 100 to be transmitted to the load connector 200 through the torque limiting member 300. When the elastic tooth 320 can transmit torque exceeding the set threshold, the elastic tooth 320 will undergo elastic deformation and disengage from the meshing groove 210, causing the torque limiting member 300 and the load connecting member 200 to slip relative to each other, and the drive motor 100 will drive the torque limiting member 300 to continue rotating.

[0042] It is understandable that the drive end 110 of the drive motor 100 rotates, thereby driving the torque limiting member 300 to rotate. At this time, the transmitted torque is small, the elastic convex tooth 320 and the meshing groove 210 remain engaged, and the rotation of the torque limiting member 300 can drive the load connecting member 200 to rotate synchronously, so that the load connecting member 200 can drive the load device.

[0043] When the load device is jammed and cannot rotate, the load connector 200 is also jammed. At this time, the output torque of the drive motor 100 increases, and the drive motor 100 drives the torque limiting component 300 to continue rotating and increases the torque transmitted by the torque limiting component 300 to the load connector 200. This causes the elastic protrusion 320 to undergo elastic deformation and disengage from the meshing groove 210. The torque limiting component 300 rotates relative to the load connector 200, thereby preventing the drive motor 100 from being damaged by a sharp increase in current due to the increase in torque. It also prevents the elastic protrusion 320 and the meshing groove 210 from chipping, which would damage the load connector 200 and the torque limiting component 300.

[0044] Once the load device is no longer jammed, the elastic protrusion 320 re-engages stably with the meshing groove 210 under elastic recovery, enabling the drive motor 100 to continue driving the torque limiting member 300 and the load connecting member 200 to rotate under a lower output torque.

[0045] This drive structure can protect the drive motor 100, the load connector 200 and the torque limiting component 300, thereby improving the service life of the drive structure.

[0046] Preferred, refer to Figure 2 and Figure 4 The connecting portion 310 has multiple portions, which are distributed circumferentially along the torque limiting member 300. The elastic protrusions 320 of the multiple connecting portions 310 are all connected to the meshing groove 210, thereby improving the connection stability between the torque limiting member 300 and the load connecting member 200.

[0047] According to some embodiments of this utility model, refer to Figure 4 The connecting part 310 includes a connecting strip 331 and an arc-shaped strip 332. One end of the connecting strip 331 is connected to the outer peripheral wall of the torque limiting member 300, and the other end of the connecting strip 331 is connected to the middle part of the arc-shaped strip 332. The arc-shaped strip 332 is arc-shaped and elastic. The center of the arc-shaped strip 332 is located on the axis of the torque limiting member 300. Both ends of the arc-shaped strip 332 are provided with elastic protrusions 320. The shape of the arc-shaped strip 332 is adapted to the inner peripheral wall of the load connecting member 200, thereby improving the connection stability between the torque limiting member 300 and the load connecting member 200.

[0048] According to some embodiments of this utility model, refer to Figure 2 The torque limiting member 300 is provided with a mounting hole 340, which extends axially and penetrates the torque limiting member 300. The driving end 110 is inserted into the mounting hole 340 and is interference-fitted with the mounting hole 340, so that the driving end 110 is fixedly connected to the torque limiting member 300. The rotation of the driving end 110 causes the torque limiting member 300 to rotate. Furthermore, the driving end 110 is a square prism, and the mounting hole 340 is a square hole. The insertion of the driving end 110 into the mounting hole 340 allows the driving end 110 and the torque limiting member 300 to rotate synchronously, preventing slippage between the driving end 110 and the hole wall of the mounting hole 340.

[0049] According to some embodiments of this utility model, refer to Figures 2 to 4 The torque limiting member 300 has its axis pointing forward and backward. A limiting portion 350 is provided on the outer peripheral wall of the torque limiting member 300. The limiting portion 350 is located on the front side of the connecting portion 310, and its rear side can abut against the front end face of the load connecting member 200, thereby limiting the forward movement of the load connecting member 200. Preferably, the front end face of the load connecting member 200 is recessed rearward to form a groove 220. The limiting portion 350 is located inside the groove 220, and its outer side can abut against the groove wall of the groove 220, thereby limiting the radial movement of the load connecting member 200 relative to the torque limiting member 300. Multiple limiting portions 350 are distributed circumferentially along the torque limiting member 300, thereby improving the connection stability between the load connecting member 200 and the torque limiting member 300.

[0050] According to some embodiments of this utility model, refer to Figure 2 and Figure 4The limiting part 350 is provided with a through hole 360, which extends in the front-rear direction. The driving structure also includes a cap 400, which is inserted into the through hole 360 ​​from back to front. The cap 410 of the cap 400 can abut against the rear end face of the load connector 200. The cap 400 and the limiting part 350 work together to restrict the load connector 200 from moving in the front-rear direction relative to the torque limiting member 300, so as to prevent the load connector 200 from separating from the torque limiting member 300. It can be understood that the cap 410 and the limiting part 350 are not tightly attached to the load connector 200, so as to ensure that the torque limiting member 300 and the load connector 200 can slip relative to each other when the transmitted torque is too large.

[0051] The trash can includes a body and a drive mechanism. The body has an opening and a hinged lid that rotates to connect to it. The drive mechanism is installed in the body and drives the lid to rotate, thus opening or closing the opening. This is a sensor-operated trash can; when a user approaches, it automatically senses their presence and controls the drive mechanism to rotate the lid, opening the trash can's opening.

[0052] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A driving structure, characterized in that, include: A drive motor (100) has a drive end (110); A load connector (200) is used to connect to a load device. The inner peripheral wall of the load connector (200) is provided with a plurality of meshing grooves (210) distributed in the circumferential direction. A torque limiting member (300) is connected to the driving end (110). The outer peripheral wall of the torque limiting member (300) is provided with a connecting part (310). Both ends of the connecting part (310) extending in the circumferential direction are provided with elastic protrusions (320). The elastic protrusion (320) engages with the meshing groove (210), so that the torque of the drive motor (100) is transmitted to the load connector (200) through the torque limiting member (300); the elastic protrusion (320) can undergo elastic deformation and disengage from the meshing groove (210), so that the torque limiting member (300) and the load connector (200) slip relative to each other.

2. The driving structure according to claim 1, characterized in that, The connecting portion (310) has a plurality of portions, which are distributed circumferentially along the torque limiting member (300).

3. The driving structure according to claim 1, characterized in that, The connecting part (310) includes a connecting strip (331) and an arc-shaped strip (332). One end of the connecting strip (331) is connected to the outer peripheral wall of the torque limiting member (300), and the other end of the connecting strip (331) is connected to the middle part of the arc-shaped strip (332). The center of the arc-shaped strip (332) is located on the axis of the torque limiting member (300), and both ends of the arc-shaped strip (332) are provided with the elastic protrusions (320).

4. The driving structure according to claim 1, characterized in that, The torque limiting member (300) is provided with a mounting hole (340), which extends axially and passes through the torque limiting member (300). The drive end (110) is inserted into the mounting hole (340) and is interference-fitted with the mounting hole (340).

5. The driving structure according to claim 4, characterized in that, The drive end (110) is a square column, and the mounting hole (340) is a square hole. The drive end (110) is inserted into the mounting hole (340) so that the drive end (110) and the torque limiting member (300) can rotate synchronously.

6. The driving structure according to claim 1, characterized in that, The axial direction of the torque limiting member (300) is the front-to-back direction. The outer peripheral wall of the torque limiting member (300) is provided with a limiting part (350). The limiting part (350) is located on the front side of the connecting part (310). The rear side of the limiting part (350) can abut against the front end face of the load connecting member (200).

7. The driving structure according to claim 6, characterized in that, The front end of the load connector (200) is recessed to form a groove (220), and the limiting part (350) is located in the groove (220).

8. The driving structure according to claim 6, characterized in that, The limiting portion (350) has a plurality of such portions, which are distributed circumferentially along the torque limiting member (300).

9. The driving structure according to claim 6, characterized in that, The limiting part (350) is provided with a through hole (360) that extends in the front-rear direction. The driving structure also includes a cap (400) that is inserted into the through hole (360) from back to front. The cap (410) of the cap (400) can abut against the rear end face of the load connector (200). The cap (400) and the limiting part (350) work together to restrict the load connector (200) from moving in the front-rear direction.

10. A trash can, characterized in that, include: A barrel body having an opening, and a flip-top rotatably connected to the barrel body; The driving structure according to any one of claims 1 to 9, wherein the driving structure is installed on the barrel body, and the driving structure is capable of driving the flip cover to rotate so that the flip cover seals or opens the opening.

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