Transmission mechanism and cleaning device

Abstract

The present application relates to the technical field of mechanical transmission, and provides a transmission mechanism, a cleaning device, a support frame assembly, a driving assembly and a telescopic rotating assembly.The support frame assembly comprises a first support platform; the driving assembly comprises a transmission shaft; the telescopic rotating assembly comprises a rotating piece, a gear and a limiting piece, and the rotating piece is matched with the limiting piece; wherein, when the transmission shaft of the driving assembly rotates around the shaft, the rotating piece moves linearly and rotates around the shaft under the limiting action of the limiting piece.The transmission mechanism has compact overall structure, simpler structure, higher reliability and lower failure rate through meshing transmission between the transmission shaft and the telescopic rotating assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission, and in particular to a transmission mechanism and a cleaning device having the transmission mechanism. Background Art

[0002] Telescopic devices are widely used in the mechanical industry. For example, they can be used in massage devices, cleaning devices, lifting devices, and transmission equipment.

[0003] Currently, pneumatic cylinders or hydraulic cylinders are commonly used to achieve telescopic motion or reciprocating linear motion. However, these cylinders are expensive and consume a lot of energy. In practical applications, some mechanisms use motors as drive sources and are equipped with relatively complex transmission mechanisms to convert rotational motion into linear motion, thereby achieving the telescopic function. However, these transmission mechanisms themselves have numerous components and complex connections between the components, making them prone to failure during operation and having low reliability. Furthermore, the complex transmission mechanism results in an overly large and loosely structured telescopic device, which significantly limits its application. Summary of the Invention

[0004] The purpose of the present invention is to provide a transmission mechanism, aiming to solve the problem that the existing transmission mechanism has low reliability and is prone to failure.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present application provides a transmission mechanism comprising:

[0007] a support frame assembly, the support frame assembly comprising a first support platform;

[0008] a drive assembly, the drive assembly comprising a transmission shaft rotatably connected to the first support platform;

[0009] a telescopic rotating assembly, the telescopic rotating assembly comprising a rotating member, a gear provided at one end of the rotating member and meshing with the transmission shaft, and a limiting member provided on the first support platform, the rotating member being passed through the first support platform and being rotatable relative to the first support platform about its own axis, the rotating member being adapted to the limiting member;

[0010] Wherein, when the transmission shaft of the driving assembly rotates around the axis, the rotating member moves linearly and rotates around the axis under the limiting action of the limiting member.

[0011] Beneficial effects of the present invention: In the transmission mechanism provided by the present invention, the support frame assembly plays a supporting and fixing role, which is specifically achieved through the provision of a first supporting platform. The driving assembly provides power. Specifically, the transmission shaft is rotatably connected to the first supporting platform and rotates around its own axis. Force is transmitted between the telescopic rotating assembly and the transmission shaft, ultimately achieving linear movement and rotation around the axis. Specifically, the gear is engaged with the transmission shaft to drive the rotating part to rotate around its own axis, and the limiting part located on the first supporting platform is adapted to the rotating part, thereby achieving linear movement of the rotating part in the axial direction and its own rotation around the axis. The overall structure of the transmission mechanism is compact and simpler, and the transmission between the transmission shaft and the telescopic rotating assembly is driven by meshing, which has higher reliability and can also reduce the failure rate.

[0012] In one embodiment, the rotating member is a first screw member, and the limiting member is placed in a sliding groove on the first screw member.

[0013] In one embodiment, the rotating member is a second screw rod member, and the second screw rod member is provided with a first sub-groove that spirally rises along the circumferential side wall of the second screw rod member and a second sub-groove that spirally descends along the circumferential side wall of the second screw rod member. The spiral direction of the first sub-groove is opposite to the spiral direction of the second sub-groove, and the head end of the first sub-groove is connected to the end of the second sub-groove, and the head end of the second sub-groove is connected to the end of the first sub-groove, and the limiting member is placed in the first sub-groove or the second sub-groove.

[0014] In one embodiment, the driving assembly includes a motor, and an output end of the motor is connected to the transmission shaft; or,

[0015] The driving assembly includes a motor and a reduction transmission mechanism connected to the output end of the motor, and the output end of the reduction transmission mechanism is connected to the transmission shaft;

[0016] In one embodiment, the motor is a unidirectional rotary motor.

[0017] In one embodiment, the limiting member includes a fixed portion provided on the first supporting platform and a slider portion rotatably connected to the fixed portion, and the slider portion is adapted to the rotating member;

[0018] The slider portion includes a rotating rod rotatably connected to the fixed portion and a slider head connected to the rotating rod. The slider head has a main body portion connected to the rotating rod and a guide portion formed by protruding outward from opposite sides of the main body portion. In addition, the width of the slider head decreases step by step from the main body portion to the guide portion.

[0019] In one embodiment, the second screw rod comprises a main rod body, a sub-rod body passing through the main rod body and extending to the outside, and a clutch mechanism provided on the sub-rod body and used for clutching the main rod body and the sub-rod body, the main rod body is provided with the first sub-groove and the second sub-groove, one end of the sub-rod body is connected to the gear, and the other end of the sub-rod body is passed through the first supporting platform;

[0020] Wherein, when the auxiliary rod body rotates in the positive direction around the axis under the belt of the gear, the clutch mechanism is connected to the main rod body and the auxiliary rod body, so that the main rod body and the auxiliary rod body move back and forth and rotate around the axis;

[0021] When the auxiliary rod body rotates around the axis in the opposite direction under the belt of the gear, the clutch mechanism is separated from the main rod body and the auxiliary rod body, so that the auxiliary rod body rotates around the axis relative to the main rod body.

[0022] In one embodiment, the clutch mechanism includes an elastic column provided on the auxiliary rod body and capable of extending and retracting in the radial direction of the auxiliary rod body, and a clutch ring body sleeved on the auxiliary rod body, wherein the inner wall of the clutch ring body is provided with a receiving groove, the receiving groove having an inlet end for the elastic column to slide into and a blocking end for blocking the elastic column, the inlet end and the blocking end being arranged opposite to each other;

[0023] When the auxiliary rod body rotates in the forward direction around the axis, the elastic column abuts against the blocking end, the auxiliary rod body is connected to the clutch ring body, and the clutch ring body abuts against the end of the main rod body to be connected to the main rod body;

[0024] When the auxiliary rod body rotates in the opposite direction around the axis, the elastic column escapes from the inlet end, the auxiliary rod body is separated from the clutch ring body, and the clutch ring body and the auxiliary rod body rotate relative to each other to release the contact with the main rod body.

[0025] In one embodiment, the support frame assembly also includes a second support platform spaced apart from the first support platform, at least two guide rods arranged between the first support platform and the second support platform, and a guide block sleeved on the guide rod and sliding along the axial direction of the guide rod, and the rotating member is rotatably connected to the guide block.

[0026] In a second aspect, the present application also provides a cleaning device, comprising an upper cover and the transmission mechanism described above, wherein the upper cover is a hollow structure and is used for allowing the rotating part of the transmission mechanism to extend therein; the upper cover is provided with an installation groove for limiting the limiting part of the transmission mechanism.

[0027] Beneficial effects of the present invention: The cleaning device provided by the present invention, based on the above-mentioned transmission mechanism, has higher reliability and lower failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic structural diagram of a transmission mechanism provided in Example 1 of the present invention;

[0030] Figure 2 An exploded view of the transmission mechanism provided in Example 1 of the present invention;

[0031] Figure 3 An exploded view of the telescopic rotating assembly of the transmission mechanism provided in the first embodiment of the present invention;

[0032] Figure 4 A schematic structural diagram of a slider head of a transmission mechanism provided in Embodiment 1 of the present invention;

[0033] Figure 5 A cross-sectional view of a transmission mechanism provided in Example 2 of the present invention;

[0034] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0035] Figure 7 This is a cross-sectional view of the clutch ring of the clutch mechanism of the transmission mechanism provided in Example 2 of the present invention.

[0036] Among them, the reference numerals in the figures are:

[0037] 100, transmission mechanism; 10, support frame assembly; 20, drive assembly; 30, telescopic rotation assembly; 12, first support platform; 11, second support platform; 13, guide rod; 14, guide block; 21, motor; 22, reduction transmission mechanism; 23, transmission shaft; 31, rotating member; 32, gear; 33, position limiting member; 30a1, first sub-slot; 30a2, second sub-slot; 331, fixing portion; 332, slider portion; 3321, rotating rod; 3322, slider head; 33a, main body; 33b, guide part; 33c, abutment surface; 311, main rod body; 312, auxiliary rod body; 313, clutch mechanism; 3131, elastic column; 3132, clutch ring body; 313a, accommodating groove; 313b, inlet end; 313c, blocking end; 40, upper cover; 41, mounting groove; 40a, open end; 40b, closed end; 42, mounting ear. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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, and therefore cannot be understood as limiting the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0041] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] Please refer to Figure 1 and Figure 2 The transmission mechanism 100 proposed in this application includes a support frame assembly 10, a drive assembly 20, and a telescopic rotation assembly 30. Among them, the support frame assembly 10 plays a supporting and fixing role. Specifically, the first support platform 12 provides support and fixing requirements for each component.

[0043] The drive assembly 20 primarily provides power output. As will be appreciated, the drive assembly 20 can rotate in either the forward or reverse direction to transmit power, and the output direction can be switched based on actual needs. Specifically, the drive shaft 23 of the drive assembly 20 is rotatably connected to the first support platform 12 via a bearing or directly connected to the first support platform 12 to achieve power transmission.

[0044] The telescopic rotation assembly 30 is a mechanism that achieves both linear extension and rotation. It comprises a rotating member 31, a gear 32, and a stopper 33. The rotating member 31 is capable of linear movement relative to the first support platform 12. Depending on actual use, the rotating member 31 can extend beyond the first support platform 12. Specifically, an opening can be provided in the second support platform 11 for the rotating member 31 to extend. The gear 32 engages with the drive shaft 23, transmitting the output power of the drive shaft 23 to the rotating member 31. The stopper 33 interacts with the rotating member 31 to enable the rotating member 31, which rotates about its axis, to achieve telescopic movement along its own axis. Specifically, the stopper 33 is fixed and mounted on the first support platform 12. Specifically, the rotating member 31 and the stopper 33 engage via a slotted shaft. Specifically, corresponding slots are provided in the rotating member 31, within which the stopper 33 slides, thereby converting the rotating member 31's axial rotation into linear movement.

[0045] The transmission mechanism 100 provided by the present invention, the support frame assembly 100 plays a supporting and fixing role, which is specifically achieved by the provision of the first support platform 12. The driving assembly 20 provides power. Specifically, the transmission shaft 23 is rotatably connected to the first support platform 12 and rotates around its own axis. Force is transmitted between the telescopic rotating assembly 30 and the transmission shaft 23, ultimately achieving linear movement and rotation around the axis. Specifically, the gear 32 is engaged with the transmission shaft 23 to drive the rotating member to rotate around its own axis, and the limiting member 33 located on the first support platform 12 is adapted to the rotating member 31, thereby achieving linear movement of the rotating member 31 in the axial direction and its own rotation around the axis. The overall structure of the transmission mechanism 100 is compact and simpler, and the transmission between the transmission shaft 23 and the telescopic rotating assembly 30 is through meshing transmission, which has higher reliability and can also reduce the failure rate.

[0046] Specifically, in one embodiment, the rotating member 31 is a first screw member, and the limiting member 33 is placed in a slot on the first screw member. Here, the rotating member 31 is a conventional first screw member. The first screw member and the limiting member 33 form a screw assembly. When the output drive shaft outputs power, the limiting member 33 remains fixed, while the gear 32 on the first screw member engages with the drive shaft 23 and moves linearly along its own axial direction.

[0047] Please refer to Figures 1 to 3In another embodiment, the rotating member 31 is a second screw member, that is, under the action of the limit member 33, the second screw member can perform reciprocating linear motion along the axial direction. Specifically, the second screw member is provided with a first sub-groove 30a1 that spirally rises along the circumferential side wall of the second screw member and a second sub-groove 30a2 that spirally descends along the circumferential side wall of the second screw member. Here, the spiral direction of the first sub-groove 30a1 is opposite to the spiral direction of the second sub-groove 30a2. It can be understood that when the limit member 33 is adapted to the first sub-groove 30a1, the second screw member rotates clockwise around the axis; and when the limit member 33 is adapted to the second sub-groove 30a2, the second screw member rotates counterclockwise around the axis. In addition, the head end of the first sub-groove 30a1 is connected to the end of the second sub-groove 30a2, and the head end of the second sub-groove 30a2 is connected to the end of the first sub-groove 30a1. It can be understood that in the initial state, the limit member 33 is in the first sub-groove 30a1, and, under the interaction with the groove wall of the first sub-groove 30a1, the second screw rod member extends outward in the axial direction, that is, moves toward the first support platform 12, until the limit member 33 moves to the end of the first sub-groove 30a1. Since the head end of the second sub-groove 30a2 is connected to the end of the first sub-groove 30a1, when the second screw rod member continues to rotate around the axis, the limit member 33 slides into the second sub-groove 30a2. Since the spiral direction of the second sub-groove 30a2 is opposite to the spiral direction of the first sub-groove 30a1, then, when the second screw rod member moves away from the first support platform 12 in the axial direction until the limit member 33 moves to the end of the second sub-groove 30a2, since the end of the second sub-groove 30a2 is connected to the head end of the first sub-groove 30a1, the second screw rod member is replaced and moves toward the first support platform 12. In summary, when the limiting member 33 is adapted to the first sub-groove 30a1 and the second sub-groove 30a2, the second screw rod moves back and forth linearly, and during the whole process, the direction of rotation of the second screw rod around the axis does not change.

[0048] It should be noted that there is a smooth transition between the end of the first sub-groove 30a1 and the beginning of the second sub-groove 30a2, and a smooth transition between the end of the second sub-groove 30a2 and the beginning of the first sub-groove 30a1. In this way, the stopper 33 can smoothly switch between the first sub-groove 30a1 and the second sub-groove 30a2, avoiding any jamming.

[0049] Preferably, please refer to Figure 3 The first sub-groove 30a1 intersects with the second sub-groove 30a2 as it spirals upward along the circumferential sidewall of the second screw member, and there are multiple intersecting positions. This allows the limiting member 33 to slide more smoothly within the first sub-groove 30a1 or the second sub-groove 30a2. Of course, depending on actual practical needs, the first sub-groove 30a1 and the second sub-groove 30a2 may not intersect or overlap.

[0050] Please refer to Figure 1 and Figure 2 In one embodiment, the driving assembly 20 includes a motor 21, and the output end of the motor 21 is connected to the transmission shaft 23. Here, the motor 21 is used as the power for the transmission shaft 23 to rotate around the axis.

[0051] Alternatively, please refer to Figure 1 and Figure 2 In one embodiment, the drive assembly 20 includes a motor 21 and a reduction transmission mechanism 22 connected to the output end of the motor 21. The output end of the motor 21 is connected to a transmission shaft 23 via the reduction transmission mechanism 22. Here, in order to reduce the output speed of the motor 21, a reduction transmission mechanism 22 can be added to the output end of the motor 21, thereby reducing the speed of the motor 21 output to the transmission shaft 23.

[0052] For example, the reduction transmission mechanism 22 may be composed of multiple groups of reduction gears that are meshed and transmitted. At the same time, the number of reduction gears may be increased according to actual transmission ratio requirements.

[0053] In one embodiment, the motor 21 is a unidirectional rotating motor. That is, the motor 21 drives the transmission shaft 23 to rotate unidirectionally around the axis. It can be understood that the output end of the motor 21 in this embodiment can only rotate unidirectionally to achieve power output. In this way, the motor 21 has more types to choose from, and the usage requirements are also lower, which can also extend its service life. In addition, the rotational movement around the axis and the reciprocating linear movement of the rotating member 31 are both completed under the power output of the unidirectional rotation of the motor 21, that is, there is no need to frequently change the direction of the input voltage of the drive component 20, thereby ensuring the service life of the motor 21. At the same time, it can also reduce the jamming and collision between the mechanisms caused by the reversing of the power output, which is also a great help to improve the service life of other components.

[0054] For example, when the rotating member 31 is a first screw member, the motor 21 drives the transmission shaft 23 to rotate unidirectionally around the axis. At this time, the first screw member can only complete linear motion extending out of the first support platform 12 under the limiting action of the limiting member 33.

[0055] For another example, when the rotating member 31 is a second screw member, the motor 21 drives the transmission shaft 23 to rotate unidirectionally around the axis. At this time, the second screw member can perform a reciprocating linear motion of extending or retracting under the limiting action of the limiting member 33.

[0056] Alternatively, in another embodiment, the motor 21 drives the transmission shaft 23 to rotate bidirectionally about the axis. It is understood that the motor 21 can change the direction of rotation of the output power. That is, the reciprocating linear motion of the rotating member 31 is achieved by reversing the output power of the motor 21 itself.

[0057] Please refer to Figures 2 to 3In one embodiment, the stopper 33 includes a fixed portion 331 disposed on the first support platform 12 and a slider portion 332 rotatably connected to the fixed portion 331. The slider portion 332 is disposed within the first sub-slot 30a1 and the second sub-slot 30a2. It can be understood that the fixed portion 331 is the fixed portion, while the slider portion 332 is the rotating portion. That is, during the rotation of the rotating member 31 about its axis, the slider portion 332 interacts with the sidewalls of the first sub-slot 30a1 and the second sub-slot 30a2. When the rotating member 31 reverses its direction of extension and retraction, the slider portion 332 rotates around the fixed portion 331 to meet the requirements of the reversal of the rotation of the rotating member 31.

[0058] Specifically, please refer to Figure 3 and Figure 4 The slider portion 332 includes a rotating rod 3321 rotatably connected to the fixed portion 331 and a slider head 3322 connected to the rotating rod 3321. As can be understood, the rotating rod 3321 rotates about its own axis relative to the fixed portion 331, while the slider head 3322 rotates along with the rotating rod 3321. Here, the slider head 3322 is positioned within the first and second sub-slots 30a1, 30a2, and directly interacts with the inner walls of the first and second sub-slots 30a1, 30a2. For example, the slider head 3322 includes a main body 33a connected to the rotating rod 3321 and guide portions 33b extending outward from opposite sides of the main body 33a. The main body 33a serves as a connection to the rotating rod 3321, while the guide portions 33b directly contact the inner walls of the first and second sub-slots 30a1, 30a2. In addition, the width of the entire slider head 3322 is gradually increased from the main body 33a to the guide portion 33b, so that the side wall of the guide portion 33b has a smaller contact angle with the inner wall of the first sub-groove 30a1 and the second sub-groove 30a2, especially when the rotating member 31 needs to perform telescopic reversing, the narrow-side guide portion 33b can more smoothly pass through the reversing position of the first sub-groove 30a1 and the second sub-groove 30a2, that is, the position where the first sub-groove 30a1 and the second sub-groove 30a2 smoothly transition.

[0059] Alternatively, as Figure 4As shown, the guide portions 33b on both sides of the main body portion 33a are bent towards the same side, and the main body portion 33a and the two guide portions 33b each have an abutting surface 33c abutting against the bottom of the first sub-groove 30a1 and the second sub-groove 30a2. Understandably, the curvature of the abutting surface 33c of the slider head 3322 is adapted to the curvature of the bottom of the first sub-groove 30a1 and the second sub-groove 30a2, i.e., the slider head 3322 is always sliding on the arc-shaped bottom of the first sub-groove 30a1 and the second sub-groove 30a2, which is always sliding friction. At the same time, further, in order to reduce the friction therebetween, the contact area between the abutting surface 33c of the slider head 3322 and the bottom of the first sub-groove 30a1 and the second sub-groove 30a2 is reduced, i.e., the area of the abutting surface 33c is reduced, and then the thickness of the slider head 3322 gradually decreases in the direction towards the bottom of the first sub-groove 30a1 and the second sub-groove 30a2. In terms of shape, the slider head 3322 is crescent-shaped, and the abutting surface 33c can gradually decrease, and finally the slider head 3322 is in line contact with the bottom of the first sub-groove 30a1 and the second sub-groove 30a2.

[0060] Please refer to Figure 2 and Figure 3 In one embodiment, the second screw member includes a main rod body 311 and a secondary rod body 312 penetrating through the main rod body 311 and extending to the outside, and the secondary rod body 312 is fixedly connected to the main rod body 311, i.e., the secondary rod body 312 rotates together with the main rod body 311 around the shaft. The main rod body 311 is provided with a first sub-groove 30a1 and a second sub-groove 30a2, one end of the secondary rod body 312 penetrates through the guide block 14 and is connected to the gear 32, and the other end of the secondary rod body 312 penetrates through the first support platform 12. Understandably, the main rod body 311 is adapted to the limiting member 33, and finally realizes rotation around the shaft itself, and the rod body 3321 rotating together with the main rod body 311 around the shaft can be connected to an external structure to achieve the corresponding functional purpose.

[0061] Please refer to Figure 5 and Figure 6In another embodiment, the second screw member includes a main rod 311, a secondary rod 312 extending through the main rod 311, and a clutch mechanism 313 provided on the secondary rod 312 for clutching the main rod 311 and the secondary rod 312. The main rod 311 is provided with a first sub-groove 30a1 and a second sub-groove 30a2. One end of the secondary rod 312 is connected to the gear 32, and the other end of the secondary rod 312 is passed through the first support platform 12. It can be understood that in this embodiment, the main rod 311 and the secondary rod 312 are selectively connected via the clutch mechanism 313. For example, when the clutch mechanism 313 is in a working state, the main rod 311 and the auxiliary rod 312 are in a connected state, and at this time, the main rod 311 and the auxiliary rod 312 move together; when the clutch mechanism 313 is in a non-working state, the main rod 311 and the auxiliary rod 312 are separated, and at this time, only the auxiliary rod 312 is moving.

[0062] Specifically, when the auxiliary rod body 312 rotates forwardly around the axis under the belt of the gear 32, the clutch mechanism 313 is connected to the main rod body 311 and the auxiliary rod body 312, so that the main rod body 311 and the auxiliary rod body 312 move back and forth and rotate around the axis in the arrangement direction of the second support platform 11 and the first support platform 12.

[0063] When the auxiliary rod 312 rotates in the opposite direction under the belt of the gear 32, the clutch mechanism 313 separates from the main rod 311 and the auxiliary rod 312, so that the auxiliary rod 312 rotates relative to the main rod 311. In other words, the auxiliary rod 312 only rotates around the axis and does not reciprocate between the second support platform 11 and the first support platform 12.

[0064] Specifically, please refer to Figures 5 to 7 The clutch mechanism 313 includes an elastic column 3131 mounted on the secondary rod 312 and capable of extending and contracting radially along the secondary rod 312, and a clutch ring 3132 sleeved on the secondary rod 312. The clutch ring 3132 has an inner wall defining a receiving groove 313a. The groove 313a includes an entry end 313b for the elastic column 3131 to slide into, and a blocking end 313c for blocking the elastic column 3131. The entry end 313b and the blocking end 313c are disposed opposite each other. The elastic column 3131 rotates about its axis along with the secondary rod 312.

[0065] When the elastic column 3131 rotates around the axis, the clutch ring body 3132 slides in the receiving groove 313a, and drives the clutch ring body 3132 to rotate around the axis by abutting against the blocking end 313c. In addition, the clutch ring body 3132 abuts against the end of the main rod body 311, thereby realizing the auxiliary rod body 312 and the main rod body 311 to rotate around the axis together through the abutment effect.

[0066] For example, when the secondary rod 312 rotates in the forward direction, the elastic column 3131 enters through the inlet end 313b and slides within the receiving groove 313a until it abuts the blocking end 313c. Thus, the secondary rod 312 is connected to the clutch ring 3132 through their abutment, and the clutch ring 3132 rotates along with the secondary rod 312. Simultaneously, after rotating along with the secondary rod 312, the clutch ring 3132 abuts against the end of the main rod 311. At this point, one end of the main rod 311 abuts the gear and the other end abuts the clutch ring 3132, thereby connecting the main rod 311. Preferably, the main rod 311 rotates along with the secondary rod 312. Because the main rod 311 is adapted to the stopper 33, the secondary rod 312 simultaneously rotates along its axis and performs reciprocating linear motion along its own axial direction.

[0067] Alternatively, during the axial rotation of the elastic post 3131, the elastic post 3131 slides within the receiving groove 313a of the clutch ring 3132 and slides out from the entrance end 313b. In this way, relative sliding always occurs between the clutch ring 3132 and the auxiliary rod 312, and the clutch ring 3132 does not abut the end of the main rod 311. Thus, the main rod 311 does not rotate with the auxiliary rod 312.

[0068] For example, when the secondary rod 312 rotates in the opposite direction, the elastic column 3131 slides within the receiving groove 313a, exits through the entrance end 313b, and enters through the blocking end 313c, causing relative sliding between the elastic column 3131 and the clutch ring 3132. This then causes the secondary rod 312 and the clutch ring 3132 to separate, and the clutch ring 3132 and the secondary rod 312 to rotate relative to each other, releasing the contact with the main rod 311. At this point, the main rod 311 no longer rotates along with the secondary rod 312. Ultimately, the secondary rod 312 only rotates about its axis.

[0069] Preferably, there are two elastic columns 3131, symmetrically arranged on the secondary rod body 312 about the central axis of the secondary rod body 312. Furthermore, the clutch ring body 3132 is provided with two receiving grooves 313a, and the extending direction of each receiving groove 313a is the same as the rotation direction of the secondary rod body 312. That is, the entrance end 313b of one receiving groove 313a corresponds to the blocking end 313c of the other receiving groove 313a, and the blocking end 313c of one receiving groove 313a corresponds to the entrance end 313b of the other receiving groove 313a. In this way, the secondary rod body 312 can be connected to the clutch ring body 3132 with fewer rotations or angles, thereby improving the connection efficiency with the clutch ring body 3132. Furthermore, the symmetrical arrangement of the elastic columns 3131 also ensures balanced force on the clutch ring body 3132 during the clutching process.

[0070] It should be noted that the direction in which the secondary rod 312 rotates about its axis to engage or disengage the clutch mechanism 313 is adjustable. For example, when the secondary rod 312 rotates in the reverse direction, the clutch mechanism 313 is in an active state, connecting the secondary rod 312 to the main rod 311. Conversely, when the secondary rod 312 rotates in the forward direction, the clutch mechanism 313 is in an inactive state, separating the secondary rod 312 from the main rod 311.

[0071] Please refer to Figure 1 and Figure 2 In one embodiment, the support frame assembly 10 further includes a second support platform 11 spaced apart from the first support platform 12, at least two guide rods 13 disposed between the second support platform 11 and the first support platform 12, and guide blocks 14 sleeved on the guide rods 13 and sliding along the axial direction of the guide rods 13. The rotating member 31 is rotatably connected to the guide blocks 14. The drive assembly 20 can be mounted on the second support platform 11, and the first support platform 12 and the first support platform 11 provide stable support for the drive shaft 23. It can be understood that the guide blocks 14 slide along the axial direction of the guide rods 13 to guide the telescopic movement of the rotating member 31, thereby preventing the rotating member 31 from deviating during the telescopic movement. Specifically, the axial directions of the two guide rods 13 are parallel to the axial direction of the drive shaft 23, thereby ensuring that the rotating member 31 can telescopically reciprocate in a direction parallel to the axial direction of the drive shaft 23. To prevent the guide blocks 14 from deviating, at least two guide rods 13 are provided to limit the freedom of the guide blocks 14 in the radial direction of the guide rods 13. At the same time, the rotating member 31 needs to be able to rotate about the axis relative to the guide block 14, that is, the two are not fixedly connected. Preferably, a bearing can be provided on the rotating member 31. In this way, the guide block 14 can move along the axial direction of the guide rod 13 without limiting the rotation of the rotating member 31 about the axis.

[0072] It should be noted that the second support platform 11 can maintain a distance from the first support platform 12 through the guide rods 13. Of course, additional support rod structures can also be provided to maintain the spacing relationship between the two.

[0073] The present application also provides a cleaning device, comprising an upper cover and the above-mentioned transmission mechanism 100 .

[0074] Please refer to Figure 1 and Figure 2The upper cover 40 is hollow and is used to insert the rotating member 31. The upper cover 40 defines a mounting slot 41 for limiting the fixed portion 331 of the transmission mechanism 100. As can be understood, the upper cover 40 is a cover-like structure that, together with the first support platform 12, forms a space for accommodating the rotating member 31. Simultaneously, the mounting slot 41 on the upper cover 40 limits and secures the fixed portion 311, facilitating assembly and disassembly. Specifically, when the rotating member 31 requires a larger working stroke, it passes through the first support platform 12 and extends into the upper cover 40. Specifically, the main rod 311 of the rotating member 31 extends into the upper cover 40 to protect it during rotation. The secondary rod 312 extends outside the upper cover 40 and connects to the external structure. This further limits the secondary rod 312, ensuring its freedom of movement along its own axial direction.

[0075] For example, the upper cover 40 includes a cover body having an open end 40a and a closed end 40b. The edge of the open end 40a of the cover body extends horizontally outward to form a mounting ear 42, which is connected to the first support platform 12 via screws passing through the mounting ear 42. The auxiliary rod 312 of the rotating member 31 is extended through the closed end 40b to the outside, that is, the closed end 40b is used to limit the auxiliary rod 312, so that the auxiliary rod 312 has freedom of movement along its own axial direction.

[0076] It can be understood that the cleaning device needs to perform corresponding cleaning actions through the telescopic reciprocating motion and axial rotation motion of the transmission mechanism 100. For example, the cleaning device can be an ear care product, which performs massage care on the ear canal through the telescopic reciprocating motion and axial rotation motion provided by the transmission mechanism 100.

[0077] The cleaning device provided by the present invention, based on the transmission mechanism 100, has higher reliability and lower failure rate.

[0078] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transmission mechanism, characterized in that: The transmission mechanism comprises: a support frame assembly, the support frame assembly comprising a first support platform; a drive assembly, the drive assembly comprising a transmission shaft rotatably connected to the first support platform; a telescopic rotating assembly, the telescopic rotating assembly comprising a rotating member, a gear provided at one end of the rotating member and meshing with the transmission shaft, and a limiting member provided on the first support platform, the rotating member being passed through the first support platform and being rotatable relative to the first support platform about its own axis, the rotating member being adapted to the limiting member; Wherein, when the transmission shaft of the driving assembly rotates around the axis, the rotating member moves linearly and rotates around the axis under the limiting action of the limiting member; The rotating member is a second screw member, and the second screw member is provided with a first sub-groove spirally ascending along the circumferential side wall of the second screw member and a second sub-groove spirally descending along the circumferential side wall of the second screw member; The second screw rod comprises a main rod body, a sub-rod body passing through the main rod body and extending to the outside, and a clutch mechanism provided on the sub-rod body and used for clutching the main rod body and the sub-rod body, the main rod body is provided with the first sub-groove and the second sub-groove, one end of the sub-rod body is connected to the gear, and the other end of the sub-rod body is passed through the first supporting platform; When the auxiliary rod body rotates in the positive direction around the axis driven by the gear, the clutch mechanism is connected to the main rod body and the auxiliary rod body, so that the main rod body and the auxiliary rod body move back and forth and rotate around the axis; When the auxiliary rod body rotates around the axis in the opposite direction driven by the gear, the clutch mechanism is separated from the main rod body and the auxiliary rod body, so that the auxiliary rod body rotates around the axis relative to the main rod body.

2. The transmission mechanism according to claim 1, wherein: The spiral direction of the first sub-groove is opposite to the spiral direction of the second sub-groove, and the head end of the first sub-groove is connected to the end of the second sub-groove, and the head end of the second sub-groove is connected to the end of the first sub-groove, and the limiting member is placed in the first sub-groove or the second sub-groove.

3. The transmission mechanism according to claim 2, wherein: The driving assembly includes a motor, and the output end of the motor is connected to the transmission shaft; or, The driving assembly includes a motor and a reduction transmission mechanism connected to an output end of the motor, and the output end of the reduction transmission mechanism is connected to the transmission shaft.

4. The transmission mechanism according to claim 3, characterized in that: The motor is a unidirectional rotating motor.

5. The transmission mechanism according to claim 1 or 2, characterized in that: The limiting member includes a fixed portion provided on the first supporting platform and a slider portion rotatably connected to the fixed portion, wherein the slider portion is adapted to the rotating member; The slider portion includes a rotating rod rotatably connected to the fixed portion and a slider head connected to the rotating rod. The slider head has a main body portion connected to the rotating rod and a guide portion formed by protruding outward from opposite sides of the main body portion. In addition, the width of the slider head decreases step by step from the main body portion to the guide portion.

6. The transmission mechanism according to claim 1, wherein: The clutch mechanism includes an elastic column provided on the auxiliary rod body and capable of extending and retracting in the radial direction of the auxiliary rod body, and a clutch ring body sleeved on the auxiliary rod body, wherein the inner wall of the clutch ring body is provided with a receiving groove, the receiving groove having an inlet end for the elastic column to slide into and a blocking end for blocking the elastic column, the inlet end and the blocking end being arranged opposite to each other; When the auxiliary rod body rotates in the forward direction around the axis, the elastic column abuts against the blocking end, the auxiliary rod body is connected to the clutch ring body, and the clutch ring body abuts against the end of the main rod body to be connected to the main rod body; When the auxiliary rod body rotates in the opposite direction around the axis, the elastic column escapes from the inlet end, the auxiliary rod body is separated from the clutch ring body, and the clutch ring body and the auxiliary rod body rotate relative to each other to release the contact with the main rod body.

7. The transmission mechanism according to claim 1, characterized in that: The support frame assembly also includes a second support platform spaced apart from the first support platform, at least two guide rods arranged between the first support platform and the second support platform, and a guide block sleeved on the guide rod and sliding along the axial direction of the guide rod, and the rotating member is rotatably connected to the guide block.

8. A cleaning device comprising an upper cover, characterized in that: It comprises the transmission mechanism according to any one of claims 1 to 7, wherein the upper cover is a hollow structure and is used for allowing the rotating part of the transmission mechanism to extend therein; the upper cover is provided with a mounting groove for limiting the limiting part of the transmission mechanism.

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