Transmission mechanism and cleaning equipment

Abstract

This invention relates to the field of transmission technology, specifically disclosing a transmission mechanism and cleaning device, including a transmission shaft; two input bevel gears spaced apart on the transmission shaft; an output bevel gear meshing between the two bevel gears; and a reversing slider located between the two input bevel gears. The transmission shaft rotates in different directions, causing the reversing slider to be connected to different input bevel gears, thereby enabling both input bevel gears to drive the output bevel gear to rotate in the same direction under the action of the reversing slider. The transmission mechanism of this application uses two input bevel gears with identical shapes and structures, and the reversing slider does not interfere with the other input bevel gear when driving one of the input bevel gears to rotate, achieving the goals of simplifying the structure, reducing the number of parts, and avoiding wear between parts.

Description

Technical Field

[0001] This invention relates to the field of transmission technology, and specifically discloses a transmission mechanism and a cleaning device. Background Technology

[0002] The existing bidirectional input and unidirectional output devices have complex structures and use various bevel gears of different shapes and sizes. During the use of the device, friction will always occur between the bevel gears, and wear will occur after long-term use. Summary of the Invention

[0003] The main objective of this invention is to provide a transmission mechanism and a cleaning device that are simple in structure, reduce the number of parts, and avoid wear between parts.

[0004] To achieve the above objectives, a first aspect of the present invention provides a transmission mechanism, comprising:

[0005] transmission shaft;

[0006] Two input bevel gears are spaced apart on the drive shaft;

[0007] The output bevel gear meshes between the two input bevel gears;

[0008] A reversing slider is coaxially disposed on the transmission shaft with the two input bevel gears, and the reversing slider is located between the two input bevel gears. The reversing slider is connected to one of the two input bevel gears in a transmission connection.

[0009] The transmission shaft is driven by a first steering direction, and one of the input bevel gears drives the output bevel gear to rotate in a second steering direction under the action of the reversing slider;

[0010] The drive shaft is driven by a third steering mechanism, and another input bevel gear drives the output bevel gear to rotate in a second steering direction under the action of the reversing slider. The first and third steering directions are opposite, and the second steering direction is perpendicular to the first and third steering directions.

[0011] A second aspect of the invention provides a cleaning device including a cutting assembly and a transmission mechanism as described above, the transmission mechanism being connected to the cutting assembly for driving the cutting assembly to perform a cutting motion.

[0012] In addition, the transmission mechanism of the present invention may also have the following additional technical features.

[0013] According to one embodiment of the present invention, one end face of the input bevel gear is provided with a plurality of first snap-fit ​​structures, and two adjacent first snap-fit ​​structures are connected by a first transmission surface, which can apply an axial thrust to the reversing slider.

[0014] The reversing slider has multiple second snap-fit ​​structures on its opposite end faces. The second snap-fit ​​structures are adapted to the first snap-fit ​​structure, and two adjacent second snap-fit ​​structures are connected by a second transmission surface.

[0015] According to one embodiment of the present invention, at least two first transmission surfaces are provided on the same end face of the input bevel gear, the first snap-fit ​​structure has a third transmission surface, and the first transmission surfaces and the third transmission surfaces are distributed at intervals on the same end face of the input bevel gear;

[0016] At least two second transmission surfaces are provided on the same end face of the reversing slider. The second snap-fit ​​structure has a fourth transmission surface. The fourth transmission surface is in contact with the third transmission surface to drive the input bevel gear to rotate. The second transmission surface and the fourth transmission surface are distributed at intervals on the same end face of the reversing slider.

[0017] According to one embodiment of the present invention, the first transmission surface and the second transmission surface are sloping surfaces, and the inclination directions of two adjacent first transmission surfaces are opposite, and the inclination directions of two adjacent second transmission surfaces on the same end face of the reversing slider are opposite.

[0018] According to one embodiment of the present invention, the ramp surface, the third transmission surface, and the fourth transmission surface are all planar, and the extending directions of the third transmission surface and the fourth transmission surface are parallel to or coincide with the axial direction of the transmission shaft.

[0019] According to one embodiment of the present invention, a plane perpendicular to the axis of the transmission shaft is defined as a projection plane. The projection of the positive normals of all points on the third transmission surface of one of the input bevel gears onto the projection plane points to a first direction of rotation, and the projection of the positive normals of all points on the third transmission surface of the other input bevel gear onto the projection plane points to the third direction of rotation. According to one embodiment of the present invention, the maximum angle formed between the normals of all points on the first transmission surface and the axis of the transmission shaft is defined as a first angle, and the minimum angle formed between the normals of all points on the third transmission surface and the axis of the transmission shaft is defined as a second angle, wherein the first angle is smaller than the second angle.

[0020] According to one embodiment of the present invention, the projection of the positive normal direction of all points on the second transmission surface of one end face of the reversing slider onto the projection plane points to the first direction, and the projection of the positive normal direction of all points on the fourth transmission surface onto the projection plane points to the third direction.

[0021] The projection of the positive normals of all points on the second transmission surface of the other end face of the reversing slider onto the projection plane points to the third steering direction, and the projection of the positive normals of all points on the fourth transmission surface onto the projection plane points to the first steering direction.

[0022] According to one embodiment of the present invention, the maximum distance between any two points on the opposite end faces of the reversing slider in the axial direction of the transmission shaft is L1, and the minimum distance between any two points on the end faces of the two input bevel gears in the axial direction of the transmission shaft is L2, wherein L1>L2.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The transmission mechanism of this application uses two input bevel gears with identical shapes and structures. At the same time, when the reversing slider drives one of the input bevel gears to rotate, it does not interfere with the other input bevel gear, thus achieving the purpose of simplifying the structure, reducing the types of parts, and avoiding wear between parts. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a perspective view of a cleaning device according to one embodiment of the present invention;

[0027] Figure 2 yes Figure 1 perspective Figure 1 ;

[0028] Figure 3 yes Figure 1 perspective Figure 2 ;

[0029] Figure 4 yes Figure 3 Schematic diagram of the combined structure of the cutting device and the rotating cleaning head;

[0030] Figure 5 yes Figure 4 A schematic diagram of the structure after removing non-electrically driven components;

[0031] Figure 6 yes Figure 5 Schematic diagram of the transmission mechanism;

[0032] Figure 7 yes Figure 6 Explosion of the central transmission mechanism Figure 1 ;

[0033] Figure 8 yes Figure 6 Explosion of the central transmission mechanism Figure 2 ;

[0034] Figure 9 yes Figure 7 A 3D view of the right and middle gears;

[0035] Figure 10 yes Figure 7 A 3D view of the left and right gears;

[0036] Figure 11 yes Figure 7 A 3D view of the reversing slider;

[0037] Figure 12 yes Figure 11 Cross-sectional view of the reversing slider;

[0038] Figure 13 An explosion of the transmission mechanism in one embodiment of the present invention Figure 1 ;

[0039] Figure 14 An explosion of the transmission mechanism in one embodiment of the present invention Figure 2 ;

[0040] Figure 15 yes Figure 14 Cross-sectional view of the reversing slider.

[0041] Figure label:

[0042] Cleaning equipment 100, housing 10, rotating cleaning head 11, cutting assembly 12, non-electric drive component 13, drive shaft 14, second spiral groove 140, circumferential limiting rib 141, input bevel gear 15, first snap-fit ​​structure 150, first transmission surface 151, third transmission surface 152, output bevel gear 16, reversing slider 17, first spiral groove 180, second snap-fit ​​structure 170, second transmission surface 171, protrusion 172, fourth transmission surface 173, circumferential limiting groove 174, output shaft 18, gear 19, drive belt 20.

[0043] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0046] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0049] The following reference Figure 1-15 Cleaning apparatus 100 is described in some embodiments of the present invention.

[0050] like Figure 1-3As shown, an embodiment of the present invention provides a cleaning device 100, which may be a handheld floor scrubber, a mopping robot, or a sweeping robot. The cleaning device 100 includes a housing 10, a rotating cleaning head 11, and a cutting device. The cutting device includes a cutting assembly 12, a non-electric drive component 13, and a transmission mechanism. The cutting assembly 12 includes a rotating shaft 120 and a cutting blade 121 disposed on the rotating shaft 120. The cutting blade 120 on the cutting assembly 12 contacts the outer peripheral surface of the rotating cleaning head 11. The transmission mechanism is connected to the non-electric drive component 13 and the cutting assembly 12. The transmission mechanism drives the cutting assembly 12 to perform cutting motion under the drive of the non-electric drive component 13.

[0051] When the rotating cleaning head 11 is used for surface cleaning, long fibers such as hair may become entangled on the surface being cleaned, affecting the cleaning effect of the rotating cleaning head 11 on the ground. Furthermore, cleaning the hair entangled on the rotating cleaning head 11 is also quite cumbersome for the user. However, when a cutting device is added, the transmission mechanism, driven by the non-electric drive component 13, drives the cutting component 12 to perform a cutting motion, which can cut the hair entangled on the rotating cleaning head 11.

[0052] It should be noted that the "non-electric drive component 13" mentioned in this application refers to a drive method other than electric drive, such as a foot pedal, manual drive, or other human-powered drive. Specifically, the non-electric drive component 13 in this embodiment can be selected from the moving wheels of the cleaning device 100. That is to say, during the user's use of the cleaning device 100, the cleaning device 100 will move forward or backward under the action of the moving wheels. In this process, this application uses the rotation of the moving wheels as the driving force source of the cutting device, using the rotation of the moving wheels themselves to drive the transmission mechanism, thereby driving the cutting component 12 to perform cutting motion.

[0053] Further, continuing with reference to 4, the cutting device includes at least one non-electric drive element 13. Specifically, the cutting device in this embodiment uses one non-electric drive element 13 to drive the transmission mechanism, that is, the transmission mechanism is driven by one moving wheel on the cleaning device 100. Of course, two non-electric drive elements 13 can also be used to drive the transmission mechanism, and the two non-electric drive elements 13 drive the transmission mechanism synchronously, that is, the transmission mechanism is driven synchronously by two moving wheels on the cleaning device 100. In the following, this embodiment will be described in detail with a single non-electric drive element 13 driving the transmission mechanism.

[0054] In this embodiment, the transmission mechanism can be a bidirectional input and unidirectional input mechanism. Specifically, the non-electric drive component 13 has a first steering direction and a third steering direction, which are opposite in direction. The non-electric drive component 13 drives the transmission mechanism with the first steering direction or the third steering direction, and the transmission mechanism can output a constant rotation direction to drive the cutting component 12. That is, when the user uses the cleaning device 100, the cleaning device 100 will move forward or backward with the non-electric drive component 13 under the user's push. At this time, the non-electric drive component 13 will roll in the first steering direction (defined as clockwise for ease of understanding) or the third steering direction (defined as counterclockwise for ease of understanding). The first steering direction and the third steering direction belong to the same dimension of rotation. Regardless of the driving direction of the non-electric drive component 13, the transmission mechanism of this embodiment can drive the cutting component 12 with a constant second steering direction. It should be noted that the third steering direction rotates in a dimension perpendicular to the first steering direction and the third steering direction, and the third steering direction rotates clockwise in a dimension perpendicular to the first steering direction and the third steering direction.

[0055] Continue to refer to Figure 4-8 In this embodiment, the transmission mechanism includes: a transmission shaft 14, two input bevel gears 15, an output bevel gear 16, a reversing slider 17, an output shaft 18, a gear 19, and a transmission belt 20. The transmission shaft 14 is connected to the output end of the non-electrically driven component 13. The two input bevel gears 15 are spaced apart on the transmission shaft 14. The output bevel gear 16 meshes between the two input bevel gears 15 and is connected to the rotating shaft 120 of the cutting assembly 12. The reversing slider 17 is cylindrical and coaxially arranged on the transmission shaft 14 with the two input bevel gears 15, with the reversing slider 17 located between the two input bevel gears 15. The output shaft 18 is connected to the output end of the output bevel gear 16. The gear 19 is threadedly engaged with the output shaft 18. One end of the transmission belt 20 is connected to the output end of the gear 19, and the other end is connected to the rotating shaft 120.

[0056] For ease of description, please continue to refer to... Figure 7 Based on the orientation of the input bevel gear 15 and the non-electric drive unit 13, the input bevel gear 15 located to the left of the non-electric drive unit 13 is defined as the left gear, and the input bevel gear 15 located to the left of the non-electric drive unit 13 is defined as the right gear. The non-electric drive unit 13 drives the transmission shaft 14 in a clockwise direction. Under the action of the reversing slider 17, the left gear drives the output bevel gear 16 to output in a clockwise direction, and the reversing slider 17 and the right gear do not interfere with each other. The non-electric drive unit 13 drives the transmission shaft 14 in a counterclockwise direction. Under the action of the reversing slider 17, the right gear drives the output bevel gear 15 to output in a clockwise direction, and the reversing slider 17 and the left gear do not interfere with each other.

[0057] It should be noted that the reversing slider 17 can only drive either the left gear or the right gear to rotate, and cannot drive both gears to rotate simultaneously. Specifically, when the reversing slider 17 is driving the left gear to rotate, it does not interfere with the right gear. At this time, the right gear rotates freely around the drive shaft 14 under the action of the output bevel gear 16. Similarly, when the reversing slider 17 is driving the right gear to rotate, it does not interfere with the left gear. At this time, the left gear rotates freely around the drive shaft 14 under the action of the output bevel gear 16.

[0058] Continue to refer to Figure 4 The output shaft 18 is provided with a first spiral groove 180. When the output bevel gear 16 outputs in a clockwise direction, the output shaft 18 also rotates in a clockwise direction, which drives the gear 19 that is helically meshed with it to rotate, and drives the transmission belt 20 to rotate, so that the cutting blade 121 performs cutting motion under the drive of the rotating shaft 120.

[0059] It should be noted that the rotation axis of the output shaft 18 and the rotation axis of the transmission shaft 14 are neither coincident nor parallel, but they are on the same plane and perpendicular to each other.

[0060] Continue to refer to Figure 7-12In one embodiment of this application, the right gear and the left gear have the same shape and structure, and the left gear and the right gear are arranged opposite to each other. To avoid repetition, only the structure of the left gear will be described in detail below. One end face of the left gear is provided with a plurality of first engaging structures 150. Two adjacent first engaging structures 150 are connected by a first transmission surface 151, which can apply an axial thrust to the reversing slider 17. The opposite end faces of the reversing slider 17 are provided with a plurality of second engaging structures 170. The second engaging structures 170 are adapted to the first engaging structures 150, and two adjacent second engaging structures 170 are connected by a second transmission surface 171. Specifically, the reversing slider 17 can move along the axial direction of the transmission shaft 14 toward the left gear or toward the right gear, and can also rotate along the transmission shaft 14 to drive the left gear or the right gear to rotate. When the non-electrically driven component 13 rolls clockwise, the drive shaft 14 also rotates clockwise, causing the reversing slider 17 to rotate clockwise. Simultaneously, under the boosting action of the drive shaft 14 and / or the axial boosting force of the first transmission surface 151 of the right gear, it moves towards the left gear. During this process, the reversing slider 17 gradually disengages from the right gear, and the second locking structure 170 on the end face of the reversing slider 17 engages with the first locking structure 150 on the end face of the left gear. Then, driven by the reversing slider 17, the left gear drives the output bevel gear 16 clockwise. The output bevel gear 16 drives the output shaft 18 to rotate clockwise under the action of the left gear. At the same time, due to the meshing relationship between the right gear and the output bevel gear 16, the right gear will idle along the drive shaft 14 counterclockwise under the action of the output bevel gear 16. Conversely, when the non-electric drive component 13 rolls counterclockwise, the drive shaft 14 also rotates counterclockwise, causing the reversing slider 17 to rotate counterclockwise. Simultaneously, under the boosting action of the drive shaft 14 and / or the axial boosting force of the first transmission surface 151 of the left gear, it moves towards the right gear. During this process, the reversing slider 17 gradually disengages from the left gear, and the second locking structure 170 on the end face of the reversing slider 17 engages with the first locking structure 150 on the end face of the right gear. Then, driven by the reversing slider 17, the right gear drives the output bevel gear 16 counterclockwise. The output bevel gear 16 drives the output shaft 18 to rotate clockwise under the action of the right gear. At the same time, due to the meshing relationship between the left gear and the output bevel gear 16, the left gear will idle along the drive shaft 14 clockwise under the action of the output bevel gear 16.

[0061] It is worth mentioning that we should continue to refer to Figure 7 , 8In this embodiment, the drive shaft 14 and the reversing slider 17 are driven by a helical transmission. Specifically, the drive shaft 14 has a second helical groove 140, and correspondingly, the inner surface of the reversing slider 17 has several protrusions 172 that match the concave taper of the second helical groove 140. Due to the inertia of the reversing slider 17 itself, the rotational speed of the reversing slider 17 is lower than the rotational speed of the drive shaft 14, resulting in a speed difference (relative rotation) between the drive shaft 14 and the reversing slider 17. When the non-electric drive component 13 rolls clockwise, the drive shaft 14 also rotates clockwise. Under the action of the second helical groove 140 on the drive shaft 14, the reversing slider 17 rotates clockwise and moves forward towards the left gear. At the same time, the first transmission surface 151 of the right gear also provides an axial thrust to the reversing slider 17 towards the left gear. At this time, the reversing slider 17 rotates towards the left gear under the combined action of the drive shaft 14 and the right gear. Conversely, when the non-electric drive component 13 rolls counterclockwise, the drive shaft 14 also rotates counterclockwise. Under the action of the second spiral groove 140 on the drive shaft 14, the reversing slider 17 rotates counterclockwise and moves forward towards the right gear. At the same time, the first transmission surface 151 of the left gear also gives the reversing slider 17 an axial thrust towards the right gear. At this time, the reversing slider 17 rotates towards the right gear under the combined action of the drive shaft 14 and the left gear.

[0062] Continue to refer to Figure 9-12 The first engaging structure 150 can be a toothed groove or a protruding tooth, and the second engaging structure 170 can be a protruding tooth or a toothed groove. In this embodiment, the first engaging structure 150 can be a toothed groove, and the second engaging structure 170 can be a protruding tooth that mates with the toothed groove. There can be two of each of the first engaging structure 150 and the second engaging structure 170. There can also be two of each of the first transmission surface 151 and the second transmission surface 171. The first transmission surface 151 and the second transmission surface 171 can be arc-shaped slopes. The inclination directions of two adjacent first transmission surfaces 151 are opposite, and the inclination directions of two adjacent second transmission surfaces 171 on the same end face of the reversing slider 17 are also opposite. For ease of understanding, depending on the tilt direction, one of the two first transmission surfaces 151 on the left gear tilts to the left and the other tilts to the right, and the two first transmission surfaces 151 tilt in the same direction. Correspondingly, on the same end face of the reversing slider 17, one of the two second transmission surfaces 171 tilts to the left and the other tilts to the right, and the two second transmission surfaces 171 tilt in the same direction.

[0063] Continue to refer to Figure 9-10The first engaging structure 150 has a third transmission surface 152, and the second engaging structure 170 has a fourth transmission surface 173. The fourth transmission surface 173 engages with the third transmission surface 152 to drive the left gear or the right gear to rotate. Specifically, the first transmission surface 151 and the third transmission surface 152 are spaced apart on the same end face of the input bevel gear 15, and the second transmission surface 171 and the fourth transmission surface 173 are spaced apart on the same end face of the reversing slider 17. The first transmission surface 151, the second transmission surface 171, the third transmission surface 152, and the fourth transmission surface 173 are all planar, and the extending directions of the third transmission surface 152 and the fourth transmission surface 173 are parallel to or coincide with the axial direction of the transmission shaft 14.

[0064] Furthermore, the plane perpendicular to the axis of the transmission shaft 14 is defined as the projection plane. The projection of the positive normal direction of all points on the third transmission surface 152 on the left or right gear onto the projection plane points in the clockwise direction, and the projection of the positive normal direction of all points on the third transmission surface 152 on the left or right gear onto the projection plane points in the counterclockwise direction.

[0065] Furthermore, the maximum angle formed between the normals of all points on the first transmission surface 151 of the left or right gear and the axis of the transmission shaft 14 is defined as the first angle, and the minimum angle formed between the normals of all points on the third transmission surface 152 of the left or right gear and the axis of the transmission shaft 14 is defined as the second angle, wherein the first angle is smaller than the second angle. In other words, compared to the normal on any third transmission surface 152 of the same gear that is closest to being parallel to the axis of rotation of the transmission shaft 14, the normal on any first transmission surface 151 that is closest to being perpendicular to the axis of rotation of the transmission shaft 14 is closer to being parallel to the axis of rotation of the transmission shaft 14.

[0066] Continue to refer to Figure 11-12 For the reversing slider 17, the projection of the positive normal direction of all points on the second transmission surface 171 of one end face of the reversing slider 17 onto the projection plane points clockwise, and the projection of the positive normal direction of all points on the fourth transmission surface 173 onto the projection plane points counterclockwise. It can be understood that the structures of the opposite two end faces of the reversing slider 17 are mirror images; that is, the projection of the positive normal direction of all points on the second transmission surface 171 of the other end face of the reversing slider 17 onto the projection plane points counterclockwise, and the projection of the positive normal direction of all points on the fourth transmission surface 173 onto the projection plane points clockwise.

[0067] Continue to refer to Figure 13-15In other embodiments of the present invention, the reversing slider 17 can only slide axially relative to the drive shaft 14 and can rotate synchronously with the drive shaft 14, but cannot rotate relative to the drive shaft 14. Specifically, a circumferential limiting groove 174 is provided on the inner surface of the reversing slider 17, and a circumferential limiting rib 141 adapted to the circumferential limiting groove 174 is provided on the drive shaft 14. The circumferential limiting rib 141 and the circumferential limiting groove 174 are adapted to ensure that the reversing slider 17 rotates synchronously with the drive shaft 14. It should be noted that, in this embodiment, although the reversing slider 17 cannot rotate relative to the drive shaft 14, the first transmission surface 151 of the left gear or right gear still provides the reversing slider 17 with an axial thrust in the direction of approaching the right gear or left gear, thereby enabling the reversing slider 17 to drive the right gear or left gear to rotate.

[0068] Furthermore, in the above embodiment, the maximum distance between any two points on the opposite end faces of the reversing slider 17 along the axial direction of the transmission shaft 17 is L1, and the minimum distance between any two points on the opposite end faces of the left gear and the right gear along the axial direction of the transmission shaft 17 is L2, where L1>L2. Specifically, since the axial movement of the reversing slider 17 relies solely on the axial thrust of the first transmission surface 151 of the left or right gear, assuming L1<L2, the reversing slider 17 may not be effectively driven to the right or left gear by the first transmission surface 151 of the left or right gear due to excessive clearance between the reversing slider 17 and the left or right gear. Therefore, for the above driving method, L1>L2 must be satisfied.

[0069] As can be seen from the above description, compared with the prior art, firstly, the cutting device in this embodiment of the invention does not require motor drive; the rotation of the roller can drive the cutting component to perform cutting motion. Secondly, the transmission mechanism in this embodiment has a bidirectional input and unidirectional output structure, and the left and right gears are exactly the same in shape and size, which reduces the types of parts and lowers the processing cost. Thirdly, when the reversing slider in the transmission mechanism of this embodiment meshes with the left or right gear, there is no interference with the right or left gear, which reduces the friction and wear between the reversing slider and the right or left gear, extends the life of the parts, and improves reliability.

[0070] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A transmission mechanism, characterized by, The transmission shaft; Two input bevel gears are arranged on the transmission shaft at intervals; An output bevel gear is engaged between the two input bevel gears; A reversing slider is arranged coaxially with the two input bevel gears on the transmission shaft, and the reversing slider is located between the two input bevel gears, and the reversing slider is in transmission connection with one of the two input bevel gears; The transmission shaft is driven in a first direction, and one of the input bevel gears drives the output bevel gear to rotate in a second direction under the action of the reversing slider; The transmission shaft is driven in a third direction, and the other input bevel gear drives the output bevel gear to rotate in the second direction under the action of the reversing slider, wherein the first direction and the third direction are opposite, and the second direction is perpendicular to the first direction and the third direction; One end surface of the input bevel gear is provided with a plurality of first clamping structures, and two adjacent first clamping structures are connected by a first transmission surface; Opposite end surfaces of the reversing slider are provided with a plurality of second clamping structures, and the second clamping structures are adapted to the first clamping structures, and two adjacent second clamping structures are connected by a second transmission surface; A second spiral groove is formed on the transmission shaft, and the inner surface of the reversing slider is provided with a plurality of protrusions matching the concave taper of the second spiral groove; or The inner surface of the reversing slider is provided with a circumferential limiting groove, and the transmission shaft is provided with a circumferential limiting convex rib matching the circumferential limiting groove, and the circumferential limiting convex rib matches the circumferential limiting groove to ensure that the reversing slider rotates synchronously under the rotation of the transmission shaft. At least two first transmission surfaces are arranged on the same end surface of the input bevel gear, the first clamping structure has a third transmission surface, and the first transmission surface and the third transmission surface are arranged on the same end surface of the input bevel gear at intervals; 2. The transmission mechanism of claim 1, wherein At least two second transmission surfaces are arranged on the same end surface of the reversing slider, the second clamping structure has a fourth transmission surface, the fourth transmission surface is in abutment with the third transmission surface to drive the input bevel gear to rotate, and the second transmission surface and the fourth transmission surface are arranged on the same end surface of the reversing slider at intervals. The first transmission surface and the second transmission surface are inclined surfaces, the inclined directions of two adjacent first transmission surfaces are opposite, and the inclined directions of two adjacent second transmission surfaces on the same end surface of the reversing slider are opposite.

3. The transmission mechanism of claim 2, wherein The inclined surface, the third transmission surface, and the fourth transmission surface are all planes, and the extension directions of the third transmission surface and the fourth transmission surface are parallel or coincident with the axial direction of the transmission shaft.

4. The transmission mechanism of claim 3, wherein A plane perpendicular to the axis of the transmission shaft is defined as a projection plane, the normal directions of all points on the third transmission surface of one of the input bevel gears are projected on the projection plane, and the projections are all directed to the first direction, and the normal directions of all points on the third transmission surface of the other input bevel gear are projected on the projection plane, and the projections are all directed to the third direction.

5. The transmission mechanism of claim 4, wherein ​ 6. The transmission mechanism of claim 4, wherein The maximum included angle between the normal of all points on the first transmission surface and the axis of the transmission shaft is defined as a first included angle, and the minimum included angle between the normal of all points on the third transmission surface and the axis of the transmission shaft is defined as a second included angle, wherein the first included angle is smaller than the second included angle.

7. The transmission mechanism of claim 5, wherein The normal of all points on the second transmission surface of one end surface of the reversing slider is projected on the projection plane in a first turning direction, and the normal of all points on the fourth transmission surface is projected on the projection plane in a third turning direction. The normal of all points on the second transmission surface of the other end surface of the reversing slider is projected on the projection plane in the third turning direction, and the normal of all points on the fourth transmission surface is projected on the projection plane in the first turning direction.

8. A transmission mechanism as claimed in any one of claims 1 to 7, wherein, The maximum distance between any two points on the opposite end surfaces of the reversing slider in the axial direction of the transmission shaft is L1, and the minimum distance between any two points on the end surfaces of the two input bevel gears in the axial direction of the transmission shaft is L2, wherein L1>L2.

9. A cleaning apparatus, characterized by The transmission mechanism as claimed in any one of claims 1-8 is connected with a cutting assembly, and is used to drive the cutting assembly to perform a cutting movement.

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