Gear transmission structure with constant-rotating-direction output and cleaning device

Abstract

The utility model discloses a fixed steering output gear transmission structure which comprises a mounting base, a driving gear, a swing clutch gear, a first transmission chain, a second transmission chain and a public transmission chain are arranged on the mounting base, the first transmission chain comprises a first fixed clutch gear and a first transmission gear, and the second transmission chain comprises a second fixed clutch gear and a second transmission gear. The second transmission chain comprises a second fixed clutch gear and a second transmission gear; the public transmission chain comprises a public gear; the number of the first transmission gears is larger than or equal to 1, the number of the second transmission gears is larger than or equal to 0, and the number of the common gears is larger than or equal to 1. The driving gear is meshed with the swing clutch gear, and the swing clutch gear can swing back and forth around the driving gear towards the first fixed clutch gear and the second fixed clutch gear. The utility model further discloses a cleaning device. The structure design is reasonable, and the motion direction of the output end can be kept unchanged when the rotation direction of the motor at the input end is changed.

Description

Technical Field

[0001] The utility model relates to the technical field of gear transmission, in particular to a gear transmission structure with fixed steering output and a cleaning device. Background Art

[0002] In the field of indoor cleaning robot technology, in order to improve the integration of robots and reduce costs, it is often necessary to use a single drive motor to complete multiple actions. For this reason, the change in the motor's rotation direction is often used to achieve different actions. Under normal conditions, when the motor direction at the input end of the transmission system changes, the direction at the output end of the transmission system will also change, which will cause the cleaning device such as the dust brush and mop plate to change its rotation direction, which will have a negative impact on the user experience. Utility Model Content

[0003] The utility model aims to provide a gear transmission structure with fixed steering output, by using the transmission structure, the movement direction of the output end can be kept unchanged when the motor at the input end changes the rotation direction, thereby improving the user experience.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a gear transmission structure with fixed steering output, including a mounting base, on which a driving gear, a swing clutch gear, a first transmission chain, a second transmission chain, and a common transmission chain are provided. The first transmission chain includes a first fixed clutch gear and a first transmission gear, the second transmission chain includes a second fixed clutch gear and a second transmission gear, and the common transmission chain includes a common gear; the number of the first transmission gears is ≥1, the number of the second transmission gears is ≥0, and the number of the common gears is ≥1; the driving gear is meshed with the swing clutch gear, and the swing clutch gear can be rotated around the The driving gear swings back and forth toward the first fixed clutch gear and the second fixed clutch gear; when the driving gear rotates counterclockwise, the swinging clutch gear can swing toward the direction of the first fixed clutch gear to drive the first fixed clutch gear to rotate counterclockwise, and when the driving gear rotates clockwise, the swinging clutch gear can swing toward the second fixed clutch gear to drive the second fixed clutch gear to rotate clockwise; the first fixed clutch gear can drive the common gear to rotate forwardly through the first transmission gear, and the second fixed clutch gear can drive the common gear to rotate forwardly.

[0005] Furthermore, the first transmission chain and the second transmission chain are distributed front and back, the driving gear is located on the left of the first transmission chain and the second transmission chain, and the swing clutch gear moves between the driving gear and the first transmission chain and the second transmission chain.

[0006] Furthermore, a first gap between the driving gear and the first fixed clutch gear is smaller than an outer diameter of the swing clutch gear to prevent the swing clutch gear from passing through the first gap; and a second gap between the driving gear and the second fixed clutch gear is smaller than an outer diameter of the swing clutch gear to prevent the swing clutch gear from passing through the second gap.

[0007] Furthermore, the swing clutch gear is assembled on a swing restraint, and the counterclockwise rotation and clockwise rotation of the driving gear can cooperate with the swing restraint to drive the swing clutch gear to swing back and forth around the driving gear toward the first fixed clutch gear and the second fixed clutch gear.

[0008] Furthermore, the swing restraint includes a swing arm, a vertically extending first gear shaft is connected to the middle of the driving gear, the first gear shaft is rotationally connected to one end of the swing arm, and the other end of the swing arm is rotationally connected to the middle of the swing clutch gear.

[0009] Furthermore, a rotating hole is provided at one end of the swing arm, and a fourth gear shaft extending vertically is connected to the other end of the swing arm. The rotating hole is rotationally connected to the first gear shaft, and the fourth gear shaft is rotationally connected to the middle part of the swing clutch gear.

[0010] Furthermore, the first gear shaft is fixedly connected to the middle portion of the driving gear, the first gear shaft can drive the driving gear to rotate counterclockwise and clockwise, and the first gear shaft is rotationally matched with the mounting base.

[0011] Further, the common transmission chain is located to the right of the first transmission chain and the second transmission chain, and the middle part of one or more of the first fixed clutch gear, the first transmission gear, the second fixed clutch gear, the second transmission gear, and the common gear is rotatably connected with a vertically extending second gear shaft, and the second gear shaft is fixedly connected to the mounting base.

[0012] Further, when the driving gear rotates clockwise, the driving gear will encounter resistance when driving the first fixed clutch gear through the swinging clutch gear, so that the swinging clutch gear swings toward the second fixed clutch gear; and when the driving gear rotates counterclockwise, the driving gear will encounter resistance when driving the second fixed clutch gear through the swinging clutch gear, so that the swinging clutch gear swings toward the first fixed clutch gear.

[0013] Furthermore, a terminal gear is provided on one side of the common transmission chain, and the terminal gear is meshed with the common gear of the common transmission chain. A vertically extending third gear shaft is fixedly connected to the middle part of the terminal gear, and the common gear can drive the terminal gear and the third gear shaft to rotate forward in turn.

[0014] Furthermore, the mounting base is provided with a through hole for the third gear shaft to pass through, and the third gear shaft passes through the through hole and rotates together; a one-way damper is provided between the through hole and the third gear shaft, and the one-way resistance generated by the one-way damper can prevent the third gear shaft from rotating in the opposite direction, and the one-way resistance encountered by the third gear shaft can be transmitted in sequence from the terminal gear and the common transmission chain.

[0015] Furthermore, the one-way damper includes a roller and a damping groove, and at least one damping groove is provided on the edge of the through hole, the damping groove is wide at one end and narrow at the other end, and the roller is installed in the damping groove; when the third gear shaft rotates forward, the roller is pushed to the wide end of the damping groove and can rotate freely, and when the third gear shaft rotates reversely, the roller is pushed to the narrow end of the damping groove, and under the action of the damping groove, the roller squeezes the third gear shaft to provide damping force to the third gear shaft.

[0016] The utility model also provides a cleaning device, comprising the gear transmission structure with fixed steering output as described in any of the above technical solutions, and also comprising a cleaning component, wherein the common gear is transmission-connected to the cleaning component so that both counterclockwise and clockwise rotation of the driving gear can drive the cleaning component to rotate forward.

[0017] In summary, the technical solution of the utility model has the following beneficial effects: the structural design of the utility model is reasonable, (1) by including a mounting base, the mounting base is provided with a driving gear, a swinging clutch gear, a first transmission chain, a second transmission chain, and a common transmission chain, the first transmission chain includes a first fixed clutch gear and a first transmission gear, the second transmission chain includes a second fixed clutch gear and a second transmission gear, and the common transmission chain includes a common gear; the number of the first transmission gears is ≥1, the number of the second transmission gears is ≥0, and the number of the common gears is ≥1; thereby, the first fixed clutch gear of the first transmission chain and the second fixed clutch gear of the second transmission chain can be used to alternately mesh with the swinging clutch gear respectively. (2) Through the meshing of the driving gear and the swinging clutch gear, the swinging clutch gear can swing back and forth around the driving gear toward the first fixed clutch gear and the second fixed clutch gear; when the driving gear rotates counterclockwise, the swinging clutch gear can swing toward the direction of the first fixed clutch gear to drive the first fixed clutch gear to rotate counterclockwise, and when the driving gear rotates clockwise, the swinging clutch gear can swing toward the second fixed clutch gear to drive the second fixed clutch gear to rotate clockwise; thus, when the driving gear rotates counterclockwise or clockwise, the swinging clutch gear will rotate around the driving gear while maintaining meshing with the driving gear to achieve a reciprocating swing toward the first fixed clutch gear or the second fixed clutch gear, thereby achieving the meshing and replacement of the swinging clutch gear with the first fixed clutch gear of the first transmission chain and the second fixed clutch gear of the second transmission chain. (3) The first fixed clutch gear can drive the common gear to rotate in the forward direction through the first transmission gear, and the second fixed clutch gear can drive the common gear to rotate in the forward direction; thus, when the driving gear rotates counterclockwise or clockwise, the power transmission direction received by the common transmission chain remains consistent, so that the power transmission direction output by the common transmission chain also remains consistent. From the above analysis, it can be seen that by using this transmission structure, when the motor at the input end (i.e., the driving gear) changes its rotation direction, the movement direction of the output end (i.e., the common transmission chain) remains unchanged, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model when the driving gear rotates counterclockwise from top to bottom;

[0020] Figure 3 It is a schematic diagram of the structure of the utility model when the driving gear rotates clockwise from top to bottom;

[0021] Figure 4 It is a schematic diagram of the structure of the utility model when the terminal gear is removed and a partial section is made;

[0022] Figure 5 yes Figure 4 A partial enlarged view on the right side of

[0023] Figure 6 It is a top view of the three-dimensional structure of the utility model when the terminal gear is removed;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure when the terminal gear is removed when viewed from above;

[0025] Figure 8 It is a top view of the three-dimensional structure of the mounting base of the utility model;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure when the utility model is removed from the mounting base and the terminal gear;

[0027] Fig.10 It is a three-dimensional structural schematic diagram of the swing arm of the utility model;

[0028] Description of reference numerals: 100 - mounting base, 200 - cleaning component, 300 - rotation direction;

[0029] 1-driving gear, 2-swinging clutch gear, 3-first transmission chain, 301-first fixed clutch gear, 302-first transmission gear, 4-second transmission chain, 401-second fixed clutch gear, 5-common transmission chain, 501-common gear; 6-first gear shaft, 7-second gear shaft, 8-third gear shaft, 9-swinging arm, 901-rotating hole, 902-fourth gear shaft; 10-through hole, 11-one-way damper, 1101-damping groove, 1102-roller, 12-terminal gear. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0031] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1For observation, the left side of the observer is set as left, the right side of the observer is set as right, the front of the observer is set as front, the rear of the observer is set as rear, the top of the observer is set as top, and the bottom of the observer is set as bottom. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the drawings, which is only for the convenience of clearly describing the utility model, and does not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.

[0032] See also Figures 1 to 10The present embodiment provides a gear transmission structure with a fixed steering output, including a mounting base 100, on which a driving gear 1, a swing clutch gear 2, a first transmission chain 3, a second transmission chain 4, and a common transmission chain 5 are arranged. The first transmission chain 3 includes a first fixed clutch gear 301 and a first transmission gear 302, the second transmission chain 4 includes a second fixed clutch gear 401 and a second transmission gear (not shown in the figure), and the common transmission chain 5 includes a common gear 501; the number of the first transmission gear 302 is ≥1, the number of the second transmission gear is ≥0, and the number of the common gear 501 is ≥1; the driving gear 1 is meshed with the swing clutch gear 2, and the swing clutch gear 2 can be rotated around The driving gear 1 swings back and forth toward the first fixed clutch gear 301 and the second fixed clutch gear 401; when the driving gear 1 rotates counterclockwise, the swinging clutch gear 2 can swing toward the direction of the first fixed clutch gear 301 to drive the first fixed clutch gear 301 to rotate counterclockwise, and when the driving gear 1 rotates clockwise, the swinging clutch gear 2 can swing toward the second fixed clutch gear 401 to drive the second fixed clutch gear 401 to rotate clockwise; the first fixed clutch gear 301 can drive the common gear 501 to rotate forward through the first transmission gear 302, and the second fixed clutch gear 401 can drive the common gear 501 to rotate forward. Function: (1) By including a mounting base, the mounting base is provided with a driving gear, a swing clutch gear, a first transmission chain, a second transmission chain, and a common transmission chain, the first transmission chain includes a first fixed clutch gear and a first transmission gear, the second transmission chain includes a second fixed clutch gear and a second transmission gear, and the common transmission chain includes a common gear; the number of first transmission gears is ≥1, the number of second transmission gears is ≥0, and the number of common gears is ≥1; thereby, the first fixed clutch gear of the first transmission chain and the second fixed clutch gear of the second transmission chain can be used to alternately mesh with the swing clutch gear respectively. (2) Through the meshing of the driving gear and the swinging clutch gear, the swinging clutch gear can swing back and forth around the driving gear toward the first fixed clutch gear and the second fixed clutch gear; when the driving gear rotates counterclockwise, the swinging clutch gear can swing toward the direction of the first fixed clutch gear to drive the first fixed clutch gear to rotate counterclockwise, and when the driving gear rotates clockwise, the swinging clutch gear can swing toward the second fixed clutch gear to drive the second fixed clutch gear to rotate clockwise; thus, when the driving gear rotates counterclockwise or clockwise, the swinging clutch gear will rotate around the driving gear while maintaining meshing with the driving gear to achieve a reciprocating swing toward the first fixed clutch gear or the second fixed clutch gear, thereby achieving the meshing and replacement of the swinging clutch gear with the first fixed clutch gear of the first transmission chain and the second fixed clutch gear of the second transmission chain.(3) The first fixed clutch gear can drive the common gear to rotate in the forward direction through the first transmission gear, and the second fixed clutch gear can drive the common gear to rotate in the forward direction; thus, when the driving gear rotates counterclockwise or clockwise, the power transmission direction received by the common transmission chain remains consistent, so that the power transmission direction output by the common transmission chain remains consistent. From the above analysis, it can be seen that by using this transmission structure, the movement direction of the output end (i.e., the common transmission chain) can be kept constant when the motor at the input end (i.e., the driving gear) changes its rotation direction, thereby improving the user experience. It is worth noting that when the number of the second transmission gears is 1 or more, the second transmission gear can choose to mesh externally or internally with the second fixed clutch gear according to actual needs (such as the length of the second transmission chain), as long as the power rotation directions output by the first and second transmission chains are different. Of course, when it is necessary to use the gear transmission structure with fixed steering output, after connecting the driving gear to the motor, the motor can drive the driving gear to rotate in the forward and reverse directions, thereby outputting kinetic energy. The counterclockwise and clockwise rotation of each component in two situations can be referred to. Figures 2 to 3 The rotation direction 300 in FIG. 1 is for ease of understanding.

[0033] Specifically, the first transmission chain 3 and the second transmission chain 4 are distributed along the front and back, the driving gear 1 is located on the left of the first transmission chain 3 and the second transmission chain 4, and the swing clutch gear 2 moves between the driving gear 1 and the first transmission chain 3 and the second transmission chain 4. Function: Since the first transmission chain 3 and the second transmission chain 4 are respectively located at the two ends of the swing stroke of the swing clutch gear 2. When the swing clutch gear 2 swings counterclockwise around the driving gear 1 to the end point of its swing stroke, it meshes with the first fixed clutch gear 301 of the first transmission chain 3 and disengages from the second fixed clutch gear 401 of the second transmission chain 4; when the swing clutch gear 2 swings clockwise around the driving gear 1 to the end point of its swing stroke, it meshes with the second fixed clutch gear 401 of the second transmission chain 4 and disengages from the first fixed clutch gear 301 of the first transmission chain 3.

[0034] Specifically, the first interval between the driving gear 1 and the first fixed clutch gear 301 is smaller than the outer diameter of the swing clutch gear 2, so as to prevent the swing clutch gear 2 from passing through the first interval; the second interval between the driving gear 1 and the second fixed clutch gear 401 is smaller than the outer diameter of the swing clutch gear 2, so as to prevent the swing clutch gear 2 from passing through the second interval. Function: Through the setting of the first interval and the second interval, the swing clutch gear 2 is restricted to move between the driving gear 1 and the first fixed clutch gear 301 and the second fixed clutch gear 401.

[0035] Specifically, the swing clutch gear 2 is assembled on the swing constraint, and the counterclockwise rotation and clockwise rotation of the driving gear 1 can cooperate with the swing constraint to drive the swing clutch gear 2 to swing back and forth around the driving gear 1 toward the first fixed clutch gear 301 and the second fixed clutch gear 401. Function: The swing constraint allows the swing clutch gear 2 to swing around the driving gear 1, and the center distance between the swing clutch gear 2 and the driving gear 1 remains unchanged during the swinging process. The swing constraint can be a swing arm sleeved on the driving shaft, or it can be a circular arc groove.

[0036] Specifically, the swing restraint member includes a swing arm 9, a vertically extending first gear shaft 6 is connected to the middle of the driving gear 1, the first gear shaft 6 is rotationally connected to one end of the swing arm 9, and the other end of the swing arm 9 is rotationally connected to the middle of the swing clutch gear 2. Function: Through the setting of the swing arm 9, the swing clutch gear 2 can be better swung back and forth according to the change of the rotation direction of the driving gear 1.

[0037] Specifically, a rotation hole 901 is provided at one end of the swing arm 9, and a fourth gear shaft 902 extending vertically is connected to the other end of the swing arm 9. The rotation hole 901 is rotationally connected to the first gear shaft 6, and the fourth gear shaft 902 is rotationally connected to the middle part of the swing clutch gear 2. Function: In this way, the swing arm 9 can be connected and matched with the driving gear 1 and the swing clutch gear 2.

[0038] Preferably, the swing arm 9 is located below the driving gear 1 and the swing clutch gear 2, the rotation hole 901 of the swing arm 9 is located below the driving gear 1, and the fourth gear shaft 902 of the swing arm 9 is upwardly rotatably connected to the middle part of the swing clutch gear 2. Function: In this way, the installation position of the swing arm can be reasonably set.

[0039] Specifically, the first gear shaft 6 is fixedly connected to the middle of the driving gear 1. The first gear shaft 6 can drive the driving gear 1 to rotate counterclockwise and clockwise. The first gear shaft 6 rotates with the mounting base 100. Function: The first gear shaft 6 is rotatably mounted on the mounting base 100 as a driving shaft. It is a power input part or an active part and can rotate counterclockwise and clockwise. The driving gear is fixedly connected to the driving shaft and can rotate with the driving shaft. The driving shaft can be connected to a motor to realize kinetic energy input.

[0040] Preferably, the first fixed clutch gear 301 of the first transmission chain 3 and the first transmission gear 302 are gradually tilted and distributed from left to right and backward and meshed in sequence; the common transmission chain 5 is located in the right front of the second transmission chain 4 and the right rear of the first transmission chain 3, so that the common gear 501 of the common transmission chain 5 can simultaneously mesh with the first transmission gear 302 of the first transmission chain 3 and the second fixed clutch gear 401 of the second transmission chain 4. Function: Such position distribution can achieve a reasonable distribution of the first transmission chain 3, the common transmission chain 5, and the second transmission chain 4.

[0041] Specifically, the common transmission chain 5 is located to the right of the first transmission chain 3 and the second transmission chain 4, and the middle of one or more of the first fixed clutch gear 301, the first transmission gear 302, the second fixed clutch gear 401, the second transmission gear, and the common gear 501 is rotatably connected with a vertically extending second gear shaft 7, and the second gear shaft 7 is fixedly connected to the mounting base 100. Function: In this way, the gears of each transmission chain can better rotate around the corresponding second gear shaft 7.

[0042] Specifically, when the driving gear 1 rotates clockwise, the driving gear 1 will encounter resistance when driving the first fixed clutch gear 301 through the swing clutch gear 2, so that the swing clutch gear 2 swings toward the second fixed clutch gear 401; and when the driving gear 1 rotates counterclockwise, the driving gear 1 will encounter resistance when driving the second fixed clutch gear 401 through the swing clutch gear 2, so that the swing clutch gear 2 swings toward the first fixed clutch gear 301. Function: The resistance can come from a one-way damping mechanism such as a one-way damper, a one-way bearing or a ratchet mechanism. The one-way damping mechanism can be set on any second gear shaft 7 or gear in the first transmission chain 3, the second transmission chain 4, and the common transmission chain 5, or on other shafts driven out of these transmission chains. After having reverse resistance, it can cooperate with mechanisms such as swing arms to achieve switching of transmission routes.

[0043] For better understanding: technical personnel in this field can define the rotation direction of the cleaning component to perform the cleaning action as forward or positive direction, and the opposite rotation direction as reverse or reverse direction (therefore forward does not mean counterclockwise, and reverse does not mean clockwise). Of course, other definitions can be made as needed.

[0044] Specifically, a terminal gear 12 is provided on one side of the common transmission chain 5, and the terminal gear 12 is meshed with the common gear 501 of the common transmission chain 5. A third gear shaft 8 extending vertically is fixedly connected to the middle of the terminal gear 12, and the common gear 501 can sequentially drive the terminal gear 12 and the third gear shaft 8 to rotate in the positive direction. Function: One end of the common transmission chain is transmission-connected with the first transmission chain 3 and the second transmission chain 4, and the other end is transmission-connected with the terminal gear 12, so that the power from the first transmission chain 3 can be transmitted to the third gear shaft 8, and the power from the second transmission chain 4 can also be transmitted to the third gear shaft 8, and then the power that can rotate in one direction can be transmitted outward through the third gear shaft 8.

[0045] Specifically, the mounting base 100 is provided with a through hole 10 for the third gear shaft 8 to pass through, and the third gear shaft 8 passes through the through hole 10 and rotates in cooperation; a one-way damper 11 is provided between the through hole 10 and the third gear shaft 8, and the one-way resistance generated by the one-way damper 11 can prevent the third gear shaft 8 from rotating in the opposite direction, and the one-way resistance suffered by the third gear shaft 8 can be transmitted from the terminal gear 12 and the common transmission chain 5 in sequence. Function: The through hole 10 can facilitate the assembly of the third gear shaft 8 and the connection with the external components required (such as the cleaning components mentioned below). As mentioned above, the one-way damper can also be arranged between the through hole 10 and the third gear shaft 8 (which can be the input shaft of the cleaning component). The existence of the one-way damper makes each transmission chain have a small resistance when rotating in the forward direction, a large resistance when rotating in the reverse direction, or cannot rotate in the reverse direction.

[0046] Specifically, the one-way damper 11 includes a roller 1102 and a damping groove 1101. At least one damping groove 1101 is provided on the edge of the through hole 10. The damping groove 1101 is wide at one end and narrow at the other end. The roller 1102 is installed in the damping groove 1101. When the third gear shaft 8 rotates forward, the roller 1102 is pushed to the wide end of the damping groove 1101 and can rotate freely. When the third gear shaft 8 rotates reversely, the roller 1102 is pushed to the narrow end of the damping groove 1101. Under the action of the damping groove 1101, the roller 1102 squeezes the third gear shaft 8 to provide a damping force to the third gear shaft 8. Function: When the third gear shaft 8 rotates forward, the roller is pushed to the wide end of the damping groove, and the third gear shaft 8 can rotate freely. When the third gear shaft 8 rotates reversely, the roller is pushed to the narrow end of the damping groove. Under the action of the damping groove, the roller squeezes the third gear shaft 8 (equivalent to the damping working axis), providing the third gear shaft 8 with a damping force for reverse rotation, and even locking its reverse rotation.

[0047] Preferably, the mounting base 100 is a gear box with an edge extending upward, and the driving gear 1, the swing clutch gear 2, the first transmission chain 3, the second transmission chain 4, the common transmission chain 5, and the terminal gear 12 are located in the gear box. Function: Through the setting of the gear box, the internal components can be better assembled and protected.

[0048] The utility model also provides a cleaning device, including a gear transmission structure with a fixed rotation output according to any of the above technical solutions, and also including a cleaning component 200, wherein a common gear 501 is connected to the cleaning component 200 in a transmission manner, so that the counterclockwise and clockwise rotation of the driving gear 1 can drive the cleaning component 200 to rotate in the positive direction. Function: Regardless of whether the driving shaft rotates clockwise or counterclockwise, the cleaning component will rotate unidirectionally in the positive direction. For example, the counterclockwise movement and power of the driving shaft can be transmitted to the cleaning component through the driving gear, the swing clutch gear, the first transmission chain 3, the common transmission chain, and the terminal gear, thereby driving the cleaning component to rotate in the positive direction.

[0049] Preferably, the cleaning assembly is installed at the lower right side of the gear box, and the third gear shaft 8 passes downward through the through hole 10 and is connected to the cleaning assembly, so that the rotation of the third gear shaft 8 (ie, the cleaning assembly input shaft) can drive the cleaning assembly to work.

[0050] During actual operation: the load torque of the cleaning component, the friction torque of the first transmission chain 3, the second transmission chain 4, and the common transmission chain 5 all form a resistance torque for the first fixed clutch gear 301 of the first transmission chain 3 to rotate counterclockwise, and at the same time, the driving gear rotates counterclockwise. Under the combined action of the resistance torque of the first fixed clutch gear 301 and the driving torque of the driving gear, the swing clutch gear 2 is always subjected to a counterclockwise swinging driving torque. At this time, the swing clutch gear 2 can maintain engagement with the first fixed clutch gear 301 of the first transmission chain 3.

[0051] When the driving gear 1 is driven to rotate clockwise, the swing clutch gear is pushed to the end point of the clockwise stroke, and the swing clutch gear is meshed with the second fixed clutch gear 401 of the second transmission chain 4. Since the second fixed clutch gear 401 of the second transmission chain 4 is driven to rotate clockwise, the clockwise movement and power of the driving gear 1 can be transmitted to the cleaning component through the swing clutch gear, the second transmission chain 4, and the common transmission chain, thereby driving the cleaning component to rotate forward. Under the action of the resistance torque (i.e., friction torque) of the clockwise rotation of the second fixed clutch gear 401 of the second transmission chain 4 and the driving torque of the driving gear 1, the swing clutch gear 2 is always subjected to the clockwise swing driving torque, and the swing clutch gear can maintain meshing with the second fixed clutch gear 401 of the second transmission chain 4. That is, the positive friction torque (smaller and will not prevent rotation) is for the first transmission chain and the second transmission chain to better form meshing with the swing clutch gear, while the reverse damping (larger and can reduce the rotation speed or even prevent rotation) is to disengage from the swing clutch gear.

[0052] Regardless of whether the driving gear rotates counterclockwise or clockwise, the first fixed clutch gear 301 of the first transmission chain 3 generally keeps rotating counterclockwise, and the second fixed clutch gear 401 of the second transmission chain 4 generally keeps rotating clockwise, and due to the effect of the one-way damper, the clockwise rotation of the first fixed clutch gear 301 and the counterclockwise rotation of the second fixed clutch gear 401 are restricted or prevented. In this way, when the driving gear is switched, the swing clutch gear is driven to swing, realizing the switching of the transmission route, and ensuring that the cleaning component always rotates in the forward direction.

[0053] In summary, the working principle of direction switching is: when the drive shaft is driven counterclockwise, the swinging clutch gear is at the end point of the counterclockwise stroke, and the swinging clutch gear is meshed with the first fixed clutch gear 301, thereby driving the cleaning component to rotate forward. If at this time, the drive shaft switches the rotation direction, from counterclockwise rotation to clockwise rotation, at this time the swinging clutch gear is still meshed with the first fixed clutch gear 301, due to the action of the one-way damper, the reverse rotation of the first fixed clutch gear 301 is restricted or prevented, and under the action of the driving force of the drive shaft, the swinging clutch gear will swing clockwise, thereby disengaging from the first fixed clutch gear 301, and meshing with the second fixed clutch gear 401, thereby driving the cleaning component to continue to rotate forward. The principle is the same when the drive shaft switches from clockwise rotation to counterclockwise rotation, and no further description is given. That is, a cleaning device with a two-way drive and a one-way output is provided. Of course, the gear transmission structure of the fixed steering output is not limited to a cleaning robot, but can also be other equipment with the same needs, and examples are not given one by one here.

[0054] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A gear transmission structure with fixed steering output, comprising a mounting base (100), characterized in that: The mounting base (100) is provided with a driving gear (1), a swing clutch gear (2), a first transmission chain (3), a second transmission chain (4), and a common transmission chain (5); the first transmission chain (3) includes a first fixed clutch gear (301) and a first transmission gear (302); the second transmission chain (4) includes a second fixed clutch gear (401) and a second transmission gear; the common transmission chain (5) includes a common gear (501); the number of the first transmission gears (302) is ≥1, the number of the second transmission gears is ≥0, and the number of the common gears (501) is ≥1; the driving gear (1) is meshed with the swing clutch gear (2); the swing clutch gear (2) can rotate around the driving gear (1) toward the first fixed clutch gear (301) ) and the second fixed clutch gear (401) can swing back and forth; when the driving gear (1) rotates counterclockwise, the swing clutch gear (2) can swing toward the first fixed clutch gear (301) to drive the first fixed clutch gear (301) to rotate counterclockwise, and when the driving gear (1) rotates clockwise, the swing clutch gear (2) can swing toward the second fixed clutch gear (401) to drive the second fixed clutch gear (401) to rotate clockwise; the first fixed clutch gear (301) can drive the common gear (501) to rotate forward through the first transmission gear (302), and the second fixed clutch gear (401) can drive the common gear (501) to rotate forward.

2. According to claim 1, a gear transmission structure with fixed steering output, characterized in that: The first transmission chain (3) and the second transmission chain (4) are distributed front and back, the driving gear (1) is located to the left of the first transmission chain (3) and the second transmission chain (4), and the swing clutch gear (2) moves between the driving gear (1) and the first transmission chain (3) and the second transmission chain (4).

3. A gear transmission structure with fixed steering output according to claim 2, characterized in that: A first gap between the driving gear (1) and the first fixed clutch gear (301) is smaller than the outer diameter of the swing clutch gear (2) so as to prevent the swing clutch gear (2) from passing through the first gap; and a second gap between the driving gear (1) and the second fixed clutch gear (401) is smaller than the outer diameter of the swing clutch gear (2) so as to prevent the swing clutch gear (2) from passing through the second gap.

4. A gear transmission structure with fixed steering output according to claim 3, characterized in that: The swing clutch gear (2) is mounted on a swing restraining member, and the counterclockwise rotation and clockwise rotation of the driving gear (1) can cooperate with the swing restraining member to drive the swing clutch gear (2) to swing back and forth around the driving gear (1) toward the first fixed clutch gear (301) and the second fixed clutch gear (401).

5. The gear transmission structure with fixed steering output according to claim 4, characterized in that: The swing restraining member comprises a swing arm (9), the middle part of the driving gear (1) is connected to a vertically extending first gear shaft (6), the first gear shaft (6) is rotationally connected to one end of the swing arm (9), and the other end of the swing arm (9) is rotationally connected to the middle part of the swing clutch gear (2).

6. A gear transmission structure with fixed steering output according to claim 5, characterized in that: One end of the swing arm (9) is provided with a rotation hole (901), and the other end of the swing arm (9) is connected to a fourth gear shaft (902) extending vertically, the rotation hole (901) is rotationally connected to the first gear shaft (6), and the fourth gear shaft (902) is rotationally connected to the middle part of the swing clutch gear (2).

7. A gear transmission structure with fixed steering output according to any one of claims 5 to 6, characterized in that: The first gear shaft (6) is fixedly connected to the middle part of the driving gear (1), and the first gear shaft (6) can drive the driving gear (1) to rotate counterclockwise and clockwise. The first gear shaft (6) is rotationally matched with the mounting base (100).

8. A gear transmission structure with fixed steering output according to any one of claims 1 to 6, characterized in that: The common transmission chain (5) is located to the right of the first transmission chain (3) and the second transmission chain (4); the middle part of one or more of the first fixed clutch gear (301), the first transmission gear (302), the second fixed clutch gear (401), the second transmission gear and the common gear (501) is rotatably connected to a vertically extending second gear shaft (7); the second gear shaft (7) is fixedly connected to the mounting base (100).

9. A gear transmission structure with fixed steering output according to any one of claims 1 to 6, characterized in that: When the driving gear (1) rotates clockwise, the driving gear (1) will encounter resistance when driving the first fixed clutch gear (301) through the swing clutch gear (2), so that the swing clutch gear (2) swings toward the second fixed clutch gear (401); and when the driving gear (1) rotates counterclockwise, the driving gear (1) will encounter resistance when driving the second fixed clutch gear (401) through the swing clutch gear (2), so that the swing clutch gear (2) swings toward the first fixed clutch gear (301).

10. A gear transmission structure with fixed steering output according to any one of claims 1 to 6, characterized in that: A terminal gear (12) is provided on one side of the common transmission chain (5), and the terminal gear (12) is meshed with a common gear (501) of the common transmission chain (5). A third gear shaft (8) extending vertically is fixedly connected to the middle of the terminal gear (12), and the common gear (501) can sequentially drive the terminal gear (12) and the third gear shaft (8) to rotate in a positive direction.

11. A gear transmission structure with fixed steering output according to claim 10, characterized in that: The mounting base (100) is provided with a through hole (10) for the third gear shaft (8) to pass through, and the third gear shaft (8) passes through the through hole (10) and rotates in conjunction with the through hole (10); a one-way damper (11) is provided between the through hole (10) and the third gear shaft (8), and the one-way resistance generated by the one-way damper (11) can prevent the third gear shaft (8) from rotating in the opposite direction, and the one-way resistance experienced by the third gear shaft (8) can be transmitted in sequence from the terminal gear (12) and the common transmission chain (5).

12. The gear transmission structure with fixed steering output according to claim 11, characterized in that: The one-way damper (11) comprises a roller (1102) and a damping groove (1101); at least one damping groove (1101) is provided on the edge of the through hole (10); the damping groove (1101) is wide at one end and narrow at the other end; the roller (1102) is installed in the damping groove (1101); when the third gear shaft (8) rotates in the forward direction, the roller (1102) is pushed to the wide end of the damping groove (1101) and can rotate freely; when the third gear shaft (8) rotates in the reverse direction, the roller (1102) is pushed to the narrow end of the damping groove (1101); under the action of the damping groove (1101), the roller (1102) squeezes the third gear shaft (8) and provides a damping force to the third gear shaft (8).

13. A cleaning device, characterized in that: A gear transmission structure with a fixed steering output as claimed in any one of claims 1 to 12, further comprising a cleaning component (200), wherein the common gear (501) is in transmission connection with the cleaning component (200) so that both counterclockwise and clockwise rotation of the driving gear (1) can drive the cleaning component (200) to rotate in the forward direction.

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