Programming vehicle

Abstract

The utility model discloses a programming vehicle. The programming vehicle comprises a vehicle frame, a movable gearbox and a programming assembly. Wheels and a driving mechanism are arranged on the frame, the wheels are provided with gear parts, and the frame is provided with sliding grooves. The movable gear box is provided with a matching shaft, a gear train is arranged in the movable gear box and provided with a forward gear and a backward gear, and one gear in the gear train is in transmission connection with the driving mechanism. The programming assembly comprises a plurality of gear pieces, each gear piece comprises a forward gear piece and a backward gear piece, and the driving mechanism drives the programming assembly to move, so that the gear pieces sequentially pass through the movable gear box. When the forward gear part moves to the movable gear box, the forward gear is meshed with the gear part; and when the backward gear part moves to the movable gear box, the backward gear is meshed with the gear part. According to the programming vehicle, the programming assembly moves to the forward gear part or the backward gear part, so that the forward gear part or the backward gear part passes through the movable gearbox, the programming vehicle can move forwards and backwards, and controllability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to programming robot technical field, specifically, relate to a programming car. BACKGROUND

[0002] With the importance of programming education in the growth and development of children increasingly prominent, programming robot market gradually rises. However, the current market of intelligent programming robots are mostly intelligent, rely on IC control speed, the cost is higher, limit its development. And in the related art, there are also using mechanical programming robot case, mechanical programming robot can replace the existing intelligent programming robot in play, also can exercise children's thinking and space sense, and mechanical programming robot because not using IC control movement, make its cost is lower, facilitate widely popularization. But the mechanical programming robot in the prior art does not have the function module of controlling backward, there is only forward, cannot backward defect, walking function single, make the controllability of mechanical programming robot is poor.

[0003] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0004] To solve one of the above technical problems, the utility model provides a programming car.

[0005] The application provides the following technical scheme:

[0006] A programming car, comprising:

[0007] A frame, the frame is provided with wheels and a driving mechanism, the wheels have gear parts, and the frame has a sliding groove;

[0008] A movable gear box is rotatably arranged on the frame, the movable gear box has a matching shaft, the matching shaft is slidably inserted into the sliding groove, the movable gear box has a wheel train, the wheel train has a forward gear and a backward gear, and a gear in the wheel train is connected to the driving mechanism in a gear transmission mode;

[0009] A programming assembly, the programming assembly comprises a plurality of gear parts, each gear part comprises a forward gear part and a backward gear part, each gear part is sequentially arranged, adjacent gear parts are detachably connected, the programming assembly is drivingly connected to the driving mechanism, and the driving mechanism drives the programming assembly to move so that each gear part sequentially passes through the movable gear box;

[0010] When the forward gear moves to the movable gear box, the forward gear pushes the matching shaft so that the movable gear box rotates a first angle, and the forward gear and the gear part are engaged.

[0011] Optionally, each of the gear parts comprises a plate body.

[0012] The forward gear part comprises a forward gear rib arranged at the edge of the plate body, and when the forward gear part moves to the movable gear box, the forward gear rib pushes the matching shaft so that the movable gear box rotates a first angle.

[0013] The reverse gear part comprises a reverse gear rib arranged at the edge of the plate body, and when the reverse gear part moves to the movable gear box, the reverse gear rib pushes the matching shaft so that the movable gear box rotates a second angle.

[0014] Optionally, the height of the forward gear rib and the reverse gear rib is different.

[0015] Optionally, each of the gear parts further comprises a steering gear part.

[0016] The movable gear boxes are arranged at both sides of the frame, and the movable gear boxes at both sides of the frame are respectively used for gear transmission cooperation with the corresponding side gear.

[0017] When the steering gear part moves to the movable gear box, the steering gear part pushes one side of the movable gear box to rotate a first angle, so that the forward gear of the movable gear box is engaged with the corresponding side wheel, and the steering gear part pushes the other side of the movable gear box to rotate a second angle, so that the reverse gear of the movable gear box is engaged with the corresponding side wheel.

[0018] Optionally, the steering gear part comprises a forward gear rib and a reverse gear rib arranged at both sides of the plate body.

[0019] When the steering gear part moves to the movable gear box, the forward gear rib abuts against the matching shaft of the corresponding side movable gear box, and the reverse gear rib abuts against the matching shaft of the corresponding side gear.

[0020] Optionally, the programming assembly further comprises a pause gear part.

[0021] When the pause gear part moves to the movable gear box, the pause gear part pushes the matching shaft so that the movable gear box rotates a third angle, and the gear part is separated from the movable gear box.

[0022] Optionally, each of the gear members is provided with a rack;

[0023] The driving mechanism comprises a propulsion gear;

[0024] The propulsion gear and the rack are engaged, and the propulsion gear drives the programming assembly to move by rotation.

[0025] Optionally, the programming assembly comprises a termination member, and the termination member and the gear member are detachably connected;

[0026] When the termination member moves to the propulsion gear, the driving mechanism and the programming assembly are out of the transmission matching relationship, and the programming assembly stops moving.

[0027] Optionally, the vehicle frame has a chassis and a support;

[0028] The chassis is provided with a limiting seat, and a limiting space is formed between the limiting seat and the chassis;

[0029] The support is provided with a guide shell;

[0030] The programming assembly is a closed ring, and the programming assembly is sleeved on the limiting seat and the guide shell.

[0031] Optionally, the programming vehicle comprises an arm shell;

[0032] The arm shell is swingably arranged on the vehicle frame.

[0033] Optionally, the programming vehicle comprises a transmission member;

[0034] The wheel is provided with an eccentric shaft;

[0035] The transmission member is movably arranged on the vehicle frame;

[0036] The transmission member has a strip-shaped slot, and the eccentric shaft is inserted into the strip-shaped slot;

[0037] The wheel rotation can drive the arm shell to swing through the transmission member.

[0038] By adopting the above technical scheme, the programming vehicle has the following beneficial effects:

[0039] The programming vehicle moves to the forward gear member or the backward gear member through the programming assembly, so that the forward gear member or the backward gear member passes through the movable gear box, and the programming vehicle can move forward and backward, and has good controllability.

[0040] The specific embodiments of the utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which are part of the present application, serve to further understand the present application, and the illustrative embodiments of the present application and the description thereof serve to explain the present application, but do not constitute improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:

[0042] Figure 1 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0043] Figure 2 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0044] Figure 3 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0045] Figure 4 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0046] Figure 5 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0047] Figure 6 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0048] Figure 7 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0049] Figure 8 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0050] Figure 9 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0051] Figure 10 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0052] Figure 11 The structural schematic diagram of the programmed vehicle provided for the application embodiment is shown in the figure.

[0053] In the figure, the frame 1, the sliding groove 11, the escape 12, the chassis 13, the support 14, the movable gear box 2, the shell 21, the matching shaft 211, the wheel system 22, the programming assembly 3, the gear piece 31, the forward gear piece 311, the reverse gear piece 312, the steering gear piece 313, the plate body a, the forward gear rib b, the reverse gear rib c, the rack d, the clamping shaft e, the clamping groove f, the wheel 4, the gear part 41, the eccentric shaft 42, the driving mechanism 5, the motor 51, the driving wheel system 52, the propeller gear 521, the arm shell 6, the transmission piece 7, the strip-shaped groove 71, the extension part 72, the limiting seat 8, the guide shell 9.

[0054] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0056] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0057] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] Reference is made to Figures 1 to 11As shown, the programming vehicle provided by the embodiment of the present disclosure comprises a vehicle frame 1, a movable gear box 2 and a programming assembly 3. The vehicle frame 1 is provided with wheels 4 and a driving mechanism 5, the wheels 4 are provided with gear portions 41, and the vehicle frame 1 is provided with a sliding groove 11. The movable gear box 2 is rotatably arranged on the vehicle frame 1, the movable gear box 2 is provided with a matching shaft 211, the matching shaft 211 is slidably inserted into the sliding groove 11, and the movable gear box 2 is provided with a gear train 22, the gear train 22 is provided with a forward gear and a reverse gear, and a gear in the gear train 22 is drivingly connected to the driving mechanism 5. The movable gear box 2 comprises a shell 21 and the gear train 22, the shell 21 is provided with the matching shaft 211, the shell has a cavity, and the gear train 22 is arranged in the cavity. The programming assembly 3 comprises a plurality of gear members 31, each of the gear members 31 comprises a forward gear member 311 and a reverse gear member 312, the gear members 31 are sequentially arranged, adjacent gear members 31 are detachably connected, the programming assembly 3 is drivingly connected to the driving mechanism 5, and the driving mechanism 5 drives the programming assembly 3 to move, so that each of the gear members 31 sequentially passes through the movable gear box 2. When the forward gear member 311 moves to the movable gear box 2, the forward gear member 311 pushes the matching shaft 211, so that the movable gear box 2 rotates by a first angle, and the forward gear and the gear portion 41 are engaged. When the reverse gear member 312 moves to the movable gear box 2, the reverse gear member 312 pushes the matching shaft 211, so that the movable gear box 2 rotates by a second angle, and the reverse gear and the gear portion 41 are engaged. The driving mechanism 5 comprises a motor 51 and a driving gear train 52, the driving gear train 52 comprises a plurality of gears, a gear in the driving gear train 52 is drivingly connected to the gear member 31, each of the gears in the driving gear train 52 is engaged with the forward gear and the reverse gear, and the rotation directions of the forward gear and the reverse gear are opposite. The programming vehicle of the present application moves to the forward gear member 311 or the reverse gear member 312 through the programming assembly 3, so that the forward gear member 311 or the reverse gear member 312 passes through the movable gear box 2, and the programming vehicle can move forward and backward, and has good controllability.

[0059] As Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10As shown, each of the gear members 31 comprises a plate body a, the forward gear member 311 comprises a forward gear rib b arranged at the edge of the plate body a, when the forward gear member 311 moves to the movable gear box 2, the forward gear rib b pushes the matching shaft 211, so that the movable gear box 2 rotates by a first angle. The reverse gear member 312 comprises a reverse gear rib c arranged at the edge of the plate body a, when the reverse gear member 312 moves to the movable gear box 2, the reverse gear rib c pushes the matching shaft 211, so that the movable gear box 2 rotates by a second angle. Wherein the height of the forward gear rib b and the reverse gear rib c is different. The height of the forward gear rib b is lower than the height of the reverse gear rib c. When the forward gear member 311 moves to the movable gear box 2, the forward gear rib b pushes the matching shaft 211 by a smaller distance, so that the movable gear box 2 rotates by a first angle, the forward gear and the gear part 41 are engaged, and the programmed car moves forward. When the reverse gear member 312 moves to the movable gear box 2, the reverse gear rib c pushes the matching shaft 211 by a larger distance, so that the movable gear box 2 rotates by a second angle, and the programmed car moves backward. Wherein the second angle is greater than the first angle.

[0060] As Figure 3 , Figure 4 , Figure 5 and Figure 11In a possible implementation, each of the gear members 31 further includes a steering gear member 313. The vehicle frame 1 is provided with movable gear boxes 2 on both sides, and the movable gear boxes 2 on both sides of the vehicle frame 1 are respectively used for gear transmission cooperation with the corresponding side. When the steering gear member 313 moves to the movable gear box 2, the steering gear member 313 pushes the movable gear box 2 on one side to rotate by a first angle, so that the forward gear of the movable gear box 2 is engaged with the corresponding side wheel 4, and the steering gear member 313 pushes the movable gear box 2 on the other side to rotate by a second angle, so that the reverse gear of the movable gear box 2 is engaged with the corresponding side wheel 4. In the prior art, when the programming vehicle turns, for example, turns to the right, the right wheel 4 is controlled not to rotate and the left wheel 4 is controlled to rotate forward by a mechanical structure, which is like drawing a circle with a compass, the right wheel 4 is like the center point of the compass, and the left wheel 4 rotates forward to form an arc track. Such turning seems to complete the turning operation, but such turning makes the programming vehicle not flexible in turning and the turning angle not accurate. Moreover, the programming vehicle needs to walk according to the route specified on the map to complete the task, and the route is usually a complex route with multiple turns connected by multiple squares. When the programming vehicle in the prior art walks on the route, it may rotate to the outside of the square of the specified route during turning, and then moves forward after completing the turning, so that the programming vehicle walks on the outside of the square of the specified route, thereby failing to accurately complete the task. However, the programming vehicle of the present application can rotate the left and right wheels 4 at the same time, one side wheel 4 rotates backward and the other side wheel 4 rotates forward, for example, when turning to the right, the right wheel 4 rotates backward and the left wheel rotates forward. Such turning not only realizes flexible turning, but also makes the programming vehicle not move to the outside of the square during turning, so that the turning angle is more accurate, greatly improves the controllability and task completion ability of the programming vehicle, and enables the programming vehicle to better perform the programming task according to the map route, thereby providing children with richer and more accurate programming experience, effectively exercising their thinking ability and spatial sense.

[0061] As Figure 3 , Figure 4 , Figure 9 , Figure 10 and Figure 11As shown, the steering gear 313 includes forward gear ribs b and reverse gear ribs c arranged on both sides of the plate body a. When the steering gear 313 moves to the movable gear box 2, the forward gear ribs b abut against the mating shaft 211 of the movable gear box 2 on the corresponding side, and the reverse gear ribs c abut against the mating shaft 211 of the movable gear on the corresponding side. The height of the forward gear ribs b on the forward gear 311 and the height of the forward gear ribs b on the steering gear 313 are the same, so that the forward gear ribs b push the corresponding movable gear box 2 at the same angle, so that the corresponding forward gear engages with the wheel 4 part, and the corresponding wheel 4 moves forward. The height of the reverse gear ribs c on the reverse gear 312 and the height of the reverse gear ribs c on the steering gear 313 are the same, so that the reverse gear ribs c push the corresponding movable gear box 2 at the same angle, so that the corresponding reverse gear engages with the wheel 4 part, and the corresponding wheel 4 moves backward. Thus, among the two wheels 4, one wheel 4 moves forward and the other wheel 4 moves backward, realizing the steering flexibility of the programmed vehicle.

[0062] In a possible implementation, the programming assembly 3 further includes a pause gear 31 (not shown). When the pause gear 31 moves to the movable gear box 2, the pause gear 31 pushes the mating shaft 211, so that the movable gear box 2 rotates by a third angle, and the gear part 41 is separated from the movable gear box 2. The pause gear 31 is provided with a pause gear rib (not shown), which pushes the mating shaft 211 when the pause gear 31 moves to the movable gear box 2, so that the movable gear box 2 rotates by a third angle, and the movable gear box 2 is away from the gear part 41, and the gear part 41 is not in contact with the forward gear and the reverse gear, and the wheel 4 will not rotate, so that the programmed vehicle of the present application is paused. The pause gear 31 increases the walking function of the programmed vehicle of the present application, and makes the programmable vehicle more controllable.

[0063] As shown in Figure 3 , Figure 4 , Figure 9 , Figure 10 and Figure 11 , each of the gears 31 is provided with a rack d, and the drive mechanism 5 includes a driving gear 521, which engages with the rack d and drives the movement of the programming assembly 3. The vehicle frame 1 has a avoiding port 12, and the driving gear 521 is a gear in the driving gear train 52, and the gear part 41 of the driving gear 521 passes through the avoiding port 12 to engage with the rack d. The avoiding port 12 does not interfere with the rotation of the driving gear 521.

[0064] In a possible implementation, the programming assembly 3 comprises a termination piece (not shown) which is detachably connected with the gear piece 31. When the termination piece moves to the propulsion gear 521, the driving mechanism 5 and the programming assembly 3 are disengaged from the driving engagement, and the programming assembly 3 stops moving. The termination piece is not provided with the rack d, and when the termination piece moves to the propulsion gear 521, the termination piece cannot be in driving engagement with the propulsion gear 521, and the programming assembly 3 cannot move and perform any walking function.

[0065] In a possible implementation, as shown in Figure 1 and Figure 2 , the vehicle frame 1 comprises a chassis 13 and a support 14, the chassis 13 is provided with a limiting seat 8, a limiting space is formed between the limiting seat 8 and the chassis 13, the support 14 is provided with a guide shell 9, the programming assembly 3 is a closed loop, and the programming assembly 3 is sleeved on the limiting seat 8 and the guide shell 9. Each of the gear pieces 31 is provided with a clamping shaft e and a clamping groove f, the clamping shaft e and the clamping groove f are arranged at both ends of the gear piece 31 along the length direction, the clamping shaft e of one of the gear pieces 31 is rotatably clamped in the clamping groove f of the other of the gear pieces 31, so as to connect each of the gear pieces 31 to form a closed loop structure, the limiting seat 8 limits one end of the loop-shaped programming assembly 3 close to the ground in the limiting space, so as to ensure that the rack d on the gear piece 31 can be engaged with the driving gear, and the other end of the programming assembly 3 away from the ground is supported on the guide shell 9 and will not fall down under the action of gravity. The programming assembly 3 is sleeved on the limiting seat 8 and the guide shell 9 and can rotate, so that each of the gear pieces 31 can be engaged with the driving gear to perform the actions of moving forward, moving backward and pausing.

[0066] In a possible implementation, the programming vehicle comprises an arm shell 6 which is swingably arranged on the vehicle frame 1. The swing of the arm shell 6 makes the appearance of the programming vehicle of the present application more like a smart robot, and can simulate the walking action of a smart programming robot.

[0067] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the programming vehicle comprises a transmission member 7. An eccentric shaft 42 is arranged on the wheel 4, and the transmission member 7 is movably arranged on the frame 1. The transmission member 7 has a strip-shaped slot 71, and the eccentric shaft 42 is inserted into the strip-shaped slot 71. The rotation of the wheel 4 can drive the transmission member 7 to swing the arm shell 6. The transmission member 7 is provided with an extension 72 near one end of the arm shell 6, and the extension 72 extends to the elbow of the arm shell 6. When the wheel 4 rotates, the eccentric shaft 42 can drive the transmission member 7 to move up and down, so that the extension 72 pushes the elbow of the arm shell 6 to move up and down, and the arm shell 6 can swing.

[0068] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned embodiment according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. A programming vehicle, characterized in that, include: A frame on which wheels and a drive mechanism are mounted, the wheels having gear portions and the frame having grooves; A movable gearbox is rotatably mounted on the frame. The movable gearbox has a mating shaft that is slidably inserted into the slide groove. The movable gearbox contains a gear train with a forward gear and a reverse gear. One gear in the gear train is connected to the drive mechanism. The programming component includes multiple gear components, each gear component including a forward gear component and a reverse gear component, the gear components are arranged sequentially, adjacent gear components are detachably connected, the programming component is connected to the drive mechanism, and the drive mechanism drives the programming component to move, so that each gear component passes through the movable gearbox in sequence. Specifically, when the forward gear shifter moves to the movable gearbox, the forward gear shifter pushes against the mating shaft, causing the movable gearbox to rotate by a first angle, and the forward gear meshes with the gear section; when the reverse gear shifter moves to the movable gearbox, the reverse gear shifter pushes against the mating shaft, causing the movable gearbox to rotate by a second angle, and the reverse gear meshes with the gear section.

2. The programming vehicle according to claim 1, characterized in that, Each of the aforementioned gear shift components includes a plate body; The forward gear component includes a forward gear rib disposed on the edge of the plate. When the forward gear component moves to the movable gearbox, the forward gear rib pushes against the mating shaft, causing the movable gearbox to rotate by a first angle. The reversing gear component includes a reversing gear rib disposed on the edge of the plate. When the reversing gear component moves to the movable gearbox, the reversing gear rib pushes against the mating shaft, causing the movable gearbox to rotate a second angle. The forward gear rib and the reverse gear rib have different heights.

3. The programming vehicle according to claim 2, characterized in that, Each of the aforementioned gear shift components also includes a steering gear shift component; Movable gearboxes are provided on both sides of the frame, and the movable gearboxes on both sides of the frame are respectively used to engage with the gear transmission on the corresponding side; When the steering gear shifter moves to the movable gearbox, the steering gear shifter pushes the movable gearbox on one side to rotate by a first angle, so that the forward gear of the movable gearbox meshes with the corresponding side wheel. The steering gear shifter pushes the movable gearbox on the other side to rotate by a second angle, so that the reverse gear of the movable gearbox meshes with the corresponding side wheel.

4. The programming vehicle according to claim 3, characterized in that, The steering gear component includes a forward gear rib and a reverse gear rib respectively disposed on both sides of the plate. When the steering gear component moves to the movable gearbox, the forward gear rib abuts against the mating shaft of the movable gearbox on the corresponding side, and the reverse gear rib abuts against the mating shaft of the movable gear on the corresponding side.

5. The programming vehicle according to claim 4, characterized in that, The programming component also includes a pause / gear mechanism; When the pause position component moves to the movable gearbox, the pause position component pushes against the mating shaft, causing the movable gearbox to rotate by a third angle, and the gear part separates from the movable gearbox.

6. The programming vehicle according to claim 5, characterized in that, Each of the aforementioned gear components is equipped with a rack; The drive mechanism includes a propulsion gear; The propulsion gear meshes with the rack, and the rotation of the propulsion gear drives the programming component to move.

7. The programming vehicle according to claim 6, characterized in that, The programming component includes a termination element, which is detachably connected to the gear element; When the terminating element moves to the propulsion gear, the drive mechanism and the programming component disengage from their transmission relationship, and the programming component stops moving.

8. The programming vehicle according to claim 1, characterized in that, The vehicle frame has a chassis and a support frame; A limiting seat is provided on the chassis, and a limiting space is formed between the limiting seat and the chassis; A guide shell is provided on the bracket; The programming component is a closed ring, and it is sleeved on the limiting seat and the guide shell.

9. The programming vehicle according to claim 1, characterized in that, Including the arm shell; The arm housing is pivotally mounted on the frame.

10. The programming vehicle according to claim 9, characterized in that, Including transmission components; An eccentric shaft is provided on the wheel; The transmission component is movably mounted on the vehicle frame; The transmission component has a strip groove, and the eccentric shaft is inserted into the strip groove; The rotation of the wheel can drive the arm housing to swing through the transmission component.

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