Transmission device and walking equipment

Abstract

The utility model discloses a transmission device and walking equipment, and belongs to the field of non-motor vehicles. The transmission device comprises a frame assembly comprising a first end and a second end which are oppositely arranged, and a driving wheel disc rotationally arranged at the first end; the left driven wheel set is arranged on the left side of the second end and comprises a left wheel and a left flywheel which rotate synchronously; the right driven wheel set is arranged on the right side of the second end and comprises a right wheel and a right flywheel which rotate synchronously; the transmission assembly comprises a differential mechanism in transmission connection with the driving wheel disc, a left half shaft and a right half shaft, the left half shaft and the right half shaft are arranged on the left side and the right side of the differential mechanism and are in transmission connection with the differential mechanism, a left driving flywheel is fixedly arranged on the left half shaft and is in transmission connection with the left flywheel through a left transmission chain, and a right driving flywheel is arranged on the right half shaft. The right driving flywheel is in transmission connection with the right flywheel through a right transmission chain. The driving wheel disc drives the left driving flywheel and the right driving flywheel to rotate through the differential mechanism and drives the left wheel and the right wheel to rotate. The transmission device is balanced in power transmission.

Description

Technical Field

[0001] This utility model relates to the field of non-motorized vehicle technology, and in particular to a transmission device and a walking device. Background Technology

[0002] Non-motorized vehicles, as a common mode of transportation, are widely used in urban short-distance transportation, elderly mobility, disabled travel, and express delivery, among other fields. Their stability and load-bearing capacity give them unique advantages in these application scenarios.

[0003] Existing non-motorized vehicles, such as tricycles, typically use one rear wheel driven by the front wheel, resulting in uneven power transmission. During operation, especially when turning or on uneven surfaces, the single-sided drive wheel is prone to slippage or loss of traction, affecting vehicle stability and safety. Furthermore, when turning, the inner and outer wheels require different rotational speeds. Single-sided drive cannot effectively address the differential speed issue, making the vehicle prone to loss of control when turning, particularly at high speeds or sharp turns, resulting in poor stability and handling. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a transmission device that achieves dual-side drive through a double chain, which makes the power transmission balanced and the driving efficiency high.

[0005] The technical solution of this utility model is:

[0006] This utility model provides a transmission device applied to walking equipment, comprising:

[0007] A frame assembly, including a first end and a second end disposed opposite to each other;

[0008] The left driven wheel assembly is located on the left side of the second end and includes a synchronously rotating left wheel and a left flywheel;

[0009] The right driven wheel assembly is located on the right side of the second end and includes a right wheel and a right flywheel that rotate synchronously.

[0010] The transmission assembly includes a differential that is driven and connected to the drive wheel, a left half-shaft and a right half-shaft disposed on the left and right sides of the differential and driven and connected to the differential, a left drive flywheel fixedly disposed on the left half-shaft, the left drive flywheel being driven and connected to the left flywheel through a left drive chain, and a right drive flywheel disposed on the right half-shaft, the right drive flywheel being driven and connected to the right flywheel through a right drive chain;

[0011] The drive wheel rotates and drives the left drive flywheel and the right drive flywheel to rotate through the differential, and drives the left wheel and the right wheel to rotate through the left drive chain and the right drive chain, respectively.

[0012] Furthermore, a variable speed flywheel is provided on the left half-shaft or the right half-shaft, the drive wheel is connected to the variable speed flywheel via a front drive chain, and the variable speed flywheel is connected to the differential.

[0013] Furthermore, the left wheel and the left flywheel are synchronously connected via a left rotating shaft, and the right wheel and the right flywheel are synchronously connected via a right rotating shaft.

[0014] Furthermore, both the left rotating shaft and the right rotating shaft are provided with a first positioning member and a second positioning member, the left wheel or the right wheel is provided with a first mating part that cooperates with the first positioning member, and the left flywheel or the right flywheel is provided with a second mating part that cooperates with the second positioning member.

[0015] Furthermore, it also includes a left rocker arm and a right rocker arm, each of which includes a first connecting end and a second connecting end disposed opposite to each other. The first connecting end is rotatably connected to the frame assembly, and the second connecting end is rotatably connected to the left rotation shaft / right rotation shaft.

[0016] Furthermore, the first connecting end is rotatably connected to the frame assembly via a locking assembly. The first connecting end includes two connecting arms, each with a first connecting hole. The frame assembly has a connecting channel. The locking assembly includes a locking screw and a locking screw cylinder, which pass through the first connecting hole and the connecting channel in sequence and are fixedly connected to the locking screw.

[0017] Furthermore, the locking screw is coaxially arranged with the left half-shaft / the right half-shaft.

[0018] Furthermore, shock absorber assemblies are provided between the left rocker arm and the right rocker arm and the frame assembly. The shock absorber assemblies include guide rods and shock absorber springs sleeved on the guide rods. One end of the guide rod is rotatably connected to the left rocker arm and the right rocker arm, and the other end is rotatably connected to the frame assembly.

[0019] Furthermore, both the left rocker arm and the right rocker arm are equipped with tensioning members, which are configured to adjust the tension of the left and right drive chains.

[0020] This utility model also provides a walking device, including a drive unit and the above-mentioned transmission device, wherein the drive unit is configured to drive the drive wheel.

[0021] The beneficial technical effects of this utility model are:

[0022] This utility model's transmission device features a simple structure, is easy to maintain, has fewer parts, reduces manufacturing costs, and lightens the overall weight of the transmission device, thus improving the maneuverability and energy efficiency of the mobile equipment. The differential transmits power from the drive wheel to the left and right half-shafts, which in turn drive the left and right wheels via the left and right drive flywheels, achieving efficient power distribution and ensuring that the left and right wheels receive appropriate power output under different road conditions, maintaining vehicle stability and maneuverability. Furthermore, the left and right wheels can automatically adjust their speed difference according to the mobile equipment's driving state (such as turning or uneven road surfaces) to improve ground adaptability, reduce wheel slippage or spinning, and thus enhance the mobile equipment's applicability and passability. In addition, the left and right wheels are connected to the left and right drive flywheels via left and right drive chains respectively, avoiding the power loss and uneven power transmission problems of traditional single-chain drives. This transmission device, which achieves dual-side drive through a double chain, not only ensures balanced power transmission and high driving efficiency, but also effectively shortens the power transmission path, reduces energy loss in the transmission links, and makes the power response speed faster. Attached Figure Description

[0023] Figure 1 It is a walking device conforming to Embodiment 1 of this utility model;

[0024] Figure 2 This is a walking device conforming to Embodiment 2 of this utility model;

[0025] Figure 3 yes Figure 1 A schematic diagram of the central transmission device (excluding the left and right wheels);

[0026] Figure 4 yes Figure 3 Enlarged view of the circled area;

[0027] Figure 5 yes Figure 3 Schematic diagram of the transmission assembly and rocker arm assembly;

[0028] Figure 6 yes Figure 1 Assembly diagram of the rocker arm assembly and driven wheel assembly.

[0029] Explanation of reference numerals in the attached figures:

[0030] Transmission device 100, frame assembly 10, extension arm 11, front triangle of frame 12, front fork 13, rear triangle of frame 14; drive sprocket 20, front drive chain 201, freewheel 202; driven wheel assembly 30, left wheel 311, left freewheel 312, right wheel 321, right freewheel 322, rotating shaft assembly 33, left rotating shaft 331, right rotating shaft 332, first positioning element 333, second positioning element 334; transmission assembly 40, differential 41, left half-shaft 42, left drive freewheel 43, left drive chain 44, right half-shaft 45, right... Active flywheel 46, right drive chain 47; rocker arm assembly 50, left rocker arm 51, right rocker arm 52, first connecting end 53, second connecting end 54, connecting arm 55, clearance space 56; shock absorption assembly 60, guide rod 61, shock absorption spring 62, first rotating end 63, second rotating end 64, locking assembly 70, locking screw 71, locking screw barrel 72, tensioning member 80; drive unit 210, motor 211, foot pedal assembly 212, power battery 213, steering wheel 220, handle assembly 230, seat 240, walking device 200. Detailed Implementation

[0031] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] Please see Figures 1 to 6 As shown, this utility model discloses a walking device 200. This walking device 200 can be a tricycle (such as...) Figure 1 reclining vehicles (such as) Figure 2 It can also refer to three-wheeled electric bicycles, three-wheeled bicycles, four-wheeled non-motorized vehicles (such as children's four-wheeled vehicles), etc. This utility model does not impose any restrictions here.

[0033] The walking device 200 includes a drive unit 210, a transmission device 100, a handle assembly 230, steering wheels 220, a seat 240, and a shock-absorbing assembly 60. The drive unit 210 provides power to the walking device 200, including manual drive, electric drive, and a hybrid of manual and electric drive. The transmission device 100 includes a frame assembly, driven wheel assembly 30, a transmission assembly 40, and a shock-absorbing assembly 60. In this embodiment, the driven wheel assembly 30 is a rear wheel assembly located at the rear of the frame assembly 10, while the steering wheels 220 are front wheels located at the front of the frame assembly 10. Of course, in other embodiments, the driven wheel assembly may also be located at the front of the frame assembly 10, while the steering wheels 220 may be located at the rear. This invention does not limit this.

[0034] It should be noted that this utility model Figure 1tricycles and Figure 2 The transmission device 100 used in the reclining scooter has the same structure. For clarity, the traveling device 200 will be referred to as such in the following instruction manual. Figure 1 The example of a tricycle will be described in detail, but it should not be limited to this.

[0035] Please see Figure 1 and combined Figures 3 to 6 As shown, this utility model discloses a tricycle. The tricycle includes a transmission device 100, a drive unit 210, a steering wheel 220, a handle assembly 230, a seat 240, and other structures.

[0036] Please see Figures 3 to 6 and combined Figure 1 As shown, the transmission device 100 includes a frame assembly 10, a driven wheel assembly 30, a rocker arm assembly 50, a shock absorber assembly 60, a drive wheel 20, and a transmission assembly 40.

[0037] The frame assembly 10, serving as the main structure of the tricycle, runs through both the front and rear ends of the tricycle, providing a mounting base for all components. The frame assembly 10 includes a first end and a second end arranged opposite each other. The first end is connected to the drive wheel 20, and the second end is connected to the driven wheel set, providing support and a mounting base for the entire transmission device 100.

[0038] The drive wheel 20 is rotatably mounted at the first end of the frame assembly 10, typically located at the front or middle of the traveling device 200, near the steering wheel 220. The drive wheel 20 is connected to the drive unit 210 and to the transmission assembly 40 via the front drive chain 201. The drive unit 210 drives the drive wheel 20 to rotate, which in turn drives the transmission assembly 40, thereby rotating the driven wheel assembly 30, thus enabling the traveling device 200 to move. The drive wheel 20 ensures efficient power transmission to the driven wheel assembly 30.

[0039] Optionally, the drive unit 210 can be manually driven or electrically driven. In this embodiment, the walking device 200 also includes a motor 211 and a foot pedal assembly 212 disposed near the drive wheel 20, as well as a power battery 213 electrically connected to the motor 211.

[0040] In this embodiment, a rear triangle 14 for carrying goods or passengers is provided at the rear of the frame assembly 10. A power battery 213 is disposed below the rear triangle 14. The power battery 213 is electrically connected to the motor 211 to drive the drive wheel 20 to rotate. Of course, in other embodiments, the power battery 213 may be disposed in other locations, such as near the motor 211.

[0041] In this embodiment, the pedal assembly 212 is electrically connected to the motor 211. When the pedal assembly 212 is pressed, the pedal force sensor detects the pressing signal and transmits it to the motor 211 controller. The motor 211 controller adjusts the output power of the motor 211 based on the signal strength and frequency. By providing assistance to the motor 211 through the pedal assembly 212, the motor 211 can utilize electrical energy more efficiently during operation. Furthermore, this collaborative working mode of human and electric power makes cycling easier, especially when climbing hills or carrying heavy loads, significantly reducing the rider's physical burden. Of course, in other embodiments, the pedal assembly 212 can also be directly connected to the drive wheel 20, providing power directly to the drive wheel 20 through pressing the pedal assembly 212. This invention does not limit this aspect.

[0042] The driven wheel assembly 30 includes a left driven wheel set and a right driven wheel set. The left driven wheel set and the right driven wheel set are respectively located on the left and right sides of the second end of the frame assembly 10. The driven wheel assembly 30 is connected to the drive wheel 20 through the transmission assembly 40, receives power, and drives the walking device 200 forward.

[0043] In this embodiment, the left driven wheel assembly is located on the left side of the second end, including a synchronously rotating left wheel 311 and a left flywheel 312. The right driven wheel assembly is located on the right side of the second end, including a synchronously rotating right wheel 321 and a right flywheel 322. The transmission assembly 40 includes a differential 41 that is drivenly connected to the drive wheel 20, a left half-shaft 42 and a right half-shaft 45 located on the left and right sides of the differential 41 and drivenly connected to the differential 41. A left drive flywheel 43 is fixedly mounted on the left half-shaft 42, and the left drive flywheel 43 is drivenly connected to the left flywheel 312 through a left transmission chain 44. A right drive flywheel 46 is mounted on the right half-shaft 45, and the right drive flywheel 46 is drivenly connected to the right flywheel 322 through a right transmission chain 47. The drive wheel 20 rotates, driving the left drive flywheel 43 and right drive flywheel 46 to rotate via the differential 41. The left drive chain 44 and right drive chain 47 then drive the left wheel 311 and right wheel 321 to rotate. In other words, the differential 41 transmits power from the drive wheel 20 to the left half-shaft 42 and right half-shaft 45, which in turn drive the left wheel 311 and right wheel 321 to rotate via the left drive flywheel 43 and right drive flywheel 46. This achieves efficient power distribution, ensuring that the left wheel 311 and right wheel 321 receive appropriate power output under different road conditions, maintaining vehicle stability and handling. Furthermore, the left wheel 311 and right wheel 321 can automatically adjust their speed difference according to the driving state of the mobile device 200 (such as turning or uneven road surfaces) to improve ground adaptability, reduce wheel slippage or spinning, and thus enhance the applicability and passability of the mobile device 200. Furthermore, the left wheel 311 and the right wheel 321 are connected to the left drive flywheel 43 and the right drive flywheel 46 respectively via the left drive chain 44 and the right drive chain 47, avoiding the power loss and uneven power transmission problems of traditional single-chain transmission. This transmission device 100, which achieves dual-side drive through double chains, not only ensures balanced power transmission and high driving efficiency, but also effectively shortens the power transmission path, reduces energy loss in the transmission links, and makes the power response speed faster. That is to say, in the transmission device 100 of this embodiment, the drive wheel 20 achieves dual-side driven wheel drive through double chains, resulting in balanced power transmission, high driving efficiency, and a simple structure that is easy to maintain, has fewer parts, reduces manufacturing costs, and also reduces the overall weight of the transmission device 100, improving the maneuverability and energy efficiency of the walking device 200. Of course, in other embodiments, the transmission component 40 can also have other structures, as long as it can provide the power on the drive wheel 20 to the left wheel 311 and the right wheel 321 respectively. This utility model does not limit this.

[0044] Furthermore, the left wheel 311 and the left flywheel 312 are synchronously connected via a left rotating shaft 331, and the right wheel 321 and the right flywheel 322 are synchronously connected via a right rotating shaft 332. The left and right drive shafts can be collectively referred to as the rotating shaft assembly 33. This arrangement ensures direct power transmission from the flywheel to the wheels, avoids relative slippage between the wheels and flywheel, and ensures smooth and efficient power transmission to the wheels, thereby improving the vehicle's acceleration performance and hill-climbing ability.

[0045] Furthermore, both the left rotating shaft 331 and the right rotating shaft 332 are provided with a first positioning element 333 and a second positioning element 334. The left wheel 311 or the right wheel 321 is provided with a first mating part that cooperates with the first positioning element 333, and the left flywheel 312 or the right flywheel 322 is provided with a second mating part that cooperates with the second positioning element 334. This arrangement ensures precise synchronous rotation of the wheels and flywheels, reducing slippage during transmission.

[0046] In this embodiment, the first positioning element 333 is a long key disposed on the rotating shaft assembly 33, and the second positioning element 334 is a short key disposed on the rotating shaft assembly 33. The first mating part is a first groove disposed on the left wheel 311 or the right wheel 321, and the second mating part is a second groove disposed on the left flywheel 312 or the right flywheel 322. Both the long key and the short key protrude from the rotating shaft assembly 33 and respectively mate with the first groove and the second groove to achieve quick positioning connection, thereby achieving a foolproof effect and preventing slippage of the wheels and flywheels during rotation, thus improving the accuracy of synchronous rotation.

[0047] Furthermore, a variable speed flywheel 202 is provided on the left half-shaft 42 or the right half-shaft 45. The drive wheel 20 is connected to the variable speed flywheel 202 via a front drive chain 201, and the variable speed flywheel 202 is connected to the differential 41. By providing the variable speed flywheel 202 on the left half-shaft 42 or the right half-shaft 45, the power of the drive wheel 20 can be transmitted to the variable speed flywheel 202 via the front drive chain 201, and then to the differential 41 via the variable speed flywheel 202. The variable speed flywheel 202 can select different speed ratios according to the rider's operation, thereby realizing multi-speed transmission, improving adaptability, and optimizing power transmission efficiency.

[0048] Furthermore, a rear gearbox that works in conjunction with the flywheel 202 is also provided on the front drive train 201.

[0049] Please refer to 3 to Figure 6As shown, the transmission device 100 also includes a rocker arm assembly 50 and a shock absorber assembly 60. The rocker arm assembly 50 and the shock absorber assembly 60 enable individual shock absorption for the two left wheels 311 and the right wheel 321, improving the comfort, stability, and maneuverability of the walking device 200.

[0050] The swingarm assembly 50 includes a left swingarm 51 and a right swingarm 52. Both the left and right swingarms 51 and 52 include a first connecting end 53 and a second connecting end 54 disposed opposite to each other. The first connecting end 53 is rotatably connected to the frame assembly 10, and the second connecting end 54 is rotatably connected to the left / right driven wheel set. Two shock-absorbing components 60 are respectively disposed between the left swingarm 51 and the frame assembly 10, and between the right swingarm 52 and the frame assembly 10. By setting independent shock-absorbing components 60 between the left swingarm 51 and the frame assembly 10, and between the right swingarm 52 and the frame assembly 10, independent shock absorption functions for the two driven wheel sets are achieved. This allows for more precise absorption of vibrations from the ground, reducing vibration transmission to the frame assembly 10 and the rider, thus improving riding comfort. The independent shock-absorbing components 60 avoid the delay in shock absorption effect and vibration transmission problems caused by overall linkage, ensuring the rapid response and efficient absorption of high-frequency vibrations by the shock-absorbing components 60. Furthermore, the independent shock absorber assembly 60 can automatically adjust the shock absorption force according to the load conditions, optimizing load-bearing performance. Additionally, the left and right driven wheel sets of this invention are connected to the frame assembly 10 via left rocker arm 51 and right rocker arm 52, respectively. This structure allows the driven wheels to independently adjust their contact angle and pressure with the ground under complex road conditions. When turning or traversing uneven surfaces, the left and right rocker arms 51 and 52 can rotate up and down around the first connecting end 53. Under the action of the shock absorber assembly 60, the two driven wheel sets can achieve flexible up-and-down movement under gravity, ensuring each driven wheel maintains good grip, thereby improving vehicle stability and handling. By setting independent shock absorber assemblies 60 at the two driven wheel sets and working in conjunction with the rocker arm assembly 50, this invention enables the walking device 200 to adaptively adjust under different road conditions, enhancing the overall user experience.

[0051] Optionally, in this embodiment, since the left rocker arm 51 and the right rocker arm 52 have the same structure, only the right rocker arm 52 will be described in detail here.

[0052] The right rocker arm 52 includes a first connecting end 53 and a second connecting end 54 disposed opposite to each other, and two connecting arms 55 connecting the first connecting end 53 and the second connecting end 54. A mounting portion for mounting the shock absorber assembly 60 and a clearance space 56 for accommodating the shock absorber assembly 60 are provided between the two connecting arms 55. By providing the mounting portion between the two connecting arms 55, the shock absorber assembly 60 can be precisely positioned and fixed. This design ensures that the shock absorber assembly 60 will not shift or shake during operation, thereby improving the stability of the entire shock absorption system. Furthermore, the design of the mounting portion allows the shock absorber assembly 60 to be tightly integrated inside the left rocker arm 51, reducing the occupation of external space and making the structure of the entire transmission device 100 more compact. In addition, the clearance space 56 between the two connecting arms 55 provides sufficient movement space for the shock absorber assembly 60. During the travel of the walking device 200, the shock absorber assembly 60 needs to extend and retract according to road conditions to absorb vibrations. The clearance space 56 ensures that the shock absorber assembly 60 is not interfered with by the left rocker arm 51 structure during movement, allowing it to extend and retract freely. This reduces friction and resistance between the shock absorber assembly 60 and the right rocker arm 52 during movement, improving the response speed and efficiency of the shock absorber system. Furthermore, the design of the mounting section and the clearance space 56 makes the installation and removal of the shock absorber assembly 60 more convenient. Maintenance personnel can quickly replace or repair the shock absorber assembly 60, reducing assembly time and maintenance costs.

[0053] Furthermore, the first connecting end 53 is rotatably connected to the frame assembly 10 via the locking assembly 70. This configuration ensures the stability and reliability of the connection, improves assembly flexibility and maintenance convenience. Moreover, the rotatable connection of the first connecting end 53 to the frame assembly 10 via the locking assembly 70 allows the left rocker arm 51 to rotate up and down around the first connecting end 53. This enables the left driven wheel set to independently adjust its contact angle and pressure with the ground according to road conditions, optimizing shock absorption performance and vehicle passability. It ensures that each driven wheel set maintains good grip under complex road conditions, thereby improving vehicle handling and stability. Additionally, the double locking mechanism of the locking assembly 70 can withstand large loads, ensuring that the walking device 200 maintains a stable connection and reliable shock absorption performance even under heavy loads.

[0054] The first connecting end 53 includes two connecting arms, each with a first connecting hole. The frame assembly 10 has a connecting channel. The locking assembly 70 includes a locking screw 71 and a locking bolt 72. The locking bolt 72 passes through the first connecting hole and the connecting channel and is fixedly connected to the locking screw 71. When the vehicle 200 (such as a tricycle) travels on a bumpy road, the right rocker arm 52 swings up and down around the center of the locking bolt 72, and absorbs vibrations through the shock absorption assembly 60, thereby reducing the vibration transmitted to the frame and the rider and improving riding comfort.

[0055] The second connecting end 54 is rotatably connected to the right driven wheel assembly via the rotating shaft assembly 33. Specifically, the second connecting end 54 is sleeved on the right rotating shaft 332 through the second connecting hole and is located between the first positioning member 333 and the second positioning member 334. When the right rotating shaft 332 rotates under the drive of the right flywheel 322, the right rocker arm 52 remains relatively stationary, so that the movement of the shock absorption system is relatively independent from the power transmission system, and the shock absorption system can respond more freely to the impact of the ground without being disturbed by the power transmission system.

[0056] Furthermore, the locking screw 72 is coaxially arranged with the left half-shaft 42 and the right half-shaft 45. This arrangement ensures that the length of the line connecting the centers of the right drive freewheel 46 and the right freewheel 322 is the same as the length of the connection between the first connecting end 53 and the second connecting end 54 of the right rocker arm 52. That is, when the right rocker arm 52 swings up and down around the center of the locking screw 72, the tension length of the right drive chain 47 remains constant, maintaining a stable tension state. This prevents slackness or over-tension due to the up-and-down movement of the right rocker arm 52, improving the stability and reliability of the transmission system. Moreover, the stable tension not only prevents excessive stretching or compression of the chain during movement, extending the service life of the chain and sprockets, but also reduces chain vibration and sway during movement, further reducing vibration transmission to the frame assembly 10 and the rider, thus improving vehicle comfort.

[0057] Furthermore, the shock absorber assembly 60 includes a guide rod 61 and a shock absorber spring 62 sleeved on the guide rod 61. The guide rod 61 includes a first rotating end 63 and a second rotating end 64 disposed opposite to each other. The first rotating end 63 is rotatably connected to the left rocker arm 51 / right rocker arm 52, and the second rotating end 64 is rotatably connected to the frame assembly 10. By sleeved on the guide rod 61, the shock absorber spring 62 can elastically deform upon impact with the ground, absorbing vibrations from the ground. This allows the driven wheel assembly to move flexibly up and down under the action of the shock absorber spring 62, improving shock absorption capability. By rotatably connecting both ends of the guide rod 61 to the left rocker arm 51 / right rocker arm 52 and the frame assembly 10 respectively, the stability of the shock absorber assembly 60 during movement is ensured. This reduces the risk of failure due to structural loosening or deformation, improving the reliability of the entire shock absorber system.

[0058] The first rotating end 63 of the guide rod 61 is at least partially located within the clearance space 56 and is rotatably connected to the two connecting arms via a first pivot. This arrangement provides sufficient space for the movement of the shock absorber assembly 60, ensuring that the guide rod 61 does not interfere with the connecting arms during vertical movement. The existence of the clearance space 56 allows the shock absorber assembly 60 to extend and retract freely, reducing movement resistance and improving the response speed and efficiency of the shock absorber system.

[0059] The frame assembly 10 has an extension arm 11 on the side facing the rocker arm assembly 50, and the second rotating end 64 is rotatably connected to the extension arm 11 via a second pivot. This arrangement enhances the connection strength between the shock absorber assembly 60 and the frame assembly 10. The rotatable connection not only provides sufficient freedom of movement but also ensures that the shock absorber assembly 60 can smoothly transmit force and torque during movement.

[0060] Furthermore, both the left rocker arm 51 and the right rocker arm 52 are equipped with tensioning members 80. The tensioning members 80 are configured to adjust the tension of the left drive chain 44 and the right drive chain 47. By setting the tensioning members 80, the tension of the drive chain can be adjusted according to actual needs, ensuring that the drive chain maintains an appropriate tension under different operating conditions, avoiding unstable power transmission or accelerated chain wear caused by slack or excessive tension. Moreover, the tensioning members 80 also ensure the stability of the drive chain during movement, reducing vibration and swaying, and improving the reliability of the transmission system.

[0061] The handlebar assembly 230 and steering wheel 220 are positioned near the first end (generally the front end) of the frame assembly 10. See also... Figure 1 As shown, the handlebar assembly 230 is mounted to the frame assembly 10 and the steering wheel 220 via the front triangle 12 of the frame. Furthermore, a front fork 13 is also provided between the steering wheel 220 and the front triangle 12 of the frame. The combination of the handlebar assembly 230 and the steering wheel 220 enables steering of the tricycle, allowing the rider to control the vehicle according to their intentions. Additionally, the handlebar assembly 230 provides hand support for the rider, facilitating balance and stability during riding. Furthermore, the handlebar assembly 230 integrates accelerator, brake levers, and other control devices for convenient rider operation.

[0062] The seat 240 is located in the middle or rear of the frame assembly 10, typically between the steering wheel 220 and the driven wheel assembly 30, providing a comfortable riding position for the rider.

[0063] In summary, the transmission device 100 of this utility model has a simple structure, is easy to maintain, has fewer parts, reduces manufacturing costs, and also reduces the overall weight of the transmission device 100, thereby improving the maneuverability and energy efficiency of the traveling equipment 200. The power of the drive wheel 20 is transmitted to the left half-shaft 42 and the right half-shaft 45 via the differential 41, which in turn drives the left wheel 311 and the right wheel 321 to rotate via the left drive flywheel 43 and the right drive flywheel 46, achieving efficient power distribution and ensuring that the left wheel 311 and the right wheel 321 receive appropriate power output under different road conditions, maintaining vehicle stability and maneuverability. Furthermore, the left wheel 311 and the right wheel 321 can automatically adjust their speed difference according to the traveling status of the traveling equipment 200 (such as turning or uneven road surfaces) to improve ground adaptability, reduce wheel slippage or spinning, and thus improve the applicability and passability of the traveling equipment 200. Furthermore, the left wheel 311 and the right wheel 321 are connected to the left drive flywheel 43 and the right drive flywheel 46 respectively via the left drive chain 44 and the right drive chain 47, avoiding the power loss and uneven power transmission problems of traditional single-chain drives. This transmission device 100, which achieves dual-side drive through dual chains, not only ensures balanced power transmission and high driving efficiency, but also effectively shortens the power transmission path, reduces energy loss in the transmission links, and results in faster power response.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A transmission device, applied to a walking device, characterized in that, include: The frame assembly (10) includes a first end and a second end disposed opposite to each other; An active wheel (20) is rotatably mounted at the first end; The left driven wheel assembly is located on the left side of the second end and includes a left wheel (311) and a left flywheel (312) that rotate synchronously. The right driven wheel assembly is located on the right side of the second end and includes a right wheel (321) and a right flywheel (322) that rotate synchronously. The transmission assembly (40) includes a differential (41) that is connected to the drive wheel (20), a left half-shaft (42) and a right half-shaft (45) that are disposed on the left and right sides of the differential (41) and connected to the differential (41). A left drive flywheel (43) is fixedly disposed on the left half-shaft (42), and the left drive flywheel (43) is connected to the left flywheel (312) through a left drive chain (44). A right drive flywheel (46) is disposed on the right half-shaft (45), and the right drive flywheel (46) is connected to the right flywheel (322) through a right drive chain (47). The drive wheel (20) rotates and drives the left drive flywheel (43) and the right drive flywheel (46) to rotate through the differential (41), and drives the left wheel (311) and the right wheel (321) to rotate through the left transmission chain (44) and the right transmission chain (47).

2. The transmission device according to claim 1, characterized in that, A variable speed flywheel (202) is provided on the left half shaft (42) or the right half shaft (45). The drive wheel (20) is connected to the variable speed flywheel (202) through the front drive chain (201). The variable speed flywheel (202) is connected to the differential (41).

3. The transmission device according to any one of claims 1 to 2, characterized in that, The left wheel (311) and the left flywheel (312) are synchronously connected via the left rotating shaft (331), and the right wheel (321) and the right flywheel (322) are synchronously connected via the right rotating shaft (332).

4. The transmission device according to claim 3, characterized in that, Both the left rotating shaft (331) and the right rotating shaft (332) are provided with a first positioning member (333) and a second positioning member (334). The left wheel (311) or the right wheel (321) is provided with a first mating part that cooperates with the first positioning member (333). The left flywheel (312) or the right flywheel (322) is provided with a second mating part that cooperates with the second positioning member (334).

5. The transmission device according to claim 3, characterized in that, It also includes a left rocker arm (51) and a right rocker arm (52), each of which includes a first connecting end (53) and a second connecting end (54) disposed opposite to each other. The first connecting end (53) is rotatably connected to the frame assembly (10), and the second connecting end (54) is rotatably connected to the left rotating shaft (331) / right rotating shaft (332).

6. The transmission device according to claim 5, characterized in that, The first connecting end (53) is rotatably connected to the frame assembly (10) via a locking assembly (70). The first connecting end (53) includes two connecting arms, each with a first connecting hole. The frame assembly (10) has a connecting channel. The locking assembly (70) includes a locking screw (71) and a locking screw cylinder (72). The locking screw cylinder (72) passes through the first connecting hole and the connecting channel in sequence and is fixedly connected to the locking screw (71).

7. The transmission device according to claim 6, characterized in that, The locking screw (72) is coaxially arranged with the left half-shaft (42) and the right half-shaft (45).

8. The transmission device according to claim 5, characterized in that, Both the left rocker arm (51) and the right rocker arm (52) are provided with shock absorber components (60) between them and the frame assembly (10). The shock absorber component (60) includes a guide rod (61) and a shock absorber spring (62) sleeved on the guide rod (61). One end of the guide rod (61) is rotatably connected to the left rocker arm (51) and the right rocker arm (52), and the other end is rotatably connected to the frame assembly (10).

9. The transmission device according to claim 5, characterized in that, Both the left rocker arm (51) and the right rocker arm (52) are provided with tensioning members (80), which are configured to adjust the tension of the left drive chain (44) and the right drive chain (47).

10. A walking device, characterized in that, include: The drive unit (210) and the transmission device as described in any one of claims 1 to 9, wherein the drive unit (210) is configured to drive the drive wheel (20).

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