Transmission mechanism, vehicle body and running equipment

Abstract

The present invention discloses a transmission mechanism, a vehicle body, and a traveling device, and relates to the technical field of traveling devices. The transmission mechanism includes a telescopic shaft assembly, a driving wheel, and a driven wheel; the telescopic shaft assembly can be extended and retracted along its axial direction; the driving wheel is meshedly connected to one end of the telescopic shaft assembly, and the driving wheel can rotate around its axis under external force, and cause the telescopic shaft assembly to rotate around the axis of the telescopic shaft assembly; the driven wheel is meshedly connected to the end of the telescopic shaft assembly away from the driving wheel, so that it can rotate around the axis of the driven wheel driven by the rotation of the telescopic shaft assembly, and the driven wheel is used to drive the rotation of external components. The present invention solves the technical problems of chain transmission in the prior art, such as the chain easily falling off and the large size.

Description

Technical Field

[0001] The present invention relates to the technical field of traveling equipment, and in particular to a transmission mechanism, a vehicle body and a traveling equipment. Background Art

[0002] Most walking devices such as bicycles currently use chains to transmit power. During use, the chain is prone to falling off, affecting the user experience. In addition, the existing chain transmission method has the problem of being large in size and difficult to adjust. Summary of the Invention

[0003] In view of this, the present invention provides a transmission mechanism, a vehicle body and a traveling device, which are used to solve the technical problems in the prior art that chain transmission is prone to chain falling and has a large size.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution:

[0005] A transmission mechanism, comprising:

[0006] A telescopic shaft assembly capable of extending and retracting along its axial direction;

[0007] a driving wheel meshingly connected to one end of the telescopic shaft assembly, wherein the driving wheel is capable of rotating around its axis under an external force and causing the telescopic shaft assembly to rotate around its axis;

[0008] and a driven wheel meshingly connected to one end of the telescopic shaft assembly away from the driving wheel so as to be rotatable around the axis of the driven wheel driven by the rotation of the telescopic shaft assembly, wherein the driven wheel is used to drive the external component to rotate.

[0009] In some embodiments of the transmission mechanism, the telescopic shaft assembly includes a main body, a first transmission member, and a second transmission member. The main body is capable of extending and retracting along its axial direction. The main body has a first end and a second end opposite to each other. The first transmission member is sleeved on the first end and meshed with the driving wheel. The second transmission member is sleeved on the second end and meshed with the driven wheel.

[0010] The axis of the driving wheel is parallel to the axis of the driven wheel, and the axis of the driving wheel is perpendicular to the axial direction of the telescopic shaft assembly.

[0011] In some embodiments of the transmission mechanism, the transmission mechanism further includes a first box body and a second box body, the driving wheel and the first transmission member are accommodated in the first box body, the first end portion extends into the first box body, the driven wheel and the second transmission member are accommodated in the second box body, and the second end portion extends into the second box body.

[0012] In order to solve the above technical problems, the present invention adopts the following technical solution:

[0013] A vehicle body, comprising the transmission mechanism described in the above embodiment, wherein the transmission mechanism has a retracted state and an extended state, the vehicle body further comprising a frame and a first wheel assembly, the first wheel assembly being rotatably connected to the frame, one end of the transmission mechanism being rotatably connected to the frame, and the driven wheel at the other end being connected to the first wheel assembly, the driven wheel being configured to drive the first wheel assembly to rotate;

[0014] The first wheel assembly has a first deployed position away from the frame and a first folded position close to the frame in its rotation path relative to the frame. The first wheel assembly can be maintained in the first deployed position when placed on a support surface. During the process of the first wheel assembly rotating from the first deployed position to the first folded position, the transmission mechanism can be converted from the extended state to the retracted state.

[0015] In some embodiments of the vehicle body, the vehicle body further comprises a second wheel assembly and a fastening assembly, the second wheel assembly being rotatably connected to the vehicle frame, the second wheel assembly having a second deployed position away from the first wheel assembly and a second folded position close to the first wheel assembly in a rotational path of the second wheel assembly relative to the vehicle frame;

[0016] The fastening assembly is mounted on the vehicle frame. The fastener assembly is used to lock or release the second wheel assembly. When the fastening assembly locks the second wheel assembly, the second wheel assembly is maintained in the second deployed position.

[0017] In some embodiments of the vehicle body, the vehicle frame is provided with a first connection portion relative to the second wheel assembly, and the second wheel assembly is provided with a second connection portion rotatably connected to the first connection portion;

[0018] The fastening assembly includes a screw and a clamping plate, the screw is threadedly connected to the first connecting part, and the clamping plate is connected to the end of the screw. When the screw rotates relative to the first connecting part, the clamping plate can simultaneously clamp the first connecting part and the second connecting part, so that the second wheel assembly is maintained in the second expanded position.

[0019] In some embodiments of the vehicle body, the rotation plane of the first wheel assembly is a first plane, the rotation plane of the second wheel assembly is a second plane, and the first plane is perpendicular to the second plane.

[0020] In some embodiments of the vehicle body, the first wheel assembly includes a first wheel and a first rotating frame, the first wheel is mounted on the first rotating frame and can rotate relative to the first rotating frame under the drive of the driven wheel, the first rotating frame is rotatably connected to the vehicle frame, and has a first deployed position in which the first wheel is away from the vehicle frame, and a first folded position in which the first wheel is close to the vehicle frame;

[0021] The first rotating frame abuts against the vehicle frame when the first wheel is in the first deployed position. When the first wheel is in the first deployed position and placed on a supporting surface, the supporting force given to the first wheel by the supporting surface can make the first rotating frame tightly abut against the vehicle frame, so that the first wheel is maintained in the first deployed position.

[0022] In order to solve the above technical problems, the present invention adopts the following technical solution:

[0023] A walking device includes the vehicle body described in the above embodiment, and further includes a driving mechanism, which is installed on the vehicle frame and is used to drive the driving wheel to rotate.

[0024] In some embodiments of the walking device, the driving mechanism includes a central shaft, a first crank and a second crank, one end of the central shaft is connected to the first crank, and the other end is connected to the second crank, the first crank and the second crank are both used to receive external force to drive the central shaft to rotate, the central shaft is passed through the frame, and the active part is mounted on and fixedly connected to the central shaft to rotate with the central shaft.

[0025] Implementing the embodiments of the present invention will have at least the following beneficial effects:

[0026] The above-mentioned transmission mechanism is applied to the vehicle body and traveling equipment, and can replace the chain transmission method in the vehicle body and traveling equipment. Specifically, the transmission mechanism of the present invention does not adopt chain transmission, but relies on a transmission method that cooperates with a driving wheel, a telescopic shaft assembly and a driven wheel. Specifically, one end of the telescopic shaft assembly is meshed and connected to the driving wheel, and the other end is meshed and connected to the driven wheel. Under such a setting, after external force is applied to the driving wheel, it can drive the telescopic shaft assembly and the driven wheel to rotate in turn, thereby conveniently driving external components such as the first wheel assembly in the vehicle body to rotate, thereby solving the technical problem of the existing chain transmission method that the chain is prone to falling off, and at the same time, the user does not need to worry about the oil on the chain dirtying his clothes. In addition, the telescopic shaft assembly of the transmission mechanism of the present invention also has the function of axial contraction, so that the volume can be reduced, thereby solving the technical problem of the large volume of the existing chain transmission.

[0027] After the above-mentioned vehicle body and traveling equipment adopt the above-mentioned transmission mechanism, since the transmission mechanism has the function of being able to retract, when the first wheel assembly is rotated to the first folding position relative to the frame, the transmission mechanism can be transformed into a retracted state. Compared with the existing chain transmission method, it can be more suitable for folding vehicle bodies and traveling equipment, and the size after folding is smaller, more space-saving, and there is no need to worry about the chain length problem, so that the vehicle body and traveling equipment can be easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 1 Schematic diagram of the structure of a walking device in one embodiment when the first wheel is located in a first deployed position and the second wheel is located in a second deployed position;

[0030] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the walking equipment shown;

[0031] Figure 3 is a structural schematic diagram of a walking device in an embodiment when the first wheel is located in a first folding position;

[0032] Figure 4 A schematic diagram of a walking device in one embodiment when the first wheel is in a first folding position and the second wheel is in a second folding position;

[0033] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A.

[0034] in:

[0035] 1. Telescopic shaft assembly; 11. Main body; 111. First end; 112. Second end; 12. First transmission member; 13. Second transmission member; 2. Driving wheel; 3. Driven wheel; 4. First box body; 5. Second box body;

[0036] 6. Frame; 61. Long section; 62. Short section; 63. First connecting portion; 64. Projection; 7. First wheel assembly; 71. First wheel; 72. First turret; 73. Projection plate; 8. Second wheel assembly; 81. Second wheel; 82. Second turret; 83. Second connecting portion; 9. Fastening assembly; 91. Screw; 92. Clamping plate;

[0037] 10. Driving mechanism; 101. Middle shaft; 102. First crank; 103. Second crank. DETAILED DESCRIPTION

[0038] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] like Figure 1-5 As shown, in one embodiment of a transmission mechanism, the transmission mechanism includes a telescopic shaft assembly 1, a driving wheel 2, and a driven wheel 3. The telescopic shaft assembly 1 is capable of extending and retracting along its axial direction. The driving wheel 2 is meshedly connected to one end of the telescopic shaft assembly 1. The driving wheel 2 can rotate about its axis under external force, causing the telescopic shaft assembly 1 to rotate about its axis. The driven wheel 3 is meshedly connected to the end of the telescopic shaft assembly 1 away from the driving wheel 2, so that it can rotate about the axis of the driven wheel 3 driven by the rotation of the telescopic shaft assembly 1. The driven wheel 3 is used to drive the rotation of external components.

[0042] In this embodiment, the transmission mechanism of this embodiment does not adopt a chain drive, but relies on a transmission method in which the driving wheel 2, the telescopic shaft assembly 1 and the driven wheel 3 cooperate. Specifically, one end of the telescopic shaft assembly 1 is meshed and connected to the driving wheel 2, and the other end is meshed and connected to the driven wheel 3. Under such a configuration, after external force is applied to the driving wheel 2, the telescopic shaft assembly 1 and the driven wheel 3 can be driven to rotate in sequence, thereby conveniently driving external components such as the first wheel assembly 7 in the vehicle body to rotate, thereby solving the technical problem of the existing chain drive method that the chain is prone to falling off, and at the same time, the user does not need to worry about the oil on the chain dirtying his clothes. In addition, the telescopic shaft assembly 1 of the transmission mechanism of this embodiment also has the function of axial contraction, thereby reducing the volume, thereby solving the technical problem of the large volume of the existing chain drive.

[0043] Specifically, the transmission mechanism can be applied to a bicycle body and can be used to replace the chain transmission structure on an existing bicycle body. Correspondingly, the external component can be the rear wheel or the front wheel of the bicycle.

[0044] In one embodiment of the transmission mechanism, the telescopic shaft assembly 1 includes a main body 11, a first transmission member 12, and a second transmission member 13. The main body 11 is capable of extending and retracting along its axial direction. The main body 11 has a first end 111 and a second end 112 that are opposite to each other. The first transmission member 12 is sleeved on the first end 111 and meshed with the driving wheel 2. The second transmission member 13 is sleeved on the second end 112 and meshed with the driven wheel 3. The axis of the driving wheel 2 is parallel to the axis of the driven wheel 3, and the axis of the driving wheel 2 is perpendicular to the axial direction of the telescopic shaft assembly 1.

[0045] In this embodiment, the main body 11 can be a stepped shaft structure, wherein the larger diameter section of the shaft 101 is hollow, allowing the smaller diameter section to extend into it, thereby forming a contraction and extension. The first transmission member 12, the second transmission member 13, the driving wheel 2, and the driven wheel 3 can all be bevel gear structures. It is understood that the two meshing bevel gears have their axes perpendicular to each other. This allows the axial direction of the driving wheel 2 to be parallel to the axial direction of the driven wheel 3, making it convenient for the user to apply force in a direction parallel to the rotation plane of the external component. When applied to a bicycle, this does not change the existing force application habits.

[0046] In an embodiment of the transmission mechanism, the transmission mechanism also includes a first box body 4 and a second box body 5, the driving wheel 2 and the first transmission member 12 are accommodated in the first box body 4, the first end 111 extends into the first box body 4, the driven wheel 3 and the second transmission member 13 are accommodated in the second box body 5, and the second end 112 extends into the second box body 5.

[0047] In this embodiment, by providing the first box body 4 and the second box body 5, it is possible to easily accommodate and protect the driving wheel 2, the first transmission member 12, the driven wheel 3 and the second transmission member 13, thereby preventing the driving wheel 2, the first transmission member 12, the driven wheel 3 and the second transmission member 13 from being exposed to the outside and affecting the rotation.

[0048] The present invention also relates to a vehicle body, comprising the transmission mechanism of the foregoing embodiment, wherein the transmission mechanism has a retracted state and an extended state. The vehicle body also includes a frame 6 and a first wheel assembly 7. The first wheel assembly 7 is rotatably connected to the frame 6. One end of the transmission mechanism is rotatably connected to the frame 6, and a driven wheel 3 at the other end is connected to the first wheel assembly 7. The driven wheel 3 is used to drive the first wheel assembly 7 to rotate. The first wheel assembly 7 has a first deployed position away from the frame 6 and a first folded position close to the frame 6 in its rotational path relative to the frame 6. The first wheel assembly 7 can be maintained in the first deployed position when placed on a support surface. During the process of the first wheel assembly 7 rotating from the first deployed position to the first folded position, the transmission mechanism can be converted from the extended state to the retracted state.

[0049] In this embodiment, since the transmission mechanism has the function of being able to retract, when the first wheel assembly 7 is rotated to the first folding position relative to the frame 6, the transmission mechanism can be changed to a retracted state. Compared with the existing chain transmission method, it can be more suitable for folding vehicle bodies and walking equipment, and the size after folding is smaller, more space-saving, and there is no need to worry about the chain length problem, so that the vehicle body and walking equipment can be easy to carry.

[0050] It is understood that when the first wheel assembly 7 is rotated from the first folded position to the first unfolded position, the transmission mechanism can be rotated from the contracted state to the extended state. The support surface can be the ground, a work surface, or the like.

[0051] In addition, the application scope of the vehicle body in this embodiment is not limited to two-wheeled bicycles, but can also be applied to single-wheeled fitness bicycles, so only one first wheel assembly 7 is required.

[0052] In one embodiment of the vehicle body, the vehicle body further includes a second wheel assembly 8 and a fastening assembly 9. The second wheel assembly 8 is rotatably connected to the vehicle frame 6. The second wheel assembly 8 has a second deployed position away from the first wheel assembly 7 and a second folded position close to the first wheel assembly 7 in its rotation path relative to the vehicle frame 6. The fastening assembly 9 is mounted on the vehicle frame 6. The fastening assembly is used to lock or release the second wheel assembly 8. When the fastening assembly 9 locks the second wheel assembly 8, it maintains the second wheel assembly 8 in the second deployed position.

[0053] In combination with the previous embodiment, the first wheel assembly 7 and the second wheel assembly 8 are respectively the front and rear wheels. By providing the second wheel assembly 8, the vehicle body can move stably. The second wheel assembly 8 in this embodiment is also rotatably connected to the frame 6. In this way, the second wheel assembly 8 can also be folded. Combined with the folding of the first wheel assembly 7, it can greatly reduce the overall length span.

[0054] Specifically, the frame 6 can be an L-shaped structural member, having a long section 61 and a short section 62 connected to each other, the opening of the frame 6 faces the first wheel assembly 7, and when the first wheel assembly 7 and the second wheel assembly 8 are placed on the ground, the end of the short section 62 away from the long section 61 is closer to the ground than the long section 61, the first wheel assembly 7 is rotatably connected to the short section 62, and the second wheel assembly 8 is rotatably connected to the end of the long section 61 away from the short section 62. It can be understood that in this embodiment, when the first wheel assembly 7 is in the first folded position, it can be between the second wheel assembly 8 (in the second unfolded position) and the short section 62. Of course, in order to reduce the length of the long section 61 and to avoid colliding with the second wheel assembly 8 during the rotation of the first wheel assembly 7, the second wheel assembly 8 can be folded first and then the first wheel assembly 7.

[0055] In one embodiment of the vehicle body, the vehicle frame 6 is provided with a first connection portion 63 relative to the second wheel assembly 8, and the second wheel assembly 8 is provided with a second connection portion 83 rotatably connected to the first connection portion 63. The fastening assembly 9 includes a screw 91 and a clamping plate 92. The screw 91 is threadedly connected to the first connection portion 63, and the clamping plate 92 is connected to the end of the screw 91. When the screw 91 rotates relative to the first connection portion 63, the clamping plate 92 can simultaneously clamp the first connection portion 63 and the second connection portion 83, thereby maintaining the second wheel assembly 8 in the second deployed position.

[0056] In this embodiment, specifically, the first connecting part 63 and the second connecting part 83 can be plate-like structural parts, and the two can be rotatably connected through a rotating shaft. The clamping plate 92 can be a U-shaped plate-like structural part. The U-shaped opening of the clamping plate 92 can clamp the first connecting part 63 and the second connecting part 83 in the process of following the movement of the screw rod 91, thereby fixing and clamping the first connecting part 63 and the second connecting part 83.

[0057] In one embodiment of the vehicle body, the rotation plane of the first wheel assembly 7 is a first plane, the rotation plane of the second wheel assembly 8 is a second plane, and the first plane is perpendicular to the second plane.

[0058] In the previous embodiment, the rotation direction of the second wheel assembly 8 can be opposite to that of the first wheel assembly 7, forming a counterclockwise rotation and a clockwise rotation. In the present embodiment, specifically, taking the vehicle body placed on the ground as an example, the first plane is a vertical plane, and the second plane is a horizontal plane. When the first wheel assembly 7 is in the first folding position and the second wheel assembly 8 is in the second folding position, the first wheel assembly 7 and the second wheel assembly 8 are stacked on a horizontal plane, and the folded size and occupied space are smaller, which is more convenient for users to place.

[0059] Specifically, the second wheel assembly 8 includes a second wheel 81 and a second rotating frame 82 , and the second wheel 81 is rotatably connected to the second rotating frame 82 .

[0060] In one embodiment of the vehicle body, the first wheel assembly 7 includes a first wheel 71 and a first rotating frame 72. The first wheel 71 is mounted on the first rotating frame 72 and can rotate relative to the first rotating frame 72 under the drive of the driven wheel 3. The first rotating frame 72 is rotatably connected to the vehicle frame 6 and has a first deployed position in which the first wheel 71 is away from the vehicle frame 6, and a first folded position in which the first wheel 71 is close to the vehicle frame 6. The first rotating frame 72 abuts against the vehicle frame 6 when the first wheel 71 is in the first deployed position. When the first wheel 71 is in the first deployed position and placed on a support surface, the support force exerted by the support surface on the first wheel 71 can cause the first rotating frame 72 to tightly abut against the vehicle frame 6, thereby maintaining the first wheel 71 in the first deployed position.

[0061] In this embodiment, by setting the first rotating frame 72 to abut against the frame 6 when the first wheel 71 is in the first deployed position, an abutment surface is formed here. On the other hand, when the first wheel 71 is placed on a supporting surface such as the ground, another abutment surface can be formed. Under the action of the two abutment surfaces, the position of the first wheel 71 can be maintained, thereby preventing the first rotating frame 72 from rotating relative to the frame 6 during walking, thereby improving stability.

[0062] Specifically, in combination with the previous embodiment, a protrusion 64 can be provided on the side of the short section 62 of the vehicle frame 6 facing away from the second wheel assembly 8, and a protruding plate 73 can be provided on the first rotating frame 72. When the first wheel 71 is in the first deployed position, the protruding plate 73 abuts against the protruding plate 64, thereby limiting rotation. The supporting force exerted by the supporting surface on the first wheel 71 causes the protruding plate 73 to press against the protruding plate 64, thereby tightly abutting the protruding plate 73 and the protruding plate 64. Preferably, when the vehicle body is placed horizontally, the surface of the protruding plate 73 relative to the protruding plate 64 is vertical, the surface of the protruding plate 73 relative to the protruding plate 64 is also vertical, and the first rotating member extends in the horizontal direction. At this time, the axial direction of the main body 11 is also horizontal. Such a configuration can improve transmission efficiency and achieve a labor-saving effect.

[0063] In combination with the previous embodiment of the vehicle body, when the transmission mechanism is provided with a first box body 4 and a second box body 5, it can be understood that the first box body 4 is rotatably connected to the short section 62 of the vehicle frame 6, and the second box body 5 is rotatably connected to the first rotating frame 72.

[0064] In combination with the above embodiment of the vehicle body, in order to facilitate the rotation of the first rotating frame 72 , a bearing may be provided on the rotation connection shaft between the first rotating frame 72 and the vehicle frame 6 .

[0065] The present invention further relates to a walking device, comprising the vehicle body in the foregoing embodiment, and further comprising a driving mechanism 10 , which is mounted on the vehicle frame 6 and is used to drive the driving wheel 2 to rotate.

[0066] In this embodiment, by applying the vehicle body in the above embodiment, the size after folding becomes smaller, which is more convenient for users to put away, such as placing it in a trunk, and can also replace the existing chain transmission method.

[0067] In addition, the walking device further includes a driving mechanism 10 , and the driving mechanism 10 may be powered by a user or by a motor or other device.

[0068] In an embodiment of a walking device, the driving mechanism 10 includes a central axis 101, a first crank 102 and a second crank 103. One end of the central axis 101 is connected to the first crank 102, and the other end is connected to the second crank 103. The first crank 102 and the second crank 103 are both used to receive external force to drive the central axis 101 to rotate. The central axis 101 is passed through the frame 6, and the active part is mounted and fixedly connected to the central axis 101 to rotate with the central axis 101.

[0069] In this embodiment, the walking device can be a bicycle. The first crank 102 and the second crank 103 are provided to receive force from the user and apply force to the central axle 101, thereby driving the active member to rotate. Specifically, when the transmission mechanism includes the first and second housings 4 and 5, the central axle 101 passes through the short section 62 of the frame 6 and the first housing 4.

[0070] In addition, the walking device can also be provided with existing components such as a seat, a rear wheel baffle, a handle, a basket, etc., so as to enrich the functions of the walking device.

[0071] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A vehicle body, characterized in that: It includes a transmission mechanism, a frame and a first wheel assembly, wherein the transmission mechanism includes a telescopic shaft assembly, a driving wheel and a driven wheel; a telescopic shaft assembly capable of extending and retracting along its axial direction so as to switch between a retracted state and an extended state; a driving wheel meshingly connected to one end of the telescopic shaft assembly, wherein the driving wheel is capable of rotating around its axis under an external force and causing the telescopic shaft assembly to rotate around its axis; and a driven wheel meshingly connected to an end of the telescopic shaft assembly away from the driving wheel so as to be rotatable around the axis of the driven wheel driven by the rotation of the telescopic shaft assembly, wherein the driven wheel is used to drive the external component to rotate; The telescopic shaft assembly includes a main body, a first transmission member, and a second transmission member. The main body is capable of extending and retracting along its axial direction. The main body has a first end and a second end opposite to each other. The first transmission member is sleeved on the first end and meshed with the driving wheel. The second transmission member is sleeved on the second end and meshed with the driven wheel. The axis of the driving wheel is parallel to the axis of the driven wheel, and the axis of the driving wheel is perpendicular to the axial direction of the telescopic shaft assembly; The transmission mechanism further includes a first box body and a second box body, wherein the driving wheel and the first transmission member are accommodated in the first box body, and the first end portion extends into the first box body, and the driven wheel and the second transmission member are accommodated in the second box body, and the second end portion extends into the second box body; The first wheel assembly is rotatably connected to the frame, one end of the transmission mechanism is rotatably connected to the frame, and the driven wheel at the other end is connected to the first wheel assembly, and the driven wheel is used to drive the first wheel assembly to rotate; The first wheel assembly has a first deployed position away from the frame and a first folded position close to the frame in its rotation path relative to the frame. The first wheel assembly can be maintained in the first deployed position when placed on a support surface. During the process of the first wheel assembly rotating from the first deployed position to the first folded position, the transmission mechanism can be converted from the extended state to the retracted state.

2. The vehicle body according to claim 1, wherein: The vehicle body further includes a second wheel assembly and a fastening assembly, wherein the second wheel assembly is rotatably connected to the vehicle frame, and wherein the second wheel assembly has a second deployed position away from the first wheel assembly and a second folded position close to the first wheel assembly in a rotation path of the second wheel assembly relative to the vehicle frame; The fastening assembly is mounted on the vehicle frame and is used to lock or release the second wheel assembly. When the fastening assembly locks the second wheel assembly, the second wheel assembly is maintained in the second deployed position.

3. The vehicle body according to claim 2, wherein: The frame is provided with a first connection portion relative to the second wheel assembly, and the second wheel assembly is provided with a second connection portion rotatably connected to the first connection portion; The fastening assembly includes a screw and a clamping plate, the screw is threadedly connected to the first connecting part, and the clamping plate is connected to the end of the screw. When the screw rotates relative to the first connecting part, the clamping plate can simultaneously clamp the first connecting part and the second connecting part, so that the second wheel assembly is maintained in the second expanded position.

4. The vehicle body according to claim 3, wherein: The rotation plane of the first wheel assembly is a first plane, the rotation plane of the second wheel assembly is a second plane, and the first plane is perpendicular to the second plane.

5. The vehicle body according to any one of claims 2 to 4, characterized in that: The first wheel assembly includes a first wheel and a first rotating frame, wherein the first wheel is mounted on the first rotating frame and can rotate relative to the first rotating frame under the drive of the driven wheel, and the first rotating frame is rotatably connected to the frame and has a first deployed position in which the first wheel is away from the frame, and a first folded position in which the first wheel is close to the frame; The first rotating frame abuts against the vehicle frame when the first wheel is in the first deployed position. When the first wheel is in the first deployed position and placed on a supporting surface, the supporting force given to the first wheel by the supporting surface can make the first rotating frame tightly abut against the vehicle frame, so that the first wheel is maintained in the first deployed position.

6. A walking device, characterized in that: Comprising the vehicle body according to any one of claims 1 to 5, the walking device further comprises a driving mechanism, which is mounted on the vehicle frame and is used to drive the driving wheel to rotate.

7. The walking device according to claim 6, characterized in that: The driving mechanism includes a central shaft, a first crank and a second crank. One end of the central shaft is connected to the first crank, and the other end is connected to the second crank. The first crank and the second crank are both used to receive external force to drive the central shaft to rotate. The central shaft is passed through the frame, and the active part is mounted on and fixedly connected to the central shaft to rotate with the central shaft.

Images