Brake mechanism and wheeled carrying apparatus

Abstract

This invention discloses a braking mechanism and a wheeled vehicle, including a drive member and a braking assembly. The braking assembly includes a drive pin, a linkage, an actuator, a pusher, and a locking member. The drive pin is connected to one end of the linkage, and the other end of the linkage is connected to the actuator. The actuator is movably disposed within the wheel seat of the wheeled vehicle. The pusher is movably disposed within the actuator and is connected to the locking member. The drive member drives the drive pin of the braking assembly to move, thereby driving the actuator to move via the linkage. The actuator drives the pusher to move, and the pusher drives the locking member to move, thereby locking or unlocking the wheel.

Description

[Technical Field]

[0001] This invention relates to a wheeled vehicle, and more particularly to a braking mechanism and a wheeled vehicle having the mechanism. [Previous Technology]

[0002] Existing wheeled vehicles generally have braking mechanisms. When the wheeled vehicle stops, simply pressing the brake pedal locks the wheels, preventing movement, avoiding accidents, and improving safety. However, existing wheeled vehicle braking mechanisms generally come in two types: one locks a single wheel, requiring two separate braking mechanisms for each rear wheel, and the other locks both wheels simultaneously. Furthermore, existing wheeled vehicles typically have swivel wheels at the front, but the rear wheels cannot rotate in all directions. This makes operation inconvenient and less flexible in certain situations, such as lateral movement. Some wheeled vehicles with swivel wheels at both the front and rear lack a directional mechanism for the rear wheels, allowing them to easily rotate during normal forward movement, which in turn affects the vehicle's movement. [Summary of the Invention]

[0003] The present invention provides a braking mechanism suitable for locking the wheels of a wheeled vehicle, including a driving member and a braking assembly. The braking assembly includes a driving pin, a linkage, an actuator, a pushing member, and a locking member. The driving pin is connected to one end of the linkage, and the other end of the linkage is connected to the actuator. The actuator is movably disposed within the wheel seat of the wheeled vehicle. The pushing member is movably disposed within the actuator and is connected to the locking member. The driving member drives the driving pin of the braking assembly to move, so as to drive the actuator to move through the linkage, thereby causing the actuator to drive the locking member to move, so as to lock or unlock the wheel.

[0004] In one embodiment, the number of brake assemblies is two, and the drive member simultaneously drives the drive pins of the two brake assemblies to move.

[0005] In one embodiment, the actuator is provided with a groove and the pusher is provided with a movable pin. The movable pin is movably inserted into the groove so that the pusher moves closer to or away from the wheel axis.

[0006] Specifically, the locking part is sleeved in the pusher, and when the moving pin moves in the inclined groove, the locking part moves closer to or away from the wheel axle along with the pusher.

[0007] Specifically, the locking member and the pushing member are movably connected, and a reset member is provided between the locking member and the pushing member.

[0008] In one embodiment, a pair of drive grooves are symmetrically provided on the drive member, and a drive shaft is provided on the outside of the drive pin perpendicular to its own central axis. The drive shaft is movably inserted into the drive groove so that the drive pin can be driven to move through the drive groove when the drive member rotates.

[0009] In one embodiment, an elastic element is also included, which is disposed between the two drive pins.

[0010] In one embodiment, the linkage includes a first linkage and a second linkage. One end of the first linkage is connected to a drive pin, and the other end of the first linkage is rotatably connected to one end of the second linkage. The other end of the second linkage is connected to an actuator.

[0011] Specifically, the first linkage is provided with a connector, the second linkage is provided with a pivot joint, and a receiving portion is provided between the first linkage and the second linkage. The connector is disposed in the receiving portion, and the pivot joint is rotatably disposed in the receiving portion so that the first linkage and the second linkage can be connected.

[0012] Specifically, the actuator is provided with a receiving protrusion, and the second linkage is provided with a pivot joint, which is disposed in the receiving protrusion to connect the actuator and the second linkage joint.

[0013] Specifically, the pivot joint is a spherical head.

[0014] In one embodiment, the braking mechanism further includes a rear foot tube, which is disposed on the frame of the wheeled vehicle, the wheel is sleeved on the rear foot tube, and the receiving part is movably disposed inside the rear foot tube.

[0015] Specifically, the braking mechanism further includes a first sleeve and a second sleeve. The first sleeve is fixed inside the rear foot tube, and the second sleeve is built inside the rear foot tube and rotatably connected to the first sleeve. The first sleeve and the second sleeve form an internal space through which the first linkage and the second linkage can pass, and the receiving part is located in the internal space.

[0016] In one embodiment, the braking mechanism further includes an elastic reset member that provides an elastic force to reset the push member.

[0017] In one embodiment, the wheel hub is provided with engagement holes distributed around the rolling shaft of the wheel, the openings of the engagement holes facing outwards, and the locking member can enter the engagement holes to lock the wheel or exit the engagement holes to release the wheel.

[0018] In one embodiment, the drive member is a sleeve-shaped structure and is rotatably sleeved on the cross tube of the frame of the wheeled vehicle, and the drive member extends out to provide a pedal for stepping.

[0019] A locking assembly is provided between the drive unit and the frame to lock or unlock the drive unit.

[0020] Specifically, the locking assembly includes a locking pin disposed on the drive member and two locking recesses disposed on the frame. When the drive member rotates to the position of locking the wheel, the locking pin engages with one of the locking recesses to position the drive member; when the drive member rotates to the position of releasing the wheel, the locking pin engages with the other locking recess to position the drive member.

[0021] Specifically, the locking pin is movably disposed on the drive member, and the locking assembly also includes a compression spring disposed between the locking pin and the drive member to drive the locking pin to extend.

[0022] Specifically, a guide groove is provided on one side of the drive member. The guide groove is located between the two locking recesses. When the drive member rotates and releases the wheel, the locking pin slides along the guide groove to the other locking recess. When the drive member rotates and locks the wheel, the locking pin slides along the guide groove to one of the locking recesses.

[0023] A wheeled vehicle includes a frame and a pair of omnidirectionally rotatable front wheels, and also includes a pair of rear wheels and a braking mechanism. The braking mechanism is mounted on the frame and can lock both rear wheels simultaneously to prevent the rear wheels from rolling.

[0024] In one embodiment, the wheeled vehicle further includes an orientation mechanism, with the rear wheel pivotally connected to a wheel seat, the wheel seat being omnidirectionally rotatable on the frame, the orientation mechanism simultaneously limiting the two wheel seats to prevent the rear wheel from omnidirectionally rotating, or simultaneously releasing the limiting to allow the wheel seat to omnidirectionally rotate.

[0025] Specifically, the orientation mechanism includes an operating part, a third linkage, a positioning pin, and a return spring. The operating part is connected to one end of the third linkage, and the other end of the third linkage is connected to the positioning pin. The return spring provides an elastic force to reset the positioning pin. The positioning pin can be inserted into the wheel seat to position the rear wheel or removed from the wheel seat to release the rear wheel.

[0026] Specifically, the operating part is movably mounted on the frame of the wheeled vehicle, and the operating part is symmetrically provided with two inclined slides. The end of the third linkage is provided with a moving head, which is movably mounted on the frame and movably inserted into the inclined slide.

[0027] In one embodiment, the present invention has two operating parts, which can respectively drive the two side linkages to drive the actuator to move, thereby causing the actuator to drive the locking member to move, so as to lock or release the corresponding rear wheel.

[0028] Specifically, a bearing is provided between the frame and the wheel seat.

[0029] Specifically, the frame has a rear leg tube, the wheel seat has a pivot sleeve that is pivotally connected to the rear leg tube, and the bearing is disposed between the pivot sleeve and the rear leg tube.

[0030] Specifically, the wall surface of the pivot sleeve that contacts the outer wall of the bearing has a toothed structure in the circumferential direction.

[0031] Another aspect of the present invention provides a braking mechanism for locking the wheels of a wheeled vehicle, wherein the braking mechanism includes a driving member and a braking assembly, the braking assembly includes a driving pin, a linkage, an actuator, a pushing member, and a locking member, the driving pin is connected to one end of the linkage, the other end of the linkage is connected to the actuator, the actuator is movably disposed within the wheel seat of the wheeled vehicle; the pushing member is movably disposed within the actuator, the pushing member is connected to the locking member, the driving member drives the driving pin of the braking assembly to move, so as to drive the actuator to move through the linkage, the actuator drives the pushing member to move, and the pushing member drives the locking member to move, so as to lock or unlock the wheel.

[0032] According to one embodiment, the number of brake assemblies is two, and the drive member simultaneously drives the drive pins of the two brake assemblies to move.

[0033] According to one embodiment, the actuator is provided with an inclined groove, and the pusher is provided with a movable pin. The movable pin is movably inserted into the inclined groove so that the pusher moves closer to or away from the axis of the wheel.

[0034] According to one embodiment, the locking member is partially sleeved in the pushing member, and when the actuator drives the pushing member to move, the locking member moves closer to or further away from the axle of the wheel along with the pushing member.

[0035] According to one embodiment, the locking member is movably connected to the pushing member, and a reset member is provided between the locking member and the pushing member. The locking member has a T-shaped structure and has a vertical axis and a horizontal axis. The vertical axis is movably sleeved with the pushing member, and the horizontal axis extends out of the pushing member. One end of the reset member abuts against the end of the vertical axis, and the other end abuts against the inner bottom of the pushing member.

[0036] According to one embodiment, the driving member is provided with a pair of symmetrical driving grooves, and the driving pin is provided with a driving shaft on its outer side perpendicular to its own central axis. The driving shaft is movably inserted into the driving groove so as to drive the driving pin to move through the driving groove when the driving member rotates.

[0037] According to one embodiment, the linkage includes a first linkage and a second linkage. One end of the first linkage is connected to the drive pin, and the other end of the first linkage is rotatably connected to one end of the second linkage. The other end of the second linkage is connected to the actuator. The first linkage is provided with a connector, and the second linkage is provided with a pivot joint at its connection to the first linkage. A receiving portion is provided between the first linkage and the second linkage. The connector is disposed in the receiving portion, and the pivot joint is rotatably disposed in the receiving portion so that the first linkage and the second linkage are connected.

[0038] According to one embodiment, when the locking member and the pushing member move closer to the axle of the wheel, the locking member retracts into the pushing member, and the reset member is squeezed; when the locking member and the pushing member move away from the axle of the wheel, the reset member extends under its own elastic force, causing the locking member to extend.

[0039] According to one embodiment, the braking mechanism further includes a rear foot tube, which is disposed on the frame of the wheeled vehicle. The wheel seat is rotatably sleeved on the rear foot tube, and the receiving portion is disposed inside the rear foot tube. The braking mechanism further includes a first sleeve and a second sleeve. The first sleeve is fixed inside the rear foot tube, and the second sleeve is built inside the rear foot tube and rotatably connected to the first sleeve. The first sleeve and the second sleeve form an internal space through which the first linkage and the second linkage can pass, and the receiving portion is located within the internal space.

[0040] According to one embodiment, the wheel hub is provided with engagement holes distributed around the rolling shaft of the wheel, the openings of the engagement holes facing outwards, and the locking member can enter the engagement holes from the openings to lock the wheel or exit the engagement holes to release the wheel.

[0041] According to one embodiment, the drive member has a sleeve-like structure and is rotatably sleeved on the cross tube of the frame of the wheeled vehicle. The drive member extends out a pedal for stepping. A locking assembly is provided between the drive member and the frame to lock or unlock the drive member. The locking assembly includes a locking pin disposed on the drive member and two locking recesses disposed on the frame. When the drive member is rotated to the position of locking the wheel, the locking pin engages with one of the locking recesses to position the drive member. When the drive member is rotated to the position of unlocking the wheel, the locking pin engages with the other locking recess to position the drive member.

[0042] According to one embodiment, the driving member is further provided with a guide groove on one side. The guide groove is disposed between the two locking recesses. When the driving member rotates and releases the wheel, the locking pin slides along the guide groove toward the other locking recess. When the driving member rotates and locks the wheel, the locking pin slides along the guide groove toward one of the locking recesses.

[0043] According to one embodiment, the braking mechanism is used on a wheeled vehicle having a wheel seat, and the movement direction of the actuator within the wheel seat is perpendicular to the movement direction of the pusher.

[0044] In another embodiment of the present invention, a wheeled vehicle is provided, including a frame and a pair of omnidirectionally rotatable front wheels, and the wheeled vehicle also includes a pair of rear wheels and the above-mentioned braking mechanism. The braking mechanism is disposed on the frame and can lock both rear wheels simultaneously to prevent the rear wheels from rolling.

[0045] According to one embodiment, the wheeled vehicle further includes a directional mechanism, the directional mechanism including an operating part, a third linkage, a positioning pin and a return spring, the operating part being connected to one end of the third linkage, the other end of the third linkage being connected to the positioning pin, the return spring providing an elastic force to reset the positioning pin, the positioning pin being able to be inserted into the wheel seat and position the rear wheel or removed from the wheel seat and release the rear wheel.

[0046] Furthermore, another embodiment of the present invention provides a wheeled vehicle, including: a frame; a wheel connected to the frame; and a braking mechanism, the braking mechanism including: a drive member rotatably connected to the frame; a brake assembly connected to the drive member; and a locking assembly disposed between the drive member and the frame, the locking assembly including a locking pin disposed on the drive member, a guide groove, and two locking recesses disposed on the frame, the locking pin being movably disposed on the drive member, the guide groove being disposed between the two locking recesses, wherein when the drive member rotates and drives the brake assembly to lock the wheel, the locking pin slides along the guide groove toward one of the locking recesses to position the drive member; when the drive member rotates and drives the wheel to release, the locking pin slides along the guide groove toward the other locking recess to position the drive member.

Implementation Method

[0065] To explain in detail the technical content, structural features and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0066] As shown in Figures 1 and 2, the wheeled vehicle 100 of the present invention includes a frame 1, a pair of omnidirectionally rotatable front wheels 2, a pair of rear wheels 3, a braking mechanism 4, and a directional mechanism 5. The rear wheels 3 are pivotally connected to wheel seats 31 in a rolling manner. The wheel seats 31 are omnidirectionally rotatable on the frame 1, allowing the wheel seats 31 to freely rotate in different directions relative to the frame 1. The rolling axis of the rear wheels 3 is perpendicular to the rotation center axis of the wheel seats 31. The braking mechanism 4 is mounted on the frame 1 and can simultaneously lock both rear wheels 3 to prevent them from rolling, or simultaneously release them to allow them to roll. The directional mechanism 5 is mounted on the frame 1 and can simultaneously limit the movement of both rear wheels 3 to prevent them from omnidirectionally rotating around the rotation center axis of the wheel seats 31, or simultaneously release them to allow them to omnidirectionally rotate around the rotation center axis of the wheel seats 31. Specifically, as follows:

[0067] Referring to Figures 1 and 2, and Figures 3 to 8, the braking mechanism 4 includes a drive member 41 and a braking assembly. In this embodiment, since there are two rear wheels 3, the number of braking assemblies is two. The two braking assemblies are symmetrically arranged and both are driven by the same drive member 41, and each braking assembly controls one rear wheel 3. Each braking assembly includes a drive pin 42, a linkage, a locking member 43, an elastic member 44, a pushing member 45, an elastic reset member 46, and an actuator 412. The braking mechanism 4 can simultaneously lock or release the two rear wheels 3. Specifically, wheel seats 11 are provided on both sides of the rear end of the frame 1, and a cross tube 12 is provided between the two wheel seats 11. The drive member 41 has a sleeve-like structure and can be rotatably sleeved on the cross tube 12 around the central axis of the cross tube 12. The drive member 41 extends out as a pedal 411 for stepping. The drive pin 42 is axially movable within the cross tube 12 along the central axis of the cross tube 12. The drive member 41 can simultaneously drive both drive pins 42 to move. An elastic member 44 is disposed between the two drive pins 42, providing a resilient force to reset the drive pins 42, allowing them to repeat their actions. Since the two brake assemblies are symmetrically arranged, their locking or unlocking structures for the two rear wheels 3 are identical on both sides; therefore, only one side of the brake assembly will be described below. One end of the drive pin 42 is connected to a linkage member located within the transverse tube 12, and the other end is connected to an actuator 412, which is movably disposed within the wheel seat 31 of the wheeled vehicle. A pusher 45 is movably disposed within the actuator 412, and the direction of movement of the actuator 412 within the wheel seat 31 is perpendicular to the direction of movement of the pusher 45. The pusher 45 is connected to the locking member 43. The drive member 41 can simultaneously drive the drive pins 42 of both brake assemblies to move, thereby driving the actuator 412 to move via the linkage, which in turn drives the locking member 43 to move, thereby locking or unlocking the rear wheel 3 located on the same side. The actuator 412 is provided with a groove 412a, and the pusher 45 is provided with a moving pin 45a. The moving pin 45a is movably inserted into the groove 412a, so that the pusher 45 moves closer to the rear wheel 3. The locking member 43 is movably connected to the pusher 45. A reset member 413 is provided between the locking member 43 and the pusher 45. Specifically, the locking member 43 has a T-shaped structure, wherein the vertical shaft is movably sleeved with the pushing member 45, the horizontal shaft of the locking member 43 extends out of the pushing member 45, one end of the reset member 413 abuts against the end of the vertical shaft, and the other end abuts against the inner bottom of the pushing member 45. The reset member 413 is a compression spring.More specifically, the pusher 45 has an accommodating space extending through one end of the pusher 45. The reset member 413 is housed within this accommodating space. When the locking member 43, along with the pusher 45, approaches the axle of the rear wheel 3, the locking member 43 retracts into the pusher 45, compressing the reset member 413. Conversely, when the locking member 43, along with the pusher 45, moves away from the axle of the rear wheel 3, the reset member 413 extends under its own elastic force, causing the locking member 43 to extend. The elastic reset member 46 provides an elastic force to reset the locking member 43, allowing it to automatically disengage from the rear wheel 3. The elastic reset member 46 is disposed within the wheel seat 31, with one end abutting against the pusher 45 and the other end abutting against the inner wall of the wheel seat 31; the elastic reset member 46 is a compression spring. When the jacking member 45 is driven by the driving force and moves closer to the axle of the rear wheel 3, the elastic reset member 46 will be squeezed; conversely, when the driving force of the jacking member 45 disappears, the elastic reset member 46 will move the jacking member 45 and the locking member 43 away from the rear wheel 3 under its own elastic force.

[0068] Referring again to Figures 9 and 10, more specifically, a pair of driving grooves 41a are symmetrically provided on the wall of the driving member 41, and the distance between the same end of the two driving grooves 41a is smaller than the distance between the other ends. The driving pin 42 is provided with a driving shaft 42a, and the central axis of the driving shaft 42a is perpendicular to the moving direction of the driving pin 42. An elongated hole 12a extending along the central axis of the horizontal tube 12 is provided on the horizontal tube 12. The driving shaft 42a is movably inserted into the elongated hole 12a and simultaneously inserted into the driving groove 41a, so that when the driving member 41 rotates, it drives the driving pin 42 to move through the driving groove 41a. By providing the driving groove 41a, the driving groove 41a can convert the torque of the rotation of the driving member 41 into an axial tension on the driving pin 42, thereby causing the driving pin 42 to stretch the linkage, and then stretch the locking member 43 through the linkage, so as to achieve the purpose of driving the locking member 43 to move.

[0069] As shown in Figures 6 and 7, the braking mechanism 4 also includes a rear foot tube 47, which is fixedly mounted on the wheel seat 11 of the frame 1 and extends downward from the wheel seat 11. The wheel seat 31 is rotatably sleeved on the rear foot tube 47. The linkage includes a first linkage 48 and a second linkage 49, both of which are steel wires. One end of the first linkage 48 is connected to the drive pin 42, and the other end of the first linkage 48 extends into the rear foot tube 47 and is rotatably connected to one end of the second linkage 49. The other end of the second linkage 49 is connected to the actuator 412. More specifically, the first linkage 48 is located at one end of the rear leg tube 47, and a connector 48b is provided at one end of the first linkage 48. The connector 48b is integrally connected to the first linkage 48. A pivot connector 49a is provided at one end of the second linkage 49, and the pivot connector 49a is integrally connected to the second linkage 49. The pivot connector 49a is a spherical head. A receiving portion 48a is provided between the first linkage 48 and the second linkage 49. The receiving portion 48a has a hollow structure, and both its upper and lower ends have openings that extend through the inside and outside. The connector 48b passes through the opening at the upper end of the receiving portion 48a and is engaged within the receiving portion 48a. The pivot connector 49a passes through the opening at the lower end of the receiving portion 48a and is rotatably engaged within the receiving portion 48a, so that the first linkage 48 and the second linkage 49 are connected. The receiving portion 48a is suspended within the rear leg tube 47. Specifically, the pivot joint 49a is rotatably disposed within the receiving portion 48a, and the spherical surface of the pivot joint 49a makes point contact with the bottom surface of the receiving portion 48a, reducing the contact friction area and making the pivot joint 49a rotate more smoothly. The traction line of the second linkage member 49 is led outward through the opening at the lower end of the receiving portion 48a. Through the cooperation between the receiving portion 48a and the pivot joint 49a, since the pivot joint 49a can rotate freely within the receiving portion 48a, the connection between the first linkage member 48 and the second linkage member 49 can prevent the first linkage member 48 from twisting due to the rotation of the wheel seat 31, thus avoiding affecting the operation of the drive pin 42 and the drive member 41. The braking mechanism 4 also includes a first sleeve 414 and a second sleeve 415. The first sleeve 414 is fixed inside the rear foot tube 47, and the second sleeve 415 is built into the rear foot tube 47 and rotatably connected to the first sleeve 414. The first sleeve 414 and the second sleeve 415 form an internal space through which the first linkage 48 and the second linkage 49 can pass, and the receiving part 48a is located in the internal space. By setting the first sleeve 414 and the second sleeve 415, and allowing the second sleeve 415 to rotate relative to the first sleeve 414, the receiving part 48a can be protected, and the problem of interference caused by the rotation of the wheel seat 31 can be solved. This further reduces the probability of the second linkage 49 torsion due to the rotation of the wheel seat 31, thereby improving the stability of the wheel during omnidirectional rotation.When the wheel seat 31 rotates, the receiving part 48a, the connector 48b and the first sleeve 414 will not rotate, while the pivot joint 49a and the second sleeve 415 will rotate with the wheel seat 31.

[0070] As shown in Figures 7 and 16, a bearing is provided between the frame 1 and the wheel seat 31. Specifically, the bearing 33 is located between the rear leg tube 47 and the wheel seat 31. By providing the bearing 33, the rotation between the rear leg tube 47 and the wheel seat 31 can be made more stable and smooth, ensuring that the wheel seat 31 can rotate in all directions. Specifically, the wheel seat 31 has a pivot sleeve 31a that is pivotally connected to the rear leg tube 47. The bearing 33 is located inside the pivot sleeve 31a, and the wall surface of the pivot sleeve 31a that contacts the outer wall of the bearing 33 has a circumferential toothed structure 311. By adding the toothed structure 311, the deformation of the pivot sleeve 31a can be increased, thereby preventing the pivot sleeve 31a from breaking and extending its service life.

[0071] Furthermore, referring to Figure 6 more specifically, the actuator 412 has an outwardly protruding receiving protrusion 412b, and the other end of the second linkage 49 has a pivot joint 49b, which is a spherical head. The pivot joint 49b is rotatably disposed within the receiving protrusion 412b and makes spherical contact with the receiving protrusion 412b, connecting the actuator 412 and the second linkage 49. One end of the elastic reset member 46 abuts against the end of the push member 45, and the other end abuts against the wheel seat 31. By engaging the receiving protrusion 412b with the pivot joint 49b, since the pivot joint 49b can rotate freely within the receiving protrusion 412b, the second linkage 49 can be prevented from twisting due to the rotation of the wheel after being connected to the actuator 412.

[0072] As shown in Figures 11 and 12, a locking assembly 410 is provided between the drive member 41 and the frame 1 to lock or unlock the drive member 41. Specifically, the locking assembly 410 includes a locking pin 410b movably disposed on the drive member 41, two locking recesses 410a disposed on the cross tube of the frame, and a compression spring 410c. The compression spring 410c is disposed between the locking pin 410b and the drive member 41 to drive the locking pin 410b to extend. When the drive member 41 rotates to the position of locking the rear wheel, the locking pin 410b engages with one of the locking recesses 410a to position the drive member 41; when the drive member 41 rotates to the position of unlocking the rear wheel, the locking pin 410b engages with the other locking recess 410a to position the drive member 41. In this way, by setting the locking pin 410b to cooperate with the locking recess 410a, the drive member 41 can keep the wheel locked without the user having to maintain force on the drive member 41, improving the convenience of use; while when releasing, it can ensure the stability of the drive member 41 and prevent the wheel from accidentally locking due to accidental rotation of the drive member 41. The drive member 41 is also provided with a guide groove 410d on one side, which is located between the two locking recesses 410a. When the drive member 41 rotates and releases the rear wheel, the locking pin 410b can slide along the guide groove 410d to the other locking recess 410a. When the drive member 41 rotates and locks the rear wheel, the locking pin 410b slides along the guide groove 410d to one of the locking recesses 410a, thereby guiding the drive member 41 when it rotates.

[0073] Referring again to Figures 13 to 15, the hub of the rear wheel 3 is provided with engagement holes 32 circumferentially distributed around the rolling shaft of the rear wheel 3. The opening of the engagement holes 32 faces outward. The transverse shaft of the locking member 43 can enter the engagement holes 32 to lock the rear wheel 3 or exit the engagement holes 32 to release the rear wheel 3.

[0074] Referring again to Figures 17 and 18, the orientation mechanism 5 includes an operating part 51, a third linkage 52, a positioning pin 53, and a return spring 54. The third linkage 52 is a steel wire; the operating part 51 is disposed on the handle of the wheeled vehicle 100 and connected to one end of the third linkage 52. The positioning pin 53 is located near the rear wheel 3 and is movably disposed on the frame 1. The other end of the third linkage 52 extends to the vicinity of the rear wheel 3 and is connected to the positioning pin 53. The return spring 54 provides an elastic force to reset the positioning pin 53. The return spring 54 is disposed between the positioning pin 53 and the wheel seat 11. The positioning pin 53 can be inserted into the positioning hole of the wheel seat 31 and position the rear wheel 3 (i.e., the rear wheel 3 is in a locked state), or it can be removed from the wheel seat 31 and release the rear wheel 3 (i.e., the rear wheel 3 is in a released state, at which time the four wheels can rotate in all directions to achieve the drifting function). The operating part 51 is movably mounted on the pusher of the frame 1 of the wheeled vehicle 100, and the operating part 51 is symmetrically provided with two inclined slide grooves 51a. The two inclined slide grooves 51a are symmetrically arranged, and the distance between the ends on the same side of the two is smaller than the distance between the ends on the other side of the two. The end of the third linkage member 52 is provided with a moving head 52a, which is movably mounted on the frame 1. The moving direction is perpendicular to the moving direction of the operating part 51, and the moving heads 52a of the two third linkage members 52 are movably inserted into the inclined slide grooves 51a. Therefore, when the user presses the operating part 51, the inclined slide grooves 51a can drive the two moving heads 52a to move closer or further apart, thereby subjecting the two third linkage members 52 connected to their respective moving heads 52a to a pulling force, thereby driving the positioning pin 53.

[0075] In one embodiment of the present invention, there are two operating parts, which can drive the two side linkages to drive the actuator 412 to move, thereby causing the actuator 412 to drive the locking member 43 to move, so as to lock or release the corresponding rear wheel.

[0076] In summary, and in conjunction with the above-mentioned figures, when it is necessary to brake the wheeled vehicle, the pedal is pressed, causing the drive member 41 to rotate on the horizontal tube 12. The drive groove 41a of the drive member 41 drives the drive shaft 42a from one end of the drive groove 41a to the other end, causing the drive pin 42 to move. Then, the drive pin 42 drives the first linkage 48, the first linkage 48 drives the second linkage 49, the second linkage 49 drives the actuator 412 to move, and the actuator 412 drives the push member 45 through the groove 412a and the moving pin 45a. The push member 45 drives the locking member 43, and the locking member 43 can then enter the engagement hole 32 of the rear wheel 3, thereby engaging and locking the rear wheel 3. At this time, the rear wheel 3 cannot roll, the wheeled vehicle 100 is in a braking state, and cannot move. When unlocking is required, the pedal needs to be lifted, causing the pedal to drive the drive component 41. The drive component 41 can be reset under the action of the elastic component 44, thereby releasing the first linkage component 48 and the second linkage component 49. Under the action of the elastic reset component 46, the actuator 412 and the pusher 45 are reset. At this time, the locking component 43 exits the engagement hole 32, thereby releasing the rear wheel 3, and the wheeled vehicle 100 can then drive.

[0077] When the wheeled vehicle 100 needs to be set to a drifting state, while keeping the brake mechanism 4 unlocked, the operating part 51 is operated, causing the operating part 51 to move the third linkage 52. The third linkage 52 causes the positioning pin 53 to disengage from the positioning hole of the wheel seat 31, thereby allowing the rear wheel 3 to rotate around the rear foot tube 47. When the wheel seat 31 rotates, it causes the second sleeve 415 to rotate relative to the first sleeve 414, and the pivot joint 49a of the second linkage 49 can rotate within the receiving part 48a. At this time, both the front wheel 2 and the rear wheel 3 of the wheeled vehicle 100 can rotate, and the wheeled vehicle 100 can perform drifting actions such as lateral movement. When the operating part 51 is released, the positioning pin 53 is inserted into the positioning hole of the wheel seat 31 under the action of the reset elasticity, thereby relocking the rear wheel 3. At this time, the rear wheel 3 of the wheeled vehicle 100 can only roll and cannot rotate, and the wheeled vehicle 100 is in a non-drifting state.

[0078] In one embodiment of the present invention, a driving member 41 drives two driving pins 42 to move, so that the two driving pins 42 drive the linkages respectively. Utilizing the flexible extension characteristic of the linkages, the two linkages can extend to the rear wheel 3 and pull the actuator 412. The actuator 412 then drives the pusher 45 and locking member 43 located near the rear wheel 3, so that the two locking members 43 can lock the rear wheel 3 located on the same side. Therefore, the user only needs to step on one driving member 41 to simultaneously lock both rear wheels 3, achieving a double-brake function with one step. The structure is simple and the operation is convenient. Furthermore, by allowing the wheel seat 31 to rotate omnidirectionally relative to the frame 1, the wheeled vehicle 100 can move laterally, thus possessing drifting capability. Simultaneously, by using the directional mechanism 5 to lock or unlock the wheel seat 31, this drifting or non-drifting function can be switched at any time, greatly improving the convenience and flexibility of use.

[0079] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention shall still fall within the scope of the present invention. [Simplified Explanation of the Diagram]

[0047] Figure 1 shows a front perspective view of the wheeled vehicle of the present invention.

[0048] Figure 2 shows a rear perspective view of the wheeled vehicle of the present invention.

[0049] Figure 3 shows a perspective view of the rear wheel and braking mechanism of the wheeled vehicle of the present invention.

[0050] Figure 4 shows a structural diagram of the rear wheel and the internal structure of the braking mechanism of the wheeled vehicle of the present invention.

[0051] Figure 5 shows a cross-sectional view of the rear wheel and the interior of the braking mechanism of the wheeled vehicle of the present invention.

[0052] Figure 6 shows a side sectional view of the rear wheel, braking mechanism and orientation mechanism of the wheeled vehicle of the present invention.

[0053] Figure 7 shows the internal structure of the rear foot tube of the wheeled vehicle of the present invention.

[0054] Figure 8 shows a structural diagram of the actuator, pusher and locking member of the wheeled vehicle of the present invention.

[0055] Figure 9 shows a structural diagram of the rear wheel and brake mechanism of the wheeled vehicle of the present invention without the drive component.

[0056] Figure 10 shows a structural diagram of the upper half of the drive component of the braking mechanism of the wheeled vehicle of the present invention.

[0057] Figure 11 illustrates the state of the locking assembly of the wheeled vehicle of the present invention after the pedal is pressed.

[0058] Figure 12 illustrates the state of the locking assembly of the wheeled vehicle of the present invention after the pedal is raised.

[0059] Figure 13 shows the state of the brake mechanism of the wheeled vehicle of the present invention when the rear wheel is released.

[0060] Figure 14 illustrates the state diagram of the brake mechanism of the wheeled vehicle of the present invention when the rear wheel is locked.

[0061] Figure 15 shows a perspective view of the brake mechanism of the wheeled vehicle of the present invention when the rear wheel is released.

[0062] Figure 16 shows a structural diagram of the bearing inside the wheel seat of the wheeled vehicle of the present invention.

[0063] Figure 17 shows a side sectional view of the wheeled vehicle of the present invention when the orientation mechanism locks the rear wheel.

[0064] Figure 18 shows the internal structure of the operating part of the orienting mechanism of the wheeled vehicle of the present invention.

Claims

1. A braking mechanism for locking the wheels of a wheeled vehicle, wherein, The braking mechanism includes a driving component and a braking assembly. The braking assembly includes a driving pin, a linkage, an actuator, a pushing component, and a locking component. The driving pin is connected to one end of the linkage, and the other end of the linkage is connected to the actuator. The actuator is movably disposed within the wheel seat of the wheeled vehicle. The pushing component is movably disposed within the actuator and is connected to the locking component. The driving component drives the driving pin of the braking assembly to move, thereby driving the actuator to move via the linkage. The actuator drives the pushing component to move, and the pushing component drives the locking component to move. The system allows for locking or unlocking of the wheels. A locking assembly is provided between the drive member and the frame of the wheeled vehicle to lock or unlock the drive member. The locking assembly includes a locking pin on the drive member and two locking recesses on the frame. A guide groove is also provided on one side of the drive member, positioned between the two locking recesses. When the drive member rotates to the position where the wheels are locked, the locking pin engages with one of the locking recesses to position the drive member. When the drive member rotates to the position where the wheels are unlocked, the locking pin engages with the other locking recess to position the drive member. When the drive member rotates and releases the wheel, the locking pin slides along the guide groove toward the other locking recess; when the drive member rotates and locks the wheel, the locking pin slides along the guide groove toward one of the locking recesses.

2. The braking mechanism as described in claim 1, wherein: The number of brake assemblies is two, and the drive member simultaneously drives the drive pins of both brake assemblies to move.

3. The braking mechanism as described in claim 1, wherein: The actuator is provided with an inclined groove, and the pusher is provided with a movable pin. The movable pin is movably inserted into the inclined groove so that the pusher moves closer to or away from the axle of the wheel.

4. The braking mechanism as described in claim 1, wherein: The locking member is partially sleeved within the pushing member. Correspondingly, when the actuator drives the pushing member to move, the locking member moves closer to or further away from the axle of the wheel along with the pushing member.

5. The braking mechanism as described in claim 4, wherein: The locking member is movably connected to the pushing member, and a reset member is provided between the locking member and the pushing member. The locking member has a T-shaped structure and has a vertical axis and a horizontal axis. The vertical axis is movably sleeved with the pushing member, and the horizontal axis extends out of the pushing member. One end of the reset member abuts against the end of the vertical axis, and the other end abuts against the inner bottom of the pushing member.

6. The braking mechanism as described in claim 1, wherein: The driving component is provided with a pair of symmetrical driving grooves. The driving pin is provided with a driving shaft on its outer side perpendicular to its own central axis. The driving shaft is movably inserted into the driving groove so that the driving pin can be driven to move through the driving groove when the driving component rotates.

7. The braking mechanism as described in claim 1, wherein: The linkage includes a first linkage and a second linkage. One end of the first linkage is connected to the drive pin, and the other end of the first linkage is rotatably connected to one end of the second linkage. The other end of the second linkage is connected to the actuator. The first linkage has a connector, and the second linkage has a pivot joint where it connects to the first linkage. A receiving portion is provided between the first linkage and the second linkage. The connector is disposed in the receiving portion, and the pivot joint is rotatably disposed in the receiving portion so that the first linkage and the second linkage can be connected.

8. The braking mechanism as described in claim 5, wherein: When the locking member and the pushing member move closer to the axle of the wheel, the locking member retracts into the pushing member, and the reset member is squeezed; when the locking member and the pushing member move away from the axle of the wheel, the reset member extends under its own elastic force, causing the locking member to extend.

9. The braking mechanism as described in claim 7, wherein: The braking mechanism further includes a rear foot tube, which is disposed on the frame of the wheeled vehicle. The wheel seat is rotatably sleeved on the rear foot tube, and the receiving portion is disposed inside the rear foot tube. The braking mechanism further includes a first sleeve and a second sleeve. The first sleeve is fixed inside the rear foot tube, and the second sleeve is built inside the rear foot tube and rotatably connected to the first sleeve. The first sleeve and the second sleeve form an internal space that allows the first linkage and the second linkage to pass through, and the receiving portion is located within the internal space.

10. The braking mechanism as claimed in claim 1, wherein: The wheel hub is provided with engagement holes distributed around the wheel's rolling axis. The openings of the engagement holes face outwards. The locking member can enter the engagement holes through the openings to lock the wheel or exit the engagement holes to release the wheel.

11. The braking mechanism as claimed in claim 1, wherein: The drive unit has a sleeve-like structure and is rotatably fitted onto the cross tube of the frame of the wheeled vehicle, and the drive unit extends out to form a pedal for stepping.

12. The braking mechanism as claimed in claim 1, wherein: The braking mechanism is used on a wheeled vehicle having a wheel seat, and the direction of movement of the actuator within the wheel seat is perpendicular to the direction of movement of the pushing member.

13. A wheeled vehicle comprising a frame and a pair of omnidirectionally rotatable front wheels, and the wheeled vehicle further comprising a pair of rear wheels and a braking mechanism as described in any one of claims 1 to 12, the braking mechanism being disposed on the frame and capable of simultaneously locking both rear wheels to prevent the rear wheels from rolling.

14. The wheeled vehicle as described in claim 13, wherein: The wheeled vehicle also includes an orientation mechanism, which includes an operating part, a third linkage, a positioning pin, and a return spring. The operating part is connected to one end of the third linkage, and the other end of the third linkage is connected to the positioning pin. The return spring provides an elastic force to reset the positioning pin. The positioning pin can be inserted into the wheel seat to position the rear wheel or removed from the wheel seat to release the rear wheel.

15. A wheeled vehicle, comprising: Frame; Wheels, connected to the vehicle frame; The system includes a braking mechanism comprising: a drive member rotatably connected to the frame; a brake assembly connected to the drive member; and a locking assembly disposed between the drive member and the frame. The locking assembly includes a locking pin and a guide groove disposed on the drive member, and two locking recesses disposed on the frame. The locking pin is movably disposed on the drive member, and the guide groove is disposed between the two locking recesses. When the drive member rotates and drives the brake assembly to lock the wheel, the locking pin slides along the guide groove to one of the locking recesses to position the drive member. When the drive member rotates and drives the wheel to unlock, the locking pin slides along the guide groove to the other locking recess to position the drive member.

Images