Bicycle handlebar direction-changing locking structure

Abstract

The present invention relates to the technical field of bicycles, and more specifically, to a bicycle handlebar change-of-direction locking structure, comprising a support mechanism, wherein wheels are rotatably mounted at both ends of the bottom of the support mechanism, and a plastic wheel is symmetrically fixedly mounted on the wheel at the front end of the support mechanism, the support mechanism comprising a positioning component and a limiting component, the positioning component being rotatably mounted inside the front end of the limiting component, the positioning component comprising an alignment device and a steering device, the alignment device being symmetrically fixedly mounted at the bottom end of the steering device, the alignment device comprising a positioning shaft, a guide rod, a matching clamping plate, a first spring, a support cavity, and a first extension rod, the positioning shaft on the left side being fixedly mounted at the top left end of the first extension rod, the guide rod on the left side being fixedly mounted on the left side of the first extension rod, and the support cavity being fixedly mounted at the bottom side end of the matching clamping plate near the guide rod. By setting up the support mechanism, the purpose of changing-of-direction wheel locking and precise alignment lubrication of the bicycle is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of bicycles, in particular to a direction-changing locking structure for bicycle handlebars. Background Art

[0002] A bicycle, also known as a cycle or bicycle, is typically a small, two-wheeled land vehicle. It's powered by pedaling and is an environmentally friendly means of transportation. There are many different types of bicycles, including single-person bicycles, tandem bicycles, and multi-person bicycles.

[0003] Currently, when bicycles are parked, the wheels of the bicycles need to be restricted by external locks, making it impossible to lock the wheels in a directional manner. At the same time, the existing bicycle locking devices can only limit the rotation inside the wheels, making it impossible to lock the wheels in a directional manner and perform precise alignment and lubrication on existing bicycles. Therefore, a device is needed to improve the above problems. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a bicycle handlebar direction-changing locking structure.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a bicycle handlebar change-direction locking structure, including a support mechanism, wheels are rotatably mounted at both ends of the bottom of the support mechanism, and plastic wheels are symmetrically fixedly mounted on the wheels at the front end of the support mechanism, the support mechanism includes a positioning component and a limiting component, the positioning component is rotatably mounted inside the front end of the limiting component, the positioning component includes a positioning device and a steering device, the positioning device is symmetrically fixedly mounted on the bottom end of the steering device, the positioning device includes a positioning shaft, a guide rod, a matching card, a first spring, a support cavity and a first extension rod, the positioning shaft located on the left is fixedly mounted on the first extension rod At the top of the left side, the guide rod on the left side is fixedly installed on the left side of the first extension rod, the support cavity is fixedly installed on the bottom of the side end of the mating card close to the guide rod, the mating card is slidably inserted into the inside of the support cavity, and the first spring is fixedly installed between the mating card and the support cavity. The steering device includes a positioning sleeve, a shaft, a first gear, a handle, a cam and a support vertical frame. The positioning sleeve is fixedly installed on the top of the shaft, the handle is fixedly installed on the front end top of the shaft, the shaft is fixedly installed on the top center of the support vertical frame, the first gear is rotatably installed on both sides of the shaft, and the cam is fixedly installed on the bottom end of the first gear away from the shaft.

[0006] Specifically, the limiting component includes a matching device, a synchronizing device, a guide device, a covering cover and a bicycle frame. The matching device is fixedly mounted on the front end of the bicycle frame, the guide device is fixedly mounted on the top front end of the bicycle frame, the synchronizing device is fixedly mounted on both sides of the guide device, the covering cover is rotatably hinged at the top front end of the bicycle frame, and the covering cover is located above the synchronizing device.

[0007] Specifically, the cooperating device includes a front end sleeve, a winding wheel, a second spring, an L-shaped extension rod, a second extension rod, an alignment plate, a limiting block, a gear ring, a support chassis, a second gear and a connecting steel cable, the front end sleeve is fixedly installed on the top center of the support chassis, the limiting block is symmetrically fixedly installed on the rear end of the front end sleeve, the second gear is symmetrically fixedly installed on the top of the support chassis, and the second gear is located on both sides of the front end sleeve, the winding wheel is fixedly installed on the top of the second gear, the connecting steel cable is fixedly connected between the winding wheel and the alignment plate, the alignment plate is fixedly installed on the end of the second spring away from the front end sleeve, the second spring is symmetrically fixedly installed on both sides of the support chassis, the L-shaped extension rod is fixedly installed on the rear end of the alignment plate, the second extension rod is fixedly installed on the bottom end of the alignment plate, and the gear ring is fixedly installed on the bottom end of the support chassis.

[0008] Specifically, the synchronization device includes a third spring, a guide tube, an oil accumulation cavity, a cover plate, a U-shaped synchronization rod, a buzzer alarm, a battery compartment, a conductive sheet, a support pad, a pad and an alignment cavity. The support pad is fixedly installed at the bottom end of the buzzer alarm, the battery compartment is fixedly installed on the inner right side of the support pad, the conductive sheet is fixedly installed at the end of the buzzer alarm opposite to the battery compartment, the cover plate is fixedly installed at both ends of the bottom of the support pad, the oil accumulation cavity is fixedly installed at the bottom end of the cover plate, the U-shaped synchronization rod is slidably inserted inside the top end of the oil accumulation cavity, the pad is fixedly installed on the outer ring of the U-shaped synchronization rod, and the third spring is fixedly connected between the cover plate and the pad, the guide tube is fixedly installed at the bottom center of the oil accumulation cavity, and the alignment cavity is fixedly installed at the front end bottom of the guide tube.

[0009] Specifically, the guide device includes a guide slide, a threaded rod, a special-shaped extension frame, a rack, an iron sheet and a supporting top plate. The iron sheet is fixedly installed at the front end center of the guide slide, the guide slide slides through the top end of the supporting top plate and is rotatably installed on the outer ring of the threaded rod, the special-shaped extension frame is fixedly installed on both sides of the guide slide, the rack is fixedly installed on the front end of the special-shaped extension frame, and the threaded rod is threadedly inserted into the rear end center of the supporting top plate.

[0010] Specifically, the wheels are rotatably mounted on the bottom of both ends of the bicycle frame, the support cavity is fixedly mounted on the bottom end of the support vertical frame, the guide rod is slidably inserted on the outer surface of the support vertical frame, the shaft rod is rotatably mounted on the inner center of the front end sleeve, the alignment cavity is fixedly mounted on the inner ring of the front end sleeve, the oil accumulation cavity is fixedly mounted on both sides of the support top plate, and the support top plate is fixedly mounted on the top front end of the bicycle frame.

[0011] Specifically, the mating card is vertically aligned with the plastic wheel, a sliding groove adapted to the first extension rod is opened inside the bottom end of the support cavity, the first gear is engaged with the gear ring, circular holes are symmetrically opened on the outer ring of the shaft rod and the positioning sleeve, and locking holes are opened at the rear end center of the positioning sleeve and the front end center of the covering sleeve, the front end surface of the alignment plate is tilted at 45°, the second gear is located above the L-shaped extension rod, the second gear is horizontally aligned with the rack, the two conductive plates are 2 cm apart, the inner ring of the alignment cavity is equal to the inner ring of the front end sleeve, and the guide slide is fixed with a convex plate away from the top front end of the threaded rod, and the top two sides of the convex plate are tilted at 45°.

[0012] Specifically, the interior of the oil accumulation cavity is set in a hollow state, and the guide tube, the oil accumulation cavity and the alignment cavity are interconnected. A release groove is provided in the center of the inner ring of the alignment cavity, and a socket adapted to the positioning shaft is provided inside the bottom end of the second extension rod. A plastic layer is fixedly installed on the inner ring surface of the mating card near the first extension rod. The L-shaped extension rod is slidably inserted into the interior of the limiting block, and the bottom end of the U-shaped synchronization rod is aligned with the front end top of the guide slide. A limiting round rod is fixedly installed on the front end of the threaded rod.

[0013] Specifically, the covering sleeve also includes a connecting rope, which is symmetrically fixedly installed at the inner bottom end of the covering sleeve. The oil accumulation cavity also includes a fourth spring, an anti-slip plate and a filling head. The filling head is fixedly installed on the front and rear ends of the anti-slip plate. The filling head is slidably inserted into the inner rear end of the oil accumulation cavity, and the fourth spring is symmetrically fixedly installed between the oil accumulation cavity and the anti-slip plate.

[0014] Specifically, a filling port is provided on the rear end of the oil accumulation cavity, the size of the anti-slip plate is larger than the size of the filling port, the end of the connecting rope away from the covering sleeve is connected to the rear end of the filling head, and a guide plate is fixedly installed at the inner bottom end of the filling head, and the top end of the guide plate is inclined at 45°.

[0015] Beneficial effects of the present invention:

[0016] First, the present invention allows the threaded rod inside the guide device to be inserted into the interior of the shaft when it is screwed and rotated, and the shaft can be precisely docked with the threaded rod when turning, so that the threaded rod can limit the shaft to a specified angle. Moreover, when the shaft rotates, it can indirectly drive the first extension rod and the matching clamping plate to move toward the rear end through the first gear and the cam, so that the matching clamping plate can contact and cooperate with the plastic wheel, thereby limiting and fixing the wheel and completing the work of changing direction locking of the wheel.

[0017] Secondly, when the guide slide inside the guide device of the present invention moves toward the front end, it can drive the bottom end of the U-shaped synchronization rod to be dislocated from the top end of the guide tube, so that the oil inside the oil accumulation cavity can accurately flow from the guide tube to the inside of the alignment cavity, and the alignment cavity fits with the outer ring surface of the shaft rod, so that the shaft rod can be accurately covered and lubricated, thereby improving the accuracy of the shaft rod during steering and completing the work of precise alignment lubrication of the shaft rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the support mechanism of the present invention from a rear perspective;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning component in the present invention from a rear perspective;

[0022] Figure 4 It is a partial cutaway schematic diagram of the alignment device in the present invention;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the steering device of the present invention from a rear perspective;

[0024] Figure 6 A partial cutaway schematic diagram of the limiting component of the present invention;

[0025] Figure 7 It is a partial cross-sectional schematic diagram of the matching device in the present invention;

[0026] Figure 8 It is a partial cutaway schematic diagram of the synchronization device in the present invention;

[0027] Figure 9 This is a schematic diagram of the three-dimensional structure of the guide device of the present invention from a rear perspective;

[0028] Figure 10 This is a schematic diagram of the three-dimensional structure of the second embodiment of the cover sleeve of the present invention from a rear perspective;

[0029] Figure 11 It is a partial cross-sectional schematic diagram of the second embodiment of the oil accumulation cavity in the present invention.

[0030] In the figure: 1-support mechanism, 2-wheel, 3-plastic wheel, 4-positioning component, 5-limiting component, 6-alignment device, 7-steering device, 8-positioning shaft, 9-guide rod, 10-matching card plate, 11-first spring, 12-support cavity, 13-first extension rod, 14-positioning sleeve, 15-shaft, 16-first gear, 17-handle, 18-cam, 19-support vertical frame, 20-matching device, 21-synchronizing device, 22-guide device, 23-covering sleeve, 24-bicycle frame, 25-front end sleeve, 26-winding wheel, 27-second spring, 28-L-shaped extension rod, 2 9-second extension rod, 30-alignment plate, 31-limiting block, 32-gear ring, 33-support chassis, 34-second gear, 35-connecting steel cable, 36-third spring, 37-guide pipe, 38-oil accumulation cavity, 39-cover plate, 40-U-shaped synchronization rod, 41-buzzer alarm, 42-battery compartment, 43-conductive sheet, 44-support pad, 45-pad, 46-alignment cavity, 47-guide slide, 48-threaded rod, 49-special-shaped extension frame, 50-rack, 51-iron sheet, 52-support top plate, 53-connecting rope, 54-fourth spring, 55-anti-slip sheet, 56-filling head. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] The present invention will be further described below with reference to the accompanying drawings. Example

[0034] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, a bicycle handlebar change-direction locking structure of the present invention includes a support mechanism 1, wheels 2 are rotatably mounted at both ends of the bottom of the support mechanism 1, and a plastic wheel 3 is symmetrically fixedly mounted on the wheel 2 at the front end of the support mechanism 1, the support mechanism 1 includes a positioning component 4 and a limiting component 5, the positioning component 4 is rotatably mounted inside the front end of the limiting component 5, the positioning component 4 includes a positioning device 6 and a steering device 7, the positioning device 6 is symmetrically fixedly mounted on the bottom end of the steering device 7, the positioning device 6 includes a positioning shaft rod 8, a guide rod 9, a matching card plate 10, a first spring 11, a support cavity 12 and a first extension rod 13, the positioning shaft rod 8 on the left side is fixedly mounted on the left top end of the first extension rod 13, and the guide rod 9 on the left side is fixed It is installed on the left side of the first extension rod 13, the support cavity 12 is fixedly installed on the bottom of the side end of the mating card 10 near the guide rod 9, the mating card 10 is slidably inserted into the inside of the support cavity 12, and the first spring 11 is fixedly installed between the mating card 10 and the support cavity 12. The steering device 7 includes a positioning sleeve 14, a shaft 15, a first gear 16, a handle 17, a cam 18 and a support vertical frame 19. The positioning sleeve 14 is fixedly installed on the top of the shaft 15, the handle 17 is fixedly installed on the front end top of the shaft 15, the shaft 15 is fixedly installed on the top center of the support vertical frame 19, the first gear 16 is rotatably installed on both sides of the shaft 15, and the cam 18 is fixedly installed on the bottom end of the first gear 16 away from the shaft 15.

[0035] like Figure 6 The limiting component 5 includes a matching device 20, a synchronizing device 21, a guide device 22, a covering sleeve 23 and a bicycle frame 24. The matching device 20 is fixedly mounted on the front end of the bicycle frame 24, the guide device 22 is fixedly mounted on the top front end of the bicycle frame 24, the synchronizing device 21 is fixedly mounted on both sides of the guide device 22, and the covering sleeve 23 is rotatably hinged at the top front end of the bicycle frame 24, and the covering sleeve 23 is located above the synchronizing device 21. When the covering sleeve 23 is flipped to the front end to a horizontal position, the locking hole at the front end of the covering sleeve 23 can be driven to align with the locking hole at the rear end center of the positioning sleeve 14, so that an external lock can be easily installed between the positioning sleeve 14 and the covering sleeve 23.

[0036] like Figure 7The matching device 20 includes a front end sleeve 25, a winding wheel 26, a second spring 27, an L-shaped extension rod 28, a second extension rod 29, an alignment plate 30, a limiting block 31, a gear ring 32, a support chassis 33, a second gear 34 and a connecting cable 35. The front end sleeve 25 is fixedly mounted on the top center of the support chassis 33, the limiting block 31 is symmetrically fixedly mounted on the rear end of the front end sleeve 25, the second gear 34 is symmetrically fixedly mounted on the top of the support chassis 33, and the second gear 34 is located on both sides of the front end sleeve 25, the winding wheel 26 is fixedly mounted on the top of the second gear 34, and the connecting cable 35 is fixedly connected between the winding wheel 26 and the alignment plate 3 0, the alignment plate 30 is fixedly mounted on the end of the second spring 27 away from the front end sleeve 25, the second spring 27 is symmetrically fixedly mounted on both sides of the support chassis 33, the L-shaped extension rod 28 is fixedly mounted on the rear end of the alignment plate 30, the second extension rod 29 is fixedly mounted on the bottom end of the alignment plate 30, and the ring gear 32 is fixedly mounted on the bottom end of the support chassis 33. When the second spring 27 maintains a normal state, the alignment plate 30 and the second extension rod 29 can be squeezed to be misaligned with the cam 18 and the positioning shaft 8 respectively, so as to prevent the shaft 15 from driving the cam 18 and the positioning shaft 8 to contact the alignment plate 30 and the second extension rod 29 when turning.

[0037] like Figure 8 The synchronization device 21 includes a third spring 36, a guide tube 37, an oil accumulation cavity 38, a cover plate 39, a U-shaped synchronization rod 40, a buzzer alarm 41, a battery compartment 42, a conductive sheet 43, a support pad 44, a pad 45 and an alignment cavity 46. The support pad 44 is fixedly mounted on the bottom end of the buzzer alarm 41, the battery compartment 42 is fixedly mounted on the right side of the support pad 44, the conductive sheet 43 is fixedly mounted on the end of the buzzer alarm 41 opposite to the battery compartment 42, and the cover plate 39 is fixedly mounted on both ends of the bottom of the support pad 44. The oil accumulation chamber 38 is fixedly mounted on the bottom end of the cover plate 39, the U-shaped synchronization rod 40 is slidably inserted into the top end of the oil accumulation chamber 38, the gasket 45 is fixedly mounted on the outer ring of the U-shaped synchronization rod 40, and the third spring 36 is fixedly connected between the cover plate 39 and the gasket 45, the guide tube 37 is fixedly mounted on the bottom end center of the oil accumulation chamber 38, and the alignment cavity 46 is fixedly mounted on the front end bottom of the guide tube 37. When the threaded rod 48 moves toward the rear end, it can drive the iron sheet 51 to disengage from the conductive sheet 43, so that the buzzer alarm 41 can be powered off.

[0038] like Figure 9The guide device 22 includes a guide slide 47, a threaded rod 48, a special-shaped extension frame 49, a rack 50, an iron sheet 51 and a support top plate 52. The iron sheet 51 is fixedly mounted on the front end center of the guide slide 47. The guide slide 47 slides through the top end of the support top plate 52 and is rotatably mounted on the outer ring of the threaded rod 48. The special-shaped extension frame 49 is fixedly mounted on both sides of the guide slide 47. The rack 50 is fixedly mounted on the front end of the special-shaped extension frame 49. The threaded rod 48 is threadedly inserted into the rear end center of the support top plate 52. A threaded hole is opened through the inner center of the support top plate 52, so that the threaded rod 48 can be allowed to rotate and move inside the support top plate 52.

[0039] The wheels 2 are rotatably mounted on the bottom of both ends of the bicycle frame 24, the support cavity 12 is fixedly mounted on the bottom end of the support vertical frame 19, the guide rod 9 is slidably inserted on the outer surface of the support vertical frame 19, the shaft 15 is rotatably mounted on the inner center of the front end sleeve 25, the alignment cavity 46 is fixedly mounted on the inner ring of the front end sleeve 25, the oil accumulation cavity 38 is fixedly mounted on both sides of the support top plate 52, and the support top plate 52 is fixedly mounted on the top front end of the bicycle frame 24, which can support the threaded rod 48 to move successively.

[0040] The matching card plate 10 is vertically aligned with the plastic wheel 3. A sliding groove adapted to the first extension rod 13 is provided inside the bottom end of the support cavity 12. The first gear 16 is engaged with the gear ring 32. Circular holes are symmetrically provided on the outer rings of the shaft 15 and the positioning sleeve 14. A locking hole is provided at the rear end center of the positioning sleeve 14 and the front end center of the covering sleeve 23. The front end surface of the alignment plate 30 is inclined at 45 degrees. The second gear 34 is located above the L-shaped extension rod 28. The second gear 34 is in engagement with the gear ring 32. It is horizontally aligned with the rack 50, the two conductive sheets 43 are 2 cm apart, the inner circle of the alignment cavity 46 is equal to the inner circle of the front end sleeve 25, and the guide slide 47 is fixedly installed with a convex plate at the front end away from the top of the threaded rod 48, and the top two sides of the convex plate are inclined at 45°. When the guide slide 47 drives the convex plate to reciprocate through the bottom end of the U-shaped synchronization rod 40, the grease inside the oil accumulation cavity 38 can be added to the outer ring surface of the shaft 15 through the guide tube 37 and the alignment cavity 46.

[0041] The interior of the oil accumulation cavity 38 is hollow, and the guide tube 37, the oil accumulation cavity 38 and the alignment cavity 46 are interconnected. A release groove is provided at the center of the inner ring of the alignment cavity 46. A socket adapted to the positioning shaft 8 is provided inside the bottom end of the second extension rod 29. A plastic layer is fixedly installed on the inner ring surface of the matching card 10 close to the first extension rod 13. The L-shaped extension rod 28 is slidably inserted into the interior of the limiting block 31. The bottom end of the U-shaped synchronization rod 40 is aligned with the front end top of the guide slide 47. A limiting round rod is fixedly installed at the front end of the threaded rod 48. By limiting the diameter of the round rod to be equal to the circular holes on both sides of the shaft 15, the shaft 15 can be prevented from sliding again.

[0042] The working principle of Example 1 is as follows: when the device needs to be parked, the threaded rod 48 can be screwed and rotated so that the threaded rod 48 can pass through the support top plate 52 and move toward the front end. When the threaded rod 48 is screwed and rotated, the rack 50 can be driven to pass through the second gear 34. The rack 50 and the L-shaped extension rod 28 are misaligned up and down, so that the rack 50 and the L-shaped extension rod 28 can be prevented from interfering. At the same time, when the rack 50 passes through the second gear 34, it can drive the winding wheel 26 to rotate, and when the winding wheel 26 rotates, the connecting steel cable 35 can be pulled to drive the alignment plate 30 to move toward the inside of the front end sleeve 25. The L-shaped extension rod 28 is slidably inserted into the inside of the limiting block 31, so that the alignment plate 30 and the second extension rod 29 can be supported to move in a straight line. When the center position of the rack 50 moves When the shaft 15 is moved to align with the second gear 34, the second extension rod 29 can be driven to contact the positioning shaft 8. After that, the shaft 15 can be rotated at an angle so that the circular hole on the shaft 15 is vertically aligned with the front end of the threaded rod 48. At the same time, when the shaft 15 is rotating, the first gear 16 can be driven to rotate at the bottom end of the supporting chassis 33. The first gear 16 is engaged with the gear ring 32 through the first gear 16, so that the first gear 16 itself can rotate. When the shaft 15 drives the circular hole to align vertically with the threaded rod 48, the first gear 16 and the cam 18 can be driven to contact the alignment plate 30. When the center position of the rack 50 is moved to align with the second gear 34, the front end of the alignment plate 30 can be driven to align with the rear end surface of the first gear 16, so that the first gear 16 drives the cam 18 to the rear end. When rotating, the alignment plate 30 can be squeezed to move toward the rear end. The front end surface of the alignment plate 30 is tilted at 45 degrees, so that the contact smoothness between the cam 18 and the alignment plate 30 can be improved. When the alignment plate 30 moves toward the rear end, the first extension rod 13 can be driven to move toward the rear end by the second extension rod 29. The matching card plate 10 is located in front of the plastic wheel 3, so that the matching card plate 10 can be close to the plastic wheel 3. Afterwards, when the threaded rod 48 is continuously screwed and rotated toward the front end, the rack 50 can be driven to continue to move on the surface of the second gear 34, thereby driving the second extension rod 29 to continue to move on the positioning shaft 8 until the threaded rod 48 moves toward the front end to the limit position, driving the second extension rod 29 to fit with the first extension rod 13. At the same time, it can also drive the first extension rod 13 moves to the rear end until it is tightly fitted with the plastic wheel 3, completing the work of limiting and fixing the wheel 2 and preventing the wheel 2 from rotating again. Afterwards, when the threaded rod 48 moves to the front end to the extreme position, it can also be inserted into the round hole on the side end of the shaft rod 15, thereby preventing the shaft rod 15 from rotating again, completing the work of double locking of the shaft rod 15 and the wheel 2. In the process of the threaded rod 48 moving to the front end, the protrusion at the front end of the top of the guide slide 47 can be driven to pass through the bottom end of the U-shaped synchronization rod 40, so that the U-shaped synchronization rod 40 can be squeezed to move upward, causing the bottom end of the U-shaped synchronization rod 40 to move out from the top inside of the guide tube 37, so that the oil inside the oil accumulation cavity 38 can flow through the guide tube 37 to the inside of the positioning cavity 46, and through the positioning cavity 46 located on the inner ring of the front end sleeve 25,The release groove on the inner surface of the alignment cavity 46 fits with the outer surface of the shaft 15, so that the oil can flow to the surface of the shaft 15, thereby improving the smoothness of the shaft 15 when it rotates again. At the same time, when the protrusion on the top of the guide slide 47 passes through the U-shaped synchronization rod 40, the elasticity of the third spring 36 will squeeze the pad 45 to drive the U-shaped synchronization rod 40 to move downward quickly and be inserted into the top inner part of the guide tube 37, so that the guide tube 37 can be closed to prevent excessive oil from flowing into the surface of the shaft 15, and when the threaded rod 48 moves to the front end When the iron sheet 51 is in the extreme position, it can also drive the iron sheet 51 to contact the conductive sheet 43, and connect the buzzer alarm 41 and the battery compartment 42 respectively through the conductive sheet 43. A battery is installed inside the battery compartment 42, so that when the iron sheet 51 contacts the conductive sheet 43, the battery compartment 42 and the buzzer alarm 41 can be connected, so that the power supply inside the battery compartment 42 is connected to the buzzer alarm 41, causing the buzzer alarm 41 to sound an alarm when it senses a large vibration or shaking from the outside world. After that, the covering sleeve 23 can be rotated and flipped toward the front end until the locking hole at the front end of the covering sleeve 23 is aligned with the positioning sleeve After the locking hole at the rear end center of 14 is aligned, the external lock is installed into the locking hole between the covering sleeve 23 and the positioning sleeve 14 to complete the work. When the device needs to be ridden normally, the threaded rod 48 can be screwed and rotated toward the rear end, causing the threaded rod 48 to move out of the circular hole on the shaft rod 15, so that the shaft rod 15 can turn again, and when the threaded rod 48 moves toward the rear end, it can respectively drive the rack 50 to pass through the second gear 34, drive the second gear 34 to rotate in the opposite direction, and release the connecting cable 35. At this time, the elasticity of the second spring 27 will drive the alignment plate 30 to The end away from the front sleeve 25 moves, allowing the second extension rod 29 to be removed from the positioning shaft rod 8, and can drive the alignment plate 30 to be misaligned with the cam 18, preventing the cam 18 from contacting the alignment plate 30 again during normal use of the shaft rod 15, facilitating normal riding of the device and completing its work. When the positioning shaft rod 8 is disengaged from the second extension rod 29, the elasticity of the first spring 11 will drive the matching clamping plate 10 and the first extension rod 13 to move quickly toward the front end, so that the matching clamping plate 10 can be disengaged from the plastic wheel 3, facilitating normal rotation of the wheel 2. Example

[0043] On the basis of Example 1, Figure 10 and Figure 11As shown, the covering sleeve 23 also includes a connecting rope 53, which is symmetrically fixedly installed at the inner bottom end of the covering sleeve 23. The oil accumulation cavity 38 also includes a fourth spring 54, an anti-slip sheet 55 and a filling head 56. The filling head 56 is fixedly installed on the front and rear ends of the anti-slip sheet 55. The filling head 56 is slidably inserted into the inner rear end of the oil accumulation cavity 38, and the fourth spring 54 is symmetrically fixedly installed between the oil accumulation cavity 38 and the anti-slip sheet 55. A filling port is provided on the rear end of the oil accumulation cavity 38. The size of the anti-slip sheet 55 is larger than the size of the filling port. The end of the connecting rope 53 away from the covering sleeve 23 is connected to the rear end of the filling head 56. A guide plate is fixedly installed at the inner bottom end of the filling head 56, and the top of the guide plate is inclined at 45°.

[0044] When the cover 23 is reversed and opened to the limit position, the connecting rope 53 can be driven to pull the filling head 56 to the rear end to the limit position, so that the filling head 56 can move from the interior of the oil accumulation cavity 38 to the rear end to the limit position, and the anti-slip piece 55 on the front end surface of the filling head 56 contacts the rear end of the oil accumulation cavity 38, so as to prevent the filling head 56 from falling off from the interior of the oil accumulation cavity 38. Afterwards, the user can choose to add oil according to the amount of oil in the oil accumulation cavity 38. Afterwards, when the cover 23 is flipped over to cover the oil accumulation cavity 38 again, the connecting rope 53 can be released. At this time, the elasticity of the fourth spring 54 will drive the filling head 56 to move to the front end until the anti-slip piece 55 at the rear end of the filling head 56 fits with the rear end surface of the oil accumulation cavity 38, so that the filling head 56 can move to the interior of the oil accumulation cavity 38, preventing external dust from entering the interior of the oil accumulation cavity 38, and completing the work.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A bicycle handlebar locking structure, comprising a support mechanism (1), wherein wheels (2) are rotatably mounted at both ends of the bottom of the support mechanism (1), and a plastic wheel (3) is symmetrically fixedly mounted on the wheel (2) at the front end of the support mechanism (1), characterized in that: The support mechanism (1) includes a positioning component (4) and a limiting component (5), wherein the positioning component (4) is rotatably mounted inside the front end of the limiting component (5), and the positioning component (4) includes a positioning device (6) and a steering device (7), wherein the positioning device (6) is symmetrically fixedly mounted at the bottom end of the steering device (7), and the positioning device (6) includes a positioning shaft (8), a guide rod (9), a matching card (10), a first spring (11), a support cavity (12) and a first extension rod (13), wherein the positioning shaft (8) located on the left side is fixedly mounted on the left top end of the first extension rod (13), and the guide rod (9) located on the left side is fixedly mounted on the left side of the first extension rod (13), and the support cavity (12) is fixedly mounted on the matching card (10) near the guide rod. (9) is at the bottom of the side end, the matching card plate (10) is slidably inserted into the interior of the support cavity (12), the first spring (11) is fixedly installed between the matching card plate (10) and the support cavity (12), the steering device (7) includes a positioning sleeve (14), a shaft (15), a first gear (16), a handle (17), a cam (18) and a support vertical frame (19), the positioning sleeve (14) is fixedly installed on the top of the shaft (15), the handle (17) is fixedly installed on the front top of the shaft (15), the shaft (15) is fixedly installed at the top center of the support vertical frame (19), the first gear (16) is rotatably installed on both sides of the shaft (15), and the cam (18) is fixedly installed on the bottom end of the first gear (16) away from the shaft (15).

2. The bicycle handlebar locking structure according to claim 1, characterized in that: The limiting component (5) comprises a matching device (20), a synchronizing device (21), a guiding device (22), a covering sleeve (23) and a bicycle frame (24); the matching device (20) is fixedly mounted on the front end of the bicycle frame (24); the guiding device (22) is fixedly mounted on the top front end of the bicycle frame (24); the synchronizing device (21) is fixedly mounted on both sides of the guiding device (22); the covering sleeve (23) is rotatably hinged on the top front end of the bicycle frame (24), and the covering sleeve (23) is located above the synchronizing device (21).

3. The bicycle handlebar changing and locking structure according to claim 2, characterized in that: The matching device (20) comprises a front end sleeve (25), a winding wheel (26), a second spring (27), an L-shaped extension rod (28), a second extension rod (29), an alignment plate (30), a limiting block (31), a gear ring (32), a supporting chassis (33), a second gear (34) and a connecting steel cable (35), wherein the front end sleeve (25) is fixedly mounted at the top center of the supporting chassis (33), the limiting block (31) is symmetrically fixedly mounted at the rear end of the front end sleeve (25), the second gear (34) is symmetrically fixedly mounted at the top of the supporting chassis (33), and the second gear (34) is located at the front end sleeve (25). On both sides of the support chassis (33), the winding wheel (26) is fixedly mounted on the top end of the second gear (34), the connecting steel cable (35) is fixedly connected between the winding wheel (26) and the alignment plate (30), the alignment plate (30) is fixedly mounted on the end of the second spring (27) away from the front end sleeve (25), the second spring (27) is symmetrically fixedly mounted on both sides of the support chassis (33), the L-shaped extension rod (28) is fixedly mounted on the rear end of the alignment plate (30), the second extension rod (29) is fixedly mounted on the bottom end of the alignment plate (30), and the gear ring (32) is fixedly mounted on the bottom end of the support chassis (33).

4. The bicycle handlebar changing and locking structure according to claim 3, characterized in that: The synchronization device (21) comprises a third spring (36), a flow guide tube (37), an oil accumulation cavity (38), a cover plate (39), a U-shaped synchronization rod (40), a buzzer alarm (41), a battery compartment (42), a conductive sheet (43), a support pad (44), a pad (45) and an alignment cavity (46), wherein the support pad (44) is fixedly mounted on the bottom end of the buzzer alarm (41), the battery compartment (42) is fixedly mounted on the right side of the inner side of the support pad (44), and the conductive sheet (43) is fixedly mounted on the end of the buzzer alarm (41) opposite to the battery compartment (42). The cover plate (39) is fixedly mounted on both ends of the bottom of the support pad (44), the oil accumulation cavity (38) is fixedly mounted on the bottom end of the cover plate (39), the U-shaped synchronization rod (40) is slidably inserted into the top end of the oil accumulation cavity (38), the pad (45) is fixedly mounted on the outer ring of the U-shaped synchronization rod (40), and the third spring (36) is fixedly connected between the cover plate (39) and the pad (45), the guide tube (37) is fixedly mounted at the bottom center of the oil accumulation cavity (38), and the alignment cavity (46) is fixedly mounted at the front end bottom of the guide tube (37).

5. The bicycle handlebar changing and locking structure according to claim 4, characterized in that: The guide device (22) comprises a guide slide (47), a threaded rod (48), a special-shaped extension frame (49), a rack (50), an iron sheet (51) and a support top plate (52), wherein the iron sheet (51) is fixedly mounted at the front end center of the guide slide (47), the guide slide (47) slides through the top end of the support top plate (52) and is rotatably mounted on the outer ring of the threaded rod (48), the special-shaped extension frame (49) is fixedly mounted on both sides of the guide slide (47), the rack (50) is fixedly mounted on the front end of the special-shaped extension frame (49), and the threaded rod (48) is threadedly plugged into the rear end center of the support top plate (52).

6. The bicycle handlebar changing and locking structure according to claim 5, characterized in that: The wheels (2) are rotatably mounted on the bottom ends of the bicycle frame (24); the support cavity (12) is fixedly mounted on the bottom end of the support vertical frame (19); the guide rod (9) is slidably inserted on the outer surface of the support vertical frame (19); the shaft (15) is rotatably mounted on the inner center of the front end sleeve (25); the alignment cavity (46) is fixedly mounted on the inner ring of the front end sleeve (25); the oil accumulation cavity (38) is fixedly mounted on both sides of the support top plate (52); and the support top plate (52) is fixedly mounted on the top front end of the bicycle frame (24).

7. The bicycle handlebar changing and locking structure according to claim 6, characterized in that: The matching card plate (10) is vertically aligned with the plastic wheel (3), a sliding groove adapted to the first extension rod (13) is provided inside the bottom end of the supporting cavity (12), the first gear (16) is meshed with the gear ring (32), the outer rings of the shaft rod (15) and the positioning sleeve (14) are symmetrically provided with circular holes, and the rear end center of the positioning sleeve (14) and the front end center of the covering sleeve (23) are provided with locking holes, the front end surface of the alignment plate (30) is inclined at 45 degrees, the second gear (34) is located above the L-shaped extension rod (28), the second gear (34) is horizontally aligned with the rack (50), the two conductive sheets (43) are spaced 2 cm apart, the inner ring of the alignment cavity (46) is equal to the inner ring of the front end sleeve (25), the guide slide plate (47) is fixedly installed with a convex plate away from the top front end of the threaded rod (48), and the top two sides of the convex plate are inclined at 45 degrees.

8. The bicycle handlebar changing and locking structure according to claim 7, characterized in that: The interior of the oil accumulation cavity (38) is hollow, and the guide tube (37), the oil accumulation cavity (38) and the alignment cavity (46) are interconnected. A release groove is provided at the center of the inner ring of the alignment cavity (46). A socket adapted to the positioning shaft (8) is provided inside the bottom end of the second extension rod (29). A plastic layer is fixedly installed on the inner ring surface of the matching card plate (10) close to the first extension rod (13). The L-shaped extension rod (28) is slidably inserted into the interior of the limiting block (31). The bottom end of the U-shaped synchronization rod (40) is aligned with the top front end of the guide slide (47). A limiting round rod is fixedly installed on the front end of the threaded rod (48).

9. The bicycle handlebar changing and locking structure according to claim 8, characterized in that: The covering sleeve (23) further comprises a connecting rope (53), and the connecting rope (53) is symmetrically fixedly mounted on the inner bottom end of the covering sleeve (23). The oil accumulation cavity (38) further comprises a fourth spring (54), an anti-slip sheet (55) and a filling head (56), and the filling head (56) is fixedly mounted on the front and rear ends of the anti-slip sheet (55). The filling head (56) is slidably inserted into the inner rear end of the oil accumulation cavity (38), and the fourth spring (54) is symmetrically fixedly mounted between the oil accumulation cavity (38) and the anti-slip sheet (55).

10. The bicycle handlebar changing and locking structure according to claim 9, characterized in that: A filling port is provided on the rear end of the oil accumulation cavity (38); the size of the anti-dropping piece (55) is larger than that of the filling port; the end of the connecting rope (53) away from the covering sleeve (23) is connected to the rear end of the filling head (56); a guide plate is fixedly installed on the inner bottom end of the filling head (56), and the top end of the guide plate is inclined at 45 degrees.

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