CN116968854A - Portable skateboard bicycle - Google Patents

Portable skateboard bicycle Download PDF

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Publication number
CN116968854A
CN116968854A CN202210426693.5A CN202210426693A CN116968854A CN 116968854 A CN116968854 A CN 116968854A CN 202210426693 A CN202210426693 A CN 202210426693A CN 116968854 A CN116968854 A CN 116968854A
Authority
CN
China
Prior art keywords
gear
transmission mechanism
chain
bicycle
gear box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210426693.5A
Other languages
Chinese (zh)
Inventor
黄丽燕
陈虎
李春玲
刘志鹏
徐英杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi Vocational Technical College of Industrial Engineering
Original Assignee
Jiangxi Vocational Technical College of Industrial Engineering
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangxi Vocational Technical College of Industrial Engineering filed Critical Jiangxi Vocational Technical College of Industrial Engineering
Priority to CN202210426693.5A priority Critical patent/CN116968854A/en
Publication of CN116968854A publication Critical patent/CN116968854A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B62K5/05—Tricycles characterised by a single rear wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K15/006—Collapsible or foldable cycles the frame being foldable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K21/00—Steering devices
    • B62K21/12—Handlebars; Handlebar stems
    • B62K21/16—Handlebars; Handlebar stems having adjustable parts therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • B62M1/28—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by the use of flexible drive members, e.g. chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/02—Transmissions characterised by use of an endless chain, belt, or the like of unchangeable ratio

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

The invention discloses a portable scooter bicycle which comprises a bicycle body, a telescopic handlebar, a folding mechanism, a steering mechanism, a rear wheel, two front wheels, a primary chain transmission mechanism, a secondary gear transmission mechanism and a tertiary chain transmission mechanism, wherein the output end of the primary chain transmission mechanism is connected with the input end of the secondary gear transmission mechanism, the secondary gear transmission mechanism is arranged in a gear box, the output shaft of the secondary gear transmission mechanism passes through a through hole of the gear box and is coaxially arranged with the input end of the tertiary chain transmission mechanism, the output end of the tertiary chain transmission mechanism is connected with a rear wheel shaft of the rear wheel through a rear wheel shaft sleeve, and the tertiary chain transmission mechanism is positioned below a chain guard plate. The invention combines the structural characteristics of a scooter and a bicycle, and designs a portable scooter which integrates three-stage transmission, double driving of landing and pedal and automatic resetting of an extension spring, and has the advantages of high transmission efficiency, convenient operation and high reliability.

Description

Portable skateboard bicycle
Technical Field
The invention relates to the field of vehicles, in particular to a portable scooter bicycle.
Background
The low-carbon life and the green trip become life concepts of a plurality of people, and young people are bothered by the problem of the last kilometer in modern urban life, namely, vehicles are selected for short-distance trip such as school, work and the like. Electric bicycles are mostly adopted for urban short-distance travel vehicles at home and abroad, however, the electric bicycles cannot be folded by using an integral frame structure, and are not convenient enough in storage and carrying. Especially in the existing urban short-distance public travel vehicle leasing system, the problem that the bicycle is insufficient in electric quantity and inconvenient to borrow is usually encountered. While scooters originated in the western united states from 1950 to 1960, bicycles originated in europe at the end of the 18 th century, and have now evolved into the most demanding shared vehicles in the world. Therefore, the portable scooter integrated with the functions of riding instead of walk, body building and entertainment is becoming the first choice vehicle of the young family.
Disclosure of Invention
In order to solve the prior art, the invention provides a portable scooter bicycle, which combines the structural characteristics of a scooter and a bicycle, and designs the portable scooter bicycle integrating three-stage transmission, double-drive of landing and pedal and automatic reset of a tension spring.
The technical scheme adopted in the invention is as follows:
a portable scooter bicycle comprises a bicycle body, a telescopic handlebar, a folding mechanism, a steering mechanism, a rear wheel, two front wheels, a primary chain transmission mechanism, a secondary gear transmission mechanism and a tertiary chain transmission mechanism, wherein,
the automobile body comprises a gear box, a pedal, an automobile head, a front wheel carrier, an automobile tail frame, a chain guard board and a box cover board, wherein the automobile head and the gear box are integrally formed, the front part of the automobile head is fixedly connected with the center of the front wheel carrier, one side of the gear box is provided with a through hole for passing through an output shaft of a secondary gear transmission mechanism, the box cover board is connected with the top of the gear box through a screw, the pedal is installed above the gear box and is flush with the box cover board, the automobile tail frame is fixedly installed at the tail part of the gear box and used for supporting a rear wheel shaft, and the chain guard board is arranged on the outer side of the gear box;
the telescopic handle bar is arranged on the vehicle head through a folding mechanism, the two front wheels are symmetrically arranged at two ends of the front wheel frame respectively, and the rear wheels are arranged on the vehicle tail frame through rear wheel shafts;
the steering mechanism is arranged on the front wheel frame, the primary chain wheel transmission mechanism is arranged on the vehicle body, the output end of the primary chain wheel transmission mechanism is connected with the input end of the secondary gear transmission mechanism, the secondary gear transmission mechanism is arranged in the gear box, the output shaft of the secondary gear transmission mechanism penetrates through a through hole of the gear box and is coaxially arranged with the input end of the tertiary chain wheel transmission mechanism, the output end of the tertiary chain wheel transmission mechanism is connected with a rear wheel shaft of the rear wheel through a rear wheel shaft sleeve, and the tertiary chain wheel transmission mechanism is positioned below the chain guard plate.
Preferably, the telescopic handlebar comprises a handlebar rod, a telescopic sleeve rod and a telescopic sleeve, wherein the bottom end of the telescopic sleeve rod is connected with the bicycle head through the folding mechanism, the other end of the telescopic sleeve rod is screwed with the telescopic sleeve through threads, and the handlebar rod is connected with the telescopic sleeve rod through the telescopic sleeve.
Preferably, the folding mechanism comprises a folding sleeve, a mounting seat is arranged on the headstock, a hollow semi-cylinder is arranged on the mounting seat, a cylinder groove is arranged on the headstock below the hollow semi-cylinder, the folding sleeve is sleeved on a telescopic sleeve rod and is in threaded connection with the inner wall of the hollow semi-cylinder, two vertical rivet grooves are formed in two sides of the bottom end of the telescopic sleeve rod, the telescopic sleeve rod is riveted with the mounting seat through the rivet grooves in a limiting manner, the bottom end of the telescopic sleeve rod is spliced in the cylinder groove, and a pin hole is further formed in the mounting seat, and a telescopic handlebar is fixed through the cooperation of a bolt and the rivet grooves.
Preferably, the steering mechanism comprises two steering springs, the two steering springs are symmetrically arranged on two sides of the vehicle head, one end of each steering spring is connected with the vehicle head, and the other end of each steering spring is fixedly connected with the front wheel frame.
Preferably, the primary chain transmission mechanism comprises a pedal, a first chain, an extension spring and a flywheel I, wherein one end of the pedal is connected with the gear box through a bolt, one end of the first chain is connected with a chain hook hole on the pedal in a matched manner through a chain hook, the other end of the first chain is connected with one end of the extension spring after passing through the flywheel I, the other end of the extension spring is connected with a spring hanging point of the inner side wall of the gear box, and the flywheel I is arranged on an input shaft of a first gear in the secondary gear transmission mechanism in the gear box.
Preferably, the secondary gear transmission mechanism comprises a first gear and a second gear, the first gear and the second gear are installed in a meshed mode, the first gear and the second gear are installed in the gear box through bearings respectively, an input shaft of the first gear is installed coaxially with the flywheel I, and an output shaft of the second gear penetrates through a through hole of the gear box and is installed coaxially with a sprocket of the tertiary sprocket transmission mechanism.
Preferably, the three-stage sprocket transmission mechanism comprises a sprocket, a second chain and a flywheel II, wherein the sprocket is coaxially installed with an output shaft of the second gear and is positioned on one side of the gear box, the flywheel II is connected with a rear wheel shaft of the rear wheel through a rear wheel shaft sleeve, and the second chain is meshed and wound on the sprocket and the flywheel II.
Preferably, the first gear and the second gear are both standard spur gears.
Preferably, the brake assembly comprises a brake pad and a brake pad pressing plate, one end of the brake pad is pressed and fixed at the tail of the box cover plate through the brake pad pressing plate, and the brake pad is located right above the rear wheel.
The beneficial effects are that: the invention provides a portable scooter bicycle, which has the following advantages:
(1) The invention adopts the secondary gear transmission mechanism as a transmission transition link, relieves the impact caused by chain transmission, and ensures that the transmission is more stable, thereby maintaining accurate and stable transmission ratio.
(2) The folding mechanism is adopted to easily realize folding and storage of the telescopic handle bar, so that the whole space in idle time can be reduced, and the telescopic handle bar is convenient to move and carry.
(3) The primary chain transmission mechanism and the tertiary chain wheel transmission mechanism utilize the motion characteristics of the flywheel to realize intermittent power input, and the low-speed shaft cannot be reversed when the pedal is reset, so that the transmission effect is effectively ensured.
(4) The steering mechanism is adopted, the steering of the scooter bicycle is realized by adjusting the gravity center of the body of a user, and the scooter is simple in structure and convenient to operate.
(5) The invention has high transmission efficiency, and can provide power for the front pedal of the ground by a single foot or provide power for the pedal by the right foot.
Drawings
FIG. 1 is a block diagram showing the whole structure of embodiment 1
Fig. 2 is a schematic front view of embodiment 1;
FIG. 3 is a schematic view in section A-A of FIG. 2;
fig. 4 is a right-side view schematically showing the structure of embodiment 1;
FIG. 5 is a schematic view in section B-B of FIG. 4;
FIG. 6 is a schematic top view of embodiment 1;
fig. 7 is a schematic view of a vehicle body structure of embodiment 1;
fig. 8 is a cross-sectional view of a vehicle body structure of embodiment 1;
fig. 9 is a schematic structural view of a telescopic boom of embodiment 1;
FIG. 10 is a schematic view of the cooperating mounting structure of the transmission mechanisms of the respective stages of embodiment 1;
FIG. 11 is a simplified transmission diagram of the transmission mechanism of each stage of embodiment 1;
FIG. 12 is a transmission flow chart of example 1;
in the figure: the bicycle comprises a bicycle body 1, a gear box 1-1, a through hole 1-11, lugs 1-12, a bearing seat 1-13, spring hanging points 1-14, 5-1, a bicycle head 1-3, hanging lugs 1-35, a mounting seat 1-32, a hollow semi-cylinder 1-33, a cylinder groove 1-34, a pin hole 1-35, a front wheel frame 1-4, a bicycle tail frame 1-5, rib plates 1-51, a chain guard plate 1-6, a box cover plate 1-7, a telescopic handle 2, a bicycle handle rod 2-1, a telescopic sleeve rod 2-2, a rivet groove 2-21, a telescopic sleeve 2-3, a folding mechanism 3-1, a folding sleeve 3-1 and a rivet 3-2 the steering spring 4, the primary chain transmission mechanism 5, the pedal 5-1, the chain hook hole 5-11, the first chain 5-2, the tension spring 5-3, the flywheel I5-4, the secondary gear transmission mechanism 6, the first gear 6-1, the second gear 6-2, the bearing 6-3, the input shaft 6-4, the output shaft 6-5, the tertiary chain transmission mechanism 7, the chain wheel 7-1, the second chain 7-2, the flywheel II7-3, the rear wheel axle sleeve 7-4, the front wheel 8, the rear wheel 9, the rear wheel axle 9-1, the brake component 10, the brake pad 10-1 and the brake pressing plate 10-2.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. The following description of the embodiments is merely exemplary in nature and it is to be understood that the embodiments described herein are merely illustrative of the invention, and are in no way intended to limit the invention, its application, or uses.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In the description of the present invention, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1:
as shown in fig. 1 to 6, a portable scooter type bicycle comprises a body 1, a telescopic handle bar 2, a folding mechanism, a steering mechanism, a rear wheel 9, two front wheels 8, a primary chain transmission mechanism 5, a secondary gear transmission mechanism 6, a tertiary chain wheel transmission mechanism 7 and a brake assembly 10, wherein,
as shown in fig. 7-8, the vehicle body 1 comprises a gear box 1-1, a pedal 1-2, a vehicle head 1-3, a front wheel frame 1-4, a vehicle tail frame 1-5 and a chain guard plate 1-6, wherein the vehicle head 1-3 and the gear box 1-1 are integrally formed.
The inside of the gear box 1-1 is provided with 4 bearing seats 1-13 and spring hanging points 1-14, the right side of the gear box 1-1 is provided with a through hole 1-11 for penetrating through an output shaft of the secondary gear transmission mechanism, and the gear box 1-1 is externally assembled with a chain wheel. The lugs 1-12 are arranged right below the gear box 1-1 and are connected with pedal of the primary chain transmission mechanism (used for limiting rotation connection) through bolts, so as to provide a fulcrum for pedal. The upper half part of the bearing seat is arranged on the box cover plate 1-7 of the gear box 1-1, and the upper half part and the bearing seat in the gear box jointly support four bearings, and the box cover plate 1-7 is connected with the gear box 1-1 through screws.
The pedal 1-2 is arranged above the gear box 1-1 and is flush with the box cover plate 1-7, and the chain guard plate 1-6 is welded on the outer side edge of the gear box 1-1, so that not only can the chain wheel and the second chain greasy dirt be prevented from polluting clothes of a user, but also the clothes can be prevented from being blocked into a chain wheel gap to cause transmission obstacle in the chain transmission process.
The front part of the headstock 1-3 is fixedly connected with the center of the front wheel frame 1-4 through a double-end stud, and two ends of the headstock 1-3 are respectively welded with one hanging lug 1-31 for hanging a steering spring.
The tail frame 1-5 is welded at the tail part of the gear box 1-1 and is used for supporting a rear wheel shaft. In the embodiment, rib plates 1-51 are designed at the turning position of the tail frame so as to strengthen the supporting strength and toughness and have the function of shock absorption.
In this embodiment 1, the placement heights of the 4 bearing seats can be set by those skilled in the art according to the actual dimensions, and the heights should be appropriate to ensure that a certain gap is left between the gear and the lower wall of the gear housing. The suspension point of the spring is proper to ensure that the first chain correctly drives the flywheel I to rotate.
In the invention, gray cast iron HT150 is selected as a material of a main body part of a vehicle body in the gear box 1-1, and deformed aluminum alloy 5A05 is selected as a chain guard plate 1-6 and a tailstock material 1-7.
The two front wheels 8 are symmetrically arranged at two ends of the front wheel frame 1-4 respectively, and the rear wheel 9 is arranged on the tail frame 1-5 through a rear wheel shaft 9-1;
the brake assembly 10 comprises a brake pad 10-1 and a brake pad pressing plate 10-2, one end of the brake pad 10-1 is fixedly pressed at the tail of the box cover plate 1-7 through the brake pad pressing plate 10-2, and the brake pad 10-1 is located right above the rear wheel.
The telescopic handlebar 2 comprises a handlebar rod 2-1, a telescopic sleeve rod 2-2 and a telescopic sleeve 2-3, wherein the bottom end of the telescopic sleeve rod 2-2 is connected with the bicycle head 1-3 through the folding mechanism, the other end of the telescopic sleeve rod 2-2 is screwed with the telescopic sleeve 2-3 through threads, and the handlebar rod 2-1 is connected with the telescopic sleeve rod 2-2 through the telescopic sleeve 2-3. In this embodiment 1, the overall height of the telescopic handle bar 2 is adjustable, and the rust-proof aluminum alloy 5a05 is selected as the material, so that the weight is light and the strength meets the use requirement.
The folding mechanism comprises a folding sleeve 3-1, a mounting seat 1-32 is arranged on the headstock 1-3, a hollow semi-cylinder 1-33 is arranged on the mounting seat 1-32, a cylinder groove 1-34 is arranged on the headstock 1-3 below the hollow semi-cylinder 1-33, the folding sleeve 3-1 is sleeved on a telescopic sleeve rod 2-2 and is in threaded connection with the inner wall of the hollow semi-cylinder 1-33, two vertical rivet grooves 2-21 are arranged on two sides of the bottom end of the telescopic sleeve rod 2-2, as shown in fig. 9, the telescopic sleeve rod 2-2 is in limit riveting with a rivet 3-2 of the mounting seat 1-32 through the rivet grooves 2-21, the bottom end of the telescopic sleeve rod 2-2 is inserted in the cylinder groove 1-34, and a pin hole 1-35 is arranged on the mounting seat 1-32 and is used for being matched and fixed with the bolt and the rivet grooves 2-21.
In this embodiment 1, the specific folding manner of the retractable handle bar is as follows:
when the telescopic handle is needed to be used, the telescopic sleeve rod 2-2 can be inserted into the cylindrical groove 1-34, meanwhile, the folding sleeve 3-1 and the hollow half cylinder 1-33 are screwed tightly, and then the telescopic handle 2 is fixed and can be used. When the folding sleeve 3-1 is required to be stored in an idle mode, the folding sleeve 3-1 can be loosened, the folding sleeve 3-1 is slid to the rear of the telescopic sleeve rod 2-2, then the telescopic handle 2 is lifted upwards along the rivet groove 2-21 of the telescopic sleeve rod 2-2 (the rivet 3-2 is connected in the rivet groove 2-21 in a penetrating mode to limit the position), the folding sleeve is separated from the cylindrical groove 1-34, and the folding sleeve is put down to the rear of the automobile body, so that folding operation can be easily achieved. After folding, the bolt is inserted into the pin holes 1-35, the telescopic handle bar 2 can be fixed, and the telescopic handle bar 2 can be held by hands to lift the scooter, so that the scooter is convenient to move and carry.
The steering mechanism comprises two steering springs 4, the two steering springs 4 are symmetrically arranged on two sides of the vehicle head 1-3, one end of each steering spring 4 is connected with a hanging lug 1-31 on the vehicle head 1-3, and the other end of each steering spring is fixedly connected with the front wheel frame 1-4.
The operating principle of the steering mechanism in this embodiment 1 is as follows:
in the initial state, in order to place the wheel in the positive direction, the two steering springs 4 should be in a stretched state. When a user holds the telescopic handle bar 2 and leans to the left in the body center of gravity, the steering spring 4 on the right stretches, the steering spring 4 on the left contracts, and the common axis of the two front wheels is offset by a certain angle, so that the left turning of the scooter is realized. When the body of the user is righted and the gravity center of the body is positioned at the center of the scooter, the steering spring 4 on the right is contracted, the steering spring 4 on the left is stretched to a certain extent, and the advancing direction is forward. Similarly, turning right and homing of the traveling direction can be realized. In example 1, a carbon spring wire SL type was used as a steering spring material, and shot peening was performed.
As shown in FIG. 10, the primary chain transmission mechanism 5 comprises a pedal 5-1, a first chain 5-2, an extension spring 5-3 and a flywheel I5-4, wherein one end of the pedal 5-1 is connected with the gear box 1-1 through a bolt, one end of the first chain 5-2 is connected with a chain hook hole 5-11 on the pedal in a matched manner through a chain hook, the other end of the first chain 5-2 is connected with one end of the extension spring 5-3 after passing through the flywheel I5-4, the other end of the extension spring 5-3 is connected with a spring hanging point 1-14 on the inner side wall of the gear box 1-1, and the flywheel I5-4 is arranged on an input shaft 6-4 of a first gear 6-1 in the secondary gear transmission mechanism 6 in the gear box 1-1.
The secondary gear transmission mechanism 6 comprises a first gear 6-1 and a second gear 6-2, the first gear 6-1 and the second gear 6-2 are installed in a meshed mode, the first gear and the second gear 6-2 are installed in the gear box 1-1 through bearings 6-3 (deep groove ball bearings 6005 series), an input shaft 6-4 of the first gear 6-1 is installed coaxially with the flywheel I5-4, and an output shaft 6-5 of the second gear 6-2 penetrates through a through hole of the gear box 1-1 and is installed coaxially with a sprocket of the tertiary sprocket transmission mechanism. The first gear 6-1 and the second gear 6-2 are standard straight-tooth cylindrical gears.
The three-stage chain wheel transmission mechanism 7 is located below the chain guard plate 1-6 and comprises a chain wheel 7-1, a second chain 7-2 and a flywheel II7-3, wherein the chain wheel 7-1 and an output shaft 6-5 of the second gear 6-2 are coaxially installed and located on one side of the gear box 1-1, the flywheel II7-3 is connected with a rear wheel shaft of the rear wheel through a rear wheel shaft sleeve 7-4, and the second chain 7-2 is meshed and wound on the chain wheel 7-1 and the flywheel II 7-3.
In the invention, the working principle of each level of transmission mechanism is as follows:
as shown in fig. 12, the first stage transmission is a first stage chain transmission mechanism 5 consisting of a pedal 5-1, a first chain 5-2 and a flywheel I5-4. The user steps on the pedal 5-1 forward through the right foot, the first chain 5-2 connected with the pedal 5-1 drives the flywheel I5-4 to rotate anticlockwise, and simultaneously, the extension spring 5-3 connected with the tail end of the first chain 5-2 is extended. When the pedal 5-1 moves to the limit position, the flywheel I5-4 stops rotating. The user slowly releases the pedal 5-1 backward, the extension spring 5-3 connected to the end of the first chain 5-2 contracts to return to the original state, and the flywheel I5-4 is driven to rotate clockwise. The first stage transmission is that the integral transmission device inputs power and plays a role of power input.
The second-stage transmission is a second-stage gear transmission mechanism 6 formed by a first gear 6-1 and a second gear 6-2. The flywheel I5-4 in the primary chain transmission mechanism 5 is arranged on the input shaft 6-4 of the first gear 6-1, the flywheel I5-4 rotates anticlockwise and drives the first gear 6-1 on the same shaft to rotate anticlockwise, and the first gear 6-1 transmits motion to the second gear 6-2 on the output shaft 6-5 through meshing. Because of the motion characteristics of the flywheel, when the pedal 5-1 returns to the flywheel to rotate clockwise, power is not transmitted to the input shaft 6-4 of the first gear 6-1, so that the first gear 6-1 rotates intermittently during use. In the integral transmission device, the secondary gear transmission mechanism 6 is mainly used as a transmission transition link, relieves the impact caused by the first-stage transmission, ensures that the transmission is more stable, and maintains a more accurate transmission ratio.
The third stage transmission is a third stage sprocket transmission mechanism 7 composed of a sprocket 7-1, a second chain 7-2 and a flywheel II 7-3. The output shaft 6-5 of the second gear 6-2 and the sprocket 7-1 are coaxially assembled, and when the second gear 6-2 rotates clockwise, the sprocket 7-1 on the output shaft 6-5 rotates clockwise. The chain wheel 7-1 can drive the flywheel II7-3 to rotate clockwise by means of the second chain 7-2, and the flywheel II7-3 transmits torque to the rear wheel 9 through the rear wheel shaft sleeve 7-4 to drive the rear wheel 9 to perform clockwise turnover movement. The three-stage chain wheel transmission mechanism 7 is used as a power output device for providing power for the rear wheel, so that the scooter can stably move forwards.
The portable scooter bicycle designed in the embodiment 1 has the whole mass of about 20KG, the bearing capacity of 80KG and the speed per hour of not more than 10km/h. The rear wheel diameter d=240 mm, i.e. the maximum rotational speed does not exceed 222.2r/min. Fig. 11 shows a schematic of the various stages of the transmission. In this example 1, the rotational speed was set to 120r/min, i.e., the rotational speed of the axle III (rear axle)n 3 Based on this, gear ratio distribution is performed. Total gear ratioi 13 Chain transmission ratio of three-stage sprocket transmission mechanism =1/4i 23 =1/2, gear ratio of the secondary gear transmission mechanism:i 12 =1/2. Calculating the rotation speed of the shaft III (rear wheel shaft) according to the transmission ration 3 =120r/min, shaft II (output shaft) rotationQuick speedn 2 =60 r/min, shaft I (input shaft) rotational speedn 1 =30r/min。
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (9)

1. A portable scooter bicycle is characterized by comprising a bicycle body, a telescopic handlebar, a folding mechanism, a steering mechanism, a rear wheel, two front wheels, a primary chain transmission mechanism, a secondary gear transmission mechanism and a tertiary chain wheel transmission mechanism, wherein,
the automobile body comprises a gear box, a pedal, an automobile head, a front wheel carrier, an automobile tail frame, a chain guard board and a box cover board, wherein the automobile head and the gear box are integrally formed, the front part of the automobile head is fixedly connected with the center of the front wheel carrier, one side of the gear box is provided with a through hole for passing through an output shaft of a secondary gear transmission mechanism, the box cover board is connected with the top of the gear box through a screw, the pedal is installed above the gear box and is flush with the box cover board, the automobile tail frame is fixedly installed at the tail part of the gear box and used for supporting a rear wheel shaft, and the chain guard board is arranged on the outer side of the gear box;
the telescopic handle bar is arranged on the vehicle head through a folding mechanism, the two front wheels are symmetrically arranged at two ends of the front wheel frame respectively, and the rear wheels are arranged on the vehicle tail frame through rear wheel shafts;
the steering mechanism is arranged on the front wheel frame, the primary chain wheel transmission mechanism is arranged on the vehicle body, the output end of the primary chain wheel transmission mechanism is connected with the input end of the secondary gear transmission mechanism, the secondary gear transmission mechanism is arranged in the gear box, the output shaft of the secondary gear transmission mechanism penetrates through a through hole of the gear box and is coaxially arranged with the input end of the tertiary chain wheel transmission mechanism, the output end of the tertiary chain wheel transmission mechanism is connected with a rear wheel shaft of the rear wheel through a rear wheel shaft sleeve, and the tertiary chain wheel transmission mechanism is positioned below the chain guard plate.
2. The portable scooter bicycle as claimed in claim 1, wherein the retractable handle bar comprises a handle bar, a retractable loop bar and a retractable sleeve, wherein the bottom end of the retractable loop bar is connected with the bicycle head through the folding mechanism, the other end of the retractable loop bar is screwed with the retractable sleeve through threads, and the handle bar is connected with the retractable sleeve through the retractable sleeve.
3. The portable scooter bicycle according to claim 2, wherein the folding mechanism comprises a folding sleeve, a mounting seat is arranged on the bicycle head, a hollow semi-cylinder is arranged on the mounting seat, a cylinder groove is arranged on the bicycle head below the hollow semi-cylinder, the folding sleeve is sleeved on a telescopic sleeve rod and is in threaded connection with the inner wall of the hollow semi-cylinder, two vertical rivet grooves are arranged on two sides of the bottom end of the telescopic sleeve rod, the telescopic sleeve rod is riveted with the rivet on the mounting seat in a limiting manner through the rivet grooves, the bottom end of the telescopic sleeve rod is inserted into the cylinder groove, a pin hole is further formed in the mounting seat, and a telescopic handlebar is fixed through the cooperation of a bolt and the rivet grooves.
4. The portable scooter type bicycle as claimed in claim 1, wherein the steering mechanism comprises two steering springs symmetrically arranged at both sides of the bicycle head, one end of the steering spring is connected with the bicycle head, and the other end is fixedly connected with the front wheel frame.
5. The portable scooter type bicycle as claimed in claim 1, wherein the primary chain transmission mechanism comprises a pedal, a first chain, an extension spring and a flywheel I, one end of the pedal is connected with the gear box through a bolt, one end of the first chain is connected with a chain hook hole on the pedal through a chain hook in a matching way, the other end of the first chain is connected with one end of the extension spring after bypassing the flywheel I, the other end of the extension spring is connected with a spring hanging point on the inner side wall of the gear box, and the flywheel I is arranged on an input shaft of a first gear in the secondary gear transmission mechanism in the gear box.
6. The portable scooter of claim 5, wherein the secondary gear transmission comprises a first gear and a second gear, the first gear and the second gear are mounted in engagement with each other and mounted in a gear box through bearings, an input shaft of the first gear is mounted coaxially with the flywheel I, and an output shaft of the second gear is mounted coaxially with a sprocket of the tertiary sprocket transmission through a through hole of the gear box.
7. The portable scooter of claim 6, wherein the three stage sprocket drive mechanism comprises a sprocket mounted coaxially with an output shaft of the second gear and located on one side of the gearbox, a second chain connected to a rear axle of the rear wheel by a rear wheel hub, and a freewheel II engaged by the sprocket and freewheel II.
8. The portable skateboard bicycle of claim 6, wherein the first gear and the second gear are each standard spur gears.
9. The portable skateboard bicycle of claim 1, further comprising a brake assembly comprising a brake pad and a brake pad pressure plate, wherein one end of the brake pad is secured to the tail of the housing cover plate by the brake pad pressure plate, and the brake pad is positioned directly above the rear wheel.
CN202210426693.5A 2022-04-21 2022-04-21 Portable skateboard bicycle Pending CN116968854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210426693.5A CN116968854A (en) 2022-04-21 2022-04-21 Portable skateboard bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210426693.5A CN116968854A (en) 2022-04-21 2022-04-21 Portable skateboard bicycle

Publications (1)

Publication Number Publication Date
CN116968854A true CN116968854A (en) 2023-10-31

Family

ID=88480114

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210426693.5A Pending CN116968854A (en) 2022-04-21 2022-04-21 Portable skateboard bicycle

Country Status (1)

Country Link
CN (1) CN116968854A (en)

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