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Shenzhen Zhihangda Technology Co., Ltd.
Address: Building 117, Minsheng Industrial City, No. 37, Minsheng Road, Gongming Street Office, Guangming District, Shenzhen
Contact: Mr. He Gang
Mobile: 138-2378-2061
Phone: 0755-27192623
4News -> Industry Information
About folding bicycle knowledge explanation and application
Next, the editor of Shenzhen Zhihangda Technology Co., Ltd. will give you a detailed introduction. The knowledge and application of folding bicycles are as follows:
Folding bicycle-Introduction Its characteristic is that the car uses a lift hand brake to lift the axle of the whole vehicle upwards and fold it into an ultra-small axle-centered portable folding bicycle. The whole structure is folded and put into a cloth bag (bag) to become a folding bicycle. Integrated structure.
In production, it is necessary to use a locking hinge to connect the frame with the faucet and the car seat; the locking hinge is equipped with springs, steel cables (wire brake), etc., which is convenient for operation; the lifting hand brake can control the locking hinge, Ensure safety and convenience. The utility model has novel conception, simple and reasonable structure, can be easily folded and unfolded, is convenient and comfortable to carry and use, has mature production technology, is easy to popularize, and has a very promising market prospect so far. Folding bicycles are convenient, practical, scientific and reasonable in design, and full of innovation. The current market sales are very good. [1] Folding bicycle-component composition ① Body part: including frame, front fork, handlebar, saddle and front fork assembly, etc., is the main body of the bicycle. ② Transmission part: including pedals, cranks, sprockets, chains, bottom axles and flywheels, etc. The pedals are stepped on by humans, and the wheels are driven to rotate through the above transmission parts to drive the car forward. ③ Action part: namely front and rear wheels, including front and rear axle components, spokes, rims (rims), tires, etc. ④Safety devices: including brakes (brakes), lights, bells, reflection devices, etc.
According to needs, some accessories can be added, such as brackets, hangers, safety forks, mudguards, air cylinders, etc. In addition, sports cars, racing cars, mountain bikes, etc. equipped with a transmission mechanism are also equipped with a transmission controller and front and rear derailleurs. Folding bicycle-detailed explanation of parts 1. Frame parts: It is the basic structure of the bicycle, and is also the skeleton and main body of the bicycle. Other parts are also directly or indirectly installed on the frame. There are many structural forms of frame components, but the overall structure can be divided into two categories: men's frames and women's frames. The frame is generally welded and assembled by ordinary carbon copper tubes. In order to reduce the weight of the tube and increase its strength, higher-end bicycles are made of low-alloy steel tubes. In order to reduce the resistance of fast driving, some bicycles also use streamlined steel pipes.
Because the bicycle is driven by the human body's own driving force and riding skills, the frame becomes an important structural body that can withstand the impact load generated by the bicycle during driving and whether it can carry the human body comfortably and safely. The manufacturing accuracy of the frame components The pros and cons will directly affect the safety, stability and briskness of riding.
Generally speaking, the spokes are of equal diameter:
1. In order to reduce gravity, there are also variable-diameter spokes with large ends and small middle, and in order to reduce air resistance, the spokes are made into flat and streamlined spokes.
2. Tires: There are two types: soft-sided tires and hard-sided tires. The soft-sided tire has a wide cross-section, can completely wrap the inner tube, and has a relatively large landing area, which is suitable for driving on various roads. Hard-sided tires are light in weight, have a small footprint, and are suitable for driving on flat roads. They have the advantages of low resistance and light driving. The pattern on the tire is to increase the friction with the ground. The tires of mountain bikes are very wide and the pattern is deeper, which is suitable for off-road and mountain use.
3. Pedal components: The pedal components are assembled on the left and right cranks of the central axis component. It is a device that converts the horizontal force into rotation force. When a bicycle is riding, the pedal force is first transmitted to the pedal components, and then The pedal shaft rotates the crank, the middle shaft, and the chain flywheel to rotate the rear wheel, thereby enabling the bicycle to move forward. Therefore, whether the structure and specifications of the pedal components are appropriate will directly affect whether the rider's foot position is appropriate and whether the bicycle can be driven smoothly. Pedals: can be divided into integral pedals and combined pedals. No matter what style of pedals, they must have a pedal surface, must be safe and reliable, have a certain anti-skid performance, and can be made of rubber, plastic or metal materials. The pedals must be flexible.
4. Front fork component: The front fork component is in the front part of the bicycle structure. Its upper end is connected with the handlebar part, the frame part is matched with the front tube, and the lower end is matched with the front axle part to form the bicycle's guiding system. Rotating the handlebars and the front fork can change the direction of the front wheel, which serves as a guide for the bicycle. In addition, it can also play a role in controlling the driving of the bicycle. The force of the front fork is a cantilever beam, so the front fork must have sufficient strength and other properties.
5. Chain: Chain is also called car chain and roller chain, which is installed on the connecting wheel and flywheel. Its function is to transfer the pedaling force from the crank and the sprocket to the flywheel and the rear wheel to drive the bicycle forward. Sprocket: made of high-strength steel to ensure that it reaches the required tensile force.
6. Flywheel: The flywheel is screwed and fixed on the right end of the rear axle with internal threads, keeping the same plane with the sprocket, and is connected with the sprocket through a chain to form the driving system of the bicycle. From the structure, it can be divided into two categories: single-stage flywheel and multi-stage flywheel. Single-stage flywheel, also known as single-sprocket flywheel, is mainly composed of outer cover, flat gear and core, jack, jack spring, washer, wire stop and steel balls. The working principle of the single-stage flywheel: when the pedal is stepped forward, the chain drives the flywheel to rotate forward. At this time, the inner teeth of the flywheel and the jack are involved, and the rotating force of the flywheel is transmitted to the core through the jack, and the core drives the rear axle and The rear wheel turns and the bicycle moves forward. When the pedal is stopped, the chain and the jacket do not rotate, but the rear wheel still drives the core and the jack to rotate forward under the action of inertia. At this time, the inner teeth of the flywheel slide relatively, thereby compressing the core to the core. In the notch of the child, Qianjin compressed the spring again. When the jack tooth top slides to the top of the inner teeth of the flywheel, the jack spring is compressed the most, and then slides forward slightly, the jack is bounced on the tooth root by the jack spring, making a "click" sound. As the core rotates faster, Qianjin quickly slides on the inner teeth of each flywheel, making a "click" sound. The multi-stage flywheel is a single-stage flywheel. When the pedal is stepped in the reverse direction, the outer cover rotates in the reverse direction, which will accelerate the sliding of the jack and make the "click" sound more rapid. The multi-stage flywheel is a heavy foundation in the bicycle transmission device. Several flywheel pieces are added to combine with the sprocket on the bottom axle to form various transmission ratios, thereby changing the speed of the bicycle.
Folding bike frame design information Folding bike joint explanation:
The frame joint is the most critical part of the folding bike. It bears pressure from all aspects, so it must be very strong, and at the same time easy to operate and artistic in appearance. After more than two years of design, testing and FEA analysis, using cold forging and CNC technology, we have developed Lattice precision forged joints. Sonus? Frame tube: Designing a folding bike is as difficult as designing a non-folding bike. Although our bicycles are widely regarded as the best folding bikes in the industry, we are always looking for more perfect ways to improve our The strength and stiffness of the frame torque have always been our design goals. After countless tests and modifications, we finally determined a special shape, we call it SONUS tube, the design height of this tube is higher than the previous front and rear strength Excellent, and the tube is wide in appearance, flat in the bottom, and has greater resistance to torsion. SONUS tube is 35% higher in strength and hardness than the previous tube. Folding bicycles-How to choose a folding bicycle. From the rim size, the mainstream products of folding bicycles are mainly 16 inches and 20 inches (others are 12 inches, 14 inches, and 18 inches). Of course, if you have special needs, there are also 26 inches. The product. Generally speaking, products with a size of 16 inches and below have a smaller volume after being folded, which is conducive to storage and transportation, and is more suitable for short-distance riding. If you often want to ride long distances, you should consider a 20-inch product. Not only is the riding comfort better than 16-inch, but the frame will be stronger and faster. Of course, it is best to choose products with transmission for long-distance riding.
In terms of frame materials, there are mainly aluminum and steel. A very small number of magnesium alloys are used, and a very small number of high-end products use carbon fiber materials. If you often need to carry your car up and down stairs, it is recommended that you use aluminum frame products, most of which are about 10 kg, and 20-inch cars generally do not exceed 12.5 kg. Not only is the weight lighter, but the life of the aluminum frame products is also longer, so there is no need to worry about rust. Of course, the weight index alone is not enough. You should not ignore the strength of the frame. Some manufacturers just make a fuss about the weight. In fact, they reduce the weight by reducing the thickness of the frame material, and it is difficult to ensure that the frame has sufficient strength. It is best if you ride on it. Not only can you feel the strength of the frame, but you can also test whether the ergonomic design of the vehicle is reasonable. A good design can ensure that the riding posture is stretched and will not be fatigued even for long distances.
Folding bicycle-Introduction Its characteristic is that the car uses a lift hand brake to lift the axle of the whole vehicle upwards and fold it into an ultra-small axle-centered portable folding bicycle. The whole structure is folded and put into a cloth bag (bag) to become a folding bicycle. Integrated structure.
In production, it is necessary to use a locking hinge to connect the frame with the faucet and the car seat; the locking hinge is equipped with springs, steel cables (wire brake), etc., which is convenient for operation; the lifting hand brake can control the locking hinge, Ensure safety and convenience. The utility model has novel conception, simple and reasonable structure, can be easily folded and unfolded, is convenient and comfortable to carry and use, has mature production technology, is easy to popularize, and has a very promising market prospect so far. Folding bicycles are convenient, practical, scientific and reasonable in design, and full of innovation. The current market sales are very good. [1] Folding bicycle-component composition ① Body part: including frame, front fork, handlebar, saddle and front fork assembly, etc., is the main body of the bicycle. ② Transmission part: including pedals, cranks, sprockets, chains, bottom axles and flywheels, etc. The pedals are stepped on by humans, and the wheels are driven to rotate through the above transmission parts to drive the car forward. ③ Action part: namely front and rear wheels, including front and rear axle components, spokes, rims (rims), tires, etc. ④Safety devices: including brakes (brakes), lights, bells, reflection devices, etc.
According to needs, some accessories can be added, such as brackets, hangers, safety forks, mudguards, air cylinders, etc. In addition, sports cars, racing cars, mountain bikes, etc. equipped with a transmission mechanism are also equipped with a transmission controller and front and rear derailleurs. Folding bicycle-detailed explanation of parts 1. Frame parts: It is the basic structure of the bicycle, and is also the skeleton and main body of the bicycle. Other parts are also directly or indirectly installed on the frame. There are many structural forms of frame components, but the overall structure can be divided into two categories: men's frames and women's frames. The frame is generally welded and assembled by ordinary carbon copper tubes. In order to reduce the weight of the tube and increase its strength, higher-end bicycles are made of low-alloy steel tubes. In order to reduce the resistance of fast driving, some bicycles also use streamlined steel pipes.
Because the bicycle is driven by the human body's own driving force and riding skills, the frame becomes an important structural body that can withstand the impact load generated by the bicycle during driving and whether it can carry the human body comfortably and safely. The manufacturing accuracy of the frame components The pros and cons will directly affect the safety, stability and briskness of riding.
Generally speaking, the spokes are of equal diameter:
1. In order to reduce gravity, there are also variable-diameter spokes with large ends and small middle, and in order to reduce air resistance, the spokes are made into flat and streamlined spokes.
2. Tires: There are two types: soft-sided tires and hard-sided tires. The soft-sided tire has a wide cross-section, can completely wrap the inner tube, and has a relatively large landing area, which is suitable for driving on various roads. Hard-sided tires are light in weight, have a small footprint, and are suitable for driving on flat roads. They have the advantages of low resistance and light driving. The pattern on the tire is to increase the friction with the ground. The tires of mountain bikes are very wide and the pattern is deeper, which is suitable for off-road and mountain use.
3. Pedal components: The pedal components are assembled on the left and right cranks of the central axis component. It is a device that converts the horizontal force into rotation force. When a bicycle is riding, the pedal force is first transmitted to the pedal components, and then The pedal shaft rotates the crank, the middle shaft, and the chain flywheel to rotate the rear wheel, thereby enabling the bicycle to move forward. Therefore, whether the structure and specifications of the pedal components are appropriate will directly affect whether the rider's foot position is appropriate and whether the bicycle can be driven smoothly. Pedals: can be divided into integral pedals and combined pedals. No matter what style of pedals, they must have a pedal surface, must be safe and reliable, have a certain anti-skid performance, and can be made of rubber, plastic or metal materials. The pedals must be flexible.
4. Front fork component: The front fork component is in the front part of the bicycle structure. Its upper end is connected with the handlebar part, the frame part is matched with the front tube, and the lower end is matched with the front axle part to form the bicycle's guiding system. Rotating the handlebars and the front fork can change the direction of the front wheel, which serves as a guide for the bicycle. In addition, it can also play a role in controlling the driving of the bicycle. The force of the front fork is a cantilever beam, so the front fork must have sufficient strength and other properties.
5. Chain: Chain is also called car chain and roller chain, which is installed on the connecting wheel and flywheel. Its function is to transfer the pedaling force from the crank and the sprocket to the flywheel and the rear wheel to drive the bicycle forward. Sprocket: made of high-strength steel to ensure that it reaches the required tensile force.
6. Flywheel: The flywheel is screwed and fixed on the right end of the rear axle with internal threads, keeping the same plane with the sprocket, and is connected with the sprocket through a chain to form the driving system of the bicycle. From the structure, it can be divided into two categories: single-stage flywheel and multi-stage flywheel. Single-stage flywheel, also known as single-sprocket flywheel, is mainly composed of outer cover, flat gear and core, jack, jack spring, washer, wire stop and steel balls. The working principle of the single-stage flywheel: when the pedal is stepped forward, the chain drives the flywheel to rotate forward. At this time, the inner teeth of the flywheel and the jack are involved, and the rotating force of the flywheel is transmitted to the core through the jack, and the core drives the rear axle and The rear wheel turns and the bicycle moves forward. When the pedal is stopped, the chain and the jacket do not rotate, but the rear wheel still drives the core and the jack to rotate forward under the action of inertia. At this time, the inner teeth of the flywheel slide relatively, thereby compressing the core to the core. In the notch of the child, Qianjin compressed the spring again. When the jack tooth top slides to the top of the inner teeth of the flywheel, the jack spring is compressed the most, and then slides forward slightly, the jack is bounced on the tooth root by the jack spring, making a "click" sound. As the core rotates faster, Qianjin quickly slides on the inner teeth of each flywheel, making a "click" sound. The multi-stage flywheel is a single-stage flywheel. When the pedal is stepped in the reverse direction, the outer cover rotates in the reverse direction, which will accelerate the sliding of the jack and make the "click" sound more rapid. The multi-stage flywheel is a heavy foundation in the bicycle transmission device. Several flywheel pieces are added to combine with the sprocket on the bottom axle to form various transmission ratios, thereby changing the speed of the bicycle.
Folding bike frame design information Folding bike joint explanation:
The frame joint is the most critical part of the folding bike. It bears pressure from all aspects, so it must be very strong, and at the same time easy to operate and artistic in appearance. After more than two years of design, testing and FEA analysis, using cold forging and CNC technology, we have developed Lattice precision forged joints. Sonus? Frame tube: Designing a folding bike is as difficult as designing a non-folding bike. Although our bicycles are widely regarded as the best folding bikes in the industry, we are always looking for more perfect ways to improve our The strength and stiffness of the frame torque have always been our design goals. After countless tests and modifications, we finally determined a special shape, we call it SONUS tube, the design height of this tube is higher than the previous front and rear strength Excellent, and the tube is wide in appearance, flat in the bottom, and has greater resistance to torsion. SONUS tube is 35% higher in strength and hardness than the previous tube. Folding bicycles-How to choose a folding bicycle. From the rim size, the mainstream products of folding bicycles are mainly 16 inches and 20 inches (others are 12 inches, 14 inches, and 18 inches). Of course, if you have special needs, there are also 26 inches. The product. Generally speaking, products with a size of 16 inches and below have a smaller volume after being folded, which is conducive to storage and transportation, and is more suitable for short-distance riding. If you often want to ride long distances, you should consider a 20-inch product. Not only is the riding comfort better than 16-inch, but the frame will be stronger and faster. Of course, it is best to choose products with transmission for long-distance riding.
In terms of frame materials, there are mainly aluminum and steel. A very small number of magnesium alloys are used, and a very small number of high-end products use carbon fiber materials. If you often need to carry your car up and down stairs, it is recommended that you use aluminum frame products, most of which are about 10 kg, and 20-inch cars generally do not exceed 12.5 kg. Not only is the weight lighter, but the life of the aluminum frame products is also longer, so there is no need to worry about rust. Of course, the weight index alone is not enough. You should not ignore the strength of the frame. Some manufacturers just make a fuss about the weight. In fact, they reduce the weight by reducing the thickness of the frame material, and it is difficult to ensure that the frame has sufficient strength. It is best if you ride on it. Not only can you feel the strength of the frame, but you can also test whether the ergonomic design of the vehicle is reasonable. A good design can ensure that the riding posture is stretched and will not be fatigued even for long distances.
