Bicycle accessories encompass all parts and attachments of a bicycle body. They can be categorized into several major groups based on the large structural framework of the body: frame, tires, pedal components, fork assembly, chain, freewheel, and more.

In a bicycle, every component from the frame, tires, pedals, brakes, to the chain, is indispensable, with 25 parts in total. The frame, serving as the skeleton of the bicycle, bears the weight of both people and cargo. Based on the working characteristics of each part, they can be roughly categorized into the guidance system, drive system, and braking system.

Key Components:

Chassis:

Frame components are the fundamental structural elements that make up a bicycle, serving as its skeleton and main body. Other parts are either directly or indirectly mounted onto the frame. There are various structural forms for frame components, but they can generally be categorized into two main types: men's frames and women's frames.

Frames are typically made by welding and assembling standard carbon steel tubes. To reduce tube weight and enhance strength, bicycles are manufactured using low-alloy steel tubes. Some bicycles also feature streamlined steel tubes to minimize resistance at high speeds.

Due to bicycles relying on human power and riding skills for propulsion, the frame becomes a crucial structure that withstands the impact loads generated during movement and ensures a comfortable and safe transportation of the rider. The precision of the frame components directly affects the safety, stability, and speed of the ride. Generally, spokes are of equal diameter, but some are made with varying diameters—larger at both ends and smaller in the middle—to reduce weight. Additionally, to minimize air resistance, spokes are sometimes designed in a flat, aerodynamic shape.

2. Tire:

The tires are divided into two types: soft-edge and hard-edge tires. Soft-edge tires have a wider cross-section, fully covering the inner tube, with a larger contact area suitable for various road conditions. Hard-edge tires are lighter in weight, with a smaller contact area, ideal for smooth roads, offering advantages such as low resistance and smooth driving.

The tread patterns on the outer tires are designed to increase friction with the ground. The tires on mountain bikes are particularly wide and have deeper tread patterns to accommodate off-road terrain. In contrast, the tires on road bikes are exceptionally narrow with shallower tread patterns, suitable for road use.

3. Foot pedal

The pedal components are assembled on the left and right cranks of the center shaft, serving as a device that converts linear motion into rotational force. During cycling, the foot power is first transmitted to the pedal components, which then rotate the cranks, the chainring, the center shaft, the chain, and the freewheel, causing the rear wheel to turn and propelling the bicycle forward. Therefore, the structure and specifications of the pedal components directly impact the appropriateness of the rider's foot placement and the smooth operation of the bicycle's drive.

Footrests: They can be divided into integral footrests and assembled footrests. Any type of footrest must have a footrest surface, ensuring safety and reliability with anti-slip properties. Materials such as rubber, plastic, or metal can be used for manufacturing. The footrest must rotate smoothly.

4. Fork Components

The front fork component is positioned at the front of the bicycle structure, connecting to the handlebar assembly at the top, aligning with the frame assembly at the front tube, and mating with the front axle assembly at the bottom, forming the bicycle's guidance system.

Twisting the handlebars and front fork allows the front wheel to change direction, serving as the bicycle's directional guide. Additionally, it also plays a role in controlling the bicycle's movement.

The fork components exhibit a cantilever beam loading condition, thus necessitating sufficient strength and other properties for the fork components.

5. Chain

Chains, also known as bicycle chains or roller chains, are installed on sprockets and flywheels. Their function is to transfer the pedaling force from the cranks and sprockets to the flywheel and rear wheel, propelling the bicycle forward.

Chain Sprocket: Made from high-strength steel to ensure it meets the required tensile strength.

6. Flywheel

The freewheel is threaded and拧紧固定 on the right end of the rear axle, maintaining the same plane as the sprocket, and connected to it via a chain, forming the bicycle's drive system. Structurally, it can be divided into two main categories: single-speed freewheel and multi-speed freewheel.

The Single-stage Flywheel, also known as the Single Chain Ring Flywheel, is primarily composed of parts such as the outer shell, flat stopper, core, jack, jack spring, washer, screw stop, and several steel balls.

The single-stage flywheel's working principle: As you pedal forward, the chain drives the flywheel to rotate forward. At this point, the internal teeth of the flywheel engage with the ratchet, transferring the rotational force of the flywheel to the core through the ratchet. The core then drives the rear axle and wheel, propelling the bicycle forward.

When the pedals are not being pedaled, neither the chain nor the casing rotates, but the rear wheel still drives the core and the spring forward due to inertia. At this point, the inner teeth of the flywheel slide relative to each other, compressing the core into the slot of the core and compressing the spring of the spring. When the top of the spring tooth reaches the top of the flywheel's inner teeth, the spring is compressed more, and with a slight further slide, the spring pushes the spring to the root of the tooth, producing a "clack" sound. The core rotates faster, and the spring also quickly slides on each inner tooth of the flywheel, emitting a "clack" sound. When the pedals are pushed in the opposite direction, the casing rotates in the opposite direction, accelerating the sliding of the spring, making the "clack" sound more urgent. The multi-level flywheel is an important component of the bicycle's gear shifting mechanism.

The Multi-Level Flywheel is an enhancement of the single-level flywheel, featuring additional wheel blades that combine with the chain wheel on the central shaft to create various transmission ratios, thereby altering the speed of the bicycle. Single Section Series Folding Tube Manufacturer - Shenzhen Zhihangda Technology Co., Ltd. welcomes your inquiries and negotiations...