Office Chair Frame Bracket

Office chair frame brackets come in various types, with prices varying based on material, design, and functionality. Here is a popular science introduction covering common types, price ranges, and characteristics:

1. Plastic Backrest Frame Bracket
Represented by black plastic backrest skeletons, these brackets are typically paired with mesh backrest designs and are suitable for basic office settings. Their core advantages are lightweight and low cost, with prices mostly in the 30-50 yuan range (e.g., reference price ¥36.0). These brackets are often molded from engineering plastics, featuring a simple structure but limited load-bearing capacity. Long-term use may lead to deformation due to aging, making them suitable for budget-constrained or short-term use scenarios.

2. Metal Bow Frame
Typified by bow-shaped metal skeletons, these brackets are commonly found in fixed computer chairs, forming a stable structure through bent steel tubes. They are characterized by high strength and durability, with a wide price range. Ordinary models cost around 150-200 yuan (e.g., reference price ¥158.0), while high-end models may exceed 300 yuan. Metal materials can withstand significant weight and are not prone to deformation, but they are heavy and inconvenient to move, making them suitable for fixed workstations or conference rooms.

3. Adjustable Metal Frame
These metal frames integrate pneumatic rods or mechanical lifting mechanisms, supporting height adjustment functions and are commonly found in multifunctional office chairs. Prices mostly range from 160-300 yuan (e.g., reference prices ¥168.0, ¥266.48), with high-end models possibly equipped with more complex adjustment mechanisms (e.g., lumbar support, armrest linkage). These brackets must pass safety certifications (e.g., BIFMA standards) to ensure the explosion-proof performance of the pneumatic rods, making them suitable for users who need flexible sitting posture adjustments.

4. Five-Star/Four-Star Foot Brackets
As the core support components of swivel chairs, five-star (five-claw) and four-star (four-claw) foot brackets are made through metal casting or stamping processes, with materials including electroplated steel, aluminum alloy, etc. Prices vary significantly:

• Electroplated Steel Five-Star Foot: Basic models cost around 40-60 yuan (e.g., reference price ¥42.0), with a chrome-plated surface for rust prevention and a load-bearing capacity of over 100kg;
• Aluminum Alloy Die-Cast Five-Star Foot: Featuring a lightweight design, prices are around 120-150 yuan (e.g., reference price ¥130.0), suitable for high-end office chairs;
• Four-Star Foot Bracket: Due to its complex structure, prices are higher (e.g., reference price ¥270.0), mostly used in executive chairs or leisure chairs, emphasizing stability and aesthetics.

5. Accessory Brackets
Such as L-shaped angle iron brackets (reference price ¥1.2), used to fix the connection between the backrest and seat surface, are auxiliary accessories. Although these brackets have a low unit price, they are crucial for the overall structural stability and must be selected to match the material of the main frame.

Purchase Recommendations:

• For budget-constrained and simple needs, choose plastic backrest or basic metal bow frames;
• For height adjustment functions or long-term use, prioritize metal frames that have passed safety certifications;
• For high-end scenarios, consider aluminum alloy five-star or four-star feet, balancing durability and design aesthetics.