Height-Adjustable Seat Post

Simple SummaryContent extracted from patent full text and abstract with AI.

The invention is a height-adjustable bicycle seat post that uses a mechanical, friction-based locking and adjustment mechanism. It consists of an inner tube that moves within an outer tube. A push rod inside the inner tube, controlled by a lever near the saddle, moves between two positions to either lock the inner tube (and thus the saddle height) securely in place using friction, or allow for easy adjustment of the saddle height. The system operates without hydraulics or pneumatics and offers stepless height adjustment during riding.

Use CasesContent extracted from patent full text and abstract with AI.

• Bicycles allowing riders to adjust saddle height on-the-fly for different terrains (e.g. mountain biking, commuting, road cycling).
• E-bikes and suspension bikes requiring fast changes in seat position.
• Bike sharing systems to enable quick seat height adaptation for multiple users.
• Mobility or rehabilitation devices where frequent user-specific adjustments of seating height are desirable.

BenefitsContent extracted from patent full text and abstract with AI.

• Simple, robust fully-mechanical design without hydraulic or pneumatic components, making it lighter and potentially more reliable.
• Stepless (infinitely variable) adjustment of saddle height, offering precise comfort and performance adaptation.
• Height adjustment can be made while riding, improving safety and user experience, especially in changing terrains.
• Easier and potentially less expensive manufacturing and maintenance due to mechanical simplicity.
• Friction-based locking provides strong holding power to securely support a rider’s weight.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a height-adjustable seat pillar, particularly for a bicycle, comprising an inner tube (1), which comprises a first end and an opposite second end, wherein a seat can be fastened in the area of the first end, and the second end of the inner tube (1) can be positioned in an outer tube (2). The seat pillar according to the invention comprises a push rod (5) which is arranged in the inner tube (1), extends substantially in the longitudinal direction of the inner tube (1), and can be moved in the longitudinal direction of the inner tube (1) between a first position and a second position by means of an actuation element (17). The seat pillar according to the invention further comprises a compression element (6, 7, 7', 9) which is arranged in the inner tube (1) and which interacts with the push rod (5). In the first position of the push rod (5), a force is exerted on the compression element (6, 7, 7', 9) by the push rod (5) in such a way that the compression element (6, 7, 7', 9) produces a compression directed at the inner tube (1), wherein the inner tube (1), when positioned in the outer tube (2), is locked by said compression due to friction closure between the inner tube (1) and outer tube (2). In the second position of the push rod (5), the force that is exerted on the compression element (6, 7, 7', 9) in the first position is reduced so that the compression of the compression element (6, 7, 7', 9) on the inner tube (1) decreases and the inner tube (1), when positioned in the outer tube (2), can be moved therein.