Height-adjustable seat post for bicycle
By adopting the sealing arrangement of piston assembly and plug assembly in the bicycle seatpost, the problem of unreliable sealing in the prior art is solved, and a more reliable sealing effect is achieved.
CN119682892APending Publication Date: 2025-03-25SRAM LLC
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Patent Information
- Application Number
- CN202411325163.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-09-25
- Filing Date
- 2024-09-23
- Publication Date
- 2025-03-25
AI Technical Summary
Technical Problem
The seal arrangement of existing bicycle seatposts is susceptible to extrusion and deformation at medium/high air pressures, resulting in unreliable seals.
Method used
A piston assembly with a valve operated by a piston and solenoid, the valve includes a movable plug assembly including a plug, a seal and a seal holder, the seal coupled to and moving with the plug, ensuring that the seal engages with the piston in a closed position and blocks the flow of fluid through the piston.
Benefits of technology
A more reliable seal is achieved under medium/high air pressure, reducing the impact of extrusion and deformation, and improving the sealing performance of the seatpost.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a height adjustable seatpost for a bicycle. An exemplary height adjustable seatpost includes an upper tube and a lower tube configured in a telescopic arrangement. The height adjustable seating post includes a piston assembly in the upper tube that divides the upper tube into a first chamber and a second chamber. The piston assembly includes a valve to control fluid flow between the first chamber and the second chamber. The height adjustable seating post also includes an actuator for operating the valve. The height adjustable seatpost further includes a connector assembly connected to the lower tube. The connector assembly is for connection to a mating connector assembly on a bicycle. The connector assembly includes a magnetic connector, the magnetic connector including: a housing having an end face with an opening; a first electrical contact and a second electrical contact in the opening; and a magnet disposed in the housing and spaced apart from an end face of the housing.
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