Seat tube and battery integrated structure

By designing an integrated seatpost and battery structure, the problem of separate seatpost and battery settings in electric-assist bicycles has been solved, resulting in improved structural strength, a simpler appearance, and reduced processing costs, while the installation of the saddle tube remains unaffected.

CN224277416UActive Publication Date: 2026-05-26TIANJIN GOLDEN WHEEL XINDE BICYCLE IND
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Patent Information

Application Number
CN202521746878.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-17
Publication Date
2026-05-26
Estimated Expiration
2035-08-17

AI Technical Summary

Technical Problem

The seat post and battery of existing electric-assist bicycles are usually set separately, which affects the structural strength, increases the complexity and cost of processing, and is not conducive to the installation of the saddle post.

Method used

A battery-seat integrated structure is designed, which combines the battery outer tube with the rear wall of the seat tube, and fixes the battery module with a fixing block at the bottom of the inner cavity. The wiring harness passes through the bottom wire hole, and the top cover seals the upper port, simplifying the manufacturing process.

Benefits of technology

It improves the overall structural strength and appearance simplicity, simplifies the processing technology, reduces costs, and does not affect the installation and adjustment of the saddle tube.

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Abstract

The utility model relates to a seat tube and battery integrated structure. Comprising a seat tube, a battery outer tube is arranged on the rear wall of the seat tube, a bottom cover with a wire hole in the middle is arranged on a lower port of the battery outer tube, a detachable top cover is installed in an upper port of the battery outer tube, a fixing rubber block with a center hole is arranged at the bottom of an inner cavity of the battery outer tube, and an embedding groove is formed in the middle of the top of the fixing rubber block. A battery module is further arranged in the battery outer tube, the lower end of the battery module is embedded into an embedding groove of the fixing rubber block, the top cover is pressed at the upper end of the battery module, and the battery further comprises a wire harness connected with the battery module, and the wire harness penetrates through a center hole of the fixing rubber block and penetrates out of a wire hole. According to the seat tube and battery integrated structure provided by the utility model, the seat tube and the battery are better fused, the overall structural strength and the appearance conciseness are improved, the installation of the saddle tube is not influenced, and the processing technology is simplified so as to reduce the processing and manufacturing cost.
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