A device to transform a bicycle into a cargo bike.
A bicycle transformation device addresses the lack of passenger and cargo capacity in conventional bikes by attaching to key frame points, enhancing their utility for daily commuting.
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Utility models
- Current Assignee / Owner
- COULOIGNER GEOFFREY
- Filing Date
- 2024-05-17
- Publication Date
- 2026-04-24
AI Technical Summary
Existing bicycles are not designed to efficiently transport multiple passengers or goods, limiting their practicality for daily commuting needs.
A device that attaches to a conventional bicycle using three points (seat tube, luggage rack, and front fork) with a base, spacers, threaded rods, and clamping systems, along with platforms for easy accessory attachment, transforming it into a cargo bike.
Enables efficient transport of multiple people and goods within the bicycle's weight limits, promoting cycling as a practical and economical alternative for daily journeys.
Smart Images
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Abstract
Description
Title of the invention: Device for transforming a bicycle into a cargo bike.
[0001] The present invention relates to a device for transforming a classic bicycle into a cargo bike in a few minutes [Fig.1] [Fig.2].
[0002] This invention provides a practical, economical, and environmentally friendly solution:
[0003] - Practical: the device can be installed and dismantled in a few minutes depending on The product's dimensions also allow for easy storage and transport, depending on the user's needs (traveling alone, with 1 child, 2 children, another person, transporting goods). A retractable version is also available.
[0004] - Economical: very few families can afford to buy a cargo bike in The price is a major factor, especially compared to an electric car. The device will be very affordable and compatible with most bicycles on the market.
[0005] - Ecological: access to city centers and low-emission zones will be Less and less possible by car. This invention encourages soft mobility for all daily journeys (going shopping, taking children to school, going to work...).
[0006] The device according to this invention makes it possible to encourage soft mobility by providing a simple, practical, economical and ecological solution for all daily journeys.
[0007] The device allows a conventional bicycle to be transformed into a cargo bike in a few minutes. It uses three attachment points: the seat tube, the luggage rack, and the front fork:
[0008] - the base is composed of two square tubes (dimensions: 1250mm x 25mm x 25mm) assembled together using three tubes which serve as spacers (dimensions: diameter 20mm x 140mm), three threaded rods and six blind nuts.
[0009] -fixation 1: the central spacer allows fixing on the seat tube thanks to a clamping ring compatible with the majority of seat tubes on the market [Fig.3].
[0010] - fixing 2: the rear spacer allows fixing to the luggage rack by means of a metal curved flat (dimension: 420mm x 20mm x 4mm) [Fig.4].
[0011] - attachment 3: The attachment to the bicycle frame at the front fork is consisting of a press system made up of two metal brackets with protective rubbers and four bolts to clamp the frame and ensure optimal tightening of the device on the bicycle [Fig.5].
[0012] This technical solution makes it possible to stiffen the bicycle frame and ensures an ideal weight distribution between the front wheel, the seat support and the rear wheel in order to to be able to transport several people and / or goods within the limits of the bicycle's maximum authorized total weight (PTAC). A front platform (dimensions: 250mm x 150mm x 15mm) and a rear platform (dimensions: 500mm x 150mm x 15mm) made of film-faced plywood complete the system, allowing for the easy attachment of numerous accessories via threaded inserts [Fig. 6]: seats, child seats, footrests, front rack, two-seater saddle, seat cushions, footrests, child safety barriers, lights, surfboard rack, panniers, top case, delivery box, etc.
[0013] The attached drawings illustrate the invention:
[0014] - Figures 1 and 2 represent the complete device of the invention from two angles different.
[0015] - Fig. 3 represents the fixing system on the seat tube.
[0016] - Fig. 4 represents the fastening system on the luggage rack.
[0017] - Figure [5] shows the mounting system on the frame at the fork Before.
[0018] - Fig. 6 represents the front and rear loading platforms.
[0019] With reference to these drawings, the device comprises:
[0020] - Base: two square tubes (dimensions: 1250mm x 25mm x 25mm) (1) assembled between them by means of three tubes which serve as spacers (dimensions: diameter 20mm x 140mm) (2), three threaded rods and six blind nuts.
[0021] - Fixing 1: the central spacer allows fixing to the seat tube by means of a clamping ring (3) compatible with the majority of seat tubes on the market.
[0022] - Fixing 2: the rear spacer allows fixing to the luggage rack by means of a metal curved plate (dimension: 420mm x 20mm x 4mm) (4).
[0023] - Attachment 3: The attachment to the bicycle frame at the front fork is consisting of a press system made up of two metal brackets with protective rubbers (5) and four bolts to clamp the frame and ensure optimal tightening of the device on the bike.
[0024] - Platforms: a front platform (dimensions: 250mm x 150mm x 15mm) (6) and a rear platform (dimensions: 500mm x 150mm x 15mm) (7) made of film-faced plywood completes the device in order to be able to easily attach many accessories thanks to threaded inserts.
[0025] The device according to the invention is particularly intended to encourage cycling for daily journeys.
Claims
Demands
1. A device for converting a conventional bicycle into a cargo bike in minutes, characterized by the use of three attachment points: the seat tube, the luggage rack, and the front fork. This technical solution stiffens the bicycle frame and ensures optimal weight distribution between the front wheel, the seat support, and the rear wheel, enabling the transport of several people, goods, and the attachment of numerous accessories (1)(2)(3)(4)(5)(6)(7): seats, child seats, toe clips, front luggage rack, two-seater saddle, seat cushions, footrests, child safety barriers, lights, surfboard rack, panniers, top case, and delivery box.
2. The device according to claim 1, characterized in that it consists of two tubes (1) joined together by means of three tubes which serve as spacers (2), three threaded rods and six cap nuts. A front platform (6) and a rear platform (7) complete the device.
3. Device according to claims 1 and 2 characterized in that it consists of a spacer with a clamping ring allowing attachment to the seat tube (3).
4. Device according to claims 1 and 2 characterized in that it consists of a bent flat iron allowing attachment to the luggage rack (4).
5. Device according to claims 1 and 2 characterized in that it consists of a press system composed of two metal brackets with protective rubbers (5) and four clamping bolts to clamp the frame at the fork and ensure optimal clamping of the device on the bicycle.
6. Device according to claims 1 and 2 characterized in that it consists of numerous fixing points with clamping bolts and threaded inserts in order to fix all the accessories on the front and rear platforms.