Box-type portable bicycle capable of being pushed and provided with four-connecting-rod foldable body

Abstract

Provided is a box-type portable bicycle capable of being pushed and provided with a four-connecting-rod foldable body. The box-type portable bicycle capable of being pushed and provided with the four-connecting-rod foldable body comprises the body, a front fork, a V-shaped foldable handlebar, a saddle, a front wheel, a rear wheel, a bicycle box and a driving mechanism. The body is the four-connecting-rod foldable body which is composed of a front tube fitting, an upper cant beam, a lower cant beam and a rear vertical beam. A bottom blade of a lower saddle tube is connected with the rear end of the upper cant beam in a rotating mode, is connected with the upper end of the rear vertical beam in a rotating mode, and can be connected with the upper cant beam in a locked mode, the front fork is connected with a circular tube hole of the front tube fitting in a rotating mode, the V-shaped foldable handlebar is installed in a front fork tube of the front fork, a left handlebar and a right handlebar of the V-shaped foldable handlebar can be connected with each other in a locked mode, a handle which can be used for lifting is arranged at the front end of the bicycle box, and a swivel hook and a fastener are connected with the rear portion of the bicycle box. After the body is folded, the swivel hook of the bicycle box hooks the fastener of the bicycle box, and the folded body can be limited in a box body. The driving mechanism comprises a center shaft, a secondary shaft, cranks, pedals, a preceding stage chain wheel, a preceding stage small chain wheel, a subsequent stage chain wheel, a flywheel, a preceding stage chain and a subsequent stage chain.

Description

Technical field: [0001] The invention relates to a folding bicycle, in particular to a four-link body folding box-type pushable portable bicycle that can be folded very small and fast, and the metal rods of the body can be hidden in the trunk after folding. technical background: [0002] The several models of portable bicycles that the applicant applied for earlier, although the folding is fast and the folding effect is good, they can be rolled out after being folded, and the metal poles of the body can be hidden in the trunk, so that the folded appearance is as beautiful as a box The neat portable bike hasn't existed yet. Invention content: [0003] The purpose of the present invention is to provide a four-linkage that can be folded very small and completely, can be folded quickly, and can be folded to hide the metal rods of the vehicle body in the trunk, and can be pushed after being folded. The folding box type of the body can promote the portable bicycle. The pur...

AI Technical Summary

Problems solved by technology

[0002] The applicant's previous application for several types of portable bicycles, although the folding is fast and the folding effect is good, but after folding, it can be rolled out and the metal pole of the body can be hidden In the carriage, there has never been a portable bicycle that looks as beautiful and tidy as a box after being folded.

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