Bicycle with bevel gear drive for children

• US 6,446,995 B1
• Filed: 02/24/2000
• Issued: 09/10/2002
• Est. Priority Date: 06/04/1999
• Status: Expired due to Fees

• Current Assignee: Shanghai Baoqi Bicycle Company Limited
• Original Assignee: Shanghai Baoqi Bicycle Company Limited
• Inventors: Xu, Cai-xi, Zhu, Jia-kuan
• Primary Examiner(s): LERNER, AVRAHAM H
• Application Number:
  US09/513,278
• Time in Patent Office: 929 Days
• Field of Search: 280/259, 280/260, 280/210, 744/16, 744/17
• US Class Current: 280/260
• CPC Class Codes: B62K 9/00 Children's cycles toy vehicles A63H17/00
• CPC Class Codes: B62M 11/06 with spur gear wheels B62M11/14 takes precedence
• CPC Class Codes: B62M 11/10 with bevel gear wheels B62M11/14 takes precedence
• CPC Class Codes: B62M 17/00 Transmissions characterised by use of rotary shaft, e.g. cardan shaft
• CPC Class Codes: Y10T 74/19665 Bevel gear type

Abstract

A children'"'"'s bicycle with a bevel gear driving device that includes a pedal intermediate axle, characterized in that the pedal intermediate axle is connected with a drive bevel gear, which drives a connecting rod having bevel gears on both ends thereof, that the bevel gear on the other end of the connecting rod drives the rear wheel bevel gear, and that protecting hoods are provided over the driving bevel gear, the connecting rod with bevel gears, and the rear wheel bevel gear. The driving device avoids the problem of chain falling-off and allows safer use.

Claims

1. A bicycle with a bevel gear driving device for children, comprising a bicycle body, a wheel, a handlebar, a driving device, a braking device, including:

a pedal intermediate axle of the driving device being connected with a drive bevel gear, the drive bevel gear meshes with a bevel gear of an intermediate axle portion of a drive axle, a bevel gear of a rear axle portion of the drive axle meshes with a bevel gear on a rear wheel axle, an outside of a meshing portion of each bevel gear is provided with a hood, each bevel gear is made of high-strength nylon, the drive bevel gear is provided outside the pedal intermediate axle, and the rear wheel axle has a foot braking device; and

an insert made of rigid material is provided inside the bevel gear on said rear wheel axle, positioning protrusions are provided on the insert, concave slots corresponding to those positioning protrusions are provided on the rear wheel axle nave, and a boss-shaped portion is formed between the insert and bevel gear inner wall.

2. The children'"'"'s bicycle according to claim 1, wherein an outside of said insert is fixed by a spring ring and screw thread.