JPS62196794U

JPS62196794U -

Info

Publication number: JPS62196794U
Application number: JP8581186U
Authority: JP
Priority date: 1986-06-04
Filing date: 1986-06-04
Publication date: 1987-12-14

Description

[Brief explanation of the drawing]

図面は本考案のペダル装置を示すもので、第１
図は全体縦断正面図、第２図は第１図の側面図で
ある。Ａはハンガラツグ部、１はクランク軸、２はク
ランク、２ａはクランクの装着基部、２ｂはベア
リング、３は大ギヤ、３ａはベアリング、４はク
ランク用ガイド板、４ａは偏心円形凹陥部。 The drawing shows the pedal device of the present invention.
The figure is an overall longitudinal sectional front view, and FIG. 2 is a side view of FIG. 1. A is a hanger plug, 1 is a crankshaft, 2 is a crank, 2a is a mounting base of the crank, 2b is a bearing, 3 is a large gear, 3a is a bearing, 4 is a guide plate for the crank, and 4a is an eccentric circular recess.

Claims

[Scope of utility model registration request]

In a pedal device consisting of a hanger accessory and a gear crank mounted on a hanger lug of a bicycle frame, the crankshaft to be inserted into the hanger lug is a non-rotating crankshaft that is fixed in a non-rotatable manner, and the right side shaft of the crankshaft is fixed. The large gear to be fitted is rotatably fitted via a bearing, and furthermore, a disk body with a smaller diameter than the large gear is formed on both the left and right shafts, and one side of the large gear is formed with a disk body having a diameter smaller than that of the large gear. A crank guide plate having a circular concave part eccentric by a required dimension on the advancing side with respect to the axis of the crankshaft is keyed and fixed, and one end thereof is secured to the left and right ends of the crankshaft, respectively. The crank to be engaged with is formed by bending so that its engagement base can be positioned within the circular recess along its diameter length, and a bearing whose engagement hole is fitted into the shaft of the crankshaft. The large gear has an elongated hole that is loosely fitted to the shaft, and rotational abutment bearings are rotatably installed at the front and rear ends of the engagement base, respectively, and a side surface of the large gear is provided with a shaft for transmitting the rotational force of the crank. When each crank is depressed in the forward direction by a pedal provided at its end, each crank is guided by the eccentric circular recess of the crank guide plate and moves forward. A pedal device for a bicycle, characterized in that the pedal device is configured to be extruded to a maximum length and protrude from a crankshaft to a maximum length.