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Crankshaft structure for model engine

a crankshaft and engine technology, applied in the direction of crankshafts, machines/engines, combustion air/fuel air treatment, etc., can solve the problem of decrementing output power, and achieve the effect of smooth motor output and facilitate air inpu

Inactive Publication Date: 2015-02-26
LIU NAI WEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]The primary object of the present invention is to provide a crankshaft structure for a model engine in which a tilted guiding face of the counterweight block transforms the vertex into a push force so as to facilitate air input and motor output smoothly.

Problems solved by technology

However, when the crankshaft 8 rotates to push the mixed oil gas into the crank chamber 3, the piston chamber 2 generates a damp force, thus decreasing output power.

Method used

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  • Crankshaft structure for model engine
  • Crankshaft structure for model engine
  • Crankshaft structure for model engine

Examples

Experimental program
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Effect test

Embodiment Construction

[0014]With reference to FIGS. 1-2, a crankshaft structure for a model engine according to a preferred embodiment of the present invention comprises: a body 10 and at least one fin member 20.

[0015]The body 10 is formed in an elongated shaft shape and includes a cam disc 11 disposed on a distal end thereof and a connecting shaft 12 extending outwardly from an end surface of the cam disc 11, a window 13 defined on a middle section thereof, and a channel 14 formed therein and passing through the end surface of the cam disc 11 so as to inhale and exhaust mixed oil gas.

[0016]The at least one fin member 20 is mounted at a position of the channel 14 where corresponds to the window 13 and includes a front fringe 201 extending obliquely upward and a rear fringe 202 extending vertically downwardly from the front fringe 201, such that a vortex produces to refine oil molecules after the mixed oil gas is rotated by the body 10 (as shown in FIG. 4). Also, the at least one fin member 20 includes a ...

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Abstract

A crankshaft structure for a model engine contains a body and at least one fin member. The body is formed in an elongated shaft shape and includes a cam disc disposed on a distal end thereof and a connecting shaft extending outwardly from an end surface of the cam disc, a window defined on a middle section thereof, and a channel formed therein and passing through the end surface of the cam disc so as to inhale and exhaust mixed oil gas. The at least one fin member is mounted at a position of the channel where corresponds to the window.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a crankshaft structure for a model engine in which a tilted guiding face of the counterweight block transforms the vertex into a push force so as to facilitate air input and motor output smoothly.BACKGROUND OF THE INVENTION[0002]Referring to FIGS. 5 and 6, a conventional model engine 1 contains a piston chamber 2, a crank chamber 3, an inlet 4, and an exhaust port 5. The piston chamber 2 has a piston 6 and a connecting shaft 7. The crank chamber 3 has a crankshaft 8, and the crankshaft 8 has a cam disc 8a with a shank 8b so as to drive the connecting shaft 7 to rotate. The crankshaft 8 has a window 8c defined on a middle section thereof and a channel 8d defined therein and passing an end surface of the cam disc 8a. Thereby, when the model engine operates, mixed oil gas flows into the crank chamber 3 from the inlet 4 via the window 8c and the channel 8d so that the piston 6 and the crankshaft 8 are driven to operate by the ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F02B75/34
CPCF02B75/34F01L5/20F02B33/04F02F7/0036F02M35/10262F16C3/08Y02T10/12
Inventor LIU, NAI WEN,
Owner LIU NAI WEN