Unlock instant, AI-driven research and patent intelligence for your innovation.

Device for preventing foreign substance from winding in working engine

A technology of foreign substances and engines, which is applied in the direction of engine cooling, engine components, machines/engines, etc., and can solve problems such as entanglement of foreign substances

Inactive Publication Date: 2003-11-05
HONDA MOTOR CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above structure, when the foreign matter is once wound on the outer edge of the cylindrical protective tube, the foreign matter gathers and finally enters the gap between the protective tube and the boss of the cooling fan, causing the foreign matter to wound on the crankshaft

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for preventing foreign substance from winding in working engine
  • Device for preventing foreign substance from winding in working engine
  • Device for preventing foreign substance from winding in working engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Now, the present invention will be described by way of preferred embodiments with reference to the accompanying drawings.

[0013] As shown in FIG. 1 , a work engine E is connected to a power trimmer T as a power source, for example. The power trimmer T cuts grass or the like by means of high-speed rotation of the cutting tool C by the engine E.

[0014] refer to figure 2 , The engine E is a 4-cycle engine, including an engine main body 1, which includes a crankcase 2, a cylinder block and a cylinder head 4. An oil tank 11 is integrally connected to one side wall of the crankcase 2 .

[0015] A crankshaft 5 accommodated in a crankcase 2 is connected to a piston 6 that can be raised and lowered in a cylinder bore of the cylinder block 3 through a connecting rod 7 . The crankshaft 5 is mounted on laterally opposite side walls of the crankcase 2 with ball bearings 8 and 9 disposed therebetween. like figure 2 The left ball bearing 8 is shown with a seal, and an oil sea...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A working engine includes: a bearing mounted on the outer wall of the crankcase to carry the crankshaft; an oil seal mounted on the outer wall of the crankcase and positioned outside and adjacent to the bearing; and a cooling fan connected to the crankshaft adjacent to the oil seal On the outer end, its blades are turned towards the crankcase, the cooling fan has blades protruding towards the crankcase. In this working engine, a cylindrical protective tube is formed on the outer side wall of the crankcase to cover the boss end of the cooling fan, and a foreign matter flap is formed on the cooling fan 16 near the outer peripheral surface of the protective tube. Therefore, even if the long foreign matter sucked by the cooling fan is wound on the crankshaft such as grass, the foreign matter flapping piece rotating together with the cooling fan can beat, loosen or cut it. It is thus possible to prevent foreign substances from being entangled on the crankshaft, thus avoiding damage to the oil seal due to entanglement.

Description

technical field [0001] The present invention relates to a working engine, which is mainly used as a power source for a trimmer or other portable working machines. In particular, the present invention relates to a device installed in a working engine to prevent foreign matter from being entangled, the engine comprising: a bearing, It is installed on the outer wall of the crankcase to carry the crankshaft; an oil seal, which is installed on the outer wall of the crankcase, and is arranged on the outer side of the bearing and adjacent to the bearing, in close contact with the outer peripheral surface of the crankshaft; and a cooling fan, which is connected to On the outer end of the crankshaft adjacent to the oil seal, the blades of which are directed toward the crankcase, the foreign matter entanglement prevention device is adapted to prevent the inhalation of foreign matter such as grass, etc., by means of a cooling fan, and prevents foreign matter such as grass, etc. Damage to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01P5/04A01D34/68F01P1/02F01P5/02F01P5/06F01P11/12F01P11/14F02B63/02F02B75/02F04D17/16F04D29/28
CPCF01P1/02F01P5/02F01P11/12F02B63/02F02B2075/027A01D34/68
Inventor 伊藤庆太西田隆夫前田健东健次
Owner HONDA MOTOR CO LTD