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Pinion gear and starter with pinion gear

一种小齿轮、齿轮齿的技术，应用在起动器领域，能够解决齿相互碰撞、碰撞噪音等问题

Inactive Publication Date: 2020-07-21
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the pinion gear meshes with the ring gear, the teeth of these gears collide with each other and generate crashing noises, etc.

Method used

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  • Pinion gear and starter with pinion gear
  • Pinion gear and starter with pinion gear
  • Pinion gear and starter with pinion gear

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Experimental program
Comparison scheme
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Embodiment Construction

[0019] As discussed in International Patent Application No. 2010-136429 (WO2010 / 136429A)), the teeth of the pinion gear are divided into multiple pieces in the thickness direction of the pinion gear to suppress the impact noise when the starter performs crank starting. However, another kind of noise is generated. The present invention was made in view of such a problem, and an object thereof is to solve the problem.

[0020] Reference is now made to the drawings, in which the same reference numerals in several of its views denote the same or corresponding parts, and reference figure 1 With applicable drawings, according to the first embodiment of the present invention, a configuration in which a pinion gear is used in the starter to start the engine is described. Such as figure 1 As shown, the starter 10 is usually mounted on a vehicle to start an on-board engine (ie, internal combustion engine). The starter 10 includes a DC (direct current) motor 11 and a magnetic switch 12 ser...

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PUM

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Abstract

To suppress generation of noise during cranking, a pinion gear 20 is fixed to a drive shaft 13 of a starter 10 starting an internal combustion engine. The pinion gear rotates a ring gear 50 provided to the internal combustion engine by meshing therewith. The pinion gear 20 includes gear teeth 21 and an annular hollow portion 22 located radially inside of the gear teeth. The annular hollow portionaccommodates a vibration absorber 23 to absorb vibration generated in the gear teeth 21.

Description

Technical field [0001] The various embodiments of the present invention relate to a pinion gear for starting an internal combustion engine and a starter having a pinion gear. Background technique [0002] To start the internal combustion engine, the starter drives an electric motor that rotates a pinion gear that meshes with a ring gear attached to the internal combustion engine. However, when the pinion gears mesh with the ring gear, the teeth of these gears collide with each other and generate collision noise and the like. In order to suppress such noise, various existing technologies have been proposed. Summary of the invention [0003] Thus, one aspect of the present invention provides a novel pinion gear (20) fixed to the drive shaft (13) of a starter (10) for starting an internal combustion engine. The pinion gear meshes with a ring gear (50) provided in an internal combustion engine to rotate the ring gear (50). The pinion gear (20) includes gear teeth (21) arranged on i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N15/04
CPCF02N15/04F02N11/00F02N15/067F02N15/063F02N15/022F02N2015/061F02N15/065F02N15/046
Inventor 藤田达也
Owner DENSO CORP