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Electromagnetic clutch

An electromagnetic clutch and electromagnetic force technology, which is applied in clutches, magnetic drive clutches, mechanical drive clutches, etc., can solve problems such as the increase of the maximum contact surface pressure of the coil shell

Inactive Publication Date: 2013-04-17
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the coil case shown in Japanese Patent Application Laid-Open No. 2004-17807 is opened toward the armature side like the coil case shown in Japanese Patent Laid-Open No. 2000-179583, the armature has its inner circumference and the coil When the opening periphery (edge) of the case is in contact and elastically deforms so that the outer periphery is separated from the coil case, the maximum contact surface pressure to the coil case increases due to stress concentration on the edge of the coil case

Method used

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Embodiment Construction

[0026] Hereinafter, the electromagnetic clutch according to the first embodiment of the present invention will be described in detail with reference to the drawings.

[0027] figure 1 Indicates a hybrid vehicle. like figure 1 As shown, the hybrid vehicle 100 includes an engine 101 , a first motor generator MG1 , a power split mechanism 102 , an output gear 104 , and a second motor generator MG2 . Both the engine 101 and the first motor generator MG1 are connected to the power split mechanism 102 . The output gear 104 outputs power to the driving wheel 103 . The second motor generator MG2 is connected to an output gear 104 via a reduction mechanism 105 . The power of the output gear 104 is transmitted to the left and right drive wheels 103 via the differential mechanism 106 .

[0028] The engine 101 is configured as a spark ignition type multi-cylinder internal combustion engine, and its power is transmitted to the power split mechanism 102 via an input shaft 107 . A damp...

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Abstract

An electromagnetic clutch (1) includes: a rotary member (2); an output mechanism (3) including an electromagnetic coil (30) and an armature (31) moved toward the electromagnetic coil by electromagnetic force; a cam mechanism (4) operated by rotation of the rotary member in the electromagnetic coil energized state; and a coil housing (5) having a coil accommodating portion (50) open toward the armature and accommodating the electromagnetic coil. The coil housing and the armature have frictional engagement faces (31b, 31c). The frictional engagement faces of the coil housing and the armature are frictionally-engageable. At least one of the coil housing and the armature has a contact pressure reducing portion for reducing contact pressures of the frictional engagement faces of the coil housing and the armature, based on cam thrust generated through an operation of the cam mechanism when the frictional engagement faces of the coil housing and the armature are frictionally-engaged.

Description

technical field [0001] The present invention relates to an electromagnetic clutch for controlling torque transmission between rotating parts or braking of the rotating parts. Background technique [0002] As a conventional electromagnetic clutch, there is a configuration including an output mechanism and a cam mechanism (for example, refer to JP-A-2004-17807). The above-mentioned output mechanism generates electromagnetic force and outputs moving force. The cam mechanism is driven by the electric motor to move on the axis of the output mechanism. [0003] The output mechanism has an electromagnetic coil and an armature. The above-mentioned electromagnetic coil generates electromagnetic force. The above-mentioned armature is moved by energizing the electromagnetic coil. The above-mentioned output mechanism is disposed on the outer periphery of the output shaft. [0004] The electromagnetic coil is accommodated in the coil case and fixed to the vehicle body side. [0005...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D27/14
CPCF16D27/112F16D2023/123
Inventor 鬼塚高晃斋藤晴彦北口钦悟
Owner JTEKT CORP