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Power transmission device

A technology of power transmission device and driving force, applied in the direction of magnetic drive clutch, non-mechanical drive clutch, clutch, etc., can solve the problem of insufficient sound suppression.

Active Publication Date: 2020-01-17
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure described in Patent Document 1 has a structure in which the contact area between the rubber member and the inner plate is reduced, so that the sound generated due to the collision between the inner plate and the rotor cannot be sufficiently suppressed.

Method used

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no. 1 approach

[0037] The refrigeration cycle 1 functions as a device for adjusting the temperature of air blown into the vehicle interior in a vehicle air conditioner for air-conditioning the vehicle interior. The refrigeration cycle 1 is composed of a closed circuit, which is formed by connecting the compressor 2, the radiator 3, the expansion valve 4 and the evaporator 5 in a ring shape. The compressor 2 compresses and discharges the refrigerant, and the radiator 3 makes the The refrigerant discharged from the compressor 2 dissipates heat, the expansion valve 4 decompresses the refrigerant flowing out of the radiator 3 , and the evaporator 5 evaporates the refrigerant decompressed by the expansion valve 4 .

[0038] The rotational driving force output from the engine 6 is transmitted to the compressor 2 via the power transmission device 10 . In the present embodiment, the engine 6 constitutes a drive source that outputs a rotational drive force, and the compressor 2 constitutes a drive ta...

no. 2 approach

[0108] use Figure 14-Figure 15 A second embodiment will be described. Such as Figure 14 As shown, in the power transmission device of the present embodiment, a protrusion 183 c is formed on one surface side of the vibration damper 183 of the rubber member 18 . Such as Figure 15 As shown, the protrusion 183 c is inserted into the groove 141 formed in the armature 14 .

[0109] One surface of the protrusion 183 c is in contact with both the outer plate 142 on the outer peripheral side of the groove 141 and the inner plate 143 on the inner peripheral side of the groove 141 , and the other surface of the protrusion 183 c is in contact with the outer connecting portion 161 .

[0110] As described above, vibration damper 183 has protrusion 183 c protruding toward one side, and protrusion 183 c is inserted into groove 141 formed in armature 14 . Therefore, it is possible to reduce the operation noise when the outer panel 142 is connected to the outer hub 16 by fastening member...

no. 3 approach

[0112] use Figure 16 A third embodiment will be described. The damper portion 183 of the rubber member 18 of the present embodiment has a first region 1831 having a first thickness and a second region 1832 having a second thickness thicker than the first thickness. In addition, unevenness is formed on the surfaces of the first region 1831 and the second region 1832 that face the armature 14 .

[0113] In this way, the damper 183 can have a first region 1831 having a first thickness and a second region 1832 having a second thickness thicker than the first thickness.

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Abstract

A power transmission device comprises: an electromagnet; a rotor; an armature; and a hub (15) that connects the armature to a shaft of a device to be driven. A groove (141) is formed in the armature in the circumferential direction about an axis of rotation. The armature has an internal plate (143) positioned internally with respect to the groove, and an external plate (142) positioned externallywith respect to the groove. The hub is configured to include: an outer hub (16); an inner hub (17) that is connected to the shaft; and a first elastic member (181) that is provided between the inner hub and the outer hub, and causes an elastic force to act on the outer hub in a direction heading away from the rotor. The outer hub has an outer connection part (161) that is positioned opposite the external plate and the internal plate and is connected to the external plate. The hub comprises a second elastic member (183) that is interposed between the outer connection part, and the external plate and internal plate.

Description

[0001] This application is based on Japanese Patent Application No. 2017-146344 for which it applied on July 28, 2017, and the description content is incorporated in this application as a reference. technical field [0002] The invention relates to a power transmission device. Background technique [0003] As such a device, there is known an electromagnetic clutch including: an electromagnetic coil provided in a housing; a rotor rotatably supported by the housing; and an armature passing through the electromagnetic coil. The magnetic force at the time of energization attracts the rotor; the leaf spring member acts elastic force on the armature in a direction away from the rotor. [0004] In such an electromagnetic clutch, contact noise is generated when the armature is attracted to and contacts the rotor by energization of the electromagnetic coil. In addition, in such an electromagnetic clutch, since the armature is attracted to the rotor while rotating, a resonant sound h...

Claims

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Application Information

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IPC IPC(8): F16D27/112
CPCF16D27/112F16D27/14F16D2027/007
Inventor 小西俊宏樱场茂圭广濑贵之林敏弘橘和真永桥广树
Owner DENSO CORP
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