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Pedal apparatus

A technology of pedals and friction devices, applied in mechanical control devices, devices for preventing/limiting/recovering parts movement of control mechanisms, instruments, etc., can solve problems such as changes in hysteresis characteristics

Inactive Publication Date: 2012-02-08
DENSO CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the structure, when the contact position of the friction washer with respect to the pedal rotor or spring rotor is changed due to physical changes of the friction washer due to long-term use (or aging) or temperature changes, hysteresis characteristics may change

Method used

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  • Pedal apparatus
  • Pedal apparatus
  • Pedal apparatus

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0033] will refer to Figures 1 to 7 A pedal device according to a first embodiment of the present invention will be described. In the present embodiment, the pedal device is formed as an accelerator pedal device which is mounted on a vehicle (such as an automobile) and controls the driving state of the vehicle in response to the depression amount of a pedal member of the pedal device which is driven by the vehicle. The member's feet are pressed down. The pedal unit is of the cable actuated type. A signal representing the rotation angle of the pedal member sensed by the rotation angle sensor is transmitted to an engine control unit (ECU), which in turn controls the throttle device based on the sensed rotation angle of the pedal member.

[0034] Such as Figures 1 to 3 As shown, the pedal device 1 includes a housing (as a support member) 10, a pedal member 20, a double-coil coil spring (as a pushing part or a pushing device) 50, a rotation angle sensor 60 and a friction wash...

no. 2 approach

[0097] will refer to Figures 8 to 11 A friction washer used in the pedal device according to the second embodiment of the present invention is described. In the following embodiments, members similar to those in the first embodiment will be denoted by the same reference numerals and will not be described again to avoid redundancy. In addition, since the rest of the components of the pedal device other than the friction washer are substantially the same as those of the first embodiment, as Figures 1 to 3 The remaining components shown will also be denoted by the same reference numerals.

[0098] The friction washer (as a friction part or friction device) 80 of the second embodiment is configured as a substantially flat arcuate disc and is placed between the side plate 14 of the housing 10 and the spring rotor 40, and the plane of the friction washer 80 is substantially perpendicular to the axis of rotation O. The friction washer 80 generates a frictional force by sliding c...

no. 3 approach

[0106] will refer to Figures 12 to 16 A friction washer for a pedal device according to a third embodiment of the present invention is described. This embodiment is a variant of the second embodiment, the friction washer (as a friction part or friction device) 90 of this embodiment is configured as a substantially flat arcuate disk and is placed on the spring rotor 40 and the side plate of the housing 10 Between 14, the plane of the friction washer 90 is substantially perpendicular to the axis O of rotation. The friction washer 90 applies a frictional force against the rotational movement of the pedal member 20 .

[0107] The friction washer 90 includes a fixing portion 94 , an elastically deformable portion 95 , a slidable contact portion 92 and an engaging portion 93 , and is integrally molded, that is, integrally formed in one piece from a resin material. For descriptive purposes, Figure 12 The dotted line 86 in schematically represents the boundary between the fixed p...

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PUM

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Abstract

A friction washer (70, 80, 90) is placed between a housing (10) and a pedal member (20) and exerts a frictional force against rotational movement of the pedal member (20). The friction washer (70, 80, 90) includes at least one displaceable portion (72, 75, 82, 85, 92, 95), which is adapted to be displaced relative to the rest of the friction washer (70, 80, 90) by a predetermined amount in a circumferential direction about a rotational axis (O) of the pedal member (20) upon rotation of the pedal member (20).

Description

[0001] Cross References to Related Applications [0002] This application is based on Japanese Patent Application No. 2009-57742 filed on March 11, 2009, which is incorporated herein by reference. technical field [0003] The invention relates to a pedal device for a vehicle. Background technique [0004] For example, in a known accelerator pedal device mounted to a vehicle, a pedal member is rotated in a depression direction by a pedaling force, which is a force applied from a driver's (user's) foot against the pedal member. When the pedaling force applied against the pedal member is released, the pedal member is rotated in the release direction opposite to the depressing direction by the elastic force of the spring that pushes the pedal member in the release direction. The rotation angle of the pedal member is sensed by a rotation angle sensor, and a signal representing the sensed rotation angle is sent from the sensor to an engine control unit (ECU) of the internal comb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05G5/03G05G1/30
CPCG05G1/38G05G5/03Y10T74/20534
Inventor 堀田启介铃木治彦渡部秀和根布谷秀人寺门利一前原一隆樱庭智裕
Owner DENSO CORP