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Drive force transmission apparatus

A technology of driving force and equipment, applied in the direction of mechanical equipment, engine components, engine control, etc., can solve the problems such as the reduction of the life of the output gear 17

Active Publication Date: 2015-07-22
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When excessive stress is generated, it will disadvantageously cause the fracture of the output gear teeth of the output gear 17 or the reduction of the life of the output gear 17

Method used

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  • Drive force transmission apparatus
  • Drive force transmission apparatus
  • Drive force transmission apparatus

Examples

Experimental program
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Effect test

no. 1 example

[0047] Figure 1-10B A gear shaft coupling unit is shown in which the driving force transmission device according to the first embodiment of the present invention is applied. In the first embodiment described below, the same components as those of the first and second prior art of FIG. 13 described above will be denoted by the same reference numerals as in FIG. 13 for convenience.

[0048] The actuator of the present embodiment is a functional part received in a housing fixed to a support portion 2 of the intake manifold 1, which is a fixed member of an internal combustion engine driving a vehicle such as an automobile.

[0049] The electric actuator includes an electric motor (hereinafter simply referred to as a motor) M, a reduction mechanism, and a gear coupling unit (hereinafter simply referred to as a coupling unit). The motor M generates a rotational driving force (torque), which drives the tumble control valve (in particular, the tumble valve 3 and the valve shaft 4 of...

no. 2 example

[0189] Figure 11 A coupling unit applied to a driving force transmission device according to a second embodiment of the present invention is shown.

[0190] The second embodiment is an improvement on the first embodiment. In the following description, components similar to those of the first embodiment are shown with the same reference numerals and will not be described repeatedly for brevity.

[0191] The coupling unit of this embodiment includes an output gear 6 , a coupler 7 and a rubber buffer 8 . The output gear 6 is made of synthetic resin and meshes with the pinion 16 of the reduction mechanism so that the output gear 6 is rotated by the pinion 16 . The coupler 7 is made of synthetic resin similarly to the coupler 7 of the first embodiment and is coupled to the output gear 6 so as to integrally rotate with the output gear 6 . The rubber buffer 8 is held in the buffer accommodation chamber 49 formed between the first reverse portion 51 of the output gear 6 and the se...

no. 3 example

[0201] Figure 12 A coupling unit applied to a driving force transmission device according to a third embodiment of the present invention is shown.

[0202] The third embodiment is an improvement on the first embodiment. In the following description, components similar to those of the first and second embodiments are shown with the same reference numerals and will not be described repeatedly for brevity.

[0203] The third embodiment is similar to the first embodiment except for the configuration of the elastic protrusion 91 of the coupler 7 . According to the third embodiment, similar to the first embodiment, the coupler 7 of the present embodiment includes a second rotatable shaft portion 61 configured in the form of a hollow cylindrical tube and on the second opposite side of the coupler 7 . At the center of the portion 52 protrudes toward the distal end side (the other end side opposite to the one end side) in the rotation axis direction of the coupler 7 . The elastic p...

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PUM

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Abstract

A coupling unit includes an output gear, a coupling and a rubber cushion. A second rotatable shaft portion of the coupling includes a resilient projection that projects outwardly in a radial direction from an outer peripheral surface of the second rotatable shaft portion. The resilient projection is resiliently inwardly deformed in the radial direction during movement of the resilient projection along a deep side of a recessed groove of a through-hole formed in a first rotatable shaft portion of the output gear at a time of fitting the second rotatable shaft portion into the through-hole. When the resilient projection projects from the through-hole, the resilient projection is resiliently outwardly restored and is engaged to an engaging portion of the first rotatable shaft portion to limit removal of the second rotatable shaft portion from the through-hole.

Description

technical field [0001] The present invention relates to a driving force transmission device that transmits a driving force of a motor to a shaft of a driven object. Background technique [0002] A known intake system includes an intake control valve (hereinafter referred to as a tumble control valve) and an actuator to control intake air supplied to an internal combustion engine having a plurality of cylinders. The tumble control valve generates an intake swirl flow (tumble flow) that flows around an axis perpendicular to the cylinder axis in the combustion chamber of each cylinder, so that the combustion efficiency in the combustion chamber is improved to improve fuel consumption and exhaust gas of the engine Emissions (e.g. improved HC reduction). The actuator drives a tumble valve serving as a valve element of the tumble control valve. [0003] As shown in Fig. 13, the tumble control valve includes an intake manifold 1, a plurality of tumble valves 3, a valve shaft 4 an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D3/68
CPCF16H57/02004F16F15/126F02D11/10F02B31/06F16K31/041F02D2009/0261F16H55/14F16D3/68F02D9/1065F16K31/535F16K1/221Y10T74/19633Y02T10/12
Inventor 竹田哲马
Owner DENSO CORP