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Valve timing control equipment

A technology for controlling equipment and valve timing, which is applied in mechanical equipment, valve devices, valve details, etc., and can solve the problems of reduced performance and durability of valve timing control equipment.

Active Publication Date: 2018-12-25
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, generation of friction and noise due to radially inward deformation of the inner tooth portion of the sun gear occurs, and thus there may be a reduction in performance and durability of the valve timing control device

Method used

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  • Valve timing control equipment

Examples

Experimental program
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Embodiment Construction

[0012] Embodiments of the present disclosure will be described with reference to the drawings. In the following discussion of the embodiments, similar components will be indicated by the same reference numerals and will not be described repeatedly for simplicity.

[0013] figure 1 A valve timing control device according to an embodiment of the present disclosure is shown. The valve timing control device 10 adjusts the valve timing of an intake valve (not shown) opened and closed by the camshaft 92 by rotating the camshaft 92 relative to the crankshaft 91 of the internal combustion engine 90 . The valve timing control device 10 is provided in a rotation transmission path extending from the crankshaft 91 to the camshaft 92 (ie, a rotation transmission path that transmits rotation from the crankshaft 91 to the camshaft 92 ). The crankshaft 91 serves as a drive shaft of the present disclosure. The camshaft 92 serves as a driven shaft of the present disclosure. An intake valve ...

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PUM

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Abstract

The invention discloses a valve timing control device, wherein bolts (35) are respectively inserted into through holes (29) of a sun gear (25) and are respectively helically inserted into threaded holes of a driving side rotatable body (20) (24). Bolts (35) are provided outside the first internal tooth portion (26) of the sun gear (25) in the radial direction, and fix the sun gear (25) and the driving side rotatable body (20) together. The sun gear (25) includes: press-fit parts (52), each press-fit part (52) is press-fit to the driving side at a corresponding position between corresponding adjacent two bolts (35) in the circumferential direction a corresponding one of the press-fit protruding parts (51) of the rotatable body (20); and opening parts (54), each of which is provided at a corresponding position overlapped with a corresponding one of the bolts (35) in the circumferential direction , while the corresponding predetermined space (53) is disposed adjacent to each opening portion (54) on the outside of the opening portion (54) in the radial direction.

Description

technical field [0001] The present disclosure relates to a valve timing control device. Background technique [0002] Heretofore, there is known a valve timing control apparatus that adjusts the valve timing of a valve opened and closed by the camshaft by rotating a driven side rotatable body relative to a driving side rotatable body, wherein the driving side The rotatable body rotates synchronously with the crankshaft, and the driven-side rotatable body rotates synchronously with the camshaft. JP 2009-185786 A discloses such a valve timing control device, which includes: a sun gear fixed to a drive-side rotatable body with bolts; and a planetary gear meshing with an internal tooth portion of the sun gear having internal teeth . The driven-side rotatable body is rotated relative to the driving-side rotatable body by the planetary motion of the planetary gear. In JP 2009-185786 A, the sun gear is press fit to the drive side rotatable body to limit misalignment of the sun g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/344
CPCF01L1/352F01L2250/02F01L2810/04F01L2303/00F01L1/34F16H1/32
Inventor 高桥广树
Owner DENSO CORP
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