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Guard for securing the torsion spring at the front end of the camshaft phaser

A phase adjuster and camshaft technology, which is applied in the direction of machines/engines, valve devices, mechanical equipment, etc., can solve the problems of difficult installation of torsion springs and loose torsion springs, so as to simplify the assembly process and increase the riveting strength of rivets , the effect of reducing leakage

Active Publication Date: 2022-05-20
JIANGSU PACIFIC PRECISION FORGING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a shield for fixing the torsion spring at the front end of the camshaft phase adjuster which solves the difficulty in installing the torsion spring and the risk of the torsion spring being loose during installation and transportation

Method used

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  • Guard for securing the torsion spring at the front end of the camshaft phaser
  • Guard for securing the torsion spring at the front end of the camshaft phaser
  • Guard for securing the torsion spring at the front end of the camshaft phaser

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Embodiment 1)

[0022] See Figure 1 to Figure 4 , the present invention has a shroud 2 that is riveted with the cover plate 9 of the phaser 10 by pressing the tail of the rivet 1; The center of the cover 2 is provided with an avoidance hole 5 for easy assembly and disassembly of the central bolt; a torsion spring fixing port 6 is provided on the side wall of the torsion spring cover 3, and the torsion spring 11 is placed in the inner cavity of the torsion spring cover 3; The annular array on the outer ring 4 has four avoidance grooves 12 that facilitate the full threaded contact between the mounting screw 7 and the cover plate 9 and increase the tightening force of the mounting screw 7 and four concentric with the rivet holes 13 on the cover plate 9 of the phaser 10 And one-to-one correspondence with the rivet holes 14 of the shield, the opening of the rivet hole 14 of the shield has a chamfer, which increases the riveting pressure of the rivet 1 and the riveting strength of the rivet 1, use...

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Abstract

The invention relates to a shield for fixing the torsion spring at the front end of a camshaft phase adjuster, which has a shield which is pressed by stacking the tail of the rivet and riveted with the cover plate of the phaser; The clad outer ring is integrally formed in a "convex" shape, and the center of the shield is provided with an avoidance hole for easy assembly and disassembly of the central bolt; the torsion spring cover is provided with a torsion spring fixing port; the clad outer ring has a ring array There are four avoidance grooves which facilitate full threaded contact between the mounting screw and the cover plate and increase the screw tightening force, and four shield rivet holes which are concentric with the rivet holes on the cover plate of the phaser and correspond one-to-one. The present invention not only solves the problem of poor fit between the central bolt and the phaser and large leakage, but also solves the problem of difficulty in installing the torsion spring and the risk of loosening during installation and transportation of the torsion spring. At the same time, the cylindrical torsion spring The structure reduces the centrifugal force of the torsion spring and improves the service life and safety performance of the torsion spring.

Description

technical field [0001] The invention relates to a variable valve timing system, in particular to a shield for fixing the torsion spring at the front end of a camshaft phase adjuster. Background technique [0002] The variable valve timing system is widely used in new gasoline and diesel automobile engines. It can increase engine power and torque, and reduce fuel consumption and exhaust emissions. The camshaft phase adjuster is an important executive component in the variable valve timing system. According to the control signal sent by the engine ECU control system, the oil control valve switches the oil channel leading to the camshaft phaser to control the camshaft phaser. The angle of rotation, so as to achieve the purpose of precise control of valve timing. In order to improve the response speed of the phaser, increase the driving torque, and realize the low oil pressure quick reset of the exhaust phaser, the usual practice is to add a torsion spring at the front end of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/46
CPCF01L1/46
Inventor 王国华周涛狄雷夏汉关
Owner JIANGSU PACIFIC PRECISION FORGING
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