Reset spring fixing device for cam phaser
A cam phaser and return spring technology, which is applied to valve devices, machines/engines, engine components, etc., can solve the problem of unreliable fixing of the return spring, and achieve the effects of reliable spring fixing, simple device structure and reliable connection.
Inactive Publication Date: 2012-10-03
MIANYANG FULIN PRECISION MACHINING
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Problems solved by technology
[0003] The purpose of this invention is to solve the technical problem of unreliable fixing of the return spring of the existing cam phaser, and to provide a return spring fixing device for the cam phaser, which has a simple structure , the fixed return spring is more reliable, it can not only limit the return spring in the axial direction, but also ensure the fixation with the rotor, effectively ensure the response speed of the phaser, control stability and realize the shutdown reset
Method used
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[0029] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.
[0030] preferred embodiment
[0031] A return spring fixing device for a cam phaser, such as Figure 1-Figure 3 As shown, including the spring seat and the cover plate, the spring seat is a two-stage columnar structure with upper and lower through holes, such as Figure 5 and Figure 6 As shown, it includes an upper columnar structure with a larger diameter and a lower columnar structure with a smaller diameter. The connection between the upper columnar structure and the lower columnar structure forms a ring-shaped end face, which forms the gasket for the phaser mounting screw. The lower columnar structure The through hole in the middle of the structure is used for the mounting screw of the phaser, so that after the phaser is installed, the connection between the spring seat and the rotor is more reliable under the action of the pres...
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The invention discloses a reset spring fixing device for a cam phaser, which comprises a spring seat and a cover plate, wherein the spring seat is in a two-stage column-shaped structure which is communicated up and down, the diameter of the upper column-shaped structure is larger than that of the lower column-shaped structure, an annular end face is formed on the connecting position between the upper column-shaped structure and the lower column-shaped structure, the outer circle of the lower column-shaped structure is in interference fit with the inner hole of a rotor, the upper column-shaped structure passes through a hole arranged in the middle of the cover plate, a location pinhole is formed in the end face, a location pin arranged on the rotor passes through the location pinhole, a cylindrical location pin and a large-head pin are arranged on the cover plate, the inside end of the plane scroll reset spring is connected to a square hole formed in the outer circle of the upper column-shaped structure, and the outside end thereof is connected to the large-head pin after bypassing the cylindrical location pin. The fixing device has a simple structure, fixes the reset spring more reliably, not only can limit the reset spring in the axial direction, but also can ensure the fixation between the spring and the rotor, so that the response speed of the phaser can be effectively ensured, the stability is controlled and the shutdown reset is realized.
Description
technical field [0001] The invention relates to a spring fixing device, in particular to a fixing device used for limiting the return spring of a cam phaser. Background technique [0002] The variable valve timing system can increase engine power and torque, reduce fuel consumption and emissions by intelligently changing the timing of engine valve opening and closing. It is one of the new technologies for energy-saving and emission-reduction of modern automobiles. The cam phaser is an actuator for variable valve timing. A return spring is set on the phaser to improve the response speed of the phaser, control stability and realize shutdown reset. Contents of the invention [0003] The purpose of the present invention is to solve the technical problem of unreliable fixing of the return spring of the existing cam phaser, and to provide a return spring fixing device for the cam phaser. The spring is used to limit the position and ensure the fixation with the rotor, which eff...
Claims
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Login to View More IPC IPC(8): F01L1/344
CPCF01L1/3442F01L2001/34483
Inventor 谭建伟阳宇向明朗刘锐
Owner MIANYANG FULIN PRECISION MACHINING