CN201321880Y

CN201321880Y - Variable camshaft phase regulator of engine

Info

Publication number: CN201321880Y
Application number: CNU2008202229443U
Authority: CN
Inventors: 罗兴树
Original assignee: Mianyang Xinchen Power Machinery Co Ltd
Current assignee: Mianyang Xinchen Power Machinery Co Ltd
Priority date: 2008-11-26
Filing date: 2008-11-26
Publication date: 2009-10-07
Anticipated expiration: 2018-11-26

Abstract

The utility model relates to a variable camshaft phase regulator of an engine, which comprises a stator, a rotor and a return spring. The rotor is arranged on the stator, and the return spring is arranged between the rotor and the stator. The variable camshaft phase regulator is characterized in that the return spring consists of two return springs which are a alternately arranged in parallel; one end of the two return springs are connected with the rotor; and the other ends of the two return springs are connected with the stator. The utility model can eliminate the bending moment generated in the operation of the variable camshaft phase regulator, eliminate the axial friction between the rotor and the stator of the variable camshaft phase regulator, effectively enhances the reliability, prolongs the service life, and has high practicality.

Description

A kind of engine variable camshaft phase regulator

Technical field

The utility model belongs to the parts of internal-combustion engine, relates to a kind of engine variable camshaft phase regulator, is the improvement of prior art.

Background technique

Variable cam phase regulator (also claiming phase shifter, VCP) is the indispensable final controlling element that motor car engine realizes VVT (Variable Valve Time) function, its function is the order by ECU (electronic control unit), realizes that camshaft produces certain phase place change with respect to bent axle.Because there are resistance in camshaft and driving mechanism thereof when operation, need external torque (generally realizing) to help camshaft to realize return by return spring; In the prior art, take back the variable cam phase regulator of bit function, restriction under the pressure of installing space etc., the general outputting power source of a return spring of only adopting as external torque, for guaranteeing necessary return moment of torsion (being substantially equal to camshaft running resistance square), it is bigger that return spring need be done, like this, single return spring is when guaranteeing necessary return moment of torsion, also produced a bigger moment of flexure in variable cam phase regulator inside, make between phase shifter stator and rotor heavy wear takes place, make that the gap becomes big between rotor and the stator, cause the phase shifter disabler, shorten working life.

Summary of the invention

The purpose of this utility model is intended to overcome above-mentioned deficiency of the prior art, by adopting alternately 2 return springs of parallel arranged, thereby provide a kind of moment of flexure of eliminating the generation in service of variable cam phase regulator, reduce the friction between variable cam phase regulator rotor and the stator, the engine variable camshaft phase regulator that effectively improve its reliability, increases the service life.

Content of the present utility model is: a kind of engine variable camshaft phase regulator, comprise: stator, be assemblied in the rotor on the stator, be arranged on the return spring between rotor and the stator, it is characterized in that: described return spring is by alternately the return spring (3) and the return spring (4) of parallel arranged are formed; The A end of return spring (3) and the C end of return spring (4) are connected with described rotor (1), and the B end of return spring (3) and the D end of return spring (4) are connected with described stator (2).

In the content of the present utility model: the A end of described return spring (3) and the C end of return spring (4) are preferably both and are connected with described rotor (1) symmetrically, and the B end of described return spring (3) and the D end of return spring (4) are preferably both and are connected with described stator (2) symmetrically.

Compared with prior art, the utlity model has following characteristics and beneficial effect:

(1) the utility model adopts two alternately return springs of parallel arranged, during work, two return springs produce torsional moment and moment of flexure to rotor simultaneously, the torsional moment of two spring generations is in the same way, and addition increases the torsional moment value, and torsional moment is to need to use, and the moment of flexure of two spring generations is reverse, just in time offset, making does not have pressure, can not produce axial rub between rotor and the stator, thus increase the variable cam phase regulator working life, improve its reliability;

(2) simple in structure, cost is low, produces easy to install, practical.

Description of drawings

Fig. 1 is main TV structure schematic representation of the utility model embodiment 1;

Fig. 2 is the A-A sectional structure schematic representation of Fig. 1;

Fig. 3 is the local structure for amplifying schematic representation of I part among Fig. 2;

Fig. 4 is the main TV structure schematic representation that return spring is arranged among the utility model embodiment 1;

Fig. 5 is the perspective view of return spring among the utility model embodiment 1;

Fig. 6 is main TV structure schematic representation of the utility model embodiment 2.

Among the figure: 1-rotor, 2-stator, 3-return spring, 4-return spring.

Embodiment

The utility model is described in further detail by embodiment below in conjunction with accompanying drawing.

Embodiment 1: referring to accompanying drawing 1-5.

A kind of engine variable camshaft phase regulator comprises: stator 2, be assemblied in the rotor 1 on the stator 1, and be arranged between rotor 1 and the stator 2, the alternately return spring 3 and the return spring 4 of parallel arranged; The A end of described return spring 3 holds both to be connected with described rotor 1 symmetrically with the C of return spring 4, and the B end of described return spring 3 holds both to be connected with described stator 2 symmetrically with the D of return spring 4.

During use, under external force, rotor 1 relative stator 2 turns an angle, and under the acting in conjunction of return spring 3 and return spring 4, rotor 1 is turned back to its initial position.

Adopt this embodiment, can eliminate the moment of flexure of variable cam phase regulator generation in service, eliminate the axial rub between variable cam phase regulator rotor 1 and the stator 2, effectively improve its reliability, increase the service life.

Embodiment 2: referring to accompanying drawing 6.

A kind of engine variable camshaft phase regulator, return spring 3 adopts with return spring 4 and replaces parallel arranged but asymmetrical mode, be that the A end of return spring 3 and the C end of return spring 4 are connected with rotor 1 but asymmetric, the B end of return spring 3 and the D end of return spring 4 are connected with described stator 2 but are asymmetric.During use, certain effect can be used and have to this mode, but can not eliminate the moment of flexure that produces by return spring (2) (3) fully, under the prerequisite of output same torque, its unbalanced force is F=T*SIN (α/2)/R, and wherein: F is a unbalanced force, and T is a torque value, R is the spring radius, and α is the uneven angle that return spring is arranged.Other is with embodiment 1, slightly.

The utility model is not limited to the foregoing description, and the utility model content is described all can implement and have described good result.

Claims

1, a kind of engine variable camshaft phase regulator, comprise: stator, be assemblied in the rotor on the stator, be arranged on the return spring between rotor and the stator, it is characterized in that: described return spring is by alternately the return spring (3) and the return spring (4) of parallel arranged are formed; The A end of return spring (3) and the C end of return spring (4) are connected with described rotor (1), and the B end of return spring (3) and the D end of return spring (4) are connected with described stator (2).

2, by the described engine variable camshaft phase of claim 1 regulator, it is characterized in that: the A end of described return spring (3) holds both to be connected with described rotor (1) symmetrically with the C of return spring (4), and the B end of described return spring (3) holds both to be connected with described stator (2) symmetrically with the D of return spring (4).