VVT phase actuator

Abstract

The utility model relates to a VVT phase actuator which comprises a stator, a rotor, a driving wheel and a cover plate, the stator is a circular ring body, a plurality of separation cavities are annularly arranged on the inner circumferential wall of the stator, the rotor comprises a cylinder part and a wheel shaft part arranged at one end of the cylinder part, a plurality of blades are arranged on the outer circumferential wall of the cylinder part, and the blades are rotationally arranged in the different separation cavities in a one-to-one correspondence mode. The driving wheel and the cover plate are arranged at the two ends of the stator respectively, the outer wall of the cylindrical part is divided into a plurality of oil cavities through the blades, and the two ends of each oil cavity in the circumferential direction are connected with an L-shaped oil hole and a linear oil groove respectively. All the L-shaped oil holes are formed in the rotor, oil inlets are formed in the outer end face of the axle part, oil outlets are formed in the outer side wall of the cylindrical part and communicate with the corresponding oil cavities, all the linear oil grooves are radially formed in the end face, away from the axle part, of the cylindrical part, the inner ends of the linear oil grooves communicate with the first center through hole of the cylindrical part, and the outer ends of the linear oil grooves communicate with the corresponding oil cavities. According to the utility model, the processing difficulty of products is reduced.

Description

Technical Field

[0001] The utility model relates to a structural improvement of a VVT phase actuator. Background Art

[0002] The phase controller is an important component in VVT (variable valve timing device). Its function is to collect the position signal of the camshaft and input it into the ECU so that the ECU can perform sequential injection control, ignition timing control and explosion control. The phase controller generally includes a stator, a rotor arranged inside the stator, a cover plate and a drive wheel arranged at both ends of the stator and fixedly connected to the stator as a whole, and a signal disk fixed on the rotor. The inner peripheral wall of the stator is provided with a plurality of compartments separated by bosses, and the outer peripheral wall of the rotor is provided with a plurality of blades that rotate in different oil chambers in a one-to-one correspondence. An oil chamber is formed between two adjacent blades. Both ends of each oil chamber are provided with inlet and outlet oil channels for introducing high-pressure oil to drive the blades to move forward and reversely within the compartment range, and then drive the rotor to rotate forward and reversely. The existing phase controller either processes all the inlet and outlet oil channels inside the rotor, or processes the inlet and outlet oil channels used to drive the rotor to rotate forward and reversely on the rotor and the cover plate, or processes them on the rotor or the drive wheel. No matter which of the above schemes is adopted, it is not conducive to reducing the processing difficulty of related components. Utility Model Content

[0003] The utility model aims to improve the above-mentioned defects of the existing phase actuator.

[0004] The utility model adopts the following technical solutions:

[0005] A VVT phase actuator comprises a stator, a rotor, a driving wheel and a cover plate. The stator is a toroidal body and its inner peripheral wall is provided with a plurality of compartments. The rotor comprises a cylindrical part and a wheel shaft part provided at one end face of the cylindrical part. A first central through hole is provided in the cylindrical part, and a second central through hole directly connected to the first central through hole is provided in the wheel shaft part. The cylindrical part is rotatably arranged at the center of the stator, and one end of the wheel shaft part is exposed outside the stator. A plurality of blades are provided on the outer peripheral wall of the cylindrical part. The plurality of blades are rotatably arranged in different compartments one by one. The driving wheel and the cover plate are respectively arranged at the two ends of the stator and are locked and fixed to the stator as a whole, so as to respectively seal the cylindrical part of the rotor inside the stator from the corresponding two sides. The driving wheel is arranged at one end of the stator close to the wheel shaft part and is movably sleeved through its wheel center hole. In the wheel shaft part, a number of blades separate a number of oil chambers on the outer wall of the cylindrical part, and each of the two circumferential ends of the oil chamber is respectively connected with an L-shaped oil hole and a linear oil groove for introducing high-pressure oil to drive the rotor to rotate back and forth within the compartment; all L-shaped oil holes are arranged inside the rotor, and the oil inlet section is axially arranged and the oil outlet section is radially arranged. The oil inlets of all L-shaped oil holes are evenly arranged on the outer end face of the wheel shaft part outside the second center through hole, and the oil outlets are arranged on the outer side wall of the cylindrical part and connected to the corresponding oil chambers; all linear oil grooves are radially arranged on the end face of the cylindrical part away from the wheel shaft part and are evenly arranged on the periphery of the first center through hole. The inner ends of all linear oil grooves are connected to the first center through hole, and the outer ends are connected to the corresponding oil chambers.

[0006] As a preferred solution, an annular sealing groove is further provided on the end surface of the cylindrical portion away from the wheel shaft portion. The annular sealing groove is arranged concentrically with the first central through hole and is connected to all the linear oil grooves.

[0007] As a preferred solution, all the linear oil grooves have the same depth, and the depth of the annular sealing groove is smaller than the depth of the linear oil groove.

[0008] As a preferred solution, an oil-isolating retaining ring is embedded in the annular sealing groove.

[0009] As a preferred solution, the outer peripheral wall of the oil-isolating retaining ring is integrally formed with a plurality of protrusions, and the plurality of protrusions are respectively engaged in different linear oil grooves in a one-to-one correspondence.

[0010] As a preferred solution, the cover plate is located at the other end of the stator away from the wheel shaft portion and is pressed against the outer circumference of the oil-isolating retaining ring and a plurality of protrusions.

[0011] As a preferred solution, a third central through hole is provided on the plate surface of the cover plate, and the third central through hole is arranged concentrically with the first central through hole and has a larger aperture than the first central through hole.

[0012] As a preferred solution, a fixing ring is provided in the third central through hole, the inner end of the fixing ring is pressed against the inner circumference of the oil-isolating retaining ring and is fixedly connected to the rotor by pins.

[0013] As a preferred solution, the outer end of the fixing ring is exposed outside the cover plate and is fixedly provided with a signal disk.

[0014] As a preferred solution, a pin hole is axially provided on any blade, an elastic locking pin is provided in the pin hole, and a locking hole matching with the elastic locking pin is provided on the driving wheel.

[0015] The utility model arranges the oil inlet and outlet channels for driving the rotor to rotate forward and reverse on the rotor, and arranges the oil inlet and outlet channels for one power direction inside the rotor, while processing the oil inlet and outlet channels for the other power direction on the surface of the rotor, which reduces the difficulty of machining and forming the rotor, is beneficial to improving machining efficiency and saving machining costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the overall structure of an embodiment of the utility model;

[0017] Figure 2 This is an external view of the overall structure of an embodiment of the utility model;

[0018] Figure 3 It is an exploded view of the overall structure of an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the rotor and the oil-isolating retaining ring of an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figure 1-4 :

[0022] A VVT phase actuator comprises a stator 1, a rotor 2, an elastic locking pin 3, an oil-isolating retaining ring 4, a driving wheel 5, a cover plate 6, a fixing ring 7 and a signal disk 8.

[0023] The stator 1 is a circular ring, and its inner peripheral wall is formed in an integral and uniform manner with five bosses 1.1, and the five bosses 1.1 are divided into five compartments 1.2.

[0024] The rotor 2 comprises a cylindrical portion 2.1 and an integrally formed wheel shaft portion 2.2 coaxially arranged on one end face of the cylindrical portion 2.1. A first central through hole 2.11 is arranged in the cylindrical portion 2.1, and a second central through hole 2.21 directly connected to the first central through hole 2.11 is arranged in the wheel shaft portion 2.2. Five blades 2.12 are integrally formed in an annular shape on the outer peripheral wall of the cylindrical portion 2.1. The cylindrical portion 2.1 is rotatably arranged in the center of the stator 1, and the five blades 2.12 are rotatably arranged in different compartments 1.2 in a one-to-one correspondence, and one end of the wheel shaft portion 2.2 is exposed to the outside of the stator 1.

[0025] The elastic locking pin 3 is movably arranged in a pin hole axially arranged on any blade 2.12 and is partially exposed on the side of the blade 2.12 facing the wheel shaft portion 2.2.

[0026] Five blades 2.12 separate five oil chambers 2.13 on the outer wall of the cylindrical part 2.1. Each of the two circumferential ends of the oil chamber 2.13 is connected with an L-shaped oil hole 2.3 and a linear oil groove 2.14, respectively, for introducing high-pressure oil to drive the rotor 2 to rotate back and forth within the compartment 1.2. All L-shaped oil holes 2.3 are arranged inside the rotor 2, and the oil inlet sections are arranged axially and the oil outlet sections are arranged radially. The oil inlets of all L-shaped oil holes 2.3 are evenly arranged in a circle. The outer end surface of the axle portion 2.2 and the oil outlet at the periphery of the second central through hole 2.21 are arranged on the outer side wall of the cylindrical portion 2.1 and are connected to their respective corresponding oil chambers 2.13; all the linear oil grooves 2.14 are radially arranged on the end surface of the cylindrical portion 2.1 away from the axle portion 2.2 and are evenly arranged in an annular manner at the periphery of the first central through hole 2.11, and the inner ends of all the linear oil grooves 2.14 are connected to the first central through hole 2.11, and the outer ends are connected to their respective corresponding oil chambers 2.13.

[0027] An annular sealing groove 2.15 is also provided on the end surface of the cylindrical portion 2.1 away from the wheel shaft portion 2.2. The annular sealing groove 2.15 is concentrically arranged with the first central through hole 2.11 and is connected with all the linear oil grooves 2.14. All the linear oil grooves 2.14 have the same depth, and the depth of the annular sealing groove 2.15 is less than the depth of the linear oil grooves 2.14.

[0028] The oil separator ring 4 is embedded in the annular oil groove 2.15. The outer peripheral wall of the oil separator ring 4 is integrally formed with five protrusions 4.1. The five protrusions 4.1 are respectively engaged in five linear oil grooves 2.14 to prevent the oil separator ring 4 from circumferential movement.

[0029] The driving wheel 5 and the cover plate 6 are respectively arranged at both ends of the stator 1 to respectively seal the cylindrical portion 2.1 of the rotor 2 inside the stator 1 from the corresponding two sides. Five screws 9 are respectively passed through five pairs of nail holes correspondingly arranged on the cover plate 6 and the five blades 2.12 and then screwed into the five screw holes correspondingly arranged on the driving wheel 5, so as to lock and fix the driving wheel 5 and the cover plate 6 to the stator 1 as a whole.

[0030] The driving wheel 5 is located at one end of the stator 1 close to the wheel shaft 2.2 and is rotatably sleeved on the wheel shaft 2.2 through its wheel center hole. The inner surface of the driving wheel 5 is also provided with a locking hole 5.1 for matching with the elastic locking pin 3.

[0031] The cover plate 6 is located at the other end of the stator 1 away from the wheel shaft portion 2.2 and has a third center through hole 6.1 on its plate surface. The third center through hole 6.1 is concentrically arranged with the first center through hole 2.11 and has a larger aperture than the first center through hole 2.11, so that the cover plate 6 can be pressed against the outer circumference of the oil separator ring 4 and the five protrusions 4.1.

[0032] The fixing ring 7 is movably arranged in the third center through hole 6.1, and its inner end is pressed against the inner circumference of the oil-isolating retaining ring 4 and is fixedly connected to the rotor 2 by a pin 10. The outer end of the fixing ring 7 is exposed outside the cover plate 6, and its ring mouth is directly connected to the first center through hole 2.11.

[0033] The signal disk 8 is flat against the outer end surface of the fixing ring 7 and is fixedly connected to the fixing ring 7 via rivets 11 . The disk surface of the signal disk 8 is arranged at a fourth central through hole 8 . 1 that is butted against the ring opening of the fixing ring 7 .

[0034] During operation, high-pressure oil flows in and out of the oil chamber 2.13 alternately along the L-shaped oil hole 2.3 and the linear oil groove 2.14. The high-pressure oil entering the oil chamber 2.13 along the L-shaped oil hole 2.3 can drive the rotor 2 to rotate in the unlocking direction (at this time, another high-pressure oil enters the pin hole to push the elastic locking pin 3 out of the locking hole 5.1). The high-pressure oil entering the oil chamber 2.13 along the linear oil groove 2.14 can drive the rotor 2 to rotate in the locking direction until the elastic locking pin 3 is pushed into the locking hole 5.1 again.

[0035] During the specific implementation process, the blades 2.12 on the rotor 2 are not limited to the five in this embodiment. Three to five blades 2.12 can be preferably used according to the size of the rotor 2. Accordingly, the number of related structures such as the compartment 1.2, L-shaped oil hole 2.3, linear oil groove 2.14, and protrusion 4.1 also needs to be set accordingly.

Claims

1. A VVT phase actuator, comprising a stator, a rotor, a driving wheel and a cover plate, wherein the stator is a toroidal body and its inner peripheral wall is provided with a plurality of compartments, the rotor comprises a cylindrical portion and a wheel shaft portion provided on one end face of the cylindrical portion, a first central through hole is provided in the cylindrical portion, a second central through hole directly connected to the first central through hole is provided in the wheel shaft portion, the cylindrical portion is rotatably arranged in the center of the stator, one end of the wheel shaft portion is exposed to the outside of the stator, a plurality of blades are provided on the outer peripheral wall of the cylindrical portion, and the plurality of blades are rotatably arranged in different compartments one by one, the driving wheel and the cover plate are respectively provided at the two ends of the stator and are locked and fixed to the stator as a whole, so as to respectively seal the cylindrical portion of the rotor in the stator from the corresponding two sides, the driving wheel is provided at one end of the stator close to the wheel shaft portion and is movably sleeved on the wheel shaft portion through its wheel center hole, and a plurality of blades separate a plurality of oil chambers on the outer wall of the cylindrical portion, characterized in that: Each oil cavity is respectively connected to an L-shaped oil hole and a linear oil groove at both circumferential ends for introducing high-pressure oil to drive the rotor to rotate back and forth within the cavity; all L-shaped oil holes are arranged inside the rotor, and the oil inlet sections are axially arranged and the oil outlet sections are radially arranged. The oil inlets of all L-shaped oil holes are evenly arranged on the outer end surface of the wheel shaft portion outside the second center through hole, and the oil outlets are arranged on the outer side wall of the cylindrical portion and connected to the corresponding oil cavities; all linear oil grooves are radially arranged on the end surface of the cylindrical portion away from the wheel shaft portion and are evenly arranged on the periphery of the first center through hole. The inner ends of all linear oil grooves are connected to the first center through hole, and the outer ends are connected to the corresponding oil cavities.

2. A VVT phase actuator according to claim 1, characterized in that: An annular sealing groove is also provided on the end surface of the cylindrical portion away from the wheel shaft portion. The annular sealing groove is arranged concentrically with the first central through hole and is connected with all the linear oil grooves.

3. A VVT phase actuator according to claim 2, characterized in that: All the linear oil grooves have the same depth, and the depth of the annular seal groove is smaller than that of the linear oil groove.

4. A VVT phase actuator according to claim 3, characterized in that: An oil-isolating retaining ring is embedded in the annular sealing groove.

5. A VVT phase actuator according to claim 4, characterized in that: The outer peripheral wall of the oil-isolating retaining ring is integrally formed with a plurality of protrusions, and the plurality of protrusions are respectively clamped in different linear oil grooves in a one-to-one correspondence.

6. A VVT phase actuator according to claim 5, characterized in that: The cover plate is located at the other end of the stator away from the wheel shaft portion and is pressed against the outer circumference of the oil separation retaining ring and a plurality of protrusions.

7. The VVT ​​phase actuator according to claim 6, characterized in that: A third central through hole is arranged on the plate surface of the cover plate. The third central through hole is arranged concentrically with the first central through hole and has a larger aperture than that of the first central through hole.

8. The VVT ​​phase actuator according to claim 7, characterized in that: A fixing ring is arranged in the third central through hole, and the inner end of the fixing ring is pressed against the inner circumference of the oil-isolating retaining ring and is fixedly connected to the rotor through pins.

9. A VVT phase actuator according to claim 8, characterized in that: The outer end of the fixing ring is exposed outside the cover plate and is fixed with a signal disk.

10. A VVT phase actuator according to any one of claims 1 to 9, characterized in that: A pin hole is axially arranged on any blade, an elastic locking pin is arranged in the pin hole, and a locking hole matched with the elastic locking pin is arranged on the driving wheel.

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