Locking mechanism of VVT phase actuator

Abstract

The utility model relates to a locking mechanism of a VVT phase actuator, and belongs to the technical field of VVT phase actuators, the phase actuator comprises a stator, a rotor, a driving wheel and an end cover, the rotor is arranged in the stator, the driving wheel comprises a spoke disc and an external gear integrally formed and arranged on the periphery of the spoke disc, the spoke disc and the end cover are fixedly arranged at the two ends of the stator respectively, and the end cover is fixedly arranged on the stator. An oil hole for driving the rotor to alternately enter the locking position and the unlocking position is formed in the rotor; the locking mechanism comprises a lock hole, a pin hole and a lock pin assembly, the lock hole is formed in the inner side face of the spoke disc, the pin hole is formed in the rotor, the lock pin assembly is arranged in the pin hole, and the lock pin assembly comprises a spring seat, a lock pin and a spring; the inner side face of the spoke disc is provided with an embedding groove communicated with an orifice of the lock hole, the embedding groove is located on the lock pin inlet and outlet side of the lock hole and located on the rotating track of the lock pin, an insert is arranged in the embedding groove, and the lock pin rotates along the insert to be separated from the lock hole when the lock pin is unlocked and lifted. The locking mechanism disclosed by the utility model is simple and quick to process and mount.

Description

TECHNICAL FIELD

[0001] The utility model relates to a VVT phase executor, especially a locking mechanism of VVT phase executor. BACKGROUND

[0002] When the VVT phase executor is unlocked, the locking pin will produce shearing action on the locking hole of the side to be removed in the pin starting process. The place is prone to wear and tear, so the hole wall will take hardness measures to slow down the wear and tear. The existing measures are: ① high frequency quenching treatment is carried out on the locking hole wall to improve the hardness of the hole; ② a high hardness ring is pressed into the locking hole. For measure ①, deformation and cracking are prone to occur at the high frequency quenching position, the material yield rate is not high, especially when the hole wall is thin, causing economic loss, and there will be black surface phenomenon, affecting the appearance. If you want to cover the black place, you need further processing. For measure ②, the locking hole and the ring need interference fit, so the hole diameter of the locking hole and the outer diameter of the ring need to be finished, and the pressing depth needs to be controlled during pressing, and the pressing needs to be inspected after pressing. Therefore, this measure needs certain operation ability and time consumption in product processing, assembly and inspection. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at improving the above-mentioned deficiencies existing in the locking mechanism of the existing VVT phase executor.

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

[0005] A locking mechanism of VVT phase executor, the phase executor includes a stator, a rotor, a drive wheel and an end cover, the stator is annular and its ring wall is convex between intervals to form a plurality of limiting grooves on its inner side, the rotor includes a cylindrical body with an axis hole and a plurality of blades arranged around the outer wall of the cylindrical body, the cylindrical body is rotatably arranged in the stator, the plurality of blades are one-to-one corresponding and rotatably arranged in the plurality of limiting grooves and tightly abut the top of the limiting groove where each blade is located, the drive wheel includes a spoke disc and an external gear integrally formed on the periphery of the spoke disc, the spoke disc and the end cover are fixedly arranged at both ends of the stator respectively and matched with the cylindrical body, which encloses the plurality of blades in the limiting groove where each blade is located, and the two sides of the plurality of blades are in close contact with the spoke disc and the end cover; the cylindrical body on both sides of each blade is provided with an oil hole communicating with the axis hole, and the oil holes on both sides alternately guide high-pressure oil into and out of the limiting groove on both sides of the blade to drive the blade to alternately abut the two ends of the limiting groove, and then make the rotor alternately enter the locking position and the unlocking position.

[0006] The locking mechanism is used for locking the rotor in the locking position, which comprises a locking hole, a pin hole and a locking pin assembly. The locking hole is a blind hole and is arranged on the inner side of the spoke disc. The pin hole is a through hole and is arranged on the cylinder in the position which is in rotational connection with the locking hole. The locking pin assembly is arranged in the pin hole, which comprises a spring seat, a locking pin and a spring. The spring seat is fixedly arranged on the pin hole near one end of the end cover. The locking pin is movably arranged on the pin hole near the spoke disc. One end of the spring is fixed on the spring seat and the other end supports the tail of the locking pin, so that the head of the locking pin is elastically supported on the inner side of the spoke disc.

[0007] The inner side of the spoke disc is provided with an embedding groove which is in communication with the hole of the locking hole. The embedding groove is located on the locking pin entering and exiting side of the locking hole and on the rotational track of the locking pin. A matching block which has the same shape as the embedding groove is fixedly arranged in the embedding groove. One end of the matching block is in circumferential connection with the hole edge of the locking hole and the exposed surface is flush with the inner side of the spoke disc, so that the locking pin can rotate and disengage from the locking hole when the locking pin is unlocked.

[0008] As a preferred solution, the matching block is in the shape of a shallow V and the cross section is in the shape of a rectangle. The entire exposed surface of the matching block is on the rotational track of the locking pin. The end of the matching block which is in connection with the locking hole is provided with a curved surface which can form a perfect circle with the hole edge of the locking hole. The other end of the matching block is away from the locking hole and deviates from the rotational track of the locking pin, so that the matching block is fixedly arranged in the embedding groove in the circumferential direction.

[0009] As a preferred solution, the matching block is a high-hardness metal block.

[0010] As a preferred solution, the matching block is a stamped metal block.

[0011] As a preferred solution, the matching block is a stamped iron block or a stamped stainless steel block.

[0012] As a preferred solution, the end cover is provided with a first center hole which is in straight line communication with the shaft hole.

[0013] As a preferred solution, the spoke disc is provided with a disc center hole which is in straight line communication with the shaft hole.

[0014] As a preferred solution, the outer side of the spoke disc is provided with a disc cover which is provided with a second center hole which is in straight line communication with the disc center hole.

[0015] As a preferred solution, the stator, the driving wheel, the end cover and the disc cover are fixedly connected as a whole by screws.

[0016] As a preferred solution, a spring spiral disc is arranged between the spoke disc and the disc cover for driving the rotor into the locking position. The inner end of the spring spiral disc is connected with a fixed rod arranged on the rotor. The middle part of the spring spiral disc is wound around a screw and a guide rod arranged on the rotor. The outer end of the spring spiral disc is connected with another screw. The fixed rod and the guide rod are exposed between the spoke disc and the disc cover through the arc-shaped hole arranged on the spoke disc.

[0017] The utility model discloses a kind of high-hardness stamping inserts are placed in the contact place when locking pin unlocking, to reach the effect of slowing down abrasion driving disc, the scheme has following beneficial effects:

[0018] 1. Insert is by stamping processing, processing simple, fast, high consistency, simple inspection means;

[0019] 2. Insert installation is simple, worker only needs to put gently, greatly improves assembly efficiency and quality;

[0020] 3. It is particularly suitable for near edge or thin hole wall lock hole;

[0021] 4. It does not affect appearance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 for the external view of the utility model embodiment

[0023] Figure 2 for the utility model embodiment explosion view

[0024] Figure 3 for the utility model embodiment certain angle section view

[0025] Figure 4 for the utility model embodiment another angle section view

[0026] Figure 5 for the insert action schematic diagram of the utility model embodiment

[0027] Figure 6 for the insert installation structure schematic diagram of the utility model embodiment

[0028] Figure 7 for the utility model embodiment partial explosion view DETAILED DESCRIPTION

[0029] The utility model will be described below in connection with the drawings and specific embodiment.

[0030] As Figures 1-7 The locking mechanism of a VVT phase actuator shown in the figure, phase actuator includes stator 1, rotor 2, driving wheel 3, end cover 4, locking pin assembly 5 and disc cover 7.

[0031] Stator 1 is annular, and its ring wall is convex between intervals to form multiple limiting grooves 1.1 on its inner side.

[0032] The rotor 2 includes a cylinder 2.1 with a shaft hole 2.11 and a plurality of blades 2.2 arranged around the outer wall of the cylinder 2.1. The cylinder 2.1 is rotatably disposed inside the stator 1. The plurality of blades 2.2 are rotatably disposed in a plurality of limiting grooves 1.1 and are tightly abutting the top of their respective limiting grooves 1.1.

[0033] The drive wheel 3 includes a spoke 3.1 and an external gear 3.2 integrally formed on the periphery of the spoke 3.1. The spoke 3.1 and the end cap 4 are respectively fixed at both ends of the stator 1 and cooperate with the cylinder 2.1, together enclosing multiple blades 2 in their respective limiting grooves 1.1. Both sides of the multiple blades 2.2 are in close contact with the spoke 3.1 and the end cap 4.

[0034] Each blade 2.2 has an oil hole 2.13 on the cylinder 2.1 on both sides that connects to the shaft hole 2.11. The oil holes 2.13 on both sides alternately introduce and discharge high-pressure oil into the limiting groove 1.1 on both sides of the blade 2.2, so as to drive the blade 2.2 to alternately abut against the two ends of the limiting groove 1.1, thereby causing the rotor 2 to alternately enter the locked position and the unlocked position.

[0035] The end cap 4 has a first center hole 4.1 that is linearly connected to the shaft hole 2.11, and the spoke 3.1 has a disc center hole 3.13 that is linearly connected to the shaft hole 2.11; the disc cover 7 is located on the outside of the spoke 3.1, and the disc cover 7 has a second center hole 7.1 that is linearly connected to the disc center hole 3.13; the stator 1, the drive wheel 3, the end cap 4 and the disc cover 7 are locked together as one unit by screws 8.

[0036] Between the spoke 3.1 and the cover 7, there is an elastic spiral disc 9 for driving the rotor 2 into the locked position. The inner end of the elastic spiral disc 9 is connected to the fixing rod 10 provided on the rotor 2, the middle part is wrapped with a screw 8 and the guide rod 11 provided on the rotor 2, and the outer end is connected to another screw 8. The fixing rod 10 and the guide rod 11 are both exposed between the spoke 3.1 and the cover 7 through the arc-shaped hole 3.14 provided on the spoke 3.1.

[0037] A locking mechanism is located between the rotor and the drive wheel to lock the rotor 2 in the locked position. This locking mechanism includes a locking hole 3.11, a pin hole 2.12, and a locking pin assembly 5. The locking hole 3.11 is a blind hole located on the inner side of the spoke 3.1. The pin hole 2.12 is a through hole axially located on the cylinder 2.1 at a position where it rotatably engages with the locking hole 3.11. The locking pin assembly 5 is located within the pin hole 2.12 and includes a spring seat 5.1, a locking pin 5.2, and a spring 5.3. The spring seat 5.1 is fixed to one end of the pin hole 2.12 near the end cap 4. The locking pin 5.2 is movably located at one end of the pin hole 2.12 near the spoke 3.1. One end of the spring 5.3 is fixed to the spring seat 5.1, and the other end supports the tail of the locking pin 5.2, so that the head of the locking pin 5.2 is elastically supported against the inner side of the spoke 3.1.

[0038] In order to alleviate the wear of the lock hole 3.11 caused by the lock pin 5.2, the inner side of the spoke disc 3.1 is provided with an embedded groove 3.12 which communicates with the hole of the lock hole 3.11, the embedded groove 3.12 is located at the side of the lock pin 5.2 entering and leaving the lock hole 3.11 and is located on the rotation track of the lock pin 5.2, and the embedded groove 3.12 is fixedly provided with an inlay 6 which has the same shape as the embedded groove 3.12, one end of the inlay 6 is circumferentially butted against the hole edge of the lock hole 3.11 and the exposed surface is flush with the inner side of the spoke disc 3.1, so that the lock pin 5.2 can rotate along the inlay 6 to disengage from the lock hole 3.11 when the lock pin 5.2 is unlocked.

[0039] The inlay 6 is a high-hardness metal block, specifically a punched iron block or a punched stainless steel block; the inlay 6 is in the shape of a shallow V as a whole and has a rectangular cross section, the entire exposed surface of the inlay 6 is located on the rotation track of the lock pin 5.2, the butted end of the inlay 6 against the lock hole 3.11 is provided with a curved surface 6.1 which can form a perfect circle together with the hole edge of the lock hole 3.11, and the other end of the inlay 6 is away from the lock hole 3.11 and deviates inward from the rotation track of the lock pin 5.2, so that the inlay 6 is circumferentially fixed in the embedded groove 3.12.

Claims

1. A locking mechanism of a VVT phase actuator, the phase actuator comprising a stator (1), a rotor (2), a driving wheel (3) and an end cover (4), the stator (1) is annular and its ring wall is outwardly convex to form a plurality of limiting grooves (1.1) on its inner side, the rotor (2) comprises a cylinder (2.1) with an axial hole (2.11) and a plurality of vanes (2.2) arranged around the outer wall of the cylinder (2.1), the cylinder (2.1) is rotatably arranged inside the stator (1), the plurality of vanes (2.2) are respectively and rotatably arranged in the plurality of limiting grooves (1.1) and tightly abut the top of the respective limiting groove (1.1), the driving wheel (3) comprises a spider (3.1) and an external gear (3.2) integrally formed on the periphery of the spider (3.1), the spider (3.1) and the end cover (4) are respectively fixedly arranged at the two ends of the stator (1) and cooperated with the cylinder (2.1) to jointly enclose the plurality of vanes (2) in the respective limiting groove (1.1), and the two sides of the plurality of vanes (2.2) are tightly contacted with the spider (3.1) and the end cover (4); the cylinder (2.1) on the two sides of each vane (2.2) is provided with an oil hole (2.13) communicated with the axial hole (2.11), and the two oil holes (2.13) alternately guide high-pressure oil into and out of the limiting grooves (1.1) on the two sides of the vane (2.2) to drive the vane (2.2) to alternately abut the two ends of the limiting groove (1.1) and further make the rotor (2) alternately enter the locked position and the unlocked position. The locking mechanism is used for locking the rotor (2) in the locked position, and comprises a lock hole (3.11), a pin hole (2.12) and a lock pin assembly (5), the lock hole (3.11) is a blind hole and is arranged on the inner side of the spider (3.1), the pin hole (2.12) is a through hole and is axially arranged on the cylinder (2.1) at a position rotatably connected with the lock hole (3.11), and the lock pin assembly (5) is arranged in the pin hole (2.12), the lock pin assembly (5) comprises a spring seat (5.1), a lock pin (5.2) and a spring (5.3), the spring seat (5.1) is fixedly arranged at one end of the pin hole (2.12) close to the end cover (4), the lock pin (5.2) is movably arranged at the other end of the pin hole (2.12) close to the spider (3.1), one end of the spring (5.3) is fixed to the spring seat (5.1) and the other end supports the tail of the lock pin (5.2) to elastically support the head of the lock pin (5.2) on the inner side of the spider (3.1); characterized in that: The inner side of the spider (3.1) is provided with an embedding groove (3.12) communicated with the aperture of the lock hole (3.11), the embedding groove (3.12) is located on the lock pin (5.2) entry and exit side of the lock hole (3.11) and on the rotation track of the lock pin (5.2), and a matching block (6) with the same shape as the embedding groove (3.12) is fixedly arranged in the embedding groove (3.12), one end of the matching block (6) is circumferentially connected with the aperture of the lock hole (3.11) and the exposed surface is flush with the inner side of the spider (3.1) to make the lock pin (5.2) rotate along the matching block (6) and be separated from the lock hole (3.11) when the lock pin (5.2) is unlocked.

2. The lock mechanism of a VVT phase actuator according to claim 1, characterized in that: The whole insert block (6) is in shallow V shape and rectangular cross section, and its whole exposed surface is in the rotation track of the lock pin (5.2), and the end of the insert block (6) which is opposite to the lock hole (3.11) is provided with an arc surface (6.1) which can be surrounded with the hole edge of the lock hole (3.11) to form a perfect circle, and the other end of the insert block (6) is away from the lock hole (3.11) and deviates from the rotation track of the lock pin (5.2) inwardly, so that the insert block (6) is circumferentially fixed in the embedding groove (3.12).

3. A lock mechanism for a VVT phase actuator according to claim 1 or 2, characterized in that: The insert block (6) is a high-hardness metal block.

4. A lock mechanism for a VVT phase actuator according to claim 3, characterized in that: The insert block (6) is a stamped metal block.

5. A lock mechanism for a VVT phase actuator according to claim 4, characterized in that: The insert block (6) is a stamped iron block or a stamped stainless steel block.

6. The lock mechanism of a VVT phase actuator according to claim 1, wherein: The end cover (4) is provided with a first center hole (4.1) which is in linear communication with the shaft hole (2.11).

7. A lock mechanism for a VVT phase actuator according to claim 6, characterized in that: The radial disc (3.1) is provided with a disc center hole (3.13) which is in linear communication with the shaft hole (2.11).

8. A lock mechanism for a VVT phase actuator according to claim 7, characterized in that: The outer side of the radial disc (3.1) is provided with a disc cover (7), and the disc cover (7) is provided with a second center hole (7.1) which is in linear communication with the disc center hole (3.13).

9. A lock mechanism for a VVT phase actuator according to claim 8, characterized in that: The stator (1), the driving wheel (3), the end cover (4) and the disc cover (7) are locked and fixed as a whole by the screw (8).

10. A lock mechanism for a VVT phase actuator according to claim 9, characterized in that: The elastic spiral disc (9) is provided between the radial disc (3.1) and the disc cover (7) for driving the rotor (2) to enter the locking position, the inner end of the elastic spiral disc (9) is connected with the fixed rod (10) provided on the rotor (2), the middle part is wound with a screw (8) and the guide rod (11) provided on the rotor (2), and the outer end is connected with another screw (8), and the fixed rod (10) and the guide rod (11) are exposed between the radial disc (3.1) and the disc cover (7) along the arc hole (3.14) provided on the radial disc (3.1).

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