JP6137064B2 - Valve timing change device - Google Patents

Description

  The present invention relates to a valve timing changing device.

  It is practical to provide a valve timing changing device that changes the opening / closing timing (valve timing) of an engine valve (intake valve or exhaust valve) in an internal combustion engine such as a vehicle (see Patent Document 1, for example). The valve timing changing device described in Patent Document 1 includes a housing that is drivingly connected to a crankshaft of an internal combustion engine, and a vane rotor that is integrally attached to the camshaft. The housing and the vane rotor are relative to each other about the camshaft. It is rotatably arranged. A vane extending in the radial direction is formed in the vane rotor, and the interior of the housing is partitioned into an advance side pressure chamber and a retard side pressure chamber by the vane. These pressure chambers are respectively supplied with regulated oil, and the oil pressure acts on the vanes, so that the relative rotational phase of the vane rotor with respect to the housing, in other words, the relative rotational phase of the camshaft with respect to the crankshaft is advanced. It is changed to the corner side or the retard side. And the valve timing of an internal combustion engine is changed by changing the relative rotation phase of a camshaft in this way.

  Further, the valve timing changing device is provided with a lock mechanism for mechanically locking the relative rotation phase of the camshaft with a predetermined lock phase. The lock mechanism includes a receiving hole formed in the vane and extending in the axial direction of the camshaft, a lock pin provided to be retractable in the receiving hole, and a recess provided in the housing and into which the distal end portion of the lock pin is inserted. (Lock hole). In this lock mechanism, the tip end portion of the lock pin protrudes from the housing hole and is inserted into the lock hole, so that the relative rotational phase of the vane rotor with respect to the housing is fixed at a predetermined phase. As a result, the valve timing of the internal combustion engine is predetermined. Fixed at timing. On the other hand, when the tip of the lock pin enters the accommodation hole and escapes from the lock hole, the fixing of the relative rotational phase of the vane rotor with respect to the housing is released, and the valve timing of the internal combustion engine can be changed. Become.

  Furthermore, an advance angle restricting member that restricts the relative rotational phase of the vane rotor with the most advanced phase (most advanced angle phase) and a retard angle restricting member that regulates with the most retarded phase (most retarded angle phase) are provided. A known valve timing changing device is known. The advance angle restricting member and the retard angle restricting member are for preventing the vane from directly colliding with the housing, and are provided inside the housing so as to restrict the rotation of the vane rotor when the vane hits. It has become.

JP 2012-97630 A

  By the way, the vane rotor is attached to the camshaft by bolt fastening or the like. Therefore, when the vane collides with the advance angle restricting member or the retard angle restricting member, the fixing position of the vane rotor with respect to the camshaft may shift due to the reaction force acting on the vane due to the collision. In this case, since the relative position between the vane rotor and the housing is shifted within the gap between the portions where the vane rotor and the camshaft are fixed, the relative position between the lock pin and the lock hole is shifted. At this time, since the clearance (pin clearance) between the lock pin and the lock hole becomes small, the lock mechanism may malfunction because the lock pin cannot be smoothly removed from the lock hole.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a valve timing changing device capable of suppressing the occurrence of malfunction of a lock mechanism.

  In order to achieve the above object, a valve timing changing device includes a vane rotor that is integrally attached to a camshaft and has vanes protruding in a radial direction, and a housing that is drivingly connected to a crankshaft, and the vane rotor is disposed inside the housing. And a valve timing changing mechanism capable of changing the relative rotational phase of the vane rotor with respect to the housing. Further, the valve timing changing device can be inserted into the receiving hole formed in the vane and extending in the axial direction of the camshaft, the lock pin received in the receiving hole, and the tip of the lock pin formed in the housing. And two locking mechanisms having a locking hole. Further, the valve timing changing device is provided in the housing, and is provided in the housing, an advance angle restricting member that the vane abuts when the relative rotational phase of the vane rotor is the most advanced phase, and the inside of the housing. And a retard angle restricting member against which the vane abuts when the relative rotational phase of the vane rotor is the most retarded phase.

  The two straight lines connecting the lock pin disposition position of the two lock mechanisms and the rotation center of the vane rotor are defined as “L1”, and are perpendicular to the straight line L1 and pass through the lock pin disposition position 2. The straight line of the book is “L2”, and the straight line connecting the intersection of the straight lines L2 and the rotation center of the vane rotor is “L3”. In this case, the direction in the direction of the straight line L3 of the reaction force acting on the vane when the vane hits the advance angle restricting member and the reaction acting on the vane when the vane hits the retard angle restricting member. The advance angle restricting member and the retard angle restricting member are arranged in such a manner that the direction of the force in the direction of the straight line L3 is the same. The vane rotor is attached to the camshaft in a state where the lock pin is offset in the direction of the straight line L3 in the direction of approaching the rotation center.

  In the above valve timing changing device, when the fixed position of the vane rotor with respect to the camshaft is shifted in the direction of the straight line L3, the relative positions of the lock pin and the lock hole in the two lock mechanisms are both shifted.

  In this regard, in the valve timing changing device, in the direction of the straight line L3, the vane rotor acts on the vane when it strikes the retard angle regulating member in a direction in which the fixing position of the vane rotor shifts due to the reaction force acting on the vane when it strikes the advance angle regulating member. The direction in which the fixed position of the vane rotor shifts due to the reaction force is the same direction (specific direction). The vane rotor is attached in a state where the vane rotor is offset in the specific direction with respect to the camshaft in the range of the gap between the fixed portions of the vane rotor and the camshaft.

  As a result, since the gap of the portion of the gap between the fixed portions that allows the vane rotor to shift in the specific direction is small, the vane rotor can be fixed even when the reaction force acts on the vane. Can be prevented from shifting in the specific direction. Therefore, according to the valve timing changing device, the relative positions of the lock pin and the lock hole in the two lock mechanisms are prevented from being shifted together, and the gap (pin clearance) between the lock pin and the lock hole in the lock mechanism is unnecessary reduced. And the occurrence of malfunction of each lock mechanism can be suppressed.

1 is a schematic diagram showing a schematic configuration of an embodiment of a valve timing changing device. Sectional drawing which shows the cross-section of a valve timing change mechanism. Sectional drawing which shows the cross-section of a locking mechanism. Sectional drawing which shows the cross-section of a locking mechanism. Sectional drawing which shows the internal cross-section of a valve timing change mechanism. Sectional drawing which shows the internal cross-section of a valve timing change mechanism. Schematic which shows an example of the positional relationship of a lock pin and a lock hole. Explanatory drawing which shows the fixed aspect of a vane rotor. Sectional drawing which shows the internal cross-section of the valve timing change mechanism of a modification.

Hereinafter, an embodiment of the valve timing changing device will be described.
As shown in FIG. 1 or FIG. 2, the valve timing changing mechanism 20 has a housing 21 and a vane rotor 26 accommodated therein. The housing 21 includes a housing rotor 22 formed in a substantially cylindrical shape, and plates 23 and 24 covering both opening portions of the cylindrical shape. A gear 25 is integrally formed on the outer surface of the housing 21, and the housing 21 is connected via the gear 25 so as to rotate in synchronization with the crankshaft of the internal combustion engine 10. The vane rotor 26 is integrally attached to the camshaft 11 that drives the engine valve (intake valve or exhaust valve) through fastening and fixing of the center bolt 13.

  On the outer periphery of the vane rotor 26, a plurality of (three in the present embodiment) vanes 27 extending in the radial direction are formed at intervals in the circumferential direction. A plurality (three in this embodiment) of groove portions 28 extending at intervals in the circumferential direction are formed on the inner periphery of the housing rotor 22. The vanes 27 of the vane rotor 26 are disposed one by one in the groove portion 28 of the housing rotor 22. An advance side pressure chamber 29 and a retard side pressure chamber 30 are formed in each groove portion 28 by being partitioned by the vane 27.

  The vane 27 is set to have a desired relative rotation phase in the groove 28 due to the difference in hydraulic pressure between the advance side pressure chamber 29 and the retard side pressure chamber 30 formed on both side surfaces thereof. The As a result, the vane rotor 26 is rotated relative to the housing 21, and the relative rotation phase of the camshaft 11 with respect to the crankshaft is changed, so that the valve timing of the engine valve is changed.

  Further, the internal combustion engine 10 is provided with an oil pump 12 for pumping oil to the valve timing changing mechanism 20. An oil control valve is provided in the hydraulic circuit connecting the valve timing changing mechanism 20 and the oil pump 12. Then, through the operation control of the oil control valve, the oil supply / discharge mode to the advance side pressure chamber 29 and the retard side pressure chamber 30 of the valve timing changing mechanism 20 is controlled. In the present embodiment, the center bolt 13 is provided with an oil control valve function.

  As shown in FIG. 1, the oil control valve is connected to an oil pan 14 for storing oil via a supply oil passage 41. The oil pump 12 is provided in the middle of the supply oil passage 41. The oil pumped by the oil pump 12 is supplied to the oil control valve through the supply oil passage 41. In addition, the oil control valve is connected to the oil pan 14 via a discharge oil passage 42. Oil in the oil control valve can be returned to the oil pan 14 through the drain oil passage 42.

  On the other hand, the oil control valve is connected to the advance side pressure chamber 29 of the valve timing changing mechanism 20 via the advance side oil passage 43 and also to the retard side of the mechanism 20 via the retard side oil passage 44. The pressure chamber 30 is connected. The supply oil passage 41 is branched between the oil pump 12 and the oil control valve. One of the branched oil passages (valve control oil passage 41A) functions as an oil passage for supplying oil to either the advance side pressure chamber 29 or the retard side pressure chamber 30, and the other (lock The control oil passage 41B) functions as an oil passage for supplying oil to a lock release chamber described later.

Hereinafter, a specific structure of the valve timing changing mechanism 20 will be described.
As shown in FIG. 2, a fixed hole 31 extending in the direction of the rotation axis C <b> 1 of the camshaft 11 is formed at the rotation center of the vane rotor 26. Then, the camshaft 11 is inserted from one side (right side in the figure) of the fixing hole 31 and the center bolt 13 is inserted from the other side (left side in the figure) via the collar 15, so that the peripheral part of the fixing hole 31 of the vane rotor 26 is interposed. The center bolt 13 is fastened and fixed to the camshaft 11 by being sandwiched between the two.

  As shown in FIG. 1, the valve timing changing mechanism 20 is provided with two lock mechanisms 50A and 50B for fixing the valve timing at a predetermined timing. The lock mechanisms 50A and 50B are provided on the two vanes 27, and the housing 21 and the vane rotor are engaged through engagement between a lock pin 51 provided in the vane 27 of the vane rotor 26 and a recess formed in the housing 21. 26 to restrict relative rotation with H.26.

  Hereinafter, a specific structure of the lock mechanisms 50A and 50B will be described. Since the basic structure of the two lock mechanisms 50A and 50B is the same, only the structure of one of them (the lock mechanism 50A) will be described here.

  The vane 27 of the lock mechanism 50A is formed with an accommodation hole 52 that extends in parallel with the rotation axis C1 of the camshaft 11 and has a circular cross section. As shown in FIGS. 3 and 4, a cylindrical lock pin 51 is housed in the housing hole 52 in a state where it can be projected and retracted, and the lock pin 51 projects toward the outside of the housing hole 52. A spring 53 that is constantly urged in the direction (escape direction) is provided. A recess (lock hole 54) into which the tip of the lock pin 51 can be inserted is formed at a position where the tip of the lock pin 51 faces on the inner surface of the housing 21 (specifically, its plate 23).

  On the outer peripheral surface of the lock pin 51, a step portion 55 having a shape in which the outer diameter changes stepwise is formed. The step portion 55 has a shape in which the outer diameter of the proximal end (plate 24 side) portion is larger than the outer diameter of the distal end side (plate 23 side) portion of the lock pin 51. In addition, a lock release chamber 58 is defined in the interior of the accommodation hole 52 by the inner surface of the accommodation hole 52 and the outer surface of the step portion 55 of the lock pin 51. The lock release chamber 58 is connected to an oil control valve via a lock release oil passage 45, and has a structure capable of supplying and discharging oil via the oil control valve and the lock release oil passage 45.

  When oil is supplied to the lock release chamber 58, the lock pin 51 moves in the immersion direction (upward in the figure) against the biasing force of the spring 53 by the biasing force due to the internal pressure. On the other hand, when oil is discharged from the inside of the lock release chamber 58, the pressure in the lock release chamber 58 is reduced, so that the lock pin 51 is pulled out of the accommodation hole 52 by the urging force of the spring 53 (downward in the figure). It becomes movable.

  When the operation of the internal combustion engine 10 is stopped, the oil pump 12 is also stopped, so that the internal pressure of the lock release chamber 58 is lowered. Therefore, the lock pin 51 is urged in the escape direction and moves. As a result, the tip portion of the lock pin 51 comes out of the receiving hole 52 and is inserted into the lock hole 54 of the housing 21 (the state shown in FIG. 3), and the relative rotation between the housing 21 and the vane rotor 26 is restricted. It becomes a locked state.

  On the other hand, when the operation of the internal combustion engine 10 is started and oil is supplied to the lock release chamber 58, the lock pin 51 moves in the immersion direction. As a result, the tip end portion of the lock pin 51 is removed from the lock hole 54 (the state shown in FIG. 4), and the housing 21 and the vane rotor 26 can be rotated relative to each other (the unlocked state).

  As shown in FIGS. 1 and 5, the valve timing changing mechanism 20 includes a vane 27 of the vane rotor 26 when the relative rotational phase of the vane rotor 26 with respect to the housing 21 is the most advanced phase (the most advanced angle phase). An advance angle restricting member 61 having a shape with which the abuts against is provided. FIG. 5 shows a state in which the relative rotational phase of the vane rotor 26 is the most advanced angle phase and the vane 27 is in contact with the advance angle regulating member 61.

  As shown in FIGS. 1 and 6, the valve timing changing mechanism 20 includes a vane of the vane rotor 26 when the relative rotational phase of the vane rotor 26 with respect to the housing 21 is the most retarded phase (most retarded phase). A retarding restriction member 62 having a shape with which 27 abuts is provided. FIG. 6 shows a state where the relative rotational phase of the vane rotor 26 is the most retarded phase and the vane 27 is in contact with the retard regulating member 62.

  As shown in FIGS. 1, 5, and 6, the advance angle restricting member 61 and the retard angle restricting member 62 are formed in a shape extending in a columnar shape in the direction of the rotation axis C <b> 1 of the camshaft 11. The advance angle restricting member 61 and the retard angle restricting member 62 are respectively end portions in the circumferential direction of the groove portion 28 of the housing 21 and are sandwiched between two vanes 27 provided with the lock mechanisms 50A and 50B. Arranged in position. By providing the advance angle regulating member 61 and the retard angle regulating member 62, the vane rotor 26 (specifically, the vane 27) is prevented from directly colliding with the housing 21.

  By the way, the vane rotor 26 is attached to the camshaft 11 through fastening and fixing of the center bolt 13. Therefore, when the vane 27 collides with the advance angle restricting member 61 or the retard angle restricting member 62 during the relative rotation of the vane rotor 26, the reaction force (the force indicated by the arrow F1 in FIG. The force indicated by the arrow F2 in FIG. 6) may cause the vane rotor 26 to be fixed to the camshaft 11 at a fixed position. In this case, since the relative position of the vane rotor 26 and the camshaft 11 is shifted in the range of the gap (specifically, the gap between the center bolt 13 and the vane rotor 26) where the vane rotor 26 is fixed to the camshaft 11, the vane rotor 26 and the housing 21 are displaced relative to each other, and as a result, the relative position between the lock pin 51 and the lock hole 54 is displaced. At this time, since the clearance (pin clearance) between the lock pin 51 and the lock hole 54 becomes small, the lock mechanisms 50A and 50B are actuated such that the lock pin 51 cannot be smoothly removed from the lock hole 54. May cause failure.

  Here, as shown in FIG. 7, the two straight lines connecting the axis of the lock pin 51 of each of the lock mechanisms 50A and 50B and the rotation center C2 of the vane rotor 26 are defined as “L1”, orthogonal to the straight line L1 and locked. Two straight lines passing through the axis of the pin 51 are referred to as “L2”, and a straight line connecting the intersection of the straight lines L2 and the rotation center C2 of the vane rotor 26 is referred to as “L3”. The rotation center C2 is the rotation center of the vane rotor 26 when it is assumed that the vane rotor 26 is attached to the camshaft 11 in a state where the attachment error is “0”. In the valve timing changing device of the present embodiment, when the fixing position of the vane rotor 26 with respect to the camshaft 11 is shifted in the direction of the straight line L3, the relative position of the vane rotor 26 with respect to the housing 21 is shifted. As described above, the relative positions of the lock pin 51 and the lock hole 54 in the two lock mechanisms 50A and 50B are shifted together. This is particularly undesirable because the two lock mechanisms 50A and 50B cause malfunctions at the same time.

  In view of this point, in the valve timing changing device of the present embodiment, the position of the advance angle restricting member 61 and the retard angle restricting member 62 in the housing 21 and the manner in which the vane rotor 26 is fixed to the camshaft 11 are affected by the malfunction. It is set in a mode that makes it possible to suppress the occurrence of.

  Specifically, as shown in FIG. 8, the reaction force acting on the vane 27 when the vane 27 hits the advance angle regulating member 61 (the force indicated by the arrow F1 in the drawing) in the direction of the straight line L3 and The direction of the reaction force (force indicated by the arrow F2 in the figure) in the straight line L3 direction when the vane 27 hits the retarding restriction member 62 is the same direction (right direction in the figure). The advance angle restricting member 61 and the retard angle restricting member 62 are arranged so as to be. Specifically, the advance angle restricting member 61 and the retard angle restricting member 62 are respectively provided at positions sandwiched between the vane 27 provided with the lock mechanism 50A and the vane 27 provided with the lock mechanism 50B.

  The vane rotor 26 is attached to the camshaft 11 in a state in which the lock mechanisms 50A and 50B are offset in the direction close to the rotation center C2 (right direction in the drawing) in the direction of the straight line L3. Specifically, the vane rotor is configured such that the gap W1 in the portion near the lock mechanisms 50A and 50B in the direction of the straight line L3 in the gap between the vane rotor 26 and the center bolt 13 is larger than the gap W2 in the portion far from the lock mechanisms 50A and 50B. 26 is attached. In FIG. 8, the gap between the vane rotor 26 and the center bolt 13 is exaggerated for easy understanding of the fixed position of the vane rotor 26, but the actual gap is extremely small (for example, several tens of micrometers).

Hereinafter, the operation of the vane rotor 26, the advance angle restricting member 61, and the retard angle restricting member 62 as described above will be described.
In the present embodiment, in the direction of the straight line L3, the vane rotor 26 is fixed to the vane 27 when it strikes the retard angle regulating member 62 and the direction in which the vane rotor 26 is fixed due to the reaction force F1 acting on the vane 27 when it strikes the advance angle regulating member 61. The direction in which the fixing position of the vane rotor 26 shifts due to the reaction force F2 acting is the same direction (specific direction P1). The vane rotor 26 is attached to the camshaft 11 in a state where it is offset in the specific direction P1 within the range of the gap between the vane rotor 26 and the center bolt 13.

  As a result, the gap W1 in the portion close to the locking mechanisms 50A and 50B in the direction of the straight line L3 in the gap in the fixed portion between the vane rotor 26 and the camshaft 11, that is, the portion that allows the vane rotor 26 to shift in the specific direction P1 The gap is small. Therefore, even when the reaction forces F1 and F2 act on the vane 27, it is possible to prevent the fixed position of the vane rotor 26 from shifting in the specific direction P1. Therefore, the relative positions of the lock pin 51 and the lock hole 54 in the two lock mechanisms 50A and 50B can be suppressed from shifting, and unnecessary reduction in the pin clearance of the lock mechanisms 50A and 50B can be suppressed. Occurrence of malfunctions of 50A and 50B can be suppressed. In particular, since the fixed position of the vane rotor 26 is suppressed from shifting in the specific direction P1, it is possible to suppress the malfunctions of the lock mechanisms 50A and 50B at the same time.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The direction of the reaction force F1 acting on the vane 27 when it abuts against the advance angle restricting member 61 in the direction of the straight line L3, and when the vane 27 abuts against the retard angle restricting member 62, The advance angle restricting member 61 and the retard angle restricting member 62 are arranged so that the direction of the acting reaction force F2 in the direction of the straight line L3 is the same. Then, the vane rotor 26 was attached to the camshaft 11 in a state where the lock mechanisms 50A and 50B were offset in the direction close to the rotation center C2 of the vane rotor 26 in the direction of the straight line L3. Therefore, it is possible to suppress the occurrence of malfunctions of the lock mechanisms 50A and 50B.

The above embodiment may be modified as follows.
-The structure of each locking mechanism 50A, 50B can be changed arbitrarily.
The shape of the advance angle restricting member 61 and the retard angle restricting member 62 is not limited to a cylindrical shape, and can be changed to an arbitrary shape such as an elliptical prism shape or a quadrangular prism shape.

  As shown in FIG. 9, the advance angle restricting member 71 and the retard angle restricting member 72 are provided at both ends in the circumferential direction of the groove portion 28 in which the vane 27 in which the lock mechanisms 50A and 50B are not provided is accommodated. May be.

  Even with such a valve timing changing device, the reaction force (arrow F3 in the figure) acting on the vane 27 when the vane 27 hits the advance angle restricting member 71 in the direction of the straight line L3 and the retard angle restricting member 72 are also affected. The direction (right direction in the figure) of the reaction force (arrow F4 in the figure) in the direction of the straight line L3 when acting on the vane 27 is the same. Therefore, in this valve timing changing device, the vane rotor 26 is shifted to the camshaft 11 in the direction in which the lock mechanisms 50A and 50B are close to the rotation center C2 of the vane rotor 26 in the direction of the straight line L3 (right direction in the drawing). It may be attached in the state. As a result, in the direction of the straight line L3, it acts on the vane 27 in the direction in which the fixing position of the vane rotor 26 shifts due to the reaction force F3 acting on the vane 27 when it strikes the advance angle restricting member 71 and on the vane 27 when it strikes the retard angle restricting member 72. The direction in which the fixed position of the vane rotor 26 is shifted by the reaction force F4 is the same direction (specific direction P2). In addition, the vane rotor 26 is attached to the camshaft 11 in a state of being offset in the specific direction P2 within the range of the gap between the vane rotor 26 and the center bolt 13.

  DESCRIPTION OF SYMBOLS 10 ... Internal combustion engine, 11 ... Cam shaft, 12 ... Oil pump, 13 ... Center bolt, 14 ... Oil pan, 15 ... Collar, 20 ... Valve timing change mechanism, 21 ... Housing, 22 ... Housing rotor, 23 ... Plate, 24 ... Plate, 25 ... Gear, 26 ... Vane rotor, 27 ... Vane, 28 ... Groove, 29 ... Advance side pressure chamber, 30 ... Delay side pressure chamber, 31 ... Fixed hole, 41 ... Supply oil passage, 41A ... Valve control Oil path, 41B ... Lock control oil path, 42 ... Drain oil path, 43 ... Advance angle side oil path, 44 ... Delay angle side oil path, 45 ... Unlock oil path, 50A, 50B ... Lock mechanism, 51 ... Lock pin 52 ... Accommodating hole, 53 ... Spring, 54 ... Lock hole, 55 ... Stepped portion, 58 ... Lock release chamber, 61, 71 ... Advance angle restricting member, 62, 72 ... Delay angle restricting member.

Claims (1)

A vane rotor having a vane integrally attached to the camshaft and projecting in a radial direction; and a housing connected to the crankshaft. The vane rotor is housed in the housing so as to be relatively rotatable, and the vane rotor with respect to the housing. A valve timing changing mechanism capable of changing the relative rotational phase of
An accommodation hole formed in the vane and extending in the axial direction of the camshaft, a lock pin accommodated in the accommodation hole, and a lock hole formed in the housing and into which a distal end portion of the lock pin can be inserted. Two locking mechanisms;
An advance angle regulating member provided inside the housing and against which the vane abuts when the relative rotational phase of the vane rotor is the most advanced phase;
A valve timing changing device provided in the housing and having a retard restriction member that the vane abuts when the relative rotational phase of the vane rotor is the most retarded phase;
The advance angle restricting member and the retard angle restricting member have two straight lines connecting the arrangement positions of the lock pins of the two lock mechanisms and the rotation center of the vane rotor as “L1”, are orthogonal to the straight line L1 and When two straight lines passing through the position where the lock pin is disposed are “L2” and a straight line connecting the intersection of the straight lines L2 and the rotation center of the vane rotor is “L3”, the vane is attached to the advance angle regulating member. The direction in the direction of the straight line L3 of the reaction force acting on the vane when hitting is the same as the direction in the direction of the straight line L3 of the reaction force acting on the vane when the vane hits the retard angle regulating member. Arranged in the form of
The valve timing change device, wherein the vane rotor is attached to the camshaft in a state where the lock pin is shifted in a direction close to the rotation center in the direction of the straight line L3.