JP6064873B2 - Valve timing adjustment device - Google Patents

Description

  The present invention relates to a valve timing adjusting device.

  A valve timing adjustment device comprising a housing that rotates integrally with a crankshaft of an internal combustion engine and a vane rotor that rotates integrally with a camshaft, and that adjusts the valve timing of the intake and exhaust valves by changing the rotational phase of the vane rotor relative to the housing. Are known. The rotational phase of the vane rotor is changed by supplying hydraulic oil to an advance chamber or a retard chamber in the housing.

  For example, in Patent Document 1, the hydraulic oil is supplied to the advance chamber and the retard chamber by a hydraulic control valve provided at the center of the vane rotor. The hydraulic control valve includes a sleeve having various ports and a spool that is movable in the axial direction within the sleeve. The sleeve is formed in a part of a bolt for fastening and fixing the vane rotor to the cam shaft.

US Pat. No. 7,389,756

  In Patent Document 1, the circumferential position of the port opened on the outer wall surface of the sleeve of the hydraulic control valve varies from product to product because the rotational position after tightening the bolt is not uniquely determined. Therefore, the circumferential position of the sleeve port does not always coincide with the circumferential position of the oil passage that opens on the inner wall surface of the vane rotor. Therefore, in order to communicate the port of the sleeve and the oil passage of the vane rotor, it is necessary to provide an annular groove on the outer wall of the sleeve or the inner wall of the vane rotor. Due to the presence of this annular groove, there are problems that the pressure loss in the oil passage is increased and the operation responsiveness is lowered, and that the physique in the radial direction of the valve timing adjusting device is increased.

  This invention is made | formed in view of the above-mentioned point, The objective is to provide the valve timing adjustment apparatus which can improve an operation responsiveness and can make the physique of radial direction small. is there.

The valve timing adjusting device according to the present invention includes a housing, a vane rotor, a sleeve, a spool, and a fixed rod. When one of the drive shaft and the driven shaft of the internal combustion engine is a first shaft and the other is a second shaft, the vane rotor can rotate integrally with the first shaft, and the housing can rotate integrally with the second shaft.
The sleeve is formed in a cylindrical shape so as to extend in the axial direction at the center portion of the vane rotor, and an advance port communicating with the advance chamber in the housing, and a retard angle communicating with the retard chamber in the housing Has a port.

  The fixed rod is formed integrally with the sleeve so as to protrude in the axial direction from the sleeve. The fixed rod is inserted into a receiving hole opened on the end surface of the first shaft, and the circumferential positions of the advance port and the retard port are opened in the inner wall surface of the vane rotor. The rotation in the circumferential direction is restricted by engaging with a protrusion protruding from the inner wall surface of the accommodation hole in a state matching the position.

  With this configuration, the port of the sleeve can be directly passed through the oil passage of the vane rotor. Therefore, it is not necessary to provide an annular groove on the outer wall of the sleeve or the inner wall of the vane rotor. Therefore, compared with the case where an annular groove is provided, the pressure loss in the oil passage can be reduced and the operation responsiveness can be improved. Moreover, the physique of the radial direction of a valve timing adjustment apparatus can be made small.

It is sectional drawing explaining schematic structure of the valve timing adjustment apparatus by 1st Embodiment of this invention. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is sectional drawing explaining schematic structure of the valve timing adjustment apparatus by 2nd Embodiment of this invention. It is the VV sectional view taken on the line of FIG. It is an external view of the shaft-shaped member seen from the arrow VI direction of FIG. It is an external view of the shaft-shaped member seen from the arrow VII direction of FIG. It is sectional drawing explaining schematic structure of the valve timing adjustment apparatus by 3rd Embodiment of this invention. It is the IX-IX sectional view taken on the line of FIG. It is an external view of the shaft-shaped member seen from the arrow X direction of FIG. It is an external view of the shaft-shaped member seen from the arrow XI direction of FIG.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In the embodiments, substantially the same components are denoted by the same reference numerals and description thereof is omitted.
<First Embodiment>
A valve timing adjusting device according to a first embodiment of the present invention is shown in FIG. The valve timing adjusting device 5 adjusts the valve timing of an intake valve (not shown) that opens and closes the camshaft 92 by rotating the camshaft 92 relative to the crankshaft 91 of the internal combustion engine 90. To the camshaft 92 in the driving force transmission system. The crankshaft 91 is a “drive shaft” described in the claims, and the camshaft 92 is a “driven shaft” described in the claims.

(overall structure)
First, the overall configuration of the valve timing adjusting device 5 will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1 and 2, the valve timing adjusting device 5 includes a housing 10, a vane rotor 20, and a hydraulic control valve 30.
The housing 10 includes a case 11 and a sprocket 12.
The case 11 has a cup shape, and forms a plurality of protrusions 13 that protrude radially inward from the outer shell. Each protrusion part 13 is arrange | positioned so that it may mutually space apart in the circumferential direction.

The sprocket 12 is provided on the opening end side of the case 11. The sprocket 12 is connected to the crankshaft 91 via a timing chain 93 that is hung on the outer teeth 15, and can rotate integrally with the crankshaft 91. The crankshaft 91 corresponds to a “second shaft” recited in the claims.
The case 11 and the sprocket 12 are arranged coaxially with the cam shaft 92, and a plurality of locations in the circumferential direction are integrally fixed by bolts 16. The cam shaft 92 corresponds to a “first shaft” recited in the claims.

The vane rotor 20 is provided in the housing 10, that is, inside the case 11, and forms a boss 21 and a plurality of vanes 22.
The boss 21 is fixed to the cam shaft 92 by a shaft-shaped member 33 and a nut 40 described later, and can rotate integrally with the cam shaft 92.

  The vane 22 protrudes radially outward from the boss 21, and partitions the internal space of the housing 10, that is, the space between the protruding portions 13 of the case 11, into an advance chamber 23 and a retard chamber 24. The retard chamber 24 is positioned in the rotation direction with respect to the vane 22, and the advance chamber 23 is positioned in the reverse rotation direction with respect to the vane 22. The radial gap between the advance chamber 23 and the retard chamber 24 is caused by a seal member 25 provided at the tip of the protrusion 13 of the case 11 and a seal member 26 provided at the tip of the vane 22. It is sealed.

The vane rotor 20 has an advance oil passage 27, a retard oil passage 28, and a supply oil passage 29. The advance oil passage 27 communicates with the advance chamber 23 and opens on the inner wall surface of the boss 21. The retard oil passage 28 communicates with the retard chamber 24 and opens in the inner wall surface of the boss 21. The supply oil passage 29 communicates with an oil pump 96 that is an external oil supply source via a supply oil passage 94 of the camshaft 92 and a supply oil passage 95 such as an engine block. It is open.
The vane rotor 20 rotates relative to the housing 10 by receiving the pressure of the hydraulic oil supplied to the advance chamber 23 or the retard chamber 24, and changes the rotation phase with respect to the housing 10 to the advance side or the retard side.

The hydraulic control valve 30 includes a sleeve 31 and a spool 32.
The sleeve 31 constitutes a part of the shaft-shaped member 33 and is formed in a cylindrical shape so as to extend in the axial direction at the center of the boss 21 of the vane rotor 20. The sleeve 31 has an advance port 34 that communicates with the advance oil passage 27, a retard port 35 that communicates with the retard oil passage 28, and a supply port 36 that communicates with the supply oil passage 29. have. The shaft member 33 will be described in detail later.

  The spool 32 can reciprocate in the axial direction inside the sleeve 31, and can selectively connect the ports of the sleeve 31 according to the axial position. Specifically, when the hydraulic fluid is supplied to the advance chamber 23 and discharged from the retard chamber 24, the spool 32 connects the supply port 36 and the advance port 34 while connecting the retard port 35. Is communicated with the external drain space through the inside of the spool 32. Further, when supplying the hydraulic oil to the retard chamber 24 and discharging the hydraulic oil from the advance chamber 23, the spool 32 connects the supply port 36 and the retard port 35 and connects the advance port 34 to the spool 32. Communicating with the outside drain space through the outside.

  A stopper plate 37 is fitted inside the end of the spool 32 opposite to the cam shaft 92, and the spool 32 is biased toward the stopper plate 37 by a spring 38. The axial position of the spool 32 is determined by the balance between the biasing force of the spring 38 and the pressing force by the linear solenoid 39 provided on the opposite side of the spool 32 with respect to the stopper plate 37.

  In the valve timing adjusting device 5 configured as described above, when the rotational phase is on the retard side with respect to the target value, the supply oil passage 29 and the advance chamber 23 are connected by the hydraulic control valve 30 while the retard angle is retarded. The chamber 24 is connected to the external drain space. As a result, the hydraulic oil is discharged from the retard chamber 24 while the hydraulic oil is supplied to the advance chamber 23, and the vane rotor 20 rotates relative to the housing 10 toward the advance side.

When the rotational phase is on the advance side with respect to the target value, the advance chamber 23 is connected to the external drain space while the supply oil passage 29 and the retard chamber 24 are connected by the hydraulic control valve 30. Accordingly, the hydraulic oil is discharged from the advance chamber 23 while the hydraulic oil is supplied to the retard chamber 24, and the vane rotor 20 rotates relative to the housing 10 toward the retard side.
When the rotational phase matches the target value, the advance chamber 23 and the retard chamber 24 are closed by the hydraulic control valve 30. As a result, the rotational phase is maintained.

(Feature configuration)
Next, a characteristic configuration of the valve timing adjusting device 5 will be described with reference to FIGS.
The shaft-shaped member 33 forms a sleeve 31 and a fixed rod 50.

  As shown in FIG. 1, the fixed rod 50 is integrally formed with the sleeve 31 so as to protrude from the sleeve 31 in the axial direction, and is inserted into the accommodation hole 51 that opens at the end surface of the cam shaft 92. In the present embodiment, the accommodation hole 51 includes a large-diameter hole portion 52 that opens to the end surface of the cam shaft 92 and a small-diameter hole portion 53 that opens to the bottom surface of the large-diameter hole portion 52. The end of the fixed rod 50 is fitted in the small diameter hole 53 of the accommodation hole 51. A large-diameter hole portion 52 of the accommodation hole 51 defines a supply oil passage 94 between the fixing rod 50 and the supply hole 94.

  As shown in FIGS. 1 and 3, the cam shaft 92 has a through hole 54 that penetrates in a direction orthogonal to the axis 65 of the cam shaft 92 at an axial position that coincides with the small-diameter hole portion 53 of the accommodation hole 51. ing. A pin 55 is press-fitted and fixed in the through hole 54. The end of the fixed rod 50 has a fitting hole 56 into which the pin 55 is fitted. In the present embodiment, a drain oil passage 57 penetrating in the axial direction is formed inside the fixed rod 50, and an intermediate portion of the pin 55 is a constriction 58 for securing a flow passage area of the drain oil passage 57. Is forming.

  As shown in FIGS. 1 and 2, the fixed rod 50 is a supply oil passage in which circumferential positions of the supply port 36, the advance port 34, and the retard port 35 that open on the outer wall surface of the sleeve 31 open on the inner wall surface of the vane rotor 20. 29, a pin 55 protruding from the inner wall surface of the small-diameter hole portion 53 of the receiving hole 51 is fitted in a state that coincides with the circumferential positions of the advance oil passage 27 and the retard oil passage 28 as shown in FIGS. By engaging with the hole 56, circumferential rotation and axial movement are restricted.

  The sleeve 31 protrudes from the vane rotor 20 on the side opposite to the fixed rod 50. A screw 59 is formed on the outer wall of the sleeve 31 protruding from the vane rotor 20. A nut 40 is fastened to the screw 59 of the sleeve 31. The nut 40 is fixed with a washer 61, a vane rotor 20, and a washer 62 sandwiched between the cam shaft 92.

(effect)
As described above, the valve timing adjusting device 5 according to the first embodiment includes the fixed rod 50 formed integrally with the sleeve 31 so as to protrude in the axial direction from the sleeve 31. The fixing rod 50 is inserted into a receiving hole 51 that opens on the end surface of the cam shaft 92, and the circumferential positions of the supply port 36, the advance port 34, and the retard port 35 that open on the outer wall surface of the sleeve 31 are A pin 55 protruding from the inner wall surface of the small-diameter hole portion 53 of the accommodation hole 51 is in contact with the fitting hole 56 in a state that coincides with the circumferential positions of the supply oil passage 29, the advance oil passage 27 and the retard oil passage 28 that open to the wall surface. By engaging, rotation in the circumferential direction is restricted.

  With this configuration, the ports 34, 35, and 36 of the sleeve 31 can be directly passed through the oil passages 27, 28, and 29 of the vane rotor 20. Therefore, it is not necessary to provide an annular groove on the outer wall of the sleeve 31 or the inner wall of the vane rotor 20 as in the prior art. Therefore, compared with the conventional form which provides an annular groove, the pressure loss in an oil passage can be reduced and the operation responsiveness can be improved. Moreover, the physique of the radial direction of the valve timing adjustment apparatus 5 can be made small.

In the first embodiment, the fixed rod 50 is restricted from moving in the axial direction by the pin 55 engaging with the fitting hole 56. The sleeve 31 forms a screw 59 on the outer wall of the portion protruding from the vane rotor 20. The vane rotor 20 is clamped and fixed between the nut 40 and the cam shaft 92 that are fastened to the screw 59 of the sleeve 31.
Therefore, according to the first embodiment, the circumferential position of the sleeve 31 relative to the vane rotor 20 can be arbitrarily determined while using the sleeve 31 itself as a fastening member.

In the first embodiment, the cam shaft 92 has a through-hole 54 that penetrates in a direction orthogonal to the axis 65 of the cam shaft 92 at an axial position that coincides with the small-diameter hole 53 of the accommodation hole 51. . A pin 55 is press-fitted and fixed in the through hole 54. The end of the fixed rod 50 has a fitting hole 56 into which the pin 55 is fitted.
Therefore, the pin 55 can support the tensile load acting on the fixed rod 50 by tightening the nut 40 while fixing the circumferential position of the sleeve 31 with respect to the vane rotor 20 at an arbitrary position.

Second Embodiment
A valve timing adjusting device 70 according to a second embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 4 and 5, in the second embodiment, the camshaft 71 has a pair of through holes 72 that penetrates radially outward from the small diameter hole portion 53 of the accommodation hole 51. A pin 73 is press-fitted and fixed to the through-hole 72 so as to protrude into the small-diameter hole 53 from the inner wall surface of the small-diameter hole 53 of the accommodation hole 51.

  As shown in FIGS. 4 to 7, the end of the fixed rod 75 of the shaft-like member 74 has a recess in the outer wall into which the pin 73 is inserted. In the present embodiment, the concave portion includes an introduction groove 77 that extends in the axial direction from the end surface 76 of the fixed rod 75 toward the sleeve 31, and a circumferential groove 78 that extends in the circumferential direction from the introduction groove 77. Yes.

  When the fixing rod 75 is assembled to the camshaft 71, the pin 73 is inserted into the small-diameter hole 53 of the receiving hole 51 along the introduction groove 77, and then rotated so that the pin 73 follows the circumferential groove 78. It is done. The fixing rod 75 is tightened with the nut 40 while the axial movement is restricted by the end 79 of the circumferential groove 78 on the opposite side of the connecting portion with the introduction groove 77 engaging the pin 73. Rotation in the direction is restricted.

  In the second embodiment, the fixed rod 75 has the supply port 36 that opens on the outer wall surface of the sleeve 31, the circumferential position of the advance port 34 and the retard port 35, the supply oil passage 29 that opens on the inner wall surface of the vane rotor 20, A pin 73 protruding from the inner wall surface of the small-diameter hole 53 of the receiving hole 51 is engaged with the end 79 of the circumferential groove 78 in a state where it matches the circumferential position of the angular oil passage 27 and the retard oil passage 28. The rotation of the nut 40 in the tightening direction is restricted.

  Therefore, according to the second embodiment, when the nut 40 is tightened, the ports 34, 35, 36 of the sleeve 31 can be directly passed through the oil passages 27, 28, 29 of the vane rotor 20. Therefore, as in the first embodiment, it is not necessary to provide an annular groove on the outer wall of the sleeve 31 or the inner wall of the vane rotor 20 as in the prior art. Therefore, compared with the conventional form which provides an annular groove, the pressure loss in an oil passage can be reduced and the operation responsiveness can be improved. Moreover, the physique of the radial direction of the valve timing adjustment apparatus 70 can be made small.

In the second embodiment, the axial movement of the fixed rod 75 is restricted by the pin 73 engaging with the end 79 of the circumferential groove 78.
Therefore, according to the second embodiment, as in the first embodiment, the circumferential position of the sleeve 31 relative to the vane rotor 20 can be arbitrarily determined while using the sleeve 31 itself as a fastening member. According to the second embodiment, the tensile load acting on the fixed rod 75 by tightening the nut 40 can be supported by the pin 73.

<Third Embodiment>
A valve timing adjusting device 80 according to a third embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 8-11, the edge part of the fixed rod 82 of the shaft-shaped member 81 has the recessed part in which the pin 73 is inserted in an outer wall. In the present embodiment, the recess includes an introduction groove 85 extending in the axial direction from the end face 84 of the fixed rod 82 toward the sleeve 31, a circumferential groove 86 extending in the circumferential direction from the introduction groove 85, and a circumferential groove. And an axial groove 87 extending in the axial direction from 86 to the opposite side of the sleeve 31.

  When the fixed rod 82 is assembled to the cam shaft 71, the pin 73 is inserted into the small-diameter hole portion 53 of the receiving hole 51 along the introduction groove 85, and the pin 73 is rotated so as to follow the circumferential groove 86. After that, the pin 73 is moved in the axial direction along the axial groove 87. The fixed rod 82 is restricted from axial movement toward the sleeve 31 by engaging the pin 73 with the end 88 of the axial groove 87 opposite to the connection with the circumferential groove 86. However, circumferential rotation is restricted.

  In the third embodiment, the fixed rod 82 is configured so that the circumferential positions of the supply port 36, the advance port 34, and the retard port 35 that open on the outer wall surface of the sleeve 31 are the supply oil passage 29 that opens on the inner wall surface of the vane rotor 20. The pin 73 protruding from the inner wall surface of the small-diameter hole portion 53 of the receiving hole 51 engages with the end portion 88 of the axial groove 87 in a state where it matches the circumferential position of the angular oil passage 27 and the retarded oil passage 28. , Circumferential rotation is restricted.

  Therefore, according to the third embodiment, the ports 34, 35, 36 of the sleeve 31 can be directly passed through the oil passages 27, 28, 29 of the vane rotor 20. Therefore, as in the first embodiment, it is not necessary to provide an annular groove on the outer wall of the sleeve 31 or the inner wall of the vane rotor 20 as in the prior art. Therefore, compared with the conventional form which provides an annular groove, the pressure loss in an oil passage can be reduced and the operation responsiveness can be improved. Moreover, the physique of the radial direction of the valve timing adjustment apparatus 80 can be made small.

In the third embodiment, the fixed rod 82 is restricted from moving in the axial direction toward the sleeve 31 when the pin 73 engages with the end 88 of the axial groove 87.
Therefore, according to the third embodiment, as in the first embodiment, the circumferential position of the sleeve 31 relative to the vane rotor 20 can be arbitrarily determined while using the sleeve 31 itself as a fastening member. Further, according to the third embodiment, the tensile load acting on the fixed rod 82 by tightening the nut 40 can be supported by the pin 73.

<Other embodiments>
In another embodiment of the present invention, the pin may be press-fitted into the fixed rod without being press-fitted into the camshaft. Further, the pin may be fixed to one or both of the cam shaft and the fixed rod by a method other than press fitting.
In another embodiment of the present invention, the protrusion protruding from the inner wall surface of the accommodation hole of the cam shaft is not limited to the pin, and may be formed from the same member as the cam shaft.

In another embodiment of the present invention, the drain oil passage may not be formed inside the fixed rod.
In 1st Embodiment, the pin was provided so that the fixed rod might be penetrated. On the other hand, in another embodiment of the present invention, the pin may not penetrate the fixed rod.
In the second embodiment and the third embodiment, two pins are provided, and the concave portions of the fixed rod are formed in two places. In contrast, in other embodiments of the present invention, there may be one, three or more pins. Moreover, in other embodiment of this invention, the recessed part of a fixed rod may be formed in one place or three places or more.

In another embodiment of the present invention, the accommodation hole of the camshaft may not be stepped.
In another embodiment of the present invention, the vane rotor may be rotatable integrally with the crankshaft, and the housing may be rotatable integrally with the camshaft.
In another embodiment of the present invention, the sleeve may have a port in addition to the supply port, the advance port, and the retard port. The vane rotor may have an oil passage in addition to the supply oil passage, the advance oil passage, and the retard oil passage.
In another embodiment of the present invention, the vane rotor does not have a supply oil path, and hydraulic oil may be supplied to the supply port of the sleeve from a supply oil path of another member such as a cam shaft.

In other embodiments of the present invention, the number of supply ports may be one, or three or more. Also, the number of advance ports may be two or less, or four or more. Further, the number of retard ports may be 2 or less, or 4 or more.
In another embodiment of the present invention, the valve timing adjusting device may adjust the valve timing of the exhaust valve of the internal combustion engine.
The present invention is not limited to the embodiments described above, and can be implemented in various forms without departing from the spirit of the invention.

5, 70, 80 ... Valve timing adjusting device 10 ... Housing 23 ... Advance chamber 24 ... Delay chamber 27 ... Advance oil passage 28 ... Delay oil passage 20 ...・ Vane rotor 34 ... Advance port 35 ... Delay port 31 ... Sleeve 32 ... Spool 51 ... Accommodating hole 55, 73 ... Pin (protrusion)
50, 75, 82 ... fixed rods 92, 71 ... cam shaft (driven shaft, first shaft)

Claims (6)

At least one of an intake valve and an exhaust valve provided in a driving force transmission system for transmitting a driving force from the driving shaft (91) to the driven shaft (92, 71) of the internal combustion engine (90) and driven to open and close by the driven shaft. A valve timing adjusting device (5, 70, 80) for adjusting valve timing,
When one of the drive shaft and the driven shaft is a first axis and the other is a second axis,
A housing (10) provided coaxially with the first shaft at the end of the first shaft and rotatable integrally with the second shaft;
Provided in the housing, rotatable integrally with the first shaft, defining an advance chamber (23) and a retard chamber (24) in the housing, and communicating with the advance chamber A vane rotor (20) having an advance oil passage (27) and a retard oil passage (28) communicating with the retard chamber;
An advance port (34) formed in a cylindrical shape so as to extend in the axial direction at the center of the vane rotor, and communicated with the advance oil passage, and a retard port communicated with the retard oil passage A sleeve (31) having (35);
A spool (32) capable of reciprocating in the axial direction within the sleeve and capable of opening and closing the advance port and the retard port according to an axial position;
The sleeve is formed integrally with the sleeve so as to protrude in the axial direction, is inserted into a receiving hole (51) that opens on the end surface of the first shaft, and the circumferential positions of the advance port and the retard port are: The circumferential direction by engaging with protrusions (55, 73) protruding from the inner wall surface of the receiving hole in a state coincident with the circumferential position of the advance oil passage and the retard oil passage opened on the inner wall surface of the vane rotor. Fixed rods (50, 75, 82) whose rotation is restricted,
A valve timing adjusting device comprising: The sleeve protrudes on the opposite side of the vane rotor from the fixed rod;
A screw (59) is formed on an outer wall of a portion of the sleeve protruding from the vane rotor,
The fixed rod is restricted from moving in the axial direction toward the sleeve by engaging with the protrusion,
The valve timing adjusting device according to claim 1, further comprising a nut (40) that is fastened to the screw of the sleeve and sandwiches and fixes the vane rotor with the first shaft. . The first shaft (71) has a through hole (72) penetrating radially outward from the accommodation hole,
The protrusion is a pin (73) inserted into the through hole of the first shaft,
The valve timing adjusting device according to claim 2, wherein the fixed rod (75, 82) has a recess (77, 78, 85, 86, 87) into which the pin is inserted in an outer wall. (70, 80). The concave portion of the fixed rod (75) includes an introduction groove (77) extending in the axial direction from the end surface (76) of the fixed rod toward the sleeve, and a circumferential groove extending from the introduction groove in the circumferential direction. (78) and
The fixing rod is tightened with the nut while the axial movement is restricted by engaging an end (79) of the circumferential groove opposite to the connecting portion with the introduction groove with the projection. 4. The valve timing adjusting device (70) according to claim 3, wherein rotation in the direction is restricted. The recessed portion of the fixed rod (82) includes an introduction groove (85) extending in the axial direction from the end surface (84) of the fixed rod toward the sleeve, and a circumferential groove extending from the introduction groove in the circumferential direction. (86) and an axial groove (87) extending axially from the circumferential groove on the opposite side of the sleeve,
The fixed rod is restricted from moving in the axial direction to the sleeve side by engaging an end (88) of the axial groove on the opposite side of the connecting portion with the circumferential groove. The valve timing adjusting device (80) according to claim 3, wherein rotation in the circumferential direction is restricted. The first shaft (92) has a through hole (54) penetrating in a direction orthogonal to the axis (65) of the first shaft,
The protrusion is a pin (55) inserted into the through hole of the first shaft,
The valve timing adjusting device (5) according to claim 1 or 2, wherein the fixed rod (50) has a fitting hole (56) into which the pin is fitted.

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