JP2015203366A - Valve timing adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve timing adjustment device with a filter which can be easily manufactured with press working.SOLUTION: A filter 90 is constituted by a metal plate 70, a metal plate 71 and a metal plate 72 laid one on top of another in the thickness direction. The metal plate 72 has a plurality of inlet holes 83 to be communicated with a supply oil path 29. The metal plate 70 has a plurality of outlet holes 85 distant from the inlet holes 83 in view from the thickness direction. The metal plate 71 held between the metal plate 70 and the metal plate 72 has intermediate holes 87 each connecting one inlet hole 83 to one outlet hole 85, and it is thinner than a minimum opening width W2 of each of the inlet hole 83 and the outlet hole 85. Thus, in the filter 90, a flow path 91 is formed ranging from the inlet holes 83 through the intermediate holes 87 to the outlet holes 85. A flow path width W1 of a minute flow path part 92 at an intermediate site of the flow path 91 corresponds to a thickness t1 of the metal plate 71 and smaller than the minimum opening width W2.

Description

  The present invention relates to a valve timing adjusting device.

The hydraulic valve timing adjusting device adjusts the valve timing of the intake and exhaust valves of the internal combustion engine by supplying hydraulic oil to the hydraulic chamber in the housing and causing the vane rotor to rotate relatively. In the valve timing adjusting device disclosed in Patent Document 1, the hydraulic oil is supplied to the hydraulic chamber by an oil passage switching valve provided at the center of the vane rotor.
By the way, if the hydraulic oil in the hydraulic chamber flows backward to the supply oil passage during the relative rotation of the vane rotor, the responsiveness of the rotational phase control of the vane rotor is lowered. On the other hand, in Patent Document 1, a check valve is provided in the supply oil passage to prevent the hydraulic oil in the hydraulic chamber from flowing back into the supply oil passage.

JP 2013-151923 A

  The internal combustion engine is provided with a cartridge filter for capturing foreign matter in the hydraulic oil pumped by the oil pump. However, there is a concern that the above-described check valve malfunctions due to fine foreign matters that cannot be captured by the cartridge filter or foreign matters downstream from the cartridge filter. As a countermeasure against this, it is necessary to newly provide a filter capable of capturing finer foreign matters than the cartridge filter upstream of the check valve.

  This new filter can be manufactured at low cost if it is made of a punching mesh that can be made by pressing. However, in order to reduce the pressure loss due to the contraction of the oil passage as much as possible, to make a small hole enough to capture the fine foreign matter that cannot be captured by the cartridge filter, it is not possible to open the hole at a high density at once. This is difficult due to the strength of the press punch.

  The present invention has been made in view of the above points, and an object thereof is to provide a valve timing adjusting device including a filter that can be easily manufactured by press working.

  The valve timing adjusting device according to the present invention includes a housing, a vane rotor, and an oil passage switching valve. 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 housing can rotate integrally with the first shaft, and the vane rotor can rotate integrally with the second shaft. The vane rotor has a second supply oil passage that can communicate with an external first supply oil passage. The oil passage switching valve has an advance port and a retard port that communicate with the advance chamber and the retard chamber that the vane rotor partitions in the housing, and a supply port that communicates with the second supply oil passage. Yes.

  The valve timing adjusting device further includes a check valve and a filter. The check valve is provided inside the vane rotor or between the vane rotor and the second shaft, and allows the hydraulic oil to flow from the first supply oil passage to the supply port, and from the supply port to the first supply oil passage. Block the flow of hydraulic oil. The filter is provided between the check valve and the second shaft.

  The filter is composed of one end plate, one or a plurality of intermediate plates, and the other end plate stacked in the thickness direction. The one end plate has a plurality of inlet holes that are located on the second shaft side and can communicate with the first supply oil passage. The other end plate is located on the check valve side, and has a plurality of outlet holes that communicate with the second supply oil passage and are separated from the inlet holes when viewed from the thickness direction. The intermediate plate is sandwiched between the one end plate and the other end plate, and has a plurality of intermediate holes that are communicated with one inlet hole and one outlet hole. The thickness is small compared to the opening width.

  By configuring in this way, a flow path from the inlet hole to the outlet hole through the intermediate hole is formed in the filter. A minute channel portion is partitioned and formed at the intermediate portion of the channel by the side surface of the one end plate on the side of the intermediate plate, the side surface of the other end plate on the side of the intermediate plate, and the inner wall surface of the intermediate hole. The flow path width of the micro flow path portion matches the thickness of the intermediate plate and is narrower than the minimum opening width of the inlet hole and the outlet hole. Therefore, while the inlet hole, the intermediate hole, and the outlet hole are opened by pressing, a flow path narrower than the hole opened by the pressing can be provided. In other words, the hole vacated by the press work does not have to be a minute hole enough to capture minute foreign matters that cannot be captured by the cartridge filter. Therefore, the filter can be easily manufactured by press working.

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 sectional drawing which expands and shows the III part of FIG. It is a figure which shows the 1st metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 2nd metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 3rd metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 4th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 5th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 6th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 7th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 8th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 9th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 10th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 11th metal plate which comprises the laminated part of the vane rotor of FIG. It is a figure which shows the 12th metal plate which comprises the laminated part of the vane rotor of FIG. It is sectional drawing which expands and shows the location corresponding to one supply oil path among the XVI-XVI line cross sections of FIG. It is the XVII-XVII line cross section of FIG. It is sectional drawing which expands and shows the location corresponding to the other supply oil path among the XVIII-XVIII line cross sections of FIG. It is the XIX-XIX sectional view taken on the line of FIG. It is a figure which shows the 10th metal plate which comprises the laminated part of the vane rotor of the valve timing adjustment apparatus by 2nd Embodiment of this invention. It is a figure which shows the 12th metal plate which comprises the laminated part of the vane rotor of the valve timing adjustment apparatus by 2nd Embodiment of this invention. It is a figure which shows the 10th metal plate which comprises the laminated part of the vane rotor of the valve timing adjustment apparatus by 3rd Embodiment of this invention. It is a figure which shows the 11th metal plate which comprises the laminated part of the vane rotor of the valve timing adjustment apparatus by 3rd Embodiment of this invention. It is a figure which shows the 12th metal plate which comprises the laminated part of the vane rotor of the valve timing adjustment apparatus by 3rd Embodiment of this invention. It is sectional drawing of the location corresponding to one supply oil path among the filters of the vane rotor of the valve timing adjustment apparatus by 4th Embodiment of this invention. It is sectional drawing of the location corresponding to the other supply oil path among the filters of the vane rotor of the valve timing adjustment apparatus by 4th Embodiment of this invention.

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 cam shaft 202 by rotating the cam shaft 202 relative to the crank shaft 201 of the internal combustion engine 200. To the camshaft 202 is provided in the driving force transmission system. The crankshaft 201 is a “drive shaft” described in the claims, and the camshaft 202 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 an oil passage switching 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 and has a through hole 14 through which the cam shaft 202 is inserted. The sprocket 12 is connected to the crankshaft 201 via a timing chain 203 that is hung on the outer teeth 15 and can rotate integrally with the crankshaft 201.
The case 11 and the sprocket 12 are arranged coaxially with the cam shaft 202, and a plurality of locations in the circumferential direction are integrally fixed by bolts 16.

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 202 by a sleeve bolt 31 described later, and can rotate integrally with the cam shaft 202.

  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 206 which is an external oil supply source via a supply oil passage 204 of the camshaft 202 and a supply oil passage 205 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 oil passage switching valve 30 includes a sleeve bolt 31 and a spool 32.
The sleeve bolt 31 is inserted into the vane rotor 20 from the side opposite to the cam shaft 202 with respect to the vane rotor 20 and screwed into the cam shaft 202. Further, the sleeve bolt 31 forms a sleeve 35 located inside the vane rotor 20 between the head portion 33 and the screw portion 34.

  The sleeve 35 is formed in a cylindrical shape so as to extend in the axial direction at the center of the vane rotor 20. The sleeve 35 has an advance port 36 that communicates with the advance oil passage 27, a retard port 37 that communicates with the retard oil passage 28, and a supply port 38 that communicates with the supply oil passage 29. have. In the present embodiment, the sleeve 35 has annular grooves 41, 42, 43 aligned in the axial direction, and the advance port 36, the supply port 38, and the retard port 37 are the bottom surfaces of the annular grooves 41, 42, 43. Is open.

  The spool 32 can reciprocate in the axial direction inside the sleeve 35 and can selectively connect the ports of the sleeve 35 according to the axial position. Specifically, when the rotation phase of the vane rotor 20 with respect to the housing 10 is changed to the advance side, the spool 32 connects the supply port 38 and the advance port 36 and passes the retard port 37 through the inside of the spool 32. Communicate with the external drain space. Further, when the rotation phase of the vane rotor 20 with respect to the housing 10 is changed to the retard side, the spool 32 connects the supply port 38 and the retard port 37 and connects the advance port 36 to the external drain through the outside of the spool 32. Communicate with space.

  A stopper plate 44 is fitted into the opening inside the head 33 of the sleeve bolt 31, and the spool 32 is urged toward the stopper plate 44 by a spring 45. The axial position of the spool 32 is determined by a balance between the biasing force of the spring 45 and the pressing force by the linear solenoid 46 provided on the opposite side of the spool 32 with respect to the stopper plate 44.

  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 oil passage switching 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.

Further, when the rotational phase is on the advance side from 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 oil passage switching 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 oil passage switching valve 30. As a result, the rotational phase is maintained.

[Feature structure]
Next, a characteristic configuration of the valve timing adjusting device 5 will be described with reference to FIGS.
As shown in FIGS. 2 and 3, the vane rotor 20 includes a cylindrical laminated portion 50 formed of a plurality of metal plates laminated in the axial direction, and an outer wall surface of the laminated portion 50 as well as four vanes. The mold part 51 which forms 22 is provided. The stacked unit 50 corresponds to a “stacked body” described in the claims.

  As shown in FIG. 2, the laminated portion 50 includes a housing hole 53 that houses the lock pin 52, three press-fit holes 55 into which the regulation pins 54 are press-fit, and a sleeve 35 that fits. And a hole 56. In this embodiment, the accommodation hole 53 and the three press-fit holes 55 have the same inner diameter and are formed at equal intervals in the circumferential direction.

  The lock pin 52 can be fitted into a fitting hole (not shown) of the sprocket 12 and locks the rotational phase of the vane rotor 20 with respect to the housing 10 by fitting into the fitting hole. The restriction pin 54 is inserted into an arc-shaped elongated hole (not shown) included in the case 11 and the sprocket 12, and changes the rotational phase in a range from a position where it abuts to one end of the elongated hole to a position where it abuts the other end. regulate.

  As illustrated in FIG. 3, the stacked unit 50 includes a metal plate 61, a metal plate 62, a metal plate 63, a metal plate 64, a metal plate 65, a metal plate 66, a metal plate 67, a metal plate 68, a metal plate 69, and a metal plate. 67, a metal plate 70, a metal plate 71, a metal plate 72, and a metal plate 67 are laminated in that order in the axial direction.

  Hereinafter, when the metal plates 61 to 72 are not particularly distinguished, they are simply referred to as “metal plates”. Further, “outside” means the outside in the radial direction of the laminated portion 50, and “inside” means the inside in the radial direction of the laminated portion 50.

As shown in FIG. 4, the metal plate 61 includes an accommodation hole 53, three press-fitting holes 55, and four first retarding notches 73 extending inward from the outer edge. The first retard notch 73 constitutes a part of the retard oil passage 28.
As shown in FIG. 5, the metal plate 62 includes an accommodation hole 53, three press-fitting holes 55, and four retard angle through holes 74 that constitute a part of the retard oil passage 28. Yes. The retarding angle through hole 74 is formed at a position coincident with the inner end of the first retarding notch 73 when viewed from the thickness direction.

  As shown in FIG. 6, the metal plate 63 has an accommodation hole 53, three press-fitting holes 55, and four second notching portions 75 for extending from the inner edge to the outside. The second retard notch 75 constitutes a part of the retard oil passage 28. The outer end of the second retarding cutout 75 is formed at a position that coincides with the retarding hole 74 when viewed from the axial direction.

As shown in FIG. 7, the metal plate 64 has an accommodation hole 53 and three press-fitting holes 55.
As shown in FIG. 8, the metal plate 65 includes an accommodation hole 53, three press-fitting holes 55, and two supply notches 76 extending outward from the inner edge. The supply cutout 76 constitutes a part of the supply oil passage 29.

  As shown in FIG. 9, the metal plate 66 includes an accommodation hole 53, three press-fitting holes 55, two supply cutouts 76, and two circumferential cutouts extending from the supply cutout 76 in the circumferential direction. And a notch 77. Further, the metal plate 66 forms two reed valves 78 extending from the edge of the circumferential cutout 77 into the supply cutout 76. The reed valve 78 can open and close a supply through hole 79 of a metal plate 67 described later.

  When the reed valve 78 receives the flow of hydraulic oil from the supply oil passage 204 side, the reed valve 78 bends toward the supply notch 76 side of the metal plate 65 to open the supply through hole 79 of the metal plate 67 and supply from the supply oil passage 204. Allow fluid to flow to port 37. The reed valve 78 returns to its original position when the flow of hydraulic oil from the supply port 37 side is received, closes the supply through hole 79 of the metal plate 67, and the hydraulic oil from the supply port 37 to the supply oil passage 204. Block the distribution of The reed valve 78 is a “check valve” described in the claims.

  As shown in FIG. 10, the metal plate 67 has a housing hole 53, three press-fitting holes 55, and two supply through holes 79 constituting a part of the supply oil passage 29. The supply through-hole 79 is formed at a position that coincides with the outer end of the supply notch 76 when viewed from the thickness direction and can be closed by the tip of the reed valve 78.

As shown in FIG. 11, the metal plate 68 includes an accommodation hole 73, three press-fitting holes 75, and four first advance angle notches 81 extending inward from the outer edge. The first advancement notch 81 forms a part of the advancement oil passage 27. As shown in FIG. 12, the metal plate 69 includes an accommodation hole 53, three press-fit holes 55, and an outer edge from the inner edge. And four second advance angle cutouts 82 extending in the vertical direction. The second advance cutout 82 constitutes a part of the advance oil passage 27. The outer end of the second advance cutout 82 is formed at a position that coincides with the inner end of the first advance cutout 81 when viewed from the axial direction.

  As shown in FIG. 13, the metal plate 72 communicates with the accommodation hole 53, the three press-fitting holes 55, the supply oil passage 29, and the communication hole that can communicate with the supply oil passage 204 through the supply oil passage 29. A plurality of inlet holes 83 and 84 are provided. The inlet holes 83 and 84 are rectangular long holes extending in a predetermined direction. The inlet hole 83 is formed at a position corresponding to one of the two supply passages 29 included in the stacked portion 50. The inlet hole 84 is formed at a position corresponding to the other supply passage 29-2 of the two supply passages 29 included in the stacked portion 50.

  As shown in FIG. 14, the metal plate 70 has a housing hole 53, three press-fit holes 55, and a plurality of outlet holes 85 and 86 that are through holes communicating with the supply oil passage 29. The outlet holes 85 and 86 are rectangular long holes extending in the same direction as the inlet holes 83 and 84. As shown in FIG. 16, the outlet hole 85 is a position corresponding to the supply passage 29-1, and is formed at a position away from the inlet hole 83 when viewed from the thickness direction. As shown in FIG. 18, the outlet hole 86 is a position corresponding to the supply passage 29-2 and is formed at a position away from the inlet hole 84 when viewed from the thickness direction.

  As shown in FIG. 3, the metal plate 71 is sandwiched between the metal plate 70 and the metal plate 72. As shown in FIG. 15, the metal plate 71 has an accommodation hole 53, three press-fitting holes 55, and a plurality of intermediate holes 87 and 88. The intermediate holes 87 and 88 are rectangular long holes extending in the same direction as the inlet holes 83 and 84. The intermediate hole 87 is formed at a position overlapping with both the one inlet hole 83 and the one outlet hole 85 when viewed from the thickness direction as shown in FIG. 16, and as shown in FIG. One outlet hole 85 is connected. The intermediate hole 88 is formed at a position overlapping with both the one inlet hole 84 and the one outlet hole 86 when viewed from the thickness direction as shown in FIG. 18, and with the one inlet hole 84 as shown in FIG. One outlet hole 86 is connected.

  The metal plate 70, the metal plate 71, and the metal plate 72 constitute a filter 90 that can capture foreign matter in the hydraulic oil flowing through the supply oil passage 29. The metal plate 72 corresponds to the “one end plate” described in the claims, the metal plate 70 corresponds to the “other end plate” described in the claims, and the metal plate 71 corresponds to the claims. This corresponds to the “intermediate plate” described. As shown in FIGS. 17 and 18, the filter 90 has a flow path 91 extending from the inlet holes 83 and 84 to the outlet holes 85 and 86 through the intermediate holes 87 and 88.

  At a middle portion of the flow channel 91, a micro flow channel portion 92 is formed that is partitioned by the side surface of the metal plate 72, the side surface of the metal plate 70, and the inner wall surfaces of the intermediate holes 87 and 88 of the metal plate 71. . The channel width W1 of the minute channel portion 92 matches the thickness t1 of the metal plate 71. The thickness t1 of the metal plate 71 is thinner than the minimum opening width W2 of the inlet holes 83 and 84 and the outlet holes 85 and 86. In the present embodiment, for example, the minimum opening width W2 is 0.6 mm, and the thickness t1 is 0.2 mm. Further, the metal plate 70 and the metal plate 72 have the same thickness as the metal plate 71. The thickness t1 is set to, for example, 0.2 mm, which is the upper limit value of foreign matter that can be bitten between the spool 32 of the oil passage switching valve 30 and the sleeve 35. The filter 90 can capture finer foreign matters than the cartridge filter provided in the internal combustion engine 200 immediately upstream of the reed valve 78.

  When the metal plate 72 of FIG. 13 is rotated 180 degrees around the axis AX1, the outer edge of the metal plate 70 and the outer edge of the metal plate 72 coincide with each other when viewed from the thickness direction, and the inlet holes 83 and 84 and the outlet hole 86 are aligned. , 85 matches. That is, the metal plate 72 and the metal plate 70 are the same member.

[effect]
As described above, in the first embodiment, the valve timing adjusting device 5 includes the reed valve 78 and the filter 90. The reed valve 78 is provided inside the vane rotor 20, allows the hydraulic oil to flow from the supply oil path 204 to the supply port 38, and prevents the hydraulic oil from flowing from the supply port 38 to the supply oil path 204. The filter 90 is provided between the reed valve 78 and the cam shaft 202.

  The filter 90 includes a metal plate 70, a metal plate 71, and a metal plate 72 that are laminated in the thickness direction. The metal plate 72 is located on the camshaft 202 side and has a plurality of inlet holes 83 and 84 that can communicate with the supply oil passage 29. The metal plate 70 is located on the reed valve 78 side and has a plurality of outlet holes 85 and 86 that are separated from the inlet holes 83 and 84 when viewed from the thickness direction. The metal plate 71 has intermediate holes 87 and 88 that are sandwiched between the metal plate 70 and the metal plate 72 and connect one inlet hole 83 and one outlet hole 85. Further, the thickness t1 of the metal plate 71 is thinner than the minimum opening width W2 of the inlet holes 83 and 84 and the outlet holes 85 and 86.

  With this configuration, the filter 90 is formed with a flow path 91 from the inlet holes 83 and 84 to the outlet holes 85 and 86 through the intermediate holes 87 and 88. The channel width W1 of the minute channel portion 92 formed in the middle of the channel 91 matches the thickness t1 of the metal plate 71, and the minimum opening width W2 of the inlet holes 83 and 84 and the outlet holes 85 and 86 Narrower than that. Therefore, while the inlet holes 83 and 84, the intermediate holes 87 and 88, and the outlet holes 85 and 86 are opened by press working, a flow path narrower than the hole opened by the press working can be provided. In other words, the hole vacated by the press work does not have to be a minute hole enough to capture minute foreign matters that cannot be captured by the cartridge filter. Therefore, the filter 90 can be easily manufactured by press working.

In the first embodiment, the inlet holes 83 and 84, the outlet holes 85 and 86, and the intermediate holes 87 and 88 are long holes extending in a predetermined direction.
Therefore, the strength of the press punch corresponding to the through holes 83 to 88 can be increased, and the productivity is improved.

In the first embodiment, when the metal plate 72 is rotated 180 degrees around the axis AX1, the outer edge of the metal plate 70 and the outer edge of the metal plate 72 coincide with each other when viewed from the thickness direction, and the inlet hole 83, 84 and outlet holes 86 and 85 coincide. That is, the metal plate 72 and the metal plate 70 are the same member.
Therefore, the types of components of the filter 90 can be reduced, and the filter 90 can be manufactured at low cost. Further, the number of press dies can be reduced, and productivity is improved.

Moreover, in 1st Embodiment, the vane rotor 20 has the laminated part 50 comprised from the several metal plates 61-72 laminated | stacked to the axial direction. The metal plates 70, 71, and 72 that constitute the filter 90 are included in the plurality of metal plates 61 to 72 that constitute the stacked unit 50.
Therefore, the filter 90 can be easily incorporated into the vane rotor 20.

Second Embodiment
A valve timing adjusting apparatus according to a second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, the filter 100 includes a metal plate 101 shown in FIG. 20, a metal plate 102 shown in FIG. 21, and a metal plate 71 sandwiched between them.
As shown in FIG. 20, the metal plate 101 has through holes 103 and 104 in addition to the inlet holes 83 and 84 of the metal plate 72 in the first embodiment. The through holes 103 and 104 are formed so as to coincide with the outlet holes 85 and 86 of the metal plate 70 in the first embodiment when the metal plate 101 is inverted about the orthogonal axis AX2 orthogonal to the axis AX1.

  As shown in FIG. 21, the metal plate 102 has through holes 105 and 106 in addition to the outlet holes 85 and 86 of the metal plate 70 in the first embodiment. The through holes 105 and 106 are formed so as to coincide with the inlet holes 83 and 84 of the metal plate 72 in the first embodiment when the metal plate 102 is inverted about the orthogonal axis AX3 orthogonal to the axis AX1.

  As described above, according to the second embodiment, the through holes 103 to 106 vacated by the press work do not need to be minute holes enough to capture fine foreign matters that cannot be captured by the cartridge filter. Therefore, as in the first embodiment, the filter 100 can be easily manufactured by press working.

In the second embodiment, when the metal plate 101 is inverted about the orthogonal axis AX2, the outer edge of the metal plate 101 and the outer edge of the metal plate 102 coincide with each other when viewed from the thickness direction, and the through holes 83, 84, 103 and 104 and the through-holes 105, 106, 85, and 86 coincide. That is, the metal plate 101 and the metal plate 102 are the same member.
Therefore, the types of components of the filter 100 can be reduced, and the filter 100 can be manufactured at low cost. Further, the number of press dies can be reduced, and productivity is improved.

<Third Embodiment>
A valve timing adjusting apparatus according to a third embodiment of the present invention will be described with reference to FIGS. 22, 23, and 24. FIG.
In the third embodiment, the filter 110 includes a metal plate 111 shown in FIG. 22, a metal plate 112 shown in FIG. 23, and a metal plate 113 shown in FIG. 24 sandwiched therebetween.
As shown in FIG. 22, the metal plate 111 has through holes 114 and 115 in addition to the inlet holes 83 and 84 of the metal plate 72 in the first embodiment. The through holes 114 and 115 are formed so as to coincide with the intermediate holes 87 and 88 of the metal plate 71 in the first embodiment when the metal plate 111 rotates 90 degrees clockwise around the axis AX1.

As shown in FIG. 23, the metal plate 112 has through holes 114 and 115 in addition to the outlet holes 85 and 86 of the metal plate 70 in the first embodiment. The through holes 114 and 115 are formed to coincide with the intermediate holes 87 and 88 of the metal plate 71 in the first embodiment when the metal plate 112 is rotated 270 degrees clockwise around the axis AX1.
As shown in FIG. 24, the metal plate 113 has through holes 116 and 117 in addition to the intermediate holes 87 and 88 of the metal plate 71 in the first embodiment. The through holes 116 and 117 are formed so as to coincide with the inlet holes 83 and 84 of the metal plate 72 in the first embodiment when the metal plate 113 is rotated 90 degrees clockwise around the axis AX1.

  As described above, according to the third embodiment, the through holes 114 to 117 vacated by the press work do not need to be minute holes enough to capture minute foreign matters that cannot be captured by the cartridge filter. Therefore, as in the first embodiment, the filter 110 can be easily manufactured by pressing.

Further, in the third embodiment, when the metal plate 111 is rotated 90 degrees clockwise about the orthogonal axis AX1, the outer edge of the metal plate 111 and the outer edge of the metal plate 113 coincide with each other as viewed from the thickness direction, and the through hole 83, 84, 114, 115 and the through holes 116, 117, 87, 88 coincide. When the metal plate 112 is rotated 180 degrees clockwise about the orthogonal axis AX1, the outer edge of the metal plate 111 and the outer edge of the metal plate 112 coincide with each other when viewed from the thickness direction, and the through holes 83, 84, 114, 115 and the through holes 85, 86, 114, and 115 coincide with each other. That is, the metal plates 111, 112, and 113 are the same member.
Therefore, the filter 110 can be configured by one type of metal plate, and the filter 110 can be manufactured at low cost. Further, the number of press dies can be reduced, and productivity is improved.

<Fourth embodiment>
A valve timing adjusting apparatus according to a fourth embodiment of the present invention will be described with reference to FIGS.
In 4th Embodiment, the filter 120 is comprised from the metal plate 72, the metal plate 70, and the metal plates 121 and 122 pinched | interposed between them. The metal plates 121 and 122 correspond to “intermediate plates” recited in the claims.

The metal plate 121 has a plurality of intermediate holes 123 and 124. The metal plate 122 has a plurality of intermediate holes 125 and 126. The intermediate holes 123 to 126 are rectangular long holes extending in the same direction as the inlet holes 83 and 84.
As shown in FIG. 25, the intermediate holes 123 and 125 are formed at positions corresponding to the supply passage 29-1. The intermediate hole 123 is formed at a position that overlaps with one inlet hole 83 and is away from the outlet hole 85 when viewed in the thickness direction. The intermediate hole 125 overlaps with one outlet hole 85 when viewed from the thickness direction, and is formed at a position where one intermediate hole 123 partially overlaps and separates from the inlet hole 83.

  As shown in FIG. 26, the intermediate holes 124 and 126 are formed at positions corresponding to the supply passage 29-2. The intermediate hole 124 is formed at a position that overlaps with one inlet hole 84 and is away from the outlet hole 86 when viewed in the thickness direction. The intermediate hole 126 overlaps with one outlet hole 86 when viewed from the thickness direction, and is formed at a position where one intermediate hole 124 partially overlaps and separates from the inlet hole 84.

  As shown in FIGS. 25 and 26, the filter 120 has a flow path 127 extending from the inlet holes 83 and 84 to the outlet holes 85 and 86 through the intermediate holes 123 to 126. In the middle of the flow path 127, minute flow path sections 128 and 129 are formed in order from the inlet holes 83 and 84 side. The channel width W3 of the microchannel portion 128 matches the thickness t2 of the metal plate 121, and the channel width W1 of the microchannel portion 129 matches the thickness t1 of the metal plate 122. The thicknesses t1 and t2 are thinner than the minimum opening width W2. Further, the thickness t1 is thinner than the thickness t2. In the present embodiment, for example, the minimum opening width W2 is 0.6 mm, the thickness t2 is 0.3 mm, and the thickness t1 is 0.2 mm.

  As described above, according to the fourth embodiment, the through holes 123 to 126 vacated by press work do not need to be minute holes enough to capture fine foreign matters that cannot be captured by the cartridge filter. Therefore, as in the first embodiment, the filter 120 can be easily manufactured by press working.

In the fourth embodiment, two metal plates 121 and 122 are provided between the metal plate 72 and the metal plate 70. The intermediate holes 123 and 125 partially overlap with the other intermediate holes 124 and 126 when viewed from the thickness direction. The metal plate 122 located on the outlet holes 85 and 86 side is thinner than the metal plate 121 located on the inlet holes 83 and 84 side.
Thereby, in the middle part of the flow path 127, the micro flow path parts 128 and 129 in which the flow path width narrows in order are formed. Therefore, a relatively large foreign matter can be captured by the micro flow channel portion 128 and a relatively small foreign matter can be captured by the micro flow channel portion 129. Therefore, clogging of the filter 120 can be suppressed as compared with the first embodiment.

<Other embodiments>
In other embodiments of the present invention, the filter may be provided between the vane rotor and the camshaft.
In another embodiment of the present invention, the metal plates constituting the filter may have different shapes.
In other embodiments of the present invention, the minimum opening width of the inlet hole and the outlet hole may be set to other than 0.6 mm. Further, the thickness of the metal plate having the intermediate hole, that is, the channel width of the minute channel part may be set to other than 0.2 mm.
In other embodiments of the present invention, the inlet hole, the outlet hole, and the intermediate hole are not limited to a rectangle, and may be other polygons such as a parallelogram, a trapezoid, and a triangle, or a circle and an ellipse. Good.

In other embodiments of the present invention, the inlet hole may have a different shape than the outlet hole.
In another embodiment of the present invention, the vane rotor may have only a laminate without having a mold part.
In another embodiment of the present invention, the receiving hole may have an inner diameter different from that of the press-fitting hole. The accommodation holes and the press-fitting holes may be formed at unequal intervals in the circumferential direction.
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.

DESCRIPTION OF SYMBOLS 5 ... Valve timing adjustment apparatus 10 ... Housing 20 ... Vane rotor 30 ... Oil path switching valve 70, 102, 112 ... Metal plate (other end plate)
71, 121, 122 ... Metal plate (intermediate plate)
72, 101, 111 ... Metal plate (one end plate)
78 ... Check valve (reed valve)
83,84 ... Inlet hole 85,86 ... Outlet hole 87,88,123-126 ... Intermediate hole 90,100,110,120 ... Filter

Claims (6)

A valve timing adjusting device that is provided in a driving force transmission system for transmitting a driving force from a driving shaft (201) to a driven shaft (202) of the internal combustion engine (200) and adjusts a valve timing of a valve that is driven to open and close by the driven shaft. (5)
When one of the drive shaft and the driven shaft is a first axis and the other is a second axis,
A housing (10) rotatable integrally with the first shaft;
A vane (22) provided in the housing, rotatable integrally with the second shaft, and partitioning the internal space of the housing into an advance chamber (23) and a retard chamber (24); An advance oil passage (27) communicating with the advance chamber, a retard oil passage (28) communicating with the retard chamber, and an external first supply oil passage (204) capable of communicating with the first advance oil passage (204). A vane rotor (20) having two feed oil passages (29);
An advance port (36) provided at the center of the vane rotor and communicating with the advance oil passage, a retard port (37) communicating with the retard oil passage, and the second supply oil A supply port (38) communicating with the passage, and when the vane rotor is rotated relative to the housing in the advance side, the supply port and the advance port are connected, and the vane rotor is connected to the housing. An oil passage switching valve (30) for connecting the supply port and the retard port when rotating relatively to the retard side;
It is provided inside the vane rotor or between the vane rotor and the second shaft, allows hydraulic oil to flow from the first supply oil passage to the supply port, and from the supply port to the first supply oil. A check valve (78) for blocking the flow of hydraulic oil to the road;
A filter (90, 100, 110, 120) provided between the check valve and the second shaft;
With
The filter includes one end plate (72, 101, 111), one or more intermediate plates (71, 121, 122), and the other end plate (70, 102, 112) stacked in the thickness direction. Consisting of
The one end plate is located on the second shaft side and has a plurality of inlet holes (83, 84) that can communicate with the first supply oil passage;
The other end plate has a plurality of outlet holes (85, 86) that are located on the check valve side, communicate with the second supply oil passage, and are separated from the inlet hole when viewed from the thickness direction. And
The intermediate plate is sandwiched between the one end plate and the other end plate, and is provided with a plurality of intermediate holes (87, 88, 123-3) that communicate with one inlet hole and one outlet hole. 126), and the thickness (t1, t2) is smaller than the minimum opening width (W2, W3) of the inlet hole and the outlet hole. A plurality of the intermediate plates are provided,
The intermediate holes (123, 124) partially overlap with the other intermediate holes (125, 126) when viewed from the thickness direction,
The valve timing adjusting device according to claim 1, wherein the thickness of each intermediate plate is thinner toward the other end plate side.   3. The shape according to claim 1, wherein when the one end plate is rotated by a predetermined angle around the axis (AX1) of the vane rotor, the shape when viewed from the thickness direction coincides with the other end plate. Valve timing adjustment device.   The shape of the one end plate when viewed from the thickness direction coincides with that of the other end plate when the end plate is inverted about an orthogonal axis (AX2) orthogonal to the axis of the vane rotor. Or the valve timing adjustment apparatus of 2.   The said one end plate corresponds to the said intermediate | middle plate when the shape is seen from the thickness direction, when it rotates a predetermined angle around the axial center (AX1) of the said vane rotor. Valve timing adjustment device. The vane rotor has at least a part of a laminate (50) composed of a plurality of metal plates laminated in the axial direction,
The valve timing adjusting device according to any one of claims 1 to 5, wherein the one end plate, the intermediate plate, and the other end plate are included in the stacked body.

Images