JPWO2017208548A1 - Valve timing control system for internal combustion engine - Google Patents

Abstract

  A circumferential position not overlapping with the contact surface (30) with the first vane (V1) of the first shoe (S1) among the first to fourth shoes (S1), (S2), (S3), (S4) Provided with an engagement groove (31) having a pair of side surfaces (31a), (31a) substantially parallel to the contact surface (30), and the sprocket (13) is protruded in the engagement groove (31) By engaging the positioning pin (19), it is possible to perform phase alignment in the rotational direction of the housing body (11) and the sprocket (13).

Description

  The present invention relates to a valve timing control system for an internal combustion engine that controls the opening / closing timing of an intake valve or an exhaust valve of the internal combustion engine according to the operating state.

  As a conventional valve timing control device, for example, one described in Patent Document 1 below is known.

  That is, this valve timing control device is integrally provided with a disk-like sprocket that rotates in synchronization with the crankshaft via a timing chain, and has a bottomed cylindrical housing in which a plurality of shoes are provided protruding on the inner peripheral side. A vane rotor fastened to one end of the camshaft via a boss inserted and fitted to the sprocket, and having a plurality of vanes protruding from the outer circumferential side, and the vane rotor is in relative relation to the inner circumferential side of the housing It is configured by being rotatably accommodated.

  And, in a recess facing radially inward at a position adjacent to the contact surface side of a specific shoe against which a wide specific vane constituting the so-called lock mechanism abuts, a surface facing the sprocket housing By the engagement of the protruding projections, positioning of the relative phase between the timing sprocket and the housing is achieved.

JP, 2013-2372, A

  However, in the conventional valve timing control device, in particular, since the recess is provided adjacent to the contact surface, a predetermined range on the outer peripheral side on which the recess is formed among the contact surfaces. However, the contact area of the specific shoe with the specific vane has been limited. As a result, the contact surface pressure when the specific vane abuts on the contact surface becomes excessive, and as a result, there is a possibility that the deformation of the specific shoe is caused.

  The present invention has been made in view of the above-mentioned circumstances of the conventional valve timing control device, and it is one of the object of the present invention to provide a valve timing control device for an internal combustion engine which can suppress deformation of a specific shoe. The purpose is.

  The present invention, as one aspect thereof, is a specific shoe, which is a pair substantially parallel to the contact surface at a circumferential position not overlapping the contact surface with which the specific vane abuts in the radial direction of the housing body. The recessed part which has a side of is provided.

  Further, according to another aspect of the present invention, a recess is provided on a specific shoe, which is a circumferentially opposite side of the contact surface with respect to the bolt insertion hole.

  According to the present invention, deformation of a specific shoe can be suppressed.

1 is an exploded perspective view of a valve timing control device for an internal combustion engine according to a first embodiment of the present invention. They are a longitudinal cross-sectional view of a valve timing control device of an internal combustion engine shown in Drawing 1, and a key figure showing a hydraulic circuit concerning this. It is a front view in the state which removed the front plate of the valve timing control apparatus shown in FIG. 1, Comprising: It is a figure showing the non-locking state of a vane rotor. It is a front view in the state which removed the front plate of the valve timing control apparatus shown in FIG. 1, Comprising: It is a figure showing the locked state of a vane rotor. It is a principal part enlarged view of FIG. 4, Comprising: It is the figure which abbreviate | omitted and displayed the sprocket from FIG. It is the FIG. 5 equivalent view showing the 1st modification of 1st Embodiment of this invention. It is the FIG. 5 equivalent view showing the 2nd modification of 1st Embodiment of this invention. It is the FIG. 5 equivalent view showing 2nd Embodiment of this invention.

  Hereinafter, an embodiment of a valve timing control device for an internal combustion engine according to the present invention will be described based on the drawings. In the following embodiment, the device is applied to a valve gear on the intake side as in the prior art. Further, for convenience of explanation, the left side of FIG. 2 will be described as “front” and the right side as “rear”.

First Embodiment
1 to 5 show a first embodiment of a valve timing control device for an internal combustion engine according to the present invention, and as shown in FIG. 1 and FIG. Are interposed between the sprocket 13 driven to rotate and the camshaft 2 provided so as to be rotatable relative to the sprocket 13, and are operated and controlled through a predetermined hydraulic supply and discharge means 5, so that both The relative rotational phase of 1 and 2 is converted.

  Specifically, the housing 10 is integrally provided with the sprocket 13 and has four first to fourth shoes S1 to S4 protruding on the inner peripheral side, and can be relatively rotated on the inner peripheral side of the housing 10 And a vane rotor 20 which is housed and disposed, and in which four vanes (first to fourth vanes V1 to V4) are provided so as to protrude on the outer peripheral side. And, by the vanes V1 to V4, a circumferential interval between the shoes S1 to S4 is divided into a pair of retarding operation chambers (hereinafter abbreviated as "retarding chambers") Re and an advancing operation chamber (hereinafter (Abbreviated as "advance chamber") Ad are selectively controlled by supplying hydraulic pressure to the working chambers Ad and Re from the hydraulic supply and discharge means 5, separately from Ad.

  The camshaft 2 is rotatably supported via a bearing 3 provided on a cylinder head (not shown), and an engine valve (not shown) via a drive cam (not shown) provided at a predetermined position on the outer peripheral portion. Open the intake valve). A rotor connection portion 2a is provided at the front end portion of the camshaft 2 so as to face the inner peripheral side of the rear end portion of the cylindrical portion 17 described later to provide a connection with the vane rotor 20. In the inner axial direction, a female screw portion 2b is formed on which a cam bolt 4 for fastening the vane rotor 20 is screwed.

  The housing 10 has a cylindrical housing main body 11 open at both axial end sides, a front plate 12 closing the front end side opening of the housing main body 11, and a rear closing the rear end side opening of the housing main body 11 Sprockets 13 constituting a plate are fixed together by a plurality of (four in the present embodiment) bolts 14.

  The housing body 11 is integrally formed of a sintered metal material, and the first to fourth shoes S1 to S4 are integrally protruded inward at substantially equally spaced positions in the circumferential direction on the inner peripheral side. ing. Each of the first to fourth shoes S1 to S4 has a substantially rectangular shape in a plan view, and the bolts 14 are inserted in an inner axial direction on the base end side to be used for co-clamping fixation to the sprocket 13 The bolt insertion holes 11a are formed in a penetrating manner, and a substantially prismatic sealing member 15 is fitted in sealing grooves recessed in the axial direction on each tip end side.

  Further, among the first to fourth shoes S1 to S4, on the outer peripheral side of the first shoe S1, which is a specific shoe with which the first vane V1 described later abuts, a positioning pin described later provided on the sprocket 13 An engaging groove 31 is formed as a recess (groove) for positioning in the rotational direction of the housing body 11 and the sprocket 13 by engaging with it 19.

  That is, as shown in FIG. 5, in particular, the engagement groove 31 is cut out substantially linearly from the radially outer side to the inner side in the radial direction with respect to the housing main body 11, and when the vane rotor 20 described later is locked. Positioning of the housing main body 11 and the sprocket 13 in the rotational direction via the positioning pin 19 with a two-face width W consisting of a pair of side surfaces 31a, 31a substantially parallel to the contact surface 30 contacting the first vane V1. It is done. Further, the engagement groove 31 is a position opposite to the contact surface 30 in the circumferential direction with respect to the bolt insertion hole 11a in the first shoe S1, and has a relatively thick wall in the circumferential direction. It is provided in part S1a. Here, a range of ± 3 ° is preferable as the above “almost parallel”.

  Further, in the first shoe S1, the bolt insertion hole 11a is positioned on the extension of the perpendicular P to the contact surface 30, and the bolt insertion hole on the extension of the perpendicular P to the contact surface 30. The axial center Z of the bolt 14 inserted in 11 a is arranged so that the contact surface 30 and the bolt 14 overlap in the circumferential direction of the housing body 11 when viewed from the axial direction of the housing body 11 In the configuration, in other words, the contact surface 30 is positioned on an imaginary circle C formed by the radial width of the shaft portion 14 b of the bolt 14. Furthermore, in the first shoe S1, as shown in FIGS. 3 and 4, the bearing surface of the head portion 14a of the bolt 14 and the seal member 15 are circumferentially directed to the housing body 11 when viewed from the axial direction of the housing body 11. It is configured to overlap.

  As shown in FIGS. 1 and 2, the front plate 12 has a disk shape made of a predetermined metal material, and a rotor insertion hole 12a through which a front end portion of the rotor main body 21 to be described later is inserted While being formed, four bolt insertion holes 12b to be used for co-clamping fixation to the sprocket 13 are formed by being inserted through the respective bolts 14 at positions corresponding to the respective bolt insertion holes 11a on the outer peripheral side. There is.

  The sprocket 13 as the rear plate is integrally formed of sintered metal, and is provided flat at the front end, and is provided with an end wall 16 for co-clamping fixation with the housing body 11 and the front plate 12; A hollow cylindrical portion 17 extending in the axial direction from the rear end surface of the sprocket 13 and a radial projection on the outer peripheral side of the cylindrical portion 17, and a timing chain (not shown) is engaged by being wound and engaged And a plurality of teeth 18 for transmitting the rotational force of the crankshaft.

  A rotor insertion hole 13a through which a rear end portion of the rotor main body 21 to be described later is inserted is formed at substantially the center position of the end wall 16 and a position corresponding to the bolt insertion holes 11a on the outer peripheral side. In addition, by screwing the male screw portion 14c of each of the bolts 14, a female screw hole 13b to be used for co-clamping fixation with the housing body 11 and the front plate 12 is formed. In addition, the formation allowance of the said female screw hole 13b is ensured by protrudingly providing the inner peripheral side of each said tooth part 18 in the buildup shape partially about the formation part of this female screw hole 13b.

  Further, as shown in FIG. 1, FIG. 3 and FIG. 4, the front end side outer peripheral edge of the end wall 16 is phase-matched with the sprocket 13 and the crankshaft via the timing chain as shown in FIGS. A predetermined alignment mark 13c to be provided is formed, and a projection for performing phase alignment between the sprocket 13 and the housing main body 11 by being engaged and engaged with the engagement groove 31 on the inner peripheral side of the alignment mark 13c. A pin holding hole 13d for holding a positioning pin 19 as a part is bored, and the positioning pin 19 is press-fitted and fixed to the pin holding hole 13d.

  The vane rotor 20 is integrally formed of a predetermined metal material, and is provided in a substantially cylindrical shape at a central portion to provide a connection with the camshaft 2 and the hydraulic pressure supply and discharge means 5, and the rotor It is mainly provided radially outward on the outer peripheral side of the main body 21, and is mainly composed of first to fourth vanes V1 to V4 provided to the sections of the retardation chambers Re and the advance chambers Ad.

  As shown in FIGS. 1 and 2, the rotor body 21 has a substantially bottomed cylindrical shape that opens forward, and supplies and discharges hydraulic pressure to the working chambers Ad and Re through the hydraulic pressure supply and discharge means 5. And the end wall 21b provided to close the rear end side of the cylindrical portion 21a and for fastening the vane rotor 20 by the cam bolt 4 mainly.

  The cylindrical portion 21a is configured to be in sliding contact with the seal member 15 fitted on the shoes S1 to S4 at the outer peripheral side, and airtightly holds the operation chambers Ad and Re. Further, on the inner peripheral side of the cylindrical portion 21a, a passage component 56 described later is configured to be insertable, and in the inner radial direction on both sides in the circumferential direction across the vanes V1 to V4. Retard side oil holes 23 capable of communicating with the respective retard chambers Re and advance side oil holes 24 capable of communicating with the respective advance chambers Ad are respectively formed to penetrate through the respective oil holes 23 and 24. It is possible to supply and discharge hydraulic pressure to the working chambers Ad and Re.

  In the end wall 21b, a bolt insertion hole 21c provided for fastening the vane rotor 20 by the cam bolt 4 is formed in a substantially central portion thereof along the axial direction, and the head of the cam bolt 4 inserted in the bolt insertion hole 21c. The vane rotor 20 can be fastened to the camshaft 2 by being seated on the front end face of the end wall 21b.

  The vanes V1 to V4 are disposed between the shoes S1 to S4 as shown in FIG. 1, FIG. 3 and FIG. A substantially prismatic seal member 22 is fitted in the groove, and the seal member 22 is in sliding contact with the inner peripheral surface of the housing main body 11 to form a space formed between the shoes S1 to S4. Are airtightly divided in each pair of hydraulic chambers Ad, Re.

  Further, among the vanes V1 to V4, only the first vane V1 is configured as a wide-width specific vane having a circumferential width larger than those of the other vanes V2 to V4, and is adjacent at the maximum relative rotation of the vane rotor 20 Further rotation of the vane rotor 20 is restricted by coming into contact with the shoes S1 and S2. A well-known lock mechanism 40 for holding the phase of the vane rotor 20 is accommodated in the first vane V1 while the first vane V1 is in contact with the contact surface 30 at the time of engine stop described later. ing.

  The lock mechanism 40 is slidably accommodated in a pin accommodation hole 43 formed in the axial direction of the first vane V1 so as to be engaged with an engagement hole 44 bored in the sprocket 13 and thereby the vane rotor 20. A substantially cylindrical lock pin 41 for restricting relative movement between the housing 20 and the housing 10, and a spring 42 interposed between the lock pin 41 and the front plate 12 and urging the lock pin 41 toward the sprocket 13 side. Mainly composed of

  That is, when the positions of the lock pin 41 and the engagement hole 44 match, the tip of the lock pin 41 is pushed into the engagement hole 44 by the biasing force of the spring 42, and the relative rotation between the housing 10 and the vane rotor 20 Is regulated (locked). On the other hand, a communication groove 45 for connecting the retardation chamber Re and the engagement hole 44 is cut out on the inner side surface (the end surface facing the sprocket 13) of the first vane V1 via the communication groove 45. The hydraulic pressure acts on the tip end side of the lock pin 41 in the engagement hole 44, whereby the lock pin 41 is pushed away by the hydraulic pressure, and the lock is released.

  The hydraulic pressure supply / discharge means 5 selectively supplies hydraulic pressure to the respective working chambers Ad, Re as shown in FIG. 2 or discharges hydraulic oil in the respective working chambers Ad, Re. Through the retard side oil passage 51 connected to the respective retard side oil holes 23, the advance side oil passage 52 connected to the respective advance side oil holes 24, and the well-known solenoid valve 55. An oil pump 53, which is a hydraulic pressure source for supplying hydraulic pressure to one of the oil passages 51, 52, and a drain passage connected to the other oil passage 51, 52 not connected to the oil pump 53 via the solenoid valve 55 And 54.

  The retard side oil passage 51 and the advance side oil passage 52 communicate with the retard side oil hole 23 and the advance side oil hole 24 via a passage component 56 connected to the cylindrical portion 21 a of the vane rotor 20. It is configured to be possible. Specifically, the retard side oil passage 51 is formed between the retard side connection passage 56 a provided along the inner axial direction of the passage component 56 and the axial direction of the vane rotor 20 and the passage component 56. It communicates with each of the retarding side oil holes 23 through the communicating chamber 57 which is formed. On the other hand, the advance side oil passage 52 is provided with an advance side connection passage 56b provided parallel to the retard side connection passage 56a along the internal axial direction of the passage component 56, and a tip end portion of the passage structure member 56. The advance side oil holes 24 communicate with each other via an annular groove 56c provided on the outer peripheral side.

  Further, on the outer peripheral side of the passage component member 56, a plurality of annular grooves are cut out along the circumferential direction, and an annular seal member 58 is fitted in the annular grooves, and the seal member By sliding contact with the inner peripheral surface of the cylindrical portion 21a, the space between the communication chamber 57 and the annular groove 56c is sealed.

  The solenoid valve 55 is a two-way switching valve, and is controlled by a control signal from an electronic control unit (ECU) (not shown) which is output based on detection results of various sensors mounted on the vehicle. The connection between the oil pump 53 and the drain passage 54 is selectively switched.

  Hereinafter, the characteristic operation of the valve timing control device for an internal combustion engine according to the present invention will be described based on FIG. 3 and FIG.

  In the valve timing control device, when the engine is stopped, the vane rotor 20 which is not in contact with the contact surface 30 as shown in FIG. The vane rotor rotates to the corner side, and as shown in FIG. 4, the first vane V1 abuts on the abutment surface 30 of the first shoe S1, and the lock pin 41 engages with the engagement hole 44, whereby the vane rotor The housing 20 and the housing 10 are integrally rotated at the most retarded phase.

  Therefore, in the valve timing control device, when assembling the device, the housing main body 11 in the housing 10 is based on the phase of the locked state, that is, the phase of the state where the first vane V1 abuts on the abutment surface 30. And the sprocket 13 in the rotational direction.

  Here, conventionally, as described above, the engagement groove for engaging the positioning pin 19 for the phase alignment is adjacent to the contact surface 30 on the base end side (peripheral side) of the first shoe S1. Since it is provided, the contact area of the first shoe S1 with the first vane V1 is eroded (restricted) with the formation of the engagement groove, and as a result, the contact surface 30 is in contact with the first vane V1. The surface pressure may be excessive, which may cause the deformation of the first shoe S1.

  Further, since the conventional engagement groove is formed on the base end side of the first shoe S1 along the radial direction of the housing main body 11 which is not parallel to the contact surface 30, the housing main body 11 ( As the vane rotor 20 moves along the engagement groove along with the centering of the vane rotor 20 with respect to the housing 10), the vane rotor 20 is separated from the contact surface 30, making it difficult to achieve proper phasing.

  On the other hand, in the valve timing control device according to the present embodiment, the circumferential position of the first shoe S1 that does not overlap with the contact surface 30 with the first vane V1 is substantially parallel to the contact surface 30. The engagement groove 31 having the pair of side surfaces 31a, 31a is provided. The “circumferential position not overlapping with the contact surface 30” is a position where the contact surface 30 and the engagement groove 31 do not overlap in the radial direction of the housing main body 11, in other words.

  As described above, by providing the engaging groove 31 at a circumferential position not overlapping with the contact surface 30, the contact surface of the contact surface 30 with the first vane V1 is corroded by the engaging groove 31. It will not be restricted. That is, the contact area of the contact surface 30 with the first vane V1 can be sufficiently secured, and the contact surface pressure of the contact surface 30 with the first vane V1 can be reduced. The deformation of S1 can be suppressed.

  Further, in forming the engagement groove 31, the pair of side surfaces 31 a, 31 a of the engagement groove 31 is configured to be parallel to the contact surface 30. The vane rotor 20 can be moved in parallel along the contact surface 30 while maintaining the contact with the contact surface 30. That is, when the vane rotor 20 is centered with respect to the housing main body 11, there is no possibility that the vane rotor 20 is separated from the contact surface 30, and appropriate phase alignment between the housing main body 11 and the sprocket 13 can be performed.

  As described above, in the valve timing control device for an internal combustion engine according to the present embodiment, the engagement groove 31 having the two-face width W formed by the pair of side surfaces 31a and 31a parallel to the contact surface 30 contacts By being provided in the circumferential direction not overlapping with the surface 30, the contact surface pressure of the contact surface 30 with the first vane V1 is reduced, so that deformation of the first shoe S1 can be suppressed and the vane rotor 20 with respect to the housing 10 Positional displacement in the circumferential direction can be suppressed, and the assembly accuracy of the device can be improved.

  In the present embodiment, as an example of the recess according to the present invention, as shown in FIG. 5, the engagement groove is formed by cutting out in a groove shape from the radially outer side to the inner side on the outer peripheral side of the housing main body 11. Although 31 is illustrated, the recess according to the present invention is not limited to such a groove-like form.

  In other words, the recess according to the present invention may be in a form having a two-face width W consisting of a pair of side surfaces 31a, 31a parallel to the contact surface 30, for example, besides the groove-like one. It is also possible to form as the through holes 32 and 33 which penetrated in the axial direction as shown in FIG. With this configuration as well, with the two-face width W parallel to the contact surface 30, the above-described unique effects of the present invention can be exhibited.

  Further, in the present embodiment, the engagement groove 31 is disposed on the first shoe S1 on the side opposite to the contact surface 30 in the circumferential direction with respect to the bolt insertion hole 11a. As a result, the contact surface 30 and the bolt insertion hole 11a (bolt 14) can be brought closer to each other, and the rigidity of the first shoe S1 can be improved. As a result, when the first vane V1 is in contact It is possible to suppress the occurrence of positional deviation of the first shoe S1 in the above.

  Furthermore, in the present embodiment, the seal members 15 in sliding contact with the vane rotor 20 are provided on the radially inner side of the housing main body 11 in the shoes S1 to S4, and the seal members provided on the first shoe S1 among them. Reference numeral 15 is provided on the opposite side of the contact surface 30 in the circumferential direction with respect to the bolt insertion hole 11a. As described above, also by arranging the seal member 15 in the first shoe S1 at a position farther from the contact surface 30, the contact surface 30 and the bolt insertion hole 11a (bolt 14) can be made closer to each other. As a result, the rigidity of the first shoe S1 can be improved, and the occurrence of positional deviation of the first shoe S1 when the first vane V1 is in contact can be suppressed.

  Moreover, at this time, the seal member 15 provided on the first shoe S1 is configured to overlap the seat surface of the head portion 14a of the bolt 14 in the radial direction of the housing main body 11. With this configuration, the radial dimension of the housing main body 11 can be further miniaturized, and the device can be miniaturized.

  Further, in the present embodiment, the contact surface 30 and the respective bolts 14 overlap in the radial direction of the housing main body 11. With this configuration, the radial range of the contact surface 30 can be expanded, and the occurrence of positional deviation of the first shoe S1 at the time of contact of the first vane V1 can be suppressed.

  Furthermore, at this time, in the present embodiment, the bolt insertion hole 11 a is positioned on the extension of the perpendicular P with respect to the contact surface 30. With this configuration, the radial range of the contact surface 30 can be expanded, and the occurrence of positional deviation of the first shoe S1 at the time of contact of the first vane V1 can be suppressed.

  In addition, the axial center of the bolt 14 is positioned on the extension of the perpendicular P to the contact surface 30. With this configuration, the rigidity of the first shoe S1 can be improved, so that the occurrence of positional deviation of the first shoe S1 can be suppressed when the first vane V1 is in contact.

Second Embodiment
FIG. 8 shows a second embodiment of a valve timing control device for an internal combustion engine according to the present invention, in which the arrangement of the engagement groove 31 according to the first embodiment is changed. The basic configuration other than the modification is the same as that of the first embodiment, and therefore the same reference numerals are given to the same components as the first embodiment, and the description thereof will be omitted.

  That is, in the valve timing control device according to the present embodiment, the contact groove 30 is a contact surface with the first vane V1 in the first shoe S1, and the bolt insertion hole 11a. It is provided in the circumferential direction of and. In the present embodiment, the arrangement of the engaging groove 31 is merely changed, and the specific configuration of the engaging groove 31 itself is the same as that of the first embodiment.

  From such a configuration, according to the valve timing control device according to the present embodiment, in addition to the same effects as those of the first embodiment, in particular, the engagement groove 31 includes the contact surface 30 and the bolt insertion hole By being provided circumferentially with respect to 11a, it is possible to arrange the engaging groove 31 for phase alignment between the housing body 11 and the sprocket 13 closer to the contact surface 30, thereby The positional accuracy of the contact surface 30 can be further improved.

  The present invention is not limited to the configuration of the above-described embodiment, and can be freely changed according to the specification, cost, and the like of the application target, as long as the above-described effects of the present invention can be exhibited. For example, the housing main body 11 is formed in a bottomed cylindrical shape, and it is applicable also to a form which has only one side of the front plate 12 or the rear plate (sprocket) 13.

  As a valve timing control device for an internal combustion engine based on the embodiment described above, for example, one having an aspect described below can be considered.

  That is, in one aspect, the valve timing control device of the internal combustion engine is formed in a tubular shape in which both end sides in the axial direction are open, and a housing main body in which a plurality of shoes are provided protruding on the inner peripheral side A vane rotor fixed in the housing body and rotatably accommodated in the housing body and having a plurality of vanes for dividing the space between the shoes into an advancing operation chamber and a retarding operation chamber; and closing the openings on both ends of the housing body And a plurality of bolts for fastening and fixing the housing body and the pair of plate members together through bolt insertion holes formed through the shoes, and the other of the vanes A specific vane having a circumferential width larger than that of the vane, and a specific shoe having an abutment surface on which one circumferential side surface of the particular vane of the shoes abuts A recess having a pair of side surfaces substantially parallel to the contact surface and provided at a predetermined circumferential position not overlapping the contact surface in the radial direction of the housing main body of the specific shoe; And a convex portion provided on at least one of the pair of plate members and engaged with the concave portion.

  In a preferred aspect of the valve timing control device for the internal combustion engine, the recess is provided on the specific shoe on the circumferentially opposite side of the contact surface with respect to the bolt insertion hole.

  In another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the recess is a groove portion which is formed by cutting out in the radial direction from the radially outer side in the housing main body.

  In still another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the recess is formed by an axially penetrating through hole in the housing body.

  In still another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the plurality of shoes have a plurality of seal members which are in sliding contact with the vane rotor on the inner side in the radial direction of the housing body. The seal member in the specific shoe among the plurality of seal members is provided on the circumferentially opposite side of the contact surface with respect to the bolt insertion hole.

  In still another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the seal member and the seat surface of the head of the bolt overlap in the radial direction of the housing body. It is done.

  In still another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the recess is provided in a circumferential direction between the contact surface and the bolt insertion hole in the specific shoe. There is.

  In still another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the abutment surface and the respective bolts overlap in the radial direction of the housing main body.

  In still another preferred aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the bolt insertion hole is located on the extension of the perpendicular to the contact surface.

  In still another preferred aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the axis of the bolt is located on the extension of the perpendicular to the contact surface.

  In still another preferred aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the specific vane is slidably provided in a through hole formed along the axial direction and in the through hole. And a biasing member for biasing the locking member toward one side in the axial direction, one of the pair of plate members has a locking recess in which the locking member can be engaged. .

  In still another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the lock member is provided in the lock recess in a state where the relative phase of the vane rotor with respect to the housing body is the most retarded or most advanced. Get in.

  In still another preferred aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the abutting surface abuts on the specific vane in a state where the locking member is engaged with the locking recess.

  From another point of view, in one aspect, a valve timing control apparatus for an internal combustion engine is formed in a cylindrical shape having at least one end in the axial direction open, and a housing main body in which a plurality of shoes project And a vane rotor fixed to the camshaft and rotatably accommodated within the housing body, the vane rotor having a plurality of vanes for dividing the shoes into an advance operation chamber and a retard operation chamber; A plate member closing the opening, a plurality of bolts fastening and fixing the housing body and the plate member together via bolt insertion holes formed through the shoes, and a specific vane of the vanes A through hole formed, a lock member slidably accommodated in the through hole, and a plate member provided on the plate member, the lock member being engageable The housing main body and the housing are provided with a concave portion and an urging member accommodated in the through hole and urging the lock member to the lock concave side, and the lock member is engaged with the lock concave portion. The bolt insertion is performed in a specific shoe among the plurality of shoes having a lock mechanism that regulates relative rotation of the vane rotor, and an abutment surface with which the particular vane abuts when the lock member is engaged with the lock recess. A recess provided on the circumferentially opposite side of the contact surface with respect to the hole, and a protrusion provided on the plate member and engaged with the recess are provided.

  In a preferred aspect of the valve timing control device of the internal combustion engine, the recess has a pair of side surfaces substantially parallel to the contact surface.

  In another preferable aspect, in any of the aspects of the valve timing control device of the internal combustion engine, the plurality of shoes have a plurality of seal members that are in sliding contact with the vane rotor, respectively, radially inward of the housing body. The seal member in the specific shoe among the plurality of seal members is provided on the circumferentially opposite side of the contact surface with respect to the bolt insertion hole.

  In still another preferred aspect, the contact surface and each bolt overlap in the radial direction of the housing body.

Claims (17)

A housing main body which is formed in a cylindrical shape in which both end sides in the axial direction are open and in which a plurality of shoes are provided on the inner peripheral side,
A vane rotor fixed to a camshaft and rotatably accommodated in the housing body, the vane rotor having a plurality of vanes for dividing each shoe into an advance operation chamber and a retard operation chamber;
A pair of plate members closing the openings at both ends of the housing body;
A plurality of bolts for co-clamping and fixing the housing body and the pair of plate members via bolt insertion holes formed through the respective shoes;
A particular vane having a circumferential width greater than the other vanes among the vanes;
A particular shoe having an abutment surface with which one side surface of the particular vane in the circumferential direction abuts on the respective shoes;
A recess provided at a predetermined circumferential position not overlapping the contact surface in the radial direction of the housing body of the specific shoe, and having a pair of side surfaces substantially parallel to the contact surface;
A protrusion provided on at least one of the pair of plate members and engaged with the recess;
A valve timing control device for an internal combustion engine, comprising:   The valve timing control device for an internal combustion engine according to claim 1, wherein the recessed portion is provided on a side of the specific shoe circumferentially opposite the contact surface with respect to the bolt insertion hole.   3. The valve timing control device for an internal combustion engine according to claim 2, wherein the recessed portion is a groove portion formed by cutting out radially outward from inside in the housing body.   3. The valve timing control device for an internal combustion engine according to claim 2, wherein the recess is formed by a through hole axially penetrating in the housing body. The plurality of shoes have a plurality of seal members that are in sliding contact with the vane rotor, respectively, on the radially inner side of the housing body,
3. The internal combustion engine according to claim 2, wherein the seal member in the specific shoe among the plurality of seal members is provided on the circumferentially opposite side of the contact surface with respect to the bolt insertion hole. Valve timing control device.   The valve timing control device for an internal combustion engine according to claim 5, wherein the seal member and the seat surface of the head of the bolt overlap in the radial direction of the housing body.   The valve timing control device for an internal combustion engine according to claim 1, wherein the recessed portion is provided in a circumferential direction between the contact surface and the bolt insertion hole in the specific shoe.   2. The valve timing control device for an internal combustion engine according to claim 1, wherein the contact surface and each of the bolts overlap in the radial direction of the housing body.   The valve timing control device for an internal combustion engine according to claim 1, wherein the bolt insertion hole is positioned on an extension of a perpendicular to the contact surface.   10. The valve timing control device for an internal combustion engine according to claim 9, wherein an axis of the bolt is positioned on an extension of a perpendicular to the contact surface. The particular vane has a through hole formed in the axial direction, a lock member slidably accommodated in the through hole, and a bias for biasing the lock member to one side in the axial direction. And a member,
The valve timing control device for an internal combustion engine according to claim 1, wherein one of the pair of plate members has a lock recess in which the lock member can be engaged.   The valve timing control device for an internal combustion engine according to claim 11, wherein the lock member engages with the lock recess when the relative phase of the vane rotor with respect to the housing body is the most retarded angle or the most advanced angle.   The valve timing control device for an internal combustion engine according to claim 12, wherein the contact surface contacts the specific vane in a state where the lock member is engaged with the lock recess. A housing main body which is formed in a cylindrical shape in which at least one end side in the axial direction is open, and in which a plurality of shoes are provided on the inner peripheral side,
A vane rotor fixed to a camshaft and rotatably accommodated in the housing body, the vane rotor having a plurality of vanes for dividing each shoe into an advance operation chamber and a retard operation chamber;
A plate member closing an opening of the housing body;
A plurality of bolts for fastening and fixing the housing body and the plate member together via bolt insertion holes formed through the respective shoes;
A through hole formed in a specific vane of the vanes, a lock member slidably accommodated in the through hole, and a lock recess provided on the plate member and in which the lock member can be engaged And an urging member accommodated in the through hole and urging the lock member toward the lock recess, and the lock member engages with the lock recess to thereby hold the housing main body and the vane rotor A locking mechanism that regulates relative rotation,
In a specific shoe among the plurality of shoes having an abutment surface with which the specific vane abuts in a state where the lock member is engaged with the lock recess, circumferentially opposite to the bolt insertion hole in the circumferential direction of the abutment surface A recess provided on the side,
A protrusion provided on the plate member and engaged with the recess;
A valve timing control device for an internal combustion engine, comprising:   The valve timing control device for an internal combustion engine according to claim 14, wherein the recess has a pair of side surfaces substantially parallel to the contact surface. The plurality of shoes have a plurality of seal members that are in sliding contact with the vane rotor, respectively, on the radially inner side of the housing body,
15. The internal combustion engine according to claim 14, wherein a seal member of the specific shoe among the plurality of seal members is provided on a circumferentially opposite side of the contact surface with respect to the bolt insertion hole. Valve timing control device.   The valve timing control device for an internal combustion engine according to claim 14, wherein the contact surface and each of the bolts overlap in a radial direction of the housing body.

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