Valve timing control device for internal combustion engine

Abstract

There is provided an engagement groove (31) which is formed in a first shoe (S1) of first to fourth shoes (S1), (S2), (S3), (S4) at a circumference position at which the engagement groove (31) is not overlapped an abutment surface (30) with a first vane (V1), which includes a pair of side surfaces (31a) and (31a) that are substantially parallel to the abutment surface (30), and with which a positioning pin (19) protruding from a sprocket (13) is engaged, so as to match phases of a housing main body (11) and the sprocket (13) in a rotation direction.

1 . A valve timing control device for an internal combustion engine, the valve timing control device comprising:
 a housing main body which has a cylindrical shape having openings formed on both end sides in an axial direction, and which includes a plurality of shoes formed on an inner circumference side of the housing main body to protrude from the inner circumference side;   a vane rotor which is fixed on a cam shaft, which is received within the housing main body, which is arranged to be rotated relative to the housing main body, and which includes a plurality of vanes each separating a portion between the shoes to an advance angle operation chamber and a retard angle operation chamber;   a pair of plate members closing the both end side openings of the housing main body;   a plurality of bolts arranged to fix the housing main is body and the pair of the plate members together through bolt insertion holes formed in the shoes to penetrate the shoes;   a specific vane of the vanes which has a circumferential width larger than circumferential widths of the other vanes;   a specific shoe of the shoes which includes an abutment surface on which one circumferential side surface of the specific vane is abutted;   a recessed portion which is formed in the specific shoe at a predetermined circumferential position at which the recessed portion is not overlapped with the abutment surface of the specific shoe in a radial direction of the housing main body, and which includes a pair of side surfaces that are substantially parallel to the abutment surface; and   a raised portion which is provided to at least one of the pair of the plate members, and which is arranged to be engaged with the recessed portion.   
     
     
         2 . The valve timing control device for the internal combustion engine as claimed in  claim 1 , wherein the recessed portion is formed in the specific shoe on a side circumferentially opposite to the abutment surface with respect to the bolt insertion hole. 
     
     
         3 . The valve timing control device for the internal combustion engine as claimed in  claim 2 , wherein the recessed portion is a groove portion which is formed by cutting the housing main body from a radially outer side to a radially inner side. 
     
     
         4 . The valve timing control device for the internal combustion engine as claimed in  claim 2 , wherein the recessed portion is a through hole penetrating through the housing main body in the axial direction. 
     
     
         5 . The valve timing control device for the internal combustion engine as claimed in  claim 2 , wherein each of the plurality of the shoes includes a seal member which is located on a radially inner side of the housing main body, and which is slidably abutted on the vane rotor; and the seal member of the specific shoe of the plurality of the seal members is provided on a side circumferentially opposite to the abutment surface with respect to the bolt insertion hole. 
     
     
         6 . The valve timing control device for the internal combustion engine as claimed in  claim 5 , wherein the seal member and a seat surface of a head portion of the bolt are overlapped with each other in the radial direction of the housing main body. 
     
     
         7 . The valve timing control device for the internal combustion engine as claimed in  claim 1 , wherein the recessed portion is provided in the specific shoe between the abutment surface and the bolt insertion hole in the circumferential direction. 
     
     
         8 . The valve timing control device for the internal combustion engine as claimed in  claim 1 , wherein the abutment surface and the bolts are overlapped with each other in the radial direction of the housing main body. 
     
     
         9 . The valve timing control device for the internal combustion engine as claimed in  claim 1 , wherein the bolt insertion hole is positioned on an extension of a vertical line with respect to the abutment surface. 
     
     
         10 . The valve timing control device for the internal combustion engine as claimed in  claim 9 , wherein an axis of the bolt is positioned on the extension of the vertical line with respect to the abutment surface. 
     
     
         11 . The valve timing control device for the internal combustion engine as claimed in  claim 1 , wherein the specific vane includes a through hole penetrating through the specific vane in the axial direction, a lock member slidably received within the through hole, and an urging member arranged to urge the lock member toward one side of the axial direction; and one of the pair of the plate members includes a lock recessed portion in which the lock member is inserted and engaged. 
     
     
         12 . The valve timing control device for the internal combustion engine as claimed in  claim 11 , wherein the lock member is inserted and engaged in the lock recessed portion in a state where a phase of the vane rotor relative to the housing main body is a maximum retard angle or a maximum advance angle. 
     
     
         13 . The valve timing control device for the internal combustion engine as claimed in  claim 12 , wherein the abutment surface is abutted on the specific vane in a state where the lock member is inserted and engaged in the lock recessed portion. 
     
     
         14 . A valve timing control device for an internal combustion engine, the valve timing control device comprising:
 a housing main body which has a cylindrical shape having at least an opening formed on one end side in an axial direction, and which includes a plurality of shoes formed on an inner circumference side of the housing main body to protrude from the inner circumference side;   a vane rotor which is fixed on a cam shaft, which is received within the housing main body, which is arranged ii to be rotated relative to the housing main body, and which includes a plurality of vanes each separating a portion between the shoes to an advance angle operation chamber and a retard angle operation chamber;   a plate member closing the opening of the housing main body;   a plurality of bolts arranged to fix the housing main body and the pair of plate members together through bolt insertion holes formed in the shoes to penetrate the shoes;   a lock mechanism including;
 a through hole formed in a specific vane of the vanes to penetrate through the specific vane, 
 a lock member slidably received within the through hole, 
 a lock recessed portion in which the lock member is engaged, and 
 an urging member received within the through hole, and arranged to urge the lock member toward the lock recessed portion, 
   the lock mechanism being arranged to restrict a relative rotation between the housing main body and the vane rotor by the engagement of the lock member with the lock recessed portion,   a recessed portion formed in a specific shoe of the plurality of the shoes that includes an abutment surface on which the specific vane is abutted in a state where the lock member is inserted and engaged in the lock recessed portion, and provided on a side circumferentially opposite to the abutment surface with respect to the bolt insertion hole; and   a raised portion which is provided to the plate member, and which is arranged to be engaged with the recessed portion.   
     
     
         15 . The valve timing control device for the internal combustion engine as claimed in  claim 14 , wherein the recessed portion includes a pair of side surfaces that are substantially parallel to the abutment surface. 
     
     
         16 . The valve timing control device for the internal combustion engine as claimed in  claim 14 , wherein each of the plurality of the shoes includes a seal member which is located on a radially inner side of the housing main body, and which is slidably abutted on the vane rotor; and the seal member of the specific shoe of the plurality of the seal members is provided on a side circumferentially opposite to the abutment surface with respect to the bolt insertion hole. 
     
     
         17 . The valve timing control device for the internal combustion engine as claimed in  claim 14 , wherein the abutment surface and the bolts are overlapped with each other in the radial direction of the housing main body.