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US 9,957,846 B2Granted
Lifter structure
AssigneeOtics Corporation
InventorsDaiki Miyazawa, Kimihiko Todo, Tatsuya Sasaki
Life of this patent
Estimating the term…
Abstract
A lifter structure includes a cylindrical member configured to be reciprocally slid in a guide hole of a lifter guide according to rotation of a cam and having an engagement groove and a rotation-preventing member which is separate from the cylindrical member and is disposed so as to face an interior of the guide hole. The rotation-preventing member is inserted into the engagement groove to abut against a groove edge of the engagement groove in a rotation direction of the cylindrical member, thereby preventing the cylindrical member from rotation in the guide hole.
Claims5
A lifter structure comprising:
- a cylindrical member configured to be reciprocally slid in a guide hole of a lifter guide according to rotation of a cam, the cylindrical member having a plurality of engagement grooves;
- and
- a rotation-preventing member which is separate from the cylindrical member and is disposed so as to face an interior of the guide hole, the rotation-preventing member being inserted into the engagement grooves to abut against groove edges of the engagement grooves in a rotation direction of the cylindrical member, thereby preventing the cylindrical member from rotation in the guide hole, wherein:
- the rotation-preventing member is fixed to the lifter guide and includes:
- a connecting portion extending in a reciprocating direction of the cylindrical member;
- and
- a pair of insertion portions respectively protruding from both ends of the connecting portion in a direction perpendicular to the reciprocating direction of the cylindrical member, the insertion portions being respectively insertable into the engagement grooves in a non-press fitted state;
- and
- the engagement grooves are paired at respective positions where the insertion portions are respectively insertable into the engagement grooves in two ends of the cylindrical member.
6 more elements
A lifter structure comprising:
- a cylindrical member configured to be reciprocally slid in a guide hole of a lifter guide according to rotation of a cam, the cylindrical member having a plurality of engagement grooves;
- and
- a rotation-preventing member which is separate from the cylindrical member and is disposed so as to face an interior of the guide hole, the rotation-preventing member being inserted into the engagement grooves to abut against groove edges of the engagement grooves in a rotation direction of the cylindrical member, thereby preventing the cylindrical member from rotation in the guide hole, wherein:
- the lifter guide has a housing formed with the guide hole and a cover attached to an end surface of the housing;
- the housing is formed with a retainer groove which is open to the end surface of the housing and an inner periphery of the guide hole;
- and
- the rotation-preventing member is inserted into the retainer groove and an end surface opening of the retainer groove is closed by the cover, thereby being prevented from dropping out of the retainer groove.
4 more elements
A lifter structure comprising:
- a cylindrical member configured to be reciprocally slid in a guide hole of a lifter guide according to rotation of a cam, the cylindrical member having a plurality of engagement grooves;
- and
- a rotation-preventing member which is separate from the cylindrical member and is disposed so as to face an interior of the guide hole, the rotation-preventing member being inserted into the engagement grooves to abut against groove edges of the engagement grooves in a rotation direction of the cylindrical member, thereby preventing the cylindrical member from rotation in the guide hole, wherein:
- the cylindrical member has a cylindrical peripheral wall formed with the engagement grooves;
- and
- the cylindrical peripheral wall of the cylindrical member has an edge which is continuous with a uniform level over a whole periphery except for an opening of one of the engagement grooves.
3 more elements
Dependencies are inferred from the claim text.