Structure to be grasped
View Patent ↗A structure to be grasped in which a member can be grasped by a pair of grasping portions having respective grasping recesses of the same shape. A clutch member has rotation-limiting ribs and seating ribs formed on and projecting from a clutch body, and each set of a rotation-limiting rib and a seating rib are arranged on an imaginary straight line L 1 . When a pair of chuck members of a grasping device are moved away from each other along an imaginary straight line L 2 coinciding with the imaginary straight line L 1 , the clutch member is grasped by the pair of chuck members. Although the rotation-limiting ribs and the seating ribs are different in shape from each other in order to meet their respective functional requirements, chucked portions of the rotation-limiting rib and seating rib, for fitting into the respective grasping recesses of the chuck members, have substantially the same shape.
1. A structure to be grasped of a member including a set of two projecting portions which are formed on and project from a body portion thereof, and are disposed on an imaginary straight line, wherein a pair of grasping portions of a grasping device are moved away from each other along said imaginary straight line to abut respectively against said projecting portions, so that said member is grasped by said grasping device;
wherein one of said projecting portions includes a first grasped portion which can be fitted into a grasping recess, formed on one of said grasping portions, so as to be prevented from moving in a direction perpendicular to said imaginary straight line, and a first function portion which is integral with said first grasped portion, and is so formed as to perform a required function; and
wherein the other of said projecting portions is different in shape from said one projecting portion but includes a second grasped portion which is substantially similar in shape to said first grasped portion.
2. The structure according to claim 1 , in which each of said first and second grasped portions has a substantially rectangular shape when viewed from above, and contacts said grasping portion at three surfaces thereof.
3. The structure according to claim 2 , in which said body portion is formed into a substantially cylindrical shape, and said set of two projecting portions are arranged in a diametrical orientation on said body portion; and
said first and second grasped portions project from an end surface of said body portion, and are fitted respectively into said grasping recesses when said pair of grasping portions are moved outwards radially from a region close to the axial side of said body portion towards the periphery of said body portion.
4. The structure according to claim 3 , in which said first function portion extends outwards radially from said body portion, and is inserted into a first groove in another member on which said member is to be mounted.
5. The structure according to claim 4 , in which a second function portion is formed integrally with said second grasped portion, and said second function portion extends outwards radially from said body portion, and is inserted into a second groove in said other member.
6. The structure according to claim 1 , in which each of said first and second grasped portions has a substantially trapezoidal shape when viewed from above, and contacts said grasping portion at two oblique surfaces thereof inclined relative to said imaginary straight line.
7. The structure according to claim 6 , in which said body portion is formed into a substantially cylindrical shape, and said set of two projecting portions are arranged in a diametrical orientation on said body portion; and
said first and second grasped portions project from an end surface of said body portion, and are fitted respectively into said grasping recesses when said pair of grasping portions are moved outwards radially from the axial side of said body portion towards periphery of said body portion.
8. The structure according to claim 7 , in which said first function portion extends outwards radially from said body portion, and is inserted into a first groove in another member on which said member is to be mounted.
9. The structure according to claim 8 , in which a second function portion is formed integrally with said second grasped portion, and said second function portion extends outwards radially from said body portion, and is inserted in a second groove in said other member.
10. The structure according to claim 1 , in which said body portion is formed into a substantially cylindrical shape, and said set of two projecting portions are arranged in a diametrical orientation on said body portion; and
said first and second grasped portions project from an end surface of said body portion, and are fitted respectively into said grasping recesses when said pair of grasping portions are moved radially outwards from the axial side of said body portion towards the periphery of said body portion.
11. The structure according to claim 10 , which said first function portion extends outwards radially from said body portion, and is inserted into a first groove in another member on which said member is to be mounted.
12. The structure according to claim 11 , in which a second function portion is formed integrally with said second grasped portion, and said second function portion extends outwards radially from said body portion, and is inserted in a second groove in said other member.