Movable body feeding apparatus
AssigneeTokiwa Corporation
InventorYoshikazu Tani
Life of this patent
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Abstract
To provide a movable body feeding apparatus at a low cost by reducing a number of parts and making manufacturing process such as a molding, an assembling or the like simpler, the apparatus employs a tubular body (8) obtained by integrally forming a thread tube (8a), a ratchet gear (8e) in a side of a main body tube (1) and an elastic body (8b), instead of the conventional structure that a pair of ratchet gears are arranged between an engaging mechanism in a side of a main body tube and a compression coil spring, in which it is necessary to separate the engaging mechanism side and the compression coil spring side, and three parts (a plurality of parts) are required.
Claims6
A movable body feeding apparatus comprising:
- a main body tube;
- a thread tube which is arranged within the main body tube, is engaged with said main body tube so as to be synchronously rotatable and has a female thread formed in an inner peripheral surface thereof;
- a stick-shaped movable body in which a male screw engaging with said female thread is formed in an outer peripheral surface thereof;
- an operating tube which is connected to a rear end side of said main body tube so as to be relatively rotatable and is provided with an engaging portion engaging said movable body so as to be synchronously rotatable and be slidable in an axial direction;
- a pair of ratchet gears which are respectively provided in a side of the threaded tube and a side of the operating tube;
- and
- an elastic body which energizes such that the ratchet gears are engaged with each other;
- said movable body being sequentially fed on the basis of a relative rotation of said main body tube and said operating tube,
- wherein the movable body feeding apparatus is provided with a tubular body in which said thread tube, the ratchet gear in said threaded tube side and said elastic body are integrally formed.
Dependencies are inferred from the claim text.