Device for locking rod member using lock block
AssigneeKorea Pneumatic System Co., Ltd.
InventorHo-Young Cho
Life of this patent
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Abstract
A device for locking a rod member is provided. The device includes a body section having a vertical hole therein, and a ring-type locking unit and a piston serially arranged along the hole, wherein the rod member is disposed in the hole to be axially movable through the locking unit and the piston. The locking unit may be a lock block including an outer ring having an inclined surface on one side thereof, thereby defining a wedge-type space, an inner ring coaxially disposed in one side of the outer ring and accommodating a pressurizing member interacting with the inclined surface, and a spring disposed in the other side of the outer ring so as to elastically connect the outer ring and the inner ring.
Claims10
A device for locking a rod member, the device comprising:
- a body section (110) having a vertical hole (111) therein, and first and second ring-type locking units and first and second pistons (130, 130a) serially arranged in the hole, wherein the rod member (140) is disposed in the hole to be axially (X-Y) movable through the locking unit and the piston,
- wherein each of the ring-type locking units is a module assembly as a first or second lock block (120, 120a) comprising:
- an outer ring (121) having an inclined surface (122) on one side thereof, thereby defining a wedge-type space (S1) therearound;
- an inner ring (123) coaxially disposed in one side of the outer ring (121) and accommodating a pressurizing member (124) interacting with the inclined surface (122);
- and
- a spring (125) disposed in the other side of the outer ring (121) so as to elastically connect the outer ring (121) and the inner ring (123),
- wherein the rod member (140) is locked and unlocked in such a manner that, when the first and second pistons (130, 130a) move so that the outer ring (121) is moved, the inclined surface (122) engages with and disengages from the pressurizing member (124), enabling the pressurizing member (124) to engage with and disengage from the surface of the rod member (140),
- wherein the first piston (130) and lock block (120), and the second piston (130a) and lock block (120a) are symmetrically disposed on opposite sides with respect to one rod member (140), and
- wherein the first and second pistons (130) and (130a) overlap with each other at opposite closing ends thereof, and a piston packing (134) is provided on the overlapped portion so as to seal the pistons (130) and (130a) from each other.
Dependencies are inferred from the claim text.