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US 11,628,527 B2Granted
Work support
AssigneeKosmek Ltd.
InventorGaku Yoshimura
Life of this patent
Estimating the term…
Abstract
An ascent-detecting air supply port (33), a descent-detecting air supply port (43), and an air discharge port (44) are provided to a housing (2). The ascent-detecting air supply port (33) is communicatively connected to an air outlet (38) by an ascent-detecting air passage (39). The descent-detecting air supply port (43) is communicatively connected to the air discharge port (44) by a descent-detecting air passage (45). The descent-detecting air passage (45) is closed by a valve mechanism (49) including: a valve surface (50) provided on a piston portion (15); and a valve seat (51) provided on an inner surface of the housing (2), when an advance piston (14) is retracted to a lowered position.
Claims11
A work support comprising:
- a housing;
- a support rod supported by the housing so as to be movable in an up-down direction and configured to be advanced/retracted relative to a workpiece;
- an advance piston including a piston portion hermetically inserted in a tubular hole in a lower portion of the housing so as to be movable in the up-down direction;
- an advance-use pressure chamber provided below the piston portion;
- a biasing means configured to bias the support rod upward;
- and
- a retracting means configured to move the support rod downward via the advance piston,
- the work support further comprising:
- an ascent-detecting air supply port, a descent-detecting air supply port, and an air discharge port, which are provided to the housing;
- an air outlet provided at a leading end portion of the support rod, the air outlet being configured to be closed by the workpiece;
- an ascent-detecting air passage provided in the housing and in the support rod, the ascent-detecting air passage communicatively connecting the ascent-detecting air supply port and the air outlet to each other;
- a descent-detecting air passage provided in the housing, the descent-detecting air passage communicatively connecting the descent-detecting air supply port and the air discharge port to each other;
- and
- a valve mechanism configured to close the descent-detecting air passage when the advance piston is retracted to a lowered position by the retracting means, the valve mechanism including a valve surface provided on the piston portion and a valve seat provided on an inner surface of the housing.
11 more elements
A work support comprising:
- a housing;
- a support rod supported by the housing so as to be movable in an up-down direction and configured to be advanced/retracted relative to a workpiece;
- an advance piston including a piston portion hermetically inserted in a tubular hole in a lower portion of the housing so as to be movable in the up-down direction;
- an advance-use pressure chamber provided below the piston portion;
- a biasing means configured to bias the support rod upward;
- and
- a retracting means configured to move the support rod downward via the advance piston,
- the work support further comprising:
- an ascent-detecting air supply port and a descent-detecting air supply port, which are provided to the housing;
- an air outlet provided at a leading end portion of the support rod, the air outlet being configured to be closed by the workpiece;
- an ascent-detecting air passage provided in the housing and in the support rod, the ascent-detecting air passage communicatively connecting the ascent-detecting air supply port and the air outlet to each other;
- a descent-detecting air passage provided in the housing and in the support rod, the descent-detecting air passage communicatively connecting the descent-detecting air supply port and the air outlet to each other;
- and
- a valve mechanism configured to close the descent-detecting air passage when the advance piston is retracted to a lowered position by the retracting means, the valve mechanism including a valve surface provided on the piston portion and a valve seat provided on an inner surface of the housing.
11 more elements
A work support comprising:
- a housing;
- a support rod supported by the housing so as to be movable in an up-down direction and configured to be advanced/retracted relative to a workpiece;
- an advance piston including a piston portion hermetically inserted in a tubular hole in a lower portion of the housing so as to be movable in the up-down direction;
- an advance-use pressure chamber provided below the piston portion;
- a biasing means configured to bias the support rod upward;
- and
- a retracting means configured to move the support rod downward via the advance piston,
- the work support further comprising:
- an ascent-detecting air supply port, a descent-detecting air supply port, and an air discharge port, which are provided to the housing;
- an air outlet provided at a leading end portion of the support rod, the air outlet being configured to be closed by the workpiece;
- an ascent-detecting air passage provided in the housing and in the support rod, the ascent-detecting air passage communicatively connecting the ascent-detecting air supply port and the air outlet to each other;
- a descent-detecting air passage provided in the housing, the descent-detecting air passage communicatively connecting the descent-detecting air supply port and the air discharge port to each other;
- and
- a valve mechanism configured to close the descent-detecting air passage when the advance piston is retracted to a lowered position by the retracting means, the valve mechanism including a closing surface provided on an outer peripheral surface of the piston portion and a to-be-closed surface provided on an inner peripheral surface of the housing.
11 more elements
Dependencies are inferred from the claim text.