DEVICE AND METHOD FOR MEASURING SNAP MEMBER DETACHING FORCE, AND SNAP CHUCK
First Claim
1. A device which measures force to detach a snap member attached to cloth, the device comprising:
- cloth holding device holding the cloth on the periphery of the snap member attached to the cloth;
snap chucking device chucking the snap member from its side portion by a plurality of chucking portions;
torque applying device means applying torque to the snap member chucked by the snap chucking device;
tension device relatively pulling the snap member chucked by the snap chucking device from the cloth held by the cloth holding device; and
measuring device measuring tensile force provided by the tension device.
1 Assignment
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Accused Products
Abstract
A device and method for measuring snap member detaching force, the snap member detaching force measurement device includes a cloth holding unit for holding cloth on the periphery of the snap member attached to the cloth; a snap chucking unit for chucking the snap member from its side portion by a plurality of chucking portions of the unit; a torque gauge for applying torque to the snap member chucked by the chucking portions; a tension unit for relatively pulling the snap member from the cloth; and a tensile force gauge for measuring tensile force provided by the tension unit. The snap chucking unit includes turning arms which can lock, with constant chucking force, the state of the snap member chucked by the chucking portions.
5 Citations
13 Claims
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1. A device which measures force to detach a snap member attached to cloth, the device comprising:
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cloth holding device holding the cloth on the periphery of the snap member attached to the cloth; snap chucking device chucking the snap member from its side portion by a plurality of chucking portions; torque applying device means applying torque to the snap member chucked by the snap chucking device; tension device relatively pulling the snap member chucked by the snap chucking device from the cloth held by the cloth holding device; and measuring device measuring tensile force provided by the tension device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A snap chuck which chucks a snap member attached to cloth from its side portion, the snap chuck comprising:
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a plurality of chucking members for chucking the side portion of the snap member by chucking portions of the chucking members; and a lock mechanism which can lock, with constant chucking force, the state of the snap member chucked by the chucking portions of the chucking members. - View Dependent Claims (8, 9, 10, 11)
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12. A method of measuring force to detach a snap member attached to cloth, the method comprising the steps of:
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holding the cloth on the periphery of the snap member attached to the cloth; applying torque to the snap member the cloth around which is held; relatively pulling the snap member from the cloth therearound after cancellation of the torque; and measuring the tensile force. - View Dependent Claims (13)
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Specification