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US 5,473,992 AGranted
Braking apparatus and a drive unit equipped with said apparatus and a linear motor
AssigneeNippon Thompson Co., Ltd.
InventorSeiji Takei
Life of this patent
Estimating the term…
Abstract
A small braking apparatus, which is able to completely and suddenly stop a moving portion such as a linear direct current motor at a desired location, is described, together with a drive unit equipped with the braking apparatus. The braking effect is obtained by providing a rotary member on a slider to move along a long guiding member, and providing a driving device which causes a braking member, which performs a braking action by engaging with said rotary member, to engage and move away from said rotary member.
Claims5
A linear motor drive unit, comprising;
- a long guiding member a slider movably coupled to said guiding member for relative linear motion, said guiding member and said slider being associated with a primary side and a secondary side of the linear motor, a braking apparatus which brakes the relative motion of said guiding member and said slider, said braking apparatus comprising:
- a rotary member provided so as to roll in continuous contact with said guiding member as said slider performs relative motion with respect to said guiding member;
- a braking member freely movable between a braking action location at which said braking member engages with said rotary member and a non-braking action location at which said braking member releases from said braking action location;
- and a driving device which actuates said braking member.
1 more element
Dependencies are inferred from the claim text.