Emergency locking reel for belts
AssigneeRepco Limited
InventorEwen P. Kilpatrick
Life of this patent
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AssigneeRepco Limited
InventorEwen P. Kilpatrick
Estimating the term…
An emergency locking reel for a safety belt and being of the kind having a frame which is securable to a support, a spool rotatably mounted on that frame, and locking means operable to prevent rotation of that spool in a belt unwinding direction. The locking means comprises a toothed ring secured to the frame and a pawl rotatable with the spool and movable relative thereto to engage the ring. According to the invention, an inertia plate is provided separate from the pawl and is mounted on the spool spindle for limited relative rotation. A ratchet wheel is connected to the pawl for rotation therewith and carries a detent which responds to relative rotation between the wheel and inertia plate to stop rotation of the wheel and thereby cause the pawl to engage the ring. A spring resists that relative rotation between the wheel and inertia plate. The housing for the locking means is symmetrical about a plane which contains the spindle axis and a sensor responsive to vehicle deceleration is also located on that plane. The sensor is securable to the housing in any of a plurality of positions without disturbing the aforementioned symmetry. Furthermore, each tooth of the locking ring is symmetrical about a plane containing the spindle axis. An end plate of the housing has, as integral parts, a bearing for the spindle and locating means for the locking ring and sensor respectively, thereby simplifying assembly of the reel. A wedge-type retainer secures an end of the belt to the reel by locating in a slot of the spool and clamping the belt in three separate zones.
An emergency locking reel for a safety belt including a frame, a spindle rotatably mounted on said frame, a housing secured to said frame and being substantially symmetrical about a plane containing the axis of said spindle, locking means contained within said housing and being operable to prevent rotation of said spindle relative to said frame in one dircetion, a locking ring forming part of said locking means and being secured to said frame against relative movement, the opening through said ring being coaxial with said spindle, a plurality of teeth provided around the periphery of said opening at regularly spaced intervals, each said tooth projecting inwardly towards the axis of said spindle and having a shape which is substantially symmetrical about a plane which contains the spindle axis, a vehicle deceleration responsive sensor which is operable to cause operation of said locking means, and said housing includes a receptacle for part of said sensor and said receptacle being located outwardly of said opening and substantially symmetrical about said housing symmetry plane.
An emergency locking reel for a safety belt including, a frame, a spindle rotatably mounted on said frame, locking means operable to prevent rotation of said spindle relative to said frame in one direction, a housing secured to said frame and containing said locking means, a vehicle deceleration responsive sensor which is operable to cause operation of said locking means and has a part-spherical member, a spherical cavity within said housing which is substantially complementary to the spherical part of said member, said member being securable within said cavity in any one of a range of possible positions relative to said housing, and said position is selected according to the intended disposition of said housing relative to a vehicle to which it is attached in use.
An emergency locking reel for a safety belt including, a frame, a spindle rotatably mounted on said frame, a locking ring secured to said frame against movement relative thereto, a pawl rotatable with said spindle and being operable to engage said locking ring and thereby prevent rotation of said spindle in one direction relative to said frame, a vehicle deceleration responsive sensor operable to cause operation of said pawl, and an end plate attached to said frame and being moulded from a plastics material, said end plate having as integral parts thereof a bearing for said spindle, locating means to position said locking ring relative to said spindle, and further locating means to position said sensor relative to said spindle, wherein an opening through said locking ring is coaxial with said spindle, a plurality of teeth are provided around the periphery of said opening at regularly spaced intervals, and each of said teeth projects inwardly towards the axis of said spindle and has a shape which is substantially symmetrical about a plane which contains the spindle axis, wherein said locating means for the locking ring comprises a series of bars which project outwardly from said end plate in the axial direction of said spindle and each of which engages between a respective pair of adjacent teeth of said locking ring.
An emergency locking reel for a safety belt including, a frame, a spindle rotatably mounted on said frame, a locking ring secured to said frame against movement relative thereto, a pawl rotatable with said spindle and being operable to engage said locking ring and thereby prevent rotation of said spindle in one direction relative to said frame, a vehicle deceleration responsive sensor operable to cause operation of said pawl, and an end plate attached to said frame and being moulded from a plastics material, said end plate having as integral parts thereof a bearing for said spindle. locating means to position said locking ring relative to said spindle, and further locating means to position said sensor relative to said spindle, wherein said further locating means includes a spherical recess in said end plate, said sensor includes a part-spherical member, the spherical part of which is substantidlly complementary to said recess, and said member is securable within said recess in any one of a range of positions relative to said frame, and said position is selected according to the intended disposition of said frame relative to a vehicle to which it is attached in use.
Dependencies are inferred from the claim text.