Passenger vehicle safety belt winding device with means for detecting the pulled-out length of a belt

Claim 2

A passenger vehicle safety belt winding device comprising a frame, a shaft rotatably mounted on the frame and fixedly securing one end of a belt adapted to be wound thereon, a spring constantly urging the shaft in one direction of rotation to wind the belt onto the shaft, and means for detecting the pulled-out length of the belt, the detecting means including a kick gear rigidly mounted on the shaft and having a single transfer tooth at the periphery thereof, a pinion gear rotatably mounted on the frame and having at least the number of teeth corresponding to the number of rotations of the shaft required to pull out the full length of the belt from the shaft, the pinion gear being positioned to engage the transfer tooth of the kick gear once during each revolUtion of the kick gear for rotation one tooth position by the kick gear such that the rotational position of the pinion gear corresponds to the number of revolutions of the shaft, means for permitting rotation of the pinion gear upon engagement and rotation thereof by the kick gear and for maintaining the pinion gear in a stationary condition when the pinion gear is out of engagement with the kick gear, a cam rigidly mounted on the pinion gear and having large and small diameter portions, the large diameter portion having a circumferential length corresponding to a predetermined number of teeth of the pinion gear, and a switch having a push button positioned for engagement with the large diameter portion of the cam for controlling the operation of a warning means connected with the switch, the large diameter portion of the cam engaging the push button when a predetermined number of revolutions of the shaft corresponding to a predetermined pulled-out length of the belt has been attained.

Claim 3

A passenger vehicle safety belt winding device as defined in claim 1, wherein the means for maintaining the pinion gear in a stationary condition comprises a spring plate secured at one end to the frame and constantly urging the other end thereof into contact with the pinion gear.

Claim 4

A passenger vehicle safety belt winding device as defined in claim 1, wherein the kick gear has a circular periphery with the transfer tooth extending therebeyond, and the means for maintaining the pinion gear in a stationary condition comprises a disk fixedly attached to the pinion gear and having an outer periphery forming a continuous series of concave arcs for engaging the circular periphery of the kick gear, the kick gear being provided with a cutout portion undercut of the transfer tooth for providing a clearance to the extremity of the arc portions of the disk when the transfer tooth engages the pinion gear.

Claim 5

A passenger vehicle safety belt winding device comprising a frame, a shaft rotatably mounted on the frame and securing one end of a belt adapted to be wound thereon, a spring constantly urging the shaft in one direction of rotation to wind the belt onto the shaft, and means for indicating the withdrawal from the shaft of a predetermined length of the belt sufficient to fasten a passenger in a seat of the vehicle, said indicating means including a kick gear rigidly mounted on the shaft and having a single transfer tooth at the periphery thereof, the kick gear rotating one revolution for each revolution of the shaft, a pinion gear rotatably mounted on the frame and having at least the number of teeth corresponding to the number of revolutions of the shaft required to withdraw the full length of the belt from the shaft, the pinion gear being positioned to engage the transfer tooth of the kick gear once during each revolution of the kick gear for rotation one tooth position by the kick gear such that the rotational position of the pinion gear corresponds to the number of revolutions of the shaft, means for permitting rotation of the pinion gear upon engagement and rotation thereof by the kick gear and for maintaining the pinion gear in a stationary condition when the pinion gear is out of engagement with the kick gear, a cam rigidly mounted on the pinion gear and having a large and a small diameter portion, the small diameter portion having a circumferential length corresponding to the number of teeth representing the number of revolutions of the shaft corresponding to the predetermined length of the belt, and switch means positioned approximate to the cam and arranged for engagement by the large diameter portion of the cam upon attainment of the predetermined length of the belt for controlling the operation of a warning means.

Claim 6

A passenger vehicle safety belt winding device comprising a frame, a shaft rotatably mounted on the frame and securing one end of a belt adapted to be wound thereon, a spring constantly urging the shaft in one direction of rotation to wind the belt onto the shaft, and means for indicating the withdrawal from the shaft of a predetermined length of the belt sufficient to fasten a passenger in a seat of the vehicle, said indicating means including a kick gear rigidly mounted on the shaft and having a single transfer tooth at the periphery thereof, the kick gear rotating one revolution for each revolution of the shaft, a pinion gear rotatably mounted on the frame and having at least the number of teeth corresponding to the number of revolutions of the shaft required to withdraw the full length of the belt from the shaft, the pinion gear being positioned to engage the transfer tooth of the kick gear once during each revolution of the kick gear for rotation one tooth position by the kick gear such that the rotational position of the pinion gear corresponds to the number of revolutions of the shaft, means for permitting rotation of the pinion gear upon engagement and rotation thereof by the kick gear and for maintaining the pinion gear in a stationary condition when the pinion gear is out of engagement with the kick gear, a cam rigidly mounted on the pinion gear and having a large and a small diameter portion, the small diameter portion having a circumferential length corresponding to the number of teeth representing the number of revolutions of the shaft corresponding to the predetermined length of the belt, and switch means positioned approximate to the cam and arranged for engagement by the large diameter portion of the cam upon attainment of the predetermined length of the belt for controlling the operation of a warning means.

Claim 7

A passenger safety belt winding device as defined in claim 4, wherein the means for maintaining the pinion gear in a stationary condition comprises a spring plate secured at one end to the frame and constantly urging the other end thereof into contAct with the pinion gear.

Claim 8

A passenger safety belt winding device as defined in claim 4, wherein the kick gear has a circular periphery with the transfer tooth extending therebeyond, and the means for maintaining the pinion gear in a stationary condition includes a disk fixedly attached to the pinion gear and having an outer periphery forming a continuous series of concave arcs for engaging the circular periphery of the kick gear, the kick gear being provided with a cutout portion in the region of the transfer tooth for providing a clearance to the extremity of the arc portions of the disk when the transfer tooth engages the pinion gear.