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US 2002/0157561 A1Published application
Rail switch lock for points tongues
AssigneeSchreck-Mieves GmbH
InventorsDieter Grunwald, Jens Bocker
Life of this patent
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AssigneeSchreck-Mieves GmbH
InventorsDieter Grunwald, Jens Bocker
Estimating the term…
This invention relates to a switch lock for switch tongues (2, 3) having at least one locking piece (6, 7) for attaching to a stock rail (4, 5), having at least one switch tongue attachment (8, 9) for attaching to a switch tongue (2, 3) and having a slide rod (10), wherein the adjustment distance of the slide rod (10) is greater than the switch tongue impact (Z) of the switch tongues (2, 3), and in its end position, the switch tongue (2, 3) is locked on the stock rail (4, 5), wherein at least one bearing roller (17, 18) is provided on the locking piece, and wherein the slide rod (10) can be moved relative to the locking piece (6, 7) by means of the bearing rollers (17, 18) to adjust the switch tongue (2, 3). In order to make a switch lock available wherein only minor actuating forces which are essentially constant are necessary and wherein the maintenance and lubrication costs are minimized, it is provided according to this invention that an angle lever (19, 20) be provided, said angle lever being connected to both the slide rod (10) and the switch tongue attachment (8, 9) and rolling on the bearing roller (17, 18), and the angle lever (19, 20) work together with the bearing roller (17, 18) for locking and/or adjusting the switch tongue (2, 3), so that the angle lever (19, 20) pivots with its free end about the articulation point on the switch tongue attachment (8, 9) in adjustment of the slide rod (10) in the locked state of the switch tongue (2, 3).
A switch lock for switch tongues (2, 3) having at least one locking piece (6, 7) for attaching to a stock rail (4, 5), having at least one switch tongue attachment (8, 9) for attaching to a switch tongue (2, 3) and having a slide rod (10), wherein the adjustment distance of the slide rod (10) is greater than the switch tongue impact (Z) of the switch tongues (2, 3), and the switch tongue (2, 3) in its end position is locked on the stock rail (4, 5), whereby at least one bearing roller (17, 18) is provided on the locking piece, and the slide rod (10) can be moved relative to the locking piece (6, 7) by means of the bearing rollers (17, 18) to adjust the switch tongue (2, 3), characterized in that an angle lever (19, 20) is provided, being connected to the slide rod (10) as well as to the switch tongue attachment (8, 9) and rolling on the bearing roller (17, 18), and the angle lever (19, 20) works together with the bearing roller (17, 18) to lock and/or to adjust the switch tongue (2, 3) so that the angle lever (19, 20) pivots with its free end about the articulation point on the switch tongue attachment (8, 9) in adjusting the slide rod (10) in the locked state of the switch tongue (2, 3).
Switch lock according to claim I or 2, characterized in that in the adjustment of the slide rod (10), the angle lever (19, 20) rolls on the bearing roller (17, 18) during the adjustment of the switch tongue (2, 3) with a second running surface (24) which is provided on the angle lever (19, 20).
Switch lock according to one of the preceding claims, characterized in that the first and the second running surfaces (23, 24) preferably change directly over into one another, and the first and second running surfaces (23, 24) are preferably arranged at an angle of approximately 90° to one another in the area of the first transition (25).
Switch lock according to one of the preceding claims, characterized in that the second running surface (24) is inclined at an angle, starting from the transition (25), so that the switch tongue (2, 3) is raised during adjustment.
Switch lock according to one of the preceding claims, characterized in that upon reaching the open end position of the switch tongue (2, 3), the bearing roller (17, 18) strikes the leg area of the angle lever (19, 20).
Switch lock according to one of the preceding claims, characterized in that a projection (26) is provided on the free end of the angle lever (19, 20) on the end of the first running surface (23), and it functions as a stop upon reaching the locked end position.
Switch lock according to one of the preceding claims, characterized in that pin joints (27) having self-lubricating bushings are provided on the switch tongue attachment (8, 9) and/or on the slide rod (10) for the articulated connection of the angle lever (19, 20).
Switch lock according to one of the preceding claims, characterized in that the bearing roller (17, 18) is mounted on a self-lubricating bushing on the locking part (6, 7).
Switch lock according to one of the preceding claims, characterized in that the width (B) of the bearing roller (17, 18) is preferably several times greater than the thickness (d) of the angle lever (19, 20).
Switch lock according to one of the preceding claims, characterized in that the bearing roller (17, 18) is provided with an adjustment device (29) for adjusting the bearing roller (17, 18) in height and/or in distance from the stock rail (4, 5);
Switch lock according to one of the preceding claims, characterized in that the switch tongue impact (Z) amounts to at least 150 mm, preferably approximately 160 mm, and the adjustment distance of the slide rod (10) amounts to at least 200 mm, preferably approximately 220 mm.
Dependencies are inferred from the claim text.