Carriage for a linear guide system
A carriage for a linear guide system including a rail element having two running surfaces facing towards each other and the carriage movable relative to the rail element in and against a pull-out direction is provided. The carriage includes a base body, a first pair of a first slider and a second slider with sliding surfaces facing away from each other. The sliding surfaces of the first slider, which is moveable relative to the base body in a direction perpendicular to the pull-out direction, and the second slider can each be brought into frictional engagement with one of the running surfaces and a spring element. The spring element is mounted on the base body in such a way that the spring element biases the first slider away from the second slider in the upward direction, and the second slider is fixed to the base body in the upward direction.
1 . A carriage for a linear guide system, wherein the linear guide system comprises a rail element having two running surfaces facing towards each other and the carriage movable relative to the rail element in and against a pull-out direction, wherein the carriage comprises:
a base body,
a first pair of a first slider and a second slider comprising sliding surfaces facing away from each other, wherein the sliding surfaces of the first slider and the second slider can each be brought into frictional engagement with one of the running surfaces, and wherein the first slider is mounted to the base body so as to be movable relative to the base body in an upward direction perpendicular to the pull-out direction, and
a spring element, wherein the spring element is mounted on the base body in such a way that the spring element biases the first slider in the upward direction away from the second slider,
wherein the second slider is fixed to the base body so as to prevent movement relative to the base body in the upward direction.
2 . The carriage according to claim 1 , wherein the sliding surfaces of the first and the second sliders comprise a projection relative to the base body, so that when the carriage is guided in the rail element, only the sliding surfaces of the first and the second sliders are in frictional engagement with the running surfaces of the rail element.
3 . The carriage according to claim 2 , wherein at least the base body or the first slider are arranged in such a way that the first slider undergoes a travel limitation in the event of spring deflection against a spring force exerted on the first slider in the upward direction, so that the sliding surface of the first slider comprises a projection relative to the base body even in the event of complete compression, so that only the sliding surfaces of the first and second sliders are in frictional engagement with the running surfaces.
4 . The carriage according to claim 1 , wherein at least the sliding surface of the first slider or at least the sliding surface of the second slider consists of a slider material, wherein the slider material is different from a base body material of the base body.
5 . The carriage according to claim 1 , wherein the first slider comprises an elongate extended friction jaw extending in the pull-out direction and at least one guiding pin extending from the friction jaw in the upward direction, wherein the friction jaw comprises the sliding surface, wherein the base body comprises at least one guiding bush extending in the upward direction and being complementary to the guiding pin, wherein the at least one guiding pin engages in the at least one guiding bush, so that the first slider is movably mounted in the upward direction relative to the base body.
6 . The carriage according to claim 5 , wherein the first slider comprises two guiding pins spaced apart in the pull-out direction, wherein the base body comprises two guiding bushes spaced apart in the pull-out direction and wherein the two guiding pins engage in the two guiding bushes, so that the first slider is movably mounted in the upward direction relative to the base body.
7 . The carriage according to claim 6 , wherein a first of the two guiding bushes comprises a circular cross-section and wherein a second of the two guiding bushes comprises a cross-section deviating from a circular shape.
8 . The carriage according to claim 1 , wherein the first slider and the second slider are identical parts.
9 . The carriage according to claim 1 , wherein the second slider comprises an elongate extended friction jaw extending in the pull-out direction and at least one guiding pin extending from the friction jaw in the upward direction, wherein the friction jaw comprises the sliding surface, wherein the base body comprises at least one clamping bush extending in the upward direction, wherein the guiding pin and the clamping bush form an interference fit and wherein the at least one guiding pin engages in the at least one clamping bush, so that the second slider is fixed to the base body in the upward direction.
10 . The carriage according to claim 1 , wherein the spring element is supported on the first slider and on the second slider.
11 . The carriage according to claim 10 , wherein the first slider comprises an elongated friction jaw extending in the pull-out direction and a first support pin extending in the upward direction from the friction jaw, wherein the second slider comprises an elongated friction jaw extending in the pull-out direction and a first support pin extending in the upward direction from the friction jaw, wherein the spring element is a coil spring and wherein the first support pin and the second support pin extend from opposite sides into the coil spring.
12 . The carriage according to claim 1 , wherein
at least the base body or the first slider comprises a clearance reducing means,
wherein the clearance reducing means is arranged in such a way that the first slider is mounted on the base body substantially free of play, so that at least
a rotational movement of the base body relative to the first slider about an axis of rotation parallel to the upward direction is blocked by the clearance reducing means
or
a rotational movement of the base body relative to the first slider about an axis of rotation perpendicular to the upward direction and the pull-out direction is blocked by the clearance reducing means.
13 . The carriage according to claim 1 , wherein the carriage comprises a second pair of a third slider and a fourth slider with sliding surfaces facing away from each other.
14 . The carriage according to claim 13 , wherein the first, second, third and fourth sliders are identical parts.
15 . A linear guide system comprising
a rail element comprising two mutually facing running surface, and
the carriage according to claim 1 ,
wherein the carriage and the rail element are linearly displaceable relative to each other in and against the pull-out direction, and
wherein the first slider and the second slider are each in frictional engagement with one of the running surfaces.