Linear movement device with omega drive
A technology of linear motion and drive wheel, which is applied in the direction of linear motion bearings, transmission devices, friction transmission devices, etc., and can solve the problem of small stiffness of the sliding seat
Active Publication Date: 2011-11-09
ROBERT BOSCH GMBH
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Problems solved by technology
[0004] The disadvantage of the known linear motion device is that the carriage has only low stiffness
Method used
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Embodiment Construction
[0034] figure 1 A perspective view of the linear motion device 10 according to the invention is shown. The linear motion device 10 comprises a housing 90 which extends in the longitudinal direction 11 . A carriage 20 is mounted on the housing 90 so as to be movable in the longitudinal direction 11 . The base body 100 of the housing 90 is produced from aluminum in an extrusion process, whereby the housing 90 has a constant, substantially U-shaped cross-sectional shape substantially over its entire length. The guide cavity enclosed by the housing 90 is covered by a toothed belt 120 . The two ends of the toothed belt 120 are respectively fixed on the front end and the rear end of the housing 90 by tensioning devices 123, whereby the toothed belt 120 can be placed under a given tension. The front tensioner required for this is in the figure 1 not shown in There is a narrow unavoidable open gap 15 for both sides of the toothed belt respectively, and this gap also has the aid...
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The invention discloses a linear movement device (10) with an omega drive. The linear movement device (10) has a housing (90) and a carriage (00) which can move in a longitudinal direction (11) with respect to the housing (90), wherein the housing bounds a guide cavity (102), wherein the guide cavity (102) is covered with a toothed belt (120) which extends in the longitudinal direction, wherein the toothed belt (120) is attached at both ends to the housing (90) with the result that said toothed belt defines a toothed belt plane (121), wherein at least one separate guide rail (92) which extends in the longitudinal direction (11) is arranged within the guide cavity (102), on which guide rail at least one separate guiding carriage (23) is mounted in a longitudinally movable fashion, which guiding carriage (23) is permanently connected to the carriage (20), wherein a first and a second deflection wheel, which deflect the toothed belt (120) out of the toothed belt plane (121), are rotatably attached to the carriage (20), wherein a rotatable drive wheel (60), which is in drive-transmitting engagement with the toothed belt (120), is arranged between the first and the second deflection wheels. The carriage (20) has a carriage base body (30) which is embodied as a closed tube essentially over its entire length, with the result that it bounds a carriage cavity (32), wherein the guiding carriage (23) is attached to the outside of the carriage base body (30), wherein the toothed belt (120) is guided through the carriage cavity (32), and wherein the first and second deflection wheels (80a; 80b) and the drive wheel (60) are arranged within the carriage cavity (32).
Description
technical field [0001] The invention relates to a linear motion device. Background technique [0002] A linear motion device is known from DE 20115647 U1. According to DE 20115647U1 the figure 2 , The linear motion device includes a housing 9, a slide 10; 11 is supported on the housing in a longitudinally movable manner. The housing is extruded from aluminum, wherein the housing has an essentially U-shaped cross-sectional shape. The guide cavity inside the housing is covered by a toothed belt 8 which extends over the entire length of the housing, the two ends of which are fastened to the housing. Corresponding fastening devices 3 ; 4 ; 5 allow the toothed belt to be brought to the desired tension, so that it is just tensioned and defines a toothed belt plane. A plurality of guide rails in the shape of circular steel bars are arranged inside the guide cavity. A guide carriage 15 is mounted longitudinally movable on the guide rail via rotatable rollers rolling on the guid...
Claims
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IPC IPC(8): F16H19/06F16C29/08
CPCF16H2019/0668F16H19/06F16H2019/0613Y10T74/1884Y10T74/18848
Inventor S·鲍尔A·贝恩德S·安胡特
Owner ROBERT BOSCH GMBH