Testing apparatus of steering system
First Claim
1. A testing apparatus of a steering system, having a first loading device for applying, to the steering system, load in a direction in which steering reaction force acts, and a second loading device for applying, to the steering system, load in a direction in which road-surface reaction force acts, said testing apparatus comprising:
- first links formed from a pair of parallel link portions; and
second links which include a pair of parallel link portions disposed in a direction crossing said first links, each of the pair of parallel link portions of said second links being connected to said first links at two points such that one of said first links can be displaced with respect to the other in the direction in which road-surface reaction force acts and said first links can swing,wherein the second loading device and a wheel-side connecting portion of the steering system are connected to the one of said first links;
the first loading device is connected to the other of said first links via a connecting mechanism which allows the other of said first links to swing about a center of rotation in a central portion of said other of said first links between two connecting points of said second links to said other of said first links, due to loading of the first loading device; and
a first load detector is mounted to one of said second links and a second load detector is mounted to the other of said second links.
1 Assignment
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Accused Products
Abstract
A testing apparatus of a steering system is provided to correctly detect load in a direction in which steering reaction force acts, the load being applied to the steering system. A tie rod connected to a rack of the steering system is connected to a steering-angle vibrating unit via a torque lever, relay links and a drive link. A front link of the drive link and a link disposed parallel to the torque lever are provided in a swingable manner. Both ends of each of the relay links are respectively connected to the torque lever and the link disposed parallel to the torque lever, and the torque lever is swingable with respect to the link in a direction in which road-surface reaction force acts. Transducers are provided at intermediate portions of the relay links, respectively. A vertically-vibrating unit is connected via the torque lever to the rack.
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Citations
17 Claims
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1. A testing apparatus of a steering system, having a first loading device for applying, to the steering system, load in a direction in which steering reaction force acts, and a second loading device for applying, to the steering system, load in a direction in which road-surface reaction force acts, said testing apparatus comprising:
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first links formed from a pair of parallel link portions; and second links which include a pair of parallel link portions disposed in a direction crossing said first links, each of the pair of parallel link portions of said second links being connected to said first links at two points such that one of said first links can be displaced with respect to the other in the direction in which road-surface reaction force acts and said first links can swing, wherein the second loading device and a wheel-side connecting portion of the steering system are connected to the one of said first links; the first loading device is connected to the other of said first links via a connecting mechanism which allows the other of said first links to swing about a center of rotation in a central portion of said other of said first links between two connecting points of said second links to said other of said first links, due to loading of the first loading device; and a first load detector is mounted to one of said second links and a second load detector is mounted to the other of said second links. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A testing apparatus of a steering system, having a steering-angle vibrating unit for applying, to the steering system, load in a direction in which steering reaction force acts, and a vertically-vibrating unit for applying, to the steering system, load in a direction in which road-surface reaction force acts, said testing apparatus comprising:
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first links formed from a pair of parallel link portions; and second links which include a pair of parallel link portions disposed in a direction crossing said first links, each of the pair of parallel link portions of said second links being connected to said first links at two points such that one of said first links can be displaced with respect to the other in the direction in which road-surface reaction force acts and said first links can swing, wherein the vertically-vibrating unit is connected to the one of said first links via a vibrating shaft of which axial direction coincides with a vertical direction and which is integrally connected with the one of said first links at a substantially central portion in a longitudinal direction of the one of said first links, and a wheel-side connecting portion of the steering system is connected to a rear end portion of the one of said first links; the steering-angle vibrating unit is connected to the other of said first links via a connecting mechanism which allows the other of said first links to swing about a center of rotation in a central portion of the other of said first links between the two connecting points of said second links to the other of said first links, due to load of the steering-angle vibrating unit; and transducers for detecting load are mounted to one and the other of said second links, respectively, and force in the direction in which steering reaction force acts is detected from a difference of respective outputs of the transducers. - View Dependent Claims (15, 16, 17)
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Specification