Scissors Jack
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Software copyright © 2004 by The McGraw-Hill Companies, Inc. All rights reserved.
Info
A scissors jack is used to raise a car for changing tires. Its compact geometry allows easy storage. The gear pairs at the base and top allow the device one degree of freedom. Note that the power screw (a helical joint) is replaced by a sliding joint in this simulation file.
Source
This Working Model file is adapted from Figure P2-8 on p.80 in Design of Machinery, 3rd ed. by Norton, R. L., McGraw-Hill, 2004, and from Figure 3-5 on p.120 in Machine Design-an Integrated Approach, by Norton, R. L., Prentice Hall, 1996.
Credits
This Working Model file was first developed by Jie (Jeff) Yang. These photos were taken by Shih-Lang (Sid) Wang.