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Mechanical Sciences An open-access journal for theoretical and applied mechanics

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Mech. Sci., 9, 189-199, 2018
https://doi.org/10.5194/ms-9-189-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
24 Apr 2018
Structural analysis of traditional Chinese hidden-keyhole padlocks
Kuo-Hung Hsiao Collections and Research Division, National Science and Technology Museum, Kaohsiung 80765, Taiwan
Abstract. Hidden-keyhole padlocks use a plate or some other means to cover the keyhole and are a category of traditional Chinese padlocks. The topological structures of traditional hidden-keyhole padlocks have distinct arrangements in the operation. Therefore, they are reconfigurable mechanisms. This paper presents the structures of traditional Chinese hidden-keyhole padlocks, which were popular and had abundant types. The structural characteristics of hidden-keyhole padlocks are described first. Then, the representation for kinematic pairs appeared in operating steps is introduced. The variable chains of hidden-keyhole padlocks are presented by using the representation of kinematic pairs, from which all topology variabilities of hidden-keyhole padlocks in the operation are derived. Four main types of hidden-keyhole padlocks are provided as examples to illustrate the configuration transformations. This work presents a useful procedure to indicate and analyze the topology variabilities of hidden-keyhole padlocks.
Citation: Hsiao, K.-H.: Structural analysis of traditional Chinese hidden-keyhole padlocks, Mech. Sci., 9, 189-199, https://doi.org/10.5194/ms-9-189-2018, 2018.
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Short summary
Hidden-keyhole padlocks are reconfigurable mechanisms and a category of ancient Chinese locks. This work presents a useful procedure to indicate and analyze the topology variabilities of hidden-keyhole padlocks. The variable chains of hidden-keyhole padlocks are presented by using the representation of kinematic pairs, from which all topology variabilities of padlocks in the operation are derived. Four main types of hidden-keyhole padlocks are provided as examples to illustrate the procedure.
Hidden-keyhole padlocks are reconfigurable mechanisms and a category of ancient Chinese locks....
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