Title:
防犯サムターン
Document Type and Number:
Japanese Patent JP7149204
Kind Code:
B2
Abstract:
To improve operability when a crime prevention thumb-turn is erroneously operated from an indoor side.SOLUTION: Included is an engaging element 44 which is supported so as to be engaged with a fixed cylinder 20 in the circumferential direction in the case of an illegal operation for applying an input torque to a knob 10 in a state in which a push button 13 is not pushed to a push position, and is arranged so as to be allowed to move to a release position where the push button is not engaged with the fixed cylinder 20 in the circumferential direction in the case of a normal operation. Rotation of the knob 10 and a thumb turn shaft 30 is prevented due to an engagement of the fixed cylinder 20 and the engaging element 44. The fixed cylinder 20 and the engaging element 44 are configured to convert an input torque applied to the knob 10 to apply a pushing force in a direction of disengaging the engaging element 44. When the push button 13 is pushed to the push position from the state in which the engagement is established against the input torque through the illegal operation, the engaging element 44 is moved to the release position by the push force.SELECTED DRAWING: Figure 1
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Inventors:
Akihiro Fukui
Nakatomo
Nakatomo
Application Number:
JP2019035969A
Publication Date:
October 06, 2022
Filing Date:
February 28, 2019
Export Citation:
Assignee:
Shibutani Co., Ltd.
International Classes:
E05B13/08
Domestic Patent References:
| JP200723761A | ||||
| JP2005171750A | ||||
| JP201332619A |
Attorney, Agent or Firm:
Naoya Kamada
Bunji Kamata
Yaichiro Nakatani
Mitsuhiro Tobinaga
Bunji Kamata
Yaichiro Nakatani
Mitsuhiro Tobinaga