Title:
RETRACTION DEVICE AND FEEDING MECHANISM HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2019/105347
Kind Code:
A1
Abstract:
A retraction device (100) and feeding mechanism (1000), wherein the retraction device (100) comprises a main shaft (10) and an operating unit (20); the main shaft (10) is movable along the axis thereof and is provided with a first end; the operating unit (20) comprises a pull rod (22) and a movable component (24), wherein the pull rod (22) is provided with a first end and a second end, the movable component (24) defines a stepped groove (242), the first end of the pull rod (22) is connected to the first end of the main shaft (10), and the second end of the pull rod (22) is accommodated in the groove (242); the groove (242) comprises first steps (2421) and second steps (2422) arranged in a first direction and an inclined surface (2423) connected to the first steps (2421) and the second steps (2422), and the height of the second steps (2422) along the axial direction of the main shaft (10) is greater than that of the first steps (2421); the movable component (24) is slidable along the first direction relative to the pull rod (22) so as to allow the pull rod (22) to switch between the first steps (2421) and second steps (2422) by means the inclined surface (2423), thus allowing the main shaft (10) to switch between a retraction position and a release position; when the main shaft (10) is in the retraction position, the pull rod (22) is accommodated in the second steps (2422), and when in the release position, the pull rod (22) is accommodated in the first steps (2421).
Inventors:
FAN ZHEGUANG (CN)
LIANG XIANG (CN)
ZHOU GANG (CN)
LIANG XIANG (CN)
ZHOU GANG (CN)
Application Number:
PCT/CN2018/117725
Publication Date:
June 06, 2019
Filing Date:
November 27, 2018
Export Citation:
Assignee:
LEICA MICROSYSTEMS LTD SHANGHAI (CN)
International Classes:
G01N1/06; B26D7/06
Foreign References:
| CN106239574A | 2016-12-21 | |||
| CN201069416Y | 2008-06-04 | |||
| US20170115189A1 | 2017-04-27 | |||
| US4625608A | 1986-12-02 |
Other References:
See also references of EP 3702753A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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