Title:
WEIGHING SENSOR AND ELECTRONIC BALANCE
Document Type and Number:
WIPO Patent Application WO/2019/109857
Kind Code:
A1
Abstract:
A weighing sensor (10) used in an electronic balance comprises a weighing unit (11), which comprising a load-receiving portion (111), a fixing portion (112) and parallel guiding members (113) for connecting the load-receiving portion (111) and the fixing portion (112) together; a lever (12), wherein one end of the lever (12) is connected to the load-receiving portion (112), and the lever (12) is disposed between the parallel guiding members (113) and the fixing portion (112); and a photoelectric position limiting block (14), wherein a lower portion of the photoelectric position limiting block (14) is connected to the fixing portion (112), an upper portion of the photoelectric position limiting block (14) is provided with a limiting structure (141), and a tail end portion of the other end of the lever (12) is disposed in the limiting structure (141) to limit a deviation of the tail end portion of the other end of the lever (12). A photoelectric position sensor and a stop structure for preventing the tail portion of the lever (12) from being deviated to a relatively deviation are both provided on the photoelectric position limiting block (14) to form an integral structure, and such a weighing sensor has the advantages of a simple structure, convenient to assemble, low cost, etc. An electronic balance comprising the weighing sensor (10) is also provided.
Inventors:
WU CHAO (CN)
LIU BAOHUI (CN)
YANG CHUN (CN)
LIU BAOHUI (CN)
YANG CHUN (CN)
Application Number:
PCT/CN2018/118398
Publication Date:
June 13, 2019
Filing Date:
November 30, 2018
Export Citation:
Assignee:
METTLER TOLEDO INSTRUMENT SHANGHAI COMPANY LTD (CN)
METTLER TOLEDO INT TRADING SHANGHAI CO LTD (CN)
METTLER TOLEDO INT TRADING SHANGHAI CO LTD (CN)
International Classes:
G01G7/02
Foreign References:
CN207556637U | 2018-06-29 | |||
CN105143838A | 2015-12-09 | |||
CN106197624A | 2016-12-07 | |||
CN204854905U | 2015-12-09 | |||
CN203464985U | 2014-03-05 | |||
DE202005002369U1 | 2005-04-21 |
Other References:
See also references of EP 3721184A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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