Title:
DIGITAL MEASURING TAPE
Document Type and Number:
WIPO Patent Application WO/2019/024133
Kind Code:
A1
Abstract:
A digital measuring tape comprises a housing (10), a measuring blade (20), and a measuring blade casing (30). A reel (11) is provided inside the housing (10). The measuring blade casing (30) is rotatably mounted on the reel (11). The measuring blade (20) is wound around the measuring blade casing (30). A hook (21) is provided at a front end of the measuring blade (20). The digital measuring tape further comprises a marked disc (40), mark detectors (50, 200, 300), a circuit board (60), and a display screen (70). The marked disc (40) is rotatably fixed on the measuring blade casing (30). Marks (41) are provided on the circumference of the marked disc (40). Rotation of the marked disc (40) and the marks (41) causes the mark detectors (50, 200, 300) to generate a detection signal for the rotation of the marked disc (40), and a length of the exposed measuring blade (20) is calculated by the circuit board (60) on the basis of the detection signal, and displayed on the display screen (70). The digital measuring tape performs accurate measurement in scenarios requiring highly precise measurements, and the measurements provided are convenient to read.
Inventors:
WANG ZHENXING (CN)
Application Number:
PCT/CN2017/097470
Publication Date:
February 07, 2019
Filing Date:
August 15, 2017
Export Citation:
Assignee:
WANG ZHENXING (CN)
International Classes:
G01B3/10
Foreign References:
| CN204963696U | 2016-01-13 | |||
| US4181960A | 1980-01-01 | |||
| CN2672613Y | 2005-01-19 | |||
| CN204881503U | 2015-12-16 | |||
| US4242574A | 1980-12-30 | |||
| CN2823973Y | 2006-10-04 |
Attorney, Agent or Firm:
SHENZHEN KAIDA PARTNERS INTELLECTUAL PROPERTY LAW FIRM (CN)
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