Title:
WIRE THREADING DEVICE SUITABLE FOR ELECTRICAL PIPE IN BUILDING
Document Type and Number:
WIPO Patent Application WO/2023/115679
Kind Code:
A1
Abstract:
A wire threading device suitable for an electrical pipe in building, comprising a fan (10), a winding/unwinding main body (20), and a connecting hose (30). A winding state sensing mechanism (140) mainly composed of an elbow combiner (150), a first rotating shaft (160), an elbow combiner lifting spring (170), and a first microswitch (180) is provided in a ventilation bin (40). When a strong wire (120) is tightened, the elbow combiner (150) easily rotates along with the tightening of the strong wire (120), and the strong wire (120) timely touches the first microswitch (180) when being tightened, such that the first microswitch (180) can timely disconnect a power supply circuit of a reel driving device (130), the reel driving device (130) stops running, and the reel driving device (130) is prevented from being damaged; when the strong wire (120) is loosened, the elbow combiner (150) can automatically return under the action of the elbow combiner lifting spring (170), and the winding state of a reel (110) is recovered.
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Inventors:
LIU NING (CN)
FENG ZAO (CN)
LIU HAO (CN)
FENG ZAO (CN)
LIU HAO (CN)
Application Number:
PCT/CN2022/073748
Publication Date:
June 29, 2023
Filing Date:
January 25, 2022
Export Citation:
Assignee:
TAIZHOU DAWEI ELECTRIC APPLIANCE CO LTD (CN)
International Classes:
H02G1/08; H02K7/102; H02K7/116
Foreign References:
| CN211829973U | 2020-10-30 | |||
| CN217010148U | 2022-07-19 | |||
| CN113148772A | 2021-07-23 | |||
| CN103825227A | 2014-05-28 | |||
| CN209402078U | 2019-09-17 | |||
| US6725973B2 | 2004-04-27 |
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