DOOR HINGE HAVING TWO-SECTION FORCE - QINGYUAN SACA PREC MANUFACTURING CO LTD

Title:

DOOR HINGE HAVING TWO-SECTION FORCE

Document Type and Number:

WIPO Patent Application WO/2021/098592

Kind Code:

A1

Abstract:

A door hinge having a two-section force, comprising a first rotating shaft (3), a second rotating shaft (4), a crank (5), a rocker (6), a housing (10), a hinge cup (1), a U-shaped shaft (2), a double-leg torsion spring (7), a damper (8), and a guide base (9). Protrusions (52) and arc-shaped abutting positions (51) are provided on both front and back sides of a right end of the crank (5), an arc center of each of the arc-shaped abutting position (51) is coaxial with the axis of the first rotating shaft (3); two legs (71) of the double-leg torsion spring (7) respectively abut on the corresponding arc-shaped abutting positions (51) or abut on right ends of the arc-shaped abutting position (51); the damper (8) is mounted in the housing (10); recesses (91) are provided on both front and back sides of the guide base (9); the guide base (9) is located in the housing (10) and can relatively move; the protrusions (52) are located in the corresponding recesses (91); and an end portion of a piston rod (84) of the damper (8) is provided on the guide base (9).

Inventors:

WU QIUHUA (CN)

Application Number:

PCT/CN2020/128558

Publication Date:

May 27, 2021

Filing Date:

November 13, 2020

Export Citation:

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Assignee:

QINGYUAN SACA PREC MANUFACTURING CO LTD (CN)
WU QIUHUA (CN)

International Classes:

E05D3/06; E05D11/00; E05F1/12; E05F5/10

Foreign References:

CN211173603U	2020-08-04
CN207660429U	2018-07-27
CN207813329U	2018-09-04
CN108086836A	2018-05-29
CN205297110U	2016-06-08
CN204804543U	2015-11-25
JP2000008694A	2000-01-11
GB2210662A	1989-06-14

Other References: