Joining structure of two door members forming door for entrance opening and closing of aircraft lavatory unit

Patent metadata

Field	Value
Publication number	US-11047158-B2
Application number	US-201917047378-A
Country	US
Kind code	B2
Filing date	Apr 11, 2019
Priority date	Apr 13, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A joining structure for two door members forming a door member for entrance opening and closing of an aircraft lavatory unit is configured so that a pair of brackets provided on the pair of door members are joined swingably by a bracket joining shaft; and one ends of a pair of covers are joined to the pair of brackets by bracket cover joining shafts, and the other ends of the pair of covers are joined swingably by a cover joining shaft, at a section farther away from the lavatory than the bracket joining shaft.

First claim

The invention claimed is:

1. A joining structure of two door members forming a door for entrance opening and closing of an aircraft lavatory unit, comprising:
a door member for entrance opening and closing for opening and closing an entrance of a lavatory of an aircraft lavatory unit;
the door member for entrance opening and closing comprising a first door member and a second door member that are foldably joined to each other, the two door members being configured to close the entrance in an extended state and being configured to open the entrance in a folded state in a convex shape toward a side of the lavatory,
the joining structure comprising:
a pair of brackets respectively protruding from opposite end portions of the first door member and the second door member;
a bracket joining shaft that joins tip portions of the pair of brackets swingably; and
a pair of covers, one end of each being joined to a section of the pair of brackets around the bracket joining shaft swingably by a bracket cover joining shaft, an other end of each being joined swingably by a cover joining shaft, at a section farther away from the lavatory than the bracket joining shaft;
the pair of covers, with the first door member and the second door member being in an extended state, covering sections of the pair of brackets around the bracket joining shaft over the entire length in a vertical direction from an outside of the lavatory.

2. The joining structure of two door members forming a door for entrance opening and closing of an aircraft lavatory unit according to claim 1 , wherein
the pair of brackets comprises;
mounting plate portions attached to opposite end portions of the first door member and the second door member in an extended state;
upright portions standing upright from the mounting plate portions; and
bent portions extending from tip portions of the upright portions in directions away from the lavatory;
shaft receiving portions that support the bracket joining shaft are provided at tip portions of the bent portions; and
shaft receiving portions that support the bracket cover joining shaft are provided at sections of the tip portions the bent portions that face the mounting plate portions, at sections nearer to the mounting plate portions than the shaft receiving portions.

3. The joining structure of two door members forming a door for entrance opening and closing of an aircraft lavatory unit according to claim 2 , further comprising:
a plurality of shaft receiving portions that support the bracket joining shaft of the pair of brackets are provided at intervals in a vertical direction of the mounting plate portion;
the plurality of shaft receiving portions of the pair of brackets are arranged alternately in the vertical direction; and
a torsion spring for applying a bias force to the first door member and the second door member in an extended state; wherein
the torsion spring comprises a coil portion and a pair of rod-like portions protruding from both ends of the coil portion; and
in the torsion spring, the coil portion is disposed between shaft receiving portions of the pair of brackets, the bracket joining shaft is inserted through an inside of the coil portion, and one of the pair of rod-like portions is abutted against one bracket of the pair of brackets, and an other of the pair of rod-like portions is abutted against an other bracket of the pair of brackets.

4. The joining structure of two door members forming a door for entrance opening and closing of an aircraft lavatory unit according to claim 2 , wherein
the pair of covers comprises:
a main body plate portion, an outer circumferential surface of which is arc shaped and extends in the vertical direction;
a shaft receiving portion that is provided at one end in an arc direction of an inner circumferential surface of the main body plate portion and supports the cover joining shaft; and
a shaft receiving portion that is provided on an other end in the arc direction of the inner circumferential surface of the main body plate portion and supports the bracket cover joining shaft;
a plurality of the shaft receiving portions that support the cover joining shaft are provided at intervals in an extending direction of the main body plate portion;
a length in the arc direction of a section of the main body plate portion where the shaft receiving portion that supports the cover joining shaft is provided is larger, compared to a section of the main body plate portion where the shaft receiving portion is not provided;
a shaft receiving portion, supporting the cover joining shaft, of one cover of the pair of covers and a shaft receiving portion, supporting the cover joining shaft, of an other cover of the pair of covers are alternately arranged in the vertical direction;
an end portion in the arc direction of the main body plate portion provided with a shaft receiving portion, supporting the cover joining shaft, of one cover of the pair of covers comes in contact with an end portion in the arc direction of the main body plate portion where the shaft receiving portion, supporting the cover joining shaft, of an other cover of the pair of covers is not provided;
an end portion in the arc direction of the main body plate portion provided with a shaft receiving portion, supporting the cover joining shaft, of an other cover of the pair of covers comes in contact with an end portion in the arc direction of the main body plate portion where the shaft receiving portion, supporting the cover joining shaft, of one cover of the pair of covers is not provided;
facing each other in the vertical direction, an end surface of a shaft receiving portion, supporting the cover joining shaft, of one cover of the pair of covers comes in contact with an end surface of a shaft receiving portion, supporting the cover joining shaft, of an other cover of the pair of covers; and
with the first door member and the second door member being in an extended state, the outer circumferential surfaces of the main body plate portions of the pair of covers are cylindrical surfaces continuous in the vertical direction.

5. The joining structure of two door members forming a door for entrance opening and closing of an aircraft lavatory unit according to claim 1 , wherein
the pair of covers, with the first door member and the second door member being in a folded state, is housed in a space between the mounting plate portions, the upright portions, and the bent portions of the pair of brackets.

6. The joining structure of two door members forming a door for entrance opening and closing of an aircraft lavatory unit according to claim 5 , further comprising:
a plurality of shaft receiving portions that support the bracket joining shaft of the pair of brackets are provided at intervals in a vertical direction of the mounting plate portion;
the plurality of shaft receiving portions of the pair of brackets are arranged alternately in the vertical direction; and
a torsion spring for applying a bias force to the first door member and the second door member in an extended state; wherein
the torsion spring comprises a coil portion and a pair of rod-like portions protruding from both ends of the coil portion; and
in the torsion spring, the coil portion is disposed between shaft receiving portions of the pair of brackets, the bracket joining shaft is inserted through an inside of the coil portion, and one of the pair of rod-like portions is abutted against one bracket of the pair of brackets, and an other of the pair of rod-like portions is abutted against an other bracket of the pair of brackets.

7. The joining structure of two door members forming a door for entrance opening and closing of an aircraft lavatory unit according to claim 6 , wherein
the pair of c

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Watanabe Kazumasa

Classifications

• E05Y2800/41

  against finger injury · CPC title

• E05Y2800/12

  Sealing · CPC title

• E05D15/26

  for folding wings · CPC title

• E05D11/0054 Primary

  Covers, e.g. for protection · CPC title

• E05Y2900/502

  for aircraft or spacecraft · CPC title