Lock knob attachment, lavatory door, and method for mounting lock knob attachment

A method for attaching a lock knob attachment to a lavatory door,

• wherein the door comprises:
• a door panel configured to be attached to a first wall of a lavatory rotatably around a door hinge axis and configured to include a long hole portion;
• and
• a lock bar comprising a base portion arranged inside the door panel, and an engagement portion configured to be engaged with a second wall of the lavatory, the lock bar being configured to change positions from an unlocked position retracted from the second wall to a locked position engaged with the second wall by sliding in a first direction,
• wherein the lock knob attachment comprises:
• an attachment portion configured to be attached to the lock bar and configured to be moved along the long hole portion in a sliding motion;
• and
• a main body portion coupled to the attachment portion and configured to extend from the attachment portion to a second direction perpendicular to the first direction,
• wherein, in a state where a direction perpendicular to both the first direction and the second direction is defined as a third direction, a length of the main body portion in a direction along the third direction is greater than a length of the attachment portion in a direction along the third direction,
• wherein the method for attaching the lock knob attachment comprises:
• a step of inserting the attachment portion to the long hole portion by moving the attachment portion in a direction toward the lock bar;
• and
• a step of fixing the attachment portion to the lock bar via a fastening member, and
• wherein the step of inserting comprises:
• arranging at least a part of the attachment portion to a position hidden by the door panel when viewed in an opposite direction to the second direction.

A lavatory door comprising:

• a door panel configured to be attached to a first wall of a lavatory rotatably around a door hinge axis;
• a handle portion arranged on the door panel;
• a lock bar that is configured to lock the lavatory door by sliding in a first direction;
• and
• a lock knob attachment including:
• an attachment portion configured to be attached to the lock bar;
• and
• a main body portion coupled to the attachment portion and configured to extend from the attachment portion to a second direction perpendicular to the first direction,
• wherein:
• in a state where a direction perpendicular to both the first direction and the second direction is defined as a third direction, a length of the main body portion in a direction along the third direction is greater than a length of the attachment portion in the direction along the third direction,
• the door panel comprises a long hole portion in which the attachment portion is configured to be moved in a sliding motion,
• the attachment portion comprises a weakened portion configured to define a rupture position of the attachment portion, and
• the weakened portion is arranged on the second direction side than the long hole portion.