Angle-adjustable fitting

Abstract

A first member (1) holding a disc body (16) having a non-circular through hole (23) as to freely rotate around an oscillation axis (C), a non-circular shaft portion (20) to be inserted to the through hole (23), and a second member (2) fixed to an end of the non-circular shaft portion (20), are provided; the first member (1) and the second member (2) are pivoted as to relatively oscillate by insertion of the shaft portion (20) to the through hole (23), a gear portion (4) is formed on a peripheral edge portion of the disc body (16) ; a floating wedge member (6), of which one side is a toothed face (7) engaged to the gear portion (4) and another face is a contact face (9) to contact a wedge face (8) formed on the first member (1) side, is provided; and a recovery means (10), which recovers the floating wedge member (6) from a retreat state to an engaged state with the gear portion (4) by a return action (M 2 ) of a predetermined small angle (¸) in a direction (A) on way of free oscillation (M 1 ) in which the first member (1) and the second member (2) are relatively oscillated in a direction (B) from a lock-releasing position (P 0 ), is provided.

Description

Technical field [0001] The invention relates to an angle adjustment fitting. Background technique [0002] In such Figure 13 with Figure 14 On the sofa S shown, the angle adjustment hardware Z is used to make reclining headrest 48 and armrest 49 and other pillows 50 possible. The structure of the sofa S is such that the pivoting of the pillow 50 in the direction B is restricted by the angle adjustment fitting Z so that it maintains the posture at a desired inclination angle, and the pillow 50 swings in the other direction A while rattling. [0003] The inventors of the present invention have proposed numerous angle adjustment fittings for maintaining the inclination angle of the pillow 50 in multiple stages. (For example, refer to Patent Document 1). [0004] [Patent Document 1] Japanese Patent No. 4418519 Summary of the invention [0005] The angle adjustment fitting described in Patent Document 1 pivotally connects the first member and the second member in a relatively swingable...

AI Technical Summary

Problems solved by technology

That is, there is a disadvantage that the first member and the second member cannot maintain the posture in the locked state because they are at an intermediate position during the swing from the lock release position to the lock recovery position.

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