Abrégé

[Problem] The present invention provides an angle adjuster having a second member that oscillates with respect to a first member and is locked at a predetermined angle. [Solution] In this angle adjuster, one end side of the first member comprises a pair of opposed plate portions that are provided opposed to each other with a gap in the thickness direction and each have a circular support opening extending in the thickness direction, the angle adjuster further comprising: a gear that is sandwiched in the gap between the pair of opposed plate portions, said gear being a flat disc body having a through-hole provided with a threaded groove that extends in the thickness direction on the inner wall provided at the center of rotation, and having a toothed surface on the outer peripheral edge portion; and a cylindrical shaft member that rotates in cooperation with the oscillation of the second member, said shaft member extending in the thickness direction and having, on an outer surface thereof, a thread to be fitted with the threaded groove on the inner wall of the through-hole of the gear when inserted into the through-hole, said shaft member having a shape such that when the thread is inserted into the circular support openings of the pair of opposed plate portions, the thread contacts the inner wall of said openings so that both sides of the cylindrical shaft member are supported by the circular support openings to be able to slide and rotate.

Classes IPC  ?

• A47C 7/54 - Appuis pour les bras
• A47C 1/026 - Chaises ou fauteuils de relaxation ou liseuses ayant des éléments de soutien à réglage indépendant les éléments, étant le dossier ou l'ensemble siège-dossier, ayant une inclinaison réglable au moyen d'un mécanisme à cheville et encoche ou à cliquet et roue à rochet
• A47C 7/38 - Appuis pour la tête ou le dos pour la tête, p. ex. amovibles
• F16C 11/10 - Dispositions pour le verrouillage

Abrégé

[Problem] The present invention provides a rotary torque variable-type angle adjuster for a legless chair, the angle adjuster having a first arm and a second arm which are attached on a seat part side and a back part side, respectively, of the legless chair and which swing and rotate around a mutual pivot point. [Solution] This rotary torque variable-type angle adjuster for legless chair has an initial motion mechanism in which one of the first arm and the second arm of the angle adjuster is equipped with a protruding part while the other of the first arm and the second arm has a recessed part or a hole. The protruding part and the recessed part or the hole of the initial motion mechanism are aligned by the position of the protruding part overlapping with the position of the recessed part or the hole when the first arm and the second arm reach a mutual opening limit position and by the protruding part being received in the recessed part or the hole. When the first arm and the second arm swing in a closing direction from the mutual opening limit position, the first arm and the second arm are elastically deformed in the thickness direction by the rotational torque caused by the swinging, and thus the protruding part is removed from the recessed part or the hole.

Classes IPC  ?

• A47C 1/026 - Chaises ou fauteuils de relaxation ou liseuses ayant des éléments de soutien à réglage indépendant les éléments, étant le dossier ou l'ensemble siège-dossier, ayant une inclinaison réglable au moyen d'un mécanisme à cheville et encoche ou à cliquet et roue à rochet
• F16C 11/04 - Articulations
• F16C 11/10 - Dispositions pour le verrouillage

Abrégé

[Problem] To provide a compact angle adjustment tool which allows a desired angle change, is easy to use, and is less likely to rattle. [Solution] This angle adjustment tool reciprocally moves a lock body along one axial center to restrict and release axial rotation of a first member and second member. When the lock body is moved forward, axial rotation of the first member and the second member is restricted by engaging an axial uneven article provided on a frustoconical part of the lock body and an uneven part which is provided on a hole part of a first member capable of receiving the frustoconical part and can be engaged with the uneven article of the frustoconical part. When the lock member is moved backward, the restriction of axial rotation of the first member and the second member can be released by separating the uneven article of the frustoconical part and the uneven part provided on the hole part of the first member.

Classes IPC  ?

• A61G 7/05 - Parties constitutives, détails ou accessoires de lits
• A47C 1/025 - Chaises ou fauteuils de relaxation ou liseuses ayant des éléments de soutien à réglage indépendant les éléments, étant le dossier ou l'ensemble siège-dossier, ayant une inclinaison réglable au moyen d'un mécanisme à pignon-crémaillère ou d'un mécanisme d'engrenage similaire
• A61G 5/10 - Parties constitutives, détails ou accessoires
• F16C 11/04 - Articulations

Abrégé

It is provided a steel with composite plating film providing rust prevention over a long time period and a method of manufacturing thereof. A composite plating film 24 is formed on a metal material 21. The film 24 has a plating film 23 made of a sacrificial anode metal and photocatalyst particles 22 dispersed and fixed in the plating film 23. The photocatalyst particle has a main body composed of a photocatalyst and a semiconductor material supported thereon. The composite plating film 24 is formed on the surface of the metal material 21 by electroplating, hot-dipping, chemical plating or the like.

Classes IPC  ?

• B32B 15/04 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique
• B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique