JPH01179546U

JPH01179546U -

Info

Publication number: JPH01179546U
Application number: JP7739488U
Authority: JP
Priority date: 1988-06-10
Filing date: 1988-06-10
Publication date: 1989-12-22

Description

[Brief explanation of the drawing]

図面の本考案の実施例を示し、第１図は第１実
施例の椅子の側面図、第２図は平面図、第３図は
第２図の―視断面図、第４図は第２図の―
視断面図、第５図は第２実施例の平面図、第６
図は第５図の―視断面図、第７図は第５図の
―視断面図、第８図は第３実施例の要部平面
図、第９図は第８図の―視断面図である。１……椅子、３……脚柱、４……支持枠、５…
…座板、６……座板支持体、７……背もたれ、８
……背もたれ支持体、１３，１３ａ……スライド
軸、１９……可動体、２１……操作レバー、２１
ａ……回動軸、２１ｂ……操作部、２３……係合
部材、２３ａ……係合部の一例としての突起、２
３ｂ……係合部の一例としての係合溝、２４……
係止片、３４ａ……接当部。 The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the chair of the first embodiment, FIG. 2 is a plan view, FIG. 3 is a sectional view of FIG. 2, and FIG. Figure -
A cross-sectional view, FIG. 5 is a plan view of the second embodiment, and FIG.
The figure is a sectional view of FIG. 5, FIG. 7 is a sectional view of FIG. 5, FIG. 8 is a plan view of the main part of the third embodiment, and FIG. 9 is a sectional view of FIG. 8. It is. 1... Chair, 3... Pillar, 4... Support frame, 5...
... Seat plate, 6... Seat plate support, 7... Backrest, 8
... Backrest support, 13, 13a ... Slide shaft, 19 ... Movable body, 21 ... Operation lever, 21
a...Rotation shaft, 21b...Operation unit, 23...Engaging member, 23a...Protrusion as an example of the engaging part, 2
3b...Engagement groove as an example of an engagement portion, 24...
Locking piece, 34a... contact portion.

Claims

[Scope of utility model registration request]

A seat plate support for supporting the seat plate is pivotally attached to a support frame attached to the upper end of the pedestal so that the seat plate can be tilted backwards, and the support frame or the seat plate support has a lock release that allows the seat plate to be tilted backwards. In a seat tilting device for a chair, an operating lever for switching between a state and a locked state in which backward tilting is not possible is rotatably supported around an axis extending substantially horizontally, the pivoting axis of the operating lever including: An engaging member having an engaging portion such as a protrusion formed on the outer periphery is fitted, and the engaging member is attached to the support frame or seat plate support body to which the operating lever is attached, and the engaging member is fitted with the engaging member having an engaging portion such as a protrusion formed on the outer periphery. 1. A locking device for a seat tilting device for a chair, characterized in that a locking piece made of an elastic plate is provided to selectively engage with an engaging portion of a mating member.