JP3016662U

JP3016662U - Seat lifting device for square chair

Info

Publication number: JP3016662U
Application number: JP1995004552U
Authority: JP
Inventors: 義臣堀江
Original assignee: 義臣堀江
Priority date: 1995-04-05
Filing date: 1995-04-05
Publication date: 1995-10-09
Anticipated expiration: 2001-04-05

Abstract

(57)【要約】（修正有）【目的】座面を、低くしたときも、ぐらつかない安定
感のある、角椅子の昇降装置を提供する。【構成】角椅子の座面昇降装置を構成する部品のう
ち、スライダ１の中心部分の幅を広くし、ハンドル軸４
の支持点を、２ヶ所以上にした。 (57) [Summary] (Correction) [Purpose] To provide a lifting device for a square chair that has a stable feeling even when the seat surface is lowered. [Structure] Of the components that make up the sitting surface lifting device of a square chair, the width of the central portion of the slider 1 is widened and the handle shaft 4
The number of supporting points is set to two or more.

Description

[Detailed description of the device]

【０００１】[0001]

[Industrial applications]

この考案は、楽器の演奏などで角椅子を使用する人が、体格とか用途により、座面の床上高さを調節することができる、角椅子の座面昇降装置に関するものである。 The present invention relates to a seat lift device for a square chair that allows a person who uses a square chair to play a musical instrument, etc., to adjust the height of the seat on the floor according to his or her physical constitution and purpose.

【０００２】[0002]

[Prior art]

従来の、座面昇降装置を付けた角椅子は、一部の高価なものを除き、一般に市場に出ている物は、座面を低くした時の安定度が悪く、使用時に、座面が、ぐらつく決点がある。 Except for some expensive ones, conventional square chairs equipped with a seat lifting device are generally on the market and have poor stability when the seat surface is lowered. The surface has a wobble.

【０００３】[0003]

[Problems to be solved by the device]

本考案は、座面昇降装置付の角椅子が、座面を低くした場合に、ぐらつきが大きく、不安定であるため、その欠点を無くすために、なされたものである。 The present invention was made in order to eliminate the drawbacks of a square chair with a seat lifting device, which has large wobble and is unstable when the seat surface is lowered.

【０００４】[0004]

[Means for Solving the Problems]

本考案は、座面昇降装置を付けた角椅子が、ぐらつく欠点の要因が、リンク板（２），（３）；スライダ（１）；ハンドル軸（４）の剛性と、それぞれの連結部分の精度に、起因することに着目し、その対策として、要因の大きい、スライダ（１）の剛性と精度を向上させることを考えたものである。 In the present invention, the causes of the wobbling of the square chair equipped with the seat lifting device are the rigidity of the link plates (2) and (3); the slider (1); the handle shaft (4), respectively. Focusing on the fact that it is due to the accuracy of the connecting part of, the countermeasure is to improve the rigidity and accuracy of the slider (1), which is a major factor.

【０００５】座面（９）に荷重が、かかったとき、リンク機構のリンク（２）とリンク（３）に、互いに反対方向に開く力が働く。リンク（２）の力が、スライダ（１）との連結部（１２）に加わり、そのためにスライダ（１）は、中心のハンドル軸（４）と連結されている、ネジの部分（５）を中心に、回転モーメントが働き、スライダ（１）とリンク（２）の連結部（１２）が軸方向に、遊びの分だけ動かされ、動いた量だけリンク機構が開き、座面（９）が下がる。When a load is applied to the seat surface (9), a force for opening the links (2) and the link (3) of the link mechanism in directions opposite to each other is exerted. The force of the link (2) is applied to the connecting part (12) with the slider (1), so that the slider (1) is connected to the central handle shaft (4), the threaded part (5). A rotational moment acts around the slider, and the connecting part (12) between the slider (1) and the link (2) is moved in the axial direction by the amount of play, and the link mechanism opens by the amount of movement, and the seat surface (9) Goes down.

【０００６】座面（９）に、かかる荷重が、変心荷重の場合は、左右のリンク機構に互いに反対方向の力がかかる。そのためにスライダ（１）に加わる回転モーメントは、更に大きくなるために、リンク（２）との連結部（１２）はより多く動くことになる。When the load applied to the seat surface (9) is an eccentric load, the left and right link mechanisms are applied with forces in opposite directions. Therefore, the rotational moment applied to the slider (1) is further increased, so that the connecting portion (12) with the link (2) is moved more.

【０００７】スライダ（１）の、リンク（２）との連結部（１２）の動き、即ち遊びを、拘束するのは、スライダ（１）の剛性と、ハンドル軸（４）の雄ネジ部分と、そこに支持されているスライダ（１）の雌ネジ部分の精度によるものであるが、ネジ部の精度を、上げるために、雄ネジと雌ネジのクリアランスを小さくし、はめあい長さを大きくすることは、材料費、加工費共高価になる。従って、本考案ではスライダ（１）の、ハンドル軸との連結部を、（５）と（１１）の、２ヶ所にすると共にスライダ（１）の形状を中心で広くして、たわみを小さくするようにしたものである。The movement of the connecting portion (12) of the slider (1) with the link (2), that is, the play is restrained by the rigidity of the slider (1) and the male screw portion of the handle shaft (4). , It depends on the accuracy of the female screw part of the slider (1) supported there, but in order to increase the accuracy of the screw part, the clearance between the male screw and the female screw is made smaller and the fitting length is made larger. Doing so will increase both material costs and processing costs. Therefore, in the present invention, the slider (1) is connected to the handle shaft at two locations (5) and (11), and the shape of the slider (1) is widened at the center to reduce the deflection. It was done like this.

【０００８】[0008]

【Example】

この考案の実施例を添付図面に従って説明すると、スライダ（１）のハンドル軸（４）の支持点を、（５）と（１１）の２ヶ所にし、（５）の位置に雌ネジのブロック又はナツト等を取り付ける。支持点（１１）はハンドル軸（４）のストレートの部分が、はまるように軸径に合わせた穴を、設けたものである。 An embodiment of the present invention will be described with reference to the accompanying drawings. The supporting point of the handle shaft (4) of the slider (1) is set to two places (5) and (11), and a female screw is placed at the position (5). Attach blocks or nuts. The support point (11) is provided with a hole adapted to the shaft diameter so that the straight part of the handle shaft (4) can be fitted.

【０００９】スライダ（１）の支持点（５）と（１１）との間隔は、座面（９）を上げ、下げするための、スライダ（１）がフレーム（６）の内側で最大動かすことが出来る範囲で、長くして、スライダ（１）の剛性を出来るだけ、大きくしたものである。The distance between the support points (5) and (11) of the slider (1) is such that the slider (1) moves maximum inside the frame (6) to raise and lower the seat surface (9). The slider (1) is made as long as possible to make the rigidity of the slider (1) as large as possible.

【００１０】スライダ（１）を介して、ハンドル軸（４）にかかるスラスト荷重にはハンドル軸（４）にカラー（７）を両軸端から、はめこみフレーム（６）に密着させてハンドル軸（４）に取り付け、スラスト荷重を受けると共に軸方向の動きを拘束した。For the thrust load applied to the handle shaft (4) via the slider (1), the collar (7) is closely attached to the handle shaft (4) from both shaft ends to the fitting frame (6). It was attached to 4) and was subjected to thrust load and restrained axial movement.

【００１１】[0011]

[Effect of device]

この考案は、前記した構成を有し、角椅子の座面が低い位置での安定度が良く、ぐらつきが殆ど感じないので、体格の大きい人が使用した時でも安心感のある、昇降装置付の角椅子を、安価で提供できる。 This invention has the above-mentioned structure, and the stability of the seat in the low position of the square chair is good, and there is almost no wobble. Corner chairs can be provided at low cost.

[Brief description of drawings]

【図１】本考案の実施例の縦断面図；下面図FIG. 1 is a vertical sectional view of an embodiment of the present invention; a bottom view.

【図２】本考案の実施例の分解斜視図FIG. 2 is an exploded perspective view of an embodiment of the present invention.

【図３】従来例の分解斜視図FIG. 3 is an exploded perspective view of a conventional example

[Explanation of symbols]

１；スライダ８；下部フ
レーム２；リンク９；座面３；リンク１０；脚枠４；ハンドル軸１１；ハンド
ル軸用穴５；雌ネジ、ブロック１２；リベッ
ト［リンク連結用］６；フレーム１３；従来の
スライダ７；カラー１４；座金1; slider 8; lower frame 2; link 9; seat surface 3; link 10; leg frame 4; handle shaft 11; handle shaft hole 5; female screw, block 12; rivet [for link connection] 6; frame 13; Conventional slider 7; Color 14; Washer

Claims

[Scope of utility model registration request]

1. A slider (1) for moving link plates (2), (3) for moving a seating surface of a square chair up and down has a male screw portion of a handle shaft (4) and a straight portion of the handle shaft (4). A seat lifting device that is supported in more than one place.

2. The slider (1) is supported at two or more locations of the male screw portion of the handle shaft (4) [claim 1]
Seat lifting device described.