JPH0548748U - Leg device in chair - Google Patents
Leg device in chairInfo
- Publication number
- JPH0548748U JPH0548748U JP102573U JP10257391U JPH0548748U JP H0548748 U JPH0548748 U JP H0548748U JP 102573 U JP102573 U JP 102573U JP 10257391 U JP10257391 U JP 10257391U JP H0548748 U JPH0548748 U JP H0548748U
- Authority
- JP
- Japan
- Prior art keywords
- column
- receiving portion
- chair
- leg
- end portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 13
- 239000000057 synthetic resin Substances 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910052580 B4C Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
(57)【要約】
【目的】椅子における合成樹脂製の脚体４の支柱受け部
７に嵌合する支柱５が必要以上に沈下しないようにす
る。
【構成】座体を支持するための支柱５の下端部５ａを、
下に行くに従って直径が細くなるように截頭錐台形状に
形成する。一方、合成樹脂製の脚体４に、前記支柱の下
端部５ａを嵌合するための支柱受け部７を設け、該支柱
受け部７の孔面７ａを下窄まり状のテーパー状に形成
し、前記支柱の下端部５ａ外周面に、ローレット加工し
た粗面部１０を設ける。これにより、支柱５に下向き荷
重が作用したとき、支柱受け部７と下端部５ａとの嵌合
状態で粗面部の摩擦抵抗力が大きいので、支柱５が必要
以上に沈下しない。
(57) [Summary] [Purpose] To prevent the column 5 that is fitted to the column receiving portion 7 of the synthetic resin leg 4 in the chair from sinking more than necessary. [Structure] A lower end portion 5a of a column 5 for supporting a seat is
It is formed in a truncated cone shape so that the diameter becomes smaller as it goes downward. On the other hand, a leg receiving member 7 for fitting the lower end portion 5a of the post is provided on the synthetic resin leg 4, and the hole surface 7a of the post receiving portion 7 is formed in a downward tapered shape. A knurled rough surface portion 10 is provided on the outer peripheral surface of the lower end portion 5a of the column. Thus, when a downward load is applied to the column 5, the friction resistance of the rough surface portion is large in the fitted state of the column receiving portion 7 and the lower end 5a, so that the column 5 does not sink more than necessary.
Description
【０００１】[0001]
本考案は、合成樹脂製の脚体に対して、椅子における座体を支持するための支 柱を、ずれ落ちないように嵌合する構造に関するものである。 The present invention relates to a structure in which a support pillar for supporting a seat body of a chair is fitted to a leg made of synthetic resin so as not to slip off.
【０００２】[0002]
この種の脚装置の先行技術として、椅子における座体を支持するための円柱状 の支柱の下端部を下に行くに従って直径の細い截頭円錐台形状に形成し、この截 頭円錐台形状の下端部を、キャスター付きの金属製の脚体における中央のテーパ ー状の嵌合受け部に嵌合させることを提案している。 As a prior art of this type of leg device, the lower end of a cylindrical column for supporting a seat in a chair is formed into a truncated cone shape with a diameter that becomes smaller as it goes downward, and this truncated cone shape It has been proposed to fit the lower end part to the tapered fitting receiving part in the center of the metal leg with casters.
【０００３】[0003]
ところで、この脚体が特開昭６０−６０８１３号公報に開示するように、合成 樹脂材にて一体的に形成した場合、前記テーパー状の嵌合受け部の肉厚を余り厚 くすることができない。そうすると、座体に座る人の下向き荷重が繰り返して支 柱を介して前記テーパー状の嵌合受け部に作用したとき、当該嵌合受け部の直径 が増大して、支柱が初期の位置よりも大きく沈下してしまうという問題があった 。 By the way, when this leg is integrally formed of a synthetic resin material as disclosed in Japanese Patent Laid-Open No. 60-60813, the thickness of the tapered fitting receiving portion may be excessively increased. Can not. Then, when the downward load of the person sitting on the seat repeatedly acts on the tapered fitting receiving portion via the support column, the diameter of the fitting receiving portion increases, and the support column is positioned more than the initial position. There was a problem that it would sink significantly.
【０００４】 本考案は、この問題を解決することを目的とするものである。The present invention aims to solve this problem.
【０００５】[0005]
前記目的を達成するため、本考案の一つは、椅子における座体を支持するため の支柱の下端部を、下に行くに従って直径が細くなるように截頭錐台形状に形成 する一方、合成樹脂製の脚体に、前記支柱の下端部を嵌合するための支柱受け部 を設け、該支柱受け部の孔面を下窄まり状のテーパー状に形成したものにおいて 、前記支柱の下端部外周面もしくは支柱受け部の孔面のいずれか一方または双方 には、粗面部を設けたものである。 In order to achieve the above-mentioned object, one of the present invention is to form a lower end of a column for supporting a seat in a chair into a truncated truncated cone shape so that the diameter becomes smaller as it goes downward. A resin leg body is provided with a strut receiving portion for fitting the lower end portion of the strut, and a hole surface of the strut receiving portion is formed in a downward tapered shape. A rough surface portion is provided on either or both of the outer peripheral surface and the hole surface of the column receiving portion.
【０００６】 他の考案は、前記支柱受け部の孔面の上端には、直径の大きい段部を形成し、 該段部には、前記支柱下端部の截頭錐台形状部分の上部寄り部位に被嵌係止する 金属製のテーパー環状体を載置する構成であり、さらに他の考案は、前記支柱受 け部の孔面の上端には、直径の大きい段部を形成し、前記支柱における截頭錐台 形状部位の上部寄り部位の外周面には、前記段部に当接する係合突起を設けたも のである。In another invention, a step portion having a large diameter is formed at an upper end of a hole surface of the strut receiving portion, and the step portion has a portion closer to an upper part of the truncated truncated cone-shaped portion of the lower end portion of the strut. In another configuration, a stepped portion having a large diameter is formed at the upper end of the hole surface of the strut receiving portion. On the outer peripheral surface of the portion closer to the upper part of the truncated truncated cone-shaped portion in, there is provided an engagement protrusion that abuts against the stepped portion.
【０００７】[0007]
この構成により、請求項１の考案によれば、座体を支持する支柱における截頭 円錐台形状の下端部を、合成樹脂製の脚体におけるテーパー状の支柱受け部に嵌 合させた状態で、座体に下向きの荷重が作用するとき、前記下端部または支柱受 け部の孔面のいずれか一方又は双方に施されれた粗面部の摩擦抵抗力により支柱 が必要以上に沈下することを防止できる。この効果は支柱受け部孔面の上端に形 成した段部に対する支柱下端外周に着脱自在に被嵌するテーパー環状体や前記下 端部外面に突設した係合突起によっても同様に奏することができる。 With this configuration, according to the first aspect of the invention, the lower end of the truncated-cone-conical shape of the supporting column for supporting the seat body is fitted to the tapered supporting column receiving portion of the synthetic resin leg body. When a downward load is applied to the seat, it is necessary to prevent the column from sinking more than necessary due to the frictional resistance of the rough surface provided on either or both of the lower end and the hole surface of the column receiving part. It can be prevented. This effect can be similarly obtained by a tapered annular body which is detachably fitted to the outer periphery of the lower end of the column with respect to the step formed at the upper end of the hole surface of the column receiving portion, and an engaging projection protruding on the outer surface of the lower end portion. it can.
【０００８】 さらに、前記粗面部、テーパー環状体、及び前記下端部外面に突設した係合突 起は、支柱受け部に対して固着するものでないから、支柱や脚体の交換作業時に 、支柱と脚体との離脱が容易にできるという効果も奏する。Further, since the rough surface portion, the tapered annular body, and the engagement protrusions protruding from the outer surface of the lower end portion are not fixed to the support pillar receiving portion, the support pillar or the leg body can be replaced during the replacement work. It also has the effect of being easily detached from the legs.
【０００９】[0009]
次に本考案を具体化した実施例について説明すると、図１の椅子１における座 体２はガスシリンダ３を介して、合成樹脂製の脚体４に支持されている。ガスシ リンダ３は、その下部の支柱５に対して上下昇降動する昇降軸６が図示しない操 作レバーにより適度高さ位置で保持できるように構成されており、この昇降軸６ の上端が座体２の下面に取付く。 An embodiment embodying the present invention will now be described. The seat 2 of the chair 1 of FIG. 1 is supported by a synthetic resin leg 4 via a gas cylinder 3. The gas cylinder 3 is constructed such that an elevating shaft 6 that moves up and down with respect to a column 5 below it can be held at an appropriate height position by an operating lever (not shown), and the upper end of the elevating shaft 6 is a seat body. Attach it to the bottom surface of 2.
【００１０】 脚体４は、図１及び図２に示すように、合成樹脂にて一体的に成形したもので あり、脚体４の中心部には、図２に示すように鉛直線に対してθの角度となる下 窄まり状のテーパー状の断面角型又は丸型の支柱受け部７を有し、該支柱受け部 ７の外周に３つ以上（実施例では５つ）の脚アーム８を平面視で放射状に延ばし 、各脚アーム８の先端にキャスタ９を取り付ける。As shown in FIGS. 1 and 2, the leg body 4 is integrally molded of synthetic resin. The leg body 4 has a central portion with respect to a vertical line as shown in FIG. Has a downward constricted tapered cross-section or a round-shaped strut receiving portion 7 having an angle of θ, and three or more (five in the embodiment) leg arms are provided on the outer circumference of the strut receiving portion 7. 8 is extended radially in a plan view, and casters 9 are attached to the tips of the leg arms 8.
【００１１】 そして、前記支柱受け部７にガスシリンダ３における支柱５の下端部５ａを嵌 挿するものであり、そのため下端部５ａは前記θと同じテーパー角度を有するよ うに下に行くに従って直径が細くなるように截頭円錐台形状または截頭角錐台形 状に形成する。 図３に示す第１実施例では、支柱における下端部５ａの外周面に、ローレット 加工を施して、ローレット目の粗面部１０を設ける。なお、この実施例では、ロ ーレット目の粗面部１０を截頭円錐台形状下端部５ａの外周面全体に施してある が、適宜上下長さＨの部分に施しても良い。また、支柱受け部７の孔面７ａにの みに粗面部０を設けても良いし、前記下端部５ａ及び支柱受け部７の孔面７ａの 両方に粗面部１０を施しても良い。粗面部１０は、荒い目のグラインダによる削 り面であっても等良いが、図３に示すように支柱受け部７の場合は、テーパー面 に対して上向き逆勾配の突起部が突出するようにして、支柱の下端部５ａが下降 し難いように形成するのが好ましい。Then, the lower end portion 5a of the pillar 5 of the gas cylinder 3 is inserted into the pillar receiving portion 7, so that the lower end portion 5a has the same taper angle as the above θ, and the diameter decreases as it goes downward. It is formed in a truncated cone shape or a truncated truncated pyramid shape so that it becomes thinner. In the first embodiment shown in FIG. 3, the outer peripheral surface of the lower end portion 5a of the column is knurled to provide the rough surface portion 10 of the knurl. In this embodiment, the rough surface portion 10 of the knurling is applied to the entire outer peripheral surface of the truncated cone-shaped lower end portion 5a, but it may be applied to the portion having the vertical length H as appropriate. Further, the rough surface portion 0 may be provided only on the hole surface 7a of the strut receiving portion 7, or the rough surface portion 10 may be provided on both the lower end portion 5a and the hole surface 7a of the strut receiving portion 7. The rough surface portion 10 may be a rough surface grinded by a grinder, but in the case of the column support portion 7 as shown in FIG. Therefore, it is preferable that the lower end portion 5a of the column is formed so as not to easily descend.
【００１２】 粗面部１０の形成の他の実施例として、研摩材、例えば金剛砂、アルミナ、炭 化ケイ素、炭化ホウ素、エメリー、ケイ石等を塗料に混合して、その塗料を前記 前記支柱下端部５ａ及び支柱受け部７の孔面７ａのいずれか一方または両方に塗 布して粗面部１０を形成しても良い。この場合、前記粗面部１０を形成するため の塗装面を充分に乾燥させた後に支柱下端部５ａを支柱受け部７に嵌挿する。As another embodiment of forming the rough surface portion 10, an abrasive, for example, hard sand, alumina, silicon carbide, boron carbide, emery, silica stone, etc., is mixed with the paint, and the paint is applied to the lower end portion of the column. The rough surface portion 10 may be formed by coating one or both of the hole 5 a and the hole surface 7 a of the column receiving portion 7. In this case, after the coated surface for forming the rough surface portion 10 is sufficiently dried, the lower end portion 5a of the column is fitted into the column receiving portion 7.
【００１３】 前記粗面部１０を支柱５における下端部５ａ及び支柱受け部７の孔面７ａのい ずれか一方または両方に設けることにより、座体２からの下向き荷重（体重）が 支柱５に掛かった場合、下端部５ａと支柱受け部７のテーパー面での嵌合部（接 触部）で支柱の下向き移動方向への抵抗力で大きくなって、支柱５の沈下を抑制 することができる。また、ガスシリンダ３の交換作業等に際して、支柱５を支柱 受け部７から引き抜くとき、両者の嵌合部で接着していないから、支柱５を容易 に離脱させることができる。By providing the rough surface portion 10 on one or both of the lower end portion 5 a of the column 5 and the hole surface 7 a of the column receiving portion 7, a downward load (weight) from the seat body 2 is applied to the column 5. In this case, the lower end portion 5a and the fitting portion (contact portion) on the tapered surface of the strut receiving portion 7 are increased by the resistance force in the downward movement direction of the strut, so that the depression of the strut 5 can be suppressed. Further, when the support column 5 is pulled out from the support column receiving portion 7 when the gas cylinder 3 is replaced, the support column 5 can be easily removed because the fitting portions of the two support columns are not bonded.
【００１４】 図５及び図６は第２実施例を示し、合成樹脂製の脚体４に、前記支柱５の截頭 錐台形状の下端部５ａを嵌合するための支柱受け部７を設け、この支柱受け部７ の孔面７ａを下窄まり状のテーパー状に形成する。支柱受け部７の孔面７ａの上 端には、直径の大きい段部１１を形成し、該段部１１には、前記支柱５下端部５ ａの截頭錐台形状部分の上部寄り部位に被嵌係止する金属製のテーパー環状体１ ２を載置する。このテーパー環状体１２は、図５に示すように、内径面を前記下 端部５ａ外面のテーパー角度θと同じテーパー角度を有し、且つその内径は前記 支柱５下端部５ａの截頭錐台形状部分の上部寄り部位に被嵌したときそれ以上上 に移動（上向きにずれ移動）しないように設定する。また、テーパー環状体１２ の外周部は前記段部１１に載置できる形状にする。これにより、予め前記テーパ ー環状体１２を下端部５ａの上部寄り部位に被嵌しておき、この状態で、図６に 示すように支柱の下端部５ａを支柱受け部７に嵌合する。このようにすれば、支 柱５に体重等の下向き荷重が作用したとき、段部１１に支持されたテーパー環状 体１２を介して下端部５ａを締まり勝手に支持でき、テーパー環状体１２が金属 製であるから、従来のように支柱５からの下向き荷重により合成樹脂製の支柱受 け部７が拡がり変形して支柱５が沈下するような事態を防止でき、しかも、支柱 受け部７においても支柱５下端部５ａの截頭錐台形状部分を支持するので、支柱 ５が鉛直に対して傾く等の事態も防止できる。さらに、支柱５を支柱受け部７か ら外す場合も、下端部５ａと支柱受け部７とのテーパー面での食い込みが少ない から容易に離脱させることができる。FIG. 5 and FIG. 6 show a second embodiment, in which a synthetic resin leg 4 is provided with a strut receiving portion 7 for fitting the truncated truncated cone-shaped lower end portion 5a of the strut 5. The hole surface 7a of the strut receiving portion 7 is formed in a downward tapered shape. A stepped portion 11 having a large diameter is formed at the upper end of the hole surface 7a of the strut receiving portion 7, and the stepped portion 11 is provided at a portion of the lower end portion 5a of the strut 5 near the upper part of the truncated truncated cone shape portion. A tapered metal annular body 12 to be fitted and locked is placed. As shown in FIG. 5, the tapered annular body 12 has an inner diameter surface having the same taper angle as the taper angle θ of the outer surface of the lower end portion 5a, and the inner diameter thereof is a truncated truncated cone of the lower end portion 5a of the column 5. Set it so that it will not move upward (shift upward) when it is fitted on the upper part of the shape part. Further, the outer peripheral portion of the tapered annular body 12 is shaped so that it can be placed on the stepped portion 11. As a result, the tapered annular body 12 is previously fitted to the upper end portion of the lower end portion 5a, and in this state, the lower end portion 5a of the support pillar is fitted to the support pillar receiving portion 7 as shown in FIG. With this configuration, when a downward load such as a weight is applied to the support column 5, the lower end portion 5a can be tightened and freely supported through the tapered annular body 12 supported by the stepped portion 11, and the tapered annular body 12 is made of metal. Since it is made of plastic, it is possible to prevent the situation in which the strut receiving part 7 made of synthetic resin expands and is deformed due to the downward load from the strut 5 to sink the strut 5 as in the conventional case. Since the truncated cone-shaped portion of the lower end portion 5a of the column 5 is supported, it is possible to prevent the column 5 from tilting with respect to the vertical. Further, even when the column 5 is removed from the column receiving portion 7, since there is little biting between the lower end portion 5a and the column receiving portion 7 on the tapered surface, the column 5 can be easily removed.
【００１５】 図７及び図８は第３実施例を示し、椅子１における座体２を支持するための支 柱５の下端部５ａを、下に行くに従って直径が細くなるように截頭錐台形状に形 成する一方、合成樹脂製の脚体４に、前記支柱の下端部５ａを嵌合するための支 柱受け部７を設け、該支柱受け部７の孔面７ａを下窄まり状のテーパー状に形成 し、該支柱受け部の孔面７ａの上端には、直径の大きい段部１１を形成する。7 and 8 show a third embodiment, in which the lower end portion 5a of the support column 5 for supporting the seat body 2 of the chair 1 has a truncated truncated cone whose diameter becomes smaller as it goes downward. On the other hand, while forming the shape, a supporting column receiving portion 7 for fitting the lower end portion 5a of the supporting column is provided on the leg 4 made of synthetic resin, and the hole surface 7a of the supporting column receiving portion 7 is formed into a downward constricted shape. And a stepped portion 11 having a large diameter is formed at the upper end of the hole surface 7a of the column receiving portion.
【００１６】 他方、図７に示すように、前記支柱５における截頭錐台形状部位の上部寄り部 位の外周面には、前記段部１１に当接するリング状の係合突起１３を予め固着し ておく。図８の実施例では、下外向きに突出するような複数の係合突起１４を支 柱５における截頭錐台形状部位の上部寄り部位の外周面の円周方向に適宜間隔で 設ける。On the other hand, as shown in FIG. 7, a ring-shaped engagement projection 13 that abuts against the stepped portion 11 is preliminarily fixed to the outer peripheral surface of the column 5 in the truncated frustum-shaped portion on the upper side. I will keep it. In the embodiment shown in FIG. 8, a plurality of engaging projections 14 projecting downwardly outward are provided at appropriate intervals in the circumferential direction of the outer peripheral surface of the column 5 on the upper side of the truncated truncated cone-shaped portion.
【００１７】 そして、前記支柱の下端部５ａが支柱受け部７の孔面７ａにきっちりと嵌合し た状態で、前記の係合突起１３，１４が段部１１に当接するか、または該段部１ １に対して若干の上下隙間があるように設定するものである。いずれにしても、 このように構成すれば、支柱５に下向き荷重が作用して下端部５ａが支柱受け部 ７の孔径を広げるように変形させて、当該支柱が沈下しようとするとき、前記係 合突起１３，１４が段部１１に当接してそれ以上の支柱の沈下を防止することが できる。Then, with the lower end portion 5a of the support pillar being fitted tightly into the hole surface 7a of the support pillar receiving portion 7, the engaging projections 13 and 14 contact the step portion 11 or It is set so that there is a slight vertical gap with respect to the portion 11. In any case, according to this structure, when a downward load is applied to the support column 5 so that the lower end portion 5a is deformed so as to widen the hole diameter of the support column receiving portion 7 and the support column is going to sink, the above-mentioned engagement The fitting protrusions 13 and 14 contact the stepped portion 11 to prevent the column from further sinking.
【００１８】 図９の実施例は支柱受け部７の横孔１６と支柱の下端部５ａの挿通孔１７とを 貫通するように係止ピン１５を挿通係止させたものである。係止ピン１５には抜 け止め用の割りピン１８を取り付けることが好ましい。 なお、前記支柱の下端部５ａ外周面に粗面部１０を施し、さらに係合突起１３ ，１４やテーパー環状体１２にて段部１１に落下不能に載置するように構成して も良い。In the embodiment shown in FIG. 9, the locking pin 15 is inserted and locked so as to pass through the lateral hole 16 of the pillar receiving portion 7 and the insertion hole 17 of the lower end portion 5a of the pillar. It is preferable to attach a split pin 18 for preventing the stopper pin 15 from slipping out. A rough surface portion 10 may be provided on the outer peripheral surface of the lower end portion 5a of the support column, and the support portions 13 and 14 and the tapered annular body 12 may be mounted on the step portion 11 so as not to fall.
【図面の簡単な説明】[Brief description of drawings]
【図１】椅子の斜視図である。FIG. 1 is a perspective view of a chair.
【図２】脚体の要部下面図である。FIG. 2 is a bottom view of a main part of a leg.
【図３】支柱下端部外周面に粗面部を施した実施例であ
る。FIG. 3 is an embodiment in which a rough surface portion is provided on an outer peripheral surface of a lower end portion of a column.
【図４】粗面部の拡大断面図である。FIG. 4 is an enlarged cross-sectional view of a rough surface portion.
【図５】テーパー環状体の一部切欠き側面図である。FIG. 5 is a partially cutaway side view of the tapered annular body.
【図６】テーパー環状体を介して支柱を支柱受け部に装
着した実施例の断面図である。FIG. 6 is a cross-sectional view of an embodiment in which a column is attached to a column receiving portion via a tapered annular body.
【図７】支柱の下端部にリング状係合突起を固着した実
施例の側面図である。FIG. 7 is a side view of an embodiment in which a ring-shaped engagement protrusion is fixed to the lower end portion of a column.
【図８】係合突起の他の実施例の側面図である。FIG. 8 is a side view of another embodiment of the engaging protrusion.
【図９】挿通ピンを介して支柱を固定した実施例の側断
面図である。FIG. 9 is a side sectional view of an embodiment in which a column is fixed via an insertion pin.
１ 椅子 ２ 座体 ３ ガスシリンダ ４ 脚体 ５ 支柱 ５ａ 下端部 ７ 支柱受け部 ７ａ 孔面 １０ 粗面部 １１ 段部 １２ テーパー環状体 １３，１４ 係合突起 １５ 係止ピン DESCRIPTION OF SYMBOLS 1 chair 2 seat body 3 gas cylinder 4 leg body 5 pillar 5a lower end portion 7 pillar receiving portion 7a hole surface 10 rough surface portion 11 stepped portion 12 tapered annular body 13, 14 engaging protrusion 15 locking pin
───────────────────────────────────────────────────── フロントページの続き (72)考案者 久保 博嗣 大阪市城東区今福東１丁目４番18号 株式 会社伊藤喜工作所内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Hirotsugu Kubo 1-4-18 Imafukuhigashi, Joto-ku, Osaka-shi Ito Kikousho Co., Ltd.
Claims (3)
下端部を、下に行くに従って直径が細くなるように截頭
錐台形状に形成する一方、合成樹脂製の脚体に、前記支
柱の下端部を嵌合するための支柱受け部を設け、該支柱
受け部の孔面を下窄まり状のテーパー状に形成し、前記
支柱の下端部外周面もしくは支柱受け部の孔面のいずれ
か一方または双方には、粗面部を設けたことを特徴とす
る椅子における脚装置。1. A lower end of a pillar for supporting a seat in a chair is formed in a truncated truncated cone shape so that the diameter becomes smaller as it goes downward, while the pillar is formed on a leg made of synthetic resin. A column receiving portion for fitting the lower end of the column is formed, and the hole surface of the column receiving portion is formed in a tapered shape with a downward constriction, and either the outer peripheral surface of the lower end of the column or the hole surface of the column receiving portion is formed. A leg device in a chair, characterized in that one or both of them is provided with a rough surface portion.
下端部を、下に行くに従って直径が細くなるように截頭
錐台形状に形成する一方、合成樹脂製の脚体に、前記支
柱の下端部を嵌合するための支柱受け部を設け、該支柱
受け部の孔面を下窄まり状のテーパー状に形成し、該支
柱受け部の孔面の上端には、直径の大きい段部を形成
し、該段部には、前記支柱下端部の截頭錐台形状部分の
上部寄り部位に被嵌係止する金属製のテーパー環状体を
載置したことを特徴とする椅子における脚装置。2. A lower end of a column for supporting a seat body of a chair is formed in a truncated cone shape so that the diameter becomes smaller as it goes downward, while the column is made of a synthetic resin. A column receiving portion for fitting the lower end portion of the column is formed, the hole surface of the column receiving portion is formed in a tapered shape with a downward constriction, and the upper end of the hole surface of the column receiving portion has a step with a large diameter. A leg of a chair characterized in that a metal taper annular body which is fitted and locked to the upper end portion of the truncated truncated cone-shaped portion of the lower end of the column is placed on the stepped portion. apparatus.
下端部を、下に行くに従って直径が細くなるように截頭
錐台形状に形成する一方、合成樹脂製の脚体に、前記支
柱の下端部を嵌合するための支柱受け部を設け、該支柱
受け部の孔面を下窄まり状のテーパー状に形成し、該支
柱受け部の孔面の上端には、直径の大きい段部を形成
し、前記支柱における截頭錐台形状部位の上部寄り部位
の外周面には、前記段部に当接する係合突起を設けたこ
とを特徴とする椅子における脚装置。3. A lower end of a pillar for supporting a seat of a chair is formed in a truncated truncated cone shape so that the diameter becomes smaller as it goes downward, while the pillar is formed on a leg made of synthetic resin. A column receiving portion for fitting the lower end portion of the column is formed, the hole surface of the column receiving portion is formed in a tapered shape with a downward constriction, and the upper end of the hole surface of the column receiving portion has a step with a large diameter. A leg device in a chair, characterized in that an engaging protrusion that abuts the step is provided on an outer peripheral surface of a portion of the column that is closer to the upper part of the truncated truncated cone-shaped portion of the pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991102573U JP2531395Y2 (en) | 1991-12-12 | 1991-12-12 | Leg device in chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991102573U JP2531395Y2 (en) | 1991-12-12 | 1991-12-12 | Leg device in chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0548748U true JPH0548748U (en) | 1993-06-29 |
| JP2531395Y2 JP2531395Y2 (en) | 1997-04-02 |
Family
ID=14330972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991102573U Expired - Lifetime JP2531395Y2 (en) | 1991-12-12 | 1991-12-12 | Leg device in chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531395Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0431544U (en) * | 1990-07-06 | 1992-03-13 | ||
| JPH0541450U (en) * | 1991-11-19 | 1993-06-08 | デユポン・ジヤパン・リミテツド | Supporting cylinder support device for swivel chair |
-
1991
- 1991-12-12 JP JP1991102573U patent/JP2531395Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0431544U (en) * | 1990-07-06 | 1992-03-13 | ||
| JPH0541450U (en) * | 1991-11-19 | 1993-06-08 | デユポン・ジヤパン・リミテツド | Supporting cylinder support device for swivel chair |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2531395Y2 (en) | 1997-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19961112 |