JP4484319B2

JP4484319B2 - Leg end attachment mounting structure

Info

Publication number: JP4484319B2
Application number: JP2000160178A
Authority: JP
Inventors: 信昭那須
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2000-05-30
Filing date: 2000-05-30
Publication date: 2010-06-16
Anticipated expiration: 2020-05-30
Also published as: JP2001340152A

Description

【０００１】
【発明の属する技術分野】
本発明は、机、椅子、キャビネット、書棚、その他の家具、または建築物や屋外装置等(以下家具等という)における脚や支柱(以下支柱を含めて脚という)の下端部に、高さ調節用のアジャスタやキャスタなどの脚端具を取り付ける構造に関する。
【０００２】
【従来の技術】
このような脚端具取付構造としては、例えば特開平６−２４５８３２号公報に開示されているようなものがある。
【０００３】
この公報に開示されているアジャスタ装置では、角筒状の脚の内面に、ストッパ部となる突部や段部等を設け、その下端より、２分割したナット部材を、そのねじ孔形成部分でアジャスタの雄ねじ部を挟むようにして、互いに閉じ合わせた状態で押し込み、ナット部材の外周部に設けた爪を上記突部に係合させることにより、ナット部材を脚より抜け止めしている。
【０００４】
【発明が解決しようとする課題】
しかし、上述のような従来の構造では、僅かな厚みしかない脚の内面に突部や段部を設けなければならず、その加工が面倒であるとともに、荷重がかかる脚の下部の強度の低下を招き、かつ脚内において、ナット部材ががたつくおそれがある。
【０００５】
本発明は、従来の技術が有する上記のような問題点に鑑み、脚の端部に何らの加工を施すことなく、脚端具を、強固にかつ簡単に取り付けることができるとともに、製造が容易で、脚端具ががたつくことがないようにした脚端具取付構造を提供することを目的としている。
【０００６】
【課題を解決するための手段】
本発明によると、上記課題は、次のようにして解決される。
(１) 家具等の脚における開口する下端に、受部材の嵌合部を嵌合し、この受部材に、脚端具を取り付けるようにした脚端具取付構造において、前記受部材の嵌合部を放射状に複数に分割して、各分割体が外方に向かって弾性撓曲しうるようにするとともに、前記嵌合部の内部とその下方とに、互いに対向する内側面が上方に向かって拡開する凹孔と、該凹孔から受部材の下端に至る通孔とを設け、かつ前記凹孔内に、対応する側面が上方に向かって拡開する楔部材を配設し、該楔部材と脚端具とを、前記通孔へ挿通した脚端具支持用のボルトをもって締着することにより、前記楔部材が各分割体を外方へ拡開させ、脚の下端部内面に圧接させるようにする。
【０００７】
(２) 上記(１)項において、受部材全体を、放射状に複数に分割し、各分割体の互いに対向する面のいずれか一方に位置決め用の突起を、かつ他方に前記突起と補形をなす凹部を設ける。
【０００８】
(３) 上記(１)または(２)項において、楔部材にねじ孔を設け、脚端具の上端を受部材の下面に当接し、かつ脚端具より上方に延出するボルトを前記ねじ孔に螺合することにより、楔部材と脚端具とを締着する。
【０００９】
(４) 上記(１)または(２)項において、楔部材と通孔とを貫通するボルトの上端における頭部を、楔部材の上端面に当接させ、かつ前記ボルトの雄ねじ部に螺合するナットを、受部材の下面に当接させて、前記ボルトにより楔部材と脚端具とを締着し、かつ前記ナットより下方に延出するボルトの雄ねじ部に、脚端具を螺合する。
【００１０】
(５) 上記(１)〜(４)項のいずれかにおいて、受部材における嵌合部の上端部に、内方に向かって延出し、かつ楔部材が凹孔から抜け出すのを阻止する内向き延出片を設ける。
【００１１】
(６) 上記(１)〜(３)項、及びそれらに従属する(５)のいずれかにおいて、脚端具を、キャスタとする。
【００１２】
(７) 上記(１)〜(３)項、及びそれらに従属する(５)のいずれかにおいて、脚端具を、脚の高さ調節用のアジャスタとする。
【００１３】
【発明の実施の形態】
以下、本発明の第１の実施形態を、図１及び図２を参照して説明する。
【００１４】
(１)は、テーブル等の家具の脚で、下端が開口する円筒形をなしている。
脚(１)の下端の開口部には、合成樹脂材料により成形された受部材(２)における円筒状の嵌合部(３)が、その下端に設けた拡径鍔(４)が脚(１)の下端面に当接するようにして嵌合されている。
【００１５】
図２に示すように、受部材(２)は、その中心線を含む垂直の分割面により分割体(2A)(2B)に２分割され、各分割体(2A)(2B)の接合面の下部一側には、位置決め用の円形の突起(５)が、同じく他側には、突起(５)と補形をなす凹部(６)が設けられている。
【００１６】
各分割体(2A)(2B)の上端から拡径鍔(４)に亘って、分割面の中心から分割面と直交する方向のスリット(７)が切設され、各分割体(2A)(2B)は、スリット(７)の存在により、外方に向かって弾性撓曲することができる。
【００１７】
嵌合部(３)の内部は、互いに対向する内側面が上方に向かって拡開し、かつ稜線が分割面及びスリット(７)と一致する倒立截頭四角錐形の凹孔(８)となっている。
【００１８】
各分割体(2A)(2B)の頂壁(９)も、スリット(７)により径方向に分割され、これにより、嵌合部(３)の端部には、内方に向かって延出し、かつ後述する楔部材(12)が凹部(８)から抜け出すのを阻止する内向き延出片が形成されている。
【００１９】
受部材(２)における凹孔(８)の底壁(8a)の中央には、上下に並ぶ通孔(10)と拡径孔(11)とが設けられている。
【００２０】
凹孔(８)内には、その内側面と同一の開き角度をもって外側面が上方に向かって拡開するように傾斜し、かつ下端面を凹孔(８)の底壁(8a)よりやや大とした倒立截頭四角錐形の楔部材(12)が嵌合されている。
【００２１】
楔部材(12)の上端面中央には、後述するボルト(22)の頭部(22a)(図３及び図４参照)を相対回転不能として嵌合しうるようにしたすり割(13a)付きの受孔(13)が形成され、その下方には、楔部材(12)の下端に至るねじ孔(14)が穿設されている。
【００２２】
(15)は、脚端具の一つであるキャスタで、両側にローラ(16)(16)を支持する支持体(17)の一端より、ボルト(18)の雄ねじ部(18a)を上向きに突出させたものである。
ボルト(18)は、雄ねじ部(18a)の下端に六角形の頭部(18b)を有し、さらにその下方に、支持体(17)に対して回転可能な垂直軸部(図示略)を有している。
【００２３】
(19)(20)は、ボルト(18)の雄ねじ部(18a)に嵌合したスプリングワッシャ及び平ワッシャである。
【００２４】
次に組立て要領について説明する。
【００２５】
まず、楔部材(12)を凹孔(８)内に嵌合し、両分割体(2A)(2B)を閉じ合わせたときの通孔(10)に、ボルト(18)の雄ねじ部(18a)を下方より挿通した後、雄ねじ部(18a)の上端部を楔部材(12)のねじ孔(14)に螺合して、軽く締めることにより、キャスタ(15)を受部材(２)に仮組みする。
【００２６】
仮組みした受部材(２)の嵌合部(３)を、脚(１)の下端開口部に嵌合し、拡径鍔(４)を脚(１)の下端面に当接させた後、スパナ等をもってボルト(18)を強く締め込むと、楔部材(12)は下方へ引き寄せられる。この際、楔部材(12)が凹孔(８)の内面を押圧するので、嵌合部(３)の各分割体(2A)(2B)は、スリット(７)を境として外方へ拡開して、脚(１)の下端部の内面を強力に圧接し、受部材(２)は脚(１)の下端部に強固に結合される。これにより、受部材(２)は脚(１)から抜けなくなり、かつキャスタ(15)は、楔部材(12)および受部材(２)を介して、脚(１)に強固に取り付けられる。
【００２７】
なお、楔部材(12)を凹孔(８)に嵌合した状態で、受部材(２)を先に脚(１)の下端部に嵌合した後、キャスタ(15)の雄ねじ部(18a)を、通孔(10)を挿通させて、楔部材(12)のねじ孔(14)に螺合させてもよい。
【００２８】
図３及び図４は、本発明の第２の実施形態を示す。なお第２の実施形態において、第１の実施形態と同一の部材には同一の符号を付すに止め、その詳細な説明は省略する。
【００２９】
第２の実施形態においては、第１の実施形態におけるのと同様の受部材(２)及び楔部材(12)を用いて、高さ調節用のアジャスタ(21)とした脚端具を、脚(１)に取り付けるようにしている。
【００３０】
アジャスタボルトと兼用のボルト(22)の六角形の頭部(22a)を、楔部材(12)の上端の受孔(13)に相対回転不能として嵌合させて、ボルト(22)の軸部(22b)を、楔部材(12)のねじ孔(14)に挿通し、その状態で、楔部材(12)を凹孔(８)に嵌合し、かつ楔部材(12)から下方に延出するボルト(22)の軸部(22b)が、通孔(10)を貫通するようにして、分割体(2A)(2B)を閉じ合せ、その状態で、完成した受部材(２)を、脚(１)の下端開口部に嵌合する。
【００３１】
なお、その前に、完成した受部材(２)の通孔(10)より下方に延出するボルト(22)の軸部(22b)の先端部に形成した雄ねじ部(22c)に、ナット(23)やアジャスタ(21)の本体となる接床部材(24)の雌ねじ部(23a)(24a)を軽く螺合しておいてもよい。
【００３２】
ついで、ナット(23)を強く締め込むと、ナット(23)は、受部材(２)における拡径孔(11)と通孔(10)との段差部に当接し、かつ楔部材(12)はナット(23)に向かって強く引き寄せられ、第１の実施形態におけるのと同様の凹孔(８)と楔部材(12)との楔作用により、嵌合部(13)の各分割体(2A)(2B)は、脚(１)内面に向かって強力に押圧され、受部材(２)は脚(１)の下端部に強固に結合される。
【００３３】
その後、ナット(23)より下方に延出するボルト(22)の雄ねじ部(22c)に、接床部材(24)の雌ねじ部(24a)を、その高さが所望となるようにして螺合する。
【００３４】
第２の実施形態によると、第１の実施形態におけるのと同様に、脚(１)の端部に何らの加工を施すことなく、アジャスタ(21)その他の脚端具を、強固に、かつ簡単に取り付けることができる。
【００３５】
なお、本発明は、以上の２つの実施形態のみに限定されるものではなく、幾多の変化、変更が可能である。
【００３６】
例えば、受部材(２)の嵌合部(３)のみを放射状に複数に分割し、それ以外の部分、例えば、拡径鍔(４)を非分割の一体型のものとしたり、逆に、受部材(２)全体を、放射状に３個以上に分割したり、凹孔(８)の形状、及び楔部材(12)の外形を、倒立截頭円錐形としたり(この場合、凹孔(８)と楔部材(12)との間に、キーとキー溝のような回り止め手段を設けるのが好ましい)、内向き延出片(頂壁(９))を省略して、凹孔(８)の上端を開放したり、脚(１)を角筒状とし、それに合わせて、嵌合部(３)の外形、凹孔(８)及び楔部材(12)の形状を、角柱状及び倒立截頭角錐形としたりすることもできる。
【００３７】
【発明の効果】
請求項１記載の発明によると、ボルトにより楔部材と脚端具とを締めつけると、楔部材が受部材の凹孔に楔入して、複数に分割された受部材の嵌合部の各分割体が脚の内面に押圧され、受部材は、脚の下端部に強固に結合される。
【００３８】
したがって、従来のように、脚自体に何らの加工を施すことなく、脚端具を、がたつくことなく、強固に、かつ簡単に取り付けることができる。
【００３９】
また、ボルトの締め付けを緩めることによって、受部材を、脚の下端部から容易に取り外すことができるとともに、脚と受部材と楔部材と脚端具とを、完全に分離することができるので、廃棄処分時などにおける材料毎の分別の必要な場合に都合がよい。
【００４０】
請求項２記載の発明によると、受部材を分割型としたため、受部材内への楔部材やボルトの挿入が容易になり、脚への組付け作業を短時間で行なうことができる。
【００４１】
請求項３記載の発明によると、脚端具のボルトを、受部材の通孔を通して、楔部材のねじ孔にねじ込むだけの簡単な作業で、脚端具を受部材に取り付けることができ、組付け作業が容易である。これは、特に、脚端具をキャスタ等とするときに適している。
【００４２】
請求項４記載の発明のよると、ナットの締付けにより、ボルトは、楔部材の楔作用を伴って、受部材に強固に固定されるので、ナットの下方に延出するボルトの雄ねじ部に螺合する脚端具を回転させた際に、ボルトがつれ回されたり、ナットが緩んだりすることがなく、高い信頼性を保つことができる。これは、特に、脚端具を、脚の高さ調節用のアジャスタとするときに好適である。
【００４３】
請求項５記載の発明によると、内向き延出片により、凹孔内に嵌合した楔部材が凹孔から脱落するのを阻止することがきるので、受部材を脚の開口端部に嵌合した後から、ボルトを受部材の通孔を通して、楔部材に螺合させたり(請求項３の場合)、または、楔部材とともにボルトと受部材に装着した状態で、受部材を脚の開口端部に嵌合し、その後からボルトの雄ねじ部にナットや脚端具を螺合させたり(請求項４の場合)することができる。
【００４４】
請求項６記載の発明によると、キャスタのがたつきを確実に防止することができる。
【００４５】
請求項７記載の発明によると、アジャスタにより、脚の高さを調節している際に、ボルトやナットがつれ回されたり、緩んだりするのを確実に防止することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態である脚のキャスタ取付部分の縦断正面図である。
【図２】同じく、分解斜視図である。
【図３】本発明の第２の実施形態である脚のアジャスタ取付部分の縦断正面図である。
【図４】同じく、分解斜視図である。
【符号の説明】
(１)脚
(２)受部材
(2A)(2B)分割体
(３)嵌合部
(４)拡径鍔
(５)突起
(６)凹部
(７)スリット
(８)凹孔
(8a)底壁
(９)頂壁(内向き延出片)
(10)通孔
(11)拡径孔
(12)楔部材
(13)受孔
(13a)すり割
(14)ねじ孔
(15)キャスタ(脚端具)
(16)ローラ
(17)支持体
(18)ボルト
(18a)雄ねじ部
(18b)頭部
(19)スプリングワッシャ
(20)平ワッシャ
(21)アジャスタ(脚端具)
(22)ボルト
(22a)頭部
(22b)軸部
(22c)雄ねじ部
(23)ナット
(23a)雌ねじ部
(24)接床部材
(24a)雌ねじ部[0001]
BACKGROUND OF THE INVENTION
The present invention adjusts the height of the lower end of a leg or support (hereinafter referred to as a leg including a support) in a desk, chair, cabinet, bookcase, other furniture, or a building or outdoor device (hereinafter referred to as furniture). It is related with the structure which attaches leg ends, such as an adjuster and a caster.
[0002]
[Prior art]
An example of such a leg end attachment mounting structure is disclosed in Japanese Patent Laid-Open No. 6-245832.
[0003]
In the adjuster device disclosed in this gazette, a protrusion or stepped portion serving as a stopper is provided on the inner surface of a rectangular tube-shaped leg, and a nut member divided into two from its lower end is formed at its screw hole forming portion. The nut member is prevented from coming off from the leg by pressing the adjuster so that the male screw portion is sandwiched between the adjuster and the nail provided on the outer peripheral portion of the nut member.
[0004]
[Problems to be solved by the invention]
However, in the conventional structure as described above, a protrusion or a step must be provided on the inner surface of the leg which has a slight thickness, and the processing is troublesome and the strength of the lower part of the leg where the load is applied is reduced. And the nut member may rattle in the legs.
[0005]
In view of the above-mentioned problems of the prior art, the present invention can attach a leg end tool firmly and easily without any processing on the end portion of the leg, and is easy to manufacture. Therefore, an object of the present invention is to provide a leg end attachment mounting structure that prevents the leg end attachment from rattling.
[0006]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) In a leg end fitting mounting structure in which a fitting portion of a receiving member is fitted to an open lower end of a leg of furniture or the like, and the leg end fitting is attached to the receiving member, the fitting of the receiving member The portion is divided into a plurality of portions so that each of the divided bodies can be elastically bent outward, and the inner surfaces facing each other are directed upward inside and below the fitting portion. And a through hole extending from the concave hole to the lower end of the receiving member, and a wedge member having a corresponding side surface expanding upward is disposed in the concave hole, By fastening the wedge member and the leg end tool with a bolt for supporting the leg end tool inserted into the through hole, the wedge member expands each divided body outward, and the inner surface of the lower end of the leg Try to press .
[0007]
(2) In the above item (1), the entire receiving member is radially divided into a plurality of pieces, positioning protrusions are provided on one of the opposing surfaces of each divided body, and the protrusions and complements are provided on the other. A recess is formed.
[0008]
(3) In the above item (1) or (2), a screw hole is provided in the wedge member, the upper end of the leg end tool is in contact with the lower surface of the receiving member, and the bolt extending upward from the leg end tool is attached to the screw. The wedge member and the leg end tool are fastened by screwing into the hole.
[0009]
(4) In the above item (1) or (2), the head at the upper end of the bolt passing through the wedge member and the through hole is brought into contact with the upper end surface of the wedge member and screwed into the male thread portion of the bolt. The nut to be abutted against the lower surface of the receiving member, the wedge member and the leg end tool are fastened by the bolt, and the leg end tool is screwed into the male threaded portion of the bolt extending downward from the nut. To do.
[0010]
(5) In any one of the above items (1) to (4), inwardly extending to the upper end of the fitting portion in the receiving member and preventing the wedge member from coming out of the recessed hole An extension piece is provided.
[0011]
(6) In any of the above items (1) to (3) and subordinate (5), the leg end device is a caster.
[0012]
(7) In any of the above items (1) to (3) and subordinate (5), the leg end tool is an adjuster for adjusting the height of the leg.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
[0014]
(1) is a leg of furniture such as a table and has a cylindrical shape with an open lower end.
At the opening at the lower end of the leg (1), a cylindrical fitting portion (3) in the receiving member (2) molded from a synthetic resin material is provided, and a diameter expansion rod (4) provided at the lower end of the leg (1) It is fitted so as to contact the lower end surface of 1).
[0015]
As shown in FIG. 2, the receiving member (2) is divided into two parts (2A) and (2B) by a vertical dividing surface including the center line, and the joining surface of each divided body (2A) and (2B) is divided. A circular protrusion (5) for positioning is provided on one lower side, and a concave part (6) complementary to the protrusion (5) is provided on the other side.
[0016]
A slit (7) in the direction perpendicular to the dividing surface is cut from the center of the dividing surface from the upper end of each divided body (2A) (2B) to the enlarged diameter ridge (4), and each divided body (2A) ( 2B) can be elastically bent outward due to the presence of the slit (7).
[0017]
The inside of the fitting portion (3) is an inverted truncated quadrangular pyramid-shaped concave hole (8) whose inner side surfaces facing each other open upward and whose ridge line coincides with the dividing surface and the slit (7). It has become.
[0018]
The top wall (9) of each divided body (2A) (2B) is also divided in the radial direction by the slit (7), so that the end of the fitting portion (3) extends inward. And the inwardly extending piece which prevents that the wedge member (12) mentioned later pulls out from a recessed part (8) is formed.
[0019]
In the center of the bottom wall (8a) of the concave hole (8) in the receiving member (2), a through hole (10) and an enlarged diameter hole (11) are provided.
[0020]
In the concave hole (8), the outer surface is inclined so as to expand upward with the same opening angle as the inner side surface , and the lower end surface is slightly more than the bottom wall (8a) of the concave hole (8). A large inverted truncated quadrangular pyramid wedge member (12) is fitted.
[0021]
At the center of the upper end surface of the wedge member (12), there is a slot (13a) that can fit a head (22a) (see FIGS. 3 and 4) of a bolt (22), which will be described later, such that relative rotation is impossible. A receiving hole (13) is formed, and a screw hole (14) reaching the lower end of the wedge member (12) is formed below the receiving hole (13).
[0022]
(15) is a caster which is one of the leg ends, and the male threaded part (18a) of the bolt (18) is directed upward from one end of the support (17) which supports the rollers (16) and (16) on both sides. It is a protruding one.
The bolt (18) has a hexagonal head (18b) at the lower end of the male screw portion (18a), and a vertical shaft portion (not shown) that can rotate relative to the support (17) is further provided below the bolt (18). Have.
[0023]
(19) and (20) are a spring washer and a flat washer fitted to the male thread portion (18a) of the bolt (18).
[0024]
Next, the assembly procedure will be described.
[0025]
First, the wedge member (12) is fitted into the concave hole (8), and the two threaded bodies (2A) and (2B) are closed, and the male screw portion (18a) of the bolt (18) is inserted into the through hole (10). ) Is inserted from below, and the upper end of the male threaded portion (18a) is screwed into the threaded hole (14) of the wedge member (12) and lightly tightened, so that the caster (15) is attached to the receiving member (2). Temporarily assemble.
[0026]
After fitting the fitting portion (3) of the temporarily assembled receiving member (2) into the lower end opening of the leg (1) and bringing the enlarged diameter rod (4) into contact with the lower end surface of the leg (1) When the bolt (18) is tightened with a spanner or the like, the wedge member (12) is drawn downward. At this time, since the wedge member (12) presses the inner surface of the concave hole (8), each of the divided bodies (2A) and (2B) of the fitting portion (3) expands outward with the slit (7) as a boundary. The inner surface of the lower end portion of the leg (1) is pressed firmly and the receiving member (2) is firmly coupled to the lower end portion of the leg (1). As a result, the receiving member (2) cannot be removed from the leg (1), and the caster (15) is firmly attached to the leg (1) via the wedge member (12) and the receiving member (2).
[0027]
In the state where the wedge member (12) is fitted in the concave hole (8), the receiving member (2) is first fitted to the lower end of the leg (1), and then the male threaded portion (18a) of the caster (15). ) May be inserted into the through hole (10) and screwed into the screw hole (14) of the wedge member (12).
[0028]
3 and 4 show a second embodiment of the present invention. In the second embodiment, the same members as those in the first embodiment are designated by the same reference numerals, and detailed description thereof is omitted.
[0029]
In the second embodiment, a leg end device having a height adjusting adjuster (21) using a receiving member (2) and a wedge member (12) similar to those in the first embodiment is used. (1) is attached.
[0030]
The hexagonal head (22a) of the bolt (22), which is also used as an adjuster bolt, is fitted into the receiving hole (13) at the upper end of the wedge member (12) so that it cannot be rotated relative to the shaft of the bolt (22). (22b) is inserted into the screw hole (14) of the wedge member (12). In this state, the wedge member (12) is fitted into the concave hole (8) and extends downward from the wedge member (12). The shaft (22b) of the bolt (22) that goes out passes through the through hole (10) so that the divided bodies (2A) and (2B) are closed, and in this state, the completed receiving member (2) is It fits into the lower end opening of the leg (1).
[0031]
Before that, the nut (22c) is formed on the end of the shaft (22b) of the bolt (22) extending downward from the through hole (10) of the completed receiving member (2). 23) and the female threaded portions (23a) and (24a) of the floor contact member (24) serving as the main body of the adjuster (21) may be lightly screwed together.
[0032]
Next, when the nut (23) is firmly tightened, the nut (23) comes into contact with the stepped portion between the enlarged diameter hole (11) and the through hole (10) in the receiving member (2), and the wedge member (12) Is strongly attracted toward the nut (23), and each divided body (13) of the fitting portion (13) is caused by the wedge action of the concave hole (8) and the wedge member (12) as in the first embodiment. 2A) and 2B are strongly pressed toward the inner surface of the leg (1), and the receiving member (2) is firmly coupled to the lower end of the leg (1).
[0033]
Thereafter, the female threaded portion (24a) of the floor contact member (24) is screwed into the male threaded portion (22c) of the bolt (22) extending downward from the nut (23) so that the height is desired. To do.
[0034]
According to the second embodiment, as in the first embodiment, the adjuster (21) and other leg end tools can be firmly and without performing any processing on the end of the leg (1). Easy to install.
[0035]
The present invention is not limited to the above two embodiments, and many changes and modifications can be made.
[0036]
For example, only the fitting part (3) of the receiving member (2) is radially divided into a plurality of parts, and the other part, for example, the diameter expansion rod (4) is a non-divided integral type, The entire receiving member (2) is radially divided into three or more, or the shape of the concave hole (8) and the outer shape of the wedge member (12) are inverted frustoconical (in this case, the concave hole ( 8) and the wedge member (12) are preferably provided with a detent means such as a key and a key groove), the inwardly extending piece (top wall (9)) is omitted, and a concave hole ( 8) Open the upper end or make the leg (1) into a square tube shape, and adjust the outer shape of the fitting part (3), the shape of the concave hole (8) and the wedge member (12) to a prismatic shape and It can also be an inverted truncated pyramid.
[0037]
【The invention's effect】
According to the first aspect of the present invention, when the wedge member and the leg end are tightened with the bolt, the wedge member wedges into the concave hole of the receiving member, and each of the divided portions of the receiving portion of the receiving member is divided. The body is pressed against the inner surface of the leg, and the receiving member is firmly coupled to the lower end of the leg.
[0038]
Therefore, unlike the conventional art, the leg end tool can be firmly and easily attached without rattling without performing any processing on the leg itself.
[0039]
Further, by loosening the bolt tightening, the receiving member can be easily removed from the lower end of the leg, and the leg, the receiving member, the wedge member, and the leg end tool can be completely separated. This is convenient when it is necessary to separate each material at the time of disposal.
[0040]
According to the second aspect of the present invention, since the receiving member is divided, the wedge member and the bolt can be easily inserted into the receiving member, and the assembly work to the leg can be performed in a short time.
[0041]
According to the third aspect of the present invention, the leg end tool can be attached to the receiving member by a simple operation of screwing the bolt of the leg end tool into the screw hole of the wedge member through the through hole of the receiving member. Installation work is easy. This is particularly suitable when the leg end tool is a caster or the like.
[0042]
According to the fourth aspect of the present invention, since the bolt is firmly fixed to the receiving member with the wedge action of the wedge member by tightening the nut, the screw is screwed into the male thread portion of the bolt extending below the nut. When the mating leg ends are rotated, the bolt is not twisted and the nut is not loosened, and high reliability can be maintained. This is particularly suitable when the leg end tool is an adjuster for adjusting the height of the leg.
[0043]
According to the fifth aspect of the invention, the inwardly extending piece can prevent the wedge member fitted in the concave hole from falling out of the concave hole, so that the receiving member is fitted to the opening end of the leg. Then, the bolt is screwed into the wedge member through the through hole of the receiving member (in the case of claim 3), or the bolt is received on the bolt and the receiving member together with the wedge member. A nut or a leg end tool can be screwed onto the male threaded portion of the bolt after fitting into the end portion (in the case of claim 4).
[0044]
According to the sixth aspect of the present invention, it is possible to reliably prevent the casters from rattling.
[0045]
According to the seventh aspect of the invention, the adjuster can reliably prevent the bolts and nuts from being twisted or loosened when adjusting the height of the legs.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a caster mounting portion of a leg according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view of the same.
FIG. 3 is a longitudinal front view of a leg adjuster mounting portion according to a second embodiment of the present invention.
FIG. 4 is an exploded perspective view of the same.
[Explanation of symbols]
(1) Leg
(2) Receiving member
(2A) (2B) Division
(3) Fitting part
(4) Diameter expansion
(5) Protrusion
(6) Recess
(7) Slit
(8) Recessed hole
(8a) Bottom wall
(9) Top wall (inward extending piece)
(10) Through hole
(11) Expanded hole
(12) Wedge member
(13) Receiving hole
(13a) Slot
(14) Screw hole
(15) Caster (leg end tool)
(16) Roller
(17) Support
(18) Bolt
(18a) Male thread
(18b) Head
(19) Spring washer
(20) Flat washer
(21) Adjuster (leg end tool)
(22) Bolt
(22a) Head
(22b) Shaft
(22c) Male thread
(23) Nut
(23a) Female thread
(24) Flooring materials
(24a) Female thread

Claims

In the leg end fitting mounting structure in which the fitting end of the receiving member is fitted to the lower end of the leg of furniture or the like, and the leg end fitting is attached to the receiving member.
The fitting portion of the receiving member is radially divided into a plurality of pieces so that each divided body can be elastically bent outward, and the inside and the bottom of the fitting portion are opposed to each other. and concavity of the inner surface widens upward, and a through hole extending from the recessed hole at the lower end of the receiving member is provided, and in the concave hole, corresponding side is widened toward the upper wedge member And fastening the wedge member and the leg end tool with a bolt for supporting the leg end tool inserted into the through hole, so that the wedge member expands each divided body outward, A leg end attachment mounting structure characterized by being in pressure contact with the inner surface of the lower end of the leg .

The entire receiving member is radially divided into a plurality of portions, and a positioning projection is provided on one of the opposing surfaces of each divided body, and a recess that complements the projection is provided on the other. Leg end attachment mounting structure.

By providing a screw hole in the wedge member, abutting the upper end of the leg end tool against the lower surface of the receiving member, and screwing a bolt extending upward from the leg end tool into the screw hole, the wedge member and the leg end tool The leg end attachment mounting structure according to claim 1 or 2, wherein:

The head at the upper end of the bolt that passes through the wedge member and the through hole is brought into contact with the upper end surface of the wedge member, and the nut that is screwed into the male screw portion of the bolt is brought into contact with the lower surface of the receiving member, The leg end device mounting structure according to claim 1 or 2, wherein the wedge member and the leg end device are fastened by the bolt, and the leg end device is screwed into a male screw portion of the bolt extending downward from the nut. .

5. The inwardly extending piece that extends inward and prevents the wedge member from slipping out of the recessed hole is provided at the upper end of the fitting portion of the receiving member. Leg end attachment mounting structure.

The leg end attachment mounting structure according to any one of claims 1 to 3, and a leg end attachment according to any one of claims 1 to 3, wherein the leg end is a caster.

6. The leg end device mounting structure according to claim 1, wherein the leg end device is an adjuster for adjusting a leg height.