JP7202137B2

JP7202137B2 - Frame connection structure and furniture with top plate

Info

Publication number: JP7202137B2
Application number: JP2018197621A
Authority: JP
Inventors: 学山西; 亜加梨寺尾; 祐介森本
Original assignee: Kokuyo Co Ltd
Current assignee: Kokuyo Co Ltd
Priority date: 2018-10-19
Filing date: 2018-10-19
Publication date: 2023-01-11
Anticipated expiration: 2038-10-19
Also published as: JP2020063832A

Description

特許法第３０条第２項適用平成３０年７月２６日、ＳＥＮＴＩＲ展示会にて公開Article 30, Paragraph 2 of the Patent Act applied July 26, 2018, published at the SENTIR Exhibition

本発明は、複数の部材が連結されてなるフレームにおける部材間の連結構造、および、そのようなフレームを備える天板付家具に関する。 TECHNICAL FIELD The present invention relates to a connecting structure between members in a frame formed by connecting a plurality of members, and to furniture with a top plate including such a frame.

多くの家具は、複数の部材が連結されてなる枠体状のフレーム（支持構造体）に、各種の部材が支持された構成となっている。例えば天板付家具は、一対の脚体とこれらの間に架け渡されたビーム（梁）とからなる門型状のフレームを例えば２組備え、各フレームのビーム上に、天板が支持された構成となっている。 Many pieces of furniture have a structure in which various members are supported by a frame-shaped frame (support structure) formed by connecting a plurality of members. For example, a piece of furniture with a top plate has, for example, two sets of gate-shaped frames each composed of a pair of legs and a beam (beam) that spans between them, and the top plate is supported on the beams of each frame. It is configured.

フレームの強度は家具の基本的な強度を規定するものであり、フレームには高い強度が要求される。このためには、フレームを構成する個々の部材の強度を十分に高いものとすることはもちろんのこと、部材間が十分な強度で連結される必要がある。そこで、十分に高い強度が担保されるようなフレームの連結構造が模索されている。 The strength of the frame defines the basic strength of furniture, and high strength is required for the frame. For this purpose, it is necessary that the strength of each member constituting the frame is sufficiently high, and that the members are connected with sufficient strength. Therefore, a frame connection structure that ensures a sufficiently high strength has been sought.

例えば、特許文献１では、天板付家具のフレームにおいて、梁（梁フレーム）と脚体（パネル脚）を十分な強度で連結することを可能とする連結構造が提案されている。ここでは、梁フレームの端面に、先端に向かうにつれて先細りする略三角形状の位置決め用の突起が設けられる。また、パネル脚における梁フレームが連結されるべき位置に、板金素材の連結金具が設けられており、この連結金具の端面に、該位置決め用の突起と対応する略三角形状の切除部が形成される。このような構成において、梁フレームの端面と連結金具の端面を対向配置して、梁フレームに設けられた固定架材と、連結金具に設けられた固定架材との間にボルトを締め込んでいくと、梁フレームの端面と連結金具の端面が、位置決め用の突起および切除部の各傾斜面に導かれつつ、相寄る方向に引き寄せられ、最終的には、梁フレームの端面と連結金具の端面とが全面的に接触して互いに押圧し合う状態が形成される。これにより、梁フレームとパネル脚とが高い強度で連結される。 For example, Patent Literature 1 proposes a connecting structure capable of connecting a beam (beam frame) and a leg (panel leg) with sufficient strength in a frame of furniture with a top plate. Here, the end face of the beam frame is provided with a substantially triangular positioning projection that tapers toward the tip. In addition, a connecting fitting made of sheet metal material is provided at a position where the beam frame of the panel leg is to be connected, and an approximately triangular cutout portion corresponding to the positioning projection is formed on the end face of this connecting fitting. be. In such a configuration, the end face of the beam frame and the end face of the connecting fitting are arranged to face each other, and bolts are tightened between the fixed members provided on the beam frame and the fixed members provided on the connecting fittings. As it moves forward, the end face of the beam frame and the end face of the connecting fitting are drawn toward each other while being guided by the positioning projections and the inclined faces of the cut-out portion, and finally, the end face of the beam frame and the end face of the connecting fitting are pulled together. A state is formed in which the end surfaces are in full contact with each other and pressed against each other. Thereby, the beam frame and the panel leg are connected with high strength.

特開２００８－２８１１４７号公報JP 2008-281147 A

特許文献１の連結構造においては、梁フレームの端面と連結金具の端面とが全面的に接触して互いに押圧しあう状態が形成されることで、高い連結強度が実現されている。ただし、梁フレームの端面と連結金具の端面とを全面的に接触させるためには、両端面の形状が十分な精度で合致している必要があり、高い加工精度が必要となる。特に、位置決め用の突起と切除部の各傾斜面を高精度で合致させるための加工には相当の技術が必要とされる。このため、部品のコストアップが避けられない。 In the connection structure of Patent Document 1, high connection strength is achieved by forming a state in which the end surfaces of the beam frame and the end surfaces of the connection fittings are in full contact and pressed against each other. However, in order to bring the end faces of the beam frame and the end faces of the connecting fittings into contact with each other over the entire surface, the shapes of both end faces must match with sufficient accuracy, and high processing accuracy is required. In particular, considerable skill is required for processing for matching the positioning projections and the inclined surfaces of the cut-off portion with a high degree of accuracy. For this reason, an increase in the cost of parts is unavoidable.

本発明は、上記の事情に鑑みてなされたものであり、高い加工精度を必要としなくとも、高い連結強度を実現することができる、フレームの連結構造の提供を目的としている。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a frame connection structure that achieves high connection strength without requiring high processing accuracy.

本発明は、かかる目的を達成するために、次のような手段を講じたものである。 In order to achieve this object, the present invention takes the following means.

すなわち、本発明は、
複数の部材が連結されてなるフレームにおける部材間の連結構造であって、
第１端面を備える第１部材と、
前記第１端面と対向配置される第２端面を備える第２部材と、
前記第１端面と前記第２端面が対向配置された状態において、両端面の間に介在して配置される３個以上の突部と、
前記第１端面と前記第２端面が、前記３個以上の突部を介して突き当たった状態で、前記第１部材と前記第２部材を締結する締結部材と、
を備え、
前記第２部材が、
端面が開口した筒状の第２本体部と、
前記端面の前記開口に嵌め込まれる内カバー部と、
を備え、
前記内カバー部に、前記第２本体部の前記端面に係止される係止用突起部が形成され、該係止用突起部が、前記突部を構成する。
That is, the present invention
A connection structure between members in a frame formed by connecting a plurality of members,
a first member having a first end surface;
a second member having a second end surface facing the first end surface;
three or more protrusions interposed between the two end surfaces in a state in which the first end surface and the second end surface are arranged to face each other;
a fastening member that fastens the first member and the second member in a state where the first end surface and the second end surface collide with each other via the three or more protrusions;
with
The second member is
a cylindrical second main body with an open end face;
an inner cover portion fitted into the opening of the end face;
with
The inner cover portion is formed with a locking protrusion that is locked to the end face of the second main body, and the locking protrusion constitutes the protrusion.

この構成によると、第１部材と第２部材の各端面が全面的に接触するのではなく、両端面が３個以上の突部を介して突き当たった状態で、両部材が締結される。したがって、両端面の形状が全面的に合致している必要がなく、高い加工精度が不要となる。その一方で、両端面が、３個以上の突部を介して互いに押圧しあう状態が形成されるので、高い連結強度も実現される。
また、第２部材の本体部（第２本体部）の端面を複雑な形状に加工する必要がない。例えば、第２部材が長尺の大型部材である場合、第２本体部の端面を加工するためには大型の加工装置が必要となり運搬等にも人手を要するが、ここでは、加工が必要な部分が、第２本体部とは別の内カバー部とされているので、大型の加工装置が不要であり、加工に要する労力も軽減される。
According to this configuration, the end surfaces of the first member and the second member are not entirely in contact with each other, but the two members are fastened in a state in which the end surfaces abut through three or more protrusions. Therefore, it is not necessary for the shapes of both end faces to completely match, and high processing accuracy is not required. On the other hand, since the two end surfaces press each other through three or more protrusions, a high connection strength is realized.
Moreover, it is not necessary to process the end surface of the body portion (second body portion) of the second member into a complicated shape. For example, when the second member is a long and large member, a large processing device is required to process the end face of the second main body, and manpower is required for transportation and the like. Since the portion is an inner cover portion separate from the second main body portion, a large-sized processing device is not required, and the labor required for processing is reduced.

好ましくは、前記フレームの連結構造は、
前記第１端面と前記第２端面が、形状および大きさが略同一であり、
両端面が全面的に重なるような位置関係で対向配置される。 Preferably, the connection structure of the frame includes:
the first end face and the second end face are substantially the same in shape and size;
They are arranged opposite to each other in a positional relationship such that both end surfaces completely overlap each other.

この構成によると、第１部材と第２部材との連結部分において、断面形状が変化しないので、連結部分の美観を高めることができる。 According to this configuration, since the cross-sectional shape does not change at the connecting portion between the first member and the second member, the appearance of the connecting portion can be improved.

好ましくは、前記フレームの連結構造は、
前記第１端面と前記第２端面が、形状および大きさのうちの少なくとも一方が異なり、
両端面が部分的に重なるような位置関係で対向配置され、
前記突部が、両端面が対向配置された状態において両端面が重なる領域に相当する位置に配置される。 Preferably, the connection structure of the frame includes:
the first end surface and the second end surface are different in at least one of shape and size;
They are arranged facing each other in a positional relationship such that both end faces partially overlap,
The protrusion is arranged at a position corresponding to a region where the both end faces overlap each other when the both end faces are arranged to face each other.

この構成によると、断面の形状、大きさ、あるいは、これらの両方が異なる第１部材と第２部材とを、十分な強度で連結することができる。 According to this configuration, the first member and the second member, which differ in cross-sectional shape, size, or both, can be connected with sufficient strength.

好ましくは、前記フレームの連結構造は、
前記第２端面が、矩形枠状であり、
前記突部が、前記第２端面の四隅もしくは四隅近傍の各々に相当する位置に配置される。 Preferably, the connection structure of the frame includes:
the second end face has a rectangular frame shape,
The protrusions are arranged at positions corresponding to the four corners or the vicinity of the four corners of the second end face.

この構成によると、第１部材と第２部材とが締結されたときに、第１端面と第２端面が、４個の突部を介して安定して突き当たって、互いに押圧しあう状態が形成される。したがって、両部材の連結強度を特に高いものとすることができる。 According to this configuration, when the first member and the second member are fastened together, the first end surface and the second end surface stably abut each other via the four protrusions to press each other. be done. Therefore, the strength of connection between the two members can be made particularly high.

好ましくは、前記フレームの連結構造は、
前記第２端面が、円形枠状であり、
前記突部が、前記第２端面の周方向に沿って等間隔な各位置に相当する位置に配置される。 Preferably, the connection structure of the frame includes:
the second end face is in the shape of a circular frame,
The protrusions are arranged at positions corresponding to positions equidistantly along the circumferential direction of the second end surface.

この構成によると、第１部材と第２部材とが締結されたときに、第１端面と第２端面が、３個以上の突部を介して安定して突き当たって、互いに押圧しあう状態が形成される。したがって、両部材の連結強度を特に高いものとすることができる。 According to this configuration, when the first member and the second member are fastened, the first end surface and the second end surface stably abut each other via the three or more protrusions, and press against each other. It is formed. Therefore, the strength of connection between the two members can be made particularly high.

好ましくは、前記フレームの連結構造は、
前記第１部材が、
端面が開口した筒状の第１本体部、
を備え、
前記内カバー部が、
基端部側において前記第２本体部の対向する内面壁に沿って延在し、先端部側において前記第２本体部の外側に延出する、一対の側壁部、
を備え、
前記一対の側壁部における前記第２本体部の外側に延出した部分が、前記第１本体部の内壁面に沿って前記第１本体部に差し込まれることによって、前記第１本体部の端面と、前記第２本体部の端面とが対向配置される。 Preferably, the connection structure of the frame includes:
The first member is
a cylindrical first body portion with an open end face;
with
The inner cover part
a pair of side wall portions extending along opposing inner walls of the second main body on the proximal end side and extending outside the second main body on the distal end side;
with
The portions of the pair of side wall portions that extend outside the second main body portion are inserted into the first main body portion along the inner wall surface of the first main body portion, thereby forming an end face of the first main body portion. , and the end surface of the second body portion are arranged to face each other.

この構成によると、第２部材と第１部材の位置合わせを容易に行うことができるので、両部材の連結にかかる作業負担を軽減することができる。 According to this configuration, it is possible to easily align the second member and the first member, so that it is possible to reduce the workload of connecting the two members.

好ましくは、前記フレームの連結構造は、
前記第１部材が、
前記第１本体部の対向する側壁の間に架け渡された固定架材、
を備え、
前記内カバー部が、
前記一対の側壁部の各基端部の間に設けられた奥壁部、
を備え、
前記締結部材がボルトであり、
前記ボルトが、前記奥壁部に形成された挿通孔を挿通されて、前記固定架材に形成されたボルト孔に螺合される。 Preferably, the connection structure of the frame includes:
The first member is
a fixed bridge bridged between the opposing side walls of the first main body;
with
The inner cover part
a back wall portion provided between the base end portions of the pair of side wall portions;
with
the fastening member is a bolt,
The bolt is inserted through an insertion hole formed in the inner wall portion and screwed into a bolt hole formed in the fixed frame.

この構成によると、内カバーに設けられた奥壁部にボルトを挿通するための挿通孔が形成されるので、連結構造を簡易なものとすることができる。 According to this configuration, since the insertion hole for inserting the bolt is formed in the inner wall provided in the inner cover, the connecting structure can be simplified.

好ましくは、前記フレームの連結構造は、
前記一対の側壁部の各先端部に、前記固定架材の外面に倣う形状の切欠きが形成されており、
前記ボルトが前記ボルト孔に締め込まれるにつれて、前記切欠き内に前記固定架材が収納されるように位置規制されながら前記第１部材と前記第２部材が相寄る方向に導かれ、両部材が前記ボルトによって締結された状態において、前記切欠きに前記固定架材の一部分が収容された状態となる。 Preferably, the connection structure of the frame includes:
A notch having a shape that follows the outer surface of the fixed frame is formed at each tip of the pair of side walls,
As the bolt is tightened into the bolt hole, the first member and the second member are guided in a direction toward each other while being positionally regulated such that the fixed member is accommodated in the notch. is fastened by the bolt, a portion of the fixed bridge member is accommodated in the notch.

この構成によると、第１部材と第２部材を適切な位置関係で難なく締結することができるので、両部材の連結にかかる作業負担を軽減することができる。 According to this configuration, the first member and the second member can be fastened in an appropriate positional relationship without difficulty, so that the workload for connecting the two members can be reduced.

また、本発明は、前記フレーム連結構造を一部に備える天板付家具も対象としている。高い加工精度を必要としなくとも、高い連結強度を実現することができるフレーム連結構造を一部に備えることで、製造コストを抑えつつ、高い強度の天板付家具を得ることができる。 In addition, the present invention also targets furniture with a top plate partially including the frame connection structure. By providing a part of the frame connection structure capable of realizing high connection strength without requiring high processing accuracy, it is possible to obtain high-strength furniture with a top plate while suppressing the manufacturing cost.

本発明に係るフレームの連結構造によると、高い加工精度を必要としなくとも、高い連結強度を実現することができる。 According to the frame connection structure of the present invention, high connection strength can be achieved without requiring high processing accuracy.

本発明の実施形態に係る天板付家具の斜視図。BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the furniture with a top plate which concerns on embodiment of this invention. 天板付家具の分解斜視図。Fig. 2 is an exploded perspective view of furniture with a top plate; フレームの連結構造の斜視図。The perspective view of the connection structure of a frame. 連結構造の分解斜視図。FIG. 2 is an exploded perspective view of the connecting structure; 連結用突出部の分解斜視図。FIG. 4 is an exploded perspective view of a connecting projection; ビーム部の端部部分の分解斜視図。FIG. 4 is an exploded perspective view of the end portion of the beam; 連結構造の側断面図。FIG. 2 is a side cross-sectional view of the connecting structure; 本発明の変形例に係る連結構造の分解斜視図。The exploded perspective view of the connection structure which concerns on the modification of this invention. 本発明の変形例に係るビーム部の端部部分の分解斜視図、および、該端部部分の斜視図。FIG. 10 is an exploded perspective view of an end portion of a beam portion according to a modification of the present invention, and a perspective view of the end portion; 本発明の変形例に係るビーム部の端部部分の分解斜視図、および、該端部部分の斜視図。FIG. 10 is an exploded perspective view of an end portion of a beam portion according to a modification of the present invention, and a perspective view of the end portion; 本発明の変形例に係るビーム部の端部部分の分解斜視図、および、該端部部分の斜視図。FIG. 10 is an exploded perspective view of an end portion of a beam portion according to a modification of the present invention, and a perspective view of the end portion; 本発明の変形例に係る連結構造の分解斜視図。The exploded perspective view of the connection structure which concerns on the modification of this invention. 本発明の変形例に係る連結構造の分解斜視図。The exploded perspective view of the connection structure which concerns on the modification of this invention.

以下、本発明の実施形態について、図面を参照しつつ説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

＜１．全体構成＞
実施形態に係る天板付家具の全体構成について、図１、図２を参照しながら説明する。図１は、実施形態に係る天板付家具Ａの斜視図である。図２は、天板付家具Ａの分解斜視図である。 <1. Overall configuration>
An overall configuration of furniture with a top plate according to an embodiment will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a perspective view of furniture A with a top plate according to the embodiment. FIG. 2 is an exploded perspective view of the furniture A with a top plate.

天板付家具Ａは、いわゆるフリーアドレスが導入されているオフィス等において好適に用いられる大型テーブルであり、平面視において長方形状の天板ＴＢと、これを支持する支持構造体である一対のフレームＦＲ，ＦＲおよび一対の横フレームＳＦＲ，ＳＦＲと、を備える。 The furniture A with a top plate is a large table suitable for use in an office or the like where a so-called free address system is introduced. , FR and a pair of lateral frames SFR, SFR.

一対のフレームＦＲ，ＦＲの各々は、複数の部材、すなわちこの実施形態では２個の脚本体部１、２個の連結用突出部２、および、１個のビーム部３が連結されてなる枠状の部材であり、全体として門型状を呈している。脚本体部１は、棒状の部材であり、下端にアジャスタ部材１１が設けられ、上端に連結用突出部２が設けられる。連結用突出部２は、短尺棒状の部材であり、脚本体部１の延在方向と交差する方向、具体的に本実施形態では、１個のフレームＦＲが備える一対の脚本体部１，１における互いに対向する内側面の法線方向に突出するような姿勢で、脚本体部１の内側面に固定される。ここでは、脚本体部１および連結用突出部２が１個の脚ユニットＬＵを構成する。フレームＦＲは、２個の脚ユニットＬＵの上端に、長尺棒状の部材であるビーム部３が架け渡された構造となっている。すなわち、ビーム部３の一端は、一方の脚ユニットＬＵの連結用突出部２の突出側の端部と連結され、ビーム部３の他端は、他方の脚ユニットＬＵの連結用突出部２の突出側の端部と連結される。 Each of the pair of frames FR, FR is a frame formed by connecting a plurality of members, that is, two legs 1, two connecting protrusions 2, and one beam 3 in this embodiment. It is a shaped member and has a portal shape as a whole. The leg body portion 1 is a bar-shaped member, and has an adjuster member 11 at its lower end and a connecting projection portion 2 at its upper end. The connecting protrusion 2 is a short rod-shaped member, and extends in a direction intersecting the extending direction of the script body 1, specifically, in this embodiment, the pair of script body parts 1, 1 provided in one frame FR. It is fixed to the inner surface of the leg body portion 1 in such a posture as to protrude in the normal direction of the inner surfaces facing each other. Here, the leg body portion 1 and the connecting projecting portion 2 constitute one leg unit LU. The frame FR has a structure in which a beam portion 3, which is a long rod-shaped member, spans over the upper ends of two leg units LU. That is, one end of the beam portion 3 is connected to the protruding end of the connecting protrusion 2 of one leg unit LU, and the other end of the beam portion 3 is connected to the connecting protrusion 2 of the other leg unit LU. It is connected with the end on the projecting side.

また、一対のフレームＦＲ，ＦＲは、一対の横フレームＳＦＲ，ＳＦＲを介して連結された構造となっている。すなわち、横フレームＳＦＲ，ＳＦＲは、長尺棒状の部材であり、一方の端面が、一方のフレームＦＲの脚ユニットＬＵの連結用突出部２の側方面と連結され、他方の端面が、他方のフレームＦＲの脚ユニットＬＵの連結用突出部２の側方面と連結される。 Also, the pair of frames FR, FR has a structure in which they are connected via a pair of lateral frames SFR, SFR. That is, the lateral frames SFR, SFR are long rod-shaped members, one end surface of which is connected to the side surface of the connecting protrusion 2 of the leg unit LU of one frame FR, and the other end surface of which is connected to the other end surface. It is connected to the side surfaces of the connecting protrusions 2 of the leg units LU of the frame FR.

このように、ここでは、各々が、一対の脚ユニットＬＵ，ＬＵの上端にビーム部３が架け渡された構成を備える一対のフレームＦＲ，ＦＲが、一対の横フレームＳＦＲ，ＳＦＲによって連結された構成となっており、これが天板付家具Ａの支持構造体を構成する。実際は、一方のフレームＦＲの脚ユニットＬＵと他方のフレームＦＲの脚ユニットＬＵを横フレームＳＦＲで連結してから、各フレームＦＲの一対の脚ユニットＬＵ間をビーム部３で連結する。なお、本実施形態では、上記の棒状の部材は、角パイプによって実現されている。 Thus, here, a pair of frames FR, FR each having a configuration in which the beam portion 3 is bridged over the upper ends of a pair of leg units LU, LU are connected by a pair of lateral frames SFR, SFR. This constitutes the support structure of the furniture A with a top plate. In practice, after the leg unit LU of one frame FR and the leg unit LU of the other frame FR are connected by the horizontal frame SFR, the pair of leg units LU of each frame FR are connected by the beam portion 3 . In addition, in this embodiment, the rod-shaped member is realized by a square pipe.

一対のフレームＦＲ，ＦＲおよび一対の横フレームＳＦＲ，ＳＦＲからなる支持構造体は、ビーム部３および横フレームＳＦＲを介して天板ＴＢの裏面に固定される。すなわち、各ビーム部３は、天板ＴＢの長辺よりも僅かに短い寸法とされており、天板ＴＢの裏面における各長辺の近傍位置に、該長辺と略平行に延在するような姿勢で配置される。また、各横フレームＳＦＲは、天板ＴＢの短辺よりも僅かに短い寸法とされており、天板ＴＢの裏面における各短辺の近傍位置に、該短辺と略平行に延在するような姿勢で配置される。そして、ビーム部３および横フレームＳＦＲは、各々に形成された複数のボルト挿通孔３ａに挿通されたボルト（図示省略）によって天板ＴＢの裏面に対して固定される。一対のフレームＦＲ，ＦＲおよび一対の横フレームＳＦＲ，ＳＦＲが天板ＴＢに固定されることによって、天板ＴＢが一対のフレームＦＲ，ＦＲおよび一対の横フレームＳＦＲ，ＳＦＲ上に水平姿勢で支持される。 A support structure consisting of a pair of frames FR, FR and a pair of horizontal frames SFR, SFR is fixed to the back surface of the top plate TB via the beam portion 3 and the horizontal frames SFR. That is, each beam portion 3 has a dimension slightly shorter than the long side of the top plate TB, and extends substantially parallel to the long side at a position near each long side on the back surface of the top plate TB. placed in the correct position. Each horizontal frame SFR has a dimension slightly shorter than the short side of the top plate TB, and extends substantially parallel to the short side at a position near each short side on the back surface of the top plate TB. placed in the correct position. The beam portion 3 and the horizontal frame SFR are fixed to the back surface of the top plate TB by bolts (not shown) inserted through a plurality of bolt insertion holes 3a formed in each. By fixing the pair of frames FR and FR and the pair of horizontal frames SFR and SFR to the top plate TB, the top plate TB is horizontally supported on the pair of frames FR and FR and the pair of horizontal frames SFR and SFR. be.

＜２．連結構造に係る各部の構成＞
次に、フレームＦＲにおいて、連結用突出部２とビーム部３との間に形成される連結構造について、図３、図４を参照しながら説明する。図３は、連結用突出部２とビーム部３の連結部分を拡大して示した斜視図である。図４は、該連結部分を分解して示した斜視図である。 <2. Configuration of Each Part Related to Connection Structure>
Next, in the frame FR, a connecting structure formed between the connecting protrusion 2 and the beam portion 3 will be described with reference to FIGS. 3 and 4. FIG. FIG. 3 is a perspective view showing an enlarged connection portion between the connection protrusion 2 and the beam portion 3. As shown in FIG. FIG. 4 is an exploded perspective view of the connecting portion.

連結用突出部２とビーム部３の間に形成される連結構造においては、連結用突出部２の端面（第１端面）２０と、ビーム部３の端面（第２端面）３０とが対向配置された状態となっている。ただし、ここでは、両端面２０，３０が対向配置された状態において、両端面２０，３０の間に４個の突部Ｄが介在して配置されており、両端面２０，３０は、全面的に接触するのではなく、該４個の突部Ｄを介して突き当たった状態となる。そして、このような状態で、連結用突出部２とビーム部３とが、締結部材であるボルト４（図７参照）によって締結される。このような連結構造に係る各部２，３の構成について、以下具体的に説明する。 In the connecting structure formed between the connecting projection 2 and the beam 3, the end face (first end face) 20 of the connecting projection 2 and the end face (second end face) 30 of the beam 3 are arranged to face each other. It is in a state of However, here, in a state in which both end faces 20 and 30 are arranged to face each other, four protrusions D are interposed between both end faces 20 and 30, and both end faces 20 and 30 are entirely Instead of coming into contact with the four protrusions D, they are in a state of abutting against each other. In this state, the connecting projection 2 and the beam portion 3 are fastened together by bolts 4 (see FIG. 7), which are fastening members. The configuration of each part 2, 3 related to such a connecting structure will be specifically described below.

＜連結用突出部２＞
連結用突出部２の構成について、図３、図４に加え、図５を参照しながら説明する。図５は、連結用突出部２の分解斜視図である。 <Connecting protrusion 2>
The configuration of the connecting protrusion 2 will be described with reference to FIGS. 3 and 4 as well as FIG. FIG. 5 is an exploded perspective view of the connecting protrusion 2. FIG.

連結用突出部２は、本体部２１と、固定架材２２と、を備える。 The connecting projecting portion 2 includes a body portion 21 and a fixed bridge member 22 .

本体部２１は、短尺角筒状の部材であり、その両端面は矩形枠状を呈している。本体部２１における一方の端面は、脚本体部１の側面に固定される。また、他方の端面は、連結用突出部２の端面（第１端面）２０を構成し、ビーム部３の端面（第２端面）３０と対向配置される。本体部２１の対向する一対の側壁２１１，２１１には、対向する一対の貫通孔２１２，２１２が形成される。 The body portion 21 is a member in the shape of a short rectangular tube, and both end surfaces thereof are in the shape of a rectangular frame. One end surface of the body portion 21 is fixed to the side surface of the script body portion 1 . The other end face constitutes the end face (first end face) 20 of the connecting protrusion 2 and is arranged to face the end face (second end face) 30 of the beam portion 3 . A pair of opposing through holes 212 , 212 are formed in a pair of opposing side walls 211 , 211 of the body portion 21 .

固定架材２２は、中実の棒状部材であり、本体部２１の一対の側壁２１１の間に架け渡されて設けられる。すなわち、固定架材２２は、各側壁２１１に形成された貫通孔２１２を順に挿通されて、Ｅリング等の固定具２２１によって抜け落ちないように固定される。各貫通孔２１２、および、固定架材２２の断面は、いずれも、円形の一部が直線的にカットされた略Ｄ字状であり、これによって、固定架材２２が、所定の回転姿勢に規制され、軸まわりで回転しないようになっている。固定架材２２の延在途中には、ボルト４が螺合されるボルト孔２２２が形成されている。このボルト孔２２２は、固定架材２２が所定の回転姿勢に規制されたときに、端面２０から遠ざかるにつれて上方に傾斜するような姿勢に配置される（図７参照）。 The fixed bridge member 22 is a solid rod-shaped member, and is provided so as to bridge between the pair of side walls 211 of the body portion 21 . That is, the fixed bridge members 22 are sequentially inserted through the through holes 212 formed in the respective side walls 211 and are fixed by the fixtures 221 such as E-rings so as not to fall off. Each through-hole 212 and the cross-section of the fixed bridge member 22 are substantially D-shaped by cutting a part of a circular shape into a straight line. It is restrained and prevented from rotating around its axis. A bolt hole 222 into which the bolt 4 is screwed is formed in the middle of the extension of the fixed bridge member 22 . This bolt hole 222 is arranged in such a posture that it inclines upward with increasing distance from the end surface 20 when the fixed bridge member 22 is regulated in a predetermined rotational posture (see FIG. 7).

＜ビーム部３＞
ビーム部３の構成について、図３、図４に加え、図６を参照しながら説明する。図６は、ビーム部３の端部部分の分解斜視図である。 <Beam part 3>
The configuration of the beam portion 3 will be described with reference to FIGS. 3 and 4 as well as FIG. 6 is an exploded perspective view of the end portion of the beam portion 3. FIG.

ビーム部３は、本体部３１と、内カバー部３２と、を備える。 The beam portion 3 includes a body portion 31 and an inner cover portion 32 .

本体部３１は、長尺角筒状の部材であり、その両端面は矩形枠状を呈している。本体部３１の各端面は、ビーム部３の端面（第２端面）３０を構成し、連結用突出部２の端面２０と対向配置される。ビーム部３の端面、すなわち、本体部３１の端面３０と、連結用突出部２の端面、すなわち、本体部２１の端面２０は、形状および大きさが略同一（同一を含む）であり、両端面２０，３０は全面的に重なるような位置関係で対向配置される。本体部３１の底板部３１１には、ボルト４の締結作業を行うための窓部３１２が形成される。 The body portion 31 is a member in the shape of a long rectangular tube, and both end surfaces thereof are in the shape of a rectangular frame. Each end face of the main body portion 31 constitutes an end face (second end face) 30 of the beam portion 3 and is arranged to face the end face 20 of the connecting protrusion 2 . The end face of the beam portion 3, that is, the end face 30 of the main body portion 31, and the end face of the connecting projection portion 2, that is, the end face 20 of the main body portion 21 are substantially the same (including the same) in shape and size. The surfaces 20 and 30 are arranged to face each other in a positional relationship such that they completely overlap. A bottom plate portion 311 of the body portion 31 is formed with a window portion 312 for fastening the bolt 4 .

内カバー部３２は、一対の側壁部３２１，３２１と各側壁部３２１の基端部の間に設けられた奥壁部３２２とが一体に連なった略Ｕ字状の部材であり、奥壁部３２２の側から、本体部３１の端面３０の開口に嵌め込まれて、溶接等によって本体部３１に対して固着される。この実施形態の内カバー部３２は、全体が板金を塑性変形加工したものである。 The inner cover portion 32 is a substantially U-shaped member in which a pair of side wall portions 321, 321 and a back wall portion 322 provided between the base ends of the side wall portions 321 are integrally connected. It is fitted into the opening of the end face 30 of the body portion 31 from the 322 side and fixed to the body portion 31 by welding or the like. The entire inner cover portion 32 of this embodiment is formed by plastically deforming sheet metal.

各側壁部３２１は、平板状の部材であり、略平行四辺形状を呈している。すなわち、各側壁部３２１は、上端辺および下端辺が互いに平行に延在し、基端側（奥壁部３２２に連なる側）の辺が、上端辺と鋭角をなすとともに下端辺と鈍角をなしつつ、傾斜して延在する（図７参照）。 Each side wall portion 321 is a plate-like member and has a substantially parallelogram shape. That is, each side wall portion 321 has an upper end side and a lower end side extending parallel to each other, and a base end side (a side connected to the inner wall portion 322) forms an acute angle with the upper end side and an obtuse angle with the lower end side. while extending at an angle (see FIG. 7).

各側壁部３２１の上端面および下端面の各々には、直方体状の突起部（係止用突起部）３２３が形成されている。内カバー部３２が本体部３１の端面３０の開口に嵌め込まれていくと、ある嵌め込み深さにおいて、係止用突起部３２３が該端面３０に係止され、内カバー部３２がそれ以上奥に入り込めないようになっている。内カバー部３２は、係止用突起部３２３が本体部３１の端面３０に係止されるような深さまで嵌め込まれた状態で、溶接等によって本体部３１に対して固着される。したがって、内カバー部３２が固着された状態において、本体部３１の端面３０における互いに異なる位置（具体的には、端面３０の四隅もしくは四隅近傍）に、４個の係止用突起部３２３が配置されることとなる。この係止用突起部３２３が、上述した突部Ｄを構成する。 A rectangular parallelepiped protrusion (locking protrusion) 323 is formed on each of the upper end surface and the lower end surface of each side wall portion 321 . As the inner cover portion 32 is fitted into the opening of the end face 30 of the main body portion 31, the locking protrusion 323 is locked to the end face 30 at a certain fitting depth, and the inner cover portion 32 is further pushed back. You can't enter. The inner cover portion 32 is fixed to the main body portion 31 by welding or the like in a state in which the locking protrusions 323 are fitted to the end surface 30 of the main body portion 31 to such a depth. Therefore, in the state where the inner cover portion 32 is fixed, the four locking protrusions 323 are arranged at mutually different positions (specifically, at the four corners or near the four corners of the end face 30) on the end face 30 of the body portion 31. It will be done. The locking protrusion 323 constitutes the protrusion D described above.

係止用突起部３２３は、平板状である側壁部３２１の延在途中に形成される。したがって、内カバー部３２が本体部３１に固着された状態において、側壁部３２１における係止用突起部３２３よりも基端側の部分（内延部分）３２１１が、本体部３１の内部に収容されて、本体部３１の側壁３１３の内面と近接あるいは当接しつつ、これと平行に延在する。また、その先に延在する先端側の部分（外延部分）３２１２が、本体部３１の側壁３１３と平行な姿勢のまま、本体部３１の外側に延出する。外延部分３２１２の先端縁には、固定架材２２の外面に倣う円弧状の切欠き３２４が形成される。 The locking protrusion 323 is formed in the middle of the extension of the side wall portion 321 having a flat plate shape. Therefore, when the inner cover portion 32 is fixed to the main body portion 31 , a portion (inwardly extending portion) 3211 of the side wall portion 321 closer to the proximal side than the locking projection portion 323 is housed inside the main body portion 31 . , and extends parallel to the inner surface of the side wall 313 of the main body 31 while being close to or in contact with the inner surface. Further, a tip-side portion (extending portion) 3212 that extends further extends to the outside of the body portion 31 while maintaining a posture parallel to the side wall 313 of the body portion 31 . An arc-shaped notch 324 that follows the outer surface of the fixed bridge member 22 is formed at the leading edge of the extension portion 3212 .

奥壁部３２２は、３枚の略長方形状の平板部分３２２２，３２２１，３２２２が連なることにより形成されており、真ん中に配置された平板部分３２２１の各側縁が、該平板部分３２２１と角度を設けつつ配置された別の平板部分３２２２の側縁と連なることにより、全体として略Ｕ字状を呈している。真ん中に配置された平板部分３２２１には、ボルト４を挿通させるためのボルト挿通孔３２５が形成される。 The inner wall portion 322 is formed by connecting three substantially rectangular flat plate portions 3222 , 3221 , 3222 , and each side edge of the flat plate portion 3221 arranged in the middle forms an angle with the flat plate portion 3221 . By continuing with the side edge of another flat plate portion 3222 that is provided and arranged, the overall shape is substantially U-shaped. A bolt insertion hole 325 for inserting the bolt 4 is formed in the flat plate portion 3221 arranged in the center.

上記の通り、各側壁部３２１の基端側の辺は、上端辺と鋭角をなすとともに下端辺と鈍角をなしつつ傾斜して延在しており、奥壁部３２２は、この傾斜して延在する辺に連設される。したがって、内カバー部３２が本体部３１に固着された状態において、奥壁部３２２における真ん中に配置された平板部分３２２１は、上端に向かうにつれて、本体部３１の端面３０から離れるような傾斜姿勢で配置されることになる（図７参照）。 As described above, the base end side of each side wall portion 321 extends at an acute angle with the upper end side and at an obtuse angle with the lower end side. It is connected to the existing edge. Therefore, in the state where the inner cover portion 32 is fixed to the main body portion 31, the flat plate portion 3221 arranged in the center of the inner wall portion 322 is in a tilted posture so as to move away from the end face 30 of the main body portion 31 toward the upper end. will be placed (see FIG. 7).

＜３．連結構造を形成する態様＞
次に、連結用突出部２とビーム部３との間に連結構造を形成する態様について、図３、図４に加え、図７を参照しながら説明する。図７は、連結用突出部２とビーム部３の連結部分の側断面図である。 <3. Aspect of Forming Linked Structure>
Next, a mode of forming a connecting structure between the connecting protrusion 2 and the beam portion 3 will be described with reference to FIGS. 3 and 4 as well as FIG. FIG. 7 is a side cross-sectional view of the connecting portion between the connecting protrusion 2 and the beam portion 3. As shown in FIG.

連結用突出部２とビーム部３を連結するにあたって、作業者は、まず、ビーム部３の本体部３１の端面３０から延出する外延部分３２１２を、連結用突出部２の本体部２１の端面２０の開口に差し込んでいく。上記の通り、外延部分３２１２は、ビーム部３の本体部３１の側壁３１３と平行な姿勢で本体部３１の外側に延出する。また、両本体部３１，２１の端面は形状および大きさが略同一である。したがって、外延部分３２１２が、本体部２１の側壁２１１の内面に沿って本体部２１に差し込まれることによって、両端面２０，３０が、差込方向から見て全面的に互いに重なるような位置関係で、互いに平行な姿勢を保ちつつ、近づいていく。作業者は、一方の端面３０に配置されている各突部Ｄが、他方の端面２０に突き当たった状態となるまで、両端面３０，２０を近づける。全ての突部Ｄが端面２０に突き当たることにより、両端面２０，３０が、４個の突部Ｄを介して突き当たった状態となる（図７（ａ））。 When connecting the connecting projection 2 and the beam portion 3 , the operator first places the extension portion 3212 extending from the end surface 30 of the main body portion 31 of the beam portion 3 against the end surface of the main body portion 21 of the connecting projection portion 2 . Insert it into the opening of 20. As described above, the extension portion 3212 extends outside the body portion 31 in a posture parallel to the side wall 313 of the body portion 31 of the beam portion 3 . Further, the end surfaces of both body portions 31 and 21 are substantially the same in shape and size. Therefore, by inserting the extension portion 3212 into the body portion 21 along the inner surface of the side wall 211 of the body portion 21, both end faces 20 and 30 are in a positional relationship such that they completely overlap each other when viewed from the insertion direction. , approaching each other while maintaining parallel postures. The operator brings the two end faces 30 and 20 closer together until each projection D arranged on one end face 30 hits the other end face 20 . When all the protrusions D abut against the end surface 20, both end surfaces 20 and 30 abut against each other through the four protrusions D (FIG. 7(a)).

ここで、固定架材２２に設けられたボルト孔２２２、内カバー部３２に設けられたボルト挿通孔３２５、および、本体部３１に設けられた窓部３１２は、両端面３０，２０が十分に近接して配置された上記の状態において、ボルト孔２２２の軸線に沿って見て、互いに重なるような位置関係となるように、それぞれの形成位置が調整されている。そこで、次に、作業者は、窓部３１２からボルト４を差し込み、該ボルト４を、ボルト挿通孔３２５に挿通させて、ボルト孔２２２に螺合させつつ締め込んでいく。ボルト４がボルト孔２２２に締め込まれるにつれて、切欠き３２４内に固定架材２２が収納されるように位置規制されながら、連結用突出部２とビーム部３とが相寄る方向に導かれて、両部材２，３が強固に締結される（図７（ｂ））。これによって、連結用突出部２とビーム部３との間に連結構造が形成される。 Here, the bolt hole 222 provided in the fixed frame 22, the bolt insertion hole 325 provided in the inner cover portion 32, and the window portion 312 provided in the main body portion 31 are sufficiently In the above-described state of being arranged close to each other, the formation positions of the bolt holes 222 are adjusted so that they overlap each other when viewed along the axis of the bolt hole 222 . Therefore, next, the operator inserts the bolt 4 from the window portion 312 , inserts the bolt 4 through the bolt insertion hole 325 , and screws it into the bolt hole 222 while tightening it. As the bolt 4 is tightened into the bolt hole 222, the connecting protrusion 2 and the beam portion 3 are guided in a direction toward each other while the position of the fixed bridge member 22 is restricted so that it is accommodated in the notch 324. , both members 2 and 3 are firmly fastened (FIG. 7(b)). Thereby, a connecting structure is formed between the connecting protrusion 2 and the beam portion 3 .

＜４．効果＞
上記の実施形態に係る連結構造においては、連結用突出部２の端面（第１端面）２０とビーム部３の端面（第２端面）３０が、全面的に接触するのではなく、両端面２０，３０が３個の突部Ｄを介して突き当たった状態で、両部材２，３が締結される。したがって、両端面２０，３０の形状が全面的に合致している必要がなく、高い加工精度が不要となる。その一方で、この連結構造においては、両端面２０，３０が、３個以上の突部Ｄを介して互いに押圧しあう状態が形成されるので、高い連結強度も実現される。 <4. Effect>
In the connection structure according to the above-described embodiment, the end face (first end face) 20 of the connecting protrusion 2 and the end face (second end face) 30 of the beam portion 3 are not entirely in contact with each other. , 30 abut against each other through the three projections D, both members 2 and 3 are fastened. Therefore, it is not necessary that the shapes of both end surfaces 20 and 30 completely match each other, and high processing accuracy is not required. On the other hand, in this connecting structure, the two end surfaces 20 and 30 are pressed against each other via three or more projections D, so high connecting strength is achieved.

また、上記の実施形態に係る連結構造においては、連結用突出部２の端面２０とビーム部３の端面３０が、形状および大きさが略同一であり、両端面２０，３０が全面的に重なるような位置関係で対向配置されるので、連結用突出部２とビーム部３との連結部分において、断面形状が変化しない。したがって、連結部分の美観を高めることができる。 In addition, in the connection structure according to the above-described embodiment, the end surface 20 of the connecting protrusion 2 and the end surface 30 of the beam portion 3 have substantially the same shape and size, and the end surfaces 20 and 30 completely overlap. Since they are arranged facing each other with such a positional relationship, the cross-sectional shape does not change at the connecting portion between the connecting projecting portion 2 and the beam portion 3 . Therefore, it is possible to enhance the appearance of the connecting portion.

また、上記の実施形態に係る連結構造では、ビーム部３の端面３０が矩形枠状であり、突部Ｄが、該端面３０の四隅もしくは四隅近傍の各々に配置される。この構成によると、連結用突出部２とビーム部３が締結されたときに、両端面２０，３０が、該４個の突部Ｄを介して安定して突き当たって、互いに押圧しあう状態が形成される。したがって、両部材２，３の連結強度を特に高いものとすることができる。 In addition, in the connection structure according to the above-described embodiment, the end surface 30 of the beam portion 3 has a rectangular frame shape, and the protrusions D are arranged at the four corners of the end surface 30 or near the four corners. According to this configuration, when the connecting projection 2 and the beam 3 are fastened together, the end surfaces 20 and 30 stably collide with each other via the four projections D, and press against each other. It is formed. Therefore, the strength of connection between the two members 2 and 3 can be made particularly high.

また、上記の実施形態に係る連結構造では、ビーム部３が、筒状の本体部３１と、その端面３０の開口に嵌め込まれる内カバー部３２とを備える。そして、内カバー部３２に、本体部３１の端面３０に係止される係止用突起部３２３が形成されており、該係止用突起部３２３が、突部Ｄを構成する。この構成によると、本体部３１の端面３０を複雑な形状に加工する必要がない。例えば、ビーム部３が長尺の大型部材である場合、本体部３１の端面を加工するためには大型の加工装置が必要となり運搬等にも人手を要するが、ここでは、加工が必要な部分が、本体部３１とは別の内カバー部３２とされているので、大型の加工装置が不要であり、加工に要する労力も軽減される。 In addition, in the connection structure according to the above embodiment, the beam portion 3 includes the cylindrical body portion 31 and the inner cover portion 32 fitted into the opening of the end surface 30 thereof. A locking protrusion 323 that is locked to the end surface 30 of the main body 31 is formed on the inner cover portion 32 , and the locking protrusion 323 constitutes the protrusion D. As shown in FIG. According to this configuration, it is not necessary to process the end surface 30 of the body portion 31 into a complicated shape. For example, if the beam portion 3 is a long and large member, a large processing device is required to process the end surface of the main body portion 31, and labor is required for transportation. However, since the inner cover portion 32 is separate from the main body portion 31, a large-sized processing device is not required, and the labor required for processing is reduced.

また、上記の実施形態に係る連結構造では、連結用突出部２が、端面２０が開口した筒状の本体部２１を備える。一方、内カバー部３２の各側壁部３２１，３２１における内延部分３２１１が、本体部３１の対向する内面壁に沿って延在し、外延部分３２１２が、本体部３１の外側に延出する。そして、外延部分３２１２が、連結用突出部２の本体部２１の側壁２１１の内面に沿って該本体部２１に差し込まれることによって、連結用突出部２の端面２０と、ビーム部３の端面３０とが対向配置される。この構成によると、連結用突出部２とビーム部３の位置合わせを容易に行うことができるので、両部材２，３の連結にかかる作業負担を軽減することができる。 In addition, in the connection structure according to the above-described embodiment, the connection protrusion 2 includes the cylindrical body portion 21 with the end surface 20 open. On the other hand, the inner extension portions 3211 of the side wall portions 321 , 321 of the inner cover portion 32 extend along the opposing inner surface walls of the main body portion 31 , and the outer extension portions 3212 extend to the outside of the main body portion 31 . By inserting the extending portion 3212 into the main body portion 21 along the inner surface of the side wall 211 of the main body portion 21 of the connecting projection portion 2, the end face 20 of the connecting projection portion 2 and the end face 30 of the beam portion 3 are arranged opposite to each other. According to this configuration, it is possible to easily align the coupling protrusion 2 and the beam portion 3, so that the workload for coupling the two members 2 and 3 can be reduced.

また、上記の実施形態に係る連結構造では、連結用突出部２が、本体部２１の対向する側壁２１１，２１１の間に架け渡される固定架材２２を備える。一方、ビーム部３が内カバー部３２を備え、該内カバー部３２が、一対の側壁部３２１，３２１と、その各基端部の間に設けられた奥壁部３２２とを備える。そして、ボルト４が、奥壁部３２２に形成されたボルト挿通孔３２５を挿通されて、固定架材２２に形成されたボルト孔２２２に螺合される。この構成によると、連結構造を簡易なものとすることができる。 In addition, in the connection structure according to the above-described embodiment, the connection protrusion 2 includes the fixed bridge member 22 that spans between the opposing side walls 211 , 211 of the main body 21 . On the other hand, the beam portion 3 has an inner cover portion 32, and the inner cover portion 32 has a pair of side wall portions 321, 321 and an inner wall portion 322 provided between the base ends thereof. Then, the bolt 4 is inserted through the bolt insertion hole 325 formed in the inner wall portion 322 and screwed into the bolt hole 222 formed in the fixed frame 22 . According to this configuration, the connecting structure can be simplified.

また、上記の実施形態に係る連結構造では、内カバー部３２の各側壁部３２１の先端部に、固定架材２２の外面に倣う形状の切欠き３２４が形成されており、ボルト４がボルト孔２２２に締め込まれるにつれて、切欠き３２４内に固定架材２２が収納されるように位置規制されながら連結用突出部２とビーム部３が相寄る方向に導かれる。そして、両部材２，３がボルト４によって締結された状態において、切欠き３２４に固定架材２２の一部分が収容された状態となる。この構成によると、連結用突出部２とビーム部３を適切な位置関係で難なく締結することができるので、両部材２，３の連結にかかる作業負担を軽減することができる。 In addition, in the connection structure according to the above-described embodiment, a notch 324 having a shape following the outer surface of the fixed bridge member 22 is formed at the tip of each side wall portion 321 of the inner cover portion 32, and the bolt 4 is inserted into the bolt hole. As it is tightened to 222 , the connecting protrusion 2 and the beam section 3 are guided in the direction toward each other while being positionally regulated such that the fixed bridge member 22 is housed in the notch 324 . A portion of the fixed bridge member 22 is accommodated in the notch 324 when the two members 2 and 3 are fastened with the bolts 4 . According to this configuration, the connecting projection 2 and the beam 3 can be fastened in an appropriate positional relationship without difficulty, so that the work load for connecting the two members 2 and 3 can be reduced.

＜５．他の実施形態＞
上記の実施形態に係る連結構造では、突部Ｄが、ビーム部３の端面３０に４個配置されるものとしたが、突部Ｄの個数は４個に限るものではなく、３個あるいは５個以上であってもよい。また、各突部Ｄが配設される位置は、矩形枠状の端面３０の四隅もしくは四隅近傍の各々に限るものではなく、例えば、矩形枠状の端面３０の各辺部分の中央に配設されてもよい。 <5. Other Embodiments>
In the connection structure according to the above embodiment, four projections D are arranged on the end surface 30 of the beam portion 3, but the number of projections D is not limited to four, and may be three or five. It may be one or more. Further, the positions at which the projections D are arranged are not limited to the four corners or the vicinity of the four corners of the rectangular frame-shaped end surface 30, but are arranged, for example, in the center of each side portion of the rectangular frame-shaped end surface 30. may be

また、上記の実施形態に係る連結構造では、複数の突部Ｄの全てが、ビーム部３の端面３０に配置されるものとしたが、該複数の突部Ｄが、ビーム部３の端面３０ではなく連結用突出部２の端面２０に配置されてもよい。あるいは、複数の突部Ｄが、両端面２０，３０に分配して配置されてもよい。すなわち、複数の突部Ｄのうちの一部がビーム部３の端面３０に配置され、残りが連結用突出部２の端面２０に配置されてもよい。この場合、各端面２０，３０に形成される各突部Ｄは、両端面２０，３０が対向配置されたときに、他の突部Ｄと重ならないような位置関係で配置される。特に好ましくは、例えば端面３０が矩形枠状である場合、両端面２０，３０が対向配置されたときに、端面３０の四隅もしくは四隅近傍の各々に相当する位置に各突部Ｄが介在するように、各突部Ｄが配置されることが好ましい。突部Ｄの一部あるいは全部が、連結用突出部２の端面２０に配置される場合、連結用突出部２を、本体部２１に、上述した内カバー部３２と同様の部材が嵌め込まれて固着された構成としてもよい。 In addition, in the connection structure according to the above embodiment, all of the plurality of projections D are arranged on the end surface 30 of the beam portion 3 , but the plurality of projections D are located on the end surface 30 of the beam portion 3 . Instead, it may be arranged on the end face 20 of the connecting protrusion 2 . Alternatively, a plurality of protrusions D may be distributed and arranged on both end surfaces 20 and 30 . That is, some of the projections D may be arranged on the end surface 30 of the beam portion 3 and the rest may be arranged on the end surface 20 of the connecting projection 2 . In this case, each projection D formed on each end surface 20, 30 is arranged in a positional relationship such that it does not overlap with another projection D when both end surfaces 20, 30 are arranged to face each other. Particularly preferably, when the end face 30 is in the shape of a rectangular frame, for example, when the end faces 20, 30 are arranged to face each other, the projections D are interposed at positions corresponding to the four corners of the end face 30 or the vicinity of the four corners. It is preferable that each protrusion D is arranged in the . When part or all of the protrusion D is arranged on the end face 20 of the connection protrusion 2, the connection protrusion 2 is fitted into the body portion 21 by a member similar to the inner cover portion 32 described above. It may be a fixed configuration.

さらにまた、各突部Ｄを、ビーム部３および連結用突出部２とは別体の独立したスペーサ部材として構成し、該スペーサ部材を、ビーム部３の端面３０と連結用突出部２の端面２０の間に挟み込みつつ、両端面２０，３０を対向配置することで、両端面２０，３０の間に３個以上の突部Ｄを介在させてもよい。 Furthermore, each projection D is configured as an independent spacer member separate from the beam portion 3 and the connecting projection portion 2, and the spacer member is formed between the end surface 30 of the beam portion 3 and the end surface of the connecting projection portion 2. Three or more protrusions D may be interposed between the end faces 20 and 30 by arranging the end faces 20 and 30 so as to face each other while being sandwiched between the end faces 20 .

また、上記の実施形態では、本体部２１，３１が角筒状部材であるとし、その端面２０，３０が矩形枠状を呈していたが、端面２０，３０は必ずしも矩形枠状でなくともよく、三角形枠状、５角形以上の多角形枠状、円形枠状、等であってもよい。また、本体部２１，３１は必ずしも筒状部材でなくともよく、中実部材であってもよい。端面３０が多角形枠状（あるいは、多角形状）の場合、両端面２０，３０が対向配置されたときに、端面３０の各頂点の付近に相当する位置に各突部Ｄが介在するように、各突部Ｄが配置されることも好ましい。また、端面３０が円形枠状（あるいは、円形状）の場合、両端面２０，３０が対向配置されたときに、端面３０の周方向に沿って等間隔な各位置に相当する位置に各突部Ｄが介在するように、各突部Ｄが配置されることも好ましい（図１３参照）。 In the above-described embodiment, the main bodies 21 and 31 are rectangular tubular members, and the end surfaces 20 and 30 thereof have rectangular frame shapes. , a triangular frame shape, a polygonal frame shape with pentagons or more, a circular frame shape, and the like. Also, the body portions 21 and 31 do not necessarily have to be cylindrical members, and may be solid members. When the end face 30 has a polygonal frame shape (or polygonal shape), when both end faces 20 and 30 are arranged to face each other, each protrusion D is positioned near each vertex of the end face 30 so as to intervene. , each protrusion D is preferably arranged. Further, when the end face 30 has a circular frame shape (or a circular shape), when the both end faces 20 and 30 are arranged to face each other, each protrusion is formed at a position corresponding to each equally spaced position along the circumferential direction of the end face 30 . It is also preferable that each protrusion D is arranged so that the portion D intervenes (see FIG. 13).

また、上記の実施形態において、両端面２０，３０は、略平坦面であるとしたが、端面２０，３０の一部あるいは全体に、傾斜した面領域が設けられてもよい。例えば、連結用突出部２の本体部２１が、先端が逆Ｖ字状に切り取られた形状となっており、ビーム部３の本体部３１が、先端がＶ字状に切り取られた形状となっていてもよい。この場合、例えば、両端面２０，３０が対向配置されたときに、本体部３１の端面３０における、Ｖ字状に切り取られた谷の部分に相当する位置に突部Ｄが介在するように、各突部Ｄを配置することも好ましい。 In the above embodiment, both end surfaces 20 and 30 are substantially flat surfaces, but part or all of the end surfaces 20 and 30 may be provided with inclined surface regions. For example, the main body portion 21 of the connecting protrusion 2 has an inverted V-shaped tip, and the main body portion 31 of the beam portion 3 has a V-shaped tip. may be In this case, for example, when the both end faces 20 and 30 are arranged to face each other, the projection D is interposed at a position corresponding to the V-shaped valley portion on the end face 30 of the body portion 31. It is also preferable to arrange each protrusion D.

また、上記の実施形態においては、連結用突出部２の端面２０と、ビーム部３の端面３０が、形状および大きさが略同一であるとしたが、両端面２０，３０は、形状および大きさのうちの少なくとも一方が異なるものであってもよい。例えば、両端面２０，３０のうちの一方が円形枠状であり、他方が矩形枠状であってもよい。また例えば、両端面２０，３０が、いずれも三角枠状であり、大きさが異なる相似形状であってもよい。また例えば、図８に示されるように、連結用突出部２ａの本体部２１ａが、上下の長さがビーム部３ａの本体部３１ａの端面３０ａよりも長尺な矩形枠状の端面２０ａを有する筒状部材であってもよい。両端面２０ａ，３０ａが、形状および大きさのうちの少なくとも一方が異なるものである場合、両端面２０ａ，３０ａは、部分的に重なるような位置関係で対向配置される。また、突部Ｄは、両端面２０ａ，３０ａが対向配置された状態において、端面３０ａにおける、端面２０ａと重なる領域に相当する位置に配置される。例えば図８の例において、ビーム部３ａの端面３０ａと連結用突出部２ａの端面２０ａとが、各々の上側の枠部分が重なるような位置関係で対向配置されるとする。この場合、端面３０ａにおける、端面２０ａと重なる領域は、一対の側方枠部分と上側の枠部分とからなるコ字状の部分である。そこでこの場合、内カバー部３２ａにおける、各側壁部３２１ａの上端面と、各側壁部３２１ａの側面における下端縁の近傍に、直方体状の係止用突起部３２３ａが形成される。このような内カバー部３２ａが本体部３１ａに嵌め込まれて固着されると、本体部３１ａの端面３０ａにおける上記コ字状の部分（すなわち、端面３０ａにおける、端面２０ａと重なる領域）に、４個の係止用突起部３２３ａが配置されることとなり、この係止用突起部３２３ａが、突部Ｄを構成する。このように、本発明を適用すれば、断面の形状、大きさ、あるいは、これらの両方が異なる部材同士を、十分な強度で連結することができる。このような効果は、端面同士の形状および大きさが同一であることを前提とする従来の構成では得られないものである。 Further, in the above embodiment, the end surface 20 of the connecting projection 2 and the end surface 30 of the beam portion 3 are substantially the same in shape and size. at least one of which may be different. For example, one of the end faces 20 and 30 may have a circular frame shape and the other may have a rectangular frame shape. Further, for example, both end faces 20 and 30 may be triangular frame-shaped and may have similar shapes with different sizes. Further, for example, as shown in FIG. 8, the main body portion 21a of the connecting protrusion 2a has a rectangular frame-shaped end face 20a whose vertical length is longer than the end face 30a of the main body portion 31a of the beam portion 3a. It may be a cylindrical member. When both end faces 20a and 30a are different in at least one of shape and size, both end faces 20a and 30a are arranged to face each other in a positional relationship such that they partially overlap. Further, the protrusion D is arranged at a position corresponding to a region of the end face 30a overlapping the end face 20a in a state where the end faces 20a, 30a are arranged to face each other. For example, in the example of FIG. 8, it is assumed that the end surface 30a of the beam portion 3a and the end surface 20a of the connecting protrusion 2a are arranged to face each other in such a positional relationship that their upper frame portions overlap. In this case, the region of the end face 30a that overlaps with the end face 20a is a U-shaped portion composed of a pair of side frame portions and an upper frame portion. In this case, rectangular parallelepiped locking protrusions 323a are formed near the upper end surface of each side wall portion 321a and the lower end edge of the side surface of each side wall portion 321a in the inner cover portion 32a. When such an inner cover portion 32a is fitted into and fixed to the main body portion 31a, the U-shaped portion of the end face 30a of the main body portion 31a (that is, the region of the end face 30a overlapping the end face 20a) has four , and this locking projection 323a constitutes the projection D. As shown in FIG. Thus, by applying the present invention, it is possible to connect members having different cross-sectional shapes, sizes, or both with sufficient strength. Such an effect cannot be obtained with a conventional configuration that assumes that the end faces have the same shape and size.

また、上記の実施形態に係る内カバー部３２の構成は上述したものに限るものではない。例えば、図９に示されるように、内カバー部３２ｂは、これが本体部３１に固着された状態において、本体部３１の外側に延出する部分（上記の実施形態における外延部分３２１２）を備えなくともよい。また例えば、図１０に示されるように、内カバー部３２ｃは、一対の側壁部３２１ｃ，３２１ｃだけを備えるものとし、これを連結する奥壁部３２２を備えなくともよい。また例えば、図１１に示されるように、内カバー部３２ｄは、一対の側壁部３２１，３２１ではなく、一対の屈曲した棒状部材３２１ｄ，３２１ｄを備えるものとしてもよい。この場合、各棒状部材３２１ｄは、これが本体部３１の端面３０の開口に嵌め込まれたときに、該端面３０の対向する一対の枠部分に係止される一対の係止用突起部３２３ｄ，３２３ｄと、該一対の係止用突起部３２３ｄ，３２３ｄを連結する略Ｕ字状の枠状の部分３２４ｄとからなるものとすることができる。なお、図１０、図１１に示される内カバー部３２ｃ，３２ｄのように、奥壁部３２２に相当する部分が設けられない場合、本体部３１の一対の側壁３１３，３１３の間に、ボルト挿通孔３３１が形成された板状部材（あるいは、中実の棒状部材）３３を架設し、ボルト４を、該ボルト挿通孔３３１を挿通して、固定架材２２に形成されたボルト孔２２２に螺合するようにする。板状部材３３は、本体部３１の一対の側壁３１３に形成された対向する一対の貫通孔３１４，３１４を順に挿通されて、固定具（図示省略）等によって抜け落ちないように固定されたものとすればよい。 In addition, the configuration of the inner cover portion 32 according to the above embodiment is not limited to that described above. For example, as shown in FIG. 9, the inner cover portion 32b does not have a portion extending outward from the main body portion 31 (extending portion 3212 in the above embodiment) when it is fixed to the main body portion 31. It's good. Further, for example, as shown in FIG. 10, the inner cover portion 32c may include only a pair of side wall portions 321c, 321c without the back wall portion 322 connecting them. Further, for example, as shown in FIG. 11, the inner cover portion 32d may be provided with a pair of bent rod-shaped members 321d, 321d instead of the pair of side wall portions 321, 321. As shown in FIG. In this case, each rod-shaped member 321d has a pair of locking protrusions 323d, 323d that are locked to a pair of opposing frame portions of the end face 30 when the rod-shaped member 321d is fitted into the opening of the end face 30 of the main body 31. and a substantially U-shaped frame-like portion 324d that connects the pair of locking protrusions 323d, 323d. 10 and 11, if a portion corresponding to the inner wall portion 322 is not provided, bolts are inserted between the pair of side walls 313, 313 of the main body portion 31. A plate-shaped member (or a solid rod-shaped member) 33 having a hole 331 formed therein is installed, and the bolt 4 is inserted through the bolt insertion hole 331 and screwed into the bolt hole 222 formed in the fixed bridge member 22 . match. The plate member 33 is sequentially inserted through a pair of opposing through holes 314, 314 formed in a pair of side walls 313 of the main body 31, and is fixed by a fixture (not shown) or the like so as not to fall off. do it.

また、上記の実施形態においては、ビーム部３が、本体部３１と内カバー部３２とを備えるものとしたが、内カバー部３２を設けなくともよい。内カバー部３２を設けない場合、例えば、図１２に示されるように、ビーム部３ｅの本体部３１ｅの端面３０ｅに加工等を施す、あるいは、端面３０ｅに別部材を接合することにより、該端面３０ｅの例えば四隅もしくは四隅近傍に突起部３０１ｅを直接形成すればよい。ここでは、この突起部３０１ｅが、突部Ｄを構成することになる。内カバー部３２を設けない構成は、図１３に示されるように、ビーム部３ｆの本体部３１ｆの端面３０ｆが円形枠状の場合にも有効である。この場合、該端面３０ｆに加工等を施す、あるいは、端面３０ｆに別部材を接合することにより、該端面３０ｆの周方向に沿って等間隔に、例えば３個の突起部３０１ｆを直接形成すればよい。ここでは、この突起部３０１ｆが、突部Ｄを構成することになる。なお、当然のことながら、内カバー部３２が設けられない場合、本体部３１ｅ，３１ｆの一対の側壁の間に、ボルト挿通孔３３１が形成された板状部材（あるいは、中実の棒状部材）３３を架設する。 Further, in the above-described embodiment, the beam portion 3 includes the main body portion 31 and the inner cover portion 32, but the inner cover portion 32 may be omitted. In the case where the inner cover portion 32 is not provided, for example, as shown in FIG. Projections 301e may be directly formed at or near the four corners of 30e, for example. Here, this protrusion 301e constitutes the protrusion D. As shown in FIG. The configuration without the inner cover portion 32 is also effective when the end surface 30f of the main body portion 31f of the beam portion 3f has a circular frame shape as shown in FIG. In this case, for example, three protrusions 301f can be directly formed at regular intervals along the circumferential direction of the end face 30f by processing the end face 30f or by joining another member to the end face 30f. good. Here, the projecting portion 301f constitutes the projecting portion D. As shown in FIG. As a matter of course, when the inner cover portion 32 is not provided, a plate-like member (or a solid rod-like member) having a bolt insertion hole 331 formed between the pair of side walls of the main body portions 31e and 31f is provided. 33 is erected.

また、上記の実施形態においては、天板付家具ＡのフレームＦＲにおいて、連結用突出部２とビーム部３の連結構造に本発明が適用された場合を例示したが、本発明は、フレームＦＲと横フレームＳＦＲの連結部分、具体的には、連結用突出部２と横フレームＳＦＲの連結構造、等に適用されてもよい。 In the above-described embodiment, the case where the present invention is applied to the connecting structure between the connecting protrusion 2 and the beam portion 3 in the frame FR of the furniture A with a top plate is exemplified. It may be applied to the connecting portion of the lateral frame SFR, more specifically, the connecting structure of the connecting protrusion 2 and the lateral frame SFR.

また、上記の実施形態においては、天板付家具ＡのフレームＦＲの連結構造に本発明が適用された場合を例示したが、本発明は、天板付家具Ａ以外の各種の家具（例えば、椅子、収納家具、等）のフレームにおける部材間の連結に適用することができる。 In the above-described embodiment, the case where the present invention is applied to the connection structure of the frame FR of the furniture A with a top plate is illustrated, but the present invention can be applied to various types of furniture other than the furniture A with a top plate (for example, chairs, storage furniture, etc.).

その他の構成も、本発明の趣旨を逸脱しない範囲で種々変形が可能である。また、いうまでもなく、各実施形態にて例示された構成が部分的に互いに組み合わされることも可能である。 Other configurations can also be modified in various ways without departing from the gist of the present invention. Moreover, it goes without saying that the configurations illustrated in the respective embodiments can be partially combined with each other.

１脚本体部
２連結用突出部（第１部材）
２０端面（第１端面）
２１本体部（第１本体部）
２１１側壁
２１２貫通孔
２２固定架材
２２１固定具
２２２ボルト孔
３ビーム部（第２部材）
３０端面（第２端面）
３１本体部（第２本体部）
３１１底板部
３１２窓部
３２内カバー部
３２１側壁部
３２１１内延部分
３２１２外延部分
３２２奥壁部
３２３係止用突起部
３２４切欠き
３２５ボルト挿通孔
４ボルト（締結部材）
Ｄ突部
Ａ天板付家具
ＴＢ天板
ＦＲフレーム
ＳＦＲ横フレーム
ＬＵ脚ユニット
1 script body portion 2 connecting protrusion (first member)
20 end face (first end face)
21 main body (first main body)
211 side wall 212 through hole 22 fixed bridge 221 fixture 222 bolt hole 3 beam portion (second member)
30 end face (second end face)
31 main body (second main body)
311 bottom plate portion 312 window portion 32 inner cover portion 321 side wall portion 3211 inner extension portion 3212 outer extension portion 322 inner wall portion 323 locking protrusion 324 notch 325 bolt insertion hole 4 bolt (fastening member)
D Projection A Furniture with top plate TB Top plate FR Frame SFR Horizontal frame LU Leg unit

Claims

A connection structure between members in a frame formed by connecting a plurality of members,
a first member having a first end surface;
a second member having a second end surface facing the first end surface;
three or more protrusions interposed between the two end surfaces in a state in which the first end surface and the second end surface are arranged to face each other;
a fastening member that fastens the first member and the second member in a state where the first end surface and the second end surface collide with each other via the three or more protrusions;
with
The second member is
a cylindrical second main body with an open end face;
an inner cover portion fitted into the opening of the end face;
with
The inner cover portion is formed with a locking protrusion that is locked to the end surface of the second main body, and the locking protrusion constitutes the protrusion. Linked structure.

The frame connecting structure according to claim 1,
the first end face and the second end face are substantially the same in shape and size;
Both end faces are arranged facing each other in a positional relationship that completely overlaps,
A connecting structure of frames characterized by:

The frame connecting structure according to claim 1,
the first end surface and the second end surface are different in at least one of shape and size;
They are arranged facing each other in a positional relationship such that both end faces partially overlap,
The protrusion is arranged at a position corresponding to a region where both end faces overlap when both end faces are arranged to face each other.
A connecting structure of frames characterized by:

The frame connection structure according to any one of claims 1 to 3,
the second end face has a rectangular frame shape,
The protrusions are arranged at positions corresponding to the four corners of the second end surface or the vicinity of the four corners.
A connecting structure of frames characterized by:

The frame connection structure according to any one of claims 1 to 3,
the second end face is in the shape of a circular frame,
The protrusions are arranged at positions corresponding to equally spaced positions along the circumferential direction of the second end face,
A connecting structure of frames characterized by:

The frame connection structure according to any one of claims 1 to 5,
The first member is
a cylindrical first body portion with an open end face;
with
The inner cover part
a pair of side wall portions extending along opposing inner walls of the second main body on the proximal end side and extending outside the second main body on the distal end side;
with
The portions of the pair of side wall portions that extend outside the second main body portion are inserted into the first main body portion along the inner wall surface of the first main body portion, thereby forming an end face of the first main body portion. , the end face of the second main body is arranged to face,
A connecting structure of frames characterized by:

The frame connection structure according to any one of claims 1 to 6,
The first member is
a fixed bridge bridged between the opposing side walls of the first main body;
with
The inner cover part
a back wall portion provided between the base end portions of the pair of side wall portions;
with
the fastening member is a bolt,
the bolt is inserted through an insertion hole formed in the inner wall portion and screwed into a bolt hole formed in the fixed frame;
A connecting structure of frames characterized by:

The frame connection structure according to claim 7,
A notch having a shape that follows the outer surface of the fixed frame is formed at each tip of the pair of side walls,
As the bolt is tightened into the bolt hole, the first member and the second member are guided in a direction toward each other while being positionally regulated such that the fixed member is accommodated in the notch. is fastened by the bolt, a portion of the fixed frame is accommodated in the notch,
A connecting structure of frames characterized by:

A piece of furniture with a top, characterized in that the frame connection structure according to any one of claims 1 to 8 is provided as a part thereof.