JP3685068B2 - CONNECTION STRUCTURE USING CONNECTION MEMBER AND METHOD FOR PRODUCING CONNECTION MEMBER - Google Patents

CONNECTION STRUCTURE USING CONNECTION MEMBER AND METHOD FOR PRODUCING CONNECTION MEMBER Download PDF

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JP3685068B2
JP3685068B2 JP2001004304A JP2001004304A JP3685068B2 JP 3685068 B2 JP3685068 B2 JP 3685068B2 JP 2001004304 A JP2001004304 A JP 2001004304A JP 2001004304 A JP2001004304 A JP 2001004304A JP 3685068 B2 JP3685068 B2 JP 3685068B2
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bent
bent portion
connecting member
connection
screw
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JP2002206512A (en
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孝 藤田
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Daifuku Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、コンベヤのフレーム等の連結対象部材と連結部材との連結構造および上記連結部材の製作方法に関する。
【０００２】
【従来の技術】
従来、この種の連結部材を用いた連結構造としては、例えば、図１１に示すように、ローラコンベヤ６０の左右一対のサイドフレーム６１ａ，６１ｂ（連結対象部材）同士を連結部材６２で連結するものがある。すなわち、図１２に示すように、上記連結部材６２は、四角筒状の本体部６３と、この本体部６３の両端に溶接されたフランジ部６４とで構成されている。両フランジ部６４にはそれぞれ連結孔６５が形成され、さらに、両サイドフレーム６１ａ，６１ｂにはボルト孔６６が形成されている。
【０００３】
これによると、両サイドフレーム６１ａ，６１ｂ間に連結部材６２をセットし、連結孔６５とボルト孔６６にボルト６７を挿通してナット６８で締結することにより、連結部材６２の一端が一方のサイドフレーム６１ａに連結されるとともに他端が他方のサイドフレーム６１ｂに連結される。これにより、両サイドフレーム６１ａ，６１ｂが、連結部材６２を介して、一定間隔をあけて連結される。
【０００４】
また、上記とは別形式の連結部材を用いた連結構造として、図１３に示すように、チャンネル形状の連結部材７１内に２本のねじ棒７２を挿通したものがある。両ねじ棒７２は連結部材７１よりも長く形成されており、両ねじ棒７２の両端部は連結部材７１の両端から外側方へ所定長さだけ突出する。また、両サイドフレーム６１ａ，６１ｂにはそれぞれボルト孔６６（図１１参照）が形成されている。
【０００５】
これによると、両ねじ棒７２を連結部材７１内に挿通した状態で、上記両ねじ棒７２の両端部をサイドフレーム６１ａ，６１ｂのボルト孔６６に挿通し、サイドフレーム６１ａ，６１ｂの外側からねじ棒７２の両端部にナット７４をねじ込む。これにより、連結部材７１が両サイドフレーム６１ａ，６１ｂ間に挟まれるとともに両ねじ棒７２で支持され、両サイドフレーム６１ａ，６１ｂが一定間隔をあけて連結される。
【０００６】
【発明が解決しようとする課題】
しかしながら上記図１２に示される従来形式では、連結部材６２の本体部６３の両端にフランジ部６４を溶接しているため、溶接のコストが高くなるといった問題があり、さらに、溶接部を塗装する必要がある。
【０００７】
また、図１３に示される従来形式では、連結部材７１よりも長い２本のねじ棒７２を用いるため、ねじ棒７２のコストが高いといった問題がある。また、連結部材７１と両ねじ棒７２とは互いに固着されていないため、両サイドフレーム６１ａ，６１ｂ間に連結部材７１をセットする際、連結部材７１が、両ねじ棒７２に対して、ねじ棒７２の軸芯方向へ移動してずれてしまい、連結組立作業が不便であるといった問題がある。
【０００８】
本発明は、連結部材の溶接部を無くし、さらに、連結組立作業が容易に行える連結部材を用いた連結構造および連結部材の製作方法を提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記目的を達成するために本第１発明は、連結対象部材に対して連結部材の端部を連結する連結構造であって、
上記連結部材の端部には、連結部材の長さ方向に沿った軸芯周りに屈曲したＬ形状の第１屈曲部が形成され、
上記第１屈曲部の一部に切り込みを入れて切り込み部を形成し、
上記切り込み部を、上記軸芯周りに上記第１屈曲部とは反対側へ屈曲させて、第２屈曲部を形成し、
上記連結部材の端部に、上記第１屈曲部と第２屈曲部とに囲まれた連結孔が形成され、
外側から上記連結対象部材に連結具を挿通し、この連結具を上記連結孔に挿入することによって、連結部材の端部が連結対象部材に連結されるものである。
【００１０】
これによると、連結部材に第１屈曲部と第２屈曲部とを形成することにより、溶接せずに、曲げ加工のみによって、連結孔を形成することができる。したがって、溶接部が不要となる分、コストを低減でき、さらに、溶接部の塗装も不要となる。また、連結組立作業が容易に行える。
【００１１】
また、本第２発明は、第１および第２屈曲部の各内周面に雌ねじ部が形成され、
連結具として、上記雌ねじ部に螺合自在なねじ部材が用いられているものである。
【００１２】
これによると、ねじ部材を、外側から連結対象部材に挿通して、連結孔に挿入し雌ねじ部に螺合させることによって、連結部材の端部が連結対象部材に連結される。
【００１３】
また、本第３発明は、第２屈曲部は、軸芯方向において、一定間隔おきに複数形成されているものである。
また、本第４発明は、第１屈曲部と第２屈曲部とはそれぞれ、ねじ部材に対応したタップの下穴径に合わせて屈曲されているものである。
【００１４】
これによると、連結孔にタップをねじ込んで、第１および第２屈曲部の各内周面に雌ねじ部を切削加工することができる。
また、本第５発明は、連結対象部材としてフレームが一対配置され、
連結部材が上記一対のフレーム間に連結されるものである。
【００１５】
これによると、一対のフレーム同士が、連結部材を介して、一定間隔をあけて連結される。
また、本第６発明は、一方のフレームと他方のフレームとの間に連結具を介して取付けられて両フレームを連結する連結部材の製作方法であって、
平板材の両端に複数の切り込みを入れて切り込み部を形成し、
上記平板材を曲げ加工して、上記切り込み部の箇所に、長さ方向に沿った軸芯周りに屈曲したＬ形状の第１屈曲部を形成し、
上記切り込み部を、上記軸芯周りに上記第１屈曲部とは反対側へ屈曲させて、第２屈曲部を形成し、
第１屈曲部と第２屈曲部との間に、上記連結具が挿脱可能な連結孔を形成するものである。
【００１６】
これによると、溶接せずに、曲げ加工のみによって、第１屈曲部と第２屈曲部とに囲まれた連結孔を形成することができるため、溶接部が不要となる分、コストを低減でき、さらに、溶接部の塗装も不要となる。
【００１７】
尚、連結具を、フレームに挿通し、さらに連結孔に挿入することによって、連結部材の端部が上記連結具を介してフレームに連結される。
また、本第７発明は、連結孔にタップをねじ込んで、第１および第２屈曲部の各内周面に、連結具として用いられるねじ部材が螺合可能な雌ねじ部を形成するものである。
【００１８】
【発明の実施の形態】
以下、本発明における実施の形態を図１〜図８に基づいて説明する。
図４に示すように、１はローラコンベヤであり、チャンネル形状の左右一対のサイドフレーム２ａ，２ｂ（連結対象部材の一例）と、両サイドフレーム２ａ，２ｂの下部間に連結される連結部材３と、両サイドフレーム２ａ，２ｂの上部間に架設された回転自在な複数のローラ４と、これらローラ４を回転駆動させる回転駆動装置（図示せず）とで構成されている。
【００１９】
上記連結部材３の両端と各サイドフレーム２ａ，２ｂとの連結構造は以下の通りである。
すなわち、図１〜図３に示すように、上記連結部材３は、水平状の横板部６と、この横板部６の両側部から垂下された一対の縦板部７とで、下方開放のチャンネル形状に形成されている。上記横板部６から縦板部７にかけてのコーナー部にはそれぞれ、連結部材３の長さ方向（すなわち両サイドフレーム２ａ，２ｂ間の間隔方向）に沿った屈曲軸芯Ａ周りに９０°屈曲したＬ形状の第１屈曲部９が形成されている。
【００２０】
上記両第１屈曲部９にはそれぞれ、切り込み部１０が上記屈曲軸芯Ａ方向（すなわち連結部材３の長さ方向）において複数形成されている。上記各切り込み部１０を、上記屈曲軸芯Ａ周りに、上記第１屈曲部９とは反対側（内方下側）へ屈曲させることによって、円弧状の第２屈曲部１１が形成されている。尚、これら第２屈曲部１１は、上記屈曲軸芯Ａ方向（すなわち連結部材３の長さ方向）において、一定間隔おきに複数形成されている。
【００２１】
これにより、上記連結部材３の両端部には、第１屈曲部９と第２屈曲部１１とに囲まれた連結孔１２が形成される。これら第１および第２屈曲部９，１１の各内周面には、雌ねじ部１４が形成されている。
【００２２】
また、図４に示すように、上記サイドフレーム２ａ，２ｂにはボルト孔１５が形成され、ボルト１６（連結具およびねじ部材の一例）を、各サイドフレーム２ａ，２ｂの外側からボルト孔１５に挿通し、連結孔１２にねじ込むことによって、両サイドフレーム２ａ，２ｂが連結部材３を介して連結される。尚、上記第１屈曲部９と第２屈曲部１１とはそれぞれ、ボルト１６のねじサイズに対応したタップの下孔径に合わせて屈曲されている。
【００２３】
次に、上記連結部材３の製作方法を説明する。
先ず、図５に示すように、連結部材３の原材料である平板材３１の長さ方向の両端部に、上記屈曲軸芯Ａに直交する複数の切り込みを入れて、複数の切り込み部１０を形成する。その後、図６に示すように、曲げ加工用型材３２を用いて、平板材３１を屈曲軸芯Ａに沿って曲げ加工する。これにより、タップの下孔径に合わせて屈曲軸芯Ａ周りに屈曲した第１屈曲部９が形成され、上記平板材３１は、横板部６と縦板部７とから成るチャンネル状に形成される。
【００２４】
その後、図７に示すように、上記切り込み部１０の幅（ピッチ）に対応した別の曲げ加工用型材３３を用いて、上記切り込み部１０を内側（上記第１屈曲部９とは反対側）に曲げ加工する。これにより、タップの下孔径に合わせて屈曲した複数の第２屈曲部１１が形成され、以って、連結部材３の両端部に、第１屈曲部９と第２屈曲部１１とに囲まれた連結孔１２が形成される。
【００２５】
その後、図８に示すように、各連結孔１２にタップ３４をねじ込んで、第１および第２屈曲部９，１１の各内周面に、雌ねじ部１４を切削加工する。上記のような手順で、連結部材３が製作される。
【００２６】
これによると、溶接せずに、曲げ加工のみによって、第１屈曲部９と第２屈曲部１１とに囲まれた連結孔１２を形成することができるため、溶接部が不要となる分、コストを低減でき、さらに、溶接部の塗装も不要となる。
【００２７】
また、上記連結部材３を介して両サイドフレーム２ａ，２ｂを連結する場合、図４に示すように、両サイドフレーム２ａ，２ｂ間に連結部材３を配置し、ボルト１６を、サイドフレーム２ａ，２ｂの外側から各ボルト孔１５に挿通し、各連結孔１２に挿入してねじ込む。これにより、各ボルト１６が各連結孔１２内の雌ねじ部１４に螺合し、連結部材３の両端が両サイドフレーム２ａ，２ｂの内側面に連結される。これにより、両サイドフレーム２ａ，２ｂが、連結部材３を介して、一定間隔Ｂをあけて連結されるため、連結組立作業が容易に行える。
【００２８】
上記実施の形態では、図２に示すように、連結部材３をチャンネル状に形成しているが、図９に示すようにアングル状に形成してもよく、あるいは図１０に示すように、角筒状に形成してもよい。
【００２９】
上記実施の形態では、図１に示すように、ねじ部材の一例としてボルト１６を用いたが、ボルト１６に限定されるものではなく、皿ねじや止めねじ等を用いてもよい。
【００３０】
また、実施の形態では、第１および第２屈曲部９，１１の内周面に雌ねじ部１４を形成しているが、雌ねじ部１４を形成せず、さらに、連結具として、上記ボルト１６の代わりにピンを用い、上記ピンを連結孔１２へ挿入してもよい。
【００３１】
上記実施の形態では、図４に示すように、連結部材３を介して、ローラコンベヤ１の両サイドフレーム２ａ，２ｂを連結しているが、ローラコンベヤ１のサイドフレーム２ａ，２ｂに限定されるものではなく、連結部材３を介して他の形式のコンベヤ（ベルトコンベヤ等）の両サイドフレームを連結するものであってもよく、さらには、連結部材３を用いて他の機器の一部を連結するものであってもよい。
【００３２】
【発明の効果】
以上のように、本発明によれば、連結部材に第１屈曲部と第２屈曲部とを形成することにより、溶接せずに、曲げ加工のみによって、連結孔を形成することができる。したがって、溶接部が不要となる分、コストを低減でき、さらに、溶接部の塗装も不要となる。また、連結組立作業が容易に行える。
【図面の簡単な説明】
【図１】本発明の実施の形態における連結部材の端部の斜視図である。
【図２】図１におけるＸ−Ｘ矢視図である。
【図３】同、連結部材の連結孔の拡大図である。
【図４】同、連結部材を介して連結されたサイドフレームを備えたローラコンベヤの図である。
【図５】同、連結部材の製作方法を示す斜視図であり、平板材に切り込み部を形成した状態を示す。
【図６】同、連結部材の製作方法を示す斜視図であり、第１屈曲部を形成した状態を示す。
【図７】同、連結部材の製作方法を示す斜視図であり、第２屈曲部を形成した状態を示す。
【図８】同、連結部材の製作方法を示す斜視図であり、第１および第２屈曲部の内周面に雌ねじを形成した状態を示す。
【図９】本発明の他の実施の形態における連結部材の端部の図である。
【図１０】本発明の他の実施の形態における連結部材の端部の図である。
【図１１】従来の連結部材を介して連結されたサイドフレームを備えたローラコンベヤの図である。
【図１２】従来の連結部材の斜視図である。
【図１３】従来の連結部材の斜視図である。
【符号の説明】
２ａ，２ｂ サイドフレーム（連結対象部材）
３ 連結部材
９ 第１屈曲部
１０ 切り込み部
１１ 第２屈曲部
１２ 連結孔
１４ 雌ねじ部
１６ ボルト（連結具，ねじ部材）
３１ 平板材
３４ タップ
Ａ 屈曲軸心[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure between a connection target member such as a conveyor frame and a connection member, and a method of manufacturing the connection member.
[0002]
[Prior art]
Conventionally, as a connecting structure using this type of connecting member, for example, as shown in FIG. 11, a pair of left and right side frames 61a and 61b (members to be connected) of a roller conveyor 60 are connected by a connecting member 62. There is. That is, as shown in FIG. 12, the connecting member 62 includes a rectangular tubular main body 63 and flanges 64 welded to both ends of the main body 63. Both flange portions 64 are respectively formed with connecting holes 65, and further, bolt holes 66 are formed in both side frames 61a and 61b.
[0003]
According to this, the connecting member 62 is set between the side frames 61a and 61b, the bolt 67 is inserted into the connecting hole 65 and the bolt hole 66 and fastened with the nut 68, so that one end of the connecting member 62 is connected to one side. The other end is connected to the other side frame 61b while being connected to the frame 61a. Thereby, both the side frames 61a and 61b are connected via the connecting member 62 at a predetermined interval.
[0004]
Further, as a connection structure using a connection member of a different type from the above, there is one in which two screw rods 72 are inserted into a channel-shaped connection member 71 as shown in FIG. Both screw rods 72 are formed longer than the connecting member 71, and both end portions of both screw rods 72 protrude outward from both ends of the connecting member 71 by a predetermined length. Further, bolt holes 66 (see FIG. 11) are formed in the side frames 61a and 61b, respectively.
[0005]
According to this, in a state where both screw rods 72 are inserted into the connecting member 71, both end portions of the both screw rods 72 are inserted into the bolt holes 66 of the side frames 61a and 61b, and screws are inserted from outside the side frames 61a and 61b. Screw nuts 74 into both ends of the rod 72. As a result, the connecting member 71 is sandwiched between the side frames 61a and 61b and supported by the screw rods 72, and the side frames 61a and 61b are connected at a predetermined interval.
[0006]
[Problems to be solved by the invention]
However, in the conventional type shown in FIG. 12, since the flange portions 64 are welded to both ends of the main body portion 63 of the connecting member 62, there is a problem that the welding cost becomes high, and it is necessary to paint the welded portion. There is.
[0007]
Further, the conventional type shown in FIG. 13 has a problem that the cost of the screw rod 72 is high because two screw rods 72 longer than the connecting member 71 are used. Further, since the connecting member 71 and the screw rods 72 are not fixed to each other, when the connecting member 71 is set between the side frames 61 a and 61 b, the connecting member 71 is screw rods with respect to the screw rods 72. There is a problem that the connecting and assembling work is inconvenient because it moves in the axial direction of 72 and shifts.
[0008]
It is an object of the present invention to provide a connecting structure using a connecting member that eliminates the welded portion of the connecting member and that facilitates connecting and assembling work and a method for manufacturing the connecting member.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the first invention is a connection structure for connecting an end of a connection member to a connection target member,
An L-shaped first bent portion that is bent around the axial center along the length direction of the connecting member is formed at the end of the connecting member,
Forming a notch by cutting a part of the first bent portion,
Bending the cut portion around the axis to the opposite side of the first bent portion to form a second bent portion;
A connecting hole surrounded by the first bent portion and the second bent portion is formed at an end of the connecting member,
The end of the connection member is connected to the connection target member by inserting the connection tool into the connection target member from the outside and inserting the connection tool into the connection hole.
[0010]
According to this, by forming the first bent portion and the second bent portion in the connecting member, the connecting hole can be formed only by bending without welding. Therefore, the cost can be reduced as much as the welded portion becomes unnecessary, and further, the coating of the welded portion becomes unnecessary. Further, the connecting and assembling work can be easily performed.
[0011]
Further, in the second invention, a female thread portion is formed on each inner peripheral surface of the first and second bent portions,
As a connecting tool, a screw member that can be screwed into the female screw portion is used.
[0012]
According to this, the end of the connection member is connected to the connection target member by inserting the screw member from the outside into the connection target member, inserting the screw member into the connection hole, and screwing the screw member into the female screw portion.
[0013]
In the third invention, a plurality of second bent portions are formed at regular intervals in the axial direction.
In the fourth invention, each of the first bent portion and the second bent portion is bent in accordance with the pilot hole diameter of the tap corresponding to the screw member.
[0014]
According to this, a tap can be screwed into a connection hole, and an internal thread part can be cut into each internal peripheral surface of a 1st and 2nd bending part.
In the fifth invention, a pair of frames is arranged as a connection target member,
The connecting member is connected between the pair of frames.
[0015]
According to this, a pair of frames are connected via a connecting member with a constant interval.
Further, the sixth invention is a method of manufacturing a connecting member that is attached between one frame and the other frame via a connecting tool and connects both frames,
A plurality of cuts are made at both ends of the flat plate material to form cut portions,
The flat plate material is bent to form an L-shaped first bent portion that is bent around the axis along the length direction at the cut portion.
Bending the cut portion around the axis to the opposite side of the first bent portion to form a second bent portion;
A connecting hole is formed between the first bent portion and the second bent portion so that the connecting tool can be inserted and removed.
[0016]
According to this, since the connection hole surrounded by the first bent portion and the second bent portion can be formed only by bending without welding, the cost can be reduced as the welded portion becomes unnecessary. Furthermore, it is not necessary to paint the welded portion.
[0017]
Note that the end of the connecting member is connected to the frame via the connecting tool by inserting the connecting tool through the frame and then inserting the connecting tool into the connecting hole.
Further, according to the seventh aspect of the present invention, a tap is screwed into the connecting hole, and a female screw portion capable of screwing a screw member used as a connecting tool is formed on each inner peripheral surface of the first and second bent portions. .
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
As shown in FIG. 4, reference numeral 1 denotes a roller conveyor, which is a pair of left and right side frames 2a and 2b (an example of a member to be connected) in a channel shape and a connecting member 3 connected between the lower portions of both side frames 2a and 2b. And a plurality of freely rotatable rollers 4 installed between the upper portions of the side frames 2a and 2b, and a rotation driving device (not shown) for driving the rollers 4 to rotate.
[0019]
The connection structure between the both ends of the connecting member 3 and the side frames 2a and 2b is as follows.
That is, as shown in FIGS. 1 to 3, the connecting member 3 is opened downward by a horizontal horizontal plate portion 6 and a pair of vertical plate portions 7 suspended from both sides of the horizontal plate portion 6. The channel shape is formed. The corner portions from the horizontal plate portion 6 to the vertical plate portion 7 are bent by 90 ° around the bending axis A along the length direction of the connecting member 3 (that is, the interval direction between the side frames 2a and 2b). An L-shaped first bent portion 9 is formed.
[0020]
Each of the first bent portions 9 is formed with a plurality of cut portions 10 in the bent axis A direction (that is, the length direction of the connecting member 3). An arcuate second bent portion 11 is formed by bending each of the cut portions 10 around the bending axis A toward the opposite side (inward and lower side) of the first bent portion 9. . A plurality of the second bent portions 11 are formed at regular intervals in the bent axis A direction (that is, the length direction of the connecting member 3).
[0021]
Thereby, a connecting hole 12 surrounded by the first bent portion 9 and the second bent portion 11 is formed at both ends of the connecting member 3. Female threaded portions 14 are formed on the inner peripheral surfaces of the first and second bent portions 9 and 11.
[0022]
Further, as shown in FIG. 4, bolt holes 15 are formed in the side frames 2a and 2b, and bolts 16 (an example of a connecting tool and a screw member) are connected to the bolt holes 15 from the outside of the side frames 2a and 2b. Both side frames 2 a and 2 b are connected via the connecting member 3 by being inserted and screwed into the connecting hole 12. The first bent portion 9 and the second bent portion 11 are bent according to the diameter of the pilot hole of the tap corresponding to the screw size of the bolt 16.
[0023]
Next, a method for manufacturing the connecting member 3 will be described.
First, as shown in FIG. 5, a plurality of cuts 10 perpendicular to the bending axis A are formed at both ends in the length direction of the flat plate 31 that is a raw material of the connecting member 3 to form a plurality of cuts 10. To do. After that, as shown in FIG. 6, the flat plate 31 is bent along the bending axis A using the bending mold 32. As a result, the first bent portion 9 bent around the bending axis A in accordance with the diameter of the tap hole is formed, and the flat plate 31 is formed in a channel shape composed of the horizontal plate portion 6 and the vertical plate portion 7. The
[0024]
Thereafter, as shown in FIG. 7, using another bending mold 33 corresponding to the width (pitch) of the cut portion 10, the cut portion 10 is placed on the inner side (the side opposite to the first bent portion 9). Bend to. As a result, a plurality of second bent portions 11 bent in accordance with the pilot hole diameter of the tap are formed, so that both end portions of the connecting member 3 are surrounded by the first bent portion 9 and the second bent portion 11. The connecting hole 12 is formed.
[0025]
After that, as shown in FIG. 8, the tap 34 is screwed into each connection hole 12, and the female screw portion 14 is cut on the inner peripheral surfaces of the first and second bent portions 9 and 11. The connecting member 3 is manufactured by the procedure as described above.
[0026]
According to this, since the connecting hole 12 surrounded by the first bent portion 9 and the second bent portion 11 can be formed only by bending without welding, the cost of the welding portion becomes unnecessary. In addition, it is not necessary to paint the welds.
[0027]
When both side frames 2a and 2b are connected via the connecting member 3, as shown in FIG. 4, the connecting member 3 is disposed between the side frames 2a and 2b, and the bolts 16 are connected to the side frames 2a and 2b. 2b is inserted into each bolt hole 15 from the outside, inserted into each connecting hole 12, and screwed. As a result, each bolt 16 is screwed into the female screw portion 14 in each connection hole 12, and both ends of the connection member 3 are connected to the inner side surfaces of both side frames 2a, 2b. Thereby, since both the side frames 2a and 2b are connected through the connecting member 3 with a constant interval B, the connecting and assembling work can be easily performed.
[0028]
In the above embodiment, the connecting member 3 is formed in a channel shape as shown in FIG. 2, but it may be formed in an angle shape as shown in FIG. 9, or as shown in FIG. You may form in a cylinder shape.
[0029]
In the above embodiment, as shown in FIG. 1, the bolt 16 is used as an example of a screw member. However, the bolt 16 is not limited to the bolt 16, and a flat head screw, a set screw, or the like may be used.
[0030]
In the embodiment, the internal thread portion 14 is formed on the inner peripheral surfaces of the first and second bent portions 9, 11, but the internal thread portion 14 is not formed. Instead, a pin may be used and the pin may be inserted into the connecting hole 12.
[0031]
In the above embodiment, as shown in FIG. 4, both the side frames 2 a and 2 b of the roller conveyor 1 are connected via the connecting member 3, but are limited to the side frames 2 a and 2 b of the roller conveyor 1. It may be one that connects both side frames of another type of conveyor (such as a belt conveyor) via the connecting member 3, and further uses the connecting member 3 to connect a part of other equipment. You may connect.
[0032]
【The invention's effect】
As described above, according to the present invention, by forming the first bent portion and the second bent portion in the connecting member, the connecting hole can be formed only by bending without welding. Therefore, the cost can be reduced as much as the welded portion becomes unnecessary, and further, the coating of the welded portion becomes unnecessary. Further, the connecting and assembling work can be easily performed.
[Brief description of the drawings]
FIG. 1 is a perspective view of an end portion of a connecting member according to an embodiment of the present invention.
FIG. 2 is a view taken along arrow XX in FIG.
FIG. 3 is an enlarged view of a connection hole of the connection member.
FIG. 4 is a view of a roller conveyor provided with side frames connected via a connecting member.
FIG. 5 is a perspective view showing a manufacturing method of a connecting member, showing a state in which a cut portion is formed in a flat plate material.
FIG. 6 is a perspective view showing a manufacturing method of a connecting member, showing a state where a first bent portion is formed.
FIG. 7 is a perspective view showing a manufacturing method of a connecting member, showing a state where a second bent portion is formed.
FIG. 8 is a perspective view showing a manufacturing method of the connecting member, and shows a state in which female threads are formed on the inner peripheral surfaces of the first and second bent portions.
FIG. 9 is a view of an end portion of a connecting member according to another embodiment of the present invention.
FIG. 10 is a view of an end portion of a connecting member according to another embodiment of the present invention.
FIG. 11 is a view of a roller conveyor provided with side frames connected via a conventional connecting member.
FIG. 12 is a perspective view of a conventional connecting member.
FIG. 13 is a perspective view of a conventional connecting member.
[Explanation of symbols]
2a, 2b Side frame (member to be connected)
3 connecting member 9 first bent portion 10 cut portion 11 second bent portion 12 connecting hole 14 female screw portion 16 bolt (connector, screw member)
31 Flat plate 34 Tap A Bending axis

Claims (7)

連結対象部材に対して連結部材の端部を連結する連結構造であって、
上記連結部材の端部には、連結部材の長さ方向に沿った軸芯周りに屈曲したＬ形状の第１屈曲部が形成され、
上記第１屈曲部の一部に切り込みを入れて切り込み部を形成し、
上記切り込み部を、上記軸芯周りに上記第１屈曲部とは反対側へ屈曲させて、第２屈曲部を形成し、
上記連結部材の端部に、上記第１屈曲部と第２屈曲部とに囲まれた連結孔が形成され、
外側から上記連結対象部材に連結具を挿通し、この連結具を上記連結孔に挿入することによって、連結部材の端部が連結対象部材に連結されることを特徴とする連結部材を用いた連結構造。A connection structure for connecting an end of a connection member to a connection target member,
An L-shaped first bent portion that is bent around the axial center along the length direction of the connecting member is formed at the end of the connecting member,
Forming a notch by cutting a part of the first bent portion,
Bending the cut portion around the axis to the opposite side of the first bent portion to form a second bent portion;
A connecting hole surrounded by the first bent portion and the second bent portion is formed at an end of the connecting member,
The connection using the connection member, wherein the end of the connection member is connected to the connection target member by inserting the connection tool from the outside into the connection target member and inserting the connection tool into the connection hole. Construction. 第１および第２屈曲部の各内周面に雌ねじ部が形成され、
連結具として、上記雌ねじ部に螺合自在なねじ部材が用いられていることを特徴とする請求項１記載の連結部材を用いた連結構造。An internal thread portion is formed on each inner peripheral surface of the first and second bent portions,
The connecting structure using the connecting member according to claim 1, wherein a screw member that can be screwed into the female screw portion is used as the connecting tool. 第２屈曲部は、軸芯方向において、一定間隔おきに複数形成されていることを特徴とする請求項１または請求項２記載の連結部材を用いた連結構造。The connecting structure using the connecting member according to claim 1, wherein a plurality of the second bent portions are formed at regular intervals in the axial direction. 第１屈曲部と第２屈曲部とはそれぞれ、ねじ部材に対応したタップの下穴径に合わせて屈曲されていることを特徴とする請求項２または請求項３に記載の連結部材を用いた連結構造。The connecting member according to claim 2 or 3, wherein each of the first bent portion and the second bent portion is bent in accordance with a pilot hole diameter of a tap corresponding to the screw member. Connected structure. 連結対象部材としてフレームが一対配置され、
連結部材が上記一対のフレーム間に連結されることを特徴とする請求項１から請求項４のいずれかに記載の連結部材を用いた連結構造。A pair of frames are arranged as members to be connected,
The connecting structure using the connecting member according to any one of claims 1 to 4, wherein the connecting member is connected between the pair of frames. 一方のフレームと他方のフレームとの間に連結具を介して取付けられて両フレームを連結する連結部材の製作方法であって、
平板材の両端に複数の切り込みを入れて切り込み部を形成し、
上記平板材を曲げ加工して、上記切り込み部の箇所に、長さ方向に沿った軸芯周りに屈曲したＬ形状の第１屈曲部を形成し、
上記切り込み部を、上記軸芯周りに上記第１屈曲部とは反対側へ屈曲させて、第２屈曲部を形成し、
第１屈曲部と第２屈曲部との間に、上記連結具が挿脱可能な連結孔を形成することを特徴とする連結部材の製作方法。A method of manufacturing a connecting member that is attached between one frame and the other frame via a connector and connects both frames,
A plurality of cuts are made at both ends of the flat plate material to form cut portions,
The flat plate material is bent to form an L-shaped first bent portion that is bent around the axis along the length direction at the cut portion.
Bending the cut portion around the axis to the opposite side of the first bent portion to form a second bent portion;
A connecting member manufacturing method, wherein a connecting hole into which the connecting tool can be inserted and removed is formed between the first bent portion and the second bent portion. 連結孔にタップをねじ込んで、第１および第２屈曲部の各内周面に、連結具として用いられるねじ部材が螺合可能な雌ねじ部を形成することを特徴とする請求項６記載の連結部材の製作方法。7. The coupling according to claim 6, wherein a tapped screw is screwed into the coupling hole, and a female thread portion capable of screwing a screw member used as a coupling tool is formed on each inner peripheral surface of the first and second bent portions. How to make a member.
JP2001004304A 2001-01-12 2001-01-12 CONNECTION STRUCTURE USING CONNECTION MEMBER AND METHOD FOR PRODUCING CONNECTION MEMBER Expired - Fee Related JP3685068B2 (en)

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