JP6803623B2 - Connection structure of pipe columns for folding canes - Google Patents

Connection structure of pipe columns for folding canes Download PDF

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JP6803623B2
JP6803623B2 JP2019084533A JP2019084533A JP6803623B2 JP 6803623 B2 JP6803623 B2 JP 6803623B2 JP 2019084533 A JP2019084533 A JP 2019084533A JP 2019084533 A JP2019084533 A JP 2019084533A JP 6803623 B2 JP6803623 B2 JP 6803623B2
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武 梅村
武 梅村
和雄 梅村
和雄 梅村
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有限会社テクノケア
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Description

本発明は、折り畳み式杖に用いられる、パイプ状支柱の接続構造に関する。 The present invention relates to a connecting structure of pipe-shaped columns used in a folding cane.

従来、金属パイプなどの折り畳み式杖には、隣り合うパイプ支柱の端部同士が、凹凸形状のテーパの付いた連結金具によって合体するとともに、夫々のパイプ支柱の中心を通るゴムひもによって引き合って連結する構造のものが一般的であった。 Conventionally, in a folding cane such as a metal pipe, the ends of adjacent pipe columns are united by a connecting metal fitting with a concave-convex taper, and are attracted and connected by a rubber string passing through the center of each pipe column. The structure of the pipe was common.

上記構造の詳細を、図３を用いて説明する。図３は従来一般に用いられていた折り畳み式杖の連結部の構造の一例を示す説明図で、(a)はパイプ支柱同士を連結した状態を示す断面図、(b)は(a)のパイプ支柱同士を折り畳んだ状態の外観を示す図である。
図３(a)に示すように、隣り合うパイプ支柱５１、５２には、夫々、テーパの付いた連結金具（管状連結部材）５３、５４が取り付けられている。連結金具５３、５４は中空になっていて、内部にゴムひも５５が張られた状態で通っている。ゴムひも５５の両端は杖の上端及び下端に固定されており、パイプ支柱５１、５２はゴムひも５５を介して常に互いに引き合う状態となっている。
図３(a)に示す状態から、パイプ支柱５１とパイプ支柱５２を手で引き離すようにゴムひも５５を伸ばすと、連結金具５３と連結金具５４とを分離することができる。
パイプ支柱５１の連結金具５３とパイプ支柱５２の連結金具５４とを分離後、図３(b)に示すように、パイプ支柱５３とパイプ支柱５４とを折り畳む。 The details of the above structure will be described with reference to FIG. FIG. 3 is an explanatory view showing an example of the structure of a connecting portion of a foldable cane that has been generally used in the past, (a) is a cross-sectional view showing a state in which pipe columns are connected to each other, and (b) is a pipe (a). It is a figure which shows the appearance of the state in which the columns are folded.
As shown in FIG. 3A, tapered connecting metal fittings (tubular connecting members) 53 and 54 are attached to the adjacent pipe columns 51 and 52, respectively. The connecting metal fittings 53 and 54 are hollow and pass through with a rubber string 55 stretched inside. Both ends of the elastic cord 55 are fixed to the upper end and the lower end of the cane, and the pipe columns 51 and 52 are always attracted to each other via the elastic cord 55.
When the rubber string 55 is extended so as to manually separate the pipe support 51 and the pipe support 52 from the state shown in FIG. 3A, the connecting metal fitting 53 and the connecting metal fitting 54 can be separated.
After separating the connecting metal fitting 53 of the pipe support 51 and the connecting metal fitting 54 of the pipe support 52, the pipe support 53 and the pipe support 54 are folded as shown in FIG. 3 (b).

しかし、上記従来の構造には、図３(b)に示すようなパイプ支柱５１とパイプ支柱５２とを折り畳んだ状態において、連結金具５４の外周部がパイプ支柱５１の外周部との接触点５６を強く圧迫するため傷が付き易く、パイプ支柱５１の外周面に施した、例えば花柄などの装飾が接触部において損傷が避けられない、といった問題や、折り畳んだ状態のパイプ支柱５１とパイプ支柱５２から手を離すとゴムひも５５の張力によって折り畳んだパイプ支柱５１、５２が瞬時に開いてしまい、折り畳んだ状態を保持することができない、といった問題があった。 However, in the conventional structure, when the pipe column 51 and the pipe column 52 are folded as shown in FIG. 3B, the outer peripheral portion of the connecting metal fitting 54 is the contact point 56 with the outer peripheral portion of the pipe column 51. It is easy to get scratched because it presses strongly, and there are problems that the outer peripheral surface of the pipe support 51 is inevitably damaged at the contact part, for example, decorations such as floral patterns, and the pipe support 51 and the pipe support in the folded state. When the hand is released from 52, the folded pipe columns 51 and 52 are instantly opened due to the tension of the elastic cord 55, and there is a problem that the folded state cannot be maintained.

そこで、本発明者は、試行錯誤の末、パイプ支柱を折り畳んだときにパイプ支柱同士が引き付け合わず、手を離しても折り畳んだ状態を保持可能な折り畳み式杖用パイプ支柱の接続構造を導出した（特許文献１参照）。 Therefore, after trial and error, the present inventor has derived a connection structure for foldable cane pipe struts that does not attract each other when the pipe struts are folded and can maintain the folded state even when the hands are released. (See Patent Document 1).

図４は本発明者が導出した特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造の一例を示す説明図で、(a)はパイプ支柱同士を連結した状態を示す断面図、(b)は(a)のパイプ支柱同士を折り畳んだ状態の外観を示す断面図、(c)は折り畳み式杖用パイプ支柱の接続構造に用いられる被係止部材の形状を示す平面図である。図５は図４の折り畳み式杖用パイプ支柱の接続構造における被係止部材の機能を示す説明図で、(a)はパイプ支柱同士の連結を解除する初期状態を示す概略断面図、(b)はパイプ支柱同士の連結を解除する中間状態を示す概略断面図、(c)はパイプ支柱同士の連結の解除が完了した状態を示す概略断面図、(d)は折り畳んだパイプ支柱同士を連結するときの初期状態を示す概略断面図である。なお、図５では便宜上、バネが図示省略されている。
特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造は、パイプ支柱１、２と、第１の管状連結部材３と、第２の管状連結部材４と、管状係止部材１５と、被係止部材１４と、第１のワイヤ部材７と、第２のワイヤ部材８と、バネ９と、第１の移動規制部材１２、１３と、第２の移動規制部材１６、１７を有している。図４中、１０はばね受け、１１は緩衝部材である。
第１の管状連結部材３は、パイプ支柱１における一方の側（図４(a)において右側）の端部に設けられ、接着剤により固定されており、第１の筒状部３ａと、第２の筒状部３ｂとを備えている。第１の筒状部３ａは、他方の側（図４(a)において左側）に向かって開口径が狭くなるようにテーパのついた内周部３ａ１を有している。第２の筒状部３ｂは、パイプ支柱１の内径よりも小さな外径を有している。
第２の管状連結部材４は、パイプ支柱２における他方の側（図４(a)において左側）の端部に設けられ、接着剤により固定されており、外周部４ａを備えている。外周部４ａは、第１の筒状部３ａの内周部３ａ１に嵌合可能に形成されている。 FIG. 4 is an explanatory view showing an example of the connection structure of the foldable cane pipe support described in Patent Document 1 derived by the present inventor, and FIG. 4A is a cross-sectional view showing a state in which the pipe columns are connected to each other, (b). ) Is a cross-sectional view showing the appearance of the pipe struts of (a) in a folded state, and (c) is a plan view showing the shape of the locked member used for the connecting structure of the foldable cane pipe struts. 5A and 5B are explanatory views showing the function of the locked member in the connection structure of the foldable cane pipe column of FIG. 4, and FIG. 5A is a schematic cross-sectional view showing an initial state of disconnecting the pipe columns from each other, (b). ) Is a schematic cross-sectional view showing an intermediate state in which the pipe struts are disconnected from each other, (c) is a schematic cross-sectional view showing a state in which the pipe struts are disconnected from each other, and (d) is a schematic cross-sectional view showing the folded pipe struts being connected to each other. It is a schematic cross-sectional view which shows the initial state at the time of doing. In FIG. 5, the spring is not shown for convenience.
The connection structure of the foldable cane pipe column described in Patent Document 1 includes pipe columns 1 and 2, a first tubular connecting member 3, a second tubular connecting member 4, a tubular locking member 15, and a cover. It has a locking member 14, a first wire member 7, a second wire member 8, a spring 9, a first movement restricting member 12 and 13, and a second movement restricting member 16 and 17. There is. In FIG. 4, 10 is a spring receiver and 11 is a cushioning member.
The first tubular connecting member 3 is provided at the end of one side (right side in FIG. 4A) of the pipe column 1 and is fixed by an adhesive, and has a first tubular portion 3a and a first tubular connecting member 3. It is provided with a tubular portion 3b of 2. The first tubular portion 3a has an inner peripheral portion 3a1 tapered so that the opening diameter becomes narrower toward the other side (left side in FIG. 4A). The second tubular portion 3b has an outer diameter smaller than the inner diameter of the pipe column 1.
The second tubular connecting member 4 is provided at the end of the other side (left side in FIG. 4A) of the pipe column 2, is fixed by an adhesive, and has an outer peripheral portion 4a. The outer peripheral portion 4a is formed so as to be fitted to the inner peripheral portion 3a1 of the first tubular portion 3a.

管状係止部材１５は、第１の管状連結部材３における他方の側（図４(a)において左側）の端部に設けられている。また、管状係止部材１５の一方の側の端部は、緩い開口円錐形状に形成されている。
被係止部材１４は、図４(c)に示すように、一端に第１のフック部２０、他端に第２のフック部１９を有している。第１のフック部２０は、管状係止部材１５における一方の側（図４(a)において右側）の端部に係止可能な形状且つ管状係止部材１５の内部を挿通可能な大きさを有して形成されている。第２のフック部１９は、管状係止部材１５における他方の側（図４(a)において左側）の端部に当接可能な形状且つ管状係止部材１５の内部を挿通不能な大きさに形成されている。また、被係止部材１４は、第１のフック部２０における管状係止部材１５と当接する辺の先端から一方の側の先端に向かって幅が狭くなるように傾斜し、全体が細長板状に形成されている。
第１のワイヤ部材７は、一端が第２のフック部１９に形成された、第１の接続部としての連結穴２２に接続し、他端が第１の移動規制部材と接続している。
第２のワイヤ部材８は、他端が被係止部材１４の一方の側の先端に形成された、第２の接続部としての連結穴２１に接続し、一端が第２の移動規制部材と接続している。
バネ９は、パイプ支柱１の内部において、一端が第２の筒状部３ｂを遊嵌した状態で、第１の筒状部３ａと当接し第１のワイヤ部材７を他方の側の方向に付勢している。
第１の移動規制部材は、第１のワイヤ部材７を通す座金１２と、座金１２の他方の側の面に当接可能なリング状針金部材１３とからなる。そして、第１の移動規制部材は、リング状針金部材１３が第１のワイヤ部材７の他端と接続するとともに、座金１２の一方の側の面がばね受け１０を間に挟んでコイルばね９と当接してコイルばね９の他方の側（図４(a)において左側）の方向への移動を規制するように構成されている。
第２の移動規制部材は、第２のワイヤ部材８を通す座金１６と、座金１６の一方の側の面に当接可能なリング状針金部材１７とからなる。そして、リング状針金部材１７が第２のワイヤ部材８の一端と接続するとともに、座金１６の他方の側の面が緩衝部材１１を間に挟んでパイプ支柱２の第２の管状連結部材４における一方の側（図４(a)において右側）の端部に当接して第２のワイヤ部材８の他方の側（図４(a)において左側）の方向への移動を規制するように構成されている。 The tubular locking member 15 is provided at the end of the other side (left side in FIG. 4A) of the first tubular connecting member 3. Further, one end of the tubular locking member 15 is formed in a loose open conical shape.
As shown in FIG. 4C, the locked member 14 has a first hook portion 20 at one end and a second hook portion 19 at the other end. The first hook portion 20 has a shape that can be locked to one end of the tubular locking member 15 (the right side in FIG. 4A) and a size that allows the inside of the tubular locking member 15 to be inserted. Has been formed. The second hook portion 19 has a shape that allows contact with the end of the other side (left side in FIG. 4A) of the tubular locking member 15 and a size that makes it impossible to insert the inside of the tubular locking member 15. It is formed. Further, the locked member 14 is inclined so that the width becomes narrower from the tip of the side of the first hook portion 20 in contact with the tubular locking member 15 toward the tip of one side, and the whole is in the shape of an elongated plate. Is formed in.
One end of the first wire member 7 is connected to a connecting hole 22 as a first connecting portion formed in the second hook portion 19, and the other end is connected to the first movement restricting member.
The second wire member 8 is connected to a connecting hole 21 as a second connecting portion, the other end of which is formed at the tip of one side of the locked member 14, and one end of the second wire member 8 is connected to the second movement restricting member. You are connected.
The spring 9 abuts on the first tubular portion 3a with the second tubular portion 3b loosely fitted at one end inside the pipe column 1, and causes the first wire member 7 to move toward the other side. I'm urging.
The first movement restricting member includes a washer 12 through which the first wire member 7 is passed, and a ring-shaped wire member 13 capable of contacting the other side surface of the washer 12. Then, in the first movement restricting member, the ring-shaped wire member 13 is connected to the other end of the first wire member 7, and the one side surface of the washer 12 sandwiches the spring receiver 10 between the coil springs 9. It is configured to abut with and restrict the movement of the coil spring 9 in the direction of the other side (left side in FIG. 4A).
The second movement restricting member includes a washer 16 through which the second wire member 8 is passed, and a ring-shaped wire member 17 capable of contacting one side surface of the washer 16. Then, the ring-shaped wire member 17 is connected to one end of the second wire member 8, and the other side surface of the washer 16 sandwiches the cushioning member 11 in between, and the second tubular connecting member 4 of the pipe column 2. It is configured to abut on the end of one side (right side in FIG. 4A) to restrict movement of the second wire member 8 in the direction of the other side (left side in FIG. 4A). ing.

このように構成された特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造では、図５(d)に示すように、内周部３ａ１に外周部４ａを嵌合させたときに、被係止部材１４が、第１のフック部２０における管状係止部材１５と当接する辺の先端から一方の側の先端に向かって幅が狭くなるように傾斜した部位を第２の管状連結部材４における他方の側の端部に押圧され、第１のフック部２０による管状係止部材１５における一方の側の端部との係止を解除されて、図４(a)に示すように、バネ９の付勢力により第１のパイプ支柱１の内部を他方の側（図４(a)において左側）の方向に移動し、第１の管状連結部材３と第２の管状連結部材４との嵌合状態が保持される。また、図５(a)、図５(b)に示すように、第２の管状連結部材４が第１の管状連結部材３から離れるように、パイプ支柱１、２を引っ張り、バネ９の付勢力に抗して被係止部材１４を一方の側（図５(a)、図５(b)において右側）の方向に移動させて、図５(c)に示すように、第２のフック部１９を管状係止部材１５における他方の側の端部に当接させたときに、被係止部材１４が第２のフック部１９とは反対側の辺における管状係止部材１５との接点２３を支点として回転し、第１のフック部２０が管状係止部材１５における一方の側の端部に係止して、コイルばね９の付勢力による他方の側の方向への移動を阻止する。
これにより、特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造によれば、図４(b)に示すパイプ支柱１、２同士を折り畳んだ状態のときに、パイプ支柱１、２同士が引き付け合うことがないので、パイプ支柱１、２の外周面に傷がつかない。また、手を離しても折り畳んだ状態を保持することができる。 In the connection structure of the foldable cane pipe column described in Patent Document 1 configured in this way, as shown in FIG. 5 (d), when the outer peripheral portion 4a is fitted to the inner peripheral portion 3a1, it is covered. The second tubular connecting member 4 is a portion of the first hook portion 20 in which the locking member 14 is inclined so that the width becomes narrower from the tip of the side that abuts the tubular locking member 15 toward the tip of one side. Pressed by the other end of the hook, the first hook 20 releases the tubular locking member 15 from the other end, and as shown in FIG. 4A, the spring. The urging force of 9 moves the inside of the first pipe column 1 toward the other side (left side in FIG. 4A), and fits the first tubular connecting member 3 and the second tubular connecting member 4. The combined state is maintained. Further, as shown in FIGS. 5 (a) and 5 (b), the pipe columns 1 and 2 are pulled so that the second tubular connecting member 4 is separated from the first tubular connecting member 3, and the spring 9 is attached. The locked member 14 is moved in the direction of one side (the right side in FIGS. 5A and 5B) against the force, and the second hook is as shown in FIG. 5C. When the portion 19 is brought into contact with the other end of the tubular locking member 15, the locked member 14 comes into contact with the tubular locking member 15 on the side opposite to the second hook portion 19. Rotating around 23 as a fulcrum, the first hook portion 20 locks to one end of the tubular locking member 15 to prevent the coil spring 9 from moving in the other side due to the urging force. ..
As a result, according to the connection structure of the foldable cane pipe columns described in Patent Document 1, when the pipe columns 1 and 2 shown in FIG. 4B are folded, the pipe columns 1 and 2 are connected to each other. Since they do not attract each other, the outer peripheral surfaces of the pipe columns 1 and 2 are not scratched. In addition, the folded state can be maintained even if the hand is released.

特許第３８７６４１８号公報Japanese Patent No. 3876418

しかるに、本発明者が、更なる研究考察を行った結果、特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造には、パイプ支柱が引っ張られることに起因した、パイプ支柱を折り畳んだ状態を保持するための改善余地があることが判明した。 However, as a result of further research and consideration by the present inventor, the connection structure of the foldable cane pipe strut described in Patent Document 1 is in a state in which the pipe strut is folded due to the fact that the pipe strut is pulled. It turns out that there is room for improvement to maintain.

本発明は、上記従来の課題を鑑みてなされたものであり、パイプ支柱を折り畳んだときにパイプ支柱同士が引き付け合わないようにし、手を離しても折り畳んだ状態が保持でき、さらに、パイプ支柱が引っ張られる方向如何によらず、パイプ支柱を折り畳んだ状態を確実に保持可能な折り畳み式杖用パイプ支柱の接続構造を提供することを目的としている。 The present invention has been made in view of the above-mentioned conventional problems, and prevents the pipe columns from attracting each other when the pipe columns are folded, and can maintain the folded state even when the hands are released. It is an object of the present invention to provide a connection structure of a foldable cane pipe strut that can reliably hold a folded state of a pipe strut regardless of the direction in which the pipe strut is pulled.

上記の目的を達成するために、本発明による折り畳み式杖用パイプ支柱の接続構造は、第ｎ番目のパイプ支柱と、第ｎ＋１番目のパイプ支柱と、前記第ｎ番目のパイプ支柱における一方の側の端部に設けられていて、他方の側に向かって開口径が狭くなるようにテーパのついた内周部を有する第１の筒状部と、前記ｎ番目のパイプ支柱の内径よりも小さな外径を有する第２の筒状部とを備えた第１の管状連結部材と、前記第ｎ＋１番目のパイプ支柱における他方の側の端部に設けられていて、前記第１の管状連結部材の前記内周部に嵌合可能な外周部を備えた第２の管状連結部材と、前記第１の管状連結部材における他方の側の端部に設けられた管状係止部材と、一端に前記管状係止部材における一方の側の端部に係止可能且つ該管状係止部材の内部を挿通可能な第１のフック部、他端に該管状係止部材の内部を挿通不能な第２のフック部を有し、前記第１のフック部における前記管状係止部材と当接する辺の先端から一方の側の先端に向かって幅が狭くなるように傾斜した、細長板状の被係止部材と、一端が前記第２のフック部に設けられた第１の接続部に接続する第１のワイヤ部材と、他端が前記被係止部材における所定位置に設けられた第２の接続部に接続する第２のワイヤ部材と、前記第ｎ番目のパイプ支柱の内部において、一端が前記第２の筒状部を遊嵌した状態で、前記第１の筒状部と当接し前記第１のワイヤ部材を他方の側の方向に付勢するコイルばねと、前記第１のワイヤ部材の他端と接続するとともに、前記コイルばねと当接して該コイルばねの他方の側の方向への移動を規制する第１の移動規制部材と、前記第２のワイヤ部材の一端と接続するとともに、前記第ｎ＋１番目のパイプ支柱の前記第２の管状連結部材における一方の側の端部に当接して該第２のワイヤ部材の他方の側の方向への移動を規制する第２の移動規制部材と、を有し、前記内周部に前記外周部を嵌合させたときに、前記被係止部材が、前記第１のフック部による前記管状係止部材における一方の側の端部との係止を解除されて、前記コイルばねの付勢力により前記第ｎ番目のパイプ支柱の内部を他方の側の方向に移動し、前記第１の管状連結部材と前記第２の管状連結部材との嵌合状態が保持され、前記第２の管状連結部材が前記第１の管状連結部材から離れるように、相互の前記パイプ支柱を引っ張り、前記コイルばねの付勢力に抗して前記被係止部材を一方の側の方向に移動させたときに、前記第１のフック部が前記管状係止部材における一方の側の端部に係止して、前記コイルばねの付勢力による他方の側の方向への移動を阻止するように構成された折り畳み式杖用パイプ支柱の接続構造において、前記第２のフック部が、前記管状係止部材における他方の側の端部に当接することなく、前記第２の筒状部における他方の側の端部に当接することができるように形成され、前記被係止部材における、前記第２のワイヤ部材の他端が接続する前記第２の接続部が、前記第２の筒状部の他方の側の端部における前記第２のフック部の当接点と前記内周部の一方の側の端縁とを結ぶ第１の仮想直線と、前記被係止部材の長手方向中央位置を通る第２の仮想直線との交点位置近傍から、前記第１の仮想直線に対し前記内周部の中心側の方向に３．８度傾斜した第３の仮想直線と前記第２の仮想直線との交点位置までの、該第２の仮想直線上の所定位置に設けられていることを特徴としている。 In order to achieve the above object, the connection structure of the folding cane pipe strut according to the present invention is the nth pipe strut, the n + 1th pipe strut, and one side of the nth pipe strut. It is smaller than the inner diameter of the first tubular portion and the nth pipe column, which is provided at the end of the pipe and has an inner peripheral portion tapered so that the opening diameter narrows toward the other side. A first tubular connecting member having a second tubular portion having an outer diameter, and the first tubular connecting member provided at the other end of the n + 1th pipe column on the other side. A second tubular connecting member having an outer peripheral portion that can be fitted to the inner peripheral portion, a tubular locking member provided at the other end of the first tubular connecting member, and the tubular at one end. A first hook portion that can be locked to one end of the locking member and can be inserted into the inside of the tubular locking member, and a second hook that cannot be inserted into the inside of the tubular locking member to the other end. An elongated plate-shaped locked member having a portion and inclined so as to narrow the width from the tip of a side that abuts the tubular locking member in the first hook portion toward the tip of one side. One end is connected to a first wire member connected to a first connecting portion provided on the second hook portion, and the other end is connected to a second connecting portion provided at a predetermined position on the locked member. In the inside of the second wire member and the nth pipe column, one end of the second tubular portion is loosely fitted, and the first wire comes into contact with the first tubular portion. The coil spring that urges the member in the direction of the other side is connected to the other end of the first wire member, and the member is in contact with the coil spring to restrict the movement of the coil spring in the direction of the other side. The first movement restricting member is connected to one end of the second wire member, and the n + 1th pipe column is in contact with one end of the second tubular connecting member. It has a second movement restricting member that restricts the movement of the two wire members in the other side direction, and when the outer peripheral portion is fitted to the inner peripheral portion, the locked member , The first hook portion is released from the one-sided end of the tubular locking member, and the urging force of the coil spring causes the inside of the nth pipe column to be on the other side. Moving in the direction, the fitted state of the first tubular connecting member and the second tubular connecting member is maintained, and the second tubular connecting member is separated from the first tubular connecting member. Pulling the pipe strut of the coil spring When the locked member is moved in the direction of one side against the above, the first hook portion is locked to the end portion on one side of the tubular locking member, and the coil spring. In a foldable cane pipe strut connection structure configured to prevent urging force from moving in the other side, the second hook is at the other end of the tubular locking member. It is formed so that it can abut on the other end of the second tubular portion without abutting the portion, and the other end of the second wire member in the locked member is connected. The first connecting portion connects the contact point of the second hook portion at the other end of the second tubular portion with the one-sided edge of the inner peripheral portion. From the vicinity of the intersection position of the virtual straight line of No. 1 and the second virtual straight line passing through the central position in the longitudinal direction of the locked member, 3.8 in the direction toward the center of the inner peripheral portion with respect to the first virtual straight line. It is characterized in that it is provided at a predetermined position on the second virtual straight line up to the intersection position of the third virtual straight line inclined in degree and the second virtual straight line.

また、本発明の折り畳み式杖用パイプ支柱の接続構造においては、前記被係止部材における、前記第２のワイヤ部材の他端が接続する前記第２の接続部が、前記第１の仮想直線と前記第２の仮想直線との交点位置に設けられているのが好ましい。 Further, in the connection structure of the foldable cane pipe column of the present invention, the second connecting portion to which the other end of the second wire member of the locked member is connected is the first virtual straight line. It is preferably provided at the intersection position between the second virtual straight line and the second virtual straight line.

また、本発明の折り畳み式杖用パイプ支柱の接続構造においては、前記被係止部材における、前記第２のワイヤ部材の他端が接続する前記第２の接続部が、前記第１の仮想直線に対し前記内周部の中心側の方向に３．８度傾斜した第３の仮想直線と、前記第２の仮想直線との交点位置に設けられているのが好ましい。 Further, in the connection structure of the foldable cane pipe column of the present invention, the second connecting portion to which the other end of the second wire member of the locked member is connected is the first virtual straight line. On the other hand, it is preferable that the third virtual straight line inclined by 3.8 degrees in the direction toward the center of the inner peripheral portion and the second virtual straight line are provided at the intersection position.

本発明によれば、パイプ支柱を折り畳んだときにパイプ支柱同士が引き付け合わないようにし、手を離しても折り畳んだ状態が保持でき、さらに、パイプ支柱が引っ張られる方向如何によらず、パイプ支柱を折り畳んだ状態を確実に保持可能な折り畳み式杖用パイプ支柱の接続構造が得られる。 According to the present invention, when the pipe struts are folded, the pipe struts do not attract each other, the folded state can be maintained even if the hands are released, and the pipe struts can be maintained regardless of the direction in which the pipe struts are pulled. A foldable cane pipe strut connection structure that can reliably hold the folded state can be obtained.

本発明の第１実施形態にかかる折り畳み式杖用パイプ支柱の接続構造の要部構成を示す概略断面図である。It is schematic cross-sectional view which shows the main part structure of the connection structure of the foldable cane pipe column which concerns on 1st Embodiment of this invention. 本発明の第２実施形態にかかる折り畳み式杖用パイプ支柱の接続構造の要部構成を示す概略断面図である。It is schematic cross-sectional view which shows the main part structure of the connection structure of the foldable cane pipe column which concerns on 2nd Embodiment of this invention. 従来一般に用いられていた折り畳み式杖の連結部の構造の一例を示す説明図で、(a)はパイプ支柱同士を連結した状態を示す断面図、(b)は(a)のパイプ支柱同士を折り畳んだ状態を示す外観図である。It is an explanatory view which shows an example of the structure of the connecting part of the folding cane which was generally used in the past. It is an external view which shows the folded state. 特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造の一例を示す説明図で、(a)はパイプ支柱同士を連結した状態を示す断面図、(b)は(a)のパイプ支柱同士を折り畳んだ状態の外観を示す断面図、(c)は折り畳み式杖用パイプ支柱の接続構造に用いられる被係止部材の形状を示す平面図である。It is explanatory drawing which shows an example of the connection structure of the foldable cane pipe strut described in Patent Document 1, (a) is the sectional view which shows the state which connected the pipe strut to each other, (b) is the pipe strut of (a) A cross-sectional view showing the appearance of the folded state, (c) is a plan view showing the shape of the locked member used for the connecting structure of the foldable cane pipe column. 図４の折り畳み式杖用パイプ支柱の接続構造における被係止部材の機能を示す説明図で、(a)はパイプ支柱同士の連結を解除する初期状態を示す概略断面図、(b)はパイプ支柱同士の連結を解除する中間状態を示す概略断面図、(c)はパイプ支柱同士の連結の解除が完了した状態を示す概略断面図、(d)は折り畳んだパイプ支柱同士を連結するときの初期状態を示す概略断面図である。FIG. 4 is an explanatory view showing the function of the locked member in the connection structure of the foldable cane pipe column, (a) is a schematic cross-sectional view showing an initial state of disconnecting the pipe columns, and (b) is a pipe. A schematic cross-sectional view showing an intermediate state in which the columns are disconnected from each other, (c) is a schematic sectional view showing a state in which the disconnection between the pipe columns is completed, and (d) is a schematic cross-sectional view showing a state in which the folded pipe columns are connected to each other. It is a schematic cross-sectional view which shows the initial state.

実施形態の説明に先立ち、本発明を導出するに至った経緯及び本発明の作用効果について説明する。
上述のように、本発明者が導出した特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造によれば、パイプ支柱１、２同士を折り畳んだ状態のときに、パイプ支柱１、２同士が引き付け合うことがないので、パイプ支柱１、２の外周面に傷がつかない。また、手を離しても折り畳んだ状態を保持することができる。
しかるに、本発明者が更なる研究考察を行ったところ、特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造には、次のような課題があることが判明した。 Prior to the description of the embodiment, the background leading to the derivation of the present invention and the action and effect of the present invention will be described.
As described above, according to the connection structure of the foldable cane pipe struts described in Patent Document 1 derived by the present inventor, when the pipe struts 1 and 2 are folded, the pipe struts 1 and 2 are connected to each other. Since they do not attract each other, the outer peripheral surfaces of the pipe columns 1 and 2 are not scratched. In addition, the folded state can be maintained even if the hand is released.
However, as a result of further research and consideration by the present inventor, it has been found that the connection structure of the foldable cane pipe strut described in Patent Document 1 has the following problems.

まず、図４、図５に示した特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造においては、第２のフック部１９は、管状係止部材１５における他方の側（図４において左側）の端部に当接可能な形状（図４(c)に示すように）縦軸１８に対して垂直に交差する形状）に形成されている。そして、図５(a)〜図５(c)に示した、第１のフック部２０が管状係止部材１５における一方の側の端部に係止して、コイルばね９の付勢力による他方の側の方向への移動を阻止するようにするために、第２の管状連結部材４が第１の管状連結部材３から離れるように、相互のパイプ支柱１、２を引っ張り、コイルばね９の付勢力に抗して被係止部材１４を一方の側（図５(a)〜図５(c)において右側）の方向に移動させたときに、第２のフック部１９が管状係止部材１５における他方の側の端部に当接するように構成されている。
しかし、本発明者による長年の研究考察の結果、相互のパイプ支柱１、２を引っ張ることによって第２のフック部１９を管状係止部材１５における他方の側の端部に当接させる構成の場合、管状係止部材１５が、第２のフック部１９の当接により、第１の管状連結部材３の長手方向に沿う方向に強い力を受けることに起因して、経年的なパイプ支柱１、２の折り畳みの繰り返しにより、第１の管状連結部材３における他方の側の端部から管状係止部材１５が離脱する虞があることが判明した。
管状係止部材１５は、第１の管状連結部材３の磨耗を防ぐために用いられる部材であり、第１の管状連結部材３の他方の側の端部に圧入した状態で固定されている。第１の管状連結部材３に圧入した状態で固定された管状係止部材１５が、第１の管状連結部材３の長手方向に沿う方向に強い力を断続的に受け続けると、第１の管状連結部材３から離脱する可能性が生じうる。 First, in the connection structure of the foldable cane pipe column described in Patent Document 1 shown in FIGS. 4 and 5, the second hook portion 19 is the other side of the tubular locking member 15 (left side in FIG. 4). ) Is formed in a shape that allows contact with the end portion (as shown in FIG. 4C) so as to intersect the vertical axis 18 perpendicularly. Then, the first hook portion 20 shown in FIGS. 5 (a) to 5 (c) is locked to one end of the tubular locking member 15 and is driven by the urging force of the coil spring 9. In order to prevent the movement of the coil spring 9 in the direction of the coil spring 9, the pipe columns 1 and 2 are pulled from each other so that the second tubular connecting member 4 is separated from the first tubular connecting member 3. When the locked member 14 is moved in the direction of one side (the right side in FIGS. 5A to 5C) against the urging force, the second hook portion 19 is a tubular locking member. It is configured to abut on the other end of 15.
However, as a result of many years of research and consideration by the present inventor, in the case of a configuration in which the second hook portion 19 is brought into contact with the other end of the tubular locking member 15 by pulling each other's pipe columns 1 and 2. , The aged pipe strut 1, due to the tubular locking member 15 receiving a strong force in the longitudinal direction of the first tubular connecting member 3 due to the contact of the second hook portion 19, It has been found that the tubular locking member 15 may be detached from the other end of the first tubular connecting member 3 due to repeated folding of 2.
The tubular locking member 15 is a member used to prevent wear of the first tubular connecting member 3, and is fixed to the other end of the first tubular connecting member 3 in a press-fitted state. When the tubular locking member 15 fixed in the state of being press-fitted into the first tubular connecting member 3 continues to receive a strong force intermittently in the direction along the longitudinal direction of the first tubular connecting member 3, the first tubular is formed. There is a possibility of disconnection from the connecting member 3.

そこで、本発明者は、第２のフック部１９を、管状係止部材１５における他方の側の端部に当接することなく、第２の筒状部３ｂにおける他方の側の端部に当接する形状（例えば、第２のフック部１９における一方の側の辺に突起部を有するような形状）に形成することを着想した。
第２のフック部１９をそのような形状に形成すれば、第１のフック部２０が管状係止部材１５における一方の側の端部に係止して、コイルばね９の付勢力による他方の側の方向への移動を阻止するようにするために、第２の管状連結部材４が第１の管状連結部材３から離れるように、相互のパイプ支柱１、２を引っ張り、コイルばね９の付勢力に抗して被係止部材１４を一方の側（図５において右側）の方向に移動させたときに、第２のフック部１９が管状係止部材１５における他方の側の端部には当接せず、管状係止部材１５が第１の管状連結部材３の長手方向に沿う方向に強い力を受けずに済む。その結果、経年的なパイプ支柱１、２の折り畳みの繰り返しによる第１の管状連結部材３からの管状係止部材１５の離脱を防止できる。 Therefore, the present inventor abuts the second hook portion 19 on the other side end portion of the second tubular portion 3b without contacting the other side end portion of the tubular locking member 15. The idea was to form it into a shape (for example, a shape having a protrusion on one side of the second hook portion 19).
If the second hook portion 19 is formed in such a shape, the first hook portion 20 is locked to one end of the tubular locking member 15 and the other by the urging force of the coil spring 9. In order to prevent the movement in the lateral direction, the pipe columns 1 and 2 are pulled from each other so that the second tubular connecting member 4 is separated from the first tubular connecting member 3, and the coil spring 9 is attached. When the locked member 14 is moved in the direction of one side (right side in FIG. 5) against the force, the second hook portion 19 is attached to the other end of the tubular locking member 15. The tubular locking member 15 does not abut and does not receive a strong force in the longitudinal direction of the first tubular connecting member 3. As a result, it is possible to prevent the tubular locking member 15 from being detached from the first tubular connecting member 3 due to repeated folding of the pipe columns 1 and 2 over time.

次に、図４、図５に示した特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造においては、第２のワイヤ部材８は、他端が被係止部材１４の一方の側の先端に設けられた第２の接続部としての連結穴２１に接続している。
しかし、本発明者による長年の研究調査の結果、第２のワイヤ部材８の他端を被係止部材１４の一方の側の先端に接続させる構成の場合、図４(b)、図５(c)に示したような、第１のフック部２０が管状係止部材１５における一方の側の端部に係止して、コイルばね９の付勢力による他方の側の方向への移動を阻止している状態において、第２のワイヤ部材８に対して、管状係止部材１５における一方の側の端部から離れる方向であって、第１のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力が加わると、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される位置に移動させられて、係止を解除され、被係止部材１４がコイルばね９の付勢力により第１のパイプ支柱１の内部を他方の側の方向に移動し、第１の管状連結部材３と第２の管状連結部材４とが嵌合されてしまい、折り畳んだ状態を保持できなくなる虞があることが判明した。
折り畳み式杖においては、保管時にパイプ支柱１、２同士を折り畳んだ状態でカバン等の収納用具に収納することが考えられる。折り畳んだパイプ支柱１、２が収納用具に収納されている他の物品や収納用具の壁面に当接して、上述したような、第２のワイヤ部材８に対して、管状係止部材１５における一方の側の端部から離れる方向であって、パイプ支柱の長手方向に対して垂直な方向に引っ張る力が加わる可能性は否定できない。 Next, in the connection structure of the foldable cane pipe strut described in Patent Document 1 shown in FIGS. 4 and 5, the other end of the second wire member 8 is one side of the locked member 14. It is connected to a connecting hole 21 as a second connecting portion provided at the tip.
However, as a result of many years of research and investigation by the present inventor, in the case of a configuration in which the other end of the second wire member 8 is connected to the tip of one side of the locked member 14, FIGS. 4 (b) and 5 (B) As shown in c), the first hook portion 20 is locked to the end portion of the tubular locking member 15 on one side to prevent the coil spring 9 from moving in the other side due to the urging force. In this state, the direction away from the one-sided end of the tubular locking member 15 with respect to the second wire member 8 and the direction perpendicular to the longitudinal direction of the first pipe column 1. When a pulling force is applied to, the first hook portion 20 is moved to a position where the tubular locking member 15 is unlocked from the one-sided end portion, and is unlocked and locked. The member 14 moves inside the first pipe column 1 in the direction of the other side due to the urging force of the coil spring 9, and the first tubular connecting member 3 and the second tubular connecting member 4 are fitted together. , It turned out that there is a risk that the folded state cannot be maintained.
In the case of a foldable cane, it is conceivable to store the pipe columns 1 and 2 in a storage tool such as a bag in a folded state during storage. One of the folded pipe columns 1 and 2 in the tubular locking member 15 with respect to the second wire member 8 as described above, with the folded pipe columns 1 and 2 abutting against the wall surface of another article or storage tool stored in the storage tool. It is undeniable that a pulling force may be applied in the direction away from the end on the side of the pipe in the direction perpendicular to the longitudinal direction of the pipe column.

また、図４、図５に示した特許文献１に記載の折り畳み式杖用パイプ支柱の接続構造においては、パイプ支柱１、２を折り畳む際、第２の管状連結部材４が第１のパイプ支柱１の長手方向に沿って第１の管状連結部材３から離れるように、相互のパイプ支柱１、２を引っ張り、コイルばね９の付勢力に抗して被係止部材１４を一方の側の方向に移動させれば、図５(c)に示すように、第２のフック部１９を管状係止部材１５における他方の側の端部に当接させたときに、被係止部材１４が第２のフック部１９とは反対側の辺における管状係止部材１５との接点２３を支点として回転し、第１のフック部２０が管状係止部材１５における一方の側の端部に係止して、コイルばね９の付勢力による他方の側の方向への移動を阻止することができる。
しかし、パイプ支柱１、２をすぐに折り畳もうとして、第２のワイヤ部材に対して、管状係止部材１５における一方の側の端部から離れる方向であって、第１のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力を加えると、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される位置に移動させられた状態で、コイルばね９の付勢力に抗して被係止部材１４を一方の側の方向に移動させられることが起こりうる。この場合、第２のフック部１９を管状係止部材１５における他方の側の端部に当接させても、被係止部材１４の先端には第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される方向の力がかかっているため、第２のフック部１９とは反対側の辺において管状係止部材１５との接点２３を支点とする被係止部材１４の回転が生じない。このため、第１のフック部２０が管状係止部材１５における一方の側の端部に係止せず、コイルばね９の付勢力による他方の側の方向への移動を阻止することができない。その結果、折り畳んだパイプ支柱１、２から手を離すと、コイルばね９の付勢力により第１のパイプ支柱１の内部を他方の側の方向に移動し、第１の管状連結部材３と第２の管状連結部材４とが嵌合されてしまい、折り畳んだ状態を保持することができない。 Further, in the connection structure of the foldable cane pipe column described in Patent Document 1 shown in FIGS. 4 and 5, when the pipe columns 1 and 2 are folded, the second tubular connecting member 4 is the first pipe column. The pipe columns 1 and 2 are pulled from each other so as to be separated from the first tubular connecting member 3 along the longitudinal direction of 1, and the locked member 14 is moved in one direction against the urging force of the coil spring 9. When the second hook portion 19 is brought into contact with the other end of the tubular locking member 15, as shown in FIG. 5 (c), the locked member 14 becomes the third. The contact point 23 with the tubular locking member 15 on the side opposite to the hook portion 19 of 2 is rotated as a fulcrum, and the first hook portion 20 is locked to the end portion on one side of the tubular locking member 15. Therefore, it is possible to prevent the coil spring 9 from moving in the other side due to the urging force.
However, in an attempt to immediately fold the pipe columns 1 and 2, the second wire member is in a direction away from one end of the tubular locking member 15, and the first pipe column 1 When a pulling force is applied in a direction perpendicular to the longitudinal direction, the first hook portion 20 is moved to a position where the tubular locking member 15 is released from being locked with the end portion on one side. It is possible that the locked member 14 can be moved in one direction against the urging force of the coil spring 9. In this case, even if the second hook portion 19 is brought into contact with the other end of the tubular locking member 15, the first hook portion 20 is attached to the tip of the locked member 14 to the tubular locking member 15. Since a force is applied in the direction in which the lock with the end on one side of the hook is released, the contact point 23 with the tubular locking member 15 is used as a fulcrum on the side opposite to the second hook portion 19. The locked member 14 does not rotate. Therefore, the first hook portion 20 does not lock on one end of the tubular locking member 15, and the urging force of the coil spring 9 cannot prevent the coil spring 9 from moving in the other side. As a result, when the hands are released from the folded pipe columns 1 and 2, the inside of the first pipe column 1 is moved toward the other side by the urging force of the coil spring 9, and the first tubular connecting member 3 and the first The tubular connecting member 4 of 2 is fitted, and the folded state cannot be maintained.

そこで、本発明者は、上記研究調査において判明した課題を解決すべく、試行錯誤した結果、パイプ支柱を折り畳んだ状態において、第２のワイヤ部材８に対して、管状係止部材１５における一方の側の端部から離れる方向であって、第１のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力が加わっても、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される位置に移動しない構成を着想し、本発明を導出するに至った。 Therefore, as a result of trial and error in order to solve the problems found in the above research and investigation, the present inventor has made one of the tubular locking members 15 with respect to the second wire member 8 in the state where the pipe column is folded. Even if a pulling force is applied in a direction away from the side end portion and in a direction perpendicular to the longitudinal direction of the first pipe column 1, the first hook portion 20 is on one side of the tubular locking member 15. We have come up with the idea of a configuration that does not move to a position where the lock with the end of the pipe is released, and have derived the present invention.

本発明の折り畳み式杖用パイプ支柱の接続構造は、第ｎ番目のパイプ支柱と、第ｎ＋１番目のパイプ支柱と、第ｎ番目のパイプ支柱における一方の側の端部に設けられていて、他方の側に向かって開口径が狭くなるようにテーパのついた内周部を有する第１の筒状部と、ｎ番目のパイプ支柱の内径よりも小さな外径を有する第２の筒状部とを備えた第１の管状連結部材と、第ｎ＋１番目のパイプ支柱における他方の側の端部に設けられていて、第１の管状連結部材の内周部に嵌合可能な外周部を備えた第２の管状連結部材と、第１の管状連結部材における他方の側の端部に設けられた管状係止部材と、一端に管状係止部材における一方の側の端部に係止可能且つ管状係止部材の内部を挿通可能な第１のフック部、他端に管状係止部材の内部を挿通不能な第２のフック部を有し、第１のフック部における管状係止部材と当接する辺の先端から一方の側の先端に向かって幅が狭くなるように傾斜した、細長板状の被係止部材と、一端が第２のフック部に設けられた第１の接続部に接続する第１のワイヤ部材と、他端が被係止部材における所定位置に設けられた第２の接続部に接続する第２のワイヤ部材と、第ｎ番目のパイプ支柱の内部において、一端が第２の筒状部を遊嵌した状態で、第１の筒状部と当接し第１のワイヤ部材を他方の側の方向に付勢するコイルばねと、第１のワイヤ部材の他端と接続するとともに、コイルばねと当接してコイルばねの他方の側の方向への移動を規制する第１の移動規制部材と、第２のワイヤ部材の一端と接続するとともに、第ｎ＋１番目のパイプ支柱の第２の管状連結部材における一方の側の端部に当接して第２のワイヤ部材の他方の側の方向への移動を規制する第２の移動規制部材と、を有し、（第１の管状連結部材の）内周部に（第２の管状連結部材の）外周部を嵌合させたときに、被係止部材が、第１のフック部による管状係止部材における一方の側の端部との係止を解除されて、コイルばねの付勢力により第ｎ番目のパイプ支柱の内部を他方の側の方向に移動し、第１の管状連結部材と第２の管状連結部材との嵌合状態が保持され、第２の管状連結部材が第１の管状連結部材から離れるように、相互のパイプ支柱を引っ張り、コイルばねの付勢力に抗して被係止部材を一方の側の方向に移動させたときに、第１のフック部が管状係止部材における一方の側の端部に係止して、コイルばねの付勢力による他方の側の方向への移動を阻止するように構成された折り畳み式杖用パイプ支柱の接続構造において、第２のフック部が、管状係止部材における他方の側の端部に当接することなく、第２の筒状部における他方の側の端部に当接することができるように形成され、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部が、第２の筒状部の他方の側の端部における第２のフック部の当接点と（第１の管状連結部材の）内周部の一方の側の端縁とを結ぶ第１の仮想直線と、被係止部材の長手方向中央位置を通る第２の仮想直線との交点位置近傍から、第１の仮想直線に対し（第１の管状連結部材の）内周部の中心側の方向に３．８度傾斜した第３の仮想直線と第２の仮想直線との交点位置までの、第２の仮想直線上の所定位置に設けられている。 The connection structure of the foldable cane pipe strut of the present invention is provided at one end of the nth pipe strut, the n + 1st pipe strut, and the nth pipe strut, and the other. A first tubular portion having an inner peripheral portion tapered so that the opening diameter narrows toward the side of the pipe, and a second tubular portion having an outer diameter smaller than the inner diameter of the nth pipe column. A first tubular connecting member provided with the above, and an outer peripheral portion provided at the other end of the n + 1th pipe column and fitted to the inner peripheral portion of the first tubular connecting member. A second tubular connecting member, a tubular locking member provided at the other end of the first tubular connecting member, and a tubular locking member that can be locked and tubular to one end of the tubular locking member at one end. It has a first hook portion that can be inserted through the inside of the locking member and a second hook portion that cannot insert the inside of the tubular locking member at the other end, and comes into contact with the tubular locking member in the first hook portion. It connects to an elongated plate-shaped locked member that is inclined so that the width narrows from the tip of the side toward the tip of one side, and one end to a first connecting portion provided on the second hook portion. Inside the first wire member, the second wire member whose other end is connected to the second connecting portion provided at a predetermined position in the locked member, and the nth pipe column, one end is the second. With the tubular portion of the above loosely fitted, the coil spring that comes into contact with the first tubular portion and urges the first wire member in the direction of the other side is connected to the other end of the first wire member. At the same time, the first movement restricting member that comes into contact with the coil spring and restricts the movement of the coil spring in the other side is connected to one end of the second wire member, and the n + 1th pipe column is connected. It has a second movement restricting member that abuts on one end of the two tubular connecting members and restricts the movement of the second wire member in the other side direction (the first tubular). When the outer peripheral portion (of the second tubular connecting member) is fitted to the inner peripheral portion (of the connecting member), the locked member is the one-sided end of the tubular locking member by the first hook portion. The urging force of the coil spring moves the inside of the nth pipe column toward the other side, and the first tubular connecting member and the second tubular connecting member are fitted together. Pulling each other's pipe struts so that the state is maintained and the second tubular connecting member separates from the first tubular connecting member, the locked member is unilaterally oriented against the urging force of the coil spring. When moved, the first hook portion locks to one end of the tubular locking member and the coil In a foldable cane pipe strut connection structure configured to prevent the urging force of the ridge from moving in the other side, the second hook is the other end of the tubular locking member. A second wire member of the locked member to which the other end of the second wire member is connected, which is formed so as to be able to contact the other end of the second tubular portion without contacting the A second connecting portion connects the contact point of the second hook portion at the other end of the second tubular portion with the one-sided edge of the inner circumference (of the first tubular connecting member). From the vicinity of the intersection position of the virtual straight line 1 and the second virtual straight line passing through the central position in the longitudinal direction of the locked member, the center of the inner peripheral portion (of the first tubular connecting member) with respect to the first virtual straight line. It is provided at a predetermined position on the second virtual straight line up to the intersection position of the third virtual straight line and the second virtual straight line inclined by 3.8 degrees in the lateral direction.

折り畳み式杖用パイプ支柱の接続構造に関し、第２のフック部が、管状係止部材における他方の側の端部に当接することなく、第２の筒状部における他方の側の端部に当接することができるように形成された構成においては、第２のワイヤ部材に対して、管状係止部材における一方の側の端部から離れる方向であって、第ｎ番目のパイプ支柱の長手方向に対して垂直な方向に引っ張る力が加わったときに、被係止部材には、第２の筒状部の他方の側の端部における第２のフック部の当接点を支点とした、第１のフック部が管状係止部材における一方の側の端部との係止が解除される側に移動する力を受ける。
そして、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部を設ける位置と、第２の筒状部の他方の側の端部における第２のフック部の当接点との距離が長くなるにしたがって、第ｎ番目のパイプ支柱の長手方向に対して垂直な方向に引っ張る力が加わったときにおける、被係止部材の、第２の筒状部の他方の側の端部における第２のフック部の当接点を支点とした、第１のフック部が管状係止部材における一方の側の端部との係止が解除される側への移動量が増大し、第１のフック部が管状係止部材における一方の側の端部との係止が解除される位置に移動されてしまい易くなる。 Regarding the connection structure of the foldable cane pipe column, the second hook portion hits the other side end portion of the second tubular portion without contacting the other side end portion of the tubular locking member. In the configuration formed so as to be in contact with the second wire member, the direction away from the one-sided end of the tubular locking member, in the longitudinal direction of the nth pipe column. When a pulling force is applied in the direction perpendicular to the object, the locked member has a first fulcrum with the contact point of the second hook portion at the other end of the second tubular portion as a fulcrum. The hook portion of the tubular locking member receives a force to move to the side where the locking with the end on one side of the tubular locking member is released.
Then, in the locked member, the position where the second connecting portion to which the other end of the second wire member is connected is provided, and the contact between the second hook portion at the other end of the second tubular portion. The other side of the second tubular portion of the locked member when a pulling force is applied in a direction perpendicular to the longitudinal direction of the nth pipe column as the distance from the contact increases. The amount of movement of the first hook portion from the contact point of the second hook portion at the end portion of the tubular locking member to the side where the locking with the end portion on one side is released increases. , The first hook portion is likely to be moved to a position where the locking with the end portion on one side of the tubular locking member is released.

しかるに、本発明の折り畳み式杖用パイプ支柱の接続構造のように、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部が、第２の筒状部の他方の側の端部における第２のフック部の当接点と（第１の管状連結部材の）内周部の一方の側の端縁とを結ぶ第１の仮想直線と、被係止部材の長手方向中央位置を通る第２の仮想直線との交点位置近傍から、第１の仮想直線に対し（第１の管状連結部材の）内周部の中心側の方向に３．８度傾斜した第３の仮想直線と第２の仮想直線との交点位置までの、第２の仮想直線上の所定位置に設けられている構成にすれば、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳んだ状態において、第２のワイヤ部材に対して、管状係止部材における一方の側の端部から離れる方向であって、第ｎ番目のパイプ支柱の長手方向に対して垂直な方向に引っ張る力が加わっても、被係止部材の、第２の筒状部の他方の側の端部における第２のフック部の当接点を支点とした、第１のフック部が管状係止部材における一方の側の端部との係止が解除される側への移動量が低減され、第１のフック部が管状係止部材における一方の側の端部との係止が解除される位置に移動しない。
このため、本発明の折り畳み式杖用パイプ支柱の接続構造によれば、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳んだ状態を確実に保持でき、また、相互のパイプ支柱を第ｎ番目のパイプ支柱の長手方向に沿って引っ張ることなく、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳み、第２のフック部を管状係止部材における他方の側の端部に当接させた場合において手を離しても、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳んだ状態を保持することができる。 However, as in the connection structure of the folding cane pipe column of the present invention, the second connecting portion to which the other end of the second wire member of the locked member is connected is the other of the second tubular portion. A first virtual straight line connecting the contact point of the second hook portion at the end portion on the side of the sword and the edge of one side of the inner peripheral portion (of the first tubular connecting member), and the length of the locked member. A third tilted 3.8 degrees from the vicinity of the intersection with the second virtual straight line passing through the central position in the direction toward the center of the inner peripheral portion (of the first tubular connecting member) with respect to the first virtual straight line. If the configuration is provided at a predetermined position on the second virtual straight line up to the intersection position of the virtual straight line and the second virtual straight line, the nth pipe strut and the n + 1th pipe strut can be provided. In the folded state, a force that pulls the second wire member in a direction away from one end of the tubular locking member and in a direction perpendicular to the longitudinal direction of the nth pipe column. Is added, the first hook portion of the locked member is one of the tubular locking members, with the contact point of the second hook portion at the other end of the second tubular portion as a fulcrum. The amount of movement to the side where the lock with the end on the side is released is reduced, and the first hook portion moves to the position where the lock with the end on one side of the tubular locking member is released. do not do.
Therefore, according to the connection structure of the foldable cane pipe struts of the present invention, the nth pipe struts and the n + 1th pipe struts can be reliably held in a folded state, and the mutual pipe struts can be held. The nth pipe strut and the n + 1th pipe strut are folded without pulling along the longitudinal direction of the nth pipe strut, and the second hook portion is the other end of the tubular locking member. The nth pipe strut and the n + 1th pipe strut can be kept in a folded state even if the hand is released when the pipe strut is brought into contact with the pipe.

また、折り畳み式杖用パイプ支柱の接続構造に関し、第１のワイヤ部材の一端が第２のフック部に設けられた第１の接続部に接続し、第２のフック部が細長板状の被係止部材の長手方向に対して垂直な方向に延びている一方、第２のワイヤ部材の他端が細長板状の被係止部材の長手方向中央位置を通る第２の仮想直線上の所定位置に設けられた第２の接続部に接続している構成においては、第１の接続部と第２の接続部とを第ｎ番目のパイプ支柱の長手方向中央位置を通る仮想直線上に位置するようにしたときに、細長板状の被係止部材は傾斜する。
そして、被係止部材に対する第１のワイヤ部材の接続位置と、被係止部材に対する第２のワイヤ部材の接続位置とが近くなるにしたがって、被係止部材が管状係止部材に当接していない状態でコイルばねの付勢力により、第１のワイヤ部材、第２のワイヤ部材が引っ張られて、被係止部材における第１のワイヤ部材を接続する第１の接続部と第２のワイヤ部材を接続する第２の接続部とが第ｎ番目のパイプ支柱の長手方向中央位置を通る仮想直線上に位置したときの、被係止部材の傾斜が大きくなる。
被係止部材の傾斜が大きくなり過ぎると、被係止部材がコイルばねの付勢力により第ｎ番目のパイプ支柱の内部を他方の側の方向に移動し、コイルばねの中に入り込んだ状態において、第１のフック部がコイルばねに圧接し、さらにはコイルばねの隙間に入り込んで、コイルばねを大きく変形させてしまう。その結果、コイルばねによる第１の管状連結部材と第２の管状連結部材とが連結した状態を保持する力が弱められて、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とが連結した状態での杖の使用に悪影響を与える虞がある。 Further, regarding the connection structure of the foldable cane pipe column, one end of the first wire member is connected to the first connection portion provided in the second hook portion, and the second hook portion is an elongated plate-shaped cover. A predetermined position on a second virtual straight line extending in a direction perpendicular to the longitudinal direction of the locking member, while the other end of the second wire member passes through the central position in the longitudinal direction of the elongated plate-shaped locked member. In the configuration in which the first connecting portion and the second connecting portion are connected to the second connecting portion provided at the position, the first connecting portion and the second connecting portion are positioned on a virtual straight line passing through the central position in the longitudinal direction of the nth pipe column. When this is done, the elongated plate-shaped locked member is tilted.
Then, as the connection position of the first wire member with respect to the locked member and the connection position of the second wire member with respect to the locked member become closer, the locked member comes into contact with the tubular locking member. The first wire member and the second wire member are pulled by the urging force of the coil spring in the absence state, and the first connecting portion and the second wire member connecting the first wire member in the locked member are connected. When the second connecting portion for connecting the wires is located on a virtual straight line passing through the central position in the longitudinal direction of the nth pipe column, the inclination of the locked member becomes large.
When the inclination of the locked member becomes too large, the locked member moves in the direction of the other side inside the nth pipe column due to the urging force of the coil spring, and enters the coil spring. , The first hook portion presses against the coil spring and further enters the gap of the coil spring, causing the coil spring to be significantly deformed. As a result, the force for holding the first tubular connecting member and the second tubular connecting member connected by the coil spring is weakened, and the nth pipe strut and the n + 1st pipe strut are connected. May adversely affect the use of the cane in the condition.

しかるに、本発明の折り畳み式杖用パイプ支柱の接続構造のように、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部が、第２の筒状部の他方の側の端部における第２のフック部の当接点と（第１の管状連結部材の）内周部の一方の側の端縁とを結ぶ第１の仮想直線と、被係止部材の長手方向中央位置を通る第２の仮想直線との交点位置近傍から、第１の仮想直線に対し（第１の管状連結部材の）内周部の中心側の方向に３．８度傾斜した第３の仮想直線と第２の仮想直線との交点位置までの、第２の仮想直線上の所定位置に設けられている構成にすれば、被係止部材に対する第１のワイヤ部材の接続位置と、被係止部材に対する第２のワイヤ部材の接続位置とを離すことができ、被係止部材が管状係止部材に当接していない状態における、被係止部材の傾斜を抑えることができる。
その結果、被係止部材がコイルばねの付勢力により第ｎ番目のパイプ支柱の内部を他方の側の方向に移動し、コイルばねの中に入り込んだ状態において、第１のフック部によるコイルばねへの圧接や、コイルばねの変形を抑えることができ、コイルばねによる、強い力での第１の管状連結部材と第２の管状連結部材とが連結した状態が保持され、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱との連結が安定した状態で杖を使用することができる。 However, as in the connection structure of the foldable cane pipe column of the present invention, the second connecting portion to which the other end of the second wire member of the locked member is connected is the other of the second tubular portion. A first virtual straight line connecting the contact point of the second hook portion at the end portion on the side of the sword and the edge of one side of the inner peripheral portion (of the first tubular connecting member), and the length of the locked member. A third tilted 3.8 degrees from the vicinity of the intersection with the second virtual straight line passing through the central position in the direction toward the center of the inner peripheral portion (of the first tubular connecting member) with respect to the first virtual straight line. If the configuration is provided at a predetermined position on the second virtual straight line up to the intersection position of the virtual straight line and the second virtual straight line, the connection position of the first wire member with respect to the locked member and the connection position of the first wire member. The connection position of the second wire member with respect to the locked member can be separated, and the inclination of the locked member can be suppressed when the locked member is not in contact with the tubular locking member.
As a result, in a state where the locked member moves in the direction of the other side inside the nth pipe column by the urging force of the coil spring and enters the coil spring, the coil spring by the first hook portion It is possible to suppress pressure welding to the coil spring and deformation of the coil spring, and the state in which the first tubular connecting member and the second tubular connecting member are connected by the coil spring with a strong force is maintained, and the nth pipe. The cane can be used in a state where the connection between the support column and the n + 1th pipe column is stable.

なお、本発明の折り畳み式杖用パイプ支柱の接続構造のように、第２のフック部を、管状係止部材における他方の側の端部に当接することなく、第２の筒状部における他方の側の端部に当接することができるように形成された構成にすれば、第１のフック部が管状係止部材における一方の側の端部に係止して、コイルばねの付勢力による他方の側の方向への移動を阻止するようにするために、第２の管状連結部材が第１の管状連結部材から離れる方向に、相互のパイプ支柱を引っ張り、コイルばねの付勢力に抗して被係止部材を一方の側の方向に移動させたときに、第２のフック部が管状係止部材における他方の側の端部には当接せず、管状係止部材が第１の管状連結部材の長手方向に沿う方向に強い力を受けずに済むため、経年的なパイプ支柱の折り畳みの繰り返しによる経年使用による第１の管状連結部材からの管状係止部材の離脱を防止できる。 It should be noted that, as in the connection structure of the foldable cane pipe column of the present invention, the second hook portion does not abut on the other end of the tubular locking member, and the other in the second tubular portion. If the configuration is formed so as to be able to abut on the end portion on the side of the pipe, the first hook portion is locked to the end portion on one side of the tubular locking member by the urging force of the coil spring. In order to prevent the movement in the direction of the other side, the second tubular connecting member pulls each other's pipe struts away from the first tubular connecting member to resist the urging force of the coil spring. When the locked member is moved in the direction of one side, the second hook portion does not abut on the other end of the tubular locking member, and the tubular locking member is the first. Since it is not necessary to receive a strong force in the direction along the longitudinal direction of the tubular connecting member, it is possible to prevent the tubular locking member from being detached from the first tubular connecting member due to aged use due to repeated folding of the pipe column over time.

また、本発明の折り畳み式杖用パイプ支柱の接続構造においては、好ましくは、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部が、上記第１の仮想直線と上記第２の仮想直線との交点位置に設けられている。
このようにすれば、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳んだ状態において、第２のワイヤ部材に対して、管状係止部材における一方の側の端部から離れる方向であって、第ｎ番目のパイプ支柱の長手方向に対して垂直な方向に引っ張る力が加わったときの、被係止部材の、第２の筒状部の他方の側の端部における第２のフック部の当接点を支点とした、第１のフック部が管状係止部材における一方の側の端部との係止が解除される側への移動量を極力小さくすることができ、第１のフック部が管状係止部材における一方の側の端部との係止が解除される位置に、より一層移動し難くなる。
その結果、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳んだ状態をより確実に保持でき、また、相互のパイプ支柱を第ｎ番目のパイプ支柱の長手方向に沿って引っ張ることなくパイプ支柱同士を折り畳み、第２のフック部を管状係止部材における他方の側の端部に当接させた場合において手を離しても、パイプ支柱を折り畳んだ状態をより確実に保持することができる。 Further, in the connection structure of the foldable cane pipe column of the present invention, preferably, the second connecting portion to which the other end of the second wire member of the locked member is connected is the first virtual straight line. It is provided at the intersection position between the above-mentioned second virtual straight line and the above-mentioned second virtual straight line.
In this way, in the state where the nth pipe strut and the n + 1th pipe strut are folded, the second wire member is separated from the end on one side of the tubular locking member. A second end of the locked member at the other end of the second tubular portion when a pulling force is applied in a direction perpendicular to the longitudinal direction of the nth pipe column. With the contact point of the hook portion as a fulcrum, the amount of movement of the first hook portion to the side where the locking with the end portion on one side of the tubular locking member is released can be minimized, and the first It becomes more difficult to move the hook portion of the tubular locking member to a position where the locking with the end portion on one side of the tubular locking member is released.
As a result, the folded state of the nth pipe strut and the n + 1th pipe strut can be more reliably held, and the mutual pipe strut is not pulled along the longitudinal direction of the nth pipe strut. When the pipe columns are folded and the second hook portion is brought into contact with the other end of the tubular locking member, the folded state of the pipe columns can be more reliably maintained even if the hands are released. it can.

また、本発明の折り畳み式杖用パイプ支柱の接続構造においては、好ましくは、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部が、上記第１の仮想直線に対し（第１の管状連結部材の）内周部の中心側の方向に３．８度傾斜した第３の仮想直線と、上記第２の仮想直線との交点位置に設けられている。
このようにすれば、被係止部材に対する第１のワイヤ部材の接続位置と、被係止部材に対する第２のワイヤ部材の接続位置とを極力離すことができ、被係止部材が管状係止部材に当接していない状態において、被係止部材の傾斜をより一層抑えることができる。
その結果、被係止部材がコイルばねの付勢力により第ｎ番目のパイプ支柱の内部を他方の側の方向に移動し、コイルばねの中に入り込んだ状態において、第１のフック部によるコイルばねへの圧接や、コイルばねの変形をより一層抑えることができ、コイルばねによる、より一層強い力での第１の管状連結部材と第２の管状連結部材とが連結した状態が保持され、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱との連結がより一層安定した状態で杖を使用することができる。 Further, in the connection structure of the foldable cane pipe column of the present invention, preferably, the second connecting portion to which the other end of the second wire member of the locked member is connected is the first virtual straight line. It is provided at the intersection position of the third virtual straight line inclined by 3.8 degrees toward the center of the inner peripheral portion (of the first tubular connecting member) and the second virtual straight line.
By doing so, the connection position of the first wire member with respect to the locked member and the connection position of the second wire member with respect to the locked member can be separated as much as possible, and the locked member is tubular locked. The inclination of the locked member can be further suppressed in a state where the member is not in contact with the member.
As a result, in a state where the locked member moves in the direction of the other side inside the nth pipe column by the urging force of the coil spring and enters the coil spring, the coil spring by the first hook portion It is possible to further suppress pressure welding to the coil spring and deformation of the coil spring, and the state in which the first tubular connecting member and the second tubular connecting member are connected by the coil spring with a stronger force is maintained. The cane can be used in a state where the connection between the nth pipe strut and the n + 1st pipe strut is more stable.

従って、本発明によれば、パイプ支柱を折り畳んだときにパイプ支柱同士が引き付け合わないようにし、手を離しても折り畳んだ状態が保持でき、さらに、パイプ支柱が引っ張られる方向如何によらず、パイプ支柱を折り畳んだ状態を確実に保持可能な折り畳み式杖用パイプ支柱の接続構造が得られる。 Therefore, according to the present invention, when the pipe struts are folded, the pipe struts are prevented from attracting each other, the folded state can be maintained even if the hands are released, and the pipe struts are pulled regardless of the direction in which they are pulled. A connection structure for a foldable cane pipe strut that can reliably hold the folded state of the pipe strut can be obtained.

なお、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部を、上記第２の仮想直線上における、上記第１の仮想直線に対し（第１の管状連結部材の）内周部の中心側の方向に３．８度を上回って傾斜した仮想直線と、上記第２の仮想直線との交点位置に設けると、第２のワイヤ部材に対して、管状係止部材における一方の側の端部から離れる方向であって、第ｎ番目のパイプ支柱の長手方向に対して垂直な方向に引っ張る力が加わったときに、第１のフック部が管状係止部材における一方の側の端部との係止が解除される位置に移動して、係止が解除され、被係止部材がコイルばねの付勢力により第ｎ番目のパイプ支柱の内部を他方の側の方向に移動し、第１の管状連結部材と第２の管状連結部材とが嵌合されてしまい、折り畳んだ状態を保持できなくなる。 In the locked member, the second connecting portion to which the other end of the second wire member is connected is attached to the first virtual straight line on the second virtual straight line (first tubular connecting member). When provided at the intersection of the virtual straight line inclined by more than 3.8 degrees in the direction toward the center of the inner peripheral portion and the second virtual straight line, the tubular locking is applied to the second wire member. When a pulling force is applied in the direction away from one end of the member and in the direction perpendicular to the longitudinal direction of the nth pipe strut, the first hook portion is in the tubular locking member. It moves to the position where the lock with the end on one side is released, the lock is released, and the locked member moves inside the nth pipe column by the urging force of the coil spring to the other side. It moves in the direction, and the first tubular connecting member and the second tubular connecting member are fitted to each other, and the folded state cannot be maintained.

また、被係止部材における、第２のワイヤ部材の他端が接続する第２の接続部を、上記第２の仮想直線上における、上記第１の仮想直線と上記第２の仮想直線との交点位置近傍よりもさらに第２のフック部に近い側の所定位置に設けると、被係止部材が管状係止部材に当接していない状態において、被係止部材の傾斜を抑えることができず、コイルばねの中に入り込んだ状態において、第１のフック部がコイルばねに圧接し、さらにはコイルばねの隙間に入り込んで、コイルばねを大きく変形させてしまい、コイルばねによる第１の管状連結部材と第２の管状連結部材とが連結した状態を保持する力が弱められて、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とが連結した状態での杖の使用に悪影響を与える虞が大きくなる。 Further, the second connecting portion of the locked member to which the other end of the second wire member is connected is formed by connecting the first virtual straight line and the second virtual straight line on the second virtual straight line. If it is provided at a predetermined position closer to the second hook portion than near the intersection position, the inclination of the locked member cannot be suppressed in a state where the locked member is not in contact with the tubular locking member. , In the state of being inserted into the coil spring, the first hook portion presses against the coil spring and further enters the gap of the coil spring, causing the coil spring to be greatly deformed, and the first tubular connection by the coil spring. The force to hold the member and the second tubular connecting member connected may be weakened, which may adversely affect the use of the cane in the state where the nth pipe column and the n + 1th pipe column are connected. Becomes larger.

以下、本発明の実施形態について、図面を用いて説明する。
第１実施形態
図１は本発明の第１実施形態にかかる折り畳み式杖用パイプ支柱の接続構造の要部構成を概略的に示す正面図である。なお、図１では、便宜上、第１のフック部が管状係止部材における一方の側の端部に係止した状態で示してある。また、本発明の各実施形態においては、図４及び図５に示した折り畳み式杖用パイプ支柱の接続構造と構成が略同じ部材は、各実施形態の図に示されているといないとにかかわらず、同じ符号を付して説明することとする。
本実施形態の折り畳み式杖用パイプ支柱の接続構造では、第２のフック部１９が、一方の側の辺に、管状係止部材１５における他方の側の端部に当接することなく、第２の筒状部３ｂにおける他方の側の端部に当接することができるように形成された突起部１９ａを有している。
また、被係止部材１４における、第２のワイヤ部材８（図１において図示省略）の他端が接続する第２の接続部としての連結穴２１’が、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａと（第１の管状連結部材３の）内周部３ａ１の一方の側の端縁Ｂとを結ぶ第１の仮想直線Ｌ１と、被係止部材１４の長手方向中央位置を通る第２の仮想直線Ｌ２との交点Ｃの位置に設けられている。そして、第２のワイヤ部材８（図１において図示省略）の他端は、連結穴２１ではなく、連結穴２１’に接続している。
また、被係止部材１４は、第１のフック部２０が設けられている側とは反対側の辺が、一方の側の先端から、連結穴２１’よりも先端側の所定位置（例えば、第１の仮想直線Ｌ１と交差する位置近傍）にかけて被係止部材１４の長手方向の幅が細くなるように、加工されており、これによって、第１のフック部２０が管状係止部材１５における一方の側の端部との係止を解除する際に、連結穴２１’に接続したワイヤ部材８が管状係止部材１５と被係止部材１４との間に挟まって係止解除に支障が生じることを未然に防いでいる。
その他の構成は、図４及び図５を用いて説明した折り畳み式杖用パイプ支柱の接続構造と略同じである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1st Embodiment FIG. 1 is a front view schematically showing the main part structure of the connection structure of the folding cane pipe column which concerns on 1st Embodiment of this invention. Note that, for convenience, FIG. 1 shows a state in which the first hook portion is locked to one end of the tubular locking member. Further, in each embodiment of the present invention, members having substantially the same connection structure and configuration as the foldable cane pipe columns shown in FIGS. 4 and 5 are not shown in the drawings of each embodiment. Regardless, the same reference numerals will be given for explanation.
In the foldable cane pipe strut connection structure of the present embodiment, the second hook portion 19 does not abut on one side of the tubular locking member 15 and does not abut on the other end of the tubular locking member 15. It has a protrusion 19a formed so as to come into contact with the other end of the tubular portion 3b of the above.
Further, the connecting hole 21'as the second connecting portion to which the other end of the second wire member 8 (not shown in FIG. 1) of the locked member 14 is connected is the other of the second tubular portion 3b. A first virtual straight line L1 connecting the contact point A of the second hook portion 19 at the end portion on the side of the wire and the end edge B on one side of the inner peripheral portion 3a1 (of the first tubular connecting member 3). It is provided at the position of the intersection C with the second virtual straight line L2 passing through the central position in the longitudinal direction of the locked member 14. The other end of the second wire member 8 (not shown in FIG. 1) is connected not to the connecting hole 21 but to the connecting hole 21'.
Further, in the locked member 14, the side opposite to the side on which the first hook portion 20 is provided is at a predetermined position (for example,) from the tip of one side to the tip side of the connecting hole 21'. The locked member 14 is processed so that the width in the longitudinal direction becomes narrower toward the position where it intersects with the first virtual straight line L1), whereby the first hook portion 20 is formed in the tubular locking member 15. When releasing the lock with the end on one side, the wire member 8 connected to the connecting hole 21'is sandwiched between the tubular locking member 15 and the locked member 14, which hinders the unlocking. It prevents it from happening.
Other configurations are substantially the same as the connection structure of the folding cane pipe column described with reference to FIGS. 4 and 5.

折り畳み式杖用パイプ支柱の接続構造に関し、第２のフック部１９が、管状係止部材１５における他方の側の端部に当接することなく、第２の筒状部３ｂにおける他方の側の端部に当接することができるように形成された構成においては、第２のワイヤ部材８に対して、管状係止部材１５における一方の側の端部から離れる方向であって、第ｎ番目のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力が加わったときに、被係止部材１４には、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａを支点とした、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される側に移動する力を受ける。
そして、被係止部材１４における、第２のワイヤ部材８の他端が接続する第２の接続部としての連結穴を設ける位置と、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａとの距離が長くなるにしたがって、第ｎ番目のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力が加わったときに、被係止部材１４の、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａを支点とした、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される側への移動量が増大し、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される位置に移動されてしまい易くなる。 With respect to the connection structure of the foldable cane pipe column, the second hook portion 19 does not abut on the other side end of the tubular locking member 15, but the other side end of the second tubular portion 3b. In the configuration formed so as to be in contact with the portion, the nth pipe in the direction away from the one-sided end of the tubular locking member 15 with respect to the second wire member 8. When a pulling force is applied in the direction perpendicular to the longitudinal direction of the support column 1, the locked member 14 has a second hook portion 19 at the other end of the second tubular portion 3b. The first hook portion 20 with the contact point A as a fulcrum receives a force to move the tubular locking member 15 to the side where the locking with the end portion on one side is released.
Then, at a position of the locked member 14 where a connecting hole is provided as a second connecting portion to which the other end of the second wire member 8 is connected, and at the other end of the second tubular portion 3b. As the distance of the second hook portion 19 from the contact point A increases, when a pulling force is applied in the direction perpendicular to the longitudinal direction of the nth pipe column 1, the locked member 14 , The first hook portion 20 is the one-sided end portion of the tubular locking member 15 with the contact point A of the second hook portion 19 at the other end portion of the second tubular portion 3b as a fulcrum. The amount of movement to the side where the lock with and is released increases, and the first hook portion 20 is moved to the position where the lock with the end portion on one side of the tubular locking member 15 is released. It will be easier.

しかるに、本実施形態の折り畳み式杖用パイプ支柱の接続構造によれば、被係止部材１４における、第２のワイヤ部材８の他端が接続する第２の接続部としての連結穴２１’が、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａと（第１の管状連結部材３の）内周部３ａ１の一方の側の端縁Ｂとを結ぶ第１の仮想直線Ｌ１と、被係止部材１４の長手方向中央位置を通る第２の仮想直線Ｌ２との交点Ｃの位置に設けられている構成としたので、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態において、第２のワイヤ部材８に対して、管状係止部材１５における一方の側の端部から離れる方向であって、第ｎ番目のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力が加わっても、被係止部材１４の、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａを支点とした、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される側への移動量が低減され、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される位置に移動しない。
このため、本実施形態の折り畳み式杖用パイプ支柱の接続構造によれば、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態を確実に保持でき、また、相互のパイプ支柱１、２を第ｎ番目のパイプ支柱１の長手方向に沿って引っ張ることなく、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳み、第２のフック部１９を管状係止部材１５における他方の側の端部に当接させた場合において手を離しても、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態を保持することができる。 However, according to the connection structure of the foldable cane pipe column of the present embodiment, the connecting hole 21'as the second connecting portion to which the other end of the second wire member 8 of the locked member 14 is connected is provided. , The contact point A of the second hook portion 19 at the other end of the second tubular portion 3b and the one-sided edge B of the inner peripheral portion 3a1 (of the first tubular connecting member 3). Since the configuration is provided at the intersection C of the first virtual straight line L1 connecting the two virtual straight lines L1 and the second virtual straight line L2 passing through the central position in the longitudinal direction of the locked member 14, the nth pipe support column is provided. In a state where the 1st and the n + 1st pipe columns 2 are folded, the nth pipe is in a direction away from the end on one side of the tubular locking member 15 with respect to the second wire member 8. Even if a pulling force is applied in a direction perpendicular to the longitudinal direction of the support column 1, the contact point of the second hook portion 19 at the other end of the second tubular portion 3b of the locked member 14. The amount of movement of the first hook portion 20 with A as a fulcrum to the side where the locking with the end portion on one side of the tubular locking member 15 is released is reduced, and the first hook portion 20 is tubular. The locking member 15 does not move to a position where the locking with one end is released.
Therefore, according to the connection structure of the foldable cane pipe struts of the present embodiment, the nth pipe struts 1 and the n + 1st pipe struts 2 can be reliably held in a folded state, and can be mutually maintained. Without pulling the pipe columns 1 and 2 along the longitudinal direction of the nth pipe column 1, the nth pipe column 1 and the n + 1th pipe column 2 are folded, and the second hook portion 19 is tubular. Even if the hand is released when the locking member 15 is brought into contact with the other end, the nth pipe column 1 and the n + 1th pipe column 2 can be maintained in a folded state. ..

しかも、第２の接続部としての連結穴２１’が、上記交点Ｃの位置に設けられている構成にしたので、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態において、第２のワイヤ部材８に対して、管状係止部材１５における一方の側の端部から離れる方向であって、第ｎ番目のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力が加わったときの、被係止部材１４の、第２の筒状部の他方の側の端部における第２のフック部の当接点を支点とした、第１のフック部が管状係止部材における一方の側の端部との係止が解除される側への移動量を極力小さくすることができ、第１のフック部２０が管状係止部材１５における一方の側の端部との係止が解除される位置に、より一層移動し難くなる。
その結果、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態をより確実に保持でき、また、相互のパイプ支柱１、２を第ｎ番目のパイプ支柱１の長手方向に沿って引っ張ることなくパイプ支柱１、２同士を折り畳み、第２のフック部１９を管状係止部材１５における他方の側の端部に当接させた場合において手を離しても、パイプ支柱１、２を折り畳んだ状態をより確実に保持することができる。 Moreover, since the connecting hole 21'as the second connecting portion is provided at the position of the intersection C, the nth pipe column 1 and the n + 1th pipe column 2 are folded. A force that pulls the second wire member 8 away from one end of the tubular locking member 15 in a direction perpendicular to the longitudinal direction of the nth pipe column 1. The first hook portion of the locked member 14 with the contact point of the second hook portion at the other end of the second tubular portion as the fulcrum is the tubular locking member. The amount of movement to the side where the locking with the one-sided end is released can be minimized, and the first hook portion 20 engages with the one-sided end of the tubular locking member 15. It becomes even more difficult to move to the position where the stop is released.
As a result, the state in which the nth pipe column 1 and the n + 1th pipe column 2 are folded can be more reliably held, and the mutual pipe columns 1 and 2 can be held in the longitudinal direction of the nth pipe column 1. Even if the pipe columns 1 and 2 are folded without being pulled along the pipe and the second hook portion 19 is brought into contact with the other end of the tubular locking member 15, the pipe column 1 is released. It is possible to more reliably hold the folded state of 2.

また、折り畳み式杖用パイプ支柱の接続構造に関し、第１のワイヤ部材７の一端が第２のフック部１９に設けられた第１の接続部に接続し、第２のフック部１９が細長板状の被係止部材１４の長手方向に対して垂直な方向に延びている一方、第２のワイヤ部材８の他端が細長板状の被係止部材１４の長手方向中央位置を通る第２の仮想直線Ｌ２上の所定位置に設けられた第２の接続部に接続している構成においては、第１の接続部と第２の接続部とを第ｎ番目のパイプ支柱１の長手方向中央位置を通る仮想直線上に位置するようにすると、細長板状の被係止部材１４は傾斜する。
そして、被係止部材１４に対する第１のワイヤ部材７の接続位置と、被係止部材１４に対する第２のワイヤ部材８の接続位置とが近くなるにしたがって、被係止部材１４が管状係止部材１５に当接していない状態でコイルばね９の付勢力により、第１のワイヤ部材７、第２のワイヤ部材８が引っ張られて、被係止部材１４における第１のワイヤ部材７を接続する第１の接続部と第２のワイヤ部材８を接続する第２の接続部とが第ｎ番目のパイプ支柱１の長手方向中央位置を通る仮想直線（図示省略）上に位置したときの、被係止部材１４の傾斜が大きくなる。
被係止部材１４の傾斜が大きくなり過ぎると、被係止部材１４がコイルばね９の付勢力により第ｎ番目のパイプ支柱１の内部を他方の側の方向に移動し、コイルばね９の中に入り込んだ状態において、第１のフック部２０がコイルばね９に圧接し、さらにはコイルばね９の隙間に入り込んで、コイルばね９を大きく変形させてしまう。その結果、コイルばね９による第１の管状連結部材３と第２の管状連結部材４とが連結した状態を保持する力が弱められて、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とが連結した状態での杖の使用に悪影響を与える虞がある。 Further, regarding the connection structure of the foldable cane pipe column, one end of the first wire member 7 is connected to the first connection portion provided in the second hook portion 19, and the second hook portion 19 is an elongated plate. The second end of the second wire member 8 passes through the central position in the longitudinal direction of the elongated plate-shaped locked member 14 while extending in a direction perpendicular to the longitudinal direction of the shaped locked member 14. In the configuration in which the first connecting portion and the second connecting portion are connected to the second connecting portion provided at a predetermined position on the virtual straight line L2 of the above, the first connecting portion and the second connecting portion are centered in the longitudinal direction of the nth pipe column 1. When the member 14 is positioned on a virtual straight line passing through the position, the elongated plate-shaped locked member 14 is inclined.
Then, as the connection position of the first wire member 7 with respect to the locked member 14 and the connection position of the second wire member 8 with respect to the locked member 14 become closer, the locked member 14 is tubularly locked. The first wire member 7 and the second wire member 8 are pulled by the urging force of the coil spring 9 without being in contact with the member 15, and the first wire member 7 in the locked member 14 is connected. Covered when the first connecting portion and the second connecting portion connecting the second wire member 8 are located on a virtual straight line (not shown) passing through the central position in the longitudinal direction of the nth pipe column 1. The inclination of the locking member 14 becomes large.
When the inclination of the locked member 14 becomes too large, the locked member 14 moves inside the nth pipe column 1 toward the other side due to the urging force of the coil spring 9, and is inside the coil spring 9. In the state of being in the coil spring 9, the first hook portion 20 is in pressure contact with the coil spring 9 and further enters the gap of the coil spring 9 to greatly deform the coil spring 9. As a result, the force of the coil spring 9 for holding the first tubular connecting member 3 and the second tubular connecting member 4 in a connected state is weakened, and the nth pipe strut 1 and the n + 1th pipe strut are weakened. There is a risk of adversely affecting the use of the cane in the state where it is connected to 2.

しかるに、本実施形態の折り畳み式杖用パイプ支柱の接続構造によれば、被係止部材１４における、第２のワイヤ部材８の他端が接続する第２の接続部としての連結穴２１’が、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａと（第１の管状連結部材３の）内周部３ａ１の一方の側の端縁Ｂとを結ぶ第１の仮想直線Ｌ１と、被係止部材１４の長手方向中央位置を通る第２の仮想直線Ｌ２との交点Ｃの位置に設けられている構成としたので、被係止部材１４に対する第１のワイヤ部材７の接続位置と、被係止部材１４に対する第２のワイヤ部材８の接続位置とを離すことができ、被係止部材１４が管状係止部材１５に当接していない状態における、被係止部材１４の傾斜を抑えることができる。
その結果、被係止部材１４がコイルばね９の付勢力により第ｎ番目のパイプ支柱１の内部を他方の側の方向に移動し、コイルばね９の中に入り込んだ状態において、第１のフック部２０によるコイルばね９への圧接や、コイルばね９の変形を抑えることができ、コイルばね９による、強い力での第１の管状連結部材３と第２の管状連結部材４とが連結した状態が保持され、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２との連結が安定した状態で杖を使用することができる。 However, according to the connection structure of the foldable cane pipe column of the present embodiment, the connecting hole 21'as the second connecting portion to which the other end of the second wire member 8 of the locked member 14 is connected is provided. , The contact point A of the second hook portion 19 at the other end of the second tubular portion 3b and the one-sided edge B of the inner peripheral portion 3a1 (of the first tubular connecting member 3). Since the configuration is provided at the position of the intersection C between the first virtual straight line L1 connecting the two virtual straight lines L1 and the second virtual straight line L2 passing through the central position in the longitudinal direction of the locked member 14, the locked member 14 is A state in which the connection position of the first wire member 7 and the connection position of the second wire member 8 with respect to the locked member 14 can be separated, and the locked member 14 is not in contact with the tubular locking member 15. The inclination of the locked member 14 in the above can be suppressed.
As a result, in a state where the locked member 14 moves in the direction of the other side inside the nth pipe column 1 by the urging force of the coil spring 9, and enters the coil spring 9, the first hook It is possible to suppress pressure contact of the portion 20 to the coil spring 9 and deformation of the coil spring 9, and the first tubular connecting member 3 and the second tubular connecting member 4 are connected by the coil spring 9 with a strong force. The cane can be used in a state where the state is maintained and the connection between the nth pipe column 1 and the n + 1th pipe column 2 is stable.

第２実施形態
図２は本発明の第２実施形態にかかる折り畳み式杖用パイプ支柱の接続構造の要部構成を概略的に示す正面図である。
本実施形態の折り畳み式杖用パイプ支柱の接続構造では、被係止部材１４における、第２のワイヤ部材８（図２において図示省略）の他端が接続する第２の接続部としての連結穴２１”が、第１の仮想直線Ｌ１に対し（第１の管状連結部材３の）内周部３ａ１の中心側の方向に３．８度傾斜した第３の仮想直線Ｌ３と、第２の仮想直線Ｌ２との交点Ｄの位置に設けられている。そして、第２のワイヤ部材８の他端は、連結穴２１ではなく、連結穴２１”に接続している。
その他の構成は、第１実施形態の折り畳み式杖用パイプ支柱の接続構造と略同じである。 2nd Embodiment FIG. 2 is a front view schematically showing the main part structure of the connection structure of the folding cane pipe strut according to the 2nd Embodiment of this invention.
In the connection structure of the foldable cane pipe column of the present embodiment, the connecting hole as the second connecting portion to which the other end of the second wire member 8 (not shown in FIG. 2) of the locked member 14 is connected. 21 ”is a third virtual straight line L3 inclined 3.8 degrees in the direction toward the center of the inner peripheral portion 3a1 (of the first tubular connecting member 3) with respect to the first virtual straight line L1 and a second virtual line L3. It is provided at the position of the intersection D with the straight line L2, and the other end of the second wire member 8 is connected not to the connecting hole 21 but to the connecting hole 21 ”.
Other configurations are substantially the same as the connection structure of the folding cane pipe column of the first embodiment.

本実施形態の折り畳み式杖用パイプ支柱の接続構造によれば、被係止部材１４における、第２のワイヤ部材８（図１において図示省略）の他端が接続する第２の接続部としての連結穴２１”が、第１の仮想直線Ｌ１に対し（第１の管状連結部材３の）内周部３ａ１の中心側の方向に３．８度傾斜した第３の仮想直線Ｌ３と、第２の仮想直線Ｌ２との交点Ｄの位置に設けられている構成としたので、被係止部材１４に対する第１のワイヤ部材７の接続位置と、被係止部材１４に対する第２のワイヤ部材８の接続位置とを極力離すことができ、被係止部材１４が管状係止部材１５に当接していない状態において、被係止部材１４の傾斜をより一層抑えることができる。
その結果、被係止部材１４がコイルばね９の付勢力により第ｎ番目のパイプ支柱１の内部を他方の側の方向に移動し、コイルばね９の中に入り込んだ状態において、第１のフック部２０によるコイルばね９への圧接や、コイルばね９の変形をより一層抑えることができ、コイルばね９による、より一層強い力での第１の管状連結部材３と第２の管状連結部材４とが連結した状態が保持され、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２との連結がより一層安定した状態で杖を使用することができる。
その他の作用効果は、第１実施形態の折り畳み式杖用パイプ支柱の接続構造と略同じである。 According to the connection structure of the foldable cane pipe column of the present embodiment, the locked member 14 serves as a second connecting portion to which the other end of the second wire member 8 (not shown in FIG. 1) is connected. The third virtual straight line L3 and the second virtual straight line L3 in which the connecting hole 21 "is inclined 3.8 degrees in the direction toward the center of the inner peripheral portion 3a1 (of the first tubular connecting member 3) with respect to the first virtual straight line L1. Since the configuration is provided at the position of the intersection D with the virtual straight line L2, the connection position of the first wire member 7 with respect to the locked member 14 and the second wire member 8 with respect to the locked member 14 The connection position can be separated as much as possible, and the inclination of the locked member 14 can be further suppressed in a state where the locked member 14 is not in contact with the tubular locking member 15.
As a result, in a state where the locked member 14 moves in the direction of the other side inside the nth pipe column 1 by the urging force of the coil spring 9, and enters the coil spring 9, the first hook The pressure contact of the portion 20 to the coil spring 9 and the deformation of the coil spring 9 can be further suppressed, and the first tubular connecting member 3 and the second tubular connecting member 4 with a stronger force due to the coil spring 9 can be further suppressed. The cane can be used in a state in which the connection between the nth pipe column 1 and the n + 1th pipe column 2 is maintained and the connection between the nth pipe column 1 and the n + 1th pipe column 2 is more stable.
Other effects are substantially the same as the connection structure of the folding cane pipe column of the first embodiment.

実施例１
実施例１の折り畳み式杖用パイプ支柱の接続構造として、図１に示した第１実施形態に対応する構造であって、第２のフック部１９が、一方の側の辺に、管状係止部材１５における他方の側の端部に当接することなく、第２の筒状部３ｂにおける他方の側の端部に当接することができるように形成された突起部１９ａを有し、第２の接続部が、図１に示した第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａと（第１の管状連結部材３の）内周部３ａ１の一方の側の端縁Ｂとを結ぶ第１の仮想直線Ｌ１と、被係止部材１４の長手方向中央位置を通る第２の仮想直線Ｌ２との交点Ｃの位置に設けられた連結穴２１’で構成され、第２のワイヤ部材８の他端が、連結穴２１’に接続し、また、被係止部材１４は、第１のフック部２０が設けられている側とは反対側の辺が、一方の側の先端から、第１の仮想直線Ｌ１と交差する位置近傍にかけて被係止部材１４の長手方向の幅が細くなるように、加工され、その他の構成が図４及び図５に示した折り畳み式杖用パイプ支柱の接続構造と略同じとなっている折り畳み式杖用パイプ支柱の接続構造を準備した。 Example 1
The foldable cane pipe strut connection structure of the first embodiment is a structure corresponding to the first embodiment shown in FIG. 1, in which a second hook portion 19 is tubularly locked to one side. It has a protrusion 19a formed so as to be able to abut on the other side end of the second tubular portion 3b without abutting on the other side end of the member 15, and the second The connecting portion is the contact point A of the second hook portion 19 at the other end of the second tubular portion 3b shown in FIG. 1 and the inner peripheral portion 3a1 (of the first tubular connecting member 3). A connecting hole 21'provided at the intersection C of the first virtual straight line L1 connecting the edge B on one side and the second virtual straight line L2 passing through the central position in the longitudinal direction of the locked member 14. The other end of the second wire member 8 is connected to the connecting hole 21', and the locked member 14 is on the side opposite to the side on which the first hook portion 20 is provided. However, it is processed so that the width of the locked member 14 in the longitudinal direction becomes narrower from the tip on one side to the vicinity of the position where it intersects with the first virtual straight line L1, and the other configurations are shown in FIGS. 4 and 5. We prepared a connection structure for foldable cane pipe struts, which is almost the same as the connection structure for foldable cane pipe stanchions shown.

実施例２
実施例２の折り畳み式杖用パイプ支柱の接続構造として、図２に示した第２実施形態に対応する構造であって、第２の接続部が、第１の仮想直線Ｌ１に対し（第１の管状連結部材３の）内周部３ａ１の中心側の方向に３．８度傾斜した第３の仮想直線Ｌ３と、第２の仮想直線Ｌ２との交点Ｄの位置に設けられ連結穴２１”で構成され、第２のワイヤ部材８の他端が、連結穴２１”に接続し、その他の構成が実施例１の折り畳み式杖用パイプ支柱の接続構造と略同じとなっている折り畳み式杖用パイプ支柱の接続構造を準備した。 Example 2
The connection structure of the foldable cane pipe support according to the second embodiment is a structure corresponding to the second embodiment shown in FIG. 2, and the second connection portion is connected to the first virtual straight line L1 (first). The connecting hole 21 "is provided at the position of the intersection D between the third virtual straight line L3 and the second virtual straight line L2, which is inclined 3.8 degrees toward the center of the inner peripheral portion 3a1 of the tubular connecting member 3 of the above. The other end of the second wire member 8 is connected to the connecting hole 21 ”, and the other configurations are substantially the same as the connection structure of the folding cane pipe column of the first embodiment. The connection structure of the pipe support was prepared.

比較例１
比較例１の折り畳み式杖用パイプ支柱の接続構造として、第２のフック部１９が、一方の側の辺に、管状係止部材１５における他方の側の端部に当接することなく、第２の筒状部３ｂにおける他方の側の端部に当接することができるように形成された突起部を有し、第２の接続部が、図４及び図５に示した他端が被係止部材１４の一方の側の先端に形成された連結穴２１で構成され、その他の構成が図４及び図５に示した折り畳み式杖用パイプ支柱の接続構造と略同じとなっている折り畳み式杖用パイプ支柱の接続構造を準備した。 Comparative Example 1
In the connection structure of the foldable cane pipe column of Comparative Example 1, the second hook portion 19 does not abut on one side of the tubular locking member 15 and does not abut on the other end of the tubular locking member 15. Has a protrusion formed so as to be able to abut on the other end of the tubular portion 3b of the second connection, the other end of which is locked in FIGS. 4 and 5. A foldable cane that is composed of a connecting hole 21 formed at the tip of one side of the member 14, and the other configurations are substantially the same as the connection structure of the foldable cane pipe column shown in FIGS. 4 and 5. A connection structure for pipe columns was prepared.

比較例２
比較例２の折り畳み式杖用パイプ支柱の接続構造として、第２のフック部１９が、一方の側の辺に、管状係止部材１５における他方の側の端部に当接することなく、第２の筒状部３ｂにおける他方の側の端部に当接することができるように形成された突起部を有し、第２の接続部が、図１に示した被係止部材１４の長手方向中央位置を通る第２の仮想直線Ｌ２上であって、第２の筒状部３ｂの他方の側の端部における第２のフック部１９の当接点Ａと（第１の管状連結部材３の）内周部３ａ１の一方の側の端縁Ｂとを結ぶ第１の仮想直線Ｌ１と被係止部材１４の長手方向中央位置を通る第２の仮想直線Ｌ２との交点Ｃと、第２のフック部１９に設けられた第１の接続部としての連結穴２２との中間の位置に設けられた連結穴（図示しない）で構成され、その他の構成が図４及び図５に示した折り畳み式杖用パイプ支柱の接続構造と略同じとなっている折り畳み式杖用パイプ支柱の接続構造を準備した。 Comparative Example 2
As the connection structure of the folding cane pipe column of Comparative Example 2, the second hook portion 19 does not abut on one side of the tubular locking member 15 and does not abut on the other end of the tubular locking member 15. The tubular portion 3b of the above has a protrusion formed so as to come into contact with the other end, and the second connecting portion is the center in the longitudinal direction of the locked member 14 shown in FIG. On the second virtual straight line L2 passing through the position, the contact point A of the second hook portion 19 at the other end of the second tubular portion 3b (of the first tubular connecting member 3). The intersection C of the first virtual straight line L1 connecting the end edge B on one side of the inner peripheral portion 3a1 and the second virtual straight line L2 passing through the central position in the longitudinal direction of the locked member 14 and the second hook. It is composed of a connecting hole (not shown) provided at an intermediate position with the connecting hole 22 as the first connecting portion provided in the portion 19, and the other configurations are the foldable canes shown in FIGS. 4 and 5. We prepared a connection structure for foldable cane pipe columns, which is almost the same as the connection structure for pipe columns.

(1)パイプ支柱を折り畳んだ状態の保持試験
(1-1)第１の保持試験
実施例１、２、比較例１、２の夫々の折り畳み式杖用パイプ支柱の接続構造を用いて、図４(b)、図５(c)に示したような、第１のフック部２０が管状係止部材１５における一方の側の端部に係止して、コイルばね９の付勢力による他方の側の方向への移動を阻止している状態において、第２のワイヤ部材８に対して、管状係止部材１５における一方の側の端部から離れる方向であって、第１のパイプ支柱１の長手方向に対して垂直な方向に引っ張る力を加えたときに、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳んだ状態を保持することができるか否かを試験した。 (1) Holding test with the pipe column folded
(1-1) The first holding test is shown in FIGS. 4 (b) and 5 (c) using the connection structures of the foldable cane pipe columns of Examples 1 and 2 and Comparative Examples 1 and 2, respectively. Such a state in which the first hook portion 20 is locked to the end portion on one side of the tubular locking member 15 to prevent the coil spring 9 from moving in the other side direction due to the urging force. In the second wire member 8, a force that pulls the tubular locking member 15 in a direction away from one end of the tubular locking member 15 in a direction perpendicular to the longitudinal direction of the first pipe column 1. When added, it was tested whether the nth pipe strut and the n + 1th pipe strut could be kept in a folded state.

(1-2)第２の保持試験
実施例１、２、比較例１、２の夫々の折り畳み式杖用パイプ支柱の接続構造を用いて、相互のパイプ支柱１、２を第ｎ番目のパイプ支柱１の長手方向に沿って引っ張ることなく、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳み、第２のフック部１９を管状係止部材１５における他方の側の端部に当接させた場合において手を離したときに、第ｎ番目のパイプ支柱と第ｎ＋１番目のパイプ支柱とを折り畳んだ状態を保持することができるか否かを試験した。 (1-2) Second Retention Test Using the connection structure of the foldable cane pipe struts of Examples 1 and 2 and Comparative Examples 1 and 2, the pipe struts 1 and 2 of each other are connected to the nth pipe. The nth pipe strut 1 and the n + 1th pipe strut 2 are folded without being pulled along the longitudinal direction of the strut 1, and the second hook portion 19 is the other end of the tubular locking member 15. It was tested whether or not the nth pipe strut and the n + 1st pipe strut could be kept in a folded state when the hand was released when the pipe strut was brought into contact with the pipe.

(2)パイプ支柱連結時のコイルばねの変形試験
実施例１、２、比較例１、２の夫々の折り畳み式杖用パイプ支柱の接続構造を用いて、第１の管状連結部材３の内周部３ａ１に外周部４ａを嵌合させ、被係止部材１４がコイルばね９の付勢力により第ｎ番目のパイプ支柱１の内部を他方の側の方向に移動し、コイルばね９の中に入り込んだ状態にしたときの、第１のフック部２０のコイルばね９との接触による接触コイルばね９の変形の有無を試験した。試験においては、パイプ支柱１、２を透明の樹脂部材からなるもので構成し、コイルばね９の変形状態を外観観察した。 (2) Deformation test of coil spring when connecting pipe struts Using the connection structure of the foldable cane pipe struts of Examples 1 and 2 and Comparative Examples 1 and 2, the inner circumference of the first tubular connecting member 3 The outer peripheral portion 4a is fitted to the portion 3a1, and the locked member 14 moves inside the nth pipe column 1 toward the other side by the urging force of the coil spring 9, and enters the coil spring 9. It was tested whether or not the contact coil spring 9 was deformed due to the contact of the first hook portion 20 with the coil spring 9 in the state of the state. In the test, the pipe columns 1 and 2 were made of a transparent resin member, and the deformed state of the coil spring 9 was visually observed.

(3)試験結果
(3-1)実施例１、２の試験結果
実施例１、２の折り畳み式杖用パイプ支柱の接続構造では、上記(1)のパイプ支柱を折り畳んだ状態の保持試験に関する第１、第２のいずれの保持試験においても、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態を保持することが確認された。
また、上記(2)のパイプ支柱連結時のコイルばねの変形試験に関しても、コイルばね９に変形が生じず、コイルばね９による、強い力での第１の管状連結部材３と第２の管状連結部材４とが連結した状態が保持されることが確認された。 (3) Test results
(3-1) Test Results of Examples 1 and 2 In the connection structure of the foldable cane pipe columns of Examples 1 and 2, the first and second holding tests relating to the folded state of the pipe columns of (1) above In any of the holding tests, it was confirmed that the nth pipe strut 1 and the n + 1th pipe strut 2 were held in a folded state.
Further, also in the deformation test of the coil spring at the time of connecting the pipe columns in (2) above, the coil spring 9 is not deformed, and the coil spring 9 exerts a strong force on the first tubular connecting member 3 and the second tubular. It was confirmed that the state of being connected to the connecting member 4 was maintained.

(3-2)比較例１の試験結果
これに対し、比較例１の折り畳み式杖用パイプ支柱の接続構造では、上記(2)のパイプ支柱連結時のコイルばねの変形試験に関しては、コイルばね９に変形が生じず、コイルばね９による、強い力での第１の管状連結部材３と第２の管状連結部材４とが連結した状態が保持されることが確認されたが、上記(1)のパイプ支柱を折り畳んだ状態の保持試験に関しては、第１、第２のいずれの保持試験においても、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態を保持することができない場合が生じることが確認された。 (3-2) Test Results of Comparative Example 1 On the other hand, in the connection structure of the foldable cane pipe strut of Comparative Example 1, the coil spring deformation test at the time of connecting the pipe strut in (2) above is the coil spring. It was confirmed that the 9 was not deformed and the coil spring 9 maintained the state in which the first tubular connecting member 3 and the second tubular connecting member 4 were connected by a strong force. ), In both the first and second holding tests, the nth pipe strut 1 and the n + 1th pipe strut 2 are held in a folded state. It was confirmed that there were cases where it was not possible.

(3-3)比較例２の試験結果
また、比較例２の折り畳み式杖用パイプ支柱の接続構造では、上記(1)のパイプ支柱を折り畳んだ状態の保持試験に関する第１、第２のいずれの保持試験においても、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とを折り畳んだ状態を保持することが確認されたが、上記(2)のパイプ支柱連結時のコイルばねの変形試験に関しては、第１のフック部２０がコイルばね９に圧接し、さらにはコイルばね９の隙間に入り込んで、コイルばね９に大きな変形が生じ、コイルばね９による第１の管状連結部材３と第２の管状連結部材４とが連結した状態を保持する力が弱められて、第ｎ番目のパイプ支柱１と第ｎ＋１番目のパイプ支柱２とが連結した状態での杖の使用に悪影響を与える虞があることが確認された。 (3-3) Test Results of Comparative Example 2 Further, in the connection structure of the foldable cane pipe column of Comparative Example 2, either the first or the second regarding the holding test in the folded state of the pipe column of the above (1). In the holding test of, it was confirmed that the nth pipe strut 1 and the n + 1th pipe strut 2 were held in a folded state, but the deformation of the coil spring when the pipe strut was connected in (2) above was confirmed. Regarding the test, the first hook portion 20 was pressed against the coil spring 9 and further entered the gap of the coil spring 9, causing a large deformation of the coil spring 9, and the first tubular connecting member 3 by the coil spring 9. The force for holding the connected state with the second tubular connecting member 4 is weakened, which adversely affects the use of the cane in the state where the nth pipe column 1 and the n + 1th pipe column 2 are connected. It was confirmed that there was a risk.

以上、本発明の実施形態の折り畳み式杖用パイプ支柱の接続構造について説明したが、本発明は、図示した上述の実施形態の構成に限定されるものではなく、本発明の技術的範囲に属する形態であれば、どのような形態に形成されていてもよい。 Although the connection structure of the folding cane pipe column of the embodiment of the present invention has been described above, the present invention is not limited to the configuration of the above-described embodiment shown in the illustration, and belongs to the technical scope of the present invention. As long as it is a form, it may be formed in any form.

本発明の折り畳み式杖用パイプ支柱の接続構造は、折り畳み式杖のほかにも、例えば、テントの支柱などパイプ状支柱の接続を行うことが必要とされる分野に有用である。 The connection structure of the foldable cane pipe support of the present invention is useful in a field where it is required to connect a pipe-shaped support such as a tent support in addition to the foldable cane.

１ 第ｎ番目のパイプ支柱
２ 第ｎ＋１番目のパイプ支柱
３ 第１の管状連結部材
３ａ 第１の筒状部
３ａ１ 内周部
３ｂ 第２の筒状部
４ 第２の管状連結部材
４ａ 外周部
７ 第１のワイヤ部材
８ 第２のワイヤ部材
９ コイルばね
１０ ばね受け
１１ 緩衝部材
１２ 座金
１３ リング状針金部材
１４ 被係止部材
１５ 管状係止部材
１９ 第２のフック部
２０ 第１のフック部
２１、２１’、２１” 第１の接続部としての連結穴
２２ 第２の接続部としての連結穴
５１、５２ パイプ支柱
５３、５４ 連結金具（管状連結部材）
５５ ゴムひも 1 Nth pipe strut 2 N + 1st pipe strut 3 First tubular connecting member 3a First tubular portion 3a 1 Inner peripheral portion 3b Second tubular portion 4 Second tubular connecting member 4a Outer peripheral portion 7 1st wire member 8 2nd wire member 9 Coil spring 10 Spring receiver 11 Cushioning member 12 Washer 13 Ring-shaped wire member 14 Locked member 15 Tubular locking member 19 Second hook portion 20 First hook portion 21 , 21', 21 "Connecting hole as the first connecting part 22 Connecting hole as the second connecting part 51, 52 Pipe support 53, 54 Connecting metal fitting (tubular connecting member)
55 elastic cord

Claims (3)

第ｎ番目のパイプ支柱と、第ｎ＋１番目のパイプ支柱と、
前記第ｎ番目のパイプ支柱における一方の側の端部に設けられていて、他方の側に向かって開口径が狭くなるようにテーパのついた内周部を有する第１の筒状部と、前記ｎ番目のパイプ支柱の内径よりも小さな外径を有する第２の筒状部とを備えた第１の管状連結部材と、
前記第ｎ＋１番目のパイプ支柱における他方の側の端部に設けられていて、前記第１の管状連結部材の前記内周部に嵌合可能な外周部を備えた第２の管状連結部材と、
前記第１の管状連結部材における他方の側の端部に設けられた管状係止部材と、
一端に前記管状係止部材における一方の側の端部に係止可能且つ該管状係止部材の内部を挿通可能な第１のフック部、他端に該管状係止部材の内部を挿通不能な第２のフック部を有し、前記第１のフック部における前記管状係止部材と当接する辺の先端から一方の側の先端に向かって幅が狭くなるように傾斜した、細長板状の被係止部材と、
一端が前記第２のフック部に設けられた第１の接続部に接続する第１のワイヤ部材と、
他端が前記被係止部材における所定位置に設けられた第２の接続部に接続する第２のワイヤ部材と、
前記第ｎ番目のパイプ支柱の内部において、一端が前記第２の筒状部を遊嵌した状態で、前記第１の筒状部と当接し前記第１のワイヤ部材を他方の側の方向に付勢するバネと、
前記第１のワイヤ部材の他端と接続するとともに、前記バネと当接して該バネの他方の側の方向への移動を規制する第１の移動規制部材と、
前記第２のワイヤ部材の一端と接続するとともに、前記第ｎ＋１番目のパイプ支柱の前記第２の管状連結部材における一方の側の端部に当接して該第２のワイヤ部材の他方の側の方向への移動を規制する第２の移動規制部材と、
を有し、
前記内周部に前記外周部を嵌合させたときに、前記被係止部材が、前記第１のフック部による前記管状係止部材における一方の側の端部との係止を解除されて、前記バネの付勢力により前記第ｎ番目のパイプ支柱の内部を他方の側の方向に移動し、前記第１の管状連結部材と前記第２の管状連結部材との嵌合状態が保持され、
前記第２の管状連結部材が前記第１の管状連結部材から離れるように、相互の前記パイプ支柱を引っ張り、前記バネの付勢力に抗して前記被係止部材を一方の側の方向に移動させたときに、前記第１のフック部が前記管状係止部材における一方の側の端部に係止して、前記バネの付勢力による他方の側の方向への移動を阻止するように構成された折り畳み式杖用パイプ支柱の接続構造において、
前記第２のフック部が、前記管状係止部材における他方の側の端部に当接することなく、前記第２の筒状部における他方の側の端部に当接することができるように形成され、
前記被係止部材における、前記第２のワイヤ部材の他端が接続する前記第２の接続部が、前記第２の筒状部の他方の側の端部における前記第２のフック部の当接点と前記内周部の一方の側の端縁とを結ぶ第１の仮想直線と、前記被係止部材の長手方向中央位置を通る第２の仮想直線との交点位置近傍から、前記第１の仮想直線に対し前記内周部の中心側の方向に３．８度傾斜した第３の仮想直線と前記第２の仮想直線との交点位置までの、該第２の仮想直線上の所定位置に設けられていることを特徴とする折り畳み式杖用パイプ支柱の接続構造。 The nth pipe strut, the n + 1st pipe strut,
A first tubular portion provided at one end of the nth pipe column and having an inner peripheral portion tapered so that the opening diameter becomes narrower toward the other side. A first tubular connecting member having a second tubular portion having an outer diameter smaller than the inner diameter of the nth pipe column,
A second tubular connecting member provided at the other end of the n + 1th pipe column and having an outer peripheral portion that can be fitted to the inner peripheral portion of the first tubular connecting member.
A tubular locking member provided at the other end of the first tubular connecting member,
A first hook portion that can be locked to one end of the tubular locking member and can be inserted into the inside of the tubular locking member at one end, and cannot be inserted into the inside of the tubular locking member at the other end. An elongated plate-like cover having a second hook portion and inclined so that the width narrows from the tip of the side of the first hook portion that comes into contact with the tubular locking member toward the tip of one side. With the locking member
A first wire member having one end connected to a first connecting portion provided on the second hook portion, and a first wire member.
A second wire member whose other end is connected to a second connecting portion provided at a predetermined position in the locked member,
Inside the nth pipe column, with one end loosely fitting the second tubular portion, the first tubular portion comes into contact with the first tubular portion and the first wire member is directed toward the other side. The urging spring and
A first movement restricting member that connects to the other end of the first wire member and abuts on the spring to regulate the movement of the spring in the other side.
Connected to one end of the second wire member and abutted on one end of the second tubular connecting member of the n + 1th pipe strut on the other side of the second wire member. A second movement restricting member that regulates movement in the direction,
Have,
When the outer peripheral portion is fitted to the inner peripheral portion, the locked member is released from being locked with the one-sided end portion of the tubular locking member by the first hook portion. , The urging force of the spring moves the inside of the nth pipe column in the direction of the other side, and the fitted state of the first tubular connecting member and the second tubular connecting member is maintained.
Pull each other's pipe struts so that the second tubular connecting member separates from the first tubular connecting member, and move the locked member in one direction against the urging force of the spring. When the spring is formed, the first hook portion is locked to one end of the tubular locking member to prevent the spring from moving in the other side due to the urging force of the spring. In the connection structure of the pipe struts for folding canes
The second hook portion is formed so as to be able to abut on the other side end portion of the second tubular portion without abutting on the other side end portion of the tubular locking member. ,
The second connecting portion of the locked member to which the other end of the second wire member is connected is the contact of the second hook portion at the other end of the second tubular portion. From the vicinity of the intersection position of the first virtual straight line connecting the contact point and the one-sided edge of the inner peripheral portion and the second virtual straight line passing through the central position in the longitudinal direction of the locked member, the first A predetermined position on the second virtual straight line up to the intersection position of the third virtual straight line inclined 3.8 degrees toward the center side of the inner peripheral portion and the second virtual straight line. The connection structure of the pipe column for the foldable cane, which is characterized by being provided in. 前記被係止部材における、前記第２のワイヤ部材の他端が接続する前記第２の接続部が、前記第１の仮想直線と前記第２の仮想直線との交点位置に設けられていることを特徴とする請求項１に記載の折り畳み式杖用パイプ支柱の接続構造。 The second connecting portion of the locked member to which the other end of the second wire member is connected is provided at an intersection position between the first virtual straight line and the second virtual straight line. The connection structure of a pipe strut for a foldable cane according to claim 1. 前記被係止部材における、前記第２のワイヤ部材の他端が接続する前記第２の接続部が、前記第１の仮想直線に対し前記内周部の中心側の方向に３．８度傾斜した第３の仮想直線と、前記第２の仮想直線との交点位置に設けられていることを特徴とする請求項１に記載の折り畳み式杖用パイプ支柱の接続構造。 The second connecting portion of the locked member to which the other end of the second wire member is connected is tilted 3.8 degrees in the direction toward the center of the inner peripheral portion with respect to the first virtual straight line. The connection structure for a foldable cane pipe column according to claim 1, wherein the third virtual straight line is provided at an intersection position with the second virtual straight line.
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