JP3232325U

JP3232325U - Cable drum

Info

Publication number: JP3232325U
Application number: JP2021001043U
Authority: JP
Inventors: 加寿也椎田
Original assignee: Yazaki Energy System Corp
Current assignee: Yazaki Energy System Corp
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-06-03
Anticipated expiration: 2031-03-25

Abstract

【課題】簡易な構成で巻胴部を容易に伸縮することができ、部品点数を少なくしてコストを安くすることができるケーブルドラムを提供する。【解決手段】ケーブルドラム１は、巻胴部２が、軸方向に伸縮自在に形成され、円環状に離間して配置された３つの伸縮胴部１０で構成される。各伸縮胴部１０は、３つの筒状部材１１〜１３を有し、３つの筒状部材１１〜１３は、収縮状態において、外側の筒状部材の内部空間に内側の筒状部材が収容され、伸縮胴部１０が伸長した伸長状態で、内側筒状部材を外側の外側筒状部材に係止して内側筒状部材の収縮方向への移動を規制するロック機構２５を有する。ロック機構２５は、内側筒状部材のテーパー面から突出し、外側筒状部材の内周よりも外側に延在する凸部を有し、凸部が外側筒状部材の内周より外側に突出した突出状態と、凸部が外側筒状部材の内周より内側に埋没した埋没状態とに切り替わる。【選択図】図１PROBLEM TO BE SOLVED: To provide a cable drum capable of easily expanding and contracting a winding body portion with a simple configuration, reducing the number of parts and reducing the cost. SOLUTION: A cable drum 1 is composed of three telescopic body portions 10 in which a winding body portion 2 is formed so as to be expandable and contractible in the axial direction and arranged in an annular shape. Each telescopic body 10 has three tubular members 11 to 13, and the three tubular members 11 to 13 have an inner tubular member housed in the inner space of the outer tubular member in a contracted state. The telescopic body portion 10 has a lock mechanism 25 that locks the inner tubular member to the outer outer tubular member and regulates the movement of the inner tubular member in the contraction direction in the extended state. The lock mechanism 25 has a convex portion that protrudes from the tapered surface of the inner tubular member and extends outward from the inner circumference of the outer tubular member, and the convex portion protrudes outward from the inner circumference of the outer tubular member. It switches between a protruding state and a buried state in which the convex portion is buried inside the inner circumference of the outer tubular member. [Selection diagram] Fig. 1

Description

本考案は、ケーブルドラムに関する。 The present invention relates to a cable drum.

従来、ケーブル等の長物を輸送、保管する場合、ケーブルドラムに巻きつけている。長物が巻回されていないケーブルドラムを保管する場合、例えば、巻胴部から鍔部を取り外して分解するか、分解することなく、巻胴部に長物をすぐに巻回できる状態にしている。例えば、特許文献１では、中間胴部の中央部に折り畳み機構を設けたケーブル用巻き取りドラムが記載されている。また、特許文献２では、巻胴部以外に、鍔部に着脱可能で一対の鍔部間を連結する伸縮機構部材が記載されている。 Conventionally, when transporting and storing long items such as cables, they are wrapped around a cable drum. When storing a cable drum in which a long object is not wound, for example, the collar portion is removed from the winding body and disassembled, or the long object can be immediately wound around the winding body without disassembling. For example, Patent Document 1 describes a cable take-up drum provided with a folding mechanism at the center of an intermediate body portion. Further, Patent Document 2 describes, in addition to the winding body portion, a telescopic mechanism member that can be attached to and detached from the flange portion and connects the pair of collar portions.

特開２００４−４３１７６号公報Japanese Unexamined Patent Publication No. 2004-43176 特開２０２０−１３８８４０号公報Japanese Unexamined Patent Publication No. 2020-138840

しかしながら、ケーブルドラムを分解して保管する場合、分解作業及び組立作業が必要となり、作業工数の多さの点で改善の余地がある。また、長物が巻回されていないケーブルドラムを分解することなくドラム置き場に保管する場合、当該ドラム置き場が限られたスペースであるときに、そこに保管できるケーブルドラムの個数が限られることから改善の余地がある。 However, when the cable drum is disassembled and stored, disassembly work and assembly work are required, and there is room for improvement in terms of a large number of work man-hours. In addition, when a cable drum that is not wound with a long object is stored in the drum storage area without being disassembled, the number of cable drums that can be stored there is limited when the drum storage area is limited. There is room for.

本考案は、上記課題に鑑みてなされたものであって、簡易な構成で巻胴部を容易に伸縮することができ、部品点数を少なくしてコストを安くすることができるケーブルドラムを提供することを目的とする。 The present invention has been made in view of the above problems, and provides a cable drum capable of easily expanding and contracting the winding body portion with a simple configuration, reducing the number of parts, and reducing the cost. The purpose is.

上記目的を達成するために、本考案に係るケーブルドラムは、ケーブルが巻回される巻胴部と、前記巻胴部の軸方向の両端に設けられた一対の鍔部と、を備え、前記巻胴部は、前記軸方向に伸縮自在に形成され、円環状に離間して配置された複数の伸縮胴部で構成され、各伸縮胴部は、複数の筒状部材を有し、複数の前記筒状部材は、前記伸縮胴部が収縮した収縮状態において、外側の前記筒状部材の内部空間に内側の前記筒状部材が収容され、前記伸縮胴部が伸長した伸長状態において、前記内側筒状部材を外側の外側筒状部材に係止して前記内側筒状部材の前記収縮方向への移動を規制するロック機構を有し、前記ロック機構は、前記内側筒状部材の前記外周面から突出し、少なくとも前記外側筒状部材の内周よりも外側に延在する凸部を有し、前記凸部が前記外側筒状部材の内周より外側に突出した突出状態と、前記凸部が前記外側筒状部材の内周より内側に埋没した埋没状態とに切り替わる、ことを特徴とする。 In order to achieve the above object, the cable drum according to the present invention includes a winding body portion around which the cable is wound and a pair of collar portions provided at both ends in the axial direction of the winding body portion. The winding body portion is formed so as to be expandable and contractible in the axial direction, and is composed of a plurality of telescopic body portions arranged so as to be spaced apart from each other in an annular shape. In the contracted state in which the telescopic body portion is contracted, the tubular member is housed in the inner space of the tubular member on the outside, and the tubular member is housed in the inner space of the tubular member on the outer side. The locking mechanism has a locking mechanism that locks the tubular member to the outer outer tubular member to restrict the movement of the inner tubular member in the contraction direction, and the locking mechanism is the outer peripheral surface of the inner tubular member. It has a convex portion that protrudes from the outer circumference and extends outward from the inner circumference of the outer tubular member, and the convex portion protrudes outward from the inner circumference of the outer tubular member. It is characterized in that it switches to a buried state in which the outer tubular member is buried inside the inner circumference.

本考案に係るケーブルドラムによれば、簡易な構成で巻胴部を容易に伸縮することができ、部品点数を少なくしてコストを安くすることができる、という効果を奏する。 According to the cable drum according to the present invention, the winding body can be easily expanded and contracted with a simple configuration, the number of parts can be reduced, and the cost can be reduced.

図１は、本実施形態に係るケーブルドラムを軸方向と直交する方向から見た図である。FIG. 1 is a view of the cable drum according to the present embodiment as viewed from a direction orthogonal to the axial direction. 図２は、本実施形態に係るケーブルドラムを軸方向から見た図である。FIG. 2 is a view of the cable drum according to the present embodiment as viewed from the axial direction. 図３は、本実施形態に係る伸縮胴部の収縮状態を示す図である。FIG. 3 is a diagram showing a contracted state of the telescopic body according to the present embodiment. 図４（Ａ）は、本実施形態に係る伸縮胴部の伸長状態を外側の一方から見た図、図４（Ｂ）は、伸縮胴部の伸長状態を外側の他方から見た図である。FIG. 4 (A) is a view of the stretched state of the telescopic body according to the present embodiment viewed from one outside, and FIG. 4 (B) is a view of the stretched body of the telescopic body viewed from the other outside. .. 図５（Ａ）は、本実施形態に係る第一筒状部材を示す図、図５（Ｂ）は、第二筒状部材を示す図である。FIG. 5A is a diagram showing a first tubular member according to the present embodiment, and FIG. 5B is a diagram showing a second tubular member. 図６（Ａ）は、本実施形態に係る第一及び第二筒状部材を伸縮方向から見た図、図６（Ｂ）は、第一及び第二筒状部材を外周の湾曲面から見た図である。FIG. 6A is a view of the first and second tubular members according to the present embodiment as viewed from the expansion and contraction direction, and FIG. 6B is a view of the first and second tubular members as viewed from the curved surface of the outer periphery. It is a figure. 図７は、本実施形態に係る第三筒状部材を示す図である。FIG. 7 is a diagram showing a third tubular member according to the present embodiment. 図８（Ａ）は、本実施形態に係る第三筒状部材を伸縮方向から見た図、図８（Ｂ）は、第三筒状部材を外周の湾曲面から見た図である。FIG. 8A is a view of the third tubular member according to the present embodiment viewed from the expansion / contraction direction, and FIG. 8B is a view of the third tubular member viewed from the curved surface of the outer circumference. 図９（Ａ）は、本実施形態に係るロック機構のロック状態を示す図、図９（Ｂ）は、本実施形態に係るロック機構のロック解除状態を示す模式図である。FIG. 9A is a diagram showing a locked state of the lock mechanism according to the present embodiment, and FIG. 9B is a schematic diagram showing an unlocked state of the lock mechanism according to the present embodiment. 図１０（Ａ）は、本実施形態に係る伸縮胴部におけるロック機構のロック状態時の作用を説明するための図、図１０（Ｂ）は、本実施形態に係る伸縮胴部におけるロック機構のロック解除状態時の作用を説明するための図である。FIG. 10 (A) is a diagram for explaining the operation of the lock mechanism in the telescopic body according to the present embodiment in the locked state, and FIG. 10 (B) is a view of the lock mechanism in the telescopic body according to the present embodiment. It is a figure for demonstrating the operation in the unlocked state.

以下に、本考案の実施形態に係るケーブルドラムを図面に基づいて詳細に説明する。なお、この実施形態によりこの考案が限定されるものではない。また、下記実施形態における構成要素には、当業者が置換可能かつ容易なもの、あるいは実質的に同一のものが含まれる。 Hereinafter, the cable drum according to the embodiment of the present invention will be described in detail with reference to the drawings. It should be noted that this embodiment does not limit the present invention. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

［実施形態］
図１は、本実施形態に係るケーブルドラムを軸方向と直交する方向から見た図である。図２は、本実施形態に係るケーブルドラムを軸方向から見た図である。図３は、本実施形態に係る伸縮胴部の収縮状態を示す図である。図４（Ａ）は、本実施形態に係る伸縮胴部の伸長状態を外側の一方から見た図、図４（Ｂ）は、伸縮胴部の伸長状態を外側の他方から見た図である。図５（Ａ）は、本実施形態に係る第一筒状部材を示す図、図５（Ｂ）は、第二筒状部材を示す図である。図６（Ａ）は、本実施形態に係る第一及び第二筒状部材を伸縮方向から見た図、図６（Ｂ）は、第一及び第二筒状部材を外周の湾曲面から見た図である。図７は、本実施形態に係る第三筒状部材を示す図である。図８（Ａ）は、本実施形態に係る第三筒状部材を伸縮方向から見た図、図８（Ｂ）は、第三筒状部材を外周の湾曲面から見た図である。図９（Ａ）は、本実施形態に係るロック機構のロック状態を示す図、図９（Ｂ）は、本実施形態に係るロック機構のロック解除状態を示す模式図である。図１０（Ａ）は、本実施形態に係る伸縮胴部におけるロック機構のロック状態時の作用を説明するための図、図１０（Ｂ）は、本実施形態に係る伸縮胴部におけるロック機構のロック解除状態時の作用を説明するための図である。なお、図６（Ｂ）は、図６（Ａ）に示す矢印Ｆから筒状部材を見た図、図６（Ｃ）は、図６（Ａ）に示す矢印Ｇから筒状部材を見た図である。図８（Ｂ）は、図８（Ａ）に示す矢印Ｆから筒状部材を見た図、図８（Ｃ）は、図８（Ａ）に示す矢印Ｇから筒状部材を見た図である。 [Embodiment]
FIG. 1 is a view of the cable drum according to the present embodiment as viewed from a direction orthogonal to the axial direction. FIG. 2 is a view of the cable drum according to the present embodiment as viewed from the axial direction. FIG. 3 is a diagram showing a contracted state of the telescopic body according to the present embodiment. FIG. 4 (A) is a view of the stretched state of the telescopic body according to the present embodiment viewed from one outside, and FIG. 4 (B) is a view of the stretched body of the telescopic body viewed from the other outside. .. FIG. 5A is a diagram showing a first tubular member according to the present embodiment, and FIG. 5B is a diagram showing a second tubular member. FIG. 6A is a view of the first and second tubular members according to the present embodiment as viewed from the expansion and contraction direction, and FIG. 6B is a view of the first and second tubular members as viewed from the curved surface of the outer periphery. It is a figure. FIG. 7 is a diagram showing a third tubular member according to the present embodiment. FIG. 8A is a view of the third tubular member according to the present embodiment viewed from the expansion / contraction direction, and FIG. 8B is a view of the third tubular member viewed from the curved surface of the outer circumference. FIG. 9A is a diagram showing a locked state of the lock mechanism according to the present embodiment, and FIG. 9B is a schematic diagram showing an unlocked state of the lock mechanism according to the present embodiment. FIG. 10 (A) is a diagram for explaining the operation of the lock mechanism in the telescopic body according to the present embodiment in the locked state, and FIG. 10 (B) is a view of the lock mechanism in the telescopic body according to the present embodiment. It is a figure for demonstrating the operation in the unlocked state. 6 (B) is a view of the tubular member from the arrow F shown in FIG. 6 (A), and FIG. 6 (C) is a view of the tubular member from the arrow G shown in FIG. 6 (A). It is a figure. 8 (B) is a view of the tubular member from the arrow F shown in FIG. 8 (A), and FIG. 8 (C) is a view of the tubular member seen from the arrow G shown in FIG. 8 (A). is there.

なお、以下の説明では、図１に示すケーブルドラム１の軸線Ｏを軸方向とし、軸方向に直交する方向を径方向とする。また、便宜的に、軸方向のうちの一方をＤ１方向、他方をＤ２方向とする。図３以降に示す伸縮胴部１０の伸縮する方向を伸縮方向とする。また、便宜的に、伸縮方向のうち伸長方向をＥ１方向、収縮方向をＥ２方向とする。なお、伸縮方向は、必ずしも軸方向と沿うものではない。 In the following description, the axis O of the cable drum 1 shown in FIG. 1 is the axial direction, and the direction orthogonal to the axial direction is the radial direction. For convenience, one of the axial directions is the D1 direction and the other is the D2 direction. The expansion / contraction direction of the expansion / contraction body 10 shown in FIGS. 3 and 3 is defined as the expansion / contraction direction. For convenience, the extension direction is the E1 direction and the contraction direction is the E2 direction. The expansion / contraction direction is not necessarily along the axial direction.

本実施形態に係るケーブルドラム１は、図１、図２に示すように、巻胴部２と、一対の鍔部３とで構成される。 As shown in FIGS. 1 and 2, the cable drum 1 according to the present embodiment is composed of a winding body portion 2 and a pair of collar portions 3.

巻胴部２は、ケーブル（不図示）が巻回される部分である。本実施形態の巻胴部２は、ケーブルドラム１の軸方向において伸縮自在に構成される。 The winding body 2 is a portion around which a cable (not shown) is wound. The winding body 2 of the present embodiment is configured to be expandable and contractible in the axial direction of the cable drum 1.

一対の鍔部３は、巻胴部２の軸方向の両端に設けられ、巻胴部２を軸方向から挟持することで、当該巻胴部２の外周に巻回されるケーブルを軸方向からガイドする機能を有する。各鍔部３は、軸方向から見た形状が円形状に形成される。各鍔部３は、軸穴３ａを有する。軸穴３ａは、軸方向に貫通する正円状の貫通孔であり、軸棒（不図示）が挿入されることにより、軸受としての機能を有する。一対の鍔部３のうち、一方の鍔部３の軸穴３ａと、他方の鍔部３の軸穴３ａとは、軸方向において対向する位置にある。 A pair of flanges 3 are provided at both ends of the winding body 2 in the axial direction, and by sandwiching the winding body 2 from the axial direction, a cable wound around the outer circumference of the winding body 2 can be wound from the axial direction. It has a function to guide. Each flange portion 3 is formed in a circular shape when viewed from the axial direction. Each flange portion 3 has a shaft hole 3a. The shaft hole 3a is a perfect circular through hole penetrating in the axial direction, and has a function as a bearing by inserting a shaft rod (not shown). Of the pair of flange portions 3, the shaft hole 3a of one flange portion 3 and the shaft hole 3a of the other flange portion 3 are located at positions facing each other in the axial direction.

巻胴部２は、図１〜図３、図４（Ａ）、図４（Ｂ）に示すように、３つの伸縮胴部１０で構成される。３つの伸縮胴部１０は、それぞれが軸方向に伸縮自在に形成される。３つの伸縮胴部１０は、軸方向の一方（Ｄ１方向）に伸長するものと他方（Ｄ２方向）に伸長するものとが円環状に離間して交互に配置されている。３つの伸縮胴部１０の間には空間が形成されており、当該空間は、一対の鍔部３のうち一方の鍔部３の軸穴３ａ及び他方の鍔部３の軸穴３ａを介して外部空間と連通し、軸棒が一方の軸穴３ａから他方の軸穴３ａに挿通可能になっている。各伸縮胴部１０の両端は、各伸縮胴部１０が最大伸長状態において、軸方向と略平行になるように、各鍔部３に対して斜めに固定されている。各伸縮胴部１０は、図４の（Ａ）、図４の（Ｂ）に示すように、３つの筒状部材１１，１２，１３で構成される。３つの筒状部材１１〜１３は、伸縮胴部１０が伸長状態において、伸長方向（図３のＥ１方向）に向かって筒状部材１３，１２，１１の順に配置されている。３つの筒状部材１１〜１３は、伸縮胴部１０が伸長する際に、筒状部材１３を基準に当該筒状部材１３から伸長方向（Ｅ１方向）に筒状部材１１，１２が順に伸長するように構成される。３つの伸縮胴部１０は、軸方向の一方に伸長するものと他方に伸長するものとが円環状に離間して交互に配置されていることから、一対の鍔部３のうち、Ｄ１方向側の鍔部３には、１つの伸縮胴部１０の筒状部材１１と、２つの伸縮胴部１０の各筒状部材１３とが固定され、Ｄ２方向側の鍔部３には、２つの伸縮胴部１０の各筒状部材１１と、１つの伸縮胴部１０の筒状部材１３とが固定される。 As shown in FIGS. 1 to 3, 4 (A) and 4 (B), the winding body 2 is composed of three telescopic body 10. Each of the three telescopic body portions 10 is formed so as to be expandable and contractible in the axial direction. In the three telescopic body portions 10, one extending in one axial direction (D1 direction) and one extending in the other (D2 direction) are alternately arranged so as to be spaced apart from each other in an annular shape. A space is formed between the three telescopic body portions 10, and the space is formed through the shaft hole 3a of one flange portion 3 and the shaft hole 3a of the other flange portion 3 of the pair of collar portions 3. Communicating with the external space, the shaft rod can be inserted from one shaft hole 3a into the other shaft hole 3a. Both ends of each telescopic body 10 are obliquely fixed to each flange 3 so that each telescopic body 10 is substantially parallel to the axial direction in the maximum extended state. As shown in (A) of FIG. 4 and (B) of FIG. 4, each telescopic body portion 10 is composed of three tubular members 11, 12, and 13. The three tubular members 11 to 13 are arranged in the order of the tubular members 13, 12 and 11 in the extending direction (E1 direction in FIG. 3) in the extended state of the telescopic body portion 10. In the three tubular members 11 to 13, when the telescopic body portion 10 extends, the tubular members 11 and 12 extend in order from the tubular member 13 in the extension direction (E1 direction) with respect to the tubular member 13. It is configured as follows. Since the three telescopic body portions 10 are arranged alternately with one extending in one axial direction and one extending in the other direction spaced apart from each other in an annular shape, the D1 direction side of the pair of collar portions 3 is arranged. A tubular member 11 of one telescopic body portion 10 and each tubular member 13 of two telescopic body portions 10 are fixed to the flange portion 3, and two telescopic members 3 are fixed to the flange portion 3 on the D2 direction side. Each tubular member 11 of the body portion 10 and the tubular member 13 of one telescopic body portion 10 are fixed.

３つの筒状部材１１〜１３は、内部空間Ｓ１〜Ｓ３を有し、これら内部空間Ｓ１〜Ｓ３が、伸縮胴部１０が伸長した伸長状態で連通して１つの空間を形成する。３つの筒状部材１１〜１３は、図３に示す伸縮胴部１０が収縮した収縮状態において、外側の筒状部材の内部空間に内側の筒状部材が収容される。具体的には、筒状部材１１（第一筒状部材）は、上記収縮状態において、外側の筒状部材１２（第二筒状部材）の内部空間Ｓ２に収容される。この場合、筒状部材１１が内側筒状部材となり、筒状部材１２が外側筒状部材となる。筒状部材１２は、上記収縮状態において、外側の筒状部材１３（第三筒状部材）の内部空間Ｓ３に収容される。この場合、筒状部材１２が内側筒状部材となり、筒状部材１３が外側筒状部材となる。３つの筒状部材１１〜１３のうち、筒状部材１１が最も小さく、筒状部材１３が最も大きい。 The three tubular members 11 to 13 have internal spaces S1 to S3, and these internal spaces S1 to S3 communicate with each other in an extended state in which the telescopic body portion 10 is extended to form one space. In the three tubular members 11 to 13, the inner tubular member is housed in the inner space of the outer tubular member in the contracted state in which the telescopic body portion 10 shown in FIG. 3 is contracted. Specifically, the tubular member 11 (first tubular member) is housed in the internal space S2 of the outer tubular member 12 (second tubular member) in the contracted state. In this case, the tubular member 11 becomes the inner tubular member, and the tubular member 12 becomes the outer tubular member. The tubular member 12 is housed in the internal space S3 of the outer tubular member 13 (third tubular member) in the contracted state. In this case, the tubular member 12 becomes the inner tubular member, and the tubular member 13 becomes the outer tubular member. Of the three tubular members 11 to 13, the tubular member 11 is the smallest and the tubular member 13 is the largest.

筒状部材１１，１２は、図５の（Ａ）、図５の（Ｂ）、図６の（Ａ）、図６の（Ｂ）に示すように、それぞれが外周面２０と、内部空間Ｓ１，Ｓ２を形成する内周面３０と、ロック機構２５とを有する。筒状部材１３は、図７、図８の（Ａ）、図８の（Ｂ）に示すように、外周面２０と、内部空間Ｓ３を形成する内周面３０とを有する。 As shown in (A) of FIG. 5, (B) of FIG. 5, (A) of FIG. 6, and (B) of FIG. 6, each of the tubular members 11 and 12 has an outer peripheral surface 20 and an internal space S1. , S2 is formed by an inner peripheral surface 30 and a locking mechanism 25. As shown in FIGS. 7, 8 (A) and 8 (B), the tubular member 13 has an outer peripheral surface 20 and an inner peripheral surface 30 forming the internal space S3.

筒状部材１１の外周面２０は、テーパー面２１−１と、非テーパー面２２−１と、一対の外周側湾曲面２３Ａ１，２３Ｂ１とで構成される。テーパー面２１−１と非テーパー面２２−１とは、筒状部材１１の延在方向と直交する第一対向方向に対向し、かつ各外周側湾曲面２３Ａ１，２３Ｂ１を挟んで連結されている。一対の外周側湾曲面２３Ａ１，２３Ｂ１は、上記延在方向及び上記第一対向方向と直交する第二対向方向に対向する。テーパー面２１−１は、伸縮胴部１０の収縮方向（Ｅ２方向）の端部から伸長方向（Ｅ１方向）に外側から内側に向けて傾斜する。非テーパー面２２−１は、傾斜していない面である。外周側湾曲面２３Ａ１は、外側に凸状の湾曲面であり、ケーブルが巻胴部２に巻回された巻回状態でケーブルと接触する面である。外周側湾曲面２３Ｂ１は、内側に凹状の湾曲面である。外周側湾曲面２３Ａ１は、伸縮胴部１０の収縮方向（Ｅ２方向）の端部から伸長方向（Ｅ１方向）に外側から内側に向けて傾斜する。 The outer peripheral surface 20 of the tubular member 11 is composed of a tapered surface 21-1, a non-tapered surface 22-1, and a pair of outer peripheral side curved surfaces 23A1, 23B1. The tapered surface 21-1 and the non-tapered surface 22-1 face each other in the first facing direction orthogonal to the extending direction of the tubular member 11, and are connected with the curved surfaces 23A1, 23B1 on the outer peripheral side interposed therebetween. .. The pair of outer peripheral curved surfaces 23A1, 23B1 face each other in the extending direction and the second facing direction orthogonal to the first facing direction. The tapered surface 21-1 is inclined from the end of the telescopic body 10 in the contraction direction (E2 direction) to the extension direction (E1 direction) from the outside to the inside. The non-tapered surface 22-1 is a surface that is not inclined. The outer peripheral side curved surface 23A1 is a curved surface that is convex outward, and is a surface that comes into contact with the cable in a wound state in which the cable is wound around the winding body 2. The outer peripheral side curved surface 23B1 is an inwardly concave curved surface. The outer peripheral curved surface 23A1 inclines from the end of the telescopic body 10 in the contraction direction (E2 direction) to the extension direction (E1 direction) from the outside to the inside.

筒状部材１１の内周面３０は、一対の非テーパー面３２−１Ｃ，３２−１Ｄと、一対の内周側湾曲面３３Ａ１，３３Ｂ１とで構成される。一対の非テーパー面３２−１Ｃ，３２−１Ｄとは、筒状部材１１の上記第一対向方向に対向し、かつ各内周側湾曲面３３Ａ１，３３Ｂ１を挟んで連結されている。一対の外周側湾曲面３３Ａ１，３３Ｂ１は、上記第二対向方向に対向する。内周側湾曲面３３Ａ１は、外側に凸状の湾曲面であり、外周側湾曲面２３Ａ１と同一方向に凸状に形成される。内周側湾曲面３３Ｂ１は、内側に凹状の湾曲面であり、外周側湾曲面２３Ｂ１と同一方向に凹状に形成される。 The inner peripheral surface 30 of the tubular member 11 is composed of a pair of non-tapered surfaces 32-1C and 32-1D and a pair of inner peripheral side curved surfaces 33A1 and 33B1. The pair of non-tapered surfaces 32-1C and 32-1D face each other in the first facing direction of the tubular member 11, and are connected to each other with the inner peripheral side curved surfaces 33A1 and 33B1 interposed therebetween. The pair of outer peripheral curved surfaces 33A1 and 33B1 face each other in the second facing direction. The inner peripheral side curved surface 33A1 is an outwardly convex curved surface, and is formed to be convex in the same direction as the outer peripheral side curved surface 23A1. The inner peripheral side curved surface 33B1 is an inwardly concave curved surface, and is formed to be concave in the same direction as the outer peripheral side curved surface 23B1.

筒状部材１２の外周面２０は、テーパー面２１−２と、非テーパー面２２−２と、一対の外周側湾曲面２３Ａ２，２３Ｂ２とで構成される。テーパー面２１−２と非テーパー面２２−２とは、筒状部材１２の延在方向と直交する第一対向方向に対向し、かつ各外周側湾曲面２３Ａ２，２３Ｂ２を挟んで連結されている。一対の外周側湾曲面２３Ａ２，２３Ｂ２は、上記延在方向及び上記第一対向方向と直交する第二対向方向に対向する。テーパー面２１−２は、外周側テーパー面の一例であり、伸縮胴部１０の収縮方向（Ｅ２方向）の端部から伸長方向（Ｅ１方向）に外側から内側に向けて傾斜する。非テーパー面２２−２は、傾斜していない面である。外周側湾曲面２３Ａ２は、外側に凸状の湾曲面であり、ケーブルが巻胴部２に巻回された巻回状態でケーブルと接触する面である。外周側湾曲面２３Ｂ２は、内側に凹状の湾曲面である。外周側湾曲面２３Ａ２は、伸縮胴部１０の収縮方向（Ｅ２方向）の端部から伸長方向（Ｅ１方向）に外側から内側に向けて傾斜する。 The outer peripheral surface 20 of the tubular member 12 is composed of a tapered surface 21-2, a non-tapered surface 22-2, and a pair of outer peripheral side curved surfaces 23A2 and 23B2. The tapered surface 21-2 and the non-tapered surface 22-2 face each other in the first facing direction orthogonal to the extending direction of the tubular member 12, and are connected with the outer peripheral side curved surfaces 23A2 and 23B2 interposed therebetween. .. The pair of outer peripheral curved surfaces 23A2 and 23B2 face each other in the extending direction and the second facing direction orthogonal to the first facing direction. The tapered surface 21-2 is an example of an outer peripheral side tapered surface, and is inclined from the end of the telescopic body 10 in the contraction direction (E2 direction) to the extension direction (E1 direction) from the outside to the inside. The non-tapered surface 22-2 is a surface that is not inclined. The outer peripheral side curved surface 23A2 is a curved surface that is convex outward, and is a surface that comes into contact with the cable in a wound state in which the cable is wound around the winding body 2. The outer peripheral side curved surface 23B2 is an inwardly concave curved surface. The outer peripheral curved surface 23A2 inclines from the end of the telescopic body 10 in the contraction direction (E2 direction) to the extension direction (E1 direction) from the outside to the inside.

筒状部材１２の内周面３０は、一対の非テーパー面３２−２Ｃ，３２−２Ｄと、一対の内周側湾曲面３３Ａ２，３３Ｂ２とで構成される。一対の非テーパー面３２−２Ｃ，３２−２Ｄとは、筒状部材１２の上記第一対向方向に対向し、かつ各内周側湾曲面３３Ａ２，３３Ｂ２を挟んで連結されている。一対の外周側湾曲面３３Ａ２，３３Ｂ２は、上記第二対向方向に対向する。内周側湾曲面３３Ａ２は、外側に凸状の湾曲面であり、外周側湾曲面２３Ａ２と同一方向に凸状に形成される。内周側湾曲面３３Ｂ２は、内側に凹状の湾曲面であり、外周側湾曲面２３Ｂ２と同一方向に凹状に形成される。内周側湾曲面３３Ａ２は、伸縮胴部１０の収縮方向（Ｅ２方向）の端部から伸長方向（Ｅ１方向）に外側から内側に向けて傾斜する。 The inner peripheral surface 30 of the tubular member 12 is composed of a pair of non-tapered surfaces 32-2C and 32-2D and a pair of inner peripheral side curved surfaces 33A2 and 33B2. The pair of non-tapered surfaces 32-2C and 32-2D face each other in the first facing direction of the tubular member 12, and are connected to each other with the inner peripheral side curved surfaces 33A2 and 33B2 interposed therebetween. The pair of outer peripheral curved surfaces 33A2 and 33B2 face each other in the second facing direction. The inner peripheral side curved surface 33A2 is an outwardly convex curved surface, and is formed to be convex in the same direction as the outer peripheral side curved surface 23A2. The inner peripheral side curved surface 33B2 is an inwardly concave curved surface, and is formed to be concave in the same direction as the outer peripheral side curved surface 23B2. The inner peripheral side curved surface 33A2 inclines from the end of the telescopic body 10 in the contraction direction (E2 direction) to the extension direction (E1 direction) from the outside to the inside.

筒状部材１３の外周面２０は、一対の非テーパー面２２−３と、一対の外周側湾曲面２３Ａ３，２３Ｂ３とで構成される。一対の非テーパー面２２−３は、上記第一対向方向に対向し、かつ各外周側湾曲面２３Ａ３，２３Ｂ３を挟んで連結されている。一対の外周側湾曲面２３Ａ３，２３Ｂ３は、上記第二対向方向に対向する。 The outer peripheral surface 20 of the tubular member 13 is composed of a pair of non-tapered surfaces 22-3 and a pair of outer peripheral side curved surfaces 23A3 and 23B3. The pair of non-tapered surfaces 22-3 face each other in the first facing direction and are connected with the outer peripheral side curved surfaces 23A3 and 23B3 interposed therebetween. The pair of outer peripheral curved surfaces 23A3 and 23B3 face each other in the second facing direction.

筒状部材１３の内周面３０は、一対の非テーパー面３２−３Ｃ，３２−３Ｄと、一対の内周側湾曲面３３Ａ３，３３Ｂ３とで構成される。一対の非テーパー面３２−３Ｃ，３２−３Ｄは、上記第一対向方向に対向し、かつ各内周側湾曲面３３Ａ３，３３Ｂ３を挟んで連結されている。一対の内周側湾曲面３３Ａ３，３３Ｂ３は、上記第二対向方向に対向する。内周側湾曲面３３Ａ３は、外側に凸状の湾曲面であり、外周側湾曲面２３Ａ３と同一方向に凸状に形成される。内周側湾曲面３３Ｂ３は、内側に凹状の湾曲面であり、外周側湾曲面２３Ｂ３と同一方向に凹状に形成される。内周側湾曲面３３Ａ３は、伸縮胴部１０の収縮方向（Ｅ２方向）の端部から伸長方向（Ｅ１方向）に外側から内側に向けて傾斜する。 The inner peripheral surface 30 of the tubular member 13 is composed of a pair of non-tapered surfaces 32-3C and 32-3D and a pair of inner peripheral side curved surfaces 33A3 and 33B3. The pair of non-tapered surfaces 32-3C and 32-3D face each other in the first facing direction and are connected with the inner peripheral side curved surfaces 33A3 and 33B3 interposed therebetween. The pair of inner peripheral curved surfaces 33A3 and 33B3 face each other in the second facing direction. The inner peripheral side curved surface 33A3 is an outwardly convex curved surface, and is formed to be convex in the same direction as the outer peripheral side curved surface 23A3. The inner peripheral side curved surface 33B3 is an inwardly concave curved surface, and is formed to be concave in the same direction as the outer peripheral side curved surface 23B3. The inner peripheral side curved surface 33A3 inclines from the end of the telescopic body 10 in the contraction direction (E2 direction) to the extension direction (E1 direction) from the outside to the inside.

筒状部材１１のテーパー面２１−１は、筒状部材１１が筒状部材１２の内部空間Ｓ２に収容された収容状態において、筒状部材１２の非テーパー面３２−２Ｃに対向し、かつ、筒状部材１１の非テーパー面２２−１は、筒状部材１２の非テーパー面３２−１Ｄに対向する。 The tapered surface 21-1 of the tubular member 11 faces the non-tapered surface 32-2C of the tubular member 12 and faces the non-tapered surface 32-2C of the tubular member 12 in a housed state in which the tubular member 11 is accommodated in the internal space S2 of the tubular member 12. The non-tapered surface 22-1 of the tubular member 11 faces the non-tapered surface 32-1D of the tubular member 12.

筒状部材１１の外周側湾曲面２３Ａ１は、筒状部材１１が筒状部材１２の内部空間Ｓ２に収容された収容状態において、筒状部材１２の内周側湾曲面３３Ａ２に対向し、かつ、筒状部材１１の外周側湾曲面２３Ｂ１は、筒状部材１２の内周側湾曲面３３Ｂ２に対向する。 The outer peripheral curved surface 23A1 of the tubular member 11 faces the inner peripheral curved surface 33A2 of the tubular member 12 and faces the inner peripheral curved surface 33A2 of the tubular member 12 in a housed state in which the tubular member 11 is accommodated in the internal space S2 of the tubular member 12. The outer peripheral curved surface 23B1 of the tubular member 11 faces the inner peripheral curved surface 33B2 of the tubular member 12.

筒状部材１２のテーパー面２１−２は、筒状部材１２が筒状部材１３の内部空間Ｓ３に収容された収容状態において、筒状部材１３の非テーパー面３２−３Ｃに対向し、かつ、筒状部材１２の非テーパー面２２−２は、筒状部材１３の非テーパー面３２−３Ｄに対向する。 The tapered surface 21-2 of the tubular member 12 faces the non-tapered surface 32-3C of the tubular member 13 and faces the non-tapered surface 32-3C of the tubular member 13 in a housed state in which the tubular member 12 is accommodated in the internal space S3 of the tubular member 13. The non-tapered surface 22-2 of the tubular member 12 faces the non-tapered surface 32-3D of the tubular member 13.

筒状部材１２の外周側湾曲面２３Ａ２は、筒状部材１２が筒状部材１３の内部空間Ｓ３に収容された収容状態において、筒状部材１３の内周側湾曲面３３Ａ３に対向し、かつ、筒状部材１２の外周側湾曲面２３Ｂ２は、筒状部材１３の内周側湾曲面３３Ｂ３に対向する。 The outer peripheral side curved surface 23A2 of the tubular member 12 faces the inner peripheral side curved surface 33A3 of the tubular member 13 and faces the inner peripheral side curved surface 33A3 of the tubular member 13 in a housed state in which the tubular member 12 is housed in the internal space S3 of the tubular member 13. The outer peripheral curved surface 23B2 of the tubular member 12 faces the inner peripheral curved surface 33B3 of the tubular member 13.

筒状部材１１，１２は、それぞれがロック機構２５を有するが、筒状部材１３は、ロック機構を有していない。ロック機構２５は、外周面２０のうち、テーパー面２１−１，２１−２にのみ設けられており、非テーパー面２２−１，２２−２、外周側湾曲面２３Ａ１〜２３Ａ３，２３Ｂ１〜２３Ｂ３には、ロック機構２５が設けられていない。 The tubular members 11 and 12 each have a locking mechanism 25, but the tubular member 13 does not have a locking mechanism. The lock mechanism 25 is provided only on the tapered surfaces 21-1,21-2 of the outer peripheral surfaces 20, and is provided on the non-tapered surfaces 22-1,22-2 and the outer peripheral side curved surfaces 23A1 to 23A3, 23B1 to 23B3. Is not provided with a lock mechanism 25.

ロック機構２５は、オルタネイト動作を行うものである。オルタネイト動作とは、例えば、一度押しボタン４０を押した後は、押す力を取り除いても動作状態を維持し続け、さらにもう一度押しボタン４０を押すことによって元の状態に復帰する動作である。ロック機構２５は、図９の（Ａ）、図９の（Ｂ）に示すように、押しボタン４０と、支持棒４１と、オルタネイト機構部４２とを有する。 The lock mechanism 25 performs an alternate operation. The alternate operation is, for example, an operation in which after pressing the push button 40 once, the operating state is maintained even if the pushing force is removed, and then the push button 40 is pressed again to return to the original state. As shown in (A) of FIG. 9 and (B) of FIG. 9, the lock mechanism 25 includes a push button 40, a support rod 41, and an alternate mechanism portion 42.

押しボタン４０は、凸部の一例であり、内側筒状部材（１１，１２）のテーパー面（２１−１，２１−２）から突出し、少なくとも外側筒状部材（１２，１３）の内周よりも外側に延在する。押しボタン４０は、具体的には、支持棒４１の延在方向の一方の端部に固定され、支持棒４１を介してオルタネイト機構部４２に接続されている。オルタネイト機構部４２は、ピン部４３と、底板４４と、コイルばね４５と、鋸歯状部４６とを含んで構成される。これらは、例えば円筒状筐体に収容される。なお、オルタネイト機構部４２は、例示した構成に限定されるものではなく、部分的に省略されているものもある。 The push button 40 is an example of a convex portion, which protrudes from the tapered surface (21-1,1-2) of the inner tubular member (11, 12) and at least from the inner circumference of the outer tubular member (12, 13). Also extends to the outside. Specifically, the push button 40 is fixed to one end of the support rod 41 in the extending direction, and is connected to the alternate mechanism portion 42 via the support rod 41. The alternate mechanism portion 42 includes a pin portion 43, a bottom plate 44, a coil spring 45, and a serrated portion 46. These are housed in, for example, a cylindrical enclosure. The alternate mechanism portion 42 is not limited to the illustrated configuration, and may be partially omitted.

ピン部４３は、一端が支持棒４１の途中に係止され、他端が鋸歯状部４６に対して下方側から当接するように構成されている。支持棒４１は、上端が押しボタン４０に嵌合され、下端が底板４４に係止されている。コイルばね４５は、上端が底板４４に係止され、下端が円筒状筐体の底壁に係止されており、底板４４を介して支持棒４１を上下方向に付勢する。ピン部４３は、支持棒４１と共に、コイルばね４５の収縮／反発作用によって上下に動くものである。鋸歯状部４６は、歯の先部分と根元部分に第一切り欠き部４６ａと第二切り欠き部４６ｂとを有する。鋸歯状部４６の歯の部分がピン部４３のガイドとして機能し、第一切り欠き部４６ａ、第二切り欠き部４６ｂがピン部４３の停止位置として機能する。 One end of the pin portion 43 is locked in the middle of the support rod 41, and the other end is configured to abut the serrated portion 46 from the lower side. The upper end of the support rod 41 is fitted to the push button 40, and the lower end is locked to the bottom plate 44. The upper end of the coil spring 45 is locked to the bottom plate 44, and the lower end is locked to the bottom wall of the cylindrical housing, and the support rod 41 is urged in the vertical direction via the bottom plate 44. The pin portion 43 moves up and down together with the support rod 41 by the contraction / repulsion action of the coil spring 45. The serrated portion 46 has a first notch portion 46a and a second notch portion 46b at the tip portion and the root portion of the tooth. The tooth portion of the serrated portion 46 functions as a guide for the pin portion 43, and the first notch portion 46a and the second notch portion 46b function as stop positions for the pin portion 43.

ロック機構２５は、押しボタン４０が押下されると、支持棒４１を介して底板４４がコイルばね４５を圧縮し、ピン部４３が第一切り欠き部４６ａの位置で停止する（図９の（Ａ））。押しボタン４０は、押し下げられた位置で維持され、ロック機構２５がロック状態となる。再度、押しボタン４０が押下されると、ピン部４３が第一切り欠き部４６ａの位置から下方向に移動する。その後、ピン部４３は、第一切り欠き部４６ａと第二切り欠き部４６ｂとの間の歯の先端を乗り越え、コイルばね４５の付勢力により支持棒４１が押し上げられ鋸歯状部４６に沿って第二切り欠き部４６ｂに移動し、第二切り欠き部４６ｂで停止する（図９の（Ｂ））。押しボタン４０は、押し下げられる前の位置まで戻り、その位置が維持され、ロック機構２５がロック解除状態となる。 When the push button 40 is pressed, the lock mechanism 25 compresses the coil spring 45 by the bottom plate 44 via the support rod 41, and the pin portion 43 stops at the position of the first notch portion 46a ((FIG. 9). A)). The push button 40 is maintained at the pushed down position, and the lock mechanism 25 is locked. When the push button 40 is pressed again, the pin portion 43 moves downward from the position of the first notch portion 46a. After that, the pin portion 43 gets over the tip of the tooth between the first notch portion 46a and the second notch portion 46b, and the support rod 41 is pushed up by the urging force of the coil spring 45 along the serrated portion 46. It moves to the second notch 46b and stops at the second notch 46b ((B) in FIG. 9). The push button 40 returns to the position before being pushed down, the position is maintained, and the lock mechanism 25 is in the unlocked state.

ケーブルが巻回されていないケーブルドラム１において、巻胴部２を収縮する場合、作業者は、各伸縮胴部１０の２つのロック機構２５を操作してロック解除状態からロック状態にする。この場合、作業者は、各ロック機構２５の押しボタン４０を押し込んで、押しボタン４０が筒状部材１２の内周より外側に突出した突出状態から、押しボタン４０が筒状部材１２の内周より内側に埋没した埋没状態に切り替える。このとき、押しボタン４０の上端は、例えば、図１０の（Ａ）に示すように、押しボタン４０周囲のテーパー面２１−１，２１−２と同一面上に位置する。 When the winding body 2 is contracted in the cable drum 1 in which the cable is not wound, the operator operates the two locking mechanisms 25 of each telescopic body 10 to change from the unlocked state to the locked state. In this case, the operator pushes the push button 40 of each lock mechanism 25, and the push button 40 protrudes outward from the inner circumference of the tubular member 12, and the push button 40 protrudes outward from the inner circumference of the tubular member 12. Switch to the buried state buried inside. At this time, the upper end of the push button 40 is located on the same surface as the tapered surfaces 21-1 and 21-2 around the push button 40, for example, as shown in FIG. 10 (A).

次に、作業者は、一対の鍔部３のうち、一方を動かないように固定し、他方を軸方向の一方の鍔部３側に突き当たるまで押し込んでいく。このとき、各伸縮胴部１０は、図４の（Ａ）、図４の（Ｂ）に示す伸長状態から、図３に示す収縮状態に変化する。なお、各伸縮胴部１０が収縮状態となっても一対の鍔部３が軸方向に接触するわけではなく、巻胴部２の軸方向の長さが短くなることから、収縮状態であってもケーブルドラム１にケーブル等を巻回することは可能である。 Next, the operator fixes one of the pair of collars 3 so as not to move, and pushes the other until it hits one of the flanges 3 in the axial direction. At this time, each telescopic body portion 10 changes from the extended state shown in FIGS. 4A and 4B to the contracted state shown in FIG. Even if each of the telescopic body portions 10 is in the contracted state, the pair of flange portions 3 do not come into contact with each other in the axial direction, and the length of the winding body portion 2 in the axial direction is shortened. It is also possible to wind a cable or the like around the cable drum 1.

ケーブルが巻回されていないケーブルドラム１において、巻胴部２を伸長する場合、作業者は、一対の鍔部３のうち、一方を動かないように固定し、他方を軸方向外側に引き出していく。このとき、各伸縮胴部１０は、図３に示す収縮状態から図４の（Ａ）、図４の（Ｂ）に示す伸長状態に変化する。収縮状態で内側と外側とで隣り合う２つの筒状部材のうち、内側に配置される内側筒状部材の外周面の一部と外側に配置される外側筒状部材の内周面の一部とが当接することにより伸縮胴部１０の伸長方向（Ｅ１）への伸長を規制する。例えば、収縮状態で筒状部材１１の外周側湾曲面２３Ａ１の一部と筒状部材１２の内周側湾曲面３３Ａ２の一部とが当接することにより伸縮胴部１０の伸長方向（Ｅ１）への伸長を規制する。また、収縮状態で筒状部材１２の外周側湾曲面２３Ａ２の一部と筒状部材１３の内周側湾曲面３３Ａ３の一部とが当接することにより伸縮胴部１０の伸長方向（Ｅ１）への伸長を規制する。これにより、伸縮胴部１０を最大に引き出した位置で筒状部材同士が干渉し、伸長方向への伸長を規制することができる。 When extending the winding body 2 in the cable drum 1 in which the cable is not wound, the operator fixes one of the pair of collars 3 so as not to move, and pulls the other outward in the axial direction. I will go. At this time, each telescopic body portion 10 changes from the contracted state shown in FIG. 3 to the extended state shown in FIGS. 4 (A) and 4 (B). Of the two tubular members that are adjacent to each other on the inside and outside in the contracted state, a part of the outer peripheral surface of the inner tubular member arranged inside and a part of the inner peripheral surface of the outer tubular member arranged outside. The extension of the telescopic body 10 in the extension direction (E1) is restricted by the contact with the. For example, in the contracted state, a part of the outer peripheral side curved surface 23A1 of the tubular member 11 and a part of the inner peripheral side curved surface 33A2 of the tubular member 12 come into contact with each other in the extension direction (E1) of the telescopic body portion 10. Regulate the growth of. Further, in the contracted state, a part of the outer peripheral side curved surface 23A2 of the tubular member 12 and a part of the inner peripheral side curved surface 33A3 of the tubular member 13 come into contact with each other in the extension direction (E1) of the telescopic body portion 10. Regulate the growth of. As a result, the tubular members interfere with each other at the position where the telescopic body portion 10 is pulled out to the maximum, and the extension in the extension direction can be restricted.

次に、作業者は、各伸縮胴部１０の２つのロック機構２５が外側筒状部材に隠れることなく、操作可能な状態となったことを確認し、各ロック機構２５を操作してロック状態からロック解除状態にする。この場合、作業者は、各ロック機構２５の押しボタン４０を再度押し込んで、押しボタン４０が筒状部材１２の内周より内側に埋没した埋没状態から、押しボタン４０が筒状部材１２の内周より外側に突出した突出状態に切り替える。このとき、押しボタン４０の上端は、図１０の（Ｂ）に示すように、押しボタン４０周囲のテーパー面２１−１，２１−２より上側（径方向外側）に位置する。以上により、作業者は、工具を使って難しい作業を行うことなく、ケーブルが巻回されていないケーブルドラム１全体の容積を小さくすることができる。 Next, the operator confirms that the two lock mechanisms 25 of each telescopic body 10 are in an operable state without being hidden by the outer tubular member, and operates each lock mechanism 25 to be in the locked state. To unlock from. In this case, the operator pushes the push button 40 of each lock mechanism 25 again, and the push button 40 is buried inside the inner circumference of the tubular member 12, and the push button 40 is inside the tubular member 12. Switch to a protruding state that protrudes outward from the circumference. At this time, as shown in FIG. 10B, the upper end of the push button 40 is located above the tapered surfaces 21-1, 1-2 around the push button 40 (outward in the radial direction). As described above, the operator can reduce the volume of the entire cable drum 1 in which the cable is not wound without performing difficult work using a tool.

以上説明したように、本実施形態に係るケーブルドラム１は、巻胴部２が、軸方向に伸縮自在に形成され、円環状に離間して配置された３つの伸縮胴部１０で構成される。各伸縮胴部１０は、３つの筒状部材１１〜１３を有し、３つの筒状部材１１〜１３は、収縮状態において、外側の筒状部材の内部空間に内側の筒状部材が収容され、伸縮胴部１０が伸長した伸長状態で、内側筒状部材を外側の外側筒状部材に係止して内側筒状部材の収縮方向への移動を規制するロック機構２５を有する。ロック機構２５は、内側筒状部材のテーパー面２１−１，２１−２から突出し、外側筒状部材の内周よりも外側に延在する凸部を有し、凸部が外側筒状部材の内周より外側に突出した突出状態と、凸部が外側筒状部材の内周より内側に埋没した埋没状態とに切り替わる。 As described above, in the cable drum 1 according to the present embodiment, the winding body portion 2 is formed so as to be expandable and contractible in the axial direction, and is composed of three telescopic body portions 10 arranged apart from each other in an annular shape. .. Each telescopic body 10 has three tubular members 11 to 13, and the three tubular members 11 to 13 have an inner tubular member housed in the inner space of the outer tubular member in a contracted state. The telescopic body portion 10 has a lock mechanism 25 that locks the inner tubular member to the outer outer tubular member and regulates the movement of the inner tubular member in the contraction direction in the extended state. The lock mechanism 25 has a convex portion that protrudes from the tapered surfaces 21-1,21-2 of the inner tubular member and extends outward from the inner circumference of the outer tubular member, and the convex portion is the outer tubular member. It switches between a protruding state protruding outward from the inner circumference and a buried state in which the convex portion is buried inside the inner circumference of the outer tubular member.

上記構成により、簡易な構成で巻胴部を容易に伸縮することができ、長物が巻回されていないケーブルドラムを短期間で用意することできる。また、特許文献１に比べて、部品点数を少なくして巻胴部の軸方向の伸縮を実現することができ、部品コストを安くすることができる。 With the above configuration, the winding body can be easily expanded and contracted with a simple configuration, and a cable drum in which a long object is not wound can be prepared in a short period of time. Further, as compared with Patent Document 1, the number of parts can be reduced and the winding body can be expanded and contracted in the axial direction, and the cost of parts can be reduced.

また、本実施形態に係るケーブルドラム１は、３つの伸縮胴部１０が、軸方向の一方に伸長するものと他方に伸長するものとが円環状に離間して交互に配置されている。これにより、巻胴部２が３つの伸縮胴部１０で構成されていても、巻胴部２にケーブルを巻く際に、当該ケーブルが巻胴部２の軸方向の一方に偏ることなく、ケーブルを巻回することができる。この結果、３つの伸縮胴部１０のうち、軸方向の一方に伸長するものを円環状に離間して配置したものと比較して、作業者のケーブルの巻きやすさを向上させることができる。 Further, in the cable drum 1 according to the present embodiment, three telescopic body portions 10 are arranged alternately with one extending in one axial direction and one extending in the other in an annular shape. As a result, even if the winding body 2 is composed of three telescopic body 10, the cable is not biased to one of the axial directions of the winding body 2 when the cable is wound around the winding body 2. Can be wound around. As a result, it is possible to improve the ease of winding the cable by the operator as compared with the three telescopic body portions 10 that extend in one direction in the axial direction and are arranged apart from each other in an annular shape.

また、本実施形態に係るケーブルドラム１は、各筒状部材１１，１２，１３は、ケーブルが巻胴部２に巻回された巻回状態で当該ケーブルと接触する面が、外側に凸状の湾曲面である。これにより、ケーブルと接触する筒状部材の接触面に角部がなくなるので、ケーブル巻回時に、当該ケーブルを保護することができる。 Further, in the cable drum 1 according to the present embodiment, each of the tubular members 11, 12, and 13 has a surface that comes into contact with the cable in a wound state in which the cable is wound around the winding body portion 2 and is convex outward. It is a curved surface of. As a result, since there are no corners on the contact surface of the tubular member that comes into contact with the cable, the cable can be protected when the cable is wound.

また、本実施形態に係るケーブルドラム１は、外側に配置される外側筒状部材は、少なくとも内周面３０のうち外周側テーパー面（２３Ａ１，２３Ａ２）と対向する面に伸縮胴部１０から伸長方向（Ｅ１）に外側から内側に向けて傾斜する内周側テーパー面（３３Ａ２、３３Ａ３）を有する。収縮状態で内側と外側とで隣り合う２つの筒状部材（１１，１２、または、１２，１３）のうち、内側に配置される内側筒状部材の外周側テーパー面の一部と外側に配置される外側筒状部材の内周側テーパー面の一部とが当接することにより伸縮胴部１０の伸長方向（Ｅ１）への伸長を規制する。これにより、内側筒状部材が外側筒状部材から伸長方向において外れることを抑制することができる。 Further, in the cable drum 1 according to the present embodiment, the outer tubular member arranged on the outer side extends from the telescopic body portion 10 to at least the inner peripheral surface 30 facing the outer peripheral side tapered surface (23A1, 23A2). It has an inner peripheral side tapered surface (33A2, 33A3) that inclines from the outside to the inside in the direction (E1). Of the two tubular members (11, 12, or 12, 13) that are adjacent to each other on the inside and outside in the contracted state, the inner tubular member is arranged on a part of the outer peripheral side tapered surface and on the outside. The extension of the telescopic body 10 in the extension direction (E1) is restricted by contacting a part of the inner peripheral side tapered surface of the outer tubular member. As a result, it is possible to prevent the inner tubular member from coming off from the outer tubular member in the extending direction.

なお、上記実施形態では、ロック機構２５は、オルタネイト動作を行うものであれば、上述した構成に限定されるものではない。例えば、ハートカム方式、回転カム方式、ラチェットカム方式等の各種方式でオルタネイト動作が実現できればよい。ロック機構２５は、例えば、特開２００９−３２４０２号公報に記載された技術を用いてもよい。 In the above embodiment, the lock mechanism 25 is not limited to the above-described configuration as long as it performs an alternate operation. For example, it suffices if the alternate operation can be realized by various methods such as a heart cam method, a rotary cam method, and a ratchet cam method. As the locking mechanism 25, for example, the technique described in Japanese Patent Application Laid-Open No. 2009-32402 may be used.

また、上記実施形態では、巻胴部２は、３つの伸縮胴部１０で構成されているが、これに限定されるものではなく、４つ以上の伸縮胴部１０で構成されていてもよい。 Further, in the above embodiment, the winding body portion 2 is composed of three telescopic body portions 10, but the present invention is not limited to this, and the winding body portion 2 may be composed of four or more telescopic body portions 10. ..

また、上記実施形態では、各伸縮胴部１０は、当該伸縮胴部１０を構成する筒状部材１１〜１３の断面形状が図６の（Ａ）、図８の（Ａ）に示す弓形形状となっているが、これに限定されるものではない。例えば、筒状部材１１〜１３において、ケーブルが巻胴部２に巻回された巻回状態でケーブルと接触する面が湾曲するものであれば、どのような断面形状であってもよい。 Further, in the above embodiment, each telescopic body portion 10 has a cross-sectional shape of the tubular members 11 to 13 constituting the telescopic body portion 10 having an arch shape shown in FIGS. 6A and 8A. However, it is not limited to this. For example, the tubular members 11 to 13 may have any cross-sectional shape as long as the surface in contact with the cable is curved in the wound state in which the cable is wound around the winding body 2.

また、上記実施形態では、各伸縮胴部１０は、３つの筒状部材１１〜１３で構成されているが、これに限定されるものではなく、巻回する長物のサイズや種類によって、３つ以上であっても２つであってもよい。 Further, in the above embodiment, each telescopic body portion 10 is composed of three tubular members 11 to 13, but the present invention is not limited to this, and there are three depending on the size and type of the long object to be wound. It may be the above or two.

１ケーブルドラム
２巻胴部
３鍔部
１０伸縮胴部
１１，１２，１３筒状部材
２０外周面
２５ロック機構
３０内周面
４０押しボタン
４２オルタネイト機構部
Ｓ１，Ｓ２，Ｓ３内部空間 1 Cable drum 2 Winding body 3 Flange part 10 Telescopic body part 11, 12, 13 Cylindrical member 20 Outer peripheral surface 25 Lock mechanism 30 Inner peripheral surface 40 Push button 42 Alternate mechanism part S1, S2, S3 Internal space

Claims

The winding body around which the cable is wound and
A pair of collars provided at both ends of the winding body in the axial direction are provided.
The winding body
It is composed of a plurality of telescopic cylinders that are formed so as to be stretchable in the axial direction and are arranged apart from each other in an annular shape.
Each telescopic body has a plurality of tubular members and has a plurality of tubular members.
The plurality of tubular members
In the contracted state in which the telescopic body is contracted, the inner tubular member is housed in the inner space of the outer tubular member.
It has a locking mechanism that locks the inner tubular member to the outer outer tubular member to regulate the movement of the inner tubular member in the contraction direction in the extended state in which the telescopic body portion is extended.
The lock mechanism is
It has a convex portion that protrudes from the outer peripheral surface of the inner tubular member and extends at least outward from the inner circumference of the outer tubular member.
The convex portion is switched between a protruding state in which the convex portion protrudes outward from the inner circumference of the outer tubular member and a buried state in which the convex portion is buried inward from the inner circumference of the outer tubular member.
A cable drum that features that.

The plurality of the telescopic body portions
Those extending in one axial direction and those extending in the other direction are arranged alternately at intervals in an annular shape.
The cable drum according to claim 1.

Each of the tubular members
The surface of the cable that comes into contact with the cable in a wound state in which the cable is wound around the winding body is an outwardly convex curved surface.
The cable drum according to claim 1 or 2.