JP3642936B2

JP3642936B2 - Binder tool

Info

Publication number: JP3642936B2
Application number: JP32051397A
Authority: JP
Inventors: 克己金田
Original assignee: 克己金田
Priority date: 1997-11-07
Filing date: 1997-11-07
Publication date: 2005-04-27
Anticipated expiration: 2017-11-07
Also published as: JPH11139067A

Description

【０００１】
【発明の属する技術分野】
本発明は、固定側及び可動側の各半リングを合致させる形式のバインダー用具に関し、詳しくは、可動側の半リングをカム駆動によって開閉させるための構造に関する。
【０００２】
【従来の技術】
従来、固定側及び可動側の各部材に形成した各半リングを合致させる形式のバインダー用具では、閉鎖時には各半リングを合致させた後、例えば何れかの部材の端部に設けた錠止構造部分を操作して各半リングをこの合致状態に固定し、そしてバインダー用具を開く時には、先ずこの錠止構造部を開放し、次いで可動側部材を廻動させるといった最低２回の操作が必要となっている。
また、摺動部材により半リングを開閉させる形式のバインダー用具では、摺動部材の手前側に操作用の把手或は指掛けを設け、これを引っ張ることにより半リングを開放させ、半リングを閉じる時には把手を押し込むようにしている。しかしながら、把手は構造的に複雑であることから成形金型も複雑化し従ってその分、製造コストが上昇する。またそうした把手は、小型のバインダー用具では用紙綴じ部に接触しないようにするために手前側に突出させる必要があり、これがバインダー用具小型化の障害となる。
【０００３】
【発明が解決しようとする課題】
本発明は、上述したような押し引き式等の把手が無く、しかもワンアクションで開閉することのできる開閉機構を有するバインダー用具を提供することである。
【０００４】
【課題を解決するための手段】
本発明によれば、複数の半リング（１４）を長手方向に平行に起立させた固定板（１０）と、該固定板に廻動自在に取り付けられ、固定板の半リング（１４）と合致して一続きのリングを形成する複数の半リング（２０）を長手方向に平行に起立させた可動体（１２）とを組み合わせてなるプラスチック製のバインダー用具（１００）であって、
可動体（１２）が該可動体の下部に一体的に設けた凸部（５６）を有し、
固定板（１０）と可動体（１２）との間部分で、固定板によって拘束されつつ所定の長さ範囲を往復摺動する摺動板（４０）にして、可動体の凸部（５６）を係入させるようにした長溝（４８）にして、該長溝（４８）が、凸部（５６）を、各半リング（１４、２０）を合致させる位置に錠止するための錠止部（５０）と、各半リング（１４、２０）を開放させる位置に固定する開放部（５２）と、錠止部（５０）及び開放部（５２）間の移行部（５４）とを含んでいる長溝を有する摺動板を有し、
摺動板（４０）を往復摺動させ、可動体（１２）の凸部（５６）を摺動板の長溝（４８）に沿って移動させると同時に可動体を軸部（１８）を中心とする所定範囲を廻動させることにより各前記半リング（１４、２０）を開閉させるようにしたバインダー用具が提供される。
【０００５】
１実施例では摺動板（４０）の長溝（４８）が、長溝に沿って変化する勾配を有し可動体（１２）の凸部（５６）の周囲側面と係合する溝壁（５６）と、凸部を可動体の軸部（１８）を中心として廻動させるような略Ｓ字形に屈曲した平面形状とを有し、また、摺動板（４０）が固定板（１０）よりも長くされ、往復摺動の各限界位置では、何れか一方の端部（６４、６６）が固定板の縁部を越えて突出され、突出された側の端部が次ぎの往復動作を与えるための押し込み端部を構成する。
また更には長溝（４８）が、凸部（５６）を、各半リング（１４、２０）を合致させる位置に錠止するための錠止部（５０）と、各半リング（１４、２０）を開放させる位置に固定する開放部（５２）と、錠止部（５０）及び開放部（５２）間の移行部（５４）とを含み、凸部（５６）を可動体の中央下部に該可動体と一体的に設け、摺動板（４０）の長溝（４８）は該摺動板の中央位置に設けることができる。
【０００６】
【発明の実施の形態】
以下に、図１から図７を参照して本発明を詳しく説明する。
図１及び図２には本発明の第１実施例のバインダー用具を構成する３つの部材が示されている。これら３つの部材の内の２つは、図１に示す固定板１０と、図２に示す可動体１２とである。
固定板１０には複数の半リング１４が、その長手方向の一方側に一定間隔で平行に起立されている。各半リング１４の自由端部面１６には、可動体１２の軸部１８に同間隔で平行に起立された各半リング２０と合致した時に、これらの半リング２０のやはり自由端部面２２に形成した小凸部２４を受ける小穴２６が夫々形成されている。
【０００７】
固定板１０の、半リング１４を起立させた側部には、固定板１０の主平面２８に沿って開放横溝３０が形成される。そして主平面２８の、開放横溝３０と反対の側部の各端部位置には可動体１２の軸部１８の各端部３２、３４を夫々廻動自在に取り付けるための軸受３６、３８が突出する状態で形成される。
本発明のバインダー用具には更に、図１に示すような摺動板４０が含まれる。摺動板４０は、固定板１０の開放横溝３０に沿って摺動する狭幅の溝係合部分４２と、主平面２８上を往復摺動する幅広の平板部４４と、摺動板４０の摺動範囲を制限するための張り出し部４６とを含み、張り出し部４６の略中央位置には、以下に説明する可動体１２の凸部をカム駆動させるような、ここでは略Ｓ字形として示される平面屈曲形状を有する長溝４８が設けられる。
【０００８】
摺動板４０は、全体の長さｌ_１が固定板１０の全体長さｌ_２よりも長く、また張り出し部４６の長さｌ_３は、固定板１０の軸受３６、３８の内面間長さｌ_４よりも短く且つ長溝４８の端部間距離ｌ_５に相当する長さ分、或はそれ以上短くして形成される。こうすることにより摺動板４０は、少なくとも長溝４８の長さ分だけ主平面２８上で往復摺動することができるようになる。
一方、固定板１０の主平面２８の幅寸法ｌ_８と、軸受３６、３８の横断方向幅寸法ｌ_９とに関する、平板部４４の幅寸法ｌ_６と、張り出し部４６の幅寸法ｌ_７との幅寸法は、主平面２８上で摺動板４０が、軸受部３６、３８と開放横溝３０との一部分による軽い摩擦抵抗を受けつつ摺動するように選択し、バインダー用具１００を、例えば垂直に立てた場合でも摺動板４０が自重で下方に移動することがないようにしておく。
【０００９】
図２に部分的に示されるように、可動体１２の軸部１８の中央下部には、この長溝４８に係入する凸部５６が形成される。凸部５６は逆切頭円錐形状を有し、固定板１０に摺動板４０を載せ、可動体をその軸部１８を固定板１０の各端部３２、３４間に取り付けて固定板１０と組み合わせた時に、長溝４８に無理なく係入するような長さを有するような構成とする。
【００１０】
一方、図５に示すように、長溝４８の長手方向の各端部は、一方を張り出し部４６の側に接近させ、他方を張り出し部４６から離して位置付ける。これにより長溝４８は略Ｓ字形に屈曲した平面形状のものとなる。張り出し部４６側に接近する側の長溝４８の端部は、凸部５６を、可動体１２の半リング２０を固定板１０の半リング１４と合致させた状態のままで錠止するための錠止部５０を構成し、他方の端部は、半リング１４、２０を開放させる開放部５２を構成し、その間の部分は錠止部５０と開放部５２とを繋ぐ移行部５４を構成する。錠止部５０と開放部５２との横断方向の中心間距離ｌ_１０は、凸部５６の廻動が半リング２０の上述したような動作をもたらすような長さに決定する。
【００１１】
長溝４８は本実施例では摺動板４０を貫いて形成され、張り出し部４６側の溝壁５８には、錠止部５０から移行部５４を経て開放部５２に進むに従い、長溝に沿って段階的に緩くなる勾配が配設される。溝壁５８のこの勾配は、凸部５６が長溝４８の錠止部５０から開放部５２にかけて案内されそれにより可動体１２の軸部１８を中心として廻動する際に、溝壁５８の、凸部５６（図６に仮想線で示す）の周囲部分と接する面積が最大となるように選択される。これにより摺動板１０の往復摺動運動を、凸部５６を廻動させるための力として効率的に変換することができるようになる。
【００１２】
長溝４８の開放部５２の位置では溝壁５８の勾配が最も緩くなるが、これにより可動体１２の側の各半リング２０は固定板１０の側の各半リング１４に対して最大限に開放される。半リング２０をこの状態のままに維持するために、溝壁５８に対向する溝壁６０は、この溝壁６０が凸部５６に対するストッパとして作用し、凸部５６をそれ以上廻動させないような位置に位置決めされる。
本実施例のように摺動板４０を貫いて長溝４８を形成し、また凸部５６が長溝を貫く長さを有するものとする場合は、固定板１０の相当する位置に横断方向溝６２を形成し、凸部５６の廻動に支障を来さないようにすることもできる。
【００１３】
図７には本発明の前記実施例での摺動板４０の摺動状況と、摺動板１０の摺動に関連する可動体１２の軸部１８に設けた凸部５６のカム駆動状況が平面的に示されている。図７では摺動板４０は、可動体１２の軸部１８に起立させた半リング２０を固定板１０の側に設けた半リング１４と合致させた、つまりファイル或は紙片を綴じ込み或は保管するための位置において実線で示されている。
【００１４】
図７に実線で示す位置から摺動板４０を、その端部６４を介して矢印ａの方向に向けて点線の位置まで押し込むと、反対側の端部６６が押し込んだ長さ分だけ押し出され、長溝４８は点線で示す位置に移動する。この時、最初は長溝４８の錠止部５０にあった凸部５６は、長溝４８の屈曲形状に沿って案内されて矢印ｂのように横断方向に移動し、移行部５４を経て結局、開放部５２に入り込む。
凸部５６は、開放部５２に入ると、前述の如く溝壁５８の勾配が最も緩くなるのに伴いその下端部６８が図６に示すように持ち上がるが、その直後に、ストッパとして作用する溝壁６０に当接するためにそれ以上は廻動しない。凸部５６が矢印ｂの方向に移動することにより結局、軸部１８が矢印ｃのように廻動されるので、可動体１２側の半リング２０は固定板１０側の半リング１４に対して一定範囲に開放された状態となる。
【００１５】
長溝４８の錠止部５０及び開放部５２或はその一方に、凸部５６を弾発的に係入させるための構造部分を形成することにより開閉動作に節度感を与えることができる。そうした弾発係入のための構造部分は固定板１０の好適な位置に形成することもできる。
また、図８に示す別態様の摺動板１４０のように、その各端部（図８では一方側の端部１６６のみが示される）の一部分を、綴じ込み用紙等と干渉しない範囲で且つそれらの綴じ込み用紙よりも外側に延出するような突出部７０として形成することにより、バインダー用具１００自体の長さを越える用紙等も綴じ込むことができるようになる。
【００１６】
【発明の効果】
本発明のバインダー用具によれば、押し引き式等の把手を必要とせず、しかも小型の、ワンアクションで開閉することのできる開閉機構を有するバインダー用具が提供される。
また本発明のバインダー用具は構造が単純であり、従来の同等品よりも製造コストが安価である。
【図面の簡単な説明】
【図１】本発明のバインダー用具の固定板及び摺動板の分解斜視図である。
【図２】本発明のバインダー用具の可動体の斜視図である。
【図３】固定板側及び可動体側の各半リングを閉じた状態を示すバインダー用具の断面図である。
【図４】固定板側及び可動体側の各半リングを開いた状態を示すバインダー用具の断面図である。
【図５】摺動板の長溝の部分平面図である。
【図６】図６の長溝の線Ａ−Ａに沿った断面図である。
【図７】固定板側及び可動体側の各半リングを開いた状態での、バインダー用具の部分破除した平面断面図である。
【図８】本発明のバインダー用具の別態様における部分平面図である。
【符号の説明】
１０固定板
１２可動体
１４、２０半リング
１６、２２自由端部面
１８軸部
２４小凸部
２６小穴
２８主平面
３０開放横溝
３６、３８軸受
４０摺動板
４２溝係合部分
４４平板部
４６張り出し部
４８長溝
５０錠止部
５２開放部
５４移行部
５６凸部
５８、６０溝壁
６２横断方向溝
６４、６６端部
６８下端部
７０突出部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a binder tool of a type that matches each half ring on the fixed side and the movable side, and more particularly relates to a structure for opening and closing the half ring on the movable side by cam drive.
[0002]
[Prior art]
Conventionally, in a binder tool of a type that matches each half ring formed on each member on the fixed side and the movable side, after closing each half ring at the time of closing, for example, a locking structure provided at the end of any member When manipulating the part to fix each half ring in this mated state and opening the binder tool, it is necessary to perform at least two operations such as first opening the locking structure and then rotating the movable member. It has become.
In the case of a binder tool that opens and closes a half ring by a sliding member, an operating handle or finger hook is provided on the front side of the sliding member, and the half ring is opened by pulling this to close the half ring. The handle is pushed in. However, since the handle is structurally complicated, the mold is also complicated, and accordingly, the manufacturing cost is increased accordingly. Also such handle, in a small binder equipment must be projected forward in order not to contact the sheet binding unit, which is the failure of the binder equipment miniaturization.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a binder tool having an opening / closing mechanism which does not have a push-pull type handle as described above and can be opened / closed with one action.
[0004]
[Means for Solving the Problems]
According to the present invention, a fixing plate (10) in which a plurality of half rings (14) are erected in parallel to the longitudinal direction, and the fixing plate are rotatably attached to the fixing plate half ring (14). A plastic binder tool (100) comprising a plurality of half rings (20) forming a continuous ring in combination with a movable body (12) erected parallel to the longitudinal direction,
The movable body (12) has a convex portion (56) integrally provided at the lower portion of the movable body,
A projecting portion (56) of the movable body is formed as a sliding plate (40) that reciprocates and slides within a predetermined length range while being restrained by the stationary plate at a portion between the stationary plate (10) and the movable body (12). Is formed into a long groove (48), and the long groove (48) locks the convex portion (56) at a position where the half rings (14, 20) are aligned with each other. 50), an opening portion (52) for fixing each half ring (14, 20) in a position for opening, and a transition portion (54) between the locking portion (50) and the opening portion (52). Having a sliding plate with a long groove ,
The sliding plate (40) is slid back and forth, and the convex portion (56) of the movable body (12) is moved along the long groove (48) of the sliding plate. At the same time, the movable body is centered on the shaft portion (18). A binder tool is provided that opens and closes each of the half rings (14, 20) by rotating a predetermined range.
[0005]
In one embodiment, the long groove (48) of the sliding plate (40) has a slope that varies along the long groove, and the groove wall (56) engages with the peripheral side surface of the convex portion (56) of the movable body (12). And a planar shape bent in a substantially S shape so that the convex portion rotates around the shaft portion (18) of the movable body, and the sliding plate (40) is more than the fixed plate (10). In each limit position of reciprocating sliding, one of the end portions (64, 66) protrudes beyond the edge of the fixing plate, and the protruding end portion provides the next reciprocating motion. Constitutes the push-in end.
Furthermore, the long groove (48) has a locking portion (50) for locking the convex portion (56) at a position where the half rings (14, 20) are aligned with each other, and each half ring (14, 20). an open portion for fixing the position of opening (52), viewed including the transition portion and (54) between locking portion (50) and the opening (52), the convex portion (56) at the bottom center of the movable body Provided integrally with the movable body, the long groove (48) of the sliding plate (40) can be provided at the center position of the sliding plate .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to FIGS.
1 and 2 show three members constituting the binder tool according to the first embodiment of the present invention. Two of these three members are the fixed plate 10 shown in FIG. 1 and the movable body 12 shown in FIG.
A plurality of half rings 14 are erected on the fixed plate 10 in parallel at regular intervals on one side in the longitudinal direction. When the free end surface 16 of each half ring 14 is matched with each half ring 20 standing parallel to the shaft portion 18 of the movable body 12 at the same interval, the free end surface 22 of these half rings 20 is also obtained. Small holes 26 are formed to receive the small convex portions 24 formed in the above.
[0007]
An open lateral groove 30 is formed along the main plane 28 of the fixed plate 10 on the side of the fixed plate 10 where the half ring 14 is raised. Then, bearings 36 and 38 for rotatably mounting the end portions 32 and 34 of the shaft portion 18 of the movable body 12 project at the end positions on the side opposite to the open lateral groove 30 of the main plane 28. It is formed in the state to do.
The binder tool of the present invention further includes a sliding plate 40 as shown in FIG. The sliding plate 40 includes a narrow groove engaging portion 42 that slides along the open lateral groove 30 of the fixed plate 10, a wide flat plate portion 44 that reciprocates on the main plane 28, and the sliding plate 40. The projecting portion 46 for limiting the sliding range is included, and the projecting portion of the movable body 12 described below is cam-driven at a substantially central position of the projecting portion 46, and is shown as a substantially S-shape here. A long groove 48 having a planar bent shape is provided.
[0008]
Sliding plate 40 is longer than the total length _{l 1} is the overall length _{l 2} of the fixing plate 10, and the length _{l 3} of the overhang 46, the inner surface between the length of the bearing 36, 38 of the fixed plate 10 It is shorter than l ₄ and shorter by a length corresponding to the distance l ₅ between the ends of the long groove 48 or more. By doing so, the sliding plate 40 can reciprocate on the main plane 28 by at least the length of the long groove 48.
On the other hand, the width _{l 8} of the main plane 28 of the fixed plate 10, about a transverse width dimension _{l 9} Metropolitan bearings 36 and 38, the width _{l 6} of the flat plate portion 44, the width dimension _{l 7} of the projecting portion 46 The width dimension is selected so that the sliding plate 40 slides on the main plane 28 while receiving a light frictional resistance by a portion of the bearing portions 36, 38 and the open lateral groove 30, and the binder tool 100 is set vertically, for example. Even when standing, the sliding plate 40 is prevented from moving downward by its own weight.
[0009]
As partially shown in FIG. 2, a convex portion 56 that engages with the long groove 48 is formed at the lower center of the shaft portion 18 of the movable body 12. The convex portion 56 has a reverse truncated cone shape, the sliding plate 40 is placed on the fixed plate 10, and the shaft 18 is mounted between the end portions 32 and 34 of the fixed plate 10 by attaching the movable body to the fixed plate 10. When combined, it is configured to have such a length that it can be easily inserted into the long groove 48.
[0010]
On the other hand, as shown in FIG. 5, each end portion in the longitudinal direction of the long groove 48 is positioned close to the projecting portion 46 side and the other is separated from the projecting portion 46. As a result, the long groove 48 has a planar shape bent substantially in an S shape. The end of the long groove 48 on the side approaching the overhanging portion 46 side is a lock for locking the convex portion 56 with the half ring 20 of the movable body 12 aligned with the half ring 14 of the fixed plate 10. The stopper 50 is constituted, and the other end constitutes an opening 52 for opening the half rings 14, 20, and a portion therebetween constitutes a transition 54 connecting the locking 50 and the opening 52. The center distance l _{10 in} the transverse direction between the locking part 50 and the opening part 52 is determined to be such a length that the rotation of the convex part 56 brings about the movement of the half ring 20 as described above.
[0011]
In this embodiment, the long groove 48 is formed through the sliding plate 40, and the groove wall 58 on the overhanging portion 46 side is stepped along the long groove as it proceeds from the locking portion 50 through the transition portion 54 to the opening portion 52. A gentle slope is provided. This gradient of the groove wall 58 is such that the convex portion 56 is guided from the locking portion 50 to the opening portion 52 of the long groove 48 and thereby rotates around the shaft portion 18 of the movable body 12. The area in contact with the peripheral portion of the portion 56 (indicated by the phantom line in FIG. 6) is selected to be maximized. Thereby, the reciprocating sliding motion of the sliding plate 10 can be efficiently converted as a force for rotating the convex portion 56.
[0012]
At the position of the opening 52 of the long groove 48, the gradient of the groove wall 58 becomes the slowest, so that each half ring 20 on the movable body 12 side opens to the maximum with respect to each half ring 14 on the fixed plate 10 side. Is done. In order to maintain the half ring 20 in this state, the groove wall 60 facing the groove wall 58 is such that the groove wall 60 acts as a stopper for the convex portion 56 and does not further rotate the convex portion 56. Positioned.
In the case where the long groove 48 is formed through the sliding plate 40 as in the present embodiment and the convex portion 56 has a length that penetrates the long groove, the transverse groove 62 is formed at a corresponding position of the fixed plate 10. It can also be formed so that the rotation of the convex portion 56 is not hindered.
[0013]
FIG. 7 shows the sliding state of the sliding plate 40 in the embodiment of the present invention and the cam driving state of the convex portion 56 provided on the shaft portion 18 of the movable body 12 related to the sliding of the sliding plate 10. It is shown in a plane. In FIG. 7, the sliding plate 40 has the half ring 20 raised on the shaft portion 18 of the movable body 12 aligned with the half ring 14 provided on the fixed plate 10 side, that is, a file or a piece of paper is bound or stored. It is shown by the solid line in the position to do.
[0014]
When the sliding plate 40 is pushed from the position shown by the solid line in FIG. 7 to the position of the dotted line in the direction of the arrow a through the end 64, the opposite end 66 is pushed out by the pushed length. The long groove 48 moves to a position indicated by a dotted line. At this time, the convex portion 56 which was initially in the locking portion 50 of the long groove 48 is guided along the bent shape of the long groove 48 and moves in the transverse direction as indicated by the arrow b, and finally opens through the transition portion 54. Part 52 is entered.
When the convex portion 56 enters the open portion 52, the lower end 68 thereof is lifted as shown in FIG. 6 as the gradient of the groove wall 58 becomes the most gentle as described above. Since it abuts against the wall 60, it does not rotate further. When the convex portion 56 moves in the direction of the arrow b, the shaft portion 18 is eventually rotated as indicated by the arrow c, so that the half ring 20 on the movable body 12 side is in relation to the half ring 14 on the fixed plate 10 side. It will be in the state opened to a certain range.
[0015]
By forming a structure portion for elastically engaging the convex portion 56 in the locking portion 50 and / or the opening portion 52 of the long groove 48, a moderation feeling can be given to the opening / closing operation. Such a structural portion for engaging and disengaging bullets can be formed at a suitable position of the fixing plate 10.
Further, like the sliding plate 140 of another mode shown in FIG. 8, a part of each end portion (only one end portion 166 is shown in FIG. 8) is in a range not interfering with the binding paper and the like. By forming the protruding portion 70 so as to extend outward from the binding paper, it is possible to bind paper or the like exceeding the length of the binder tool 100 itself.
[0016]
【The invention's effect】
According to the binder tool of the present invention, there is provided a binder tool that does not require a pull-and-pull handle or the like and has a small opening / closing mechanism that can be opened and closed with one action.
In addition, the binder tool of the present invention has a simple structure and is less expensive to manufacture than the conventional equivalent.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a fixing plate and a sliding plate of a binder tool according to the present invention.
FIG. 2 is a perspective view of a movable body of the binder tool of the present invention.
FIG. 3 is a cross-sectional view of the binder tool showing a state where the half rings on the fixed plate side and the movable body side are closed.
FIG. 4 is a cross-sectional view of the binder tool showing a state in which each half ring on the fixed plate side and the movable body side is opened.
FIG. 5 is a partial plan view of a long groove of a sliding plate.
6 is a cross-sectional view taken along line AA of the long groove of FIG.
FIG. 7 is a cross-sectional plan view of the binder tool partially broken in a state where the half rings on the fixed plate side and the movable body side are opened.
FIG. 8 is a partial plan view of another embodiment of the binder tool of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Fixed plate 12 Movable body 14, 20 Half ring 16, 22 Free end surface 18 Shaft part 24 Small convex part 26 Small hole 28 Main plane 30 Open lateral groove 36, 38 Bearing 40 Sliding plate 42 Groove engaging part 44 Flat plate part 46 Overhanging portion 48 Long groove 50 Locking portion 52 Opening portion 54 Transition portion 56 Protruding portion 58, 60 Groove wall 62 Transverse groove 64, 66 End portion 68 Lower end portion 70 Protruding portion

Claims

A fixing plate (10) in which a plurality of half rings (14) are erected parallel to the longitudinal direction, and a fixed ring (10) that is rotatably attached to the fixing plate and matches the half ring (14) of the fixing plate. A plastic binder tool (100) formed by combining a plurality of half rings (20) forming a movable body (12) erected parallel to the longitudinal direction,
The movable body (12) has a convex portion (56) integrally provided at the lower portion of the movable body,
A projecting portion (56) of the movable body is formed as a sliding plate (40) that reciprocates and slides within a predetermined length range while being restrained by the stationary plate at a portion between the stationary plate (10) and the movable body (12). Is formed into a long groove (48), and the long groove (48) locks the convex portion (56) at a position where the half rings (14, 20) are aligned with each other. 50), an opening portion (52) for fixing each half ring (14, 20) in a position for opening, and a transition portion (54) between the locking portion (50) and the opening portion (52). Having a sliding plate with a long groove ,
The sliding plate (40) is slid back and forth, and the convex portion (56) of the movable body (12) is moved along the long groove (48) of the sliding plate. At the same time, the movable body is centered on the shaft portion (18). A binder tool that opens and closes the half rings (14, 20) by rotating a predetermined range.

The long groove (48) of the sliding plate (40) has a gradient that changes along the long groove, and the groove wall (58) that engages the peripheral side surface of the convex portion (56) of the movable body (12), The binder tool according to claim 1, wherein the binder tool has a planar shape bent so as to rotate around the shaft portion (18) of the movable body.

The sliding plate (40) has a flat plate portion (44) longer than the fixed plate (10), and at each limit position of the reciprocating sliding, one of the end portions (64, 66) is a longitudinal edge of the fixed plate. The binder tool according to any one of claims 1 and 2, which protrudes beyond a portion, and the protruding portion constitutes a pushing end portion for giving a next reciprocating motion.

The convex portion (56) of the movable body (12) is provided integrally with the movable body at the lower center of the movable body,
The binder tool according to any one of claims 1 to 3, wherein the long groove (48) of the sliding plate (40) is provided at a central position of the sliding plate .