JP2007268676A - Clamping fixture - Google Patents

Clamping fixture Download PDF

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Publication number
JP2007268676A
JP2007268676A JP2006099615A JP2006099615A JP2007268676A JP 2007268676 A JP2007268676 A JP 2007268676A JP 2006099615 A JP2006099615 A JP 2006099615A JP 2006099615 A JP2006099615 A JP 2006099615A JP 2007268676 A JP2007268676 A JP 2007268676A
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clamping
movable
screw shaft
support
fixed
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Yasushi Jo
裕史 徐
Futoshi Ishizuka
太 石塚
Hiroyuki Watanabe
寛之 渡邉
Eiichiro Nakano
栄一郎 中野
Yoshiaki Ikegami
誉秋 池上
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Priority to JP2006099615A priority Critical patent/JP2007268676A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a clamping fixture capable of fastening a laminate body with a highly fastening force without a size being enlarged and damaged. <P>SOLUTION: The clamping fixture is equipped with a fixed clamping part 2 having a clamping piece 21, a movable sandwiching part 3 which has the clamping piece and is movable in the clamping direction, a clearance adjustment mechanism 4 for adjusting the clearance of these clamping pieces, and a fastening mechanism 5 for giving a pressing force for the laminate body to a movable side clamping piece 31. The clearance adjustment mechanism 4 is equipped with a screw shaft 6 for supporting, a first support part 7 which is screwed with a screw shaft 6 for supporting and fixed to a fixed clamping part 2, and a second support part 8 where the screw shaft 6 for supporting is rotatably fitted and which supports the movable clamping part 3. The fastening mechanism 5 is equipped with a movable support shaft 51 for movably supporting the movable clamping part 3 relative to the second support part 8, a third support part 52 which is fixed to the opposite side to a laminate body clamping position relative to a movable fulcrum of the fixed clamping part 2, and a screw shaft 53 for fastening which is screwed with the third support part 52, and press contactably to the opposite side to the laminate body clamping position relative to the movable fulcrum of the movable clamping part 3. The clearance adjustment mechanism 4 and the fastening mechanism 5 are disposed between the opposed clamping pieces. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、積層体を所定の締付力で締め付けて挟持するクランプ治具に関する。本発明のクランプ治具は、特に、板状のものを積層した積層体を一時的に挟持して位置ずれが起こるのを防止するために用いるクランプ治具に関する。   The present invention relates to a clamp jig that clamps and holds a laminated body with a predetermined tightening force. The clamp jig of the present invention particularly relates to a clamp jig used for temporarily sandwiching a laminated body in which plate-shaped ones are laminated to prevent positional displacement.

板状のものが多数積層された積層体としては、例えばレドックスフロー電池のセルスタックが挙げられる。セルスタックは、例えば１０個から３０個の板状セルを積層し、その積層方向両端に給排板を配置して形成されるサブスタックにより構成される。セルスタックは、単数のサブスタックで構成したり、サブスタックを複数積層して構成したりする。   As a laminated body in which a large number of plate-like materials are laminated, for example, a cell stack of a redox flow battery can be mentioned. The cell stack is composed of, for example, a sub-stack formed by stacking 10 to 30 plate cells and arranging supply / discharge plates at both ends in the stacking direction. The cell stack is composed of a single sub stack or a plurality of sub stacks.

ところで、複数のサブスタックを積層してセルスタックを構成する場合、サブスタックは、これらサブスタックを積層するまでの間、多数の板状セルと給排板に位置ずれが起こらないようにするために、通常は治具を用いて固定しておく。   By the way, when a cell stack is configured by stacking a plurality of sub-stacks, the sub-stack is configured to prevent misalignment between a large number of plate-like cells and supply / discharge plates until these sub-stacks are stacked. Usually, it is fixed using a jig.

サブスタックを固定する治具としては、例えば特許文献１に示すようなＣ型クランプ治具が挙げられる。このＣ型クランプ治具を多数用いて、複数枚の板状セルと給排板を外周縁部において挟持して位置ずれしないように固定している。   As a jig for fixing the sub stack, for example, a C-type clamping jig as shown in Patent Document 1 can be cited. A large number of the C-shaped clamp jigs are used to fix a plurality of plate-like cells and supply / discharge plates so as not to be displaced by being sandwiched at the outer peripheral edge.

Ｃ型クランプ治具は、先端部に受け部を有する螺子軸と、Ｃ字状の保持枠とを備え、この保持枠の一端部にも受け部を設け、他端部に、螺子軸が保持枠の受け部に対して進退可能に螺合される螺子孔を設けたものである。   The C-type clamp jig includes a screw shaft having a receiving portion at the tip and a C-shaped holding frame. The receiving frame is also provided at one end of the holding frame, and the screw shaft is held at the other end. A screw hole is provided to be screwed into the receiving portion of the frame so as to be able to advance and retreat.

そして、このＣ型クランプ治具でサブスタックを固定する際は、まず、クランプ治具の各受け部の間の間隔がサブスタックの積層高さよりも大きくなるように螺子軸を回転させた後、保持枠をサブスタックの外周部に嵌める。そして、螺子軸を両受け部がサブスタックに接触するまで回転させ、さらに、所定の締付力が得られるまで締め付けて、両受け部でサブスタックを挟持する。   And when fixing the sub stack with this C-type clamp jig, first, after rotating the screw shaft so that the interval between the receiving portions of the clamp jig is larger than the stack height of the sub stack, Fit the holding frame on the outer periphery of the sub-stack. Then, the screw shaft is rotated until both receiving portions come into contact with the sub-stack, and further tightened until a predetermined tightening force is obtained, whereby the sub-stack is sandwiched between both receiving portions.

特開平11-188648号公報Japanese Patent Laid-Open No. 11-188648

ところで、クランプ治具を用いて板状セル等の位置ずれが起こらないようにするためには、所定の締付力で板状セルと給排板とを締め付けておく必要がある。例えば５０００ｃｍ２セルの場合、５０００ｋｇ程度の締付力で多数の板状セルと給排板を締め付けておく必要がある。 By the way, in order to prevent the displacement of the plate-like cell or the like using the clamp jig, it is necessary to fasten the plate-like cell and the supply / discharge plate with a predetermined tightening force. For example, in the case of a 5000 cm 2 cell, it is necessary to fasten a large number of plate cells and supply / discharge plates with a tightening force of about 5000 kg.

上記したＣ型クランプ治具では、螺子軸の先端部を積層体の表面に向けて押し込むようにして、直接螺子軸で積層体を締め付けている。そして、高い締付力を維持するためには、例えば螺子軸と螺子孔に形成する螺子ピッチを小さくして螺子が弛まないようにする必要がある。   In the C-type clamping jig described above, the laminated body is directly clamped by the screw shaft so that the tip of the screw shaft is pushed toward the surface of the laminated body. In order to maintain a high tightening force, for example, it is necessary to reduce the screw pitch formed in the screw shaft and the screw hole so that the screw does not loosen.

しかも、Ｃ型クランプ治具では、保持枠の端部に形成する螺子孔に螺子軸を螺合させるため、保持枠の枠の太さに応じて螺子孔の大きさが決まる。従って、螺子孔はあまり大きくできないので、螺子軸も太くできない。しかし、所定の高締付力を得るためには、その締付力が維持できる太さを要するので、螺子軸や保持枠が細いと締付時に螺子軸が破損してしまう虞がある。その結果、所定の高締付力を得るためには、保持枠と螺子軸を太くしなければならず、クランプ治具が大きくなってしまう。   In addition, in the C-type clamping jig, the screw shaft is screwed into the screw hole formed at the end of the holding frame, so the size of the screw hole is determined according to the thickness of the frame of the holding frame. Accordingly, since the screw hole cannot be made too large, the screw shaft cannot be made thick. However, in order to obtain a predetermined high tightening force, a thickness that can maintain the tightening force is required. Therefore, if the screw shaft or the holding frame is thin, the screw shaft may be damaged during tightening. As a result, in order to obtain a predetermined high tightening force, the holding frame and the screw shaft must be thickened, and the clamp jig becomes large.

また、複数のサブスタックを積層する際は、二枚のエンドプレートで挟持するように一方のエンドプレートの上にサブスタックを積層していく。このとき、サブスタックに取り付けられているＣ型クランプ治具は、螺子軸が、サブスタックの給排板から積層方向に大きく突出した状態になっている。   Further, when stacking a plurality of sub-stacks, the sub-stacks are stacked on one end plate so as to be sandwiched between two end plates. At this time, in the C-type clamp jig attached to the sub stack, the screw shaft protrudes greatly in the stacking direction from the supply / discharge plate of the sub stack.

特に、所定の高締付力を得るために、保持枠と螺子軸を太くすると、クランプ治具でサブスタックを挟持したときに、このサブスタックの端面から保持枠と螺子軸が大きく突出してしまう。   In particular, if the holding frame and the screw shaft are made thick in order to obtain a predetermined high tightening force, the holding frame and the screw shaft will protrude greatly from the end surface of the sub stack when the sub stack is clamped by a clamping jig. .

従って、例えば、給排板にクランプ治具の受け部を受け入れる凹部を形成したとしても、螺子軸や保持枠の一部は依然として給排板から積層方向に大きく突出した状態になる。その結果、サブスタックを積層しようとすると螺子軸が干渉して積み重ねられないので、取り付けていたクランプ治具を外してサブスタックを積層しなければならくなる。このようにクランプ治具を取り外してサブスタックを積層していくと、積層している途中で板状セルや給排板の位置ずれが生ずる虞がある。   Therefore, for example, even if the recess for receiving the receiving portion of the clamp jig is formed on the supply / discharge plate, the screw shaft and a part of the holding frame still protrude greatly from the supply / discharge plate in the stacking direction. As a result, when trying to stack the sub-stacks, the screw shafts interfere and cannot be stacked, so the attached clamp jig must be removed to stack the sub-stacks. When the clamp jig is removed and the sub stacks are stacked in this way, there is a possibility that the position of the plate-like cell or the supply / discharge plate may be shifted during the stacking.

また、螺子軸の螺子ピッチを小さくすると、螺子軸の一回転あたりの軸方向への移動量が少なく、クランプ治具の取り付け、取り外しを行う際に螺子軸を回転させる回数が多くなり、取り付け、取り外し作業に長い時間が掛かってしまう。   Also, if the screw pitch of the screw shaft is reduced, the amount of movement in the axial direction per rotation of the screw shaft is small, and the number of times the screw shaft is rotated when attaching and removing the clamp jig is increased. The removal work takes a long time.

以上のことから、本発明は、大型化することなく、しかも、破損することなく積層体を高締付力で締め付けられるクランプ治具を提供することを主目的とする。さらに、他の目的として、積層体をクランプ治具で挟持したときに、積層体の積層方向端面から突出する部分をできるだけ少なくできるクランプ治具を提供する。   In view of the above, the main object of the present invention is to provide a clamp jig that can clamp a laminated body with a high tightening force without increasing the size and without damaging it. Furthermore, as another object, there is provided a clamping jig capable of minimizing a portion protruding from an end surface in the stacking direction of the laminated body when the laminated body is held by the clamping jig.

本発明のクランプ治具は、積層体を所定の圧力で積層方向に押圧して挟持するクランプ治具であって、固定挟持部と、可動挟持部と、これら挟持片の間隔を調整する間隔調整機構と、可動挟持部の挟持片に積層体への押圧力を付与する締付機構とを備えることを特徴とする。   The clamp jig of the present invention is a clamp jig that presses and holds a laminated body in a stacking direction with a predetermined pressure, and adjusts the interval between the fixed clamping part, the movable clamping part, and the gap between these clamping pieces. And a clamping mechanism that applies a pressing force to the stacked body to the clamping piece of the movable clamping unit.

固定挟持部は、積層体を挟持するための板状の挟持片を有する。可動挟持部も板状の挟持片を有し、挟持方向に動くようにしている。そして、各挟持部における挟持片の一端には、積層体に係合する係合爪を対向するように形成し、これら挟持片の係合爪で積層体を挟持することが好ましい。   The fixed clamping part has a plate-shaped clamping piece for clamping the laminated body. The movable clamping part also has a plate-shaped clamping piece so as to move in the clamping direction. And it is preferable to form at one end of the clamping piece in each clamping part so that the engaging claw which engages with a laminated body may be opposed, and to clamp a laminated body with the engaging claw of these clamping pieces.

間隔調整機構は、支持用螺子軸と、第一支持部と、第二支持部とを備える。第一支持部は、支持用螺子軸の一端側と螺合する雌螺子部を有し、固定挟持部に固定される。第二支持部は、支持用螺子軸の他端側が回転可能に嵌め合わされ、可動挟持部を支持する。   The interval adjusting mechanism includes a support screw shaft, a first support portion, and a second support portion. The first support portion has a female screw portion screwed with one end side of the support screw shaft, and is fixed to the fixed holding portion. The second support portion is rotatably fitted to the other end side of the support screw shaft, and supports the movable holding portion.

第二支持部は、支持用螺子軸の他端側に形成される雄螺子部と螺合する雌螺子部を有する構成とすることができる。また、第二支持部は、支持用螺子軸の他端側を、軸方向への移動を阻止し、フリー回転可能に支持する構成としてもよい。支持用螺子軸をフリー回転可能に支持する構成としては、例えば支持用螺子軸の先端部にフランジ部を形成し、第二支持部には、支持用螺子軸の先端部分を軸方向と直交する方向から挿入可能で、フランジ部が軸方向に移動しない形状の穴を有する構成が挙げられる。   A 2nd support part can be set as the structure which has a female screw part screwed together with the male screw part formed in the other end side of the screw shaft for support. Further, the second support portion may be configured to support the other end side of the supporting screw shaft so as to prevent movement in the axial direction and to allow free rotation. As a configuration for supporting the support screw shaft so as to be freely rotatable, for example, a flange portion is formed at the tip portion of the support screw shaft, and the tip portion of the support screw shaft is orthogonal to the axial direction at the second support portion. The structure which has the hole of the shape which can be inserted from a direction and a flange part does not move to an axial direction is mentioned.

第二支持部に雌螺子部を形成する場合は、支持用螺子軸には、螺子山の方向が互いに反対方向となる２つの雄螺子部を形成する。第二支持部は、支持用螺子軸の前記他端側に形成する雄螺子部と螺合させる。このように支持用螺子軸に２つの逆方向の雄螺子部を形成することにより、ターンバックルを構成とすることができる。間隔調整機構をターンバックルの構成とすることにより、支持用螺子軸の１回の回転による挟持片の変化量を、従来のＣ型クランプの場合の２倍にすることができる。その結果、挟持片の間隔調整が短時間で行えるようになる。   In the case where the female screw portion is formed in the second support portion, two male screw portions whose screw thread directions are opposite to each other are formed on the support screw shaft. The second support part is screwed with a male screw part formed on the other end side of the support screw shaft. In this manner, the turnbuckle can be configured by forming two male screw portions in opposite directions on the supporting screw shaft. By adopting a turnbuckle configuration for the interval adjusting mechanism, the amount of change of the clamping piece due to one rotation of the supporting screw shaft can be doubled in the case of the conventional C-type clamp. As a result, it is possible to adjust the interval between the holding pieces in a short time.

支持用螺子軸を第一支持部および第二支持部に対して回転させることにより、第一支持部の固定挟持部側端部から第二支持部の可動挟持部側端部までの長さを変動させて各挟持片の間隔を調整する。なお、挟持片の係合爪の積層体への当接位置は、積層体を十分挟持できる位置にしなければならない。そのためには、所定の挟持位置が得られるように挟持片の積層体を覆う面積を確保する必要がある。従って、支持用螺子軸と各支持部とは、各挟持片に対して、積層体を覆う所定の面積を確保できる位置に取り付ける。   By rotating the supporting screw shaft with respect to the first support part and the second support part, the length from the fixed holding part side end of the first support part to the movable holding part side end of the second support part is increased. Adjust the interval between the sandwiching pieces by changing. In addition, the contact position of the engaging claw of the sandwiching piece with the laminated body must be a position where the laminated body can be sufficiently sandwiched. For this purpose, it is necessary to secure an area covering the stack of sandwiching pieces so that a predetermined sandwiching position can be obtained. Therefore, the supporting screw shaft and the supporting portions are attached to the holding pieces at positions where a predetermined area covering the laminated body can be secured.

締付機構は、第二支持部に対して可動挟持部を挟持方向に可動に支持する可動支持軸と、雌螺子部を有し、固定挟持部における可動支点に対して積層体の挟持位置とは反対側に固定される第三支持部と、第三支持部と螺合し、可動挟持部における可動支点に対して積層体の挟持位置とは反対側に圧接可能な締付用螺子軸とを備える。   The tightening mechanism has a movable support shaft that movably supports the movable holding portion in the holding direction with respect to the second support portion, a female screw portion, and a holding position of the laminate with respect to the movable fulcrum in the fixed holding portion. Is a third support portion fixed to the opposite side, a screw shaft that is screwed with the third support portion, and that can be pressed against the movable fulcrum in the movable holding portion on the side opposite to the holding position of the laminate. Is provided.

この支持軸は、例えば、可動挟持部の挟持片における第二支持部配設側に軸受部を形成し、第二支持部における可動挟持部配設側端部に軸穴を形成して、可動挟持部の軸受部と第二支持部の軸孔に貫通させるようにする。   For example, the support shaft is movable by forming a bearing portion on the second support portion arrangement side of the holding piece of the movable holding portion and forming a shaft hole on the movable holding portion arrangement side end portion of the second support portion. It is made to penetrate the shaft hole of the bearing part of the clamping part and the second support part.

第三支持部の固定挟持部への固定位置は、締付用螺子軸によって可動挟持部が挟持方向に押し上げられる位置に固定する。間隔調整機構の支持用螺子軸と締付用螺子軸とは平行して配置された状態になる。   The fixed position of the third support part to the fixed clamping part is fixed at a position where the movable clamping part is pushed up in the clamping direction by the screw shaft for fastening. The supporting screw shaft and the tightening screw shaft of the interval adjusting mechanism are arranged in parallel.

締付用螺子軸は、例えば軸方向全体に雄螺子部が形成されたものを用いることができる。締付用螺子軸で可動挟持部を押し上げる場合、挟持片における挟持位置とは反対側に締付用螺子軸の先端部を当接させて押し上げるようにすることができる。また、可動挟持部には、挟持片の平面よりも固定挟持部側に、締付用螺子軸の先端部を当接させるための平面部を別途形成するようにしてもよい。   As the tightening screw shaft, for example, a shaft in which a male screw portion is formed in the entire axial direction can be used. When the movable clamping part is pushed up by the clamping screw shaft, the tip part of the clamping screw shaft can be brought into contact with the clamping piece on the side opposite to the clamping position and pushed up. Further, the movable clamping part may be separately formed with a flat part for abutting the tip part of the fastening screw shaft closer to the fixed clamping part than the flat surface of the clamping piece.

締付用螺子軸は、可動挟持部側端面から所定位置に大径部を形成することが好ましい。大径部を形成する場合には、大径部の端面を可動挟持部に当接させて、可動挟持部を押し上げるようにする。大径部を形成することにより、可動挟持部への接触面積を大きくして、可動挟持部を押し上げた際の締付用螺子軸にかかる応力を分散させることができ、締付用螺子軸の破損を防ぐことができる。   The fastening screw shaft preferably has a large diameter portion at a predetermined position from the end surface on the movable clamping portion side. When forming the large-diameter portion, the end surface of the large-diameter portion is brought into contact with the movable holding portion to push up the movable holding portion. By forming the large diameter portion, the contact area to the movable clamping portion can be increased, and the stress applied to the clamping screw shaft when the movable clamping portion is pushed up can be dispersed. Damage can be prevented.

大径部は、例えば、雄螺子部にナットを螺合し、このナットを可動挟持部側端面から所定位置において溶接により固定することにより得られる。このときの所定位置とは、可動挟持部側端面から例えば２〜３ｃｍの位置でもよいし、大径部の端面と軸の端面とが一致する位置としてもよい。また、大径部は、締付用螺子軸を形成する際に、一体成形により形成するようにしてもよい。   The large-diameter portion is obtained, for example, by screwing a nut into a male screw portion and fixing the nut by welding at a predetermined position from the end surface on the movable clamping portion side. The predetermined position at this time may be, for example, a position of 2 to 3 cm from the end face on the movable clamping part side, or may be a position where the end face of the large diameter part and the end face of the shaft coincide. Further, the large diameter portion may be formed by integral molding when the fastening screw shaft is formed.

大径部を締付用螺子軸の先端に形成して、この大径部の端面を可動挟持部に当接させる場合は、この端面全体で可動挟持部を押し上げる。また、大径部を締付用螺子軸の先端よりも中央側の所定の位置に形成する場合には、可動挟持部における可動支点に対して積層体の挟持位置とは反対側に、挟持片の平面よりも固定挟持部側となる平面部を別途形成する。そして、この平面部にさらに締付用螺子軸の上端部が挿入可能で、大径部の外径よりも小さい挿通孔を形成し、この平面部における挿通孔の周縁部に大径部の端面を当接させるようにする。   When the large-diameter portion is formed at the tip of the fastening screw shaft and the end surface of the large-diameter portion is brought into contact with the movable holding portion, the movable holding portion is pushed up over the entire end surface. Further, when the large-diameter portion is formed at a predetermined position on the center side of the tip of the fastening screw shaft, the clamping piece is disposed on the side opposite to the sandwiching position of the laminate with respect to the movable fulcrum in the movable sandwiching portion. A flat portion that is closer to the fixed clamping portion than the flat surface is separately formed. Further, an upper end portion of the screw shaft for fastening can be further inserted into the flat portion, an insertion hole smaller than the outer diameter of the large diameter portion is formed, and an end surface of the large diameter portion is formed at the peripheral portion of the insertion hole in the flat portion. To make contact.

締付機構では、締付用螺子軸を第三支持部から進出する方向に回転させることにより、締付用螺子軸の一部が可動挟持部に当接し、この可動挟持部における可動支点に対して積層体の挟持位置とは反対側が押し上げられていく。その結果、可動挟持部の挟持片における積層体を挟持する先端部が、積層体を押し付ける方向に移動し、この挟持片に積層体への押圧力が付与される。   In the tightening mechanism, by rotating the tightening screw shaft in the advancing direction from the third support portion, a part of the tightening screw shaft comes into contact with the movable holding portion, and with respect to the movable fulcrum in the movable holding portion. The side opposite to the sandwiching position of the laminate is pushed up. As a result, the tip of the sandwiching piece of the movable sandwiching part that sandwiches the stacked body moves in the direction in which the stacked body is pressed, and a pressing force to the stacked body is applied to the sandwiching piece.

以上のように締付機構は、可動挟持部における可動支点に対して積層体を挟持する側とは反対側を挟持方向に動かして、挟持片を、可動支点を支点としたテコの原理により、積層体を押圧状態で挟持する位置と、挟持を解除する位置とに変更する構成となる。   As described above, the tightening mechanism moves the side opposite to the side that sandwiches the stacked body with respect to the movable fulcrum in the movable clamping unit in the clamping direction, and the lever piece is based on the lever principle using the movable fulcrum as a fulcrum. It becomes the structure changed into the position which clamps a laminated body in a press state, and the position which cancels | releases clamping.

また、本発明では、このように各挟持部と間隔調整機構と締付機構とを構成することにより、二つの挟持部の挟持片の間に、間隔調整機構及び締付機構が配置される。   Moreover, in this invention, a space | interval adjustment mechanism and a clamping mechanism are arrange | positioned between the clamping pieces of two clamping parts by comprising each clamping part, a space | interval adjustment mechanism, and a clamping mechanism in this way.

さらに本発明では、支持用螺子軸の回転により、第二支持部が供回りするのを防止する防止手段を備えるようにすることが好ましい。   Furthermore, in the present invention, it is preferable to provide a preventing means for preventing the second support portion from rotating due to the rotation of the supporting screw shaft.

回転防止手段は、例えば、第二支持部の側面に平面部を形成するとともに、この平面部に当接する平面を有する長尺部材を設けるようにする。そして、長尺部材の平面を第二支持部の平面部に当接させた状態で、固定用挟持部に固定する。第二支持部の側面に平面を形成し、長尺部材を固定用挟持部に固定することにより回転防止手段を構成できる。さらに、回転防止手段の長尺部材には間隔調整用の目盛りを設けるようにする。   For example, the rotation preventing means forms a flat portion on the side surface of the second support portion, and provides a long member having a flat surface in contact with the flat portion. And it fixes to the clamping part for fixation in the state which made the plane of the elongate member contact the plane part of the 2nd support part. An anti-rotation means can be constructed by forming a flat surface on the side surface of the second support portion and fixing the long member to the fixing clamping portion. Further, the long member of the rotation preventing means is provided with a scale for adjusting the interval.

回転防止手段を設けることにより、支持用螺子軸を回転させて挟持片の間隔を調整するときに、可動挟持部と第二支持部が供回りするのを防止できる。   By providing the rotation preventing means, it is possible to prevent the movable holding portion and the second support portion from rotating when the supporting screw shaft is rotated to adjust the interval between the holding pieces.

さらに、回転防止手段の長尺部材に目盛りを設けることにより、位置合わせを容易にし、かつ、支持用螺子軸が第一支持部及び第二支持部から抜け落ちるのを防止できるので、挟持片の挟持幅の調整を行う際の作業性を向上できる。   Further, by providing a scale on the long member of the rotation preventing means, positioning can be facilitated and the supporting screw shaft can be prevented from falling off from the first support portion and the second support portion. Workability when adjusting the width can be improved.

以上の構成を有する本発明のクランプ治具で積層体を挟持する場合、まず、間隔調整機構の支持用螺子軸を回転させて、固定挟持部の挟持片と可動挟持部の挟持片との間隔を積層体の積層高さよりも大きくなるように調整する。そして、各挟持片を積層体の縁に嵌め合わせ、支持用螺子軸を挟持片の間隔が狭くなる方向に回転させて、各挟持片を積層体の両端面に当接させる。   When sandwiching the laminate with the clamp jig of the present invention having the above configuration, first, the support screw shaft of the interval adjusting mechanism is rotated, and the interval between the clamping piece of the fixed clamping unit and the clamping piece of the movable clamping unit Is adjusted to be larger than the stack height of the stack. Then, each holding piece is fitted to the edge of the laminate, and the supporting screw shaft is rotated in a direction in which the interval between the holding pieces is narrowed, so that each holding piece comes into contact with both end faces of the laminate.

次に、締付機構の締付用螺子軸を可動挟持部を押し上げる方向に回転させて締付用螺子軸の端面または大径部の端面を可動挟持部に当接させる。さらに、締付用螺子軸を回転させて、可動挟持部の挟持片を所定の締付力が得られるまで積層体に圧接する方向に動かす。   Next, the tightening screw shaft of the tightening mechanism is rotated in the direction of pushing up the movable holding portion, and the end surface of the tightening screw shaft or the end surface of the large diameter portion is brought into contact with the movable holding portion. Further, the clamping screw shaft is rotated, and the clamping piece of the movable clamping unit is moved in the direction in which it is pressed against the laminated body until a predetermined clamping force is obtained.

可動挟持部の挟持片は、締付機構による押し上げ動作で、積層体を所定の押圧力で押し付けることになり、固定挟持部の挟持片と可動挟持部の挟持片により、積層体を所定の高締付力で締め付けることができる。   The sandwiching piece of the movable sandwiching part pushes the laminate with a predetermined pressing force by the push-up operation by the tightening mechanism, and the sandwiching piece of the fixed sandwiching part and the sandwiching piece of the movable sandwiching part are pushed to a predetermined height. It can be tightened with a tightening force.

以上のように、本発明の挟持部と間隔調整機構と締付機構とを備えるクランプ治具は、間隔調整機構により挟持片の間隔を調整した後、締付機構により、可動挟持部の挟持片に所定の押圧力を与えて、挟持片で積層体を所定の高締付力で締め付けた状態にできる。このとき、各挟持片は、間隔調整機構の支持用螺子軸と、締付機構の締付用螺子軸とで支持された状態で、締付力が与えられるので、これら２本の螺子軸で締付力を分散でき、強固な締付力が得られる。さらに、本発明に係る締付機構は、挟持片を、可動支点を支点としたテコの原理を利用して締付力を付与する構成としているので、締付用螺子軸による押圧力がさほど大きくなくとも、強固な締付力が得られ、締付用螺子軸の破損も起こりにくい。   As described above, the clamping jig including the clamping unit, the interval adjusting mechanism, and the clamping mechanism according to the present invention adjusts the interval between the clamping pieces by the interval adjusting mechanism, and then the clamping piece of the movable clamping unit by the clamping mechanism. A predetermined pressing force is applied to the laminated body, and the laminated body can be clamped with a predetermined high clamping force with the sandwiching pieces. At this time, each clamping piece is applied with a tightening force in a state where it is supported by the supporting screw shaft of the interval adjusting mechanism and the tightening screw shaft of the tightening mechanism. The tightening force can be distributed and a strong tightening force can be obtained. Furthermore, since the clamping mechanism according to the present invention is configured to apply a clamping force to the clamping piece using the lever principle with the movable fulcrum as a fulcrum, the pressing force by the clamping screw shaft is so large. Even if not, a strong tightening force can be obtained and the screw shaft for tightening is not easily damaged.

さらに、本発明のクランプ治具は、常に挟持幅の範囲内に間隔調整機構と締付機構とを配置させておくことができる。従って、本発明のクランプ治具は、挟持部の挟持片の厚みのみが積層体の端面から突出した状態にでき、クランプ治具の積層体の端面からの突出量を最低限にすることができる。   Further, the clamp jig of the present invention can always have the interval adjusting mechanism and the tightening mechanism arranged within the range of the clamping width. Accordingly, in the clamping jig of the present invention, only the thickness of the clamping piece of the clamping part can be protruded from the end face of the laminated body, and the protruding amount of the clamping jig from the end face of the laminated body can be minimized. .

また、従来のようなＣ型クランプ治具のように螺子ピッチを小さくする場合、１本の螺子軸で積層体を締め付ける構成となっているので、締付力が高くなると螺子山が損傷し易くなる。本発明のクランプ軸では、挟持片を２本の螺子軸で支持して締付力を分散し、しかも、テコの原理で挟持片に押圧力を付与しているので、各螺子軸の螺子山は壊れ難い。   Further, when the screw pitch is reduced as in the case of the conventional C-type clamp jig, the laminated body is fastened with a single screw shaft. Therefore, when the tightening force is increased, the screw thread is easily damaged. Become. In the clamp shaft of the present invention, the clamping pieces are supported by the two screw shafts to disperse the clamping force, and the pressing force is applied to the clamping pieces according to the lever principle. Is hard to break.

本発明のクランプ治具は、積層体の積層高さに合わせて、各挟持部の挟持片の間隔の調整を行う動作(粗調整)を間隔調整機構で行い、最終的な締付力の調整を締付機構で行う。このとき、各挟持片は、間隔調整機構の支持用螺子軸と、締付機構の締付用螺子軸とで支持された状態で、締付力が与えられるので、これら２本の螺子軸で締付力を分散でき、強固な締付力が得られる。しかも、締付用螺子軸により可動挟持部の挟持片を押し上げる構成とし、かつ、支持軸を支点としたテコの原理を利用しているので、締付螺子軸による押し上げ力があまり大きくなくても、積層体への十分な押し付け力が得られる。   The clamping jig of the present invention performs an operation (coarse adjustment) for adjusting the interval between the clamping pieces of each clamping unit in accordance with the stacking height of the laminated body (coarse adjustment) to adjust the final tightening force. With the tightening mechanism. At this time, each clamping piece is applied with a tightening force in a state where it is supported by the supporting screw shaft of the interval adjusting mechanism and the tightening screw shaft of the tightening mechanism. The tightening force can be distributed and a strong tightening force can be obtained. Moreover, since the clamping piece of the movable clamping portion is pushed up by the clamping screw shaft and the lever principle is used with the support shaft as a fulcrum, even if the pushing force by the clamping screw shaft is not so large A sufficient pressing force to the laminate can be obtained.

以上のことから、本発明では、高い締め付け力によってもクランプ治具が壊れ難くなり、大型化することなく所定の高締付力で積層体を締め付けて、積層体を構成する部材の位置ずれを防止できる。   From the above, in the present invention, the clamping jig is not easily broken even by a high tightening force, and the laminate is tightened with a predetermined high tightening force without increasing the size, thereby shifting the position of the members constituting the laminate. Can be prevented.

さらに、本発明のクランプ治具は、積層体を挟持片で挟持したときに、積層体の積層方向端面から突出する部分は、挟持片の厚みだけとすることができる。従って、積層体の積層方向端面に、この挟持片の厚み分の凹部を形成しておけば、積層体をクランプ治具で挟持したまま、複数の積層体を積み重ねていくことが可能となる。   Further, in the clamping jig of the present invention, when the laminate is sandwiched between the sandwiching pieces, the portion protruding from the end surface in the stacking direction of the laminate can be limited to the thickness of the sandwiching piece. Therefore, if a concave portion corresponding to the thickness of this sandwiching piece is formed on the end face in the stacking direction of the stack, it is possible to stack a plurality of stacks while holding the stack with the clamp jig.

以下、本発明クランプ治具の実施形態を図面に基づいて説明する。クランプ治具1は、図５に示すように、レドックスフロー電池を構成するサブスタック9(積層体)を所定の圧力で積層方向に押圧した状態で挟持するものである。   Hereinafter, an embodiment of a clamp jig of the present invention will be described based on the drawings. As shown in FIG. 5, the clamp jig 1 holds the sub-stack 9 (laminated body) constituting the redox flow battery while being pressed in the stacking direction with a predetermined pressure.

本発明のクランプ治具1を複数用いて、サブスタック9を固定しておくことにより、サブスタック9の板状セル91及び給排板92が位置ずれしないようにする。   By fixing the substack 9 using a plurality of the clamping jigs 1 of the present invention, the plate cells 91 and the supply / discharge plates 92 of the substack 9 are prevented from being displaced.

本発明のクランプ治具1について具体的に説明する。図１から図３に示すように、クランプ治具1は、サブスタック9を挟持するための板状の挟持片21,31を有する一対の固定挟持部2と可動挟持部3を備える。さらに、一対の挟持片21,31の間隔を調整する間隔調整機構4と、可動挟持部3の挟持片31にサブスタック9への押圧力を付与する締付機構5とを備える。   The clamp jig 1 of the present invention will be specifically described. As shown in FIG. 1 to FIG. 3, the clamp jig 1 includes a pair of fixed clamping portions 2 and movable clamping portions 3 having plate-like clamping pieces 21 and 31 for clamping the sub-stack 9. Furthermore, a distance adjusting mechanism 4 that adjusts the distance between the pair of holding pieces 21 and 31 and a tightening mechanism 5 that applies a pressing force to the sub stack 9 to the holding pieces 31 of the movable holding unit 3 are provided.

固定挟持部2は、長方形状の挟持片21を備え、この挟持片21の一方の面における長手方向一端部には、積層体となるサブスタック9と係合する係合爪22が形成されている。さらに、この挟持片21の長手方向他端側には、後記する第一支持部7と第三支持部52を保護する板状の保護部23が、係合爪22が形成されている側に突設するように形成されている。   The fixed clamping part 2 includes a rectangular clamping piece 21, and an engaging claw 22 that engages with the sub-stack 9 serving as a laminated body is formed at one end in the longitudinal direction on one surface of the clamping piece 21. Yes. Further, on the other end side in the longitudinal direction of the sandwiching piece 21, a plate-like protection portion 23 for protecting the first support portion 7 and the third support portion 52, which will be described later, is provided on the side where the engaging claws 22 are formed. It is formed to project.

可動挟持部3は、固定挟持部2の挟持片21と同じ幅で、面積の小さい長方形状の挟持片31を備える。そして、挟持片31の一方の面における長手方向一端部には、積層体となるサブスタック9と係合する係合爪32が形成されている。   The movable clamping unit 3 includes a rectangular clamping piece 31 having the same width as the clamping piece 21 of the fixed clamping unit 2 and a small area. An engaging claw 32 that engages with the sub-stack 9 serving as a laminate is formed at one end in the longitudinal direction on one surface of the sandwiching piece 31.

固定挟持部2の挟持片21と、可動挟持部3の挟持片31に係合爪22,32を形成することにより、係合爪の部分にのみ、サブスタック9への締付力がかかるので高締付力が得られる。   By forming the engaging claws 22 and 32 on the clamping piece 21 of the fixed clamping part 2 and the clamping piece 31 of the movable clamping part 3, the clamping force to the sub-stack 9 is applied only to the engaging claw part. High tightening force can be obtained.

可動挟持部3は、さらに、挟持片31の長手方向他端側に、後記する可動支持軸51を回転可能に支持する軸受孔を有する２つの板状の軸受部33が、所定間隔を空けて形成されている。これら軸受部33は、挟持片31の上下平面における係合爪32が形成されている側に設けるとともに、平面の長手方向における係合爪31が形成されている側とは反対側に向けて突出した状態になっている。   The movable clamping part 3 further includes two plate-like bearing parts 33 having bearing holes for rotatably supporting a movable support shaft 51 to be described later on the other end side in the longitudinal direction of the clamping piece 31 with a predetermined interval therebetween. Is formed. These bearing portions 33 are provided on the side where the engaging claws 32 are formed on the upper and lower planes of the sandwiching piece 31, and project toward the side opposite to the side where the engaging claws 31 are formed in the longitudinal direction of the plane. It is in the state.

また、可動挟持部3は、軸受部33における挟持片31から突出した部分を連結するように板状の連結部34が形成されている。この連結部34は、挟持片31よりも固定挟持部側に設けられている。連結部34には、後記する締付機構5の締付用螺子軸53の先端部が挿通される挿通孔35が形成されている。この挿通孔35の大きさは、締付用螺子軸53に形成する大径部53bの外径よりも小さく形成している。   Further, the movable clamping part 3 is formed with a plate-like connecting part 34 so as to connect a part of the bearing part 33 protruding from the clamping piece 31. The connecting portion 34 is provided closer to the fixed clamping portion than the clamping piece 31. The connecting portion 34 is formed with an insertion hole 35 through which a distal end portion of a fastening screw shaft 53 of the fastening mechanism 5 described later is inserted. The size of the insertion hole 35 is smaller than the outer diameter of the large diameter portion 53b formed in the tightening screw shaft 53.

間隔調整機構4は、螺子山の方向が互いに反対方向となる２つの第一雄螺子部61と第二雄螺子部62を有する支持用螺子軸6と、支持用螺子軸6の第一雄螺子部61と螺合する第一支持部7と、第二雄螺子部62と螺合する第二支持部8とを備える。   The spacing adjustment mechanism 4 includes a supporting screw shaft 6 having two first male screw portions 61 and a second male screw portion 62 whose screw thread directions are opposite to each other, and a first male screw of the supporting screw shaft 6. The first support portion 7 that is screwed with the portion 61 and the second support portion 8 that is screwed with the second male screw portion 62 are provided.

支持用螺子軸6は、図３に示すように、軸方向中央部において、六角対辺を有するナット部63が一体に形成され、このナット部63に対して、軸方向一方側に第一雄螺子部61が、軸方向他方側に第二雄螺子部62が形成されている。このようにナット部63を設けておくと、支持用螺子軸6の回転が行い易くなる。第一雄螺子部61と第二雄螺子部62の螺子山のピッチは、挟持片21の間隔の粗調整を早く行えるようにするため粗くしており、例えば、６ｍｍのピッチにしている。   As shown in FIG. 3, the supporting screw shaft 6 is integrally formed with a nut portion 63 having hexagonal opposite sides at the axial central portion, and the first male screw is disposed on one axial side of the nut portion 63. The part 61 is formed with a second male screw part 62 on the other axial side. Providing the nut portion 63 in this way facilitates the rotation of the supporting screw shaft 6. The pitch of the screw threads of the first male screw portion 61 and the second male screw portion 62 is roughened so that rough adjustment of the interval between the holding pieces 21 can be performed quickly, for example, a pitch of 6 mm.

間隔調整機構4の第一支持部7は、内周面に第一雄螺子部61と螺合する雌螺子部71が形成されている。第一支持部7は、図１に示すように、外形は四角柱に形成されており、雌螺子部71はこの四角柱に貫通して形成されている。そして、図１から図３に示すように、第一支持部7の軸方向一端は、固定挟持部2の挟持片21の長手方向一端側における係合爪22が形成されている側の面に固定されている。固定挟持部２の挟持片21で、雌螺子部71が対向する位置には、この雌螺子部71の螺子溝部分と同じ径または、少し大きい径を有する第一貫通孔24が形成されている。この第一貫通孔24には、支持用螺子軸6の下端部が挿入できるようになっている。   The first support portion 7 of the spacing adjustment mechanism 4 has a female screw portion 71 that is screwed into the first male screw portion 61 on the inner peripheral surface. As shown in FIG. 1, the outer shape of the first support portion 7 is formed as a quadrangular column, and the female screw portion 71 is formed so as to penetrate the quadrangular column. As shown in FIGS. 1 to 3, one end in the axial direction of the first support portion 7 is on the surface on the side where the engagement claw 22 is formed on one end in the longitudinal direction of the holding piece 21 of the fixed holding portion 2. It is fixed. A first through hole 24 having the same diameter as the screw groove portion of the female screw portion 71 or a slightly larger diameter is formed at a position where the female screw portion 71 is opposed to the holding piece 21 of the fixed holding portion 2. . The lower end portion of the supporting screw shaft 6 can be inserted into the first through hole 24.

間隔調整機構4の第二支持部8は、内周面に第二雄螺子部62と螺合する雌螺子部81が形成されている。第二支持部8は、図４に示すように、外形は四角柱状に形成されており、雌螺子部81は軸方向下端にのみ開口するように形成されている。そして、第二支持部8の雌螺子部81が開口されない側の端部には、図４に示すように、可動支持軸51が挿通される軸孔82が形成されている。   The second support portion 8 of the interval adjustment mechanism 4 has a female screw portion 81 that is screwed with the second male screw portion 62 on the inner peripheral surface. As shown in FIG. 4, the second support portion 8 is formed in a quadrangular prism shape, and the female screw portion 81 is formed so as to open only at the lower end in the axial direction. A shaft hole 82 through which the movable support shaft 51 is inserted is formed at the end of the second support portion 8 on the side where the female screw portion 81 is not opened, as shown in FIG.

そして、以上の支持用螺子軸6と第一支持部7と第二支持部8とによりターンバックルが構成される。   The support screw shaft 6, the first support portion 7, and the second support portion 8 constitute a turnbuckle.

締付機構5は、可動挟持部3の挟持片31における可動支点(可動支持軸51で支持する位置)に対してサブスタック9を挟持する係合爪22形成側とは反対側を挟持方向に動かして、サブスタック9を押圧状態で挟持する位置と、挟持を解除する位置とに挟持片31を動かす構成としている。   The clamping mechanism 5 is configured so that the side opposite to the engagement claw 22 formation side that clamps the sub stack 9 with respect to the movable fulcrum (position supported by the movable support shaft 51) of the clamping piece 31 of the movable clamping unit 3 is in the clamping direction. The holding piece 31 is moved to a position where the sub-stack 9 is held in a pressed state and a position where the holding is released.

具体的には、締付機構5は、第二支持部8に対して可動挟持部3を挟持方向に可動可能に支持する可動支持軸51と、雌螺子部52aを有し、固定挟持部2における可動支点に対してサブスタック9の挟持位置とは反対側に固定される第三支持部52と、第三支持部52の雌螺子部52aと螺合し、可動挟持部3における連結部34に圧接可能な締付用螺子軸53とを備える。   Specifically, the tightening mechanism 5 includes a movable support shaft 51 that supports the movable holding portion 3 so as to be movable in the holding direction with respect to the second support portion 8, and a female screw portion 52a. The third support portion 52 fixed to the opposite side of the holding position of the sub stack 9 with respect to the movable fulcrum in FIG. And a fastening screw shaft 53 that can be pressed against.

可動支持軸51は、可動挟持部3の軸受部33の軸受孔と、第二支持部8の軸孔82とに挿通されて、これらの孔に回転可能に支持される。   The movable support shaft 51 is inserted into the bearing hole of the bearing portion 33 of the movable holding portion 3 and the shaft hole 82 of the second support portion 8, and is rotatably supported by these holes.

第三支持部52は、内周面に締付用螺子軸53の雄螺子部53aと螺合する雌螺子部52aが形成されている。第三支持部52は、図１から図３に示すように、第一支持部7と同じ外形は四角柱に形成されており、雌螺子部52aはこの四角柱に貫通して形成されている。さらに、第三支持部52は、第一支持部7よりも長く形成されている。そして、第三支持部52の軸方向一端は、第一支持部7と同様に固定挟持部2の挟持片21の係合爪22が形成されている側の面に固定されている。   The third support portion 52 has an inner peripheral surface formed with a female screw portion 52a that is screwed with the male screw portion 53a of the screw shaft 53 for tightening. As shown in FIGS. 1 to 3, the third support portion 52 has the same outer shape as that of the first support portion 7 formed in a rectangular column, and the female screw portion 52 a is formed so as to penetrate the square column. . Further, the third support portion 52 is formed longer than the first support portion 7. Then, one end in the axial direction of the third support portion 52 is fixed to the surface on the side where the engaging claw 22 of the holding piece 21 of the fixed holding portion 2 is formed in the same manner as the first support portion 7.

固定挟持部２の挟持片21で、雌螺子部52aが対向する位置には、この雌螺子部52aの螺子溝部分と同じ径または、少し大きい径を有する第二貫通孔25が形成されている。この第二貫通孔25には、締付用螺子軸53の下端部が挿入できるようになっている。   A second through hole 25 having the same diameter as the screw groove portion of the female screw portion 52a or a slightly larger diameter is formed at a position where the female screw portion 52a faces the holding piece 21 of the fixed holding portion 2. . The lower end portion of the tightening screw shaft 53 can be inserted into the second through hole 25.

締付用螺子軸53は、軸方向全体に雄螺子部53aが形成されている。この雄螺子部53aも締付用螺子軸53の上端の高さ調整を早く行えるようにするため粗くしており、例えば、６ｍｍのピッチにしている。さらに、締付用螺子軸53には、可動挟持部側端面から所定位置（２〜３ｃｍ）に大径部53bが形成されている。大径部53bは、雄螺子部53aにナットを螺合し、このナットを可動挟持部側端面から所定位置に溶接により固定して構成される。大径部53bをナットにより構成することにより、締付用螺子軸53の回転が行い易くなる。   The tightening screw shaft 53 has a male screw portion 53a formed in the entire axial direction. The male screw portion 53a is also roughened so that the height adjustment of the upper end of the screw shaft 53 for tightening can be performed quickly, and has a pitch of 6 mm, for example. Further, the fastening screw shaft 53 is formed with a large diameter portion 53b at a predetermined position (2 to 3 cm) from the end surface on the movable clamping portion side. The large-diameter portion 53b is configured by screwing a nut into the male screw portion 53a and fixing the nut from a movable clamping portion side end surface to a predetermined position by welding. By configuring the large-diameter portion 53b with a nut, the screw shaft 53 for tightening can be easily rotated.

締付用螺子軸53は、その上端部を可動挟持部3に形成した連結部34の挿通孔35に挿通させ、大径部53bの上端面を可動挟持部3に形成した連結部34の下面に当接させるようになっている。締付機構5は、この大径部53bの上端面を可動挟持部3の連結部34に当接させて、可動挟持部3を押し上げるようにしている。   The fastening screw shaft 53 is inserted into the insertion hole 35 of the connecting portion 34 formed in the movable holding portion 3 at the upper end portion thereof, and the lower surface of the connecting portion 34 formed in the movable holding portion 3 at the upper end surface of the large diameter portion 53b. It is made to contact | abut. The clamping mechanism 5 pushes up the movable clamping unit 3 by bringing the upper end surface of the large-diameter portion 53b into contact with the connecting portion 34 of the movable clamping unit 3.

締付用螺子軸53に大径部53bを形成することにより、可動挟持部3への接触面積を大きくすることができる。その結果、可動挟持部3を押し上げた際の締付用螺子軸にかかる応力を分散させることができ、締付用螺子軸53の破損を防ぐことができる。   By forming the large diameter portion 53b on the screw shaft 53 for tightening, the contact area with the movable clamping portion 3 can be increased. As a result, the stress applied to the tightening screw shaft when the movable holding portion 3 is pushed up can be dispersed, and the tightening screw shaft 53 can be prevented from being damaged.

締付機構5は、締付用螺子軸53を第三支持部52から進出する方向に回転させることにより、大径部53bの上端面が可動挟持部3の連結部34の下面に当接して、この可動挟持部3の連結部34側を押し上げていくように構成されている。   The tightening mechanism 5 rotates the tightening screw shaft 53 in the direction of advancement from the third support portion 52 so that the upper end surface of the large diameter portion 53b abuts on the lower surface of the connecting portion 34 of the movable holding portion 3. The movable clamping unit 3 is configured to push up the connecting unit 34 side.

支持用螺子軸6の回転に伴って可動挟持部3が回転するのを阻止する回転防止手段11を固定挟持部2に取り付ける。この回転防止手段11は、図１から図３に示すように、横断面が四角形状の長尺部材から形成されており、一端が固定挟持部2における係合爪22が形成されている側とは反対側端面に固定されるとともに、その下部が第一支持部7の側面に固定されている。また、上部側となる他端側は、第二支持部8の側面に当接させる。この回転防止手段11は、第一支持部7と第三支持部52の間に配置させている。   An anti-rotation means 11 for preventing the movable holding part 3 from rotating as the supporting screw shaft 6 rotates is attached to the fixed holding part 2. As shown in FIGS. 1 to 3, the rotation preventing means 11 is formed of a long member having a square cross section, and one end is on the side where the engaging claws 22 are formed in the fixed clamping portion 2. Is fixed to the opposite end surface, and its lower part is fixed to the side surface of the first support portion 7. Further, the other end side which is the upper side is brought into contact with the side surface of the second support portion 8. The rotation preventing means 11 is disposed between the first support part 7 and the third support part 52.

回転防止手段11の長さは、固定挟持部2と可動挟持部3とが最も接近した状態(図２の状態)のとき、回転防止手段11の上端部(可動挟持部側端部)が可動挟持部3の連結部34の下面に接近した状態となり、両挟持部が最も離れた状態(図３の状態)のときに第二支持部8に接触する長さにしている。さらに、この回転防止手段11には、図１に示すように、各挟持片21の間隔が測れるように、目盛りが設けられている。   The length of the anti-rotation means 11 is such that the upper end (the end of the movable clamping part side) of the anti-rotation means 11 is movable when the fixed clamping part 2 and the movable clamping part 3 are closest to each other (state shown in FIG. 2). The length is close to the lower surface of the connecting portion 34 of the sandwiching portion 3, and the length is in contact with the second support portion 8 when both the sandwiching portions are in the most distant state (state of FIG. 3). Further, as shown in FIG. 1, the rotation preventing means 11 is provided with a scale so that the interval between the holding pieces 21 can be measured.

そして、固定挟持部2と間隔調整機構4と可動挟持部3とを組み付けるには、図１から図３に示すように、まず、第二支持部8に可動挟持部3を組み付ける。具体的には、第二支持部8の軸孔82と、可動挟持部3の軸受部33に形成した軸受孔の位置を合わせて、可動支持軸51をこれら孔に挿通する。この可動支持軸51は、ボルトになっており、螺子部にナットを螺合させて締め付けることにより、可動挟持部3が第二支持部8に対して可動に支持された状態となる。   And in order to assemble the fixed clamping part 2, the space | interval adjustment mechanism 4, and the movable clamping part 3, first, the movable clamping part 3 is assembled | attached to the 2nd support part 8, as shown in FIGS. Specifically, the position of the bearing hole formed in the shaft hole 82 of the second support part 8 and the bearing part 33 of the movable clamping part 3 is matched, and the movable support shaft 51 is inserted into these holes. The movable support shaft 51 is a bolt, and the movable sandwiching portion 3 is movably supported with respect to the second support portion 8 by screwing and tightening a nut to the screw portion.

次に、第三支持部52に締付用螺子軸53を、その上端部が最低高さとなる位置まで、嵌め込んでおく。そして、固定挟持部2に固定した第一支持部7に支持用螺子軸6の第一雄螺子部61を螺合させるとともに、支持用螺子軸6の第二雄螺子部62に第二支持部8を螺合させて、支持用螺子軸6を回転させることにより、支持用螺子軸6を第一支持部7と第二支持部8に嵌め込む。   Next, the fastening screw shaft 53 is fitted into the third support portion 52 until the upper end portion is at the minimum height. Then, the first male screw portion 61 of the supporting screw shaft 6 is screwed into the first supporting portion 7 fixed to the fixed clamping portion 2, and the second supporting portion is connected to the second male screw portion 62 of the supporting screw shaft 6. By screwing 8 and rotating the support screw shaft 6, the support screw shaft 6 is fitted into the first support portion 7 and the second support portion 8.

このとき、支持用螺子軸6を回転させると、ターンバックル構成により、支持用螺子軸6が第一支持部7に入り込んでいくとともに、第二支持部8は、回転防止手段11により供回りが阻止されながら第二支持部8に入り込んでいく。   At this time, when the supporting screw shaft 6 is rotated, the supporting screw shaft 6 enters the first supporting portion 7 due to the turnbuckle structure, and the second supporting portion 8 is rotated by the rotation preventing means 11. It enters the second support part 8 while being blocked.

そして、間隔調整機構4の高さを図２の最小挟持幅の状態図にしておく。このとき、図２に示すように、可動挟持部3の挟持片31が固定挟持部2の挟持片21と平行の状態となるようにするか、または、係合爪側がやや開いた状態となるように、可動挟持部3を締付用螺子軸53の大径部53bで支持しておく。可動挟持部3の挟持片31がこの状態となっているときは、挟持片31のサブスタック9への押圧が解除されている状態となる。   Then, the height of the distance adjusting mechanism 4 is set to the state diagram of the minimum clamping width in FIG. At this time, as shown in FIG. 2, the clamping piece 31 of the movable clamping part 3 is in a state parallel to the clamping piece 21 of the fixed clamping part 2, or the engagement claw side is slightly opened. As described above, the movable holding portion 3 is supported by the large diameter portion 53b of the screw shaft 53 for fastening. When the clamping piece 31 of the movable clamping unit 3 is in this state, the pressing of the clamping piece 31 to the sub-stack 9 is released.

このように組み付けられて構成されたクランプ治具1を用いて、レドックスフロー電池を構成するサブスタックを挟持する場合について図５に基づいて説明する。ところで、レドックスフロー電池は、通常、複数の板状セル91が積層されたセル積層体が用いられる。   The case where the sub-stack which comprises a redox flow battery is clamped using the clamp jig | tool 1 comprised by comprised in this way is demonstrated based on FIG. By the way, a redox flow battery usually uses a cell laminate in which a plurality of plate-like cells 91 are laminated.

板状セル91は、図示していないが、双極板を有するセルフレーム、カーボンフェルト製の正極電極、隔膜、カーボンフェルト製の負極電極を備える。この板状セル91を、図５に示すように、複数(例えば１０個から３０個)積層し、その積層方向両端に給排板92を配置させてサブスタック9を構成している。なお、図５では省略して板状セル91の数は少なく記載している。   Although not shown, the plate cell 91 includes a cell frame having a bipolar plate, a positive electrode made of carbon felt, a diaphragm, and a negative electrode made of carbon felt. As shown in FIG. 5, a plurality of (for example, 10 to 30) such plate-like cells 91 are stacked, and supply / discharge plates 92 are arranged at both ends in the stacking direction to constitute a sub-stack 9. In FIG. 5, the number of plate-like cells 91 is omitted and omitted.

レドックスフロー電池では、このサブスタック9を複数積層し、積層方向両端に、エンドプレートを配置し、２枚のエンドプレートに連結棒を貫通させて、連結棒をナットで締め付けることにより、エンドプレートでサブスタック9を積層方向に締め付けて積層状態を保持している。   In the redox flow battery, a plurality of the sub-stacks 9 are stacked, end plates are arranged at both ends in the stacking direction, the connecting rods are passed through the two end plates, and the connecting rods are tightened with nuts. The substack 9 is clamped in the stacking direction to maintain the stacked state.

レドックスフロー電池の製造過程において、サブスタック9を複数積層するに当たって、サブスタック9の各板状セル91と給排板92が積層された状態で位置がずれないようにするために、通常は、クランプ治具で積層状態を固定している。   In the manufacturing process of the redox flow battery, when stacking a plurality of sub-stacks 9, in order to prevent the position from being shifted in a state where each plate cell 91 and supply / discharge plate 92 of the sub-stack 9 are stacked, The laminated state is fixed with a clamp jig.

本実施形態のクランプ治具1は、サブスタック9の積層状態が崩れないように所定の高締付力でサブスタック9を挟持でき、しかも、給排板92の端面に段部加工を施すことによって、多数のサブスタック9をクランプ治具1で挟持したまま、積層していくことができるようにしたものである。   The clamping jig 1 of the present embodiment can hold the sub stack 9 with a predetermined high tightening force so that the laminated state of the sub stack 9 does not collapse, and further, the end surface of the supply / discharge plate 92 is processed with a stepped portion. Thus, a large number of sub-stacks 9 can be stacked while being clamped by the clamp jig 1.

まず、図５に示すように、正負両方の給排板92に、その外周縁部で、クランプ治具1を取り付ける位置に、クランプ治具1の挟持片21の厚みよりも深さが深い段状の凹部93を形成しておく。   First, as shown in FIG. 5, a step deeper than the thickness of the clamping piece 21 of the clamp jig 1 at the position where the clamp jig 1 is attached to both the positive and negative supply / discharge plates 92 at the outer peripheral edge thereof. A concave recess 93 is formed.

そして、給排板92と板状セル91とが積層されたサブスタック9の厚みに合わせて、クランプ治具1の挟持片21の間隔を調整する。   Then, the interval between the clamping pieces 21 of the clamp jig 1 is adjusted according to the thickness of the sub-stack 9 in which the supply / discharge plate 92 and the plate-like cell 91 are laminated.

この間隔の調整は、間隔調整機構4である支持用螺子軸6を回転させることにより粗調整を行う。この粗調整は、間隔調整機構4が支持用螺子軸6と第一支持部7と第二支持部8とにより構成されるターンバックル機構となっているので、支持用螺子軸6を１回転させると、第一支持部7と第二支持部8とで長さが変動し従来のＣ型クランプの場合の２倍の変動量が得られる。しかも、螺子山のピッチを粗くしているので、間隔の粗調整を短時間で行うことができる。   The adjustment of the interval is performed by roughly adjusting the support screw shaft 6 which is the interval adjusting mechanism 4. In this rough adjustment, the interval adjusting mechanism 4 is a turnbuckle mechanism constituted by the support screw shaft 6, the first support portion 7 and the second support portion 8, so that the support screw shaft 6 is rotated once. Then, the length varies between the first support portion 7 and the second support portion 8, and a variation amount twice that of the conventional C-type clamp can be obtained. In addition, since the pitch of the screw thread is rough, rough adjustment of the interval can be performed in a short time.

そして、サブスタック9の積層厚みよりも大きくなるように挟持片21の間隔を調整した後、クランプ治具1の挟持片21,31を凹部93に嵌め合わす。   Then, after adjusting the interval between the holding pieces 21 so as to be larger than the laminated thickness of the sub-stack 9, the holding pieces 21 and 31 of the clamp jig 1 are fitted into the recesses 93.

次に、締付用螺子軸53の大径部53bが、可動挟持部3の連結部34に当接するまで締付用螺子軸53を回転させ、大径部53bが連結部34に当接した時点からさらに締付用螺子軸53を回転させて、連結部34を押し上げていく。この連結部34の押し上げは、挟持片31の挟持爪32に所定の押圧力が付与されるまで行う。締付用螺子軸53も螺子山のピッチを粗くしているので、締付力の調整も短時間で行うことができる。   Next, the fastening screw shaft 53 is rotated until the large-diameter portion 53b of the fastening screw shaft 53 comes into contact with the connecting portion 34 of the movable holding portion 3, and the large-diameter portion 53b comes into contact with the connecting portion 34. The screw shaft 53 for tightening is further rotated from the time point, and the connecting portion 34 is pushed up. The connecting portion 34 is pushed up until a predetermined pressing force is applied to the clamping claws 32 of the clamping piece 31. Since the screw shaft 53 for tightening also has a rough thread pitch, the tightening force can be adjusted in a short time.

また、サブスタック9の給排板92の外周縁部に形成される凹部93は、クランプ治具1の挟持片21の厚みよりも深さが深いので、凹部93に挟持片21が所定の締付力で当接した状態のときには、挟持片21が給排板92から突出しない。   Further, the recess 93 formed on the outer peripheral edge of the supply / discharge plate 92 of the sub-stack 9 is deeper than the thickness of the clamping piece 21 of the clamp jig 1, so that the clamping piece 21 is fixed to the recess 93 with a predetermined tightening. The clamping piece 21 does not protrude from the supply / discharge plate 92 when it is in contact with the applied force.

このように凹部93を形成しているので、クランプ治具1でサブスタック9を挟持したときに、挟持片21が給排板から突出しないし、挟持片21の間に間隔調整機構4と締付機構5とが配置されるので、これら機構がサブスタック9から積層方向に突出することがない。   Since the concave portion 93 is formed in this way, when the sub stack 9 is clamped by the clamp jig 1, the clamping piece 21 does not protrude from the supply / discharge plate, and the gap adjusting mechanism 4 and the clamping mechanism 21 are not tightened. Since the attaching mechanism 5 is disposed, these mechanisms do not protrude from the sub-stack 9 in the stacking direction.

従って、このクランプ治具1でサブスタック9を所定の締付力で挟持したまま、複数のサブスタック9を積層していくことができる。その結果、積層されたサブスタックをエンドプレートで挟持し、連結棒で締め付けた後に、クランプ治具1を取り外すことができるので、サブスタック9の積層工程中に板状セル91や給排板92の位置がずれてしまうことが無くなり、高品質のセルスタックを短時間で製造することができる。   Therefore, a plurality of sub-stacks 9 can be stacked while the sub-stack 9 is held with a predetermined tightening force by the clamping jig 1. As a result, the clamp jig 1 can be removed after the stacked sub-stacks are clamped by the end plates and tightened with the connecting rods, so that the plate-like cells 91 and the supply / discharge plates 92 can be removed during the sub-stack 9 stacking process. Therefore, a high-quality cell stack can be manufactured in a short time.

しかも、各挟持片21,31は、間隔調整機構4の支持用螺子軸6と、締付機構5の締付用螺子軸53とで支持された状態で、締付力が与えられるので、これら２本の螺子軸で締付力を分散でき、強固な締付力が得られる。さらに、締付機構5は、挟持片31を、可動支点を支点としたテコの原理により押し上げる構成としているので、締付用螺子軸53による押圧力がさほど大きくなくとも、強固な締付力が得られ、締付用螺子軸の破損も起こりにくい。従って、従来のＣ型クランプの螺子軸のように螺子ピッチを小さくしなくても、十分な高締付力が得られかつ、維持できる。   In addition, each clamping piece 21, 31 is given a tightening force in a state where it is supported by the support screw shaft 6 of the distance adjusting mechanism 4 and the tightening screw shaft 53 of the tightening mechanism 5. The tightening force can be dispersed by the two screw shafts, and a strong tightening force can be obtained. Further, since the clamping mechanism 5 is configured to push up the clamping piece 31 according to the lever principle using the movable fulcrum as a fulcrum, even if the pressing force by the clamping screw shaft 53 is not so large, a strong clamping force is obtained. As a result, the screw shaft for fastening is not easily damaged. Therefore, a sufficient high tightening force can be obtained and maintained without reducing the screw pitch as in the conventional screw shaft of the C-type clamp.

さらに、本実施形態では、回転防止手段11を設け、さらに回転防止手段11に目盛りを形成しているので、位置合わせを容易にできながら、支持用螺子軸6が第一支持部7及び第二支持部8から抜け落ちるのを防止でき、挟持片の挟持幅の調整を行う際の作業性を向上できる。   Further, in the present embodiment, the rotation preventing means 11 is provided, and the scale is formed on the rotation preventing means 11, so that the supporting screw shaft 6 can be easily aligned with the first support portion 7 and the second support portion 7. It is possible to prevent the support portion 8 from falling off and improve workability when adjusting the clamping width of the clamping piece.

本発明のクランプ治具は、特にレドックスフロー電池を構成するサブスタックを固定するために用いる場合に好適である。   The clamp jig of the present invention is particularly suitable when used for fixing the sub-stack constituting the redox flow battery.

本発明のクランプ治具の全体斜視図である。It is a whole perspective view of the clamp jig of the present invention. 本発明のクランプ治具の全体側面図であって、挟持幅が最小の状態のときを示す。It is a whole side view of the clamp jig | tool of this invention, Comprising: When the clamping width | variety is the minimum state, it shows. 本発明のクランプ治具の全体側面図であって、挟持幅が最大の状態のときを示す。It is a whole side view of the clamp jig of the present invention, and shows the state where the clamping width is in the maximum state. 本発明のクランプ治具の第二支持部の斜視図である。It is a perspective view of the 2nd support part of the clamp jig | tool of this invention. 本発明のクランプ治具でレドックスフロー電池のサブスタックを挟持している状態を示す斜視図である。It is a perspective view which shows the state which is clamping the substack of a redox flow battery with the clamp jig | tool of this invention.

符号の説明Explanation of symbols

1 クランプ治具
2 固定挟持部
21 挟持片 22 係合爪 23 保護部
24 第一貫通孔 25 第二貫通孔
3 可動挟持部
31 挟持片 32 係合爪 33 軸受部
34 連結部 35 挿通孔
4 間隔調整機構
6 支持用螺子軸
61 第一雄螺子部 62 第二雄螺子部 63 ナット部
7 第一支持部 71 雌螺子部
8 第二支持部 81 雌螺子部 82 軸孔
5 締付機構
51 可動支持軸 52 第三支持部 52a 雌螺子部
53 締付用螺子軸 53a 雄螺子部 53b 大径部
11 回転防止手段
9 サブスタック 91 板状セル 92 給排板 93 凹部 1 Clamp jig
2 Fixed clamping part
21 Clamping piece 22 Engaging claw 23 Protection part
24 1st through hole 25 2nd through hole
3 Movable clamping part
31 Clamping piece 32 Engaging claw 33 Bearing part
34 Connecting part 35 Insertion hole
4 Spacing adjustment mechanism
6 Supporting screw shaft
61 First male screw part 62 Second male screw part 63 Nut part
7 First support 71 Female thread
8 Second support part 81 Female thread part 82 Shaft hole
5 Tightening mechanism
51 Movable support shaft 52 Third support 52a Female thread
53 Tightening screw shaft 53a Male screw part 53b Large diameter part
11 Rotation prevention means
9 Substack 91 Plate cell 92 Supply / discharge plate 93 Recess

Claims (4)

積層体を所定の圧力で積層方向に押圧して挟持するクランプ治具であって、
積層体を挟持するための板状の挟持片を有する固定挟持部と、板状の挟持片を有し、挟持方向に可動する可動挟持部と、これら挟持片の間隔を調整する間隔調整機構と、可動挟持部の挟持片に積層体への押圧力を付与する締付機構とを備え、
間隔調整機構は、
支持用螺子軸と、
この支持用螺子軸の一端側と螺合する雌螺子部を有し、固定挟持部に固定される第一支持部と、
支持用螺子軸の他端側が回転可能に嵌め合わされ、可動挟持部を支持する第二支持部とを備え、
締付機構は、
第二支持部に対して可動挟持部を挟持方向に可動に支持する可動支持軸と、
雌螺子部を有し、固定挟持部における可動支点に対して積層体の挟持位置とは反対側に固定される第三支持部と、
第三支持部と螺合し、可動挟持部における可動支点に対して積層体の挟持位置とは反対側に圧接可能な締付用螺子軸とを備え、
対向する挟持片の間に間隔調整機構及び締付機構が配置されていることを特徴とするクランプ治具。 A clamp jig for pressing and sandwiching the laminated body in a laminating direction with a predetermined pressure,
A fixed clamping part having a plate-like clamping piece for clamping the laminate, a movable clamping part having a plate-like clamping piece and movable in the clamping direction, and an interval adjusting mechanism for adjusting the interval between the clamping pieces; A clamping mechanism for applying a pressing force to the laminate on the clamping piece of the movable clamping unit,
The interval adjustment mechanism
A supporting screw shaft;
A first support portion having a female screw portion screwed with one end side of the screw shaft for support, and fixed to the fixed clamping portion;
The other end side of the supporting screw shaft is rotatably fitted, and includes a second supporting portion that supports the movable holding portion,
The tightening mechanism
A movable support shaft that movably supports the movable holding portion in the holding direction with respect to the second support portion;
A third support portion having a female screw portion and fixed to the side opposite to the sandwiching position of the laminate with respect to the movable fulcrum in the fixed sandwiching portion;
A fastening screw shaft that is screwed to the third support portion and can be pressed against the movable fulcrum of the movable holding portion on the side opposite to the holding position of the laminate,
A clamp jig characterized in that an interval adjusting mechanism and a tightening mechanism are arranged between opposing clamping pieces. 支持用螺子軸は、螺子山の方向が互いに反対方向となる２つの雄螺子部を有し、第二支持部は、支持用螺子軸の前記他端側に形成する雄螺子部と螺合する雌螺子部を有していることを特徴とする請求項１に記載のクランプ治具。   The supporting screw shaft has two male screw portions whose screw thread directions are opposite to each other, and the second supporting portion is screwed with a male screw portion formed on the other end side of the supporting screw shaft. The clamp jig according to claim 1, further comprising a female screw portion. 締付用螺子軸は、可動挟持部側端面から所定位置に形成される大径部を有し、この大径部の端面を可動挟持部に当接させるようにしていることを特徴とする請求項１または請求項２に記載のクランプ治具。   The fastening screw shaft has a large-diameter portion formed at a predetermined position from the end surface on the movable clamping portion side, and the end surface of the large-diameter portion is brought into contact with the movable clamping portion. The clamp jig according to claim 1 or claim 2. 支持用螺子軸の回転により、第二支持部が供回りするのを防止する回転防止手段を備え、この回転防止手段に間隔調整用の目盛りを設けていることを特徴とする請求項１から請求項３の何れかに記載のクランプ治具。   2. A rotation prevention means for preventing the second support portion from rotating due to the rotation of the support screw shaft, and a scale for adjusting the interval is provided on the rotation prevention means. Item 4. The clamping jig according to any one of Items 3 to 3.
JP2006099615A 2006-03-31 2006-03-31 Clamping fixture Pending JP2007268676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006099615A JP2007268676A (en) 2006-03-31 2006-03-31 Clamping fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006099615A JP2007268676A (en) 2006-03-31 2006-03-31 Clamping fixture

Publications (1)

Publication Number Publication Date
JP2007268676A true JP2007268676A (en) 2007-10-18

Family

ID=38672000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006099615A Pending JP2007268676A (en) 2006-03-31 2006-03-31 Clamping fixture

Country Status (1)

Country Link
JP (1) JP2007268676A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107845461A (en) * 2017-12-07 2018-03-27 深圳市杰普特光电股份有限公司 Positioning fixture
CN112310464A (en) * 2020-11-30 2021-02-02 湖南电将军新能源有限公司 A lamination anchor clamps for electric core monomer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107845461A (en) * 2017-12-07 2018-03-27 深圳市杰普特光电股份有限公司 Positioning fixture
CN107845461B (en) * 2017-12-07 2024-03-29 深圳市杰普特光电股份有限公司 Positioning fixture
CN112310464A (en) * 2020-11-30 2021-02-02 湖南电将军新能源有限公司 A lamination anchor clamps for electric core monomer
CN112310464B (en) * 2020-11-30 2022-05-27 湖南电将军新能源有限公司 A lamination anchor clamps for electric core monomer

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