JP2019002496A - Shaft member insertion structure - Google Patents

Shaft member insertion structure Download PDF

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JP2019002496A
JP2019002496A JP2017118205A JP2017118205A JP2019002496A JP 2019002496 A JP2019002496 A JP 2019002496A JP 2017118205 A JP2017118205 A JP 2017118205A JP 2017118205 A JP2017118205 A JP 2017118205A JP 2019002496 A JP2019002496 A JP 2019002496A
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shaft member
hole
sleeve
tapered portion
tapered
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陽一郎 正田
Yoichiro Shoda
陽一郎 正田
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

To prevent a cylindrical member from dropping off.SOLUTION: A guide member 30 is inserted into a cylindrical member 6 which is press-fitted and fixed into an end of a sleeve 5 that is formed in a battery module 1. The guide member 30 includes a tapered part 32 of which an outer peripheral surface becomes a tapered surface 32a. A taper angle of the tapered surface 32 is set in such a manner that a front end of the guide member is positioned at an inner peripheral side of an inner end of the cylindrical member which is positioned in the sleeve 5 even in the case where a rear end of the tapered part 32 is brought into contact with an inner peripheral surface of the sleeve 5 during the insertion into the sleeve 5, and is set in such a manner that force acting on the cylindrical member 6 becomes smaller than force retaining the cylindrical member 6 in the sleeve 5 in the case where the inner end of the cylindrical member 6 is brought into contact with the tapered part 32.SELECTED DRAWING: Figure 6

Description

本発明は、例えば、ワークに形成された貫通穴の端部に圧入固定された筒状部材に軸部材を挿入してなる軸部材挿入構造に関する。   The present invention relates to a shaft member insertion structure in which, for example, a shaft member is inserted into a cylindrical member press-fitted and fixed to an end portion of a through hole formed in a workpiece.

例えば、特許文献１には、電池モジュールの筐体に形成された貫通穴の開口部に筒状部材が圧入固定され、貫通穴及び筒状部材に複数の電池モジュールを連結するボルトが挿入される構成が開示されている。筒状部材は、はとめ等の圧入された部品である。   For example, in Patent Document 1, a cylindrical member is press-fitted and fixed in an opening portion of a through hole formed in a casing of a battery module, and bolts that connect a plurality of battery modules are inserted into the through hole and the cylindrical member. A configuration is disclosed. The cylindrical member is a press-fitted part such as a fit.

国際公開第２０１４／０４５７５７号公報International Publication No. 2014/045757

しかしながら、このような特許文献１においては、貫通穴にボルトを挿入させる際に、ボルトの先端が貫通穴の内部に位置する筒状部材の内側端に当たると場合がある。   However, in Patent Document 1, when the bolt is inserted into the through hole, the tip of the bolt may hit the inner end of the cylindrical member located inside the through hole.

このとき、筒状部材には、ボルトを挿入しようとする力が軽減されずに作用する。   At this time, the force to insert the bolt acts on the cylindrical member without being reduced.

そのため、筒状部材の内側端にボルトが突き当てられた時に、貫通穴から筒状部材が抜け落ちてしまう虞がある。   Therefore, when the bolt is abutted against the inner end of the tubular member, the tubular member may fall out of the through hole.

本発明の軸部材挿入構造は、ワークに形成された貫通穴の端部に圧入固定された筒状部材に軸部材を挿入してなるものである。上記軸部材は、先端側ほど先細りとなるよう外周面がテーパ面となったテーパ部を有している。上記テーパ部のテーパ角度は、上記貫通穴に挿入する際に上記テーパ部の後端が上記貫通穴の内周面に接触しても、上記貫通穴の内部に位置する上記筒状部材の内側端の内周側に上記軸部材の先端が位置するよう設定されるとともに、上記筒状部材の内側端が上記テーパ部に接触した際に上記筒状部材に作用する力が上記筒状部材を上記貫通穴に保持している力よりも小さくなるよう設定される。   The shaft member insertion structure of the present invention is formed by inserting a shaft member into a cylindrical member press-fitted and fixed to an end portion of a through hole formed in a workpiece. The shaft member has a tapered portion whose outer peripheral surface becomes a tapered surface so as to be tapered toward the distal end side. The taper angle of the tapered portion is determined by the inner side of the cylindrical member located inside the through hole even when the rear end of the tapered portion contacts the inner peripheral surface of the through hole when inserted into the through hole. The end of the shaft member is set to be positioned on the inner peripheral side of the end, and the force acting on the cylindrical member when the inner end of the cylindrical member contacts the tapered portion causes the cylindrical member to It is set to be smaller than the force held in the through hole.

本発明によれば、軸部材をワークに挿入する際に、軸部材から筒状部材に作用する力が低減されて貫通穴から筒状部材が抜け落ちることを抑制できるとともに、軸部材をワークに円滑に挿入することができる。   According to the present invention, when the shaft member is inserted into the workpiece, the force acting on the cylindrical member from the shaft member is reduced, and the cylindrical member can be prevented from falling out of the through hole, and the shaft member can be smoothly inserted into the workpiece. Can be inserted into.

電池モジュールの斜視図。The perspective view of a battery module. 電池モジュールの分解斜視図。The exploded perspective view of a battery module. 図１のＫ−Ｋ線に沿った断面図。Sectional drawing along the KK line | wire of FIG. 筒状部材の斜視図。The perspective view of a cylindrical member. 組電池の製造過程を模式的に示した説明図。Explanatory drawing which showed the manufacturing process of the assembled battery typically. ガイド部材の挿入構造を模式的に示した説明図。Explanatory drawing which showed typically the insertion structure of a guide member. テーパ部が筒状部材の先端部に接触した際に発生する力Ｆ１〜Ｆ５の向きを模式的に示した説明図。Explanatory drawing which showed typically direction of force F1-F5 generate | occur | produced when a taper part contacts the front-end | tip part of a cylindrical member. 突き上げ力Ｆ６と、スリーブが筒状部材を保持する力Ｆ７との相関関係を模式的示した説明図。Explanatory drawing which showed typically the correlation of pushing-up force F6 and the force F7 by which a sleeve hold | maintains a cylindrical member. ガイド部材の挿入時に、筒状部材がスリーブから抜け落ちない場合の一例を模式的に示した説明図。Explanatory drawing which showed typically an example when a cylindrical member does not fall out from a sleeve at the time of insertion of a guide member. ガイド部材の挿入時に、筒状部材がスリーブから抜け落ちてしまう場合の一例を模式的に示した説明図。Explanatory drawing which showed typically an example when a cylindrical member falls out of a sleeve at the time of insertion of a guide member. ガイド部材の挿入時に、筒状部材がスリーブから抜け落ちてしまう場合の一例を模式的に示した説明図。Explanatory drawing which showed typically an example when a cylindrical member falls out of a sleeve at the time of insertion of a guide member. ガイド部材の挿入時に、ガイド部材が筒状部材を貫通できない場合の一例を模式的に示した説明図。Explanatory drawing which showed typically an example in case a guide member cannot penetrate a cylindrical member at the time of insertion of a guide member. ガイド部材の挿入時に、ガイド部材のスリーブ内で傾きが最大で、かつスリーブ軸方向におけるガイド部材の先端位置がスリーブ軸方向におけるが筒状部材の先端部の先端位置にある状態を模式的に示した説明図。Fig. 5 schematically shows a state where the inclination of the guide member in the sleeve is maximum when the guide member is inserted, and the tip position of the guide member in the sleeve axis direction is at the tip position of the tip portion of the cylindrical member in the sleeve axis direction. Explanatory drawing.

以下、本発明の一実施例を図面に基づいて詳細に説明する。   Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

図１〜図３は、本発明が適用される電池モジュール１を示している。図１は、電池モジュール１の斜視図である。図２は、電池モジュール１の分解斜視図である。図３は、電池モジュール１の要部断面図であって、図１のＫ−Ｋ線に沿った断面図である。   1 to 3 show a battery module 1 to which the present invention is applied. FIG. 1 is a perspective view of the battery module 1. FIG. 2 is an exploded perspective view of the battery module 1. FIG. 3 is a cross-sectional view of the main part of the battery module 1, and is a cross-sectional view taken along the line KK of FIG.

なお、図１〜図３中におけるＸ軸は、後述する単電池２の積層方向と交差し、かつ、単電池２の長手方向に沿った方向（長手方向Ｘ）を示している。図１〜図３中におけるＹ軸は、単電池２の積層方向と交差し、かつ、単電池２の短手方向に沿った方向（短手方向Ｙ）を示している。図１〜図３中におけるＺ軸は、単電池２の積層方向Ｚを示している。   1 to 3 indicates a direction (longitudinal direction X) that intersects the stacking direction of the single cells 2 described later and is along the longitudinal direction of the single cells 2. 1 to 3 indicates a direction (short direction Y) that intersects the stacking direction of the single cells 2 and is along the short direction of the single cells 2. 1 to 3 indicates the stacking direction Z of the single cells 2.

電池モジュール１は、図１〜図３に示すように、積層された複数のシート状の単電池２と、各単電池２に取り付けられるスペーサ３と、筐体４と、スペーサ３を貫通するスリーブ５と、スリーブ５に圧入固定された筒状部材６と、を有している。   As shown in FIGS. 1 to 3, the battery module 1 includes a plurality of stacked sheet cells 2, a spacer 3 attached to each cell 2, a housing 4, and a sleeve that penetrates the spacer 3. 5 and a cylindrical member 6 press-fitted and fixed to the sleeve 5.

電池モジュール１は、ワークに相当するものであって、扁平な直方体形状（矩形）を呈している。   The battery module 1 corresponds to a work and has a flat rectangular parallelepiped shape (rectangular shape).

単電池２は、例えば外装フィルムでシールされた平坦形状のリチウムイオン二次電池であり、一端側に電極タブ７を有している。   The unit cell 2 is a flat lithium ion secondary battery sealed with, for example, an exterior film, and has an electrode tab 7 on one end side.

スペーサ３は、穴部８を有する短手方向Ｙに沿って細長い板状の部材であり、例えば絶縁性を備えた強化プラスチックスからなっている。   The spacer 3 is a plate-like member that is elongated along the short direction Y having the hole 8, and is made of, for example, reinforced plastics having an insulating property.

スペーサ３は、電極タブ７が突出する単電池２の一端側を支持する第１スペーサ３ａと、単電池２の他端側を支持する第２スペーサ３ｂと、から構成されている。   The spacer 3 includes a first spacer 3 a that supports one end side of the unit cell 2 from which the electrode tab 7 protrudes, and a second spacer 3 b that supports the other end side of the unit cell 2.

第１スペーサ３ａは、単電池２の一端側に沿って配置されている。第１スペーサ３ａは、両側に穴部８ａが形成されている。   The first spacer 3 a is disposed along one end side of the unit cell 2. The first spacer 3a has holes 8a on both sides.

第２スペーサ３ｂは、単電池２の他端側に沿って配置されている。第２スペーサ３ｂは、両側に穴部８ｂが形成されている。   The second spacer 3 b is disposed along the other end side of the single battery 2. The second spacer 3b has holes 8b formed on both sides.

筐体４は、金属製の第１ケース９と第２ケース１０を有している。   The housing 4 has a first case 9 and a second case 10 made of metal.

第１ケース９は、第１主ケース部１１と、長手方向Ｘにおける第１主ケース部１１の両端に接合された第１補強部材１２、１２と、を有している。第１補強部材１２は、第１主ケース部１１よりも、積層方向Ｚにおける肉厚が厚くなるよう形成されている。   The first case 9 includes a first main case portion 11 and first reinforcing members 12 and 12 joined to both ends of the first main case portion 11 in the longitudinal direction X. The first reinforcing member 12 is formed to be thicker in the stacking direction Z than the first main case portion 11.

第２ケース１０は、第２主ケース部１３と、長手方向Ｘにおける第２主ケース部１３の両端に接合された第２補強部材１４、１４と、を有している。第２補強部材１４は、第２主ケース部１３よりも、積層方向Ｚにおける肉厚が厚くなるよう形成されている。   The second case 10 includes a second main case portion 13 and second reinforcing members 14 and 14 joined to both ends of the second main case portion 13 in the longitudinal direction X. The second reinforcing member 14 is formed to be thicker in the stacking direction Z than the second main case portion 13.

第１補強部材１２及び第２補強部材１４は、長手方向Ｘに沿った幅がスペーサ３よりも長く形成されている。   The first reinforcing member 12 and the second reinforcing member 14 are formed so that the width along the longitudinal direction X is longer than the spacer 3.

第１ケース９及び第２ケース１０は、積層された単電池２を、積層方向Ｚで挟み込みようにして収容する。   The first case 9 and the second case 10 accommodate the stacked unit cells 2 so as to be sandwiched in the stacking direction Z.

第１ケース９及び第２ケース１０は、スペーサ３の穴部８に対応する位置に筐体穴部１５が貫通形成されている。   In the first case 9 and the second case 10, a housing hole 15 is formed to penetrate at a position corresponding to the hole 8 of the spacer 3.

第１ケース９及び第２ケース１０は、筐体穴部１５の外周側が、スリーブ５の端面に接している。   In the first case 9 and the second case 10, the outer peripheral side of the housing hole 15 is in contact with the end surface of the sleeve 5.

スリーブ５は、円筒形状を呈し、スペーサ３の穴部８に挿入されている。つまり、スリーブ５は、第１スペーサ３ａの穴部８ａ及び第２スペーサ３ｂの穴部８ｂに挿入されており、電池モジュール１の４隅に位置している。スリーブ５は、例えば、鉄やステンレス等の金属材料からなっている。本実施例では、スリーブ５の内周側が、ワークに形成された貫通穴に相当する。   The sleeve 5 has a cylindrical shape and is inserted into the hole 8 of the spacer 3. That is, the sleeve 5 is inserted into the hole 8 a of the first spacer 3 a and the hole 8 b of the second spacer 3 b and is positioned at the four corners of the battery module 1. The sleeve 5 is made of a metal material such as iron or stainless steel, for example. In the present embodiment, the inner peripheral side of the sleeve 5 corresponds to a through hole formed in the workpiece.

筒状部材６は、いわゆるハトメであり、単電池２が筐体４に収容された状態で、筐体４の筐体穴部１５を貫いてスリーブ５に圧入される。筒状部材６により、筐体４がスリーブ５に対して固定されることになる。なお、筐体４は、最終的には、ボルト２３（後述）による締め付けにより固定される。   The tubular member 6 is a so-called eyelet, and is pressed into the sleeve 5 through the housing hole 15 of the housing 4 in a state where the unit cell 2 is accommodated in the housing 4. The casing 4 is fixed to the sleeve 5 by the cylindrical member 6. The housing 4 is finally fixed by tightening with bolts 23 (described later).

筒状部材６は、図４に示すように、先端部１６と、先端部１６と連続する中間部１７と、中間部１７と連続するフランジ部１８と、を有し、例えば、鉄やステンレス等の金属材料からなっている。先端部１６と、中間部１７及びフランジ部１８は、同軸上に形成されている。スリーブ５に圧入された状態において、先端部１６の先端は筒状部材６の内側位置するため、先端部１６の先端は、筒状部材６の内側端に相当する。   As shown in FIG. 4, the cylindrical member 6 includes a tip portion 16, an intermediate portion 17 that is continuous with the tip portion 16, and a flange portion 18 that is continuous with the intermediate portion 17. Made of metal material. The tip portion 16, the intermediate portion 17 and the flange portion 18 are formed coaxially. Since the tip end of the tip end portion 16 is positioned inside the cylindrical member 6 in the state of being press-fitted into the sleeve 5, the tip end of the tip end portion 16 corresponds to the inner end of the cylindrical member 6.

先端部１６は、先端に向かって徐々に内径及び外径が小さくなるように形成されている。つまり、先端部１６は、テーパ形状に形成されている。   The tip portion 16 is formed so that the inner diameter and the outer diameter gradually decrease toward the tip. That is, the tip 16 is formed in a tapered shape.

中間部１７は、スリーブ５に圧入される前の状態において、スリーブ５の内径よりも僅かに大きな外径の円筒形状に形成されている。   The intermediate portion 17 is formed in a cylindrical shape having an outer diameter slightly larger than the inner diameter of the sleeve 5 before being pressed into the sleeve 5.

フランジ部１８は、中間部１７の基端から外周側に張り出した鍔状を呈している。   The flange portion 18 has a hook shape projecting from the base end of the intermediate portion 17 to the outer peripheral side.

このような電池モジュール１を複数積層することで、組電池２１が構成される。組電池２１は、積層された複数の電池モジュール１と、積層された電池モジュール１を挟み込む上下一対の板部材２２、２２と、電池モジュール１と板部材２２、２２を固定するボルト２３と、を有している。   The assembled battery 21 is configured by stacking a plurality of such battery modules 1. The assembled battery 21 includes a plurality of stacked battery modules 1, a pair of upper and lower plate members 22, 22 that sandwich the stacked battery modules 1, and a bolt 23 that fixes the battery module 1 and the plate members 22, 22. Have.

ボルト２３は、通しボルトであって、電池モジュール１と板部材２２、２２を貫通した後、ナット（図示せず）が取り付けられる。   The bolt 23 is a through bolt, and after passing through the battery module 1 and the plate members 22, 22, a nut (not shown) is attached.

図５は、組電池２１の製造過程を模式的に示した説明図である。組電池２１を製造するにあたっては、例えば、作業台（図示せず）に４本のボルト２３を直立させた状態で保持し、各ボルト２３が電池モジュール１の４隅に位置するスリーブ５を貫通するように、電池モジュール１を積層していく。このとき、４本のボルト２３のうち、対角線上のある一対のボルト２３は、軸部材としての金属製のガイド部材３０によって被覆されている。つまり、ガイド部材３０は、積層された電池モジュール１を連結するボルト２３を被覆している。   FIG. 5 is an explanatory view schematically showing the manufacturing process of the assembled battery 21. In manufacturing the assembled battery 21, for example, four bolts 23 are held upright on a work table (not shown), and each bolt 23 penetrates the sleeve 5 positioned at the four corners of the battery module 1. Thus, the battery modules 1 are stacked. At this time, of the four bolts 23, a pair of diagonal bolts 23 are covered with a metal guide member 30 as a shaft member. That is, the guide member 30 covers the bolts 23 that connect the stacked battery modules 1.

ガイド部材３０は、先端側が先細りしており、電池モジュール１への挿入時に、挿入し易くなっている。   The guide member 30 is tapered at the tip end side and is easy to insert when inserted into the battery module 1.

また、ボルト２３よりも大径のガイド部材３０がスリーブ５を貫通することで、ガイド部材３０を被覆していないボルト２３は、電池モジュール１への挿入時に、挿入し易くなっている。   Further, since the guide member 30 having a diameter larger than that of the bolt 23 penetrates the sleeve 5, the bolt 23 that does not cover the guide member 30 is easily inserted when inserted into the battery module 1.

ガイド部材３０は、肉厚が略一定の筒状の中空部材であって、内径がボルト２３の軸部の外径よりも大径となっている。これは、ガイド部材３０は、組電池２１を構成する部品ではなく、電池モジュール１の積層が終了すると、ボルト２３から抜き取る必要があるからである。   The guide member 30 is a cylindrical hollow member having a substantially constant thickness, and has an inner diameter larger than the outer diameter of the shaft portion of the bolt 23. This is because the guide member 30 is not a component constituting the assembled battery 21 and needs to be extracted from the bolt 23 when the stacking of the battery modules 1 is completed.

ガイド部材３０は、スリーブ５を貫通する際に、筒状部材６も貫通することになる。つまり、ガイド部材３０及びボルト２３は、電池モジュール１を積層する組電池２１の製造過程で、スリーブ５及び筒状部材６に挿入されることになる。   When the guide member 30 penetrates the sleeve 5, the tubular member 6 also penetrates. That is, the guide member 30 and the bolt 23 are inserted into the sleeve 5 and the cylindrical member 6 in the manufacturing process of the assembled battery 21 in which the battery modules 1 are stacked.

ここで、電池モジュール１を積層する際に、スリーブ５の両端に圧入された筒状部材６、６のうち、積層方向Ｚで上方側（図３における上方側）の筒状部材６の先端部１６に、積層方向Ｚで下方側（図３における下方側）からガイド部材３０が突き当てられると、筒状部材６がスリーブ５から脱落する可能性がある。   Here, when stacking the battery modules 1, among the cylindrical members 6, 6 press-fitted into both ends of the sleeve 5, the distal end portion of the cylindrical member 6 on the upper side (upper side in FIG. 3) in the stacking direction Z. When the guide member 30 is abutted against the lower side (the lower side in FIG. 3) in the stacking direction Z, the tubular member 6 may fall off the sleeve 5.

そこで、筒状部材６の先端部１６に、積層方向Ｚで下方側（図３における下方側）からガイド部材３０が突き当てられても、筒状部材６がスリーブ５から脱落することない挿入構造を検討した。   Therefore, even if the guide member 30 is abutted against the distal end portion 16 of the cylindrical member 6 from the lower side (the lower side in FIG. 3) in the stacking direction Z, the cylindrical member 6 does not fall off the sleeve 5. It was investigated.

図６は、ガイド部材３０の挿入構造を模式的に示した説明図である。   FIG. 6 is an explanatory view schematically showing the insertion structure of the guide member 30.

ガイド部材３０は、図６に示すように、先端側に、頂部３１及びテーパ部３２を有している。   As illustrated in FIG. 6, the guide member 30 has a top portion 31 and a tapered portion 32 on the distal end side.

頂部３１は、ガイド部材３０の先端に位置している。頂部３１は、外周面が曲面となり、例えば所定の曲率を有するよう形成されている。   The top 31 is located at the tip of the guide member 30. The top portion 31 has a curved outer peripheral surface, and is formed to have a predetermined curvature, for example.

テーパ部３２は、その外周面が、所定のテーパ角度によって規定される一様なテーパ面３２ａとなっている。詳述すると、テーパ部３２の外形状は、円錐台または円錐となっている。本実施例では、ガイド部材３０の先端が頂部３１となっているので、テーパ部３２の外形状が円錐台となっている。   The outer peripheral surface of the taper portion 32 is a uniform taper surface 32a defined by a predetermined taper angle. More specifically, the outer shape of the tapered portion 32 is a truncated cone or a cone. In this embodiment, since the tip of the guide member 30 is the top portion 31, the outer shape of the tapered portion 32 is a truncated cone.

テーパ部３２は、頂部３１と連続する先端側ほど先細りした形状となっている。つまり、テーパ部３２は、先端側ほど外径が相対的に小径となっている。   The tapered portion 32 has a shape that tapers toward the distal end side continuous with the top portion 31. That is, the taper portion 32 has a relatively smaller outer diameter toward the distal end side.

テーパ部３２の大径側となる後端（基端）は、ガイド部材３０の基部３３と連続している。つまり、テーパ部３２の後端は、基部３３との接続位置にある。   The rear end (base end) on the large diameter side of the tapered portion 32 is continuous with the base portion 33 of the guide member 30. That is, the rear end of the tapered portion 32 is at a connection position with the base portion 33.

基部３３は、ガイド部材３０の軸方向（長手方向）に沿って外径が一定の円形断面となっている。基部３３の内径は、ボルト２３の外径よりも大径となっている。   The base 33 has a circular cross section with a constant outer diameter along the axial direction (longitudinal direction) of the guide member 30. The inner diameter of the base 33 is larger than the outer diameter of the bolt 23.

頂部３１、テーパ部３２、基部３３は、同軸上に形成されている。   The top part 31, the taper part 32, and the base part 33 are formed on the same axis.

図６において、θ1はスリーブ５に対するガイド部材３０の傾きであり、２θ2はガイド部材３０のテーパ部３２のテーパ角度である。なお、スリーブ５に対するガイド部材３０の傾きは、例えば、作業時にばらつきを考慮し、想定される最大傾きとすればよい。 In FIG. 6, θ 1 is the inclination of the guide member 30 with respect to the sleeve 5, and 2θ 2 is the taper angle of the tapered portion 32 of the guide member 30. In addition, the inclination of the guide member 30 with respect to the sleeve 5 may be set to the assumed maximum inclination in consideration of, for example, variations during work.

なお、ガイド部材３０は、先端側にテーパ部３２のみを有する構成とすることも可能である。すなわち、ガイド部材３０は、先端側が円錐台形状や、円錐形状であってもよい。テーパ部３２が円錐台形状の場合、ガイド部材３０の先端側はテーパ部３２のみからなる円錐台形状となるか、頂部３１とテーパ部３２からなる形状となる。テーパ部３２が円錐形状の場合、ガイド部材３０の先端側は、テーパ部３２のみからなる円錐形状となる。   The guide member 30 may have a configuration having only the tapered portion 32 on the distal end side. That is, the guide member 30 may have a truncated cone shape or a cone shape on the distal end side. When the tapered portion 32 has a truncated cone shape, the distal end side of the guide member 30 has a truncated cone shape composed of only the tapered portion 32 or a shape composed of the top portion 31 and the tapered portion 32. When the tapered portion 32 has a conical shape, the distal end side of the guide member 30 has a conical shape including only the tapered portion 32.

ガイド部材３０のテーパ部３２が筒状部材６の先端部１６に接触する場合、スリーブ５に対するガイド部材３０の傾きや、テーパ部３２のテーパ角度と、に応じて筒状部材６に作用するスリーブ軸方向（積層方向Ｚ）に沿った力が変化する。   When the tapered portion 32 of the guide member 30 contacts the distal end portion 16 of the tubular member 6, the sleeve that acts on the tubular member 6 according to the inclination of the guide member 30 with respect to the sleeve 5 and the taper angle of the tapered portion 32. The force along the axial direction (stacking direction Z) changes.

図７は、ガイド部材３０のテーパ部３２が筒状部材６の先端部１６に接触した際に発生する力Ｆ１〜Ｆ５の向きを模式的に示した説明図である。図７における角度θ3は、上述した角度θ2から角度θ1を減じた角度である。つまり、θ3＝θ2−θ1である。 FIG. 7 is an explanatory view schematically showing the directions of the forces F <b> 1 to F <b> 5 that are generated when the tapered portion 32 of the guide member 30 contacts the tip end portion 16 of the cylindrical member 6. The angle θ 3 in FIG. 7 is an angle obtained by subtracting the angle θ 1 from the angle θ 2 described above. That is, θ 3 = θ 2 −θ 1 .

電池モジュール１の質量（重量）をＭ、スリーブ５にガイド部材３０を挿入する際の電池モジュール１の加速度をＧ、ガイド部材３０のテーパ部３２と筒状部材６の先端部１６との間の摩擦係数をＰとする。なお、電池モジュール１の加速度Ｇは、例えば、作業時のばらつきを考慮し、想定される最大加速度とすればよい。   The mass (weight) of the battery module 1 is M, the acceleration of the battery module 1 is G when the guide member 30 is inserted into the sleeve 5, and the gap between the tapered portion 32 of the guide member 30 and the distal end portion 16 of the cylindrical member 6. Let P be the coefficient of friction. The acceleration G of the battery module 1 may be assumed to be the maximum acceleration that is assumed in consideration of, for example, variations during work.

Ｆ１は、電池モジュール１の質量Ｍと電池モジュール１の加速度Ｇとの積で表される。すなわち、「Ｆ１＝ＭＧ」である。   F1 is represented by the product of the mass M of the battery module 1 and the acceleration G of the battery module 1. That is, “F1 = MG”.

Ｆ２は、Ｆ１とｓｉｎθ3との積で表させる。すなわち、「Ｆ２＝Ｆ１ｓｉｎθ3」である。 F2 is expressed by the product of F1 and sin θ 3 . That is, “F2 = F1sin θ 3 ”.

Ｆ２’は、Ｆ２の反力である。   F2 'is the reaction force of F2.

Ｆ３は、Ｆ２と摩擦係数Ｐとの積で表される。すなわち、「Ｆ３＝Ｆ２Ｐ」である。   F3 is represented by the product of F2 and the friction coefficient P. That is, “F3 = F2P”.

Ｆ４は、Ｆ３とｃｏｓθ3との積で表させる。すなわち、「Ｆ４＝Ｆ３ｃｏｓθ3」である。 F4 causes represented by the product of the F3 and cos [theta] 3. That is, “F4 = F3 cos θ 3 ”.

Ｆ５は、Ｆ２'の軸方向成分であり、Ｆ２'とｓｉｎθ3との積で表させる。すなわち、「Ｆ５＝Ｆ２'ｓｉｎθ3」である。 F5 is an axial component of F2 ′ and is expressed by a product of F2 ′ and sin θ 3 . That is, “F5 = F2′sin θ 3 ”.

従って、Ｆ４とＦ５の和で表される力Ｆ６に対して、スリーブ５が筒状部材６を保持する力Ｆ７が大きければ、筒状部材６の先端部１６にガイド部材３０のテーパ部３２が突き当てられても、筒状部材６がスリーブ５から抜け落ちることはない。つまり、筒状部材６に作用する力Ｆ６が筒状部材６を保持する力Ｆ７よりも小さければ、筒状部材６がスリーブ５から抜け落ちることはない。   Therefore, if the force F7 that the sleeve 5 holds the cylindrical member 6 is larger than the force F6 expressed by the sum of F4 and F5, the tapered portion 32 of the guide member 30 is formed at the distal end portion 16 of the cylindrical member 6. Even if it abuts, the tubular member 6 does not fall out of the sleeve 5. That is, as long as the force F <b> 6 acting on the tubular member 6 is smaller than the force F <b> 7 holding the tubular member 6, the tubular member 6 will not fall out of the sleeve 5.

図８は、Ｆ４とＦ５の和で表される力（突き上げ力）Ｆ６と、スリーブ５が筒状部材６を保持する力Ｆ７との相関関係を模式的示した説明図である。図８に示すように、Ｆ４とＦ５の和で表される力Ｆ６は、テーパ部３２のテーパ角度に応じて変化し、テーパ部３２のテーパ角度が大きくなるほど大きくなる。従って、スリーブ５が筒状部材６を保持する力Ｆ７、すなわち圧入された筒状部材６の保持力Ｆ７が決まれば、この保持力Ｆ７よりもＦ６が小さくなるようにテーパ部３２のテーパ角度を設定することになる。   FIG. 8 is an explanatory view schematically showing a correlation between a force (push-up force) F6 expressed by the sum of F4 and F5 and a force F7 at which the sleeve 5 holds the tubular member 6. As shown in FIG. As shown in FIG. 8, the force F6 represented by the sum of F4 and F5 changes according to the taper angle of the taper portion 32, and increases as the taper angle of the taper portion 32 increases. Accordingly, when the force F7 for holding the cylindrical member 6 by the sleeve 5, that is, the holding force F7 of the press-fitted cylindrical member 6, is determined, the taper angle of the tapered portion 32 is set so that F6 becomes smaller than the holding force F7. Will be set.

図９は、スリーブ５へのガイド部材３０の挿入時に、筒状部材６がスリーブ５から抜け落ちない場合の一例を模式的に示した説明図である。   FIG. 9 is an explanatory view schematically showing an example of the case where the cylindrical member 6 does not fall out of the sleeve 5 when the guide member 30 is inserted into the sleeve 5.

図９においては、テーパ部３２のテーパ角度が小さく設定され、筒状部材６をスリーブ５から押し出そうとする力Ｆ６が、筒状部材６をスリーブ５内に保持する力Ｆ７よりも小さくなっている。つまり、図９におけるテーパ部３２のテーパ角度は、力Ｆ６が力Ｆ７よりも小さくなるような角度に設定されている。   In FIG. 9, the taper angle of the taper portion 32 is set to be small, and the force F6 that pushes the cylindrical member 6 out of the sleeve 5 is smaller than the force F7 that holds the cylindrical member 6 in the sleeve 5. ing. That is, the taper angle of the taper portion 32 in FIG. 9 is set to an angle such that the force F6 is smaller than the force F7.

そのため、図９に示す例では、スリーブ５へのガイド部材３０の挿入時に、筒状部材６の先端部がテーパ部３２に接触することで、筒状部材６に作用する力Ｆ６が軽減され、筒状部材６がスリーブ５から抜け落ちることはない。   Therefore, in the example shown in FIG. 9, when the guide member 30 is inserted into the sleeve 5, the distal end portion of the tubular member 6 contacts the tapered portion 32, thereby reducing the force F <b> 6 that acts on the tubular member 6, The tubular member 6 does not fall out of the sleeve 5.

図１０は、スリーブ５へのガイド部材３０の挿入時に、筒状部材６がスリーブ５から抜け落ちてしまう場合の一例を模式的に示した説明図である。   FIG. 10 is an explanatory view schematically showing an example of the case where the tubular member 6 falls out of the sleeve 5 when the guide member 30 is inserted into the sleeve 5.

図１０においては、テーパ部３２のテーパ角度が小さく設定されておらず、筒状部材６をスリーブ５から押し出そうとする力Ｆ６が、筒状部材６をスリーブ５内に保持する力Ｆ７よりも大きくなっている。つまり、図１０におけるテーパ部３２のテーパ角度は、力Ｆ６が力Ｆ７よりも大きくなるような角度に設定されている。   In FIG. 10, the taper angle of the tapered portion 32 is not set small, and the force F6 that pushes the tubular member 6 out of the sleeve 5 is greater than the force F7 that holds the tubular member 6 in the sleeve 5. Is also getting bigger. That is, the taper angle of the taper portion 32 in FIG. 10 is set to an angle such that the force F6 is larger than the force F7.

そのため、図１０に示す例では、スリーブ５へのガイド部材３０の挿入時に、筒状部材６の先端部がテーパ部３２に接触するものの、筒状部材６に作用する力Ｆ６の軽減が不十分なため、筒状部材６がスリーブ５から抜け落ちることになる。   Therefore, in the example shown in FIG. 10, when the guide member 30 is inserted into the sleeve 5, the distal end portion of the tubular member 6 contacts the tapered portion 32, but the force F <b> 6 acting on the tubular member 6 is not sufficiently reduced. For this reason, the cylindrical member 6 falls out of the sleeve 5.

図１１は、スリーブ５へのガイド部材３０の挿入時に、筒状部材６がスリーブ５から抜け落ちてしまう場合の一例を模式的に示した説明図である。   FIG. 11 is an explanatory view schematically showing an example of the case where the tubular member 6 falls out of the sleeve 5 when the guide member 30 is inserted into the sleeve 5.

図１１においては、ガイド部材３０の先端が筒状部材６の頂部３１が接触している。そのため、筒状部材６に作用する力Ｆ６は、筒状部材６の先端部１６がガイド部材３０のテーパ部３２に接触する場合のように軽減されない。従って、図１１に示す例では、筒状部材６をスリーブ５から押し出そうとする力Ｆ６が、筒状部材６をスリーブ５内に保持する力Ｆ７よりも大きくなり、筒状部材６がスリーブ５から抜け落ちることになる。   In FIG. 11, the tip of the guide member 30 is in contact with the top 31 of the cylindrical member 6. Therefore, the force F <b> 6 acting on the tubular member 6 is not reduced as in the case where the distal end portion 16 of the tubular member 6 contacts the tapered portion 32 of the guide member 30. Therefore, in the example shown in FIG. 11, the force F6 that pushes the tubular member 6 out of the sleeve 5 is larger than the force F7 that holds the tubular member 6 in the sleeve 5, and the tubular member 6 becomes the sleeve. It will fall out of 5.

図１２は、スリーブ５へのガイド部材３０の挿入時に、ガイド部材３０が筒状部材６を貫通できない場合の一例を模式的に示した説明図である。   FIG. 12 is an explanatory view schematically showing an example in which the guide member 30 cannot penetrate the cylindrical member 6 when the guide member 30 is inserted into the sleeve 5.

図１２においては、ガイド部材３０の先端が筒状部材６の先端部１６とスリーブ５の内周面との間に入り込むため、ガイド部材３０のテーパ部３２に筒状部材６の先端部１６が接触することはない。すなわち、図１２は、テーパ部３２のテーパ角度が小さすぎる場合を示している。   In FIG. 12, since the tip of the guide member 30 enters between the tip portion 16 of the cylindrical member 6 and the inner peripheral surface of the sleeve 5, the tip portion 16 of the cylindrical member 6 is inserted into the taper portion 32 of the guide member 30. There is no contact. That is, FIG. 12 shows a case where the taper angle of the taper portion 32 is too small.

図１２に示す例では、テーパ部３２のテーパ角度は、筒状部材６の先端部１６が接触すれば筒状部材６に作用する力Ｆ６を十分軽減できるほど小さい。しかしながら、図１２に示す例では、テーパ部３２のテーパ角度が小さすぎるため、スリーブ５に軸心に対してガイド部材３０の軸心が傾いた場合に、ガイド部材３０の頂部３１が筒状部材６の先端部１６の外周面に突き当てられている。換言すると、図１２に示す例では、スリーブ半径方向で、ガイド部材３０の頂部３１が筒状部材６と先端部とスリーブ５の内周面との間に入り込んでいる。   In the example shown in FIG. 12, the taper angle of the taper portion 32 is small enough to sufficiently reduce the force F6 acting on the tubular member 6 if the tip portion 16 of the tubular member 6 comes into contact. However, in the example shown in FIG. 12, since the taper angle of the taper portion 32 is too small, the top portion 31 of the guide member 30 is a cylindrical member when the axis of the guide member 30 is inclined with respect to the sleeve 5. 6 is abutted against the outer peripheral surface of the front end portion 16. In other words, in the example shown in FIG. 12, the top portion 31 of the guide member 30 enters between the cylindrical member 6, the tip portion, and the inner peripheral surface of the sleeve 5 in the sleeve radial direction.

つまり、ガイド部材３０のテーパ部３２のテーパ角度を設定するにあたっては、ガイド部材３０のテーパ部３２に筒状部材６の先端部１６が接触可能な範囲でテーパ部３２のテーパ角度を小さくする必要がある。   That is, when setting the taper angle of the taper portion 32 of the guide member 30, it is necessary to reduce the taper angle of the taper portion 32 as long as the tip end portion 16 of the tubular member 6 can contact the taper portion 32 of the guide member 30. There is.

そこで、スリーブ５へのガイド部材３０の挿入時に、スリーブ５の軸心に対してガイド部材３０の軸心が傾いても、筒状部材６の先端部１６には、ガイド部材３０のテーパ部３２が確実に接触するように、テーパ部３２のテーパ角度を設定する。換言すると、スリーブ５に対してガイド部材３０が傾き、テーパ部３２の後端がスリーブ５の内周面に接触しても、ガイド部材３０の頂部３１が筒状部材６の先端部１６の内周側に位置するよう、テーパ部３２のテーパ角度を設定する。   Therefore, when the guide member 30 is inserted into the sleeve 5, even if the axis of the guide member 30 is inclined with respect to the axis of the sleeve 5, the tapered portion 32 of the guide member 30 is formed on the distal end portion 16 of the cylindrical member 6. The taper angle of the taper portion 32 is set so as to ensure contact. In other words, even if the guide member 30 is inclined with respect to the sleeve 5 and the rear end of the taper portion 32 is in contact with the inner peripheral surface of the sleeve 5, the top portion 31 of the guide member 30 remains inside the distal end portion 16 of the cylindrical member 6. The taper angle of the taper portion 32 is set so as to be positioned on the circumferential side.

詳述すると、図１３に示すような状態において、ガイド部材３０の先端とスリーブ５の内周面との距離Ｃが、筒状部材６の先端部１６の内周側端とスリーブ５の内周面との距離Ｄよりも大きくなるようにテーパ部３２のテーパ角度を設定する。   More specifically, in the state shown in FIG. 13, the distance C between the tip of the guide member 30 and the inner peripheral surface of the sleeve 5 is such that the inner peripheral side end of the tip 16 of the tubular member 6 and the inner periphery of the sleeve 5. The taper angle of the taper portion 32 is set so as to be larger than the distance D to the surface.

図１３は、ガイド部材３０のスリーブ５内で傾きが最大で、かつスリーブ軸方向におけるガイド部材３０の先端位置がスリーブ軸方向におけるが筒状部材６の先端部１６の先端位置にある状態を模式的に示している。   FIG. 13 schematically shows a state in which the inclination of the guide member 30 is maximum within the sleeve 5 and the distal end position of the guide member 30 in the sleeve axial direction is at the distal end position of the distal end portion 16 of the tubular member 6 in the sleeve axial direction. Is shown.

なお、ガイド部材３０がテーパ部３２の小径側となる前端と連続する頂部３１を有す場合には、図１３中に破線で示すように仮想線をひいて先端がテーパ部３２のみで構成されたものと見なして計算する。   In addition, when the guide member 30 has the top part 31 which continues with the front end used as the small diameter side of the taper part 32, as shown by a broken line in FIG. Calculate as if

図１３におけるθ1、２θ2、θ3及びＡ、Ｂ、Ｅ、Ｈは、以下のように定義される。 In FIG. 13, θ 1 , 2θ 2 , θ 3 and A, B, E, and H are defined as follows.

θ1は、スリーブ５の軸心に対するガイド部材３０の軸心の傾き角である。 θ 1 is an inclination angle of the axis of the guide member 30 with respect to the axis of the sleeve 5.

θ1は、上述したように、例えば、作業時にばらつきを考慮し、スリーブ５の軸心に対するガイド部材３０の軸心の想定される最大傾きである。 As described above, θ 1 is an assumed maximum inclination of the axis of the guide member 30 with respect to the axis of the sleeve 5 in consideration of, for example, variations during work.

２θ2は、ガイド部材３０のテーパ部３２のテーパ角度である。 2θ 2 is the taper angle of the taper portion 32 of the guide member 30.

θ3は、ガイド部材３０のテーパ部３２とスリーブ５の内周面とのなす角度である。詳述すると、θ3は、スリーブ５の軸直角方向視におけるガイド部材３０のテーパ部３２とスリーブ５の内周面とのなす角度である。 θ 3 is an angle formed by the tapered portion 32 of the guide member 30 and the inner peripheral surface of the sleeve 5. More specifically, θ 3 is an angle formed between the tapered portion 32 of the guide member 30 and the inner peripheral surface of the sleeve 5 when the sleeve 5 is viewed in the direction perpendicular to the axis.

Ａは、ガイド部材３０の基部３３の外径の半径である。   A is a radius of the outer diameter of the base portion 33 of the guide member 30.

Ｅは、スリーブ５内周の半径である。   E is a radius of the inner periphery of the sleeve 5.

テーパ部３２が円錐台形状の場合、Ｂはテーパ部３２の基端からテーパ面３２ａをガイド部材３０の先端側に延長した際の交点までのテーパ面３２ａに沿った長さ、Ｃはテーパ面３２ａをガイド部材３０の先端側に延長した際の交点とスリーブ５の内周面との距離、Ｈはテーパ部３２の基端からテーパ面３２ａをガイド部材３０の先端側に延長した際の交点がスリーブ５の軸方向で筒状部材６の先端部１６位置にある時のスリーブ５内に基部３３の長さである。   When the tapered portion 32 has a truncated cone shape, B is a length along the tapered surface 32a from the proximal end of the tapered portion 32 to the intersection when the tapered surface 32a is extended to the distal end side of the guide member 30, and C is a tapered surface. The distance between the intersection when 32 a is extended to the distal end side of the guide member 30 and the inner peripheral surface of the sleeve 5, H is the intersection when the tapered surface 32 a is extended from the proximal end of the tapered portion 32 to the distal end side of the guide member 30 Is the length of the base 33 in the sleeve 5 when it is at the position of the distal end portion 16 of the cylindrical member 6 in the axial direction of the sleeve 5

テーパ部３２が円錐形状の場合、Ｂはテーパ部３２のテーパ面３２ａに沿った長さ、Ｃはテーパ部３２の小径側の端部（テーパ部３２の頂点）とスリーブ５の内周面との距離、Ｈはテーパ部３２の小径側の端部（テーパ部の頂点）がスリーブ５の軸方向で筒状部材６の先端部１６位置にある時のスリーブ５内の基部３３の長さである。   When the tapered portion 32 has a conical shape, B is a length along the tapered surface 32 a of the tapered portion 32, C is an end of the tapered portion 32 on the small diameter side (the apex of the tapered portion 32), and the inner peripheral surface of the sleeve 5. , H is the length of the base 33 in the sleeve 5 when the end on the small diameter side (the apex of the taper) of the taper 32 is at the position of the tip 16 of the cylindrical member 6 in the axial direction of the sleeve 5. is there.

ここで、θ1〜θ3は、式（１）のような関係となる。 Here, [theta] 1- [theta] 3 has a relationship as shown in Expression (1).

Figure 2019002496
Figure 2019002496

距離Ｃは、角度θ3を用いると式（２）のように表せる。 The distance C can be expressed as in Expression (2) using the angle θ 3 .

Figure 2019002496
Figure 2019002496

スリーブ５の内径２Ｅは、傾き角θ1を用いると式（３）のように表せる。 The inner diameter 2E of the sleeve 5 can be expressed as shown in Expression (3) using the inclination angle θ 1 .

Figure 2019002496
Figure 2019002496

式（３）からｓｉｎ（θ1）は、式（４）のように表せる。 From equation (3), sin (θ 1 ) can be expressed as equation (4).

Figure 2019002496
Figure 2019002496

式（４）から傾き角θ1は、式（５）のように表せる。 From equation (4), the tilt angle θ 1 can be expressed as equation (5).

Figure 2019002496
Figure 2019002496

式（２）に式（１）、式（５）を代入すると距離Ｃは、式（６）のように表せる。   By substituting Equation (1) and Equation (5) into Equation (2), the distance C can be expressed as Equation (6).

Figure 2019002496
Figure 2019002496

そして、式（６）を用いて、距離Ｃが距離Ｄよりも大きくなるように、ガイド部材３０のテーパ部３２のテーパ角度を設定する。   And the taper angle of the taper part 32 of the guide member 30 is set so that the distance C may become larger than the distance D using Formula (6).

以上説明してきたように、上述した実施例においては、スリーブ５の軸心に対してガイド部材３０の軸心が傾き、テーパ部３２の後端がスリーブ５の内周面に接触しても、ガイド部材３０の頂部３１が筒状部材６の先端部１６の内周側に位置する。つまり、ガイド部材３０をスリーブ５に挿入する際には、スリーブ５の軸心に対してガイド部材３０の軸心が傾いても、筒状部材６の先端部１６にガイド部材３０のテーパ部３２を確実に接触させることができる。換言すれば、スリーブ５対してガイド部材３０が傾いていても、ガイド部材３０の頂部３１あるいはガイド部材３０の先端が筒状部材６の先端部１６あるいは筒状部材６の先端部１６の外周面に突き当たることがなく、ガイド部材３０をスリーブ５に円滑に挿入することができる。   As described above, in the embodiment described above, even if the axis of the guide member 30 is inclined with respect to the axis of the sleeve 5 and the rear end of the tapered portion 32 contacts the inner peripheral surface of the sleeve 5, The top portion 31 of the guide member 30 is located on the inner peripheral side of the distal end portion 16 of the cylindrical member 6. That is, when the guide member 30 is inserted into the sleeve 5, even if the axis of the guide member 30 is inclined with respect to the axis of the sleeve 5, the tapered portion 32 of the guide member 30 is formed on the distal end portion 16 of the cylindrical member 6. Can be reliably contacted. In other words, even if the guide member 30 is inclined with respect to the sleeve 5, the top portion 31 of the guide member 30 or the distal end of the guide member 30 is the outer peripheral surface of the distal end portion 16 of the tubular member 6 or the distal end portion 16 of the tubular member 6. The guide member 30 can be smoothly inserted into the sleeve 5 without striking against the sleeve 5.

また、ガイド部材３０をスリーブ５に挿入する際に、ガイド部材３０から筒状部材６に作用する力は、筒状部材６がスリーブ５を保持する力よりも小さく設定されている。   Further, when the guide member 30 is inserted into the sleeve 5, the force acting on the tubular member 6 from the guide member 30 is set to be smaller than the force with which the tubular member 6 holds the sleeve 5.

そのため、ガイド部材３０をスリーブ５に挿入する際に、ガイド部材３０から筒状部材６に作用する力が低減されてスリーブ５から筒状部材６が抜け落ちることを抑制できるとともに、ガイド部材３０をスリーブ５に円滑に挿入することができる。つまり、筒状部材６がスリーブ５から脱落することのないガイド部材３０の挿入構造を実現することができる。   Therefore, when the guide member 30 is inserted into the sleeve 5, the force acting on the tubular member 6 from the guide member 30 can be reduced and the tubular member 6 can be prevented from falling off from the sleeve 5, and the guide member 30 can be removed from the sleeve 5. 5 can be smoothly inserted. That is, it is possible to realize an insertion structure of the guide member 30 in which the cylindrical member 6 does not fall off from the sleeve 5.

さらに言えば、ガイド部材３０を用いることで、電池モジュール１の積層を円滑に実施することができる。換言すれば、ガイド部材３０を用いることで、電池モジュール１を積層してなる組電池２１の生産性向上させることができる。   Furthermore, by using the guide member 30, the battery modules 1 can be smoothly stacked. In other words, the use of the guide member 30 can improve the productivity of the assembled battery 21 formed by stacking the battery modules 1.

１…電池モジュール
２…単電池
３…スペーサ
３ａ…第１スペーサ
３ｂ…第２スペーサ
４…筐体
５…スリーブ
６…筒状部材
７…電極タブ
８…穴部
９…第１ケース
１０…第２ケース
１１…第１主ケース部
１２…第１補強部材
１３…第２主ケース部
１４…第２補強部材
１５…筐体穴部
１６…先端部
１７…中間部
１８…フランジ部
２１…組電池
２２…板部材
２３…ボルト
３０…ガイド部材
３１…頂部
３２…テーパ部
３２ａ…テーパ面
３３…基部 DESCRIPTION OF SYMBOLS 1 ... Battery module 2 ... Single cell 3 ... Spacer 3a ... 1st spacer 3b ... 2nd spacer 4 ... Case 5 ... Sleeve 6 ... Cylindrical member 7 ... Electrode tab 8 ... Hole 9 ... 1st case 10 ... 2nd Case 11 ... 1st main case part 12 ... 1st reinforcement member 13 ... 2nd main case part 14 ... 2nd reinforcement member 15 ... Housing | casing hole part 16 ... Tip part 17 ... Intermediate | middle part 18 ... Flange part 21 ... Assembly battery 22 ... Plate member 23 ... Bolt 30 ... Guide member 31 ... Top part 32 ... Tapered part 32a ... Tapered surface 33 ... Base

Claims (5)

ワークに形成された貫通穴の端部に圧入固定された筒状部材に軸部材を挿入してなる軸部材挿入構造において、
上記軸部材は、上記貫通穴に挿入される先端側に、先端側ほど先細りとなるよう外周面がテーパ面となったテーパ部を有し、
上記テーパ部のテーパ角度は、上記貫通穴に挿入する際に上記テーパ部の後端が上記貫通穴の内周面に接触しても、上記貫通穴の内部に位置する上記筒状部材の内側端の内周側に上記軸部材の先端が位置するよう設定されるとともに、上記筒状部材の内側端が上記テーパ部に接触した際に上記筒状部材に作用する力が上記筒状部材を上記貫通穴に保持している力よりも小さくなるよう設定されることを特徴とする軸部材挿入構造。 In the shaft member insertion structure formed by inserting the shaft member into the cylindrical member press-fitted and fixed to the end portion of the through hole formed in the workpiece,
The shaft member has a tapered portion whose outer peripheral surface becomes a tapered surface on the distal end side to be inserted into the through hole so as to be tapered toward the distal end side,
The taper angle of the tapered portion is determined by the inner side of the cylindrical member located inside the through hole even when the rear end of the tapered portion contacts the inner peripheral surface of the through hole when inserted into the through hole. The end of the shaft member is set to be positioned on the inner peripheral side of the end, and the force acting on the cylindrical member when the inner end of the cylindrical member contacts the tapered portion causes the cylindrical member to A shaft member insertion structure, wherein the shaft member insertion structure is set to be smaller than a force held in the through hole. 上記テーパ部のテーパ角度は、上記ワークの重量及び上記軸部材を上記ワークに挿入する際の上記ワークの最大加速度から算出される上記筒状部材に作用する力が上記筒状部材を上記貫通穴に保持している力よりも小さくなるよう設定されることを特徴とする請求項１に記載の軸部材挿入構造。   The taper angle of the tapered portion is determined by the force acting on the cylindrical member calculated from the weight of the workpiece and the maximum acceleration of the workpiece when the shaft member is inserted into the workpiece. The shaft member insertion structure according to claim 1, wherein the shaft member insertion structure is set to be smaller than a force held in the shaft. 上記軸部材は、上記テーパ部の大径側と連続する円形断面の基部を有し、
上記テーパ部と上記基部との接続位置となる当該テーパ部の後端が上記貫通穴の内周面に接触しているときに、
上記テーパ部のテーパ角度を２θ2、
上記軸部材の上記基部の半径をＡ、
上記貫通穴の半径をＥ、
上記テーパ部が円錐台形状の場合は、上記テーパ部の後端から上記テーパ面を上記軸部材の先端側に延長した際の交点までの当該テーパ面に沿った長さをＢ、上記テーパ面を上記軸部材の先端側に延長した際の交点と上記貫通穴の内周面との距離をＣ、上記テーパ部の後端から上記テーパ面を上記軸部材の先端側に延長した際の交点が上記貫通穴の軸方向で上記筒状部材の先端位置にある時の上記貫通穴にある上記基部の長さをＨとし、
上記テーパ部が円錐形状の場合は、上記テーパ部の当該テーパ面に沿った長さをＢ、上記テーパ部の小径側の端部と上記貫通穴の内周面との距離をＣ、
上記テーパ部の小径側の端部が上記貫通穴の軸方向で上記筒状部材の先端位置にある時の上記貫通穴にある上記基部の長さをＨとすると、
上記テーパ部のテーパ角度は、下記式（１）で表される上記距離Ｃが、上記筒状部材の内側端と上記貫通穴の内周面との距離Ｄよりも大きくなるよう設定されることを特徴とする請求項１または２に記載の軸部材挿入構造。
Figure 2019002496
 The shaft member has a base with a circular cross section that is continuous with the large diameter side of the tapered portion,
When the rear end of the tapered portion, which is the connection position between the tapered portion and the base portion, is in contact with the inner peripheral surface of the through hole,
The taper angle of the taper portion is 2θ 2 ,
A radius of the base of the shaft member is A,
The radius of the through hole is E,
When the tapered portion has a truncated cone shape, the length along the tapered surface from the rear end of the tapered portion to the intersection when the tapered surface is extended to the distal end side of the shaft member is B, the tapered surface C is the distance between the intersection when the shaft member is extended to the distal end side of the shaft member and the inner peripheral surface of the through hole, and the intersection point when the tapered surface is extended from the rear end of the tapered portion to the distal end side of the shaft member H is the length of the base in the through-hole when the is at the tip position of the cylindrical member in the axial direction of the through-hole,
When the tapered portion has a conical shape, the length of the tapered portion along the tapered surface is B, the distance between the small diameter end of the tapered portion and the inner peripheral surface of the through hole is C,
When the end of the taper portion on the small diameter side is at the tip position of the cylindrical member in the axial direction of the through hole, the length of the base portion in the through hole is H.
The taper angle of the tapered portion is set so that the distance C represented by the following formula (1) is larger than the distance D between the inner end of the cylindrical member and the inner peripheral surface of the through hole. The shaft member insertion structure according to claim 1 or 2, wherein
Figure 2019002496
 上記ワークは、シート状の単電池を複数積層した電池モジュールであって、
上記軸部材は、積層された上記電池モジュールを連結するボルトを被覆する筒状の中空部材であることを特徴とする請求項１〜３のいずれかに記載の軸部材挿入構造。 The work is a battery module in which a plurality of sheet-like cells are stacked,
The shaft member insertion structure according to claim 1, wherein the shaft member is a cylindrical hollow member that covers a bolt that connects the stacked battery modules. 上記軸部材は、矩形の上記電池モジュールの４隅を固定する上記ボルトのうち、少なくとも対角線上の一対のボルトを被覆するものであり、
上記軸部材は、上記電池モジュールを積層した後、上記ボルトから抜き取ることが可能であることを特徴とする請求項４に記載の軸部材挿入構造。 The shaft member covers at least a pair of bolts on a diagonal line among the bolts fixing the four corners of the rectangular battery module,
The shaft member insertion structure according to claim 4, wherein the shaft member can be extracted from the bolt after the battery modules are stacked.
JP2017118205A 2017-06-16 2017-06-16 Shaft member insertion structure Pending JP2019002496A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009018408A (en) * 2007-06-12 2009-01-29 Konica Minolta Business Technologies Inc Assembling method of perforated soft member
JP2013012458A (en) * 2011-05-27 2013-01-17 Sony Corp Battery unit, battery module, power storage system, electronic device, power system, and electric vehicle
JP2013158858A (en) * 2012-02-02 2013-08-19 Mitsubishi Electric Corp Plate-like member arranging jig and method of using plate-like member arranging jig
WO2014045757A1 (en) * 2012-09-19 2014-03-27 日産自動車株式会社 Battery assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009018408A (en) * 2007-06-12 2009-01-29 Konica Minolta Business Technologies Inc Assembling method of perforated soft member
JP2013012458A (en) * 2011-05-27 2013-01-17 Sony Corp Battery unit, battery module, power storage system, electronic device, power system, and electric vehicle
JP2013158858A (en) * 2012-02-02 2013-08-19 Mitsubishi Electric Corp Plate-like member arranging jig and method of using plate-like member arranging jig
WO2014045757A1 (en) * 2012-09-19 2014-03-27 日産自動車株式会社 Battery assembly

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