JP2014096217A - Fuse unit - Google Patents

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JP2014096217A
JP2014096217A JP2012245602A JP2012245602A JP2014096217A JP 2014096217 A JP2014096217 A JP 2014096217A JP 2012245602 A JP2012245602 A JP 2012245602A JP 2012245602 A JP2012245602 A JP 2012245602A JP 2014096217 A JP2014096217 A JP 2014096217A
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bolt
terminal
terminal mounting
fuse
mounting
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Mami Nohara
真実 野原
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Yazaki Corp
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Yazaki Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a fuse unit in which a bolt protection wall surrounding the periphery of a plurality of terminal mounting bolts can be prevented from tilting by thermal contraction distortion during resin molding, and a connection terminal board screwed to the terminal mounting bolt can be surely prevented from being erroneously mounted to other than a targeted connection destination, and the terminal board mounting structure.SOLUTION: In a fuse unit 1, a resin fuse body 30 includes a fuse housing part 31 for housing a fuse element 10, a bolt support wall 34 for supporting a plurality of terminal mounting bolts 21, 22, 23 connected to the fuse elements 10 in a projected state, a bolt protection wall 35 raised on the bolt support wall 34 so as to surround three sides of the periphery of each terminal mounting bolt 21, 22, 23, and reinforcement ribs 36 raised so as to make contact with the inner surface of the bolt protection wall 35 for preventing the bolt protection wall 35 from falling, and a plurality of terminal mounting regions S1, S2, S3 can be mutually identified by differences in the mounted positions of the reinforcement ribs 36.

Description

本発明は、ヒューズエレメントに接続された複数の端子取付用ボルトと、これらの端子取付用ボルトの周囲に立設される樹脂製のボルト保護壁と、を備えるヒューズユニットに関する。   The present invention relates to a fuse unit including a plurality of terminal mounting bolts connected to a fuse element, and a resin bolt protection wall standing around the terminal mounting bolts.

図3は、下記特許文献1に開示されたヒューズユニットを示したものである。
このヒューズユニット100は、ヒューズエレメント110と、複数の端子取付用ボルト121,122,123と、これらのヒューズエレメント110及び複数の端子取付用ボルト121,122,123を支持する樹脂製のヒューズボディ130と、を備えている。
FIG. 3 shows a fuse unit disclosed in Patent Document 1 below.
The fuse unit 100 includes a fuse element 110, a plurality of terminal mounting bolts 121, 122, and 123, and a resin fuse body 130 that supports the fuse element 110 and the plurality of terminal mounting bolts 121, 122, and 123. And.

ヒューズエレメント110は、金属板製で、定格以上の電流が流れたときに溶断する複数の可溶部111,112,113を有している。可溶部111,112,113は、細帯状に形成された小断面積の電路部に、当該ヒューズエレメント110の形成材料となる金属板よりも融点の低い低融点金属チップを固定した構造になっている。   The fuse element 110 is made of a metal plate and has a plurality of fusible portions 111, 112, and 113 that melt when a current exceeding the rating flows. The fusible portions 111, 112, and 113 have a structure in which a low melting point metal chip having a melting point lower than that of the metal plate that is a material for forming the fuse element 110 is fixed to an electric circuit portion having a small cross-sectional area formed in a narrow strip shape. ing.

複数の端子取付用ボルト121,122,123は、それぞれの可溶部111,112,113に電流を流すように、各可溶部111,112,113の一端側に一体形成されたボルト接合板111a,112a,113aに接続されている。   The plurality of terminal mounting bolts 121, 122, 123 are bolt joint plates integrally formed on one end side of each soluble portion 111, 112, 113 so that a current flows through each soluble portion 111, 112, 113. 111a, 112a, 113a.

ヒューズボディ130は、樹脂の射出成形品で、ヒューズエレメント110及び複数の端子取付用ボルト121,122,123を支持する。このヒューズボディ130は、ヒューズエレメント110の可溶部111,112,113を収容するヒューズ収容部131と、複数の端子取付用ボルト121,122,123を突出状態に支持するボルト支持壁134と、該ボルト支持壁134に突出した各ボルトの周囲を囲うようにボルト支持壁134に立設されたボルト保護壁135と、を備えている。   The fuse body 130 is an injection molded product of resin, and supports the fuse element 110 and a plurality of terminal mounting bolts 121, 122, 123. The fuse body 130 includes a fuse accommodating portion 131 that accommodates the fusible portions 111, 112, and 113 of the fuse element 110, a bolt support wall 134 that supports a plurality of terminal mounting bolts 121, 122, and 123 in a protruding state, A bolt protection wall 135 erected on the bolt support wall 134 so as to surround each bolt projecting from the bolt support wall 134.

ボルト保護壁135は、端子取付用ボルト121,122,123の延出方向(図3では、矢印X1方向)に沿って立設された板状で、端子取付用ボルト121,122,123の両側に配置されている。これらのボルト保護壁135は、各端子取付用ボルト121,122,123毎に略矩形の端子装着域141,142,143を形成する。   The bolt protection walls 135 are plate-like standing along the extending direction of the terminal mounting bolts 121, 122, 123 (in the direction of arrow X 1 in FIG. 3), and both sides of the terminal mounting bolts 121, 122, 123. Is arranged. These bolt protection walls 135 form substantially rectangular terminal mounting areas 141, 142, and 143 for the respective terminal mounting bolts 121, 122, and 123.

図示はしていないが、各端子装着域141,142,143には、端子取付用ボルト121,122,123にねじ止めする取付穴を有した略矩形の接続端子板が装着される。   Although not shown, each terminal mounting area 141, 142, 143 is mounted with a substantially rectangular connection terminal plate having mounting holes for screwing to the terminal mounting bolts 121, 122, 123.

特開2011−165494号公報JP 2011-165494 A

ところが、ヒューズボディ130に形成するボルト保護壁135は、成形時の熱収縮歪みによって、倒れが生じ易い。そして、ボルト保護壁135にボルト側に傾斜する倒れが生じると、端子装着域141,142,143に接続端子板が取り付けられなくなるという問題があった。   However, the bolt protection wall 135 formed in the fuse body 130 is likely to fall down due to heat shrinkage distortion during molding. When the bolt protection wall 135 is tilted toward the bolt side, there is a problem that the connection terminal plate cannot be attached to the terminal mounting areas 141, 142, and 143.

また、特許文献1における複数の端子装着域141,142,143は、相互を識別するような顕著な構造の相異がなく、例えば、可溶部111,112,113の定格容量が異なっている場合などに、定格容量の識別が簡単にできないために、接続端子板の誤装着を招くおそれもあった。   In addition, the plurality of terminal mounting areas 141, 142, and 143 in Patent Document 1 have no remarkable structural differences that distinguish each other, for example, the rated capacities of the fusible portions 111, 112, and 113 are different. In some cases, the rated capacity cannot be easily identified, which may lead to erroneous mounting of the connection terminal board.

そこで、本発明の目的は、上記課題を解消することに係り、複数の端子取付用ボルトの周囲を囲うボルト保護壁が樹脂成形時の熱収縮歪みによって傾倒することを防止することができ、しかも、前記端子取付用ボルトにねじ止めされる接続端子板が本来の接続先以外に誤装着されることを確実に防止することのできるヒューズユニット、及び端子板取付構造を提供することにある。   Accordingly, an object of the present invention is to solve the above-described problems, and can prevent the bolt protective wall surrounding the plurality of terminal mounting bolts from being inclined due to heat shrinkage distortion during resin molding, It is an object of the present invention to provide a fuse unit and a terminal plate mounting structure that can reliably prevent a connection terminal plate screwed to the terminal mounting bolt from being erroneously attached to other than the original connection destination.

本発明の前述した目的は、下記の構成により達成される。
(1) 定格以上の電流が流れたときに溶断する複数の可溶部を有したヒューズエレメントと、それぞれの可溶部に電流を流すように前記ヒューズエレメントに接続された複数の端子取付用ボルトと、前記ヒューズエレメント及び前記複数の端子取付用ボルトを支持する樹脂製のヒューズボディと、を備え、
前記ヒューズボディは、前記ヒューズエレメントを収容するヒューズ収容部と、前記複数の端子取付用ボルトを突出状態に支持するボルト支持壁と、該ボルト支持壁に突出した前記各端子取付用ボルトの周囲3方を囲うように前記ボルト支持壁に前記端子取付用ボルトの延出方向に沿って立設されて前記各端子取付用ボルト毎に略矩形の端子装着域を形成するボルト保護壁と、前記略矩形の端子装着域の4つの隅部の内の2又は3隅に前記ボルト保護壁の内面と接するように立設されて前記ボルト保護壁の倒れを防止する補強リブと、を備え、
前記複数の端子装着域相互で前記補強リブの装備位置を変えて、前記複数の端子装着域相互を識別可能にしたことを特徴とするヒューズユニット。
The above-described object of the present invention is achieved by the following configuration.
(1) A fuse element having a plurality of fusible parts that melt when a current exceeding the rated current flows, and a plurality of terminal mounting bolts connected to the fuse elements so that current flows through the fusible parts. And a resin fuse body that supports the fuse element and the plurality of terminal mounting bolts,
The fuse body includes a fuse housing portion that houses the fuse element, a bolt support wall that supports the plurality of terminal mounting bolts in a protruding state, and a periphery 3 of each terminal mounting bolt that protrudes from the bolt support wall. A bolt protection wall which is erected along the extending direction of the terminal mounting bolt so as to surround the bolt mounting wall and forms a substantially rectangular terminal mounting area for each terminal mounting bolt; A reinforcing rib that is erected so as to be in contact with the inner surface of the bolt protection wall at two or three corners of the four corners of the rectangular terminal mounting area, and prevents the bolt protection wall from falling down,
A fuse unit characterized in that the plurality of terminal mounting areas can be identified by changing the mounting position of the reinforcing ribs among the plurality of terminal mounting areas.

(2) 上記(1)に記載のヒューズユニットにおいて、
前記補強リブは、前記端子取付用ボルトの延出方向に沿って中空部が形成された筒構造に形成されていることを特徴とするヒューズユニット。
(2) In the fuse unit described in (1) above,
The fuse unit, wherein the reinforcing rib is formed in a cylindrical structure in which a hollow portion is formed along an extending direction of the terminal mounting bolt.

(3) 上記(1)又は(2)に記載のヒューズユニットの前記複数の端子取付用ボルトに前記複数の接続端子板をねじ止めする端子板取付構造であって、
それぞれの前記接続端子板には、本来の接続先の前記端子装着域以外には装着することができないように、本来の接続先の前記端子装着域における前記補強リブの配置に相応した外形を付与したことを特徴とする端子板取付構造。
(3) A terminal plate mounting structure for screwing the plurality of connection terminal plates to the plurality of terminal mounting bolts of the fuse unit according to (1) or (2),
Each of the connection terminal plates is provided with an outer shape corresponding to the arrangement of the reinforcing ribs in the terminal connection area of the original connection destination so that it cannot be installed outside the terminal connection area of the original connection destination. A terminal board mounting structure characterized by that.

上記(1)の構成によれば、端子取付用ボルトの周囲を囲うボルト保護壁の内面と接触するように、補強リブを備えていて、該補強リブがボルト保護壁の傾倒を防止する。そのため、ボルト保護壁が樹脂成形時の歪みによって傾倒することを防止することができる。   According to the configuration of (1) above, the reinforcing rib is provided so as to come into contact with the inner surface of the bolt protective wall surrounding the terminal mounting bolt, and the reinforcing rib prevents the bolt protective wall from being tilted. Therefore, it is possible to prevent the bolt protection wall from being inclined due to distortion during resin molding.

また、ボルト保護壁が形成する複数の端子装着域相互は、補強リブの装備位置を変えていて、補強リブの配置を視認することで、複数の端子装着域相互を簡単に識別可能である。   In addition, the plurality of terminal mounting areas formed by the bolt protection wall can be easily identified by changing the installation position of the reinforcing ribs and visually recognizing the arrangement of the reinforcing ribs.

言い換えると、接続先の補強リブの配置を識別することで、接続先としての適否を簡単に判断することができ、端子取付用ボルトにねじ止めされる接続端子板が本来の接続先以外に誤装着されることを防止することができる。   In other words, by identifying the arrangement of the reinforcing ribs at the connection destination, it is possible to easily determine the suitability as the connection destination, and the connection terminal plate that is screwed to the terminal mounting bolt is not the correct connection destination. It can be prevented from being attached.

上記(2)の構成によれば、補強リブは、中空部が形成されているため、中実の場合と比較して、樹脂材料を節約すると共に、ヒューズユニットの軽量化を図ることができる。   According to the configuration (2), since the hollow portion of the reinforcing rib is formed, the resin material can be saved and the fuse unit can be reduced in weight as compared with the solid case.

上記(3)の構成によれば、接続端子板は、本来の接続先以外の端子装着域には装着することができないように、本来の接続先の端子装着域における補強リブの配置に相応した外形が付与されている。そのため、端子装着域の識別を行わずに接続端子板の装着操作を行った場合でも、誤装着の場合は、接続端子板の装着が完了しないため、誤装着の発生を検知することができる。   According to the configuration of (3) above, the connection terminal plate corresponds to the arrangement of the reinforcing ribs in the terminal mounting area of the original connection destination so that the connection terminal plate cannot be mounted in the terminal mounting area other than the original connection destination. The outline is given. For this reason, even when the connection terminal board is mounted without identifying the terminal mounting area, if the connection terminal board is not mounted in the case of incorrect mounting, the occurrence of erroneous mounting can be detected.

従って、接続端子板が本来の接続先以外に誤装着されることを確実に防止することができる。   Accordingly, it is possible to reliably prevent the connection terminal plate from being erroneously attached to a part other than the original connection destination.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態(以下、「実施形態」という。)を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。   The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

本発明によるヒューズユニットによれば、複数の端子取付用ボルトの周囲を囲うボルト保護壁が樹脂成形時の熱収縮歪みによって傾倒することを防止することができる。しかも、端子取付用ボルトにねじ止めされる接続端子板が本来の接続先以外に誤装着されることを防止することができる。   According to the fuse unit of the present invention, it is possible to prevent the bolt protective wall surrounding the plurality of terminal mounting bolts from being tilted due to heat shrinkage distortion during resin molding. Moreover, it is possible to prevent the connection terminal plate screwed to the terminal mounting bolt from being erroneously attached to other than the original connection destination.

図1は本発明に係るヒューズユニットの一実施形態の斜視図である。FIG. 1 is a perspective view of an embodiment of a fuse unit according to the present invention. 図2は図1に示したヒューズユニットへの端子板取付構造を示す平面図である。FIG. 2 is a plan view showing a terminal plate mounting structure to the fuse unit shown in FIG. 図3は従来のヒューズユニットの斜視図である。FIG. 3 is a perspective view of a conventional fuse unit.

以下、本発明に係るヒューズユニットの好適な実施形態について、図面を参照して詳細に説明する。   Hereinafter, a preferred embodiment of a fuse unit according to the present invention will be described in detail with reference to the drawings.

図1及び図2は本発明の一実施形態を示したもので、図1は本発明の一実施形態のヒューズユニットの斜視図、図2は図1に示したヒューズユニットへの端子板取付構造を示す平面図である。   1 and 2 show an embodiment of the present invention. FIG. 1 is a perspective view of a fuse unit according to an embodiment of the present invention. FIG. 2 is a structure for attaching a terminal plate to the fuse unit shown in FIG. FIG.

この一実施形態のヒューズユニット1は、ヒューズエレメント10と、複数の端子取付用ボルト21,22,23と、これらのヒューズエレメント10及び複数の端子取付用ボルト21,22,23を支持する樹脂製のヒューズボディ30と、を備えている。   The fuse unit 1 of this embodiment includes a fuse element 10, a plurality of terminal mounting bolts 21, 22, and 23, and a resin that supports the fuse element 10 and the plurality of terminal mounting bolts 21, 22, and 23. Fuse body 30.

ヒューズエレメント10は、金属板製で、定格以上の電流が流れたときに溶断する複数の可溶部11a,11b,11c,11d,11e,11fを有している。可溶部11a,11b,11c,11d,11e,11fは、細帯状に形成された小断面積の電路部12に、当該ヒューズエレメント10の形成材料となる金属板よりも融点の低い低融点金属チップを固定した構造になっている。   The fuse element 10 is made of a metal plate and has a plurality of fusible portions 11a, 11b, 11c, 11d, 11e, and 11f that are blown when a current exceeding the rating flows. The fusible portions 11a, 11b, 11c, 11d, 11e, and 11f are low melting point metals having a melting point lower than that of the metal plate that is a material for forming the fuse element 10 in the electric circuit portion 12 having a small cross-sectional area formed in a narrow strip shape. It has a structure with a fixed chip.

複数の端子取付用ボルト21,22,23は、それぞれの可溶部11a,11b,11c,11d,11e,11fに電流を流すように、ヒューズエレメント10における各電路部12の一端側(図1では、上端側)に接続されている。   The plurality of terminal mounting bolts 21, 22, and 23 are connected to one end side of each electric circuit portion 12 in the fuse element 10 (FIG. 1) so that a current flows through the fusible portions 11 a, 11 b, 11 c, 11 d, 11 e, and 11 f. Then, it is connected to the upper end side).

なお、図示はしていないが、端子取付用ボルト21,22,23に接続される各電路部12の一端側は、ボルトを接続し易い平板状に形成されている。   Although not shown, one end side of each electric circuit portion 12 connected to the terminal mounting bolts 21, 22, 23 is formed in a flat plate shape that is easy to connect the bolt.

ヒューズボディ30は、樹脂の射出成形品で、ヒューズエレメント10及び複数の端子取付用ボルト21,22,23を支持する。このヒューズボディ30は、ヒューズエレメント10の可溶部11a,11b,11c,11d,11e,11fを収容するヒューズ収容部31と、複数の端子取付用ボルト21,22,23を突出状態に支持するボルト支持壁34と、該ボルト支持壁34に突出した各ボルトの周囲3方を囲うようにボルト支持壁34に立設されたボルト保護壁35と、ボルト保護壁35の内面と接する(連続する)ようにボルト支持壁34に立設された複数の補強リブ36と、を備える。   The fuse body 30 is an injection molded product of resin, and supports the fuse element 10 and a plurality of terminal mounting bolts 21, 22, and 23. The fuse body 30 supports the fuse accommodating portion 31 that accommodates the fusible portions 11a, 11b, 11c, 11d, 11e, and 11f of the fuse element 10 and a plurality of terminal mounting bolts 21, 22, and 23 in a protruding state. The bolt support wall 34, the bolt protection wall 35 standing on the bolt support wall 34 so as to surround the three sides of each bolt protruding from the bolt support wall 34, and the inner surface of the bolt protection wall 35 are in contact (continuous). And a plurality of reinforcing ribs 36 erected on the bolt support wall 34.

ヒューズ収容部31は、可溶部11a,11b,11c,11d,11e,11fの切断を外部から視認できるように、一側が透明板で覆われる。   The fuse housing part 31 is covered with a transparent plate so that the cutting of the fusible parts 11a, 11b, 11c, 11d, 11e, and 11f can be visually recognized from the outside.

ボルト支持壁34は、端子取付用ボルト21,22,23の高さが揃うように、端子取付用ボルト21,22,23の配列方向(図1の矢印X2方向)に延在する平板状に形成されている。   The bolt support wall 34 has a flat plate shape extending in the arrangement direction of the terminal mounting bolts 21, 22, 23 (arrow X2 direction in FIG. 1) so that the heights of the terminal mounting bolts 21, 22, 23 are aligned. Is formed.

ボルト保護壁35は、端子取付用ボルト21,22,23の延出方向(図1の矢印Y2方向)に沿って延出するように、ボルト支持壁34に立設されている。本実施形態の場合、ボルト保護壁35は、各ボルトの周囲3方を囲うように設けられていて、各端子取付用ボルト21,22,23毎に略矩形の端子装着域S1,S2,S3を形成している。   The bolt protection wall 35 is erected on the bolt support wall 34 so as to extend along the extending direction of the terminal mounting bolts 21, 22, 23 (arrow Y2 direction in FIG. 1). In the case of this embodiment, the bolt protection wall 35 is provided so as to surround the three sides of each bolt, and each of the terminal mounting bolts 21, 22, 23 has a substantially rectangular terminal mounting area S1, S2, S3. Is forming.

補強リブ36は、本実施形態の場合、略矩形の端子装着域S1,S2,S3の4つの隅部の内の3隅に設けられている。また、補強リブ36は、ボルト保護壁35の内面と接する(連続する)ように、ボルト支持壁34に立設されている。   In the present embodiment, the reinforcing ribs 36 are provided at three corners of the four corners of the substantially rectangular terminal mounting areas S1, S2, and S3. Further, the reinforcing rib 36 is erected on the bolt support wall 34 so as to be in contact (continuous) with the inner surface of the bolt protection wall 35.

本実施形態の場合、補強リブ36は、端子取付用ボルト21,22,23の延出方向に沿って中空部36aが形成された筒構造に形成されている。中空部36aは、横断面形状が矩形である。従って、補強リブ36は、角筒構造になっている。   In the case of this embodiment, the reinforcing rib 36 is formed in a cylindrical structure in which a hollow portion 36 a is formed along the extending direction of the terminal mounting bolts 21, 22 and 23. The hollow portion 36a has a rectangular cross-sectional shape. Therefore, the reinforcing rib 36 has a rectangular tube structure.

更に、本実施形態の場合、複数の端子装着域S1,S2,S3相互で補強リブ36の装備位置を変えて、複数の端子装着域S1,S2,S3相互を識別可能にしている。   Furthermore, in the case of this embodiment, the installation position of the reinforcing rib 36 is changed between the plurality of terminal mounting areas S1, S2, and S3 so that the plurality of terminal mounting areas S1, S2, and S3 can be identified.

例えば、それぞれの端子装着域S1,S2,S3を正面から視た場合(図1の矢印Z2方向から視た場合)に、端子装着域S1の場合は、右側の奧側の隅には、補強リブ36を装備していない。また、端子装着域S2の場合は、左側の手前側の隅には、補強リブ36を装備していない。また、端子装着域S3の場合は、左側の奧側の隅には、補強リブ36を装備していない。   For example, when each terminal mounting area S1, S2, S3 is viewed from the front (when viewed from the direction of the arrow Z2 in FIG. 1), in the case of the terminal mounting area S1, the corner on the right heel side is reinforced. The rib 36 is not equipped. Further, in the case of the terminal mounting area S2, the reinforcing ribs 36 are not provided in the left front corner. In the case of the terminal mounting area S3, the reinforcing ribs 36 are not provided at the left side corner.

図2には、各端子取付用ボルト21,22,23にねじ止めする複数の接続端子板51,52,53を示している。   FIG. 2 shows a plurality of connection terminal plates 51, 52, 53 that are screwed to the terminal mounting bolts 21, 22, 23.

接続端子板51は、端子取付用ボルト21にねじ止めされる端子であり、端子装着域S1に装着される。接続端子板52は、端子取付用ボルト22にねじ止めされる端子であり、端子装着域S2に装着される。接続端子板53は、端子取付用ボルト23にねじ止めされる端子であり、端子装着域S3に装着される。   The connection terminal plate 51 is a terminal that is screwed to the terminal mounting bolt 21 and is mounted in the terminal mounting area S1. The connection terminal plate 52 is a terminal that is screwed to the terminal mounting bolt 22 and is mounted in the terminal mounting area S2. The connection terminal plate 53 is a terminal that is screwed to the terminal mounting bolt 23 and is mounted in the terminal mounting area S3.

それぞれの接続端子板51,52,53は、端子装着域S1,S2,S3に載置される接続板部51a,52a,53aと、電線導体を圧着する電線圧着部51b,52b,53bと、を備えている。   Each of the connection terminal plates 51, 52, 53 includes connection plate portions 51a, 52a, 53a placed in the terminal mounting areas S1, S2, S3, wire crimping portions 51b, 52b, 53b for crimping the wire conductors, It has.

それぞれの接続板部51a,52a,53aには、端子取付用ボルト21,22,23を挿通させるためのボルト挿通孔51c,52c,53cが装備されている。   Each of the connection plate portions 51a, 52a, 53a is equipped with bolt insertion holes 51c, 52c, 53c through which the terminal mounting bolts 21, 22, 23 are inserted.

更に、本実施形態の場合、それぞれの接続端子板51,52,53の接続板部51a,52a,53aには、本来の接続先の端子装着域S1,S2,S3以外には装着することができないように、本来の接続先の端子装着域S1,S2,S3における補強リブ36の配置に相応した外形61,62,63を付与している。   Further, in the case of the present embodiment, the connection plate portions 51a, 52a, 53a of the connection terminal plates 51, 52, 53 can be mounted in areas other than the original connection destination terminal mounting areas S1, S2, S3. In order to prevent this, outer shapes 61, 62, 63 corresponding to the arrangement of the reinforcing ribs 36 in the terminal connection areas S1, S2, S3 of the original connection destinations are provided.

例えば、接続端子板51の外形61の場合は、図2の端子装着域S1に対して、右側手前の補強リブ36を逃げる切欠61aと、左側の2つの補強リブ36の外側面に当接する左当接縁61bとが付与されている。   For example, in the case of the outer shape 61 of the connection terminal plate 51, the left side that contacts the notch 61a that escapes the reinforcing rib 36 on the right front side and the outer surface of the two left reinforcing ribs 36 with respect to the terminal mounting area S1 of FIG. A contact edge 61b is provided.

また、接続端子板52の外形62の場合は、図2の端子装着域S2に対して、左側奧の補強リブ36を逃げる切欠62aと、右側の2つの補強リブ36の外側面に当接する右当接縁62bとが付与されている。   In the case of the outer shape 62 of the connection terminal plate 52, a notch 62a that escapes the left side reinforcing rib 36 and a right side that contacts the outer surface of the two right reinforcing ribs 36 with respect to the terminal mounting area S2 of FIG. A contact edge 62b is provided.

また、接続端子板53の外形63の場合は、図2の端子装着域S3に対して、左側手前の補強リブ36を逃げる切欠63aと、右側の2つの補強リブ36の外側面に当接する右当接縁63bとが付与されている。   Further, in the case of the outer shape 63 of the connection terminal plate 53, a notch 63a that escapes the left front reinforcing rib 36 and a right side that contacts the outer surface of the two right reinforcing ribs 36 with respect to the terminal mounting area S3 of FIG. A contact edge 63b is provided.

以上に説明した一実施形態のヒューズユニット1では、端子取付用ボルト21,22,23の周囲を囲うボルト保護壁35の内面と接触するように、補強リブ36を備えていて、該補強リブ36がボルト保護壁35の傾倒を防止する。そのため、ボルト保護壁35が樹脂成形時の歪みによって傾倒することを防止することができる。   The fuse unit 1 according to the embodiment described above includes the reinforcing rib 36 so as to come into contact with the inner surface of the bolt protection wall 35 surrounding the terminal mounting bolts 21, 22, and 23. Prevents the bolt protection wall 35 from tilting. Therefore, it is possible to prevent the bolt protection wall 35 from being tilted due to distortion during resin molding.

また、補強リブ36の装備位置が、2つのボルト保護壁35が交差する隅部の場合は、1本の補強リブ36が同時に2枚のボルト保護壁35の倒れ防止を行うため、補強リブ36の装備数を抑えることができる。   When the reinforcing rib 36 is installed at the corner where the two bolt protection walls 35 intersect, the one reinforcing rib 36 simultaneously prevents the two bolt protecting walls 35 from falling down. The number of equipment can be reduced.

また、ボルト保護壁35が形成する複数の端子装着域S1,S2,S3相互は、補強リブ36の装備位置を変えていて、補強リブ36の配置を視認することで、複数の端子装着域S1,S2,S3相互を簡単に識別可能である。   Further, the plurality of terminal mounting areas S1, S2, S3 formed by the bolt protection wall 35 change the installation position of the reinforcing rib 36, and by visually recognizing the arrangement of the reinforcing rib 36, the plurality of terminal mounting areas S1. , S2 and S3 can be easily identified.

言い換えると、接続先の補強リブ36の配置を識別することで、接続先としての適否を簡単に判断することができ、端子取付用ボルト21,22,23にねじ止めされる接続端子板51,52,53が本来の接続先以外に誤装着されることを防止することができる。   In other words, by identifying the arrangement of the reinforcing ribs 36 at the connection destination, it is possible to easily determine the suitability as the connection destination, and the connection terminal plate 51, which is screwed to the terminal mounting bolts 21, 22, 23. It is possible to prevent 52 and 53 from being erroneously attached to other than the original connection destination.

また、一実施形態のヒューズユニット1では、補強リブ36は、中空部36aが形成されているため、中実の場合と比較して、樹脂材料を節約すると共に、ヒューズユニット1の軽量化を図ることができる。   Further, in the fuse unit 1 of one embodiment, since the reinforcing rib 36 is formed with the hollow portion 36a, the resin material is saved and the fuse unit 1 is reduced in weight as compared with the solid case. be able to.

また、図2に示した一実施形態の端子板取付構造の場合、接続端子板51,52,53は、本来の接続先以外の端子装着域S1,S2,S3には装着することができないように、本来の接続先の端子装着域S1,S2,S3における補強リブ36の配置に相応した外形61,62,63が付与されている。そのため、端子装着域S1,S2,S3の識別を行わずに接続端子板51,52,53の装着操作を行った場合でも、誤装着の場合は、接続端子板51,52,53の装着が完了しないため、誤装着の発生を検知することができる。   Further, in the case of the terminal plate mounting structure of the embodiment shown in FIG. 2, the connection terminal plates 51, 52, 53 cannot be mounted in the terminal mounting areas S1, S2, S3 other than the original connection destination. Further, outer shapes 61, 62, 63 corresponding to the arrangement of the reinforcing ribs 36 in the terminal connection areas S1, S2, S3 of the original connection destination are provided. Therefore, even when the mounting operation of the connection terminal plates 51, 52, 53 is performed without identifying the terminal mounting areas S1, S2, S3, the connection terminal plates 51, 52, 53 are mounted in the case of incorrect mounting. Since it is not completed, it is possible to detect the occurrence of erroneous mounting.

従って、接続端子板51,52,53が本来の接続先以外に誤装着されることを確実に防止することができる。   Accordingly, it is possible to reliably prevent the connection terminal plates 51, 52, 53 from being erroneously attached to other than the original connection destination.

なお、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

例えば、略矩形の端子装着域S1,S2,S3の4つの隅部の内の3隅に補強リブ36を装備したが、補強リブ36の装備位置を2隅に減らすことも可能である。   For example, although the reinforcing ribs 36 are installed at three corners of the four corners of the substantially rectangular terminal mounting areas S1, S2, and S3, the mounting positions of the reinforcing ribs 36 can be reduced to two corners.

また、本発明に係る端子板取付構造において、各接続端子板に付与する外形も、上記実施形態の形状に限らない。例えば、3隅に配置した補強リブ36の配置に対応して、補強リブ36との干渉を逃げる切欠を3箇所に装備した外形にすることもできる。   Moreover, in the terminal board attachment structure which concerns on this invention, the external shape provided to each connection terminal board is not restricted to the shape of the said embodiment. For example, in accordance with the arrangement of the reinforcing ribs 36 arranged at the three corners, it is possible to form an outer shape equipped with three notches for escaping interference with the reinforcing ribs 36.

また、本発明に係るヒューズユニットにおける端子取付用ボルトの装備数や、ヒューズエレメントにおける可溶部の装備位置、ヒューズエレメントにおける電路部の両端部の構造等も、上記実施形態に限定せず、適宜に設計変更可能である。   Also, the number of terminal mounting bolts in the fuse unit according to the present invention, the position of the fusible part in the fuse element, the structure of both ends of the electric circuit part in the fuse element, etc. are not limited to the above embodiment, The design can be changed.

ここで、上述した本発明に係るヒューズユニットの実施形態の特徴をそれぞれ以下[1]〜[3]に簡潔に纏めて列記する。   Here, the features of the above-described embodiment of the fuse unit according to the present invention will be summarized and listed in the following [1] to [3], respectively.

[1] 定格以上の電流が流れたときに溶断する複数の可溶部(11a,11b,11c,11d,11e,11f)を有したヒューズエレメント(10)と、それぞれの可溶部(11a,11b,11c,11d,11e,11f)に電流を流すように前記ヒューズエレメント(10)に接続された複数の端子取付用ボルト(21,22,23)と、前記ヒューズエレメント(10)及び前記複数の端子取付用ボルト(21,22,23)を支持する樹脂製のヒューズボディ(30)と、を備え、
前記ヒューズボディ(30)は、前記ヒューズエレメント(10)を収容するヒューズ収容部(31)と、前記複数の端子取付用ボルト(21,22,23)を突出状態に支持するボルト支持壁(34)と、該ボルト支持壁(34)に突出した前記各端子取付用ボルト(21,22,23)の周囲3方を囲うように前記ボルト支持壁(34)に前記端子取付用ボルト(21,22,23)の延出方向に沿って立設されて前記各端子取付用ボルト(21,22,23)毎に略矩形の端子装着域(S1,S2,S3)を形成するボルト保護壁(35)と、前記略矩形の端子装着域(S1,S2,S3)の4つの隅部の内の2又は3隅に前記ボルト保護壁(35)の内面と接するように立設されて前記ボルト保護壁(35)の倒れを防止する補強リブ(36)と、を備え、
前記複数の端子装着域(S1,S2,S3)相互で前記補強リブ(36)の装備位置を変えて、前記複数の端子装着域(S1,S2,S3)相互を識別可能にしたことを特徴とするヒューズユニット(1)。
[1] A fuse element (10) having a plurality of fusible parts (11a, 11b, 11c, 11d, 11e, 11f) that melts when a current exceeding the rating flows, and the fusible parts (11a, 11a, 11f) 11b, 11c, 11d, 11e, 11f), a plurality of terminal mounting bolts (21, 22, 23) connected to the fuse element (10) so as to pass a current, the fuse element (10) and the plurality A resin fuse body (30) for supporting the terminal mounting bolts (21, 22, 23),
The fuse body (30) includes a fuse housing part (31) for housing the fuse element (10) and a bolt support wall (34) for supporting the plurality of terminal mounting bolts (21, 22, 23) in a protruding state. ) And the terminal mounting bolts (21, 22) on the bolt supporting wall (34) so as to surround three sides of the terminal mounting bolts (21, 22, 23) protruding from the bolt supporting wall (34). 22, 23), and a bolt protection wall that stands up along the extending direction of each terminal mounting bolt (21, 22, 23) and forms a substantially rectangular terminal mounting area (S <b> 1, S <b> 2, S <b> 3). 35) and two or three of the four corners of the substantially rectangular terminal mounting area (S1, S2, S3) are erected so as to be in contact with the inner surface of the bolt protection wall (35). Reinforcement that prevents the protective wall (35) from falling And (36), equipped with a,
The plurality of terminal mounting areas (S1, S2, S3) can be distinguished from each other by changing the mounting position of the reinforcing rib (36) between the plurality of terminal mounting areas (S1, S2, S3). Fuse unit (1).

[2] 上記[1]に記載のヒューズユニット(1)において、
前記補強リブ(36)は、前記端子取付用ボルト(21,22,23)の延出方向に沿って中空部(36a)が形成された筒構造に形成されていることを特徴とするヒューズユニット(1)。
[2] In the fuse unit (1) according to [1] above,
The fuser unit is characterized in that the reinforcing rib (36) is formed in a cylindrical structure in which a hollow portion (36a) is formed along the extending direction of the terminal mounting bolt (21, 22, 23). (1).

[3] 上記[1]又は[2]に記載のヒューズユニット(1)の前記複数の端子取付用ボルト(21,22,23)に前記複数の接続端子板(51,52,53)をねじ止めする端子板取付構造であって、
それぞれの前記接続端子板(51,52,53)には、本来の接続先の前記端子装着域(S1,S2,S3)以外には装着することができないように、本来の接続先の前記端子装着域(S1,S2,S3)における前記補強リブ(36)の配置に相応した外形(61,62,63)を付与したことを特徴とする端子板取付構造。
[3] Screw the plurality of connection terminal plates (51, 52, 53) onto the plurality of terminal mounting bolts (21, 22, 23) of the fuse unit (1) according to [1] or [2]. A terminal plate mounting structure to be stopped,
The terminal of the original connection destination is attached to each of the connection terminal plates (51, 52, 53) so that it cannot be attached to other than the terminal attachment area (S1, S2, S3) of the original connection destination. A terminal plate mounting structure characterized in that an outer shape (61, 62, 63) corresponding to the arrangement of the reinforcing rib (36) in the mounting region (S1, S2, S3) is provided.

1 ヒューズユニット
10 ヒューズエレメント
11a,11b,11c,11d,11e,11f 可溶部
21,22,23 端子取付用ボルト
30 ヒューズボディ
31 ヒューズ収容部
34 ボルト支持壁
35 ボルト保護壁
36 補強リブ
36a 中空部
51,52,53 接続端子板
61,62,63 外形
S1,S2,S3 端子装着域
DESCRIPTION OF SYMBOLS 1 Fuse unit 10 Fuse element 11a, 11b, 11c, 11d, 11e, 11f Fusible part 21, 22, 23 Terminal mounting bolt 30 Fuse body 31 Fuse accommodating part 34 Bolt support wall 35 Bolt protection wall 36 Reinforcement rib 36a Hollow part 51, 52, 53 Connection terminal board 61, 62, 63 Outline S1, S2, S3 Terminal mounting area

Claims (3)

定格以上の電流が流れたときに溶断する複数の可溶部を有したヒューズエレメントと、それぞれの可溶部に電流を流すように前記ヒューズエレメントに接続された複数の端子取付用ボルトと、前記ヒューズエレメント及び前記複数の端子取付用ボルトを支持する樹脂製のヒューズボディと、を備え、
前記ヒューズボディは、前記ヒューズエレメントを収容するヒューズ収容部と、前記複数の端子取付用ボルトを突出状態に支持するボルト支持壁と、該ボルト支持壁に突出した前記各端子取付用ボルトの周囲3方を囲うように前記ボルト支持壁に前記端子取付用ボルトの延出方向に沿って立設されて前記各端子取付用ボルト毎に略矩形の端子装着域を形成するボルト保護壁と、前記略矩形の端子装着域の4つの隅部の内の2又は3隅に前記ボルト保護壁の内面と接するように立設されて前記ボルト保護壁の倒れを防止する補強リブと、を備え、
前記複数の端子装着域相互で前記補強リブの装備位置を変えて、前記複数の端子装着域相互を識別可能にしたことを特徴とするヒューズユニット。
A fuse element having a plurality of fusible portions that melt when a current exceeding the rating flows, a plurality of terminal mounting bolts connected to the fuse element so as to pass current through the respective fusible portions, and A resin fuse body that supports the fuse element and the plurality of terminal mounting bolts, and
The fuse body includes a fuse housing portion that houses the fuse element, a bolt support wall that supports the plurality of terminal mounting bolts in a protruding state, and a periphery 3 of each terminal mounting bolt that protrudes from the bolt support wall. A bolt protection wall which is erected along the extending direction of the terminal mounting bolt so as to surround the bolt mounting wall and forms a substantially rectangular terminal mounting area for each terminal mounting bolt; A reinforcing rib that is erected so as to be in contact with the inner surface of the bolt protection wall at two or three corners of the four corners of the rectangular terminal mounting area, and prevents the bolt protection wall from falling down,
A fuse unit characterized in that the plurality of terminal mounting areas can be identified by changing the mounting position of the reinforcing ribs among the plurality of terminal mounting areas.
請求項1に記載のヒューズユニットにおいて、
前記補強リブは、前記端子取付用ボルトの延出方向に沿って中空部が形成された筒構造に形成されていることを特徴とするヒューズユニット。
The fuse unit according to claim 1, wherein
The fuse unit, wherein the reinforcing rib is formed in a cylindrical structure in which a hollow portion is formed along an extending direction of the terminal mounting bolt.
請求項1又は2に記載のヒューズユニットの前記複数の端子取付用ボルトに前記複数の接続端子板をねじ止めする端子板取付構造であって、
それぞれの前記接続端子板には、本来の接続先の前記端子装着域以外には装着することができないように、本来の接続先の前記端子装着域における前記補強リブの配置に相応した外形を付与したことを特徴とする端子板取付構造。
A terminal plate mounting structure for screwing the plurality of connection terminal plates to the plurality of terminal mounting bolts of the fuse unit according to claim 1 or 2,
Each of the connection terminal plates is provided with an outer shape corresponding to the arrangement of the reinforcing ribs in the terminal connection area of the original connection destination so that it cannot be installed outside the terminal connection area of the original connection destination. A terminal board mounting structure characterized by that.
JP2012245602A 2012-11-07 2012-11-07 Fuse unit Pending JP2014096217A (en)

Priority Applications (1)

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JP2012245602A JP2014096217A (en) 2012-11-07 2012-11-07 Fuse unit

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Country Link
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