JP2018081765A - Conductive member, and grounding structure - Google Patents

Conductive member, and grounding structure Download PDF

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JP2018081765A
JP2018081765A JP2016221670A JP2016221670A JP2018081765A JP 2018081765 A JP2018081765 A JP 2018081765A JP 2016221670 A JP2016221670 A JP 2016221670A JP 2016221670 A JP2016221670 A JP 2016221670A JP 2018081765 A JP2018081765 A JP 2018081765A
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conductive member
curved
side wall
box
spring
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JP6874961B2 (en
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中村　達哉
Tatsuya Nakamura
達哉 中村
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Kitagawa Industries Co Ltd
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Kitagawa Industries Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a conductive member capable of preventing drop-off from a printed wiring board, in a lateral face contact type conductive member.SOLUTION: Provided is a metal conductive member that connects between a first surface and a second surface extending in directions crossing each other. The conductive member comprises: a cylindrical box part whose lateral face abuts on the first surface; and a plate-like spring part extending from an end part of a first side wall including the lateral face or a second side wall opposed to the first side wall. The spring part has: a buffer part that buffers a force in a direction separating from the second surface by elastic deformation; and a curved part provided at a tip side of the spring part from the buffer part. The curved part protrudes from one opening of the box part toward the second surface, and is curved so as to be convex in the protruding direction from the opening. When a force in a direction parallel to the second surface and separating from the first surface is added to the curved part, the tip of the spring part exists in the box part. When a force in a direction parallel to the second surface and approaching the first surface is added to the curved part, the spring part is pressed against an inner surface of the first side wall of the box part.SELECTED DRAWING: Figure 1

Description

本開示は、導電部材に関する。   The present disclosure relates to a conductive member.

プリント配線板は、電磁波から回路等をシールドする目的で板金によって被覆されることがある。この板金は、プリント配線板のグランド配線と電気的に接続されることで、シールドケースとして機能する。   A printed wiring board may be covered with a sheet metal for the purpose of shielding a circuit or the like from electromagnetic waves. This sheet metal functions as a shield case by being electrically connected to the ground wiring of the printed wiring board.

プリント配線板のグランド配線と板金との接続には、一方の端子がプリント配線板の実装面に半田付けされ、他方の端子が板金に押圧される導電部材が用いられる。この導電部材には、プリント配線板と対向配置される板金と接続する上下接触タイプと、プリント配線板に垂直に配置される板金と接続する側面接触タイプ（いわゆるサイドコンタクト）とがある。   For connection between the ground wiring of the printed wiring board and the sheet metal, a conductive member is used in which one terminal is soldered to the mounting surface of the printed wiring board and the other terminal is pressed against the sheet metal. The conductive member includes a vertical contact type that connects to a sheet metal disposed opposite to a printed wiring board, and a side contact type that connects to a sheet metal disposed perpendicular to the printed wiring board (so-called side contact).

側面接触タイプとしては、例えば特許文献１に示されるように、プリント配線板と平行な方向に弾性変形可能なバネ部によって端子間を接続した導電部材が公知である。   As a side contact type, for example, as disclosed in Patent Document 1, a conductive member in which terminals are connected by a spring portion that can be elastically deformed in a direction parallel to a printed wiring board is known.

特開２０１５−２６５０２号公報Japanese Patent Laying-Open No. 2015-26502

側面接触タイプの導電部材では、板金の組み付け時や組み付け後に、板金に当接するバネ部にプリント配線板と垂直な方向に力が加わることがある。例えば、プリント配線板から離れる方向（つまり、上方向）の力がバネ部に加わると、特許文献１の導電部材ではバネ部の先端が導体部の外に飛び出し、導体部のエッジに接触するおそれがある。また、プリント配線板に向かう方向（つまり、下方向）の力がバネ部に加わると、導体部の上板が押し上げられる。これらの現象によって、プリント配線板に半田付けされている下板にはプリント配線板から離間する力が働く。その結果、半田付け部分が剥離し、導電部材がプリント配線板から脱落するリスクがある。   In the side contact type conductive member, a force may be applied in a direction perpendicular to the printed wiring board to the spring portion that contacts the sheet metal during or after the sheet metal is assembled. For example, when a force in a direction away from the printed wiring board (that is, upward) is applied to the spring portion, in the conductive member of Patent Document 1, the tip of the spring portion may jump out of the conductor portion and contact the edge of the conductor portion. There is. Further, when a force in a direction toward the printed wiring board (that is, downward) is applied to the spring portion, the upper plate of the conductor portion is pushed up. Due to these phenomena, a force separating from the printed wiring board acts on the lower board soldered to the printed wiring board. As a result, there is a risk that the soldered part peels off and the conductive member falls off the printed wiring board.

本開示の一局面は、側面接触タイプの導電部材において、プリント配線板からの脱落を防止できる導電部材を提供することを目的としている。   An object of one aspect of the present disclosure is to provide a conductive member that can be prevented from falling off a printed wiring board in a side-contact type conductive member.

本開示の一態様は、互いに交差する方向に延びる第１面と第２面とを導通する金属製の導電部材である。導電部材は、第１面と側面が当接する筒状のボックス部と、ボックス部の第１面と当接する側面を含む第１側壁、又は第１側壁と対向する第２側壁の端部から、この端部を基端として延伸する板状のバネ部とを備える。バネ部は、第２面から離れる方向の力を弾性変形により緩衝する緩衝部と、緩衝部よりもバネ部の先端側に設けられた湾曲部とを有する。湾曲部は、ボックス部の一方の開口から第２面に向かって突出すると共に、開口からの突出方向に凸となるよう湾曲している。バネ部は、第２面と平行かつ第１面から離れる方向の力が湾曲部に加わった際に、ボックス部内にその先端が存在する。また、バネ部は、第２面と平行かつ第１面に向かう方向の力が湾曲部に加わった際に、ボックス部の第１側壁の内面に押圧される。   One aspect of the present disclosure is a metal conductive member that conducts between a first surface and a second surface that extend in directions intersecting each other. The conductive member has a cylindrical box portion that abuts the first surface and the side surface, a first side wall that includes the side surface that abuts the first surface of the box portion, or an end portion of the second side wall that faces the first side wall. A plate-like spring portion extending from the end portion as a base end. The spring portion includes a buffer portion that buffers the force in the direction away from the second surface by elastic deformation, and a curved portion that is provided on the tip side of the spring portion relative to the buffer portion. The curved portion protrudes from the one opening of the box portion toward the second surface and is curved so as to be convex in the protruding direction from the opening. The tip of the spring part exists in the box part when a force parallel to the second surface and away from the first surface is applied to the curved part. The spring portion is pressed against the inner surface of the first side wall of the box portion when a force in a direction parallel to the second surface and toward the first surface is applied to the curved portion.

このような構成によれば、第１面をプリント配線板の実装面、第２面を板金の表面とした際に、板金の表面に平行でプリント配線板から離れる方向（以下、「第１方向」ともいう。）の力がバネ部に加わった際に、バネ部の先端がボックス部のエッジに接触しない。また、板金の表面に平行でプリント配線板に向かう方向（以下、「第２方向」ともいう。）の力がバネ部に加わった際には、半田付け面をプリント配線板側に押圧する力が発生する。そのため、板金の組み付け時又は組み付け後におけるプリント配線板からの導電部材の脱落を防止できる。   According to such a configuration, when the first surface is the mounting surface of the printed wiring board and the second surface is the surface of the sheet metal, the direction parallel to the surface of the sheet metal and away from the printed wiring board (hereinafter referred to as “first direction”). When the force of "" is applied to the spring part, the tip of the spring part does not contact the edge of the box part. In addition, when a force in a direction parallel to the surface of the sheet metal and toward the printed wiring board (hereinafter also referred to as “second direction”) is applied to the spring portion, the force that presses the soldering surface toward the printed wiring board side. Will occur. Therefore, it is possible to prevent the conductive member from falling off the printed wiring board during or after the sheet metal is assembled.

本開示の一態様は、第１側壁の第１面と当接する側面は、ボックス部の中心軸方向において、複数の領域に分割されてもよい。このような構成によれば、湾曲部の突出側の領域（以下、「脚領域」ともいう）を第１面に固定せず、残りの領域（以下、「半田付け領域」ともいう）のみを半田付け等により第１面に固定することができる。これにより、第１方向の力がバネ部に加わった際に、固定されていない脚領域に応力が加わって変形することで、半田付け領域に加わる応力を低減することができる。   In one aspect of the present disclosure, the side surface that contacts the first surface of the first side wall may be divided into a plurality of regions in the central axis direction of the box portion. According to such a configuration, the region on the protruding side of the curved portion (hereinafter also referred to as “leg region”) is not fixed to the first surface, and only the remaining region (hereinafter also referred to as “soldering region”) is used. It can be fixed to the first surface by soldering or the like. Thus, when a force in the first direction is applied to the spring portion, the stress applied to the unfixed leg region is deformed and deformed, so that the stress applied to the soldering region can be reduced.

本開示の一態様は、湾曲部は、第１面及び第２面の双方と平行な仮想線を囲むように湾曲していてもよい。また、バネ部に力が加わっていない状態でボックス部の開口から突出している部分において、湾曲部の湾曲の中心からバネ部の先端に向かう側の平均曲率半径は、湾曲の中心から緩衝部に向かう側の平均曲率半径よりも小さくてもよい。このような構成によれば、第１方向又は第２方向の力に対するバネ部の弾性変形量を大きくすることができる。その結果、第１方向又は第２方向の力が加わった際の応力を低減することができる。   In one aspect of the present disclosure, the curved portion may be curved so as to surround an imaginary line parallel to both the first surface and the second surface. In addition, in the portion protruding from the opening of the box portion in a state where no force is applied to the spring portion, the average radius of curvature on the side from the center of bending of the bending portion toward the tip of the spring portion is from the center of bending to the buffer portion. It may be smaller than the average curvature radius on the side toward. According to such a configuration, the elastic deformation amount of the spring portion with respect to the force in the first direction or the second direction can be increased. As a result, the stress when a force in the first direction or the second direction is applied can be reduced.

本開示の別の態様は、導電部材と、プリント配線板と、プリント配線板にプリント配線板の実装面と垂直となる向きに配設される板金とを備えるグランド対策構造である。導電部材は、プリント配線板の実装面に第１側壁が半田付けされると共に、板金の表面に湾曲部が当接する。このような構成によれば、プリント配線板のグランド配線と板金とを確実に導通しつつ、導電部材の脱落を防止できる。   Another aspect of the present disclosure is a ground countermeasure structure including a conductive member, a printed wiring board, and a sheet metal disposed on the printed wiring board in a direction perpendicular to the mounting surface of the printed wiring board. In the conductive member, the first side wall is soldered to the mounting surface of the printed wiring board, and the curved portion comes into contact with the surface of the sheet metal. According to such a configuration, it is possible to prevent the conductive member from dropping while reliably conducting the ground wiring and the sheet metal of the printed wiring board.

図１は、実施形態の導電部材の模式的な斜視図である。FIG. 1 is a schematic perspective view of a conductive member according to an embodiment. 図２は、図１の導電部材の模式的な側面図である。FIG. 2 is a schematic side view of the conductive member of FIG. 図３Ａは、図１の導電部材の模式的な正面図であり、図３Ｂは、図１の導電部材の模式的な背面図であり、図３Ｃは、図１の導電部材の模式的な平面図であり、図３Ｄは、図１の導電部材の模式的な底面図である。3A is a schematic front view of the conductive member of FIG. 1, FIG. 3B is a schematic rear view of the conductive member of FIG. 1, and FIG. 3C is a schematic plan view of the conductive member of FIG. FIG. 3D is a schematic bottom view of the conductive member of FIG. 1. 図４は、図３ＣのＡ−Ａ線における模式的な断面図である。4 is a schematic cross-sectional view taken along line AA in FIG. 3C. 図５は、図１の導電部材のバネ部に第１方向の力が加わった際の変形状態を示す模式的な断面図である。FIG. 5 is a schematic cross-sectional view showing a deformed state when a force in the first direction is applied to the spring portion of the conductive member of FIG. 1. 図６は、図１の導電部材のバネ部に第２方向の力が加わった際の変形状態を示す模式的な断面図である。6 is a schematic cross-sectional view showing a deformed state when a force in the second direction is applied to the spring portion of the conductive member of FIG.

以下、本開示が適用された実施形態について、図面を用いて説明する。
［１．第１実施形態］
［１−１．構成］
図１〜４に示す導電部材１は、互いに交差する方向に延びる第１面Ｐと第２面Ｑとを導通する金属製の部材である。第１面Ｐは、具体的にはプリント配線板の実装面であり、第２面Ｑは具体的にはプリント配線板の少なくとも一部を囲うシールドケースを構成する板金の内面である。図２Ｂに示すように、第１面Ｐと第２面Ｑとは互いに直交する方向に延びている。 Hereinafter, embodiments to which the present disclosure is applied will be described with reference to the drawings.
[1. First Embodiment]
[1-1. Constitution]
The conductive member 1 shown in FIGS. 1 to 4 is a metal member that conducts electricity between a first surface P and a second surface Q that extend in directions intersecting each other. Specifically, the first surface P is a mounting surface of a printed wiring board, and the second surface Q is specifically an inner surface of a sheet metal constituting a shield case surrounding at least a part of the printed wiring board. As shown in FIG. 2B, the first surface P and the second surface Q extend in directions orthogonal to each other.

図１〜４に示すように、導電部材１は、筒状のボックス部２と、板状のバネ部３とを備える。導電部材１は、１枚の金属板を一定形状に打ち抜いたものを折り曲げることによって形成されている。また、導電部材１は、図中のＹ軸方向の中心を通り、Ｙ軸に垂直な仮想平面に対して対称な形状を有する。   As shown in FIGS. 1 to 4, the conductive member 1 includes a cylindrical box portion 2 and a plate-like spring portion 3. The conductive member 1 is formed by bending a single metal plate punched into a fixed shape. Further, the conductive member 1 has a symmetrical shape with respect to a virtual plane that passes through the center in the Y-axis direction in the drawing and is perpendicular to the Y-axis.

（ボックス部）
ボックス部２は、バネ部３を内部に収納する筒状の部材である。ボックス部２は、第１面Ｐと当接する当接側面２１を有する。ボックス部２は、中心軸が第１面Ｐと平行となるように第１面Ｐ上に配置される。 (Box part)
The box part 2 is a cylindrical member that houses the spring part 3 therein. The box part 2 has a contact side surface 21 that contacts the first surface P. The box portion 2 is disposed on the first surface P so that the central axis is parallel to the first surface P.

ボックス部２は、具体的には四角筒状である。ボックス部２の中心軸と垂直な断面形状は、略長方形状、詳細には略正方形状である。ボックス部２は、当接側面２１を含む第１側壁２Ａと、第１側壁２Ａと平行かつ対向する第２側壁２Ｂと、第１側壁２Ａ及び第２側壁２Ｂの間に垂直に配置された１対の第３側壁２Ｃ，２Ｄとから構成される。   The box part 2 is specifically a rectangular tube shape. The cross-sectional shape perpendicular to the central axis of the box portion 2 is a substantially rectangular shape, specifically a substantially square shape. The box portion 2 is arranged vertically between the first side wall 2A including the contact side surface 21, the second side wall 2B parallel to and opposite to the first side wall 2A, and the first side wall 2A and the second side wall 2B. It is composed of a pair of third side walls 2C and 2D.

ボックス部２の第１側壁２Ａは、図３Ｄに示すように、ボックス部２の中心軸と平行なＸ軸方向、及び中心軸と垂直なＹ軸方向にそれぞれ２つの領域に分割されている。すなわち、当接側面２１は、分割された４つの領域を有する。   As shown in FIG. 3D, the first side wall 2A of the box portion 2 is divided into two regions in the X-axis direction parallel to the central axis of the box portion 2 and in the Y-axis direction perpendicular to the central axis. That is, the contact side surface 21 has four divided areas.

当接側面２１の４つの領域のうち、Ｘ軸方向において第２面Ｑと反対側に位置する２つの半田付け領域２２は、半田付けにより第１面Ｐ（具体的には、プリント配線板のランド部の表面）に電気的に接続されると共に、固定されている。当接側面２１の４つの領域のうち、Ｘ軸方向において第２面Ｑ側に位置する２つの脚領域２３は、第１面Ｐに半田付け等により固定されていない。つまり、脚領域２３は、第１面Ｐに対し相対的に変位できる。そのため、脚領域２３は、変形により当接側面２１に加わる応力を吸収し、半田付け領域２２に加わる応力を緩和することができる。脚領域２３は、第１面Ｐに導電部材１を取り付けた際に、第１面Ｐと当接するように形成されてもよいし、バネ部３に力が加わった際に当接する距離で第１面Ｐと離間するように形成されてもよい。   Of the four regions of the contact side surface 21, the two soldering regions 22 located on the opposite side of the second surface Q in the X-axis direction are soldered to the first surface P (specifically, the printed wiring board). It is electrically connected to the surface of the land portion and fixed. Of the four regions of the contact side surface 21, the two leg regions 23 located on the second surface Q side in the X-axis direction are not fixed to the first surface P by soldering or the like. That is, the leg region 23 can be displaced relative to the first surface P. Therefore, the leg region 23 can absorb the stress applied to the contact side surface 21 due to the deformation, and can relieve the stress applied to the soldering region 22. The leg region 23 may be formed so as to come into contact with the first surface P when the conductive member 1 is attached to the first surface P, or the leg region 23 may contact the first surface P when the force is applied to the spring portion 3. It may be formed so as to be separated from the first surface P.

なお、Ｙ軸と平行に延伸し、半田付け領域２２と脚領域２３とを分割するスリット２４は、導電部材１の半田付けの際に、半田付け領域２２から脚領域２３に半田が流動することを防止する役割を奏する。つまり、スリット２４によって、脚領域２３が第１面Ｐと接合されることが防止される。また、スリット２４は、図２及び図４に示すように、１対の第３側壁２Ｃ，２Ｄにまで延伸している。つまり、１対の第３側壁２Ｃ，２Ｄは、スリット２４による切欠きを有する。   The slit 24 extending parallel to the Y axis and dividing the soldering region 22 and the leg region 23 allows the solder to flow from the soldering region 22 to the leg region 23 when the conductive member 1 is soldered. Plays a role to prevent. That is, the slit 24 prevents the leg region 23 from being joined to the first surface P. Moreover, the slit 24 is extended to a pair of 3rd side walls 2C and 2D, as shown in FIG.2 and FIG.4. That is, the pair of third side walls 2 </ b> C and 2 </ b> D has a notch formed by the slit 24.

ボックス部２の１対の第３側壁２Ｃ，２Ｄは、図２及び図４に示すように中央部分に開口２５をそれぞれ有する。この開口２５には、バネ部３の係合部３７が係合する。開口２５は、長手方向がＸ軸と平行な略長方形状に形成されている。   Each of the pair of third side walls 2C and 2D of the box portion 2 has an opening 25 at the center portion as shown in FIGS. The engaging portion 37 of the spring portion 3 is engaged with the opening 25. The opening 25 is formed in a substantially rectangular shape whose longitudinal direction is parallel to the X axis.

（バネ部）
バネ部３は、ボックス部２の第２側壁２Ｂの第２面Ｑと反対側の端部から、この端部を基端として延伸する板状のバネ部材である。具体的には、バネ部３は、ボックス部２の第２側壁２Ｂから延伸した板状体を複数回湾曲させることで形成されている。 (Spring part)
The spring portion 3 is a plate-like spring member that extends from the end portion of the second side wall 2B of the box portion 2 on the side opposite to the second surface Q with the end portion as a base end. Specifically, the spring part 3 is formed by bending a plate-like body extended from the second side wall 2B of the box part 2 a plurality of times.

バネ部３は、図４に示すように、ボックス部２の第２面Ｑと反対側から、第２面Ｑ側に向かってボックス部２内を貫通している。そのため、バネ部３の幅（つまり、図中Ｙ軸方向の長さ）は、第１側壁２Ａ及び第２側壁２Ｂの幅よりも小さい。また、バネ部３は、ボックス部２内を貫通したのち、第２側壁２Ｂから第１側壁２Ａに向かう方向に延伸しつつ湾曲し、再度ボックス部２内に進入している。   As shown in FIG. 4, the spring portion 3 penetrates the box portion 2 from the side opposite to the second surface Q of the box portion 2 toward the second surface Q side. Therefore, the width of the spring portion 3 (that is, the length in the Y-axis direction in the drawing) is smaller than the width of the first side wall 2A and the second side wall 2B. Further, the spring part 3 penetrates through the box part 2, then curves while extending in the direction from the second side wall 2 </ b> B toward the first side wall 2 </ b> A, and enters the box part 2 again.

具体的には、バネ部３は、ボックス部２の中心軸方向（つまり、図中Ｘ軸方向）の力を弾性変形により緩衝する緩衝部３１と、緩衝部３１よりもバネ部３の先端側に設けられた湾曲部３２と、湾曲部３２よりもバネ部３の先端側に設けられた先端部３３とを有する。なお、「先端側」とは、バネ部３の延伸方向において、バネ部３の基端である第２側壁２Ｂの端部（いわゆる固定端）と反対の側（いわゆる自由端）を意味する。   Specifically, the spring portion 3 includes a buffer portion 31 that cushions the force in the central axis direction of the box portion 2 (that is, the X-axis direction in the figure) by elastic deformation, and the tip side of the spring portion 3 relative to the buffer portion 31 And a distal end portion 33 provided closer to the distal end side of the spring portion 3 than the bending portion 32 is. The “front end side” means a side (so-called free end) opposite to the end (so-called fixed end) of the second side wall 2B which is the base end of the spring part 3 in the extending direction of the spring part 3.

緩衝部３１は、バネ部３の幅方向（つまり、図中Ｙ軸方向）を湾曲の軸とした複数の湾曲部分を含む。図５、６に示すようにバネ部３に力が加わると、緩衝部３１が湾曲部分によって圧縮変形し、力を緩衝する。   The buffer portion 31 includes a plurality of curved portions with the width direction of the spring portion 3 (that is, the Y-axis direction in the figure) as a bending axis. When a force is applied to the spring portion 3 as shown in FIGS. 5 and 6, the buffer portion 31 is compressed and deformed by the curved portion to buffer the force.

本実施形態では、図４に示すように、緩衝部３１は、湾曲部分によって接続された、第１部分３１Ａと、第２部分３１Ｂと、第３部分３１Ｃと、第４部分３１Ｄとを有する。以下、バネ部３に力が加わっていない状態（以下、「定常状態」ともいう。）における各部分の形状を説明すると、第１部分３１Ａは、第２側壁２Ｂの端部から第２方向（つまり、図４中Ｚ軸下方向）に延伸している。第２部分３１Ｂは、第１面Ｐに平行で第２面Ｑに向かう方向（つまり、図中Ｘ軸左方向）に延伸している。第３部分３１Ｃは、バネ部３の根元部分である第２側壁２Ｂの端部に向かう方向（つまり、図中右上方向）に延伸している。第４部分３１Ｄは、第１面Ｐに平行で第２面Ｑに向かう方向に再び延伸している。そのため、定常状態において緩衝部３１は、Ｚ字状の断面形状を有する。   In the present embodiment, as shown in FIG. 4, the buffer portion 31 includes a first portion 31A, a second portion 31B, a third portion 31C, and a fourth portion 31D connected by a curved portion. Hereinafter, the shape of each part in a state in which no force is applied to the spring part 3 (hereinafter, also referred to as “steady state”) will be described. The first part 31A extends from the end of the second side wall 2B in the second direction ( That is, it extends in the Z-axis downward direction in FIG. The second portion 31B extends in the direction parallel to the first surface P and toward the second surface Q (that is, the X axis left direction in the drawing). The third portion 31C extends in the direction toward the end of the second side wall 2B that is the base portion of the spring portion 3 (that is, the upper right direction in the figure). The fourth portion 31D extends again in the direction parallel to the first surface P and toward the second surface Q. Therefore, in the steady state, the buffer part 31 has a Z-shaped cross-sectional shape.

なお、緩衝部３１のうち、第１部分３１Ａと、第２部分３１Ｂの一部とは、ボックス部２の外側に位置し、残りの部分はボックス部２の内部に収納されている。ただし、図５、６に示すように、バネ部３に力が加わった際には、第３部分３１Ｃ及び第４部分３１Ｄの一部がボックス部２から飛び出す場合がある。   In the buffer part 31, the first part 31 </ b> A and a part of the second part 31 </ b> B are located outside the box part 2, and the remaining part is housed inside the box part 2. However, as shown in FIGS. 5 and 6, when a force is applied to the spring portion 3, part of the third portion 31 </ b> C and the fourth portion 31 </ b> D may jump out of the box portion 2.

緩衝部３１は、第１部分３１ＡからＹ軸方向に対称に突出する１対の板状の羽部３４を有する。この羽部３４は、第１部分３１Ａがボックス部２の内部に進入し、緩衝部３１がボックス部２内で変形不能となることを防止する。   The buffer portion 31 has a pair of plate-like wing portions 34 that protrude symmetrically from the first portion 31A in the Y-axis direction. The wing portion 34 prevents the first portion 31 </ b> A from entering the inside of the box portion 2 and prevents the buffer portion 31 from being deformed in the box portion 2.

湾曲部３２は、緩衝部３１と連続して設けられ、定常状態でボックス部２の第２面Ｑ側の開口から突出している部分である。湾曲部３２は、第１面Ｐ及び第２面Ｑの双方と平行な仮想線を囲むように湾曲している。また、湾曲部３２は、開口からの突出方向に（つまり、第２面Ｑに向かって）凸となるよう湾曲している。つまり、湾曲部３２は、Ｙ軸に垂直な仮想平面（Ｘ−Ｚ平面）における断面形状がＣ字状であり、かつこの断面形状がＹ軸方向に変化せずに一定となるように湾曲している。   The curved portion 32 is a portion that is provided continuously with the buffer portion 31 and protrudes from the opening on the second surface Q side of the box portion 2 in a steady state. The curved portion 32 is curved so as to surround an imaginary line parallel to both the first surface P and the second surface Q. Further, the bending portion 32 is curved so as to be convex in the protruding direction from the opening (that is, toward the second surface Q). That is, the bending portion 32 is curved so that the cross-sectional shape in a virtual plane (XZ plane) perpendicular to the Y-axis is C-shaped, and the cross-sectional shape is constant without changing in the Y-axis direction. ing.

具体的には、湾曲部３２は、第２側壁２Ｂ側から第１側壁２Ａ側に向かって、つまり第１面Ｐに向かって延伸しており、その中央部分が第２面Ｑに向かって張り出すように湾曲している。   Specifically, the curved portion 32 extends from the second side wall 2B side toward the first side wall 2A side, that is, toward the first surface P, and its central portion is stretched toward the second surface Q. Curved to get out.

図４に示すように、定常状態でボックス部２の開口から突出している部分において、湾曲部３２の湾曲の中心Ｓから先端部３３に向かう側の領域Ｔ１の平均曲率半径は、湾曲の中心Ｓから緩衝部３１に向かう側の領域Ｔ２の平均曲率半径よりも小さい。ここで、「平均曲率半径」とは、各領域における湾曲部３２の曲率半径を湾曲部３２の延伸方向（つまり、長手方向）に沿って一定間隔で計測した値の平均値である。なお、「湾曲部３２の曲率半径」とは、湾曲の中心軸（つまりＹ軸）に垂直な断面での湾曲部３２の曲率半径を意味する。   As shown in FIG. 4, in the portion protruding from the opening of the box portion 2 in a steady state, the average curvature radius of the region T1 on the side from the center S of the bending portion 32 toward the tip portion 33 is the center S of the bending. Is smaller than the average radius of curvature of the region T2 on the side toward the buffer portion 31. Here, the “average radius of curvature” is an average value of values obtained by measuring the radius of curvature of the curved portion 32 in each region along the extending direction (that is, the longitudinal direction) of the curved portion 32 at regular intervals. The “curvature radius of the curved portion 32” means the radius of curvature of the curved portion 32 in a cross section perpendicular to the central axis of the curve (that is, the Y axis).

湾曲部３２の最突出部分、つまり第２面Ｑに当接する部分の幅方向の中央には、凸部３５が設けられている。凸部３５は、湾曲部３２の一部をボックス部２側から外側に向かって押し出すことで形成されている。   A convex portion 35 is provided at the center in the width direction of the most protruding portion of the curved portion 32, that is, the portion in contact with the second surface Q. The convex part 35 is formed by extruding a part of the curved part 32 outward from the box part 2 side.

また、湾曲部３２は、図６に示すように、板金１０の組み付けにより第２方向の力が湾曲部３２に加わった際に、ボックス部２の第１側壁２Ａの内面に押圧される押圧部分３６を有する。押圧部分３６は、凸部３５と先端部３３との間に位置する。   Further, as shown in FIG. 6, the bending portion 32 is a pressing portion that is pressed against the inner surface of the first side wall 2 </ b> A of the box portion 2 when a force in the second direction is applied to the bending portion 32 by assembling the sheet metal 10. 36. The pressing portion 36 is located between the convex portion 35 and the tip portion 33.

先端部３３は、湾曲部３２の先端側に湾曲部３２から連続して設けられ、定常状態でボックス部２内に収納されている部分である。先端部３３は、湾曲部３２の先端からバネ部３全体の先端までの部分である。   The distal end portion 33 is a portion that is provided continuously from the bending portion 32 on the distal end side of the bending portion 32 and is housed in the box portion 2 in a steady state. The tip portion 33 is a portion from the tip of the bending portion 32 to the tip of the entire spring portion 3.

本実施形態では、図４に示すように、先端部３３は、湾曲部３２から連続し、定常状態において第１方向（つまり、図４中Ｚ軸上方向）に延びる第１部分３３Ａと、この第１部分３３Ａから連続し、定常状態において第１面Ｐと平行で第２面Ｑと反対側に延びる第２部分３３Ｂとを有する。第２部分３３Ｂの先端は、バネ部３の先端である。   In the present embodiment, as shown in FIG. 4, the tip 33 is continuous with the curved portion 32 and extends in the first direction (that is, the Z-axis upward direction in FIG. 4) in a steady state, The second portion 33B is continuous from the first portion 33A and is parallel to the first surface P and extends to the opposite side of the second surface Q in a steady state. The tip of the second portion 33 </ b> B is the tip of the spring portion 3.

図５に示すように、板金１０の組み付けにより第１方向の力が湾曲部３２に加わった際に、先端部３３の先端、すなわちバネ部３の先端は、ボックス部２の内部に存在する。なお、先端部３３の先端は、図６に示すように、第２方向の力が湾曲部３２に加わった際にも、ボックス部２の内部に存在する。つまり、バネ部３の先端は、常にボックス部２内に収納されている。   As shown in FIG. 5, when a force in the first direction is applied to the curved portion 32 by assembling the sheet metal 10, the distal end of the distal end portion 33, that is, the distal end of the spring portion 3 exists inside the box portion 2. Note that, as shown in FIG. 6, the tip of the tip portion 33 exists inside the box portion 2 even when a force in the second direction is applied to the bending portion 32. That is, the tip of the spring part 3 is always stored in the box part 2.

先端部３３は、第２部分３３ＢからＹ軸方向に対称に突出する１対の板状の係合部３７を有する。１対の係合部３７は、それぞれボックス部２の１対の第３側壁２Ｃ，２Ｄの開口２５に係合し、先端部３３の移動を規制する。すなわち、１対の係合部３７と開口２５とによって、先端部３３のＸ軸方向及びＺ軸方向の移動が規制され、湾曲部３２の押圧部分３６が第１側壁２Ａに押圧されるように案内される。また、先端部３３が緩衝部３１に衝突したり、バネ部３が過大に変形したりすることが防止される。   The distal end portion 33 has a pair of plate-like engaging portions 37 that protrude symmetrically from the second portion 33B in the Y-axis direction. The pair of engaging portions 37 are engaged with the openings 25 of the pair of third side walls 2 </ b> C and 2 </ b> D of the box portion 2 to restrict the movement of the tip end portion 33. In other words, the movement of the distal end portion 33 in the X-axis direction and the Z-axis direction is restricted by the pair of engaging portions 37 and the opening 25 so that the pressing portion 36 of the bending portion 32 is pressed against the first side wall 2A. Guided. Moreover, it is prevented that the front-end | tip part 33 collides with the buffer part 31, or the spring part 3 deform | transforms excessively.

［１−２．効果］
以上詳述した実施形態によれば、以下の効果が得られる。
（１ａ）第１方向の力がバネ部３に加わった際に、図５に示すように、バネ部３の先端がボックス部２のエッジに接触しない。また、第２方向の力がバネ部３に加わった際には、図６に示すように、半田付け領域２２をプリント配線板側に押圧する力が発生する。そのため、板金の組み付け時又は組み付け後におけるプリント配線板からの導電部材１の脱落を防止できる。 [1-2. effect]
According to the embodiment detailed above, the following effects can be obtained.
(1a) When a force in the first direction is applied to the spring portion 3, the tip of the spring portion 3 does not contact the edge of the box portion 2 as shown in FIG. Further, when a force in the second direction is applied to the spring portion 3, as shown in FIG. 6, a force for pressing the soldering region 22 toward the printed wiring board is generated. Therefore, it is possible to prevent the conductive member 1 from falling off the printed wiring board during or after the sheet metal is assembled.

（１ｂ）プリント配線板に当接する当接側面２１は、プリント配線板に固定される半田付け領域２２と、プリント配線板に固定されない脚領域２３とを有する。そのため、第１方向の力がバネ部３に加わった際に、脚領域２３が変形することで、半田付け領域２２に加わる応力を低減することができる。その結果、プリント配線板からの導電部材１の脱落防止効果を促進できる。   (1b) The abutting side surface 21 that abuts the printed wiring board has a soldering region 22 fixed to the printed wiring board and a leg region 23 not fixed to the printed wiring board. Therefore, when the force in the first direction is applied to the spring portion 3, the leg region 23 is deformed, so that the stress applied to the soldering region 22 can be reduced. As a result, the effect of preventing the conductive member 1 from falling off the printed wiring board can be promoted.

（１ｃ）湾曲部３２の湾曲の中心Ｓからバネ部３の先端に向かう側の領域Ｔ１の平均曲率半径は、湾曲の中心Ｓから緩衝部３１に向かう側の領域Ｔ２の平均曲率半径よりも小さいので、湾曲部３２の弾性変形量を大きくすることができる。その結果、第１方向又は第２方向の力が加わった際の応力を低減することができる。その結果、プリント配線板からの導電部材１の脱落防止効果を促進できる。   (1c) The average curvature radius of the region T1 on the side from the bending center S of the bending portion 32 toward the tip of the spring portion 3 is smaller than the average curvature radius of the region T2 on the side from the bending center S toward the buffer portion 31. Therefore, the elastic deformation amount of the bending portion 32 can be increased. As a result, the stress when a force in the first direction or the second direction is applied can be reduced. As a result, the effect of preventing the conductive member 1 from falling off the printed wiring board can be promoted.

（１ｄ）湾曲部３２が第１側壁２Ａの内面に押圧される押圧部分３６を有する、つまりバネ部３の湾曲している部分が第１側壁２Ａに当接するので、押圧時に第１側壁２Ａと第１面Ｐとの間に設けられた半田が損傷しにくい。   (1d) The curved portion 32 has a pressing portion 36 that is pressed against the inner surface of the first side wall 2A, that is, the curved portion of the spring portion 3 contacts the first side wall 2A. Solder provided between the first surface P is not easily damaged.

（１ｅ）導電部材１は、１枚の金属板から、溶接や接着等の固定手段を用いずに、折り曲げのみで形成可能な構成を有する。そのため、加工コスト及び材料コストを低減することができる。   (1e) The conductive member 1 has a configuration that can be formed from only one metal plate by bending without using fixing means such as welding or adhesion. Therefore, processing costs and material costs can be reduced.

［２．第２実施形態］
［２−１．構成］
本開示の第２実施形態は、導電部材１と、プリント配線板と、このプリント配線板にプリント配線板の実装面と垂直となる向きに配設される板金とを備えるグランド対策構造である。 [2. Second Embodiment]
[2-1. Constitution]
The second embodiment of the present disclosure is a ground countermeasure structure including the conductive member 1, a printed wiring board, and a sheet metal disposed on the printed wiring board in a direction perpendicular to the mounting surface of the printed wiring board.

プリント配線板の実装面は、上述のように、導電部材１が導通する第１面Ｐに該当し、板金の内面、つまり板金の導電部材１と対向する表面は、導電部材１が導通する第２面Ｑに該当する。   As described above, the mounting surface of the printed wiring board corresponds to the first surface P through which the conductive member 1 conducts, and the inner surface of the sheet metal, that is, the surface facing the conductive member 1 of the sheet metal is the first surface through which the conductive member 1 conducts. It corresponds to 2 side Q.

板金は、電磁波をシールドしたい領域を被覆するシールドケースの壁を構成する。導電部材１は、プリント配線板の実装面Ｐに第１側壁２Ａの半田付け領域２２が半田付けされ、グランド配線と導通されている。また、導電部材１は、板金の表面Ｑに湾曲部３２が当接することで、板金とも導通されている。   The sheet metal constitutes a wall of a shield case that covers an area where electromagnetic waves are desired to be shielded. The conductive member 1 is electrically connected to the ground wiring by soldering the soldering region 22 of the first side wall 2A to the mounting surface P of the printed wiring board. The conductive member 1 is also electrically connected to the sheet metal by the curved portion 32 coming into contact with the surface Q of the sheet metal.

［２−２．効果］
以上詳述した実施形態によれば、以下の効果が得られる。
（２ａ）プリント配線板のグランド配線と板金とを確実に導通しつつ、導電部材の脱落を防止できる。その結果、電磁波シールド効果を維持することができる。特に、自動車等のような振動を受けやすい環境におけるプリント配線板において、振動によって板金から荷重を受けた際の導電部材の脱落を効果的に防止できる。 [2-2. effect]
According to the embodiment detailed above, the following effects can be obtained.
(2a) The conductive member can be prevented from falling off while the ground wiring of the printed wiring board and the sheet metal are reliably conducted. As a result, the electromagnetic wave shielding effect can be maintained. In particular, in a printed wiring board in an environment susceptible to vibration such as an automobile, it is possible to effectively prevent the conductive member from falling off when receiving a load from the sheet metal due to vibration.

［３．他の実施形態］
以上、本開示の実施形態について説明したが、本開示は、上記実施形態に限定されることなく、種々の形態を採り得ることは言うまでもない。 [3. Other Embodiments]
As mentioned above, although embodiment of this indication was described, it cannot be overemphasized that this indication can take various forms, without being limited to the above-mentioned embodiment.

（３ａ）上記実施形態の導電部材１において、バネ部３は、ボックス部２の第２側壁２Ｂの端部からではなく、当接側面２１を含む第１側壁２Ａの端部から延伸したものであってもよい。   (3a) In the conductive member 1 of the above-described embodiment, the spring portion 3 is not extended from the end portion of the second side wall 2B of the box portion 2, but extended from the end portion of the first side wall 2A including the contact side surface 21. There may be.

（３ｂ）また、バネ部３は、第１方向の力が湾曲部３２に加わった際に、ボックス部２の内部にその先端が存在し、かつ第２方向の力が湾曲部３２に加わった際に、ボックス部２の第１側壁２Ａの内面に押圧される押圧部分３６を有せば、上記実施形態の形状に限定されない。例えば、バネ部３は、ボックス部２内を貫通したのち、第１側壁２Ａから第２側壁２Ｂに向かう方向（図４中Ｚ軸上方向）に延伸しつつ湾曲し、再度ボックス部２内に進入してもよい。さらに、例えば、湾曲部３２は、第１面Ｐ及び第２面Ｑの少なくとも一方と交差するような仮想線を囲むように湾曲していてもよい。   (3b) Further, when the force in the first direction is applied to the bending portion 32, the spring portion 3 has its tip inside the box portion 2 and the force in the second direction is applied to the bending portion 32. In the meantime, if the pressing portion 36 is pressed against the inner surface of the first side wall 2 </ b> A of the box portion 2, the shape is not limited to the shape of the above embodiment. For example, after passing through the box portion 2, the spring portion 3 is curved while extending in the direction from the first side wall 2 </ b> A toward the second side wall 2 </ b> B (upward in the Z axis in FIG. 4), and again into the box portion 2. You may enter. Further, for example, the curved portion 32 may be curved so as to surround an imaginary line that intersects at least one of the first surface P and the second surface Q.

（３ｃ）上記実施形態の導電部材１において、バネ部３の押圧部分３６は、湾曲部３２に設けられなくてもよい。つまり、押圧部分３６は、湾曲部３２以外の部分、例えば先端部３３に設けられてもよい。また、複数の押圧部分３６がバネ部３に形成されてもよい。   (3c) In the conductive member 1 of the above embodiment, the pressing portion 36 of the spring portion 3 may not be provided on the bending portion 32. That is, the pressing portion 36 may be provided in a portion other than the bending portion 32, for example, the distal end portion 33. A plurality of pressing portions 36 may be formed on the spring portion 3.

（３ｄ）上記実施形態の導電部材１において、脚領域２３は必須ではなく、省略が可能である。また、脚領域２３を形成するスリット２４は、第１側壁２Ａのみに形成されてもよく、第３側壁２Ｃ，２Ｄには延伸していなくてもよい。   (3d) In the conductive member 1 of the above embodiment, the leg region 23 is not essential and can be omitted. Further, the slits 24 forming the leg regions 23 may be formed only on the first side wall 2A, and may not extend to the third side walls 2C and 2D.

（３ｅ）上記実施形態の導電部材１において、ボックス部２は、第１面Ｐに当接する第１側壁２Ａを有してさえいれば、四角筒状に限定されず、五角以上の多角筒状であってもよい。   (3e) In the conductive member 1 of the above-described embodiment, the box portion 2 is not limited to a rectangular tube shape as long as it has the first side wall 2A that comes into contact with the first surface P. It may be.

（３ｆ）上記実施形態の導電部材１において、第１面Ｐと第２面Ｑとは必ずしも直交している必要はなく、これらの面は９０°未満の角度で交わっていてもよい。つまり、導電部材１が導通する板金は、プリント配線板の実装面に対し傾斜して配置されてもよい。   (3f) In the conductive member 1 of the above embodiment, the first surface P and the second surface Q are not necessarily orthogonal to each other, and these surfaces may intersect at an angle of less than 90 °. That is, the sheet metal through which the conductive member 1 conducts may be arranged to be inclined with respect to the mounting surface of the printed wiring board.

（３ｇ）上記実施形態における１つの構成要素が有する機能を複数の構成要素として分散させたり、複数の構成要素が有する機能を１つの構成要素に統合したりしてもよい。また、上記実施形態の構成の一部を省略してもよい。また、上記実施形態の構成の少なくとも一部を、他の上記実施形態の構成に対して付加、置換等してもよい。なお、特許請求の範囲に記載の文言から特定される技術思想に含まれるあらゆる態様が本開示の実施形態である。   (3g) The functions of one component in the above embodiment may be distributed as a plurality of components, or the functions of a plurality of components may be integrated into one component. Moreover, you may abbreviate | omit a part of structure of the said embodiment. In addition, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other embodiment. In addition, all the aspects included in the technical idea specified from the wording described in the claims are embodiments of the present disclosure.

１…導電部材、２…ボックス部、２Ａ…第１側壁、２Ｂ…第２側壁、
２Ｃ，２Ｄ…第３側壁、３…バネ部、１０…板金、２１…当接側面、
２２…半田付け領域、２３…脚領域、２４…スリット、２５…開口、３１…緩衝部、
３１Ａ…第１部分、３１Ｂ…第２部分、３１Ｃ…第３部分、３１Ｄ…第４部分、
３２…湾曲部、３３…先端部、３３Ａ…第１部分、３３Ｂ…第２部分、３４…羽部、
３５…凸部、３６…押圧部分、３７…係合部、Ｐ…第１面（実装面）、
Ｑ…第２面（板金の表面）。 DESCRIPTION OF SYMBOLS 1 ... Conductive member, 2 ... Box part, 2A ... 1st side wall, 2B ... 2nd side wall,
2C, 2D ... 3rd side wall, 3 ... Spring part, 10 ... Sheet metal, 21 ... Contact side surface,
22 ... Soldering area, 23 ... Leg area, 24 ... Slit, 25 ... Opening, 31 ... Buffer part,
31A ... 1st part, 31B ... 2nd part, 31C ... 3rd part, 31D ... 4th part,
32 ... curved portion, 33 ... tip portion, 33A ... first portion, 33B ... second portion, 34 ... wing portion,
35 ... convex part, 36 ... pressing part, 37 ... engaging part, P ... 1st surface (mounting surface),
Q ... 2nd surface (surface of sheet metal).

Claims (4)

互いに交差する方向に延びる第１面と第２面とを導通する金属製の導電部材であって、
前記第１面と側面が当接する筒状のボックス部と、
前記ボックス部の前記第１面と当接する側面を含む第１側壁、又は前記第１側壁と対向する第２側壁の端部から、この端部を基端として延伸する板状のバネ部と
を備え、
前記バネ部は、前記第２面から離れる方向の力を弾性変形により緩衝する緩衝部と、前記緩衝部よりもバネ部の先端側に設けられた湾曲部とを有し、
前記湾曲部は、前記ボックス部の一方の開口から前記第２面に向かって突出すると共に、前記開口からの突出方向に凸となるよう湾曲しており、
前記バネ部は、前記第２面と平行かつ前記第１面から離れる方向の力が前記湾曲部に加わった際に、前記ボックス部の内部にその先端が存在し、かつ前記第２面と平行かつ前記第１面に向かう方向の力が前記湾曲部に加わった際に、前記ボックス部の前記第１側壁の内面に押圧される、導電部材。 A metal conductive member that conducts between a first surface and a second surface extending in directions intersecting each other;
A cylindrical box portion in which the first surface and the side surface abut,
A plate-like spring portion extending from the end of the first side wall including the side surface contacting the first surface of the box portion or the second side wall facing the first side wall with the end as a base end. Prepared,
The spring portion includes a buffer portion that cushions a force in a direction away from the second surface by elastic deformation, and a curved portion provided on a distal end side of the spring portion from the buffer portion,
The curved portion protrudes from the one opening of the box portion toward the second surface and is curved so as to protrude in the protruding direction from the opening,
The tip of the spring part is present inside the box part and parallel to the second surface when a force in a direction parallel to the second surface and away from the first surface is applied to the curved part. And when the force of the direction which goes to the said 1st surface is added to the said curved part, the electrically-conductive member pressed against the inner surface of the said 1st side wall of the said box part. 請求項１に記載の導電部材であって、
前記第１側壁の前記第１面と当接する側面は、前記ボックス部の中心軸方向において、複数の領域に分割されている、導電部材。 The conductive member according to claim 1,
A conductive member, wherein a side surface of the first side wall that is in contact with the first surface is divided into a plurality of regions in the central axis direction of the box portion. 請求項１又は請求項２に記載の導電部材であって、
前記湾曲部は、前記第１面及び前記第２面の双方と平行な仮想線を囲むように湾曲しており、
前記バネ部に力が加わっていない状態で前記ボックス部の開口から突出している部分において、前記湾曲部の湾曲の中心から前記バネ部の先端に向かう側の平均曲率半径は、湾曲の中心から前記緩衝部に向かう側の平均曲率半径よりも小さい、導電部材。 The conductive member according to claim 1 or 2, wherein
The curved portion is curved so as to surround an imaginary line parallel to both the first surface and the second surface,
In the portion protruding from the opening of the box portion in a state where no force is applied to the spring portion, the average radius of curvature on the side from the center of bending of the bending portion toward the tip of the spring portion is A conductive member that is smaller than the average radius of curvature on the side toward the buffer portion. 請求項１から請求項３までのいずれか１項に記載の導電部材と、
プリント配線板と、
前記プリント配線板に前記プリント配線板の実装面と垂直となる向きに配設される板金と
を備え、
前記導電部材は、前記プリント配線板の実装面に前記第１側壁が半田付けされると共に、前記板金の表面に前記湾曲部が当接する、グランド対策構造。 The conductive member according to any one of claims 1 to 3,
A printed wiring board;
A sheet metal disposed on the printed wiring board in a direction perpendicular to the mounting surface of the printed wiring board;
The conductive member has a ground countermeasure structure in which the first side wall is soldered to a mounting surface of the printed wiring board, and the curved portion is in contact with the surface of the sheet metal.
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JPH1168301A (en) * 1997-08-25 1999-03-09 Nec Corp Mounting method for chip component and chip component used for the method
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