JP5574471B2

JP5574471B2 - PCB mounting structure

Info

Publication number: JP5574471B2
Application number: JP2009141435A
Authority: JP
Inventors: 洋平松川; 豪一塚本; 昌秀永田
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2009-06-12
Filing date: 2009-06-12
Publication date: 2014-08-20
Anticipated expiration: 2029-06-12
Also published as: JP2010287790A

Description

本発明は、プリント基板の取り付け構造に関し、特に、車両、船舶等の移動体に搭載される計器ケースに収容された計器ユニット等と電気的に接続するプリント基板を計器ケースに取り付けるための取り付け構造に関する。 TECHNICAL FIELD The present invention relates to a printed circuit board mounting structure, and in particular, a mounting structure for mounting a printed circuit board electrically connected to a meter unit or the like housed in a meter case mounted on a moving body such as a vehicle or a ship to the meter case. About.

車両、船舶などの移動体には、各種の計測手段が計測した複数の情報を移動体の乗員に対して表示する計器装置が搭載されている。この種の計器装置として、例えば、移動体としての車両の速度を表示する表示計器としてのスピードメータと、エンジンの回転数を表示する表示計器としてのタコメータと、燃料の残量を表示する表示計器としてのフューエルゲージと、エンジンの冷却水の温度を表示する表示計器としてのテンパラチャゲージなどを備えた車両用コンビネーションメータが用いられる。
車両用コンビネーションメータの各メータ及びゲージは、それぞれ、計器ユニットとしてのムーブメントと、文字板と、指針と、文字板の裏面側に配される導光板等を備えている。それぞれのムーブメントは、計測量に応じて回転する出力軸を備えている。指針は、それぞれのムーブメントの出力軸に取り付けられている。
また、車両用コンビネーションメータは、ムーブメント等を収容する合成樹脂等からなる箱状の計器ケースと、この計器ケース内に取り付けられて電子部品等が実装されるプリント基板を備えている。 A moving body such as a vehicle or a ship is equipped with an instrument device that displays a plurality of information measured by various measuring means to passengers of the moving body. As this type of instrument device, for example, a speedometer as a display instrument that displays the speed of a vehicle as a moving body, a tachometer as a display instrument that displays the engine speed, and a display instrument that displays the remaining amount of fuel A vehicle combination meter equipped with a fuel gauge and a temperature gauge as a display gauge for displaying the temperature of engine coolant is used.
Each meter and gauge of the vehicle combination meter includes a movement as an instrument unit, a dial, a pointer, a light guide plate disposed on the back side of the dial, and the like. Each movement is provided with an output shaft that rotates in accordance with the measurement amount. The pointer is attached to the output shaft of each movement.
Further, the vehicle combination meter includes a box-shaped instrument case made of synthetic resin or the like that accommodates a movement or the like, and a printed circuit board that is mounted in the instrument case and on which electronic components and the like are mounted.

計器ケースにはプリント基板の取り付け構造として、従来から種々の取り付け構造が提案されている。そのうちの１つに、例えば、特許文献１に記載のような図１０に示すプリント基板の取り付け構造がある。図１０において、プリント基板３００はここでは長方形の３辺と他の１辺（長辺）に台形の底辺が結合した形状をしている。プリント基板３００には複数箇所に貫通孔が形成されており、これらの貫通孔を用いてプリント基板３００の表面に各種の電子部品等が実装される。ここではプリント基板３００の説明をするため、描くと判りにくくなるので各種の電子部品等は図示を省略している。 Conventionally, various attachment structures have been proposed as a printed circuit board attachment structure for an instrument case. One of them is, for example, a printed circuit board mounting structure shown in FIG. In FIG. 10, the printed circuit board 300 has a shape in which a trapezoid base is combined with three sides of a rectangle and another side (long side). The printed circuit board 300 has through holes formed at a plurality of locations, and various electronic components are mounted on the surface of the printed circuit board 300 using these through holes. Here, in order to describe the printed circuit board 300, it is difficult to understand when drawn, and therefore various electronic components and the like are not shown.

プリント基板３００を収容して保持する計器ケース２００は、底部とこの底部の外周縁から立設する周壁とを有しており、かつ周壁の反底部側に開口が設けられ、この開口は通常、裏カバー（図示なし）で閉塞されている。 The instrument case 200 that accommodates and holds the printed circuit board 300 has a bottom portion and a peripheral wall standing from the outer peripheral edge of the bottom portion, and an opening is provided on the opposite bottom side of the peripheral wall. It is closed with a back cover (not shown).

計器ケース２００には、底部から開口に向かって複数の位置決め突起２００Ｍ１、２００Ｍ２、２００Ｍ３と複数の係止爪２００Ｎが突設されている。複数の位置決め突起２００Ｍ１、２００Ｍ２、２００Ｍ３は、それぞれ、プリント基板３００に形成された各貫通孔３００Ｍ１、３００Ｍ２、３００Ｍ３に挿入されて、貫通孔３００Ｍ１、３００Ｍ２、３００Ｍ３の周縁に当接してプリント基板３００をＸ−Ｙ方向に移動することを阻止している。また、複数の係止爪２００Ｎは、それぞれ、プリント基板３００の外縁部に係合して互いの間に挟んでプリント基板３００を支持しＺ方向（垂直方向）の移動を阻止している。 The instrument case 200 is provided with a plurality of positioning projections 200M1, 200M2, and 200M3 and a plurality of locking claws 200N projecting from the bottom toward the opening. The plurality of positioning protrusions 200M1, 200M2, and 200M3 are inserted into the through holes 300M1, 300M2, and 300M3 formed in the printed circuit board 300, respectively, and come into contact with the peripheral edges of the through holes 300M1, 300M2, and 300M3 so that the printed circuit board 300 is brought into contact therewith. The movement in the XY direction is prevented. Each of the plurality of locking claws 200N engages with the outer edge portion of the printed circuit board 300 and sandwiches them to support the printed circuit board 300 to prevent movement in the Z direction (vertical direction).

図１１には、計器ケース２００の底部から立設された位置決め突起２００Ｍが、プリント基板３００の貫通孔３００Ｍを貫通している状態が示されている。また、計器ケース２００の底部から立設された係止爪２００Ｎが、プリント基板３００の外縁部３００Ｎに係止している状態が示されている。
このように、特許文献１記載のプリント基板３００は外縁部３００Ｎに計器ケース２００の係止爪２００Ｎが係止することで垂直方向（Ｚ方向）の固定がなされ、プリント基板３００の貫通孔３００Ｍに計器ケース２００の位置決め突起２００Ｍが貫通することで縦・横方向（Ｘ−Ｙ方向）の固定（位置決め）が行われる。 FIG. 11 shows a state in which the positioning projection 200 M standing from the bottom of the instrument case 200 passes through the through hole 300 M of the printed circuit board 300. Further, a state in which a locking claw 200N standing from the bottom of the instrument case 200 is locked to the outer edge portion 300N of the printed circuit board 300 is shown.
As described above, the printed circuit board 300 described in Patent Document 1 is fixed in the vertical direction (Z direction) by the locking claw 200N of the instrument case 200 being locked to the outer edge portion 300N, and is fixed to the through hole 300M of the printed circuit board 300. By fixing the positioning projection 200M of the instrument case 200, fixing (positioning) in the vertical and horizontal directions (XY directions) is performed.

特開２００８−１５１７４２号公報JP 2008-151742 A

このように特許文献１記載のプリント基板３００はＺ方向固定用の係止爪２００Ｎを備える他に、Ｘ−Ｙ方向固定用の位置決め突起２００Ｍを備えることとなるので、計器ケース２００には位置決め突起２００Ｍも必要となり、しかもプリント基板３００の各種の電子部品等を取り付けるべき部位に形成されるので、これらの構造物との干渉を避けるために電子部品等の実装面積が減少してしまう問題があった。
また、Ｚ方向固定用の係止爪２００Ｎはプリント基板３００の位置決め突起２００Ｍ３のある側のＺ方向の移動を阻止することに寄与しているとは言えず、完璧な位置決めとはなっていなかった。 Thus, since the printed circuit board 300 described in Patent Document 1 includes the locking claw 200N for fixing in the Z direction and the positioning protrusion 200M for fixing in the XY direction, the positioning protrusion on the instrument case 200 is provided. 200M is also required, and the printed circuit board 300 is formed at a portion where various electronic components are to be mounted. Therefore, there is a problem that the mounting area of the electronic components is reduced in order to avoid interference with these structures. It was.
Further, the locking claw 200N for fixing in the Z direction cannot be said to contribute to preventing the movement in the Z direction on the side where the positioning projection 200M3 of the printed circuit board 300 is located, and is not perfect positioning. .

本発明はこれらの欠点を解決するためになされたもので、Ｘ−Ｙ方向固定のためにわざわざ位置決め突起２００Ｍを構造物との干渉が起き易い位置に設ける必要のない、しかもＸ−Ｙ−Ｚ方向に完璧な位置決めができるプリント基板の取り付け構造を提供することを目的としている。 The present invention has been made to solve these drawbacks, and it is not necessary to provide the positioning projection 200M at a position where interference with the structure is likely to occur in order to fix the X-Y direction. An object of the present invention is to provide a printed circuit board mounting structure capable of perfect positioning in a direction.

前記課題を解決し目的を達成するために、プリント基板の取り付け構造の第１発明は、四辺を周壁で囲われてかつ開口を有する樹脂製の箱状ケースと、前記箱状ケースの開口を覆うプリント基板と、前記箱状ケースの底部から一辺の周壁の外側近傍に立設されたＺ方向位置決め部材とＹ方向位置決め部材と前記一辺の周壁と直角な方向の周壁に設けられたＸ方向位置決め部材とを備えて成る前記プリント基板用の位置決め部材と、から成り、
前記プリント基板がまずＺ方向の上から下に向けて降下されて前記箱状ケースの前記周壁の上に接触した後、前記Ｘ方向に沿っておよび前記Ｙ方向に沿って所定距離だけスライドさせることにより完全固定されるプリント基板の取り付け構造であって、
前記Ｚ方向位置決め部材は、内側に向く係止突起を頂部に有し、
前記Ｙ方向位置決め部材は、弾性支柱を有しかつテーパ付き係止突起が内側に向く当該係止突起を頂部に有し、
前記Ｘ方向位置決め部材は、内側に向くとともにＹ方向に長い長尺状係止突起を頂部に有し、
前記プリント基板は、前記箱状ケースに固定された状態で、
（ａ）各前記Ｚ方向位置決め部材の位置より前記Ｙ方向に前記所定距離だけ離れた部位に前記Ｚ方向位置決め部材の前記係止突起を貫通させる大きさの切り欠きと、
（ｂ）前記Ｙ方向位置決め部材の前記テーパ付き係止突起と係止している切り欠きと、
（ｃ）前記Ｘ方向位置決め部材の前記長尺状係止突起と係止する、Ｙ方向に長い長尺状切り欠きと、を備えることにより、
前記長尺状係止突起が前記長尺状切り欠きに係止して前記プリント基板のＸ方向の位置決めがなされたあと、前記長尺状係止突起が前記長尺状切り欠きに完全に係止するＹ方向に前記プリント基板をスライドさせることで、前記Ｙ方向位置決め部材の前記テーパ付き係止突起がその樹脂材料の弾性特性によって撓んで前記プリント基板の縁部によって外側に押されたそれまでの状態から、前記テーパ付き係止突起と対応する切り欠きに係止するようになって前記プリント基板のＹ方向の位置決めがなされることを特徴としている。
ただし、Ｚ方向は、前記プリント基板が、前記箱状ケースに固定された状態で、プリント基板の実装面に垂直な方向、
Ｙ方向は、前記一辺の周壁に沿うとともにＺ方向に垂直な方向、
Ｘ方向は、Ｚ方向に垂直であるとともにＹ方向に垂直な方向
である。 In order to solve the above problems and achieve the object, a first invention of a printed circuit board mounting structure covers a resin-made box-like case having four sides surrounded by a peripheral wall and an opening, and the opening of the box-like case and the printed circuit board, provided in the peripheral wall perpendicular to the direction of the peripheral wall of the outer Z side erected near direction position-decided Me member and Y direction-position-decided Me member and the one side of the peripheral wall of the one side from the bottom of the box-shaped casing a positioning member for the printed circuit board comprising a X direction-position-decided Me member which is made of,
Wherein the printed circuit board is first on the Z-direction is lowered toward the lower after contact on the peripheral wall of the box-like case, be by sliding a predetermined distance along with and the Y-direction along the X-direction A printed circuit board mounting structure that is completely fixed by
The Z-direction positioning member has a locking projection facing inward at the top,
The Y-direction positioning member has an elastic support and has a locking projection at the top with a tapered locking projection facing inward,
The X-direction positioning member has a long locking projection at the top that faces inward and that is long in the Y-direction ,
The printed circuit board is fixed to the box-shaped case,
(A) and the Y direction to the predetermined distance large enough to penetrate the locking projection of the Z-direction positioning member to distant sites of the cutout from the position of each of said Z-direction positioning member,
(B) a notch that is locked to the tapered locking protrusion of the Y-direction positioning member;
(C) to the elongated locking projection and the locking of the X-direction positioning member, and lacks long elongated cutting in the Y direction, by providing,
After the long locking protrusion is locked to the long cutout and the printed circuit board is positioned in the X direction, the long locking protrusion is completely engaged with the long cutout. By sliding the printed circuit board in the Y direction to stop, until the tapered locking projection of the Y direction positioning member is bent by the elastic characteristics of the resin material and pushed outward by the edge of the printed circuit board From this state, the printed board is positioned in the Y direction by engaging with the notch corresponding to the tapered locking protrusion .
However, the Z direction is a direction perpendicular to the mounting surface of the printed circuit board in a state where the printed circuit board is fixed to the box-shaped case,
The Y direction is a direction along the peripheral wall of the one side and perpendicular to the Z direction,
X direction is perpendicular to Z direction and perpendicular to Y direction
It is.

第２発明は、前記第１発明において、前記Ｚ方向位置決め部材が前記一辺の周壁の外側近傍に複数箇所で立設されたことを特徴としている。 A second invention is characterized in that, in the first invention, the Z-direction positioning member is erected at a plurality of locations in the vicinity of the outside of the peripheral wall of the one side .

第３発明は、前記第１又は第２発明において、前記Ｚ方向位置決め部材が前記一辺の周壁と対向する周壁の外側近傍に立設されたことを特徴としている。 A third invention is characterized in that, in the first or second invention, the Z-direction positioning member is erected in the vicinity of the outer side of the peripheral wall facing the peripheral wall of the one side .

第４発明は、前記第１発明において、前記Ｙ方向位置決め部材が前記一辺の周壁と対向する周壁の外側近傍に立設されたことを特徴としている。 According to a fourth invention, in the first invention, the Y-direction positioning member is erected in the vicinity of the outer side of the peripheral wall facing the peripheral wall of the one side .

第５発明は、前記第１発明において、前記Ｘ方向位置決め部材が前記周壁の略中央部に立設されたことを特徴としている。 A fifth invention is characterized in that, in the first invention, the X-direction positioning member is erected at a substantially central portion of the peripheral wall.

第６発明は、前記第１発明において、Ｚ方向から真下に向けて降下される前記プリント基板を受け止めて前記箱状ケースの周壁に沿ってスライドさせるスライド面を備えたスライド部材をそのスライド面が前記箱状ケースの周壁の上部と同一平面上になるように設けたことを特徴としている。 According to a sixth aspect of the present invention, in the first aspect of the present invention, the slide surface includes a slide member that includes a slide surface that receives the printed circuit board that is lowered downward from the Z direction and slides it along the peripheral wall of the box-shaped case. It is characterized by being provided so as to be flush with the upper part of the peripheral wall of the box-like case.

以上説明したように、第１発明によれば、Ｘ−Ｙ−Ｚの各方向の位置決め部材は計器ケースの外周に設けられかつそれらと係合するプリント基板の切り欠きがそれぞれの位置決め部材の動作にあった位置および形状に形成されていることにより、特許文献１記載のようなＸ−Ｙ方向固定のためにわざわざ位置決め突起を構造物との干渉が起き易い位置に設けなくてもＸ−Ｙ−Ｚ方向に完璧な位置決めができるようになる。 As described above, according to the first invention, the positioning members in the X, Y, and Z directions are provided on the outer periphery of the instrument case, and the cutouts of the printed circuit board that engage with the positioning members operate the positioning members. Therefore, the positioning projection is not provided at a position where interference with the structure is likely to occur in order to fix the X-Y direction as described in Patent Document 1. -Perfect positioning in the Z direction is possible.

また、第２発明によれば、Ｚ方向位置決め部材を一辺の周壁の外側近傍に複数箇所設けたので、Ｚ方向の位置決めがより完璧となる。 Further, according to the second aspect, since the Z direction positioning member is provided at a plurality of positions near the outside of the peripheral wall of one side , the positioning in the Z direction becomes more perfect.

また、第３発明によれば、Ｚ方向位置決め部材を一辺の周壁と対向する周壁の外側近傍にも設けたので、全体のＺ方向の位置決めがより完璧となる。 Further, according to the third aspect of the invention, since the Z direction positioning member is also provided in the vicinity of the outer side of the peripheral wall facing the peripheral wall of one side , the entire positioning in the Z direction becomes more perfect.

また、第４発明によれば、Ｙ方向位置決め部材を一辺の周壁と対向する周壁の外側近傍にも設けたので、全体のＹ方向の位置決めがより完璧となる。
According to the fourth aspect of the invention, since the Y-direction positioning member is also provided in the vicinity of the outer side of the peripheral wall facing the peripheral wall on one side , the entire positioning in the Y direction becomes more perfect.

また、第５発明によれば、Ｘ方向位置決め部材を周壁の略中央部に設けたので、Ｘ方向の位置決めが安定する。 Further, according to the fifth aspect, since the X direction positioning member is provided at the substantially central portion of the peripheral wall, the positioning in the X direction is stable.

また、第６発明によれば、箱状ケースの周壁に沿ってスライドさせるスライド面を備えたスライド部材をそのスライド面が箱状ケースの周壁の上部と同一平面上になるように設けたので、プリント基板のＸ−Ｙ方向のスライドがスムーズに行えるようになる。 Further, according to the sixth invention, the slide member provided with the slide surface that is slid along the peripheral wall of the box-shaped case is provided so that the slide surface is flush with the upper portion of the peripheral wall of the box-shaped case. The printed board can be smoothly slid in the XY directions.

図１は本発明に係る計器ケースを示す斜視図で、プリント基板を取り付ける前の計器ケースだけを示した斜視図である。FIG. 1 is a perspective view showing an instrument case according to the present invention, and is a perspective view showing only an instrument case before a printed circuit board is attached. 図２は本発明に係るプリント基板を本発明に係る計器ケースの取り付け位置の真上まで運んだ状態の斜視図である。FIG. 2 is a perspective view of a state in which the printed circuit board according to the present invention is carried to a position just above the mounting position of the instrument case according to the present invention. 図３は図１のプリント基板の切り欠き３０Ｚ１〜３０Ｚ４をＺ方向位置決め部材２０Ｚ１〜２０Ｚ４のそれぞれに計器ケース１０の真上で合わせた状態の斜視図である。FIG. 3 is a perspective view showing a state in which the notches 30Z1 to 30Z4 of the printed circuit board of FIG. 1 are aligned with the Z direction positioning members 20Z1 to 20Z4 directly above the instrument case 10, respectively. 図４は図３のプリント基板をＺ方向位置決め部材に沿って下ろして計器ケースの上へ載置した状態の斜視図である。FIG. 4 is a perspective view of a state in which the printed circuit board of FIG. 3 is lowered along the Z-direction positioning member and placed on the instrument case. 図５は計器ケースとプリント基板とのＺ方向の位置決めが完了した状態を示す斜視図である。FIG. 5 is a perspective view showing a state where the positioning of the instrument case and the printed circuit board in the Z direction is completed. 図６はＹ方向位置決め部材の動作前後の状態を示している拡大斜視図で、（１）は位置決め前、（２）は位置決め動作中、（３）は位置決め完了の各状態を示している。FIG. 6 is an enlarged perspective view showing a state before and after the operation of the Y-direction positioning member. (1) is before positioning, (2) is during the positioning operation, and (3) is a state where the positioning is completed. 図７は計器ケースとプリント基板とのＹ方向の位置決めが完了した状態を示す斜視図である。FIG. 7 is a perspective view showing a state where the positioning of the instrument case and the printed board in the Y direction is completed. 図８は図４の状態をＸ方向の位置決め部材が判る角度から描いた斜視図である。FIG. 8 is a perspective view illustrating the state of FIG. 4 from an angle at which the positioning member in the X direction can be seen. 図９は図７の状態をＸ方向の位置決め部材が判る角度から描いた斜視図である。FIG. 9 is a perspective view illustrating the state of FIG. 7 from an angle at which the positioning member in the X direction can be understood. 図１０は特許文献１記載のプリント基板の取り付け構造を示す斜視図である。FIG. 10 is a perspective view showing a printed circuit board mounting structure described in Patent Document 1. FIG. 図１１は、図１０における計器ケースの底部から立設された位置決め突起がプリント基板の貫通孔を貫通している状態を示す斜視図である。FIG. 11 is a perspective view showing a state in which the positioning protrusions erected from the bottom of the instrument case in FIG. 10 pass through the through holes of the printed circuit board.

以下、Ｘ−Ｙ方向固定のためにわざわざ位置決め突起を構造物との干渉が起き易い位置に設ける必要のない、しかもＸ−Ｙ−Ｚ方向に完璧な位置決めができるプリント基板の取り付け構造について図面を用いて説明する。 Hereinafter, there is no need to provide positioning protrusions at positions where interference with the structure is likely to occur in order to fix the X-Y direction, and a drawing for a printed circuit board mounting structure capable of perfect positioning in the X-Y-Z directions will be described. It explains using.

図１は本発明に係る計器ケースを示す斜視図で、プリント基板を取り付ける前の計器ケースだけを示した斜視図である。図１において、１０がムーブメント等の計器類を収容する合成樹脂等からなる箱状の計器ケースである。計器ケース１０は内部に種々の計器類を収容する種々の形状の大きな穴が複数箇所にあけられており、この各穴にそれぞれの計器類が文字盤を下側に向けて嵌（は）められて、固定され、さらに、計器類に配線をするためのプリント基板３０（図２）がこの計器ケース１０上に取り付けられる。
プリント基板３０を取り付けるための取り付け構造は、箱状の計器ケース１０の周壁の外側近傍に符号２０で示される取り付け部材（スライド部材２０Ｓ１〜２０Ｓ１０、Ｘ方向位置決め部材２０Ｘ（図８）、Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２、Ｚ方向位置決め部材２０Ｚ１〜２０Ｚ４）の集合体で構成されている。 FIG. 1 is a perspective view showing an instrument case according to the present invention, and is a perspective view showing only an instrument case before a printed circuit board is attached. In FIG. 1, reference numeral 10 denotes a box-shaped instrument case made of synthetic resin or the like that accommodates instruments such as movements. The instrument case 10 has a large number of holes with various shapes inside to accommodate various instruments, and each instrument is fitted into each hole with the dial facing downward. The printed circuit board 30 (FIG. 2) for wiring to the instruments is mounted on the instrument case 10.
The mounting structure for mounting the printed circuit board 30 includes mounting members (sliding members 20S1 to 20S10, an X-direction positioning member 20X (FIG. 8), and a Y-direction positioning shown near the outside of the peripheral wall of the box-shaped instrument case 10. It is comprised by the aggregate | assembly of member 20Y1-20Y2 and the Z direction positioning member 20Z1-20Z4).

《Ｘ方向位置決め部材２０Ｘの形状》
Ｘ方向位置決め部材２０Ｘは図８に示すように、計器ケース１０のスライド方向（図で右上から左下方向。すなわち計器ケース１０の１側壁の延びる方向）の先端側辺の底部から上方へ立設した立設部２０Ｘｈの頂部に計器ケース１０の内側に向く長い長尺状係止突起である。 << Shape of X direction positioning member 20X >>
As shown in FIG. 8, the X-direction positioning member 20X is erected upward from the bottom of the tip side in the sliding direction of the instrument case 10 (from the upper right to the lower left in the figure, ie, the direction in which one side wall of the instrument case 10 extends). It is a long elongate latching protrusion which faces the inner side of the instrument case 10 in the top part of the standing part 20Xh.

《Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２の形状》
Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２は図１に示すように計器ケース１０の底部から上方へ立設した立設部２０Ｙｈ（図１参照）の頂部から計器ケース１０の内側に向かって形成された爪部（図１の２０Ｙ２参照）で、爪部はスライドの方向に進むにつれて爪の長さが次第に長くなる傾斜面が形成されている。さらに、立設部２０Ｙｈはスライド方向の幅が狭く形成されていて、これにより計器ケース１０から離れる方向に力が爪に加わると立設部２０Ｙｈの樹脂材料の弾性力で爪が計器ケース１０から離れる方向に変位できるようになっている。 << Shapes of Y direction positioning members 20Y1 to 20Y2 >>
As shown in FIG. 1, the Y-direction positioning members 20 Y 1 to 20 Y 2 are claw portions formed from the top of the standing portion 20 Yh (see FIG. 1) standing upward from the bottom of the instrument case 10 toward the inside of the instrument case 10. (See 20Y2 in FIG. 1) In the claw portion, an inclined surface is formed in which the length of the claw gradually increases as it advances in the sliding direction. Further, the standing portion 20Yh is formed to have a narrow width in the sliding direction. When a force is applied to the nail in a direction away from the instrument case 10, the nail is removed from the instrument case 10 by the elastic force of the resin material of the standing portion 20Yh. It can be displaced in the away direction.

《Ｚ方向位置決め部材２０Ｚ１〜２０Ｚ４の形状》
Ｚ方向位置決め部材２０Ｚ１〜２０Ｚ４は図１に示すように計器ケース１０の底部から上方へ立設した立設部２０Ｚｈ（図１参照）の頂部から計器ケース１０の内側に向かう係止突起（図１の２０Ｚ２参照）である。 << Shape of Z direction positioning member 20Z1-20Z4 >>
As shown in FIG. 1, the Z-direction positioning members 20 Z 1 to 20 Z 4 are latching protrusions (FIG. 1) from the top of the standing portion 20 Zh (see FIG. 1) that stands upward from the bottom of the instrument case 10. 20Z2).

〈プリント基板３０の形状〉
図２は本発明に係るプリント基板を本発明に係る計器ケースの取り付け位置の真上へ運んだ状態を示す斜視図である。図２において、本発明に係るプリント基板３０は箱状の計器ケース１０（図１）の上へ取り付けられるため箱状の計器ケース１０と同じような長方形をしており、かつＸ方向位置決め部材２０Ｘ、Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２、Ｚ方向位置決め部材２０Ｚ１〜２０Ｚ４のそれぞれに対応した以下の切り欠き（３０Ｘ、３０Ｙ１〜３０Ｙ２、３０Ｚ１〜３０Ｚ４）を４辺のいずれかに形成している。《Ｚ方向位置決め用の切り欠きの形状》
すなわち、プリント基板を箱状ケースに垂直に挿入後、水平方向に所定距離スライドさせて固定した状態で、Ｚ方向位置決め用の切り欠き３０Ｚ１〜３０Ｚ４は、Ｚ方向位置決め部材２０Ｚ１〜２０Ｚ４の位置よりスライド方向に所定距離だけ離れた部位にＺ方向位置決め部材２０Ｚ１〜２０Ｚ４の係止突起を貫通させる大きさの切り欠きが形成されている。
《Ｙ方向位置決め用の切り欠きの形状》
また、Ｙ方向位置決め用の切り欠き３０Ｙ１〜３０Ｙ２は、Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２の爪と係止している部位にその爪と係止する大きさの切り欠きが形成されている。
《Ｘ方向位置決め用の切り欠きの形状》
そして、Ｘ方向位置決め用の切り欠き３０Ｘは、Ｘ方向位置決め部材２０Ｘの長尺状係止突起と係止する長さの切り欠きとともに前記所定距離だけさらに延設する切り欠きが形成されている。 <Shape of the printed circuit board 30>
FIG. 2 is a perspective view showing a state in which the printed board according to the present invention is carried right above the mounting position of the instrument case according to the present invention. In FIG. 2, since the printed circuit board 30 according to the present invention is mounted on the box-shaped instrument case 10 (FIG. 1), it has a rectangular shape similar to that of the box-shaped instrument case 10, and the X-direction positioning member 20X. The following notches (30X, 30Y1 to 30Y2, 30Z1 to 30Z4) corresponding to the Y direction positioning members 20Y1 to 20Y2 and the Z direction positioning members 20Z1 to 20Z4 are formed on any of the four sides. 《Notch shape for positioning in Z direction》
That is, the Z-direction positioning notches 30Z1 to 30Z4 are slid from the positions of the Z-direction positioning members 20Z1 to 20Z4 in a state where the printed circuit board is inserted vertically into the box-shaped case and then fixed by sliding a predetermined distance in the horizontal direction. A notch having a size that allows the locking projections of the Z-direction positioning members 20Z1 to 20Z4 to pass therethrough is formed at a position that is a predetermined distance away in the direction.
<< Notch shape for positioning in Y direction >>
Further, the Y-direction positioning cutouts 30Y1 to 30Y2 are formed with cutouts of a size to be locked with the claws of the Y-direction positioning members 20Y1 to 20Y2.
<< Cut shape for positioning in X direction >>
The X-direction positioning cutout 30X is formed with a cutout that extends further by the predetermined distance together with a cutout of a length that engages with the elongated locking projection of the X-direction positioning member 20X.

〈Ｚ方向の位置決め〉
本発明のプリント基板の取り付け構造において、計器ケース１０とプリント基板３０とのＺ方向の位置決めは次のようにして行われる。 <Positioning in Z direction>
In the printed circuit board mounting structure of the present invention, positioning of the instrument case 10 and the printed circuit board 30 in the Z direction is performed as follows.

《まず、位置合わせ》
図３において、まず、プリント基板３０の各切り欠き３０Ｚ１〜３０Ｚ４を計器ケース１０の外周にある取り付け構造２０のＺ方向位置決め部材２０Ｚ１〜２０Ｚ４のそれぞれに計器ケース１０の真上で合わせる。 <First, alignment>
In FIG. 3, first, the notches 30 Z 1 to 30 Z 4 of the printed circuit board 30 are aligned with the Z-direction positioning members 20 Z 1 to 20 Z 4 of the mounting structure 20 on the outer periphery of the instrument case 10.

《次いで、下降移動》
図４は図３のプリント基板３０のＺ方向位置決め用切り欠き３０Ｚ１〜３０Ｚ４が計器ケース１０の外周にある取り付け構造２０のＺ方向位置決め部材２０Ｚ１〜２０Ｚ４と位置合わせされた状態からプリント基板３０を真下に下ろして計器ケース１０の上へ載置した状態の斜視図である。
図４において、プリント基板３０のＺ方向位置決め用切り欠き３０Ｚ１〜３０Ｚ４が計器ケース１０のＺ方向位置決め部材２０Ｚ１〜２０Ｚ４の凸部に嵌（は）められた状態で、そのまま凸部に沿って下方に移動し、計器ケース１０の周壁の頂部と同一面にある取り付け構造２０のスライド部材２０Ｓ１〜２０Ｓ１０（図１）にプリント基板３０の裏面が当接して降下移動が終了する。
この状態ではプリント基板３０のＺ方向位置決め用切り欠き３０Ｚ１〜３０Ｚ４がＺ方向位置決め部材２０Ｚ１〜２０Ｚ４の係止突起の真下にあるので、まだ上へ（Ｚ方向へ）戻る可能性がある。 Next, move down
FIG. 4 shows the printed circuit board 30 in a state where the Z-directional positioning notches 30Z1 to 30Z4 of the printed circuit board 30 of FIG. 3 are aligned with the Z-directional positioning members 20Z1 to 20Z4 of the mounting structure 20 on the outer periphery of the instrument case 10. It is a perspective view of the state where it lowered to and placed on the instrument case 10.
In FIG. 4, the Z-direction positioning notches 30Z1 to 30Z4 of the printed circuit board 30 are fitted along the convex portions of the Z-direction positioning members 20Z1 to 20Z4 of the instrument case 10 as they are along the convex portions. The back surface of the printed circuit board 30 comes into contact with the slide members 20S1 to 20S10 (FIG. 1) of the mounting structure 20 on the same surface as the top of the peripheral wall of the instrument case 10, and the descending movement is completed.
In this state, the Z-direction positioning cutouts 30Z1 to 30Z4 of the printed circuit board 30 are directly below the locking projections of the Z-direction positioning members 20Z1 to 20Z4, so that there is a possibility that the printed board 30 may still return upward (in the Z direction).

《そして、若干のスライド》
そこで、この状態からプリント基板３０をスライド部材２０Ｓ１〜２０Ｓ１０の上をＹ方向に若干スライドさせると、図５のようになる。この状態ではプリント基板３０のＺ方向位置決め用切り欠き３０Ｚ１〜３０Ｚ４が計器ケース１０のＺ方向位置決め部材２０Ｚ１〜２０Ｚ４の係止突起から移動しているので、Ｚ方向位置決め部材２０Ｚ１〜２０Ｚ４にはプリント基板３０の縁部（切り欠きのない部分）が位置しているため、プリント基板３０の上方（Ｚ方向）への移動がＺ方向位置決め部材２０Ｚ１〜２０Ｚ４の係止突起に阻止されるのでもうＺ方向へ戻ることはできなくなる（Ｚ方向の位置決め完了）。 << And some slides >>
Therefore, when the printed circuit board 30 is slightly slid in the Y direction on the slide members 20S1 to 20S10 from this state, the result is as shown in FIG. In this state, the Z-direction positioning cutouts 30Z1 to 30Z4 of the printed circuit board 30 are moved from the locking protrusions of the Z-direction positioning members 20Z1 to 20Z4 of the instrument case 10, so that the Z-direction positioning members 20Z1 to 20Z4 include the printed circuit board. Since the edge portion (the portion without the notch) of 30 is located, the upward movement (Z direction) of the printed circuit board 30 is prevented by the locking protrusions of the Z direction positioning members 20Z1 to 20Z4, so that it is already in the Z direction. It is impossible to return to (positioning in the Z direction is complete).

〈Ｙ方向の位置決め〉
図５のように計器ケース１０とプリント基板３０とのＺ方向の位置決めが完了した後、計器ケース１０とプリント基板３０とのＹ方向の位置決めは次のようにして行われる。 <Positioning in Y direction>
After the positioning of the instrument case 10 and the printed board 30 in the Z direction is completed as shown in FIG. 5, the positioning of the instrument case 10 and the printed board 30 in the Y direction is performed as follows.

《まず、Ｙ方向のスライド時のＹ方向位置決め部材２０Ｙ１〜２０Ｙ２の撓み》
図５において計器ケース１０に対してプリント基板３０を若干スライドさせることでＺ方向の位置決めが完了し、このときＹ方向位置決め部材２０Ｙ１〜２０Ｙ２はプリント基板３０の縁部によってケースの外側に押されるようになり、Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２の樹脂材料の弾性特性によって撓み、プリント基板３０の縁部に乗り上げた状態になっている。 << First, deflection of Y direction positioning members 20Y1 to 20Y2 during sliding in Y direction >>
In FIG. 5, the printed circuit board 30 is slightly slid with respect to the instrument case 10 to complete the positioning in the Z direction. At this time, the Y-direction positioning members 20 Y 1 to 20 Y 2 are pushed to the outside of the case by the edge of the printed circuit board 30. Therefore, the Y-direction positioning members 20Y1 to 20Y2 are bent by the elastic characteristics of the resin material and are on the edge of the printed circuit board 30.

《次いで、Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２の復元》
この状態からさらに計器ケース１０に対してプリント基板３０のスライドを続けると、Ｙ方向位置決め部材２０Ｙ１〜２０Ｙ２に対向する面にプリント基板３０のＹ方向位置決め用切り欠き３０Ｙ１〜３０Ｙ２が到来し、この時点でＹ方向位置決め部材２０Ｙ１〜２０Ｙ２の樹脂材料の復元力によってＹ方向位置決め部材２０Ｙ１〜２０Ｙ２はＹ方向位置決め用切り欠き３０Ｙ１〜３０Ｙ２の中に入ってこれと係合し、計器ケース１０とプリント基板３０とのＹ方向の位置決めが完了する。 << Next, restoration of Y direction positioning member 20Y1-20Y2 >>
If the printed circuit board 30 is further slid with respect to the instrument case 10 from this state, the Y-direction positioning cutouts 30Y1 to 30Y2 of the printed circuit board 30 arrive on the surface facing the Y-direction positioning members 20Y1 to 20Y2. The Y-direction positioning members 20Y1 to 20Y2 enter into the Y-direction positioning cutouts 30Y1 to 30Y2 and engage with the Y-direction positioning members 20Y1 to 20Y2 by the restoring force of the resin material of the Y-direction positioning members 20Y1 to 20Y2. Positioning in the Y direction is completed.

《以上のＹ方向位置決め部材２０Ｙ１の３状態の動作説明》
図６はＹ方向位置決め部材２０Ｙ１の動作前後の状態を示している拡大斜視図である。
図６において、（１）は位置決め前、（２）は位置決め動作中、（３）は位置決め完了の各状態を示している。図６（１）は図４のＹ方向位置決め部材２０Ｙ１の状態を示すもので、Ｙ方向位置決め部材２０Ｙ１にまだプリント基板３０が到来していないのでＹ方向位置決め部材２０Ｙ１は撓んで（反って）いない。
図６（２）は図５のＹ方向位置決め部材２０Ｙ１の状態を示すもので、Ｙ方向位置決め部材２０Ｙ１にプリント基板３０が到来して、プリント基板３０の縁部がＹ方向位置決め部材２０Ｙ１を計器ケース２０から離れる方向に押し広げて撓んで（反って）いる。
図６（３）は、プリント基板３０のスライドが進んで、プリント基板３０の縁部がＹ方向位置決め部材２０Ｙ１の部位を通過してプリント基板３０の切り欠き３０Ｙ２が到来したため、Ｙ方向位置決め部材２０Ｙ１が元の状態に復帰し、係合状態となり、計器ケース１０とプリント基板３０とのＹ方向の位置決めが完了する。
図７は以上のようにして計器ケース１０とプリント基板３０とのＹ方向の位置決めが完了した状態を示している。また、Ｘ方向の位置決めは次のように行われることにより、図７においてＸ方向の位置決めも既に完了している。 << Explanation of the three states of the Y-direction positioning member 20Y1 >>
FIG. 6 is an enlarged perspective view showing a state before and after the operation of the Y-direction positioning member 20Y1.
In FIG. 6, (1) shows each state before positioning, (2) during positioning operation, and (3) shows completion of positioning. FIG. 6A shows the state of the Y-direction positioning member 20Y1 in FIG. 4. Since the printed circuit board 30 has not yet arrived at the Y-direction positioning member 20Y1, the Y-direction positioning member 20Y1 is not bent (warped). .
FIG. 6 (2) shows the state of the Y-direction positioning member 20Y1 in FIG. 5. The printed circuit board 30 arrives at the Y-direction positioning member 20Y1, and the edge of the printed circuit board 30 places the Y-direction positioning member 20Y1 in the instrument case. It pushes away in a direction away from 20 and is bent (warped).
FIG. 6 (3) shows that the slide of the printed circuit board 30 advances, the edge of the printed circuit board 30 passes through the portion of the Y direction positioning member 20Y1, and the notch 30Y2 of the printed circuit board 30 arrives. Returns to the original state and is in an engaged state, and the positioning of the instrument case 10 and the printed board 30 in the Y direction is completed.
FIG. 7 shows a state where the positioning of the instrument case 10 and the printed board 30 in the Y direction is completed as described above. Further, the positioning in the X direction is already completed in FIG. 7 by performing the positioning in the X direction as follows.

〈Ｘ方向の位置決め〉
図８は図４の状態をＸ方向の位置決め部材２０Ｘが判る角度から描いた斜視図である。
図８の状態では、プリント基板３０のＸ方向位置決め用切り欠き３０ＸはＸ方向の位置決め部材２０Ｘから離れていてまだ係合していない。
そしてこの状態からプリント基板３０のスライドを続けていくと、やがてＸ方向の位置決め部材２０Ｘはプリント基板３０の縁部に接触する。
そこで接触したら、プリント基板３０の縁部をＸ方向の位置決め部材２０Ｘに押しつけながらプリント基板３０をスライド方向と直角方向（Ｘ方向）に移動させるとやがてＸ方向の位置決め部材２０ＸにＸ方向位置決め用切り欠き３０Ｘが入り込むこととなる。
これによって、計器ケース１０とプリント基板３０とのＸ方向の位置決めが完了する。
このように計器ケース１０とプリント基板３０とのＸ方向の位置決めが行われている状態でも、プリント基板３０をＹ方向にスライドが可能であるから、Ｙ方向へのスライドを続行させていけば、上述したようにＹ方向位置決め部材２０Ｙ１〜２０Ｙ２もプリント基板３０の縁部に乗り上げた後、Ｙ方向位置決め用切り欠き３０Ｙ１〜３０Ｙ２に係合し、計器ケース１０とプリント基板３０とのＹ方向の位置決めが完了する。 <Positioning in X direction>
FIG. 8 is a perspective view depicting the state of FIG. 4 from an angle at which the positioning member 20X in the X direction can be seen.
In the state of FIG. 8, the X-direction positioning cutout 30X of the printed circuit board 30 is separated from the X-direction positioning member 20X and is not yet engaged.
If the slide of the printed circuit board 30 is continued from this state, the positioning member 20X in the X direction eventually comes into contact with the edge of the printed circuit board 30.
Then, if the printed circuit board 30 is moved in a direction perpendicular to the sliding direction (X direction) while pressing the edge of the printed circuit board 30 against the X direction positioning member 20X, the X direction positioning member 20X is eventually cut into the X direction positioning member. The notch 30X will enter.
This completes the positioning of the instrument case 10 and the printed circuit board 30 in the X direction.
Even when the instrument case 10 and the printed circuit board 30 are positioned in the X direction as described above, the printed circuit board 30 can be slid in the Y direction. If the slide in the Y direction is continued, As described above, after the Y-direction positioning members 20Y1 to 20Y2 also ride on the edge of the printed circuit board 30, they are engaged with the Y-direction positioning notches 30Y1 to 30Y2, and the instrument case 10 and the printed circuit board 30 are positioned in the Y direction. Is completed.

〈結論〉
以上のことから判るように、本発明によれば、Ｘ−Ｙ−Ｚの各方向の位置決め部材が計器ケースの外周に設けられかつそれらと係合するプリント基板の切り欠きがそれぞれの位置決め部材の動作にあった位置および形状に形成されていることにより、特許文献１記載のようなＸ−Ｙ方向固定のためにわざわざ位置決め突起を構造物との干渉が起き易い位置に設けなくてもＸ−Ｙ−Ｚ方向に完璧な位置決めができるようになる。 <Conclusion>
As can be seen from the above, according to the present invention, the positioning members in the X, Y, and Z directions are provided on the outer periphery of the instrument case, and the notches of the printed circuit board that engage with them are provided on the positioning members. Since it is formed in the position and shape suitable for the operation, the positioning projection is not provided at the position where the interference with the structure is likely to occur in order to fix the X-Y direction as described in Patent Document 1. Perfect positioning in the Y-Z direction becomes possible.

１０箱状の樹脂製計器ケース
２０取り付け部材
２０Ｓ１〜２０Ｓ１０スライド部材
２０ＸＸ方向位置決め部材
２０Ｙ１〜２０Ｙ２Ｙ方向位置決め部材
２０Ｚ１〜２０Ｚ４Ｚ方向位置決め部材
３０プリント基板
３０ＸＸ方向位置決め用切り欠き
３０Ｙ１〜３０Ｙ２Ｙ方向位置決め用切り欠き
３０Ｚ１〜３０Ｚ４Ｚ方向位置決め用切り欠き DESCRIPTION OF SYMBOLS 10 Box-shaped resin instrument case 20 Mounting member 20S1-20S10 Slide member 20X X direction positioning member 20Y1-20Y2 Y direction positioning member 20Z1-20Z4 Z direction positioning member 30 Printed circuit board 30X X direction positioning notch 30Y1-30Y2 Y direction Notch for positioning 30Z1-30Z4 Notch for positioning in the Z direction

Claims

A resin-made box-like case that is surrounded by a peripheral wall and has an opening, a printed circuit board that covers the opening of the box-like case, and a Z that is erected from the bottom of the box-like case near the outside of the peripheral wall of one side square positioning member for the printed circuit board comprising a counter-position-decided Me member and Y direction X direction-position-decided Me member provided in the peripheral wall perpendicular to the direction of the peripheral wall of the counter-position-decided Me member and the one side, Consisting of
Wherein the printed circuit board is first on the Z-direction is lowered toward the lower after contact on the peripheral wall of the box-like case, be by sliding a predetermined distance along with and the Y-direction along the X-direction A printed circuit board mounting structure that is completely fixed by
The Z-direction positioning member has a locking projection facing inward at the top,
The Y-direction positioning member has an elastic support and has a locking projection at the top with a tapered locking projection facing inward,
The X-direction positioning member has a long locking projection at the top that faces inward and that is long in the Y-direction ,
The printed circuit board is fixed to the box-shaped case,
(A) and the Y direction to the predetermined distance large enough to penetrate the locking projection of the Z-direction positioning member to distant sites of the cutout from the position of each of said Z-direction positioning member,
(B) a notch that is locked to the tapered locking protrusion of the Y-direction positioning member;
(C) to the elongated locking projection and the locking of the X-direction positioning member, and lacks long elongated cutting in the Y direction, by providing,
After the long locking protrusion is locked to the long cutout and the printed circuit board is positioned in the X direction, the long locking protrusion is completely engaged with the long cutout. By sliding the printed circuit board in the Y direction to stop, until the tapered locking projection of the Y direction positioning member is bent by the elastic characteristics of the resin material and pushed outward by the edge of the printed circuit board The printed circuit board mounting structure is characterized in that the printed circuit board is positioned in the Y direction by being locked in the notch corresponding to the tapered locking protrusion from the state described above.
However, the Z direction is a direction perpendicular to the mounting surface of the printed circuit board in a state where the printed circuit board is fixed to the box-shaped case,
The Y direction is a direction along the peripheral wall of the one side and perpendicular to the Z direction,
X direction is perpendicular to Z direction and perpendicular to Y direction
It is.

The printed circuit board mounting structure according to claim 1, wherein the Z-direction positioning member is erected at a plurality of locations near the outside of the peripheral wall of the one side .

The printed circuit board mounting structure according to claim 1, wherein the Z-direction positioning member is erected in the vicinity of the outside of the peripheral wall facing the peripheral wall of the one side .

The printed circuit board mounting structure according to claim 1, wherein the Y-direction positioning member is erected in the vicinity of the outside of the peripheral wall facing the peripheral wall of the one side .

The printed circuit board mounting structure according to claim 1, wherein the X-direction positioning member is erected at a substantially central portion of the peripheral wall.

A slide member having a slide surface that receives the printed circuit board lowered from the Z direction and slides along the peripheral wall of the box-shaped case is flush with the upper portion of the peripheral wall of the box-shaped case. 2. The printed circuit board mounting structure according to claim 1, wherein the printed circuit board mounting structure is provided so as to face upward.