JP3939910B2 - Substrate storage case - Google Patents

Substrate storage case Download PDF

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Publication number
JP3939910B2
JP3939910B2 JP2000308104A JP2000308104A JP3939910B2 JP 3939910 B2 JP3939910 B2 JP 3939910B2 JP 2000308104 A JP2000308104 A JP 2000308104A JP 2000308104 A JP2000308104 A JP 2000308104A JP 3939910 B2 JP3939910 B2 JP 3939910B2
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Japan
Prior art keywords
substrate
curved
substrate housing
sectional
vertical
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Expired - Fee Related
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JP2000308104A
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Japanese (ja)
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JP2002118369A (en
Inventor
浩章 中田
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Keihin Corp
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Keihin Corp
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Description

【0001】
【発明の属する技術分野】
この発明は基板収容ケースに関し、より詳しくは基板をガイドリブで案内してケースに収容するための基板収容ケースに関する。
【0002】
【従来の技術】
基板収容ケースとしては、例えば、実公平5−25271号公報記載のものなどが知られている。
【0003】
この種の基板収容ケースは、一般に、開口端付近にガイドリブを設け、そのガイドリブで基板を案内して収容部に固定している。そのような基板収容ケースにあっては、基板がガイドリブに引っ掛かった状態でネジ留めされてしまうと、基板が所定の位置にないまま固定される恐れがある。
【0004】
【発明が解決しようとする課題】
従って、この発明は、基板をガイドリブで案内して基板収容ケースに収容するとき、ガイドリブにおける引っ掛かりを防止し、基板を基板収容部上に所期通りに位置させて固定することができるようにした基板収容ケースを提供することを目的とする。
【0005】
さらに、この発明は、基板の引っ掛かりが生じた場合、それを容易に検知して対策することができるようにした基板収容ケースを提供することを第2の目的とする。
【0006】
【課題を解決するための手段】
上記課題を解決するため、請求項1項においては、少なくとも一に開口端を有し、その内部に基板を収容する基板収容部を備えると共に、前記基板が前記基板収容部と前記開口端の間に突設されたガイドリブで案内されつつ挿入されて前記基板収容部上に固定される基板収容ケースにおいて、前記ガイドリブが、前記開口端から前記基板収容部に向けて前記基板収容ケースの壁面からの厚みが拡径されるテーパ部と、断面視において所定の曲率で湾曲させられつつ前記テーパ部に連続する湾曲部と、および前記湾曲部と前記基板収容部の間に形成される垂直部とから構成され、前記基板の厚みがtで、長さlのネジでネジ留めされて前記基板収容部上に固定されると共に、前記テーパ部と垂直部を断面視において仮想的に延長したときに両者の交差によって形成される交点と、前記垂直部の間の距離をxとし、さらに前記垂直部の長さをcとするとき、
x≧l−c−t
となるように、前記テーパ部と湾曲部と垂直部の形状が決定されるようにした。
【0007】
テーパ部を、その厚みが開口端から基板収容部に向けて拡径されるように構成すると共に、断面視において所定の曲率で湾曲させられつつ前記テーパ部に連続する湾曲部を設けたので、基板をガイドリブで案内して基板収容ケースに収容するとき、ガイドリブにおける引っ掛かりを防止し、基板を基板収容部上に所期通りに位置させて固定することができる。また、上記条件式を満たすように、テーパ部と湾曲部と垂直部の形状が決定されるので、引っ掛かりが生じた場合はネジ留めが出来ないこととなり、基板の引っ掛かりを容易に検知することができ、挿入し直すなど必要な対策をとることができる。
【0010】
【発明の実施の形態】
以下、添付図面を参照してこの発明の一つの実施の形態に係る基板収容ケースを説明する。
【0011】
最初に、従来技術に係る基板収容ケースの構成について、図6および図7を参照して説明する。尚、以下の説明において、「上方」「下方」は鉛直軸(重力軸)に対する上下方向を表すものとする。
【0012】
図6は、従来技術に係る基板収容ケース100を横方向から見るように切断した断面図である。従来技術に係る基板収容ケース100は、基板102が挿入可能なように一端(図では上端。以下「開口端」という)が開口される。また、挿入された基板102が収容されて固定される基板収容部104が設けられる。
【0013】
基板収容部104と前記開口端の間には、基板102を挿入するとき、それを案内するために複数個のガイドリブ106が突設される。
【0014】
図7は、図6に示す領域Aの拡大断面図である。同図を参照して、従来技術に係る基板収容ケース100に設けられたガイドリブ106の構成を説明する。
【0015】
従来技術に係る基板収容ケース100にあっては、図7に良く示すように、基板102がテーパ部106aの開口端側の開始位置(図に基板102を実線で示す)、あるいはテーパ部106aと垂直部106bとが連続する位置(図に基板102を破線で示す)などにおいて引っ掛かり、基板102の収容が不完全となることがある。
【0016】
基板102が図7で実線で示すような引っ掛かりを生じたときは目視検査などにより比較的容易に発見できるものの、破線で示すような引っ掛かりを生じたときにネジ留めされてしまうと、収容が不完全のものが完全であると判断される恐れがある。
【0017】
このような従来技術の不都合を解消するため、この実施の形態に係る基板収容ケースにあっては、基板をガイドリブで案内して基板収容ケースに収容するとき、ガイドリブにおける引っ掛かりを防止し、基板を基板収容部上に所期通りに位置させて固定することができるようにした。
【0018】
図1は、この実施の形態に係る基板収容ケース10を説明するための上面図、図2はそのII−II線断面図である。但し、図1は基板12を収容して後述するようにネジ留めを完了したものを示し、図2は基板12を収容する前の状態を示す。
【0019】
この実施の形態に係る基板収容ケース10は、図6および図7を参照して説明した従来技術に係る基板収容ケース100と同様に、図2に示す如く、一端(図では上端。以下「開口端14」という)で開口される。
【0020】
また、開口端14の下方位置には基板収容ケース10の内周にわたり、挿入された基板12が固定される、ステップ状の基板収容部16が設けられる。
【0021】
基板収容ケース10は上面視略矩形状を呈すると共に、その開口端14と基板収容部16の間には、基板12を案内するために、前記矩形の一辺当り2個つ、計8個のガイドリブ18が、所定間隔をおいて基板収容ケース10の内側に向けて突設される。
【0022】
図3は、図2に示す領域Bの周辺を模式的に示す拡大断面図である。但し、図3は基板12を収容した状態を示す。図3から明らかなように、ガイドリブ18はそれぞれ、開口端14から基板収容部16に向けて、前記基板収容ケース10の壁面20(図1に図示)、より詳しくは内壁面からの厚みが拡径されるように形成されたテーパ部18aと、所定の曲率rで湾曲させられつつテーパ部18aに連続する湾曲部18bと、湾曲部18bと基板収容部16の間に形成される長さcの垂直部18cとから構成される。尚、ガイドリブ18の内壁面(壁面20)からの高さはa、開口端14から基板収容部16までの長さはbである。
【0023】
湾曲部18bは角度θの範囲で設けられ、その基板接触面は、テーパ部18aおよび垂直部18cと連続するように形成される。
【0024】
このように、テーパ部18aを開口端14から開始して基板収容部16に向けて拡径されるようにしたので、基板12がガイドリブ18で案内されつつ基板収容ケース10に収容されるとき、基板12が開口端14あるいはテーパ部18aに引っ掛かるのを防止することができる。
【0025】
また、テーパ部18aに連続して湾曲部18bを形成したので、基板12がテーパ部18aから垂直部18cに案内されるときも、湾曲部18bを通過させることで、引っ掛かりを防止することができ、よって基板12を基板収容部16の上に所期通りに位置させて固定することができる。
【0026】
次いで、テーパ部18aと湾曲部18bと垂直部18cの形状の決定について説明する。図4はガイドリブ18の周辺を図3と同様に模式的に示す説明断面図である。図4にあっては、理解を容易にするため、各部の寸法を意図的に図3と相違させて図示した。
【0027】
図3および図4を参照して説明すると、θと図4に示す各部の寸法a,b,c,r,の関係は次のように表される。
tanθ=a/(b−(c+x))・・・(1)
また、xとθの関係は次のように表される。
x=r・sin(θ/2)
これをrについて整理すると次のように表される。
r=x/sin(θ/2)・・・(2)
【0028】
ここで、xはテーパ部18aと垂直部18cを断面視において仮想的に延長したときに両者の交差によって形成される交点、即ち図4に示す点Dと垂直部18cの距離である。上記の式(1)(2)において、xが決定されれば、湾曲部18bの曲率r、および湾曲部18bが設けられる範囲(角度)θは一義的に決定されるので、式(1)(2)は、xについての従属関数である。
【0029】
図5は、図1におけるV−V線断面を模式的に示す拡大断面図である。
【0030】
図1に示すように、挿入された基板12は基板収容部16に収容された後、前記矩形の四隅付近においてネジ留めされて固定される。図5を参照してネジ留め部分付近の構成を説明する。
【0031】
基板12の適宜箇所にはネジ挿通孔22が穿設される。また、基板収容部16の対応位置にはネジ穴24が形成される。基板12は、ネジ26がネジ挿通孔22に挿通されると共に、ネジ穴24に挿入されて締め込まれることにより固定される。
【0032】
このとき、図5に示すように、xがネジの長さl、基板12の厚みtおよび垂直部18cの長さcの関係が以下の条件式(3)を満たすとき、基板12が実線で示すような位置に引っ掛かった場合、ネジ26がネジ穴24に届かないので、ネジ留めすることができない。
x≧l−c−t・・・(3)
但し、l−c>c≧tである。
【0033】
条件式(3)に基づき、式(1)および式(2)を用いてテーパ部18aと湾曲部18bと垂直部18cの形状が決定される。
【0034】
従って、目視では基板12が基板収容部16に接触(収容)しているように判断されるときでも、ネジ留めができない場合、引っ掛かっていると判断することができ、基板12を挿入し直すなど必要な対策をとることができる。
【0035】
この実施の形態にあっては、上記のようにテーパ部18aを、その厚みが開口端14から基板収容部16に向けて拡径されるように構成すると共に、断面視において所定の曲率で湾曲させられつつ前記テーパ部に連続する湾曲部を設けたので、基板12をガイドリブ18で案内して基板収容ケース10に収容するとき、ガイドリブにおける引っ掛かりを防止し、基板12を基板収容部16の上に所期通りに位置させて固定することができる。
【0036】
また、テーパ部18aと湾曲部18bと垂直部18cの形状が、前記条件式(3)を満たすように決定されるので、引っ掛かりが生じた場合はネジ留めすることができないことから、それを容易に検知することができ、挿入し直すなど必要な対策をとることができる。
【0037】
上記した如く、この実施の形態においては、少なくとも一に開口端14を有し、その内部に基板12を収容する基板収容部16を備えると共に、前記基板が前記基板収容部と前記開口端の間に突設されたガイドリブ18で案内されつつ挿入されて前記基板収容部上に固定される基板収容ケース10において、前記ガイドリブが、前記開口端から前記基板収容部に向けて前記基板収容ケースの壁面20、より詳しくは内壁面からの厚みが拡径されるテーパ部18aと、断面視において所定の曲率rで湾曲させられつつ前記テーパ部に連続する湾曲部18bと、および前記湾曲部と前記基板収容部の間に形成される垂直部18cとから構成され、前記基板の厚みがtで、長さlのネジ26でネジ留めされて前記基板収容部上に固定されると共に、前記テーパ部と垂直部を断面視において仮想的に延長したときに両者の交差によって形成される交点Dと、前記垂直部の間の距離をxとし、さらに前記垂直部の長さをcとするとき、
x≧l−c−t
となるように、前記テーパ部と湾曲部と垂直部の形状が決定される如くした。
【0039】
尚、上記した実施の形態において、ガイドリブ18の個数を8個としたが、その数に限られるものではなく、他の適宜な個数にしてもよい。
【0040】
また、基板収容ケース10の開口端14の形状を略矩形としたが、それに限られるものではなく、多角形状などの様々な形状であってもよい。
【0041】
【発明の効果】
請求項1項においては、テーパ部を前記開口端から前記基板収容部に向けてその厚みが拡径されるように構成すると共に、断面視において所定の曲率で湾曲させられつつ前記テーパ部に連続する湾曲部を設けたので、基板をガイドリブで案内して基板収容ケースに収容するとき、ガイドリブにおける引っ掛かりを防止し、基板を基板収容部上に所期通りに位置させて固定することができる。また、前記条件式(x≧l−c−t)を満たすように、前記テーパ部と湾曲部と前記垂直部の形状が決定されるので、引っ掛かりが生じた場合はネジ留めが出来ないため、基板の引っ掛かりを容易に検知することができ、挿入し直すなど必要な対策をとることができる。
【図面の簡単な説明】
【図1】この発明の一つの実施の形態に係る基板収容ケースの上面図である。
【図2】図1のII−II線断面図である。
【図3】図2のガイドリブを含む領域Bの周辺を模式的に示す拡大断面図である。
【図4】図3と同様に、図2のガイドリブの周辺を模式的に示す説明断面図である。
【図5】図1のV−V線に沿った構造を模式的に示す拡大断面図である。
【図6】従来技術に係る基板収容ケースを適宜な位置で切断した断面図である。
【図7】図6の領域Aの拡大断面図である。
【符号の説明】
10 基板収容ケース
12 基板
14 開口端
16 基板収容部
18 ガイドリブ
18a テーパ部
18b 湾曲部
18c 垂直部
20 (基板収容ケースの)壁面
26 ネジ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a substrate housing case, and more particularly to a substrate housing case for guiding a substrate with a guide rib and housing it in the case.
[0002]
[Prior art]
As the substrate housing case, for example, the one described in Japanese Utility Model Publication No. 5-25271 is known.
[0003]
In this type of substrate accommodation case, a guide rib is generally provided in the vicinity of the opening end, and the substrate is guided by the guide rib and fixed to the accommodation portion. In such a substrate housing case, if the substrate is screwed in a state of being caught by the guide rib, the substrate may be fixed without being in a predetermined position.
[0004]
[Problems to be solved by the invention]
Therefore, according to the present invention, when the substrate is guided by the guide rib and accommodated in the substrate housing case, the guide rib can be prevented from being caught, and the substrate can be positioned and fixed on the substrate housing portion as expected. An object is to provide a substrate storage case.
[0005]
Furthermore, a second object of the present invention is to provide a substrate housing case that can easily detect and take measures when a substrate is caught.
[0006]
[Means for Solving the Problems]
To solve the above problems, in claim 1, wherein, having an open end on at least one hand, provided with a substrate accommodating portion for accommodating a substrate therein, the substrate of the open end and the substrate retainer In a substrate housing case that is inserted while being guided by a guide rib projecting therebetween and is fixed on the substrate housing portion, the guide rib extends from the wall surface of the substrate housing case toward the substrate housing portion from the opening end. A tapered portion whose diameter is increased, a curved portion that is curved with a predetermined curvature in a sectional view and continues to the tapered portion, and a vertical portion that is formed between the curved portion and the substrate housing portion. When the thickness of the substrate is t, and it is fixed on the substrate housing portion by being screwed with a screw having a length l, and the taper portion and the vertical portion are virtually extended in a sectional view. Both When an intersection point formed by the intersection of the distance between the vertical portion and x, further to the length of the vertical portion is c,
x ≧ l−c−t
Thus, the shape of the tapered portion, the curved portion, and the vertical portion is determined .
[0007]
Since the taper portion is configured so that the thickness thereof is increased from the opening end toward the substrate housing portion, and the curved portion that is curved with a predetermined curvature in a cross-sectional view and is continuous with the taper portion is provided, When the substrate is guided by the guide rib and accommodated in the substrate accommodation case, the guide rib can be prevented from being caught, and the substrate can be positioned and fixed on the substrate accommodation portion as expected. In addition, since the shape of the tapered portion, the curved portion, and the vertical portion is determined so as to satisfy the above conditional expression, if the catch occurs, it cannot be screwed, and the catch of the substrate can be easily detected. You can take necessary measures such as reinserting.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a substrate housing case according to an embodiment of the present invention will be described with reference to the accompanying drawings.
[0011]
Initially, the structure of the board | substrate storage case based on a prior art is demonstrated with reference to FIG. 6 and FIG. In the following description, “upper” and “lower” represent the vertical direction with respect to the vertical axis (gravity axis).
[0012]
FIG. 6 is a cross-sectional view of the substrate housing case 100 according to the prior art cut so as to be seen from the lateral direction. One end (upper end in the figure; hereinafter referred to as “open end”) of the substrate storage case 100 according to the prior art is opened so that the substrate 102 can be inserted. In addition, a substrate storage portion 104 is provided in which the inserted substrate 102 is stored and fixed.
[0013]
A plurality of guide ribs 106 project between the substrate housing portion 104 and the opening end to guide the substrate 102 when the substrate 102 is inserted.
[0014]
FIG. 7 is an enlarged cross-sectional view of region A shown in FIG. With reference to the figure, the structure of the guide rib 106 provided in the board | substrate storage case 100 which concerns on a prior art is demonstrated.
[0015]
In the substrate housing case 100 according to the prior art, as well shown in FIG. 7, the substrate 102 has a start position on the opening end side of the tapered portion 106a (the substrate 102 is indicated by a solid line in the drawing), or the tapered portion 106a. There is a case where the substrate 102 is incompletely accommodated by being caught at a position where the vertical portion 106b is continuous (the substrate 102 is indicated by a broken line in the drawing).
[0016]
When the substrate 102 is caught as shown by a solid line in FIG. 7, it can be found relatively easily by visual inspection or the like. However, if the substrate 102 is caught by a screw as shown by a broken line, it cannot be accommodated. There is a risk that the perfect will be judged complete.
[0017]
In order to eliminate such disadvantages of the prior art, in the substrate accommodation case according to this embodiment, when the substrate is guided by the guide rib and accommodated in the substrate accommodation case, the guide rib is prevented from being caught, It was designed to be positioned and fixed on the substrate housing part as expected.
[0018]
FIG. 1 is a top view for explaining a substrate housing case 10 according to this embodiment, and FIG. 2 is a sectional view taken along the line II-II. However, FIG. 1 shows the substrate 12 that has been accommodated and screwed as will be described later, and FIG. 2 shows a state before the substrate 12 is accommodated.
[0019]
As shown in FIG. 2, the substrate storage case 10 according to this embodiment is similar to the substrate storage case 100 according to the prior art described with reference to FIG. 6 and FIG. At the end 14 ").
[0020]
Further, a step-like substrate accommodation portion 16 to which the inserted substrate 12 is fixed is provided at a position below the opening end 14 over the inner periphery of the substrate accommodation case 10.
[0021]
With the substrate housing case 10 presents a top view substantially rectangular shape, between the open end 14 and the substrate receiving portion 16, to guide the substrate 12, the One not a 2 per one side of the rectangle, total of eight Guide ribs 18 project toward the inside of the substrate housing case 10 at a predetermined interval.
[0022]
FIG. 3 is an enlarged cross-sectional view schematically showing the periphery of the region B shown in FIG. However, FIG. 3 shows a state in which the substrate 12 is accommodated. As is clear from FIG. 3, the guide ribs 18 increase in thickness from the wall surface 20 (shown in FIG. 1) of the substrate housing case 10, more specifically from the inner wall surface, from the opening end 14 toward the substrate housing portion 16. A tapered portion 18a formed to have a diameter, a curved portion 18b that is curved with a predetermined curvature r and continues to the tapered portion 18a, and a length c formed between the curved portion 18b and the substrate housing portion 16 And a vertical portion 18c. The height of the guide rib 18 from the inner wall surface (wall surface 20) is a, and the length from the opening end 14 to the substrate housing portion 16 is b.
[0023]
The curved portion 18b is provided in the range of the angle θ, and the substrate contact surface is formed so as to be continuous with the tapered portion 18a and the vertical portion 18c.
[0024]
Thus, since the taper portion 18a starts from the opening end 14 and is increased in diameter toward the substrate accommodation portion 16, when the substrate 12 is accommodated in the substrate accommodation case 10 while being guided by the guide rib 18, It is possible to prevent the substrate 12 from being caught by the opening end 14 or the tapered portion 18a.
[0025]
In addition, since the curved portion 18b is formed continuously to the tapered portion 18a, even when the substrate 12 is guided from the tapered portion 18a to the vertical portion 18c, the curved portion 18b can be passed to prevent catching. Therefore, the substrate 12 can be positioned and fixed on the substrate accommodating portion 16 as desired.
[0026]
Next, determination of the shapes of the tapered portion 18a, the curved portion 18b, and the vertical portion 18c will be described. 4 is an explanatory sectional view schematically showing the periphery of the guide rib 18 in the same manner as FIG. In FIG. 4, the dimensions of each part are intentionally different from those in FIG. 3 in order to facilitate understanding.
[0027]
If it demonstrates with reference to FIG. 3 and FIG. 4, the relationship between (theta) and the dimension a, b, c, r, x of each part shown in FIG. 4 will be represented as follows.
tan θ = a / (b− (c + x)) (1)
Further, the relationship between x and θ is expressed as follows.
x = r · sin (θ / 2)
When this is arranged for r, it is expressed as follows.
r = x / sin (θ / 2) (2)
[0028]
Here, x is an intersection formed by the intersection of the taper portion 18a and the vertical portion 18c in a cross-sectional view, that is, the distance between the point D and the vertical portion 18c shown in FIG. In the above equations (1) and (2), if x is determined, the curvature r of the bending portion 18b and the range (angle) θ in which the bending portion 18b is provided are uniquely determined. (2) is a dependent function for x.
[0029]
FIG. 5 is an enlarged cross-sectional view schematically showing a cross section taken along line VV in FIG.
[0030]
As shown in FIG. 1, the inserted substrate 12 is accommodated in the substrate accommodating portion 16 and then fixed by screwing in the vicinity of the four corners of the rectangle. With reference to FIG. 5, the configuration in the vicinity of the screwing portion will be described.
[0031]
Screw insertion holes 22 are drilled at appropriate locations on the substrate 12. A screw hole 24 is formed at a corresponding position of the substrate housing portion 16. The substrate 12 is fixed by inserting the screw 26 into the screw insertion hole 22 and inserting the screw 26 into the screw hole 24 and tightening.
[0032]
At this time, as shown in FIG. 5, when the relationship between x is the screw length l, the thickness t of the substrate 12 and the length c of the vertical portion 18c satisfies the following conditional expression (3), the substrate 12 is a solid line. When caught in the position shown, the screw 26 does not reach the screw hole 24 and cannot be screwed.
x ≧ l−c−t (3)
However, l−c> c ≧ t.
[0033]
Based on the conditional expression (3), the shapes of the tapered portion 18a, the curved portion 18b, and the vertical portion 18c are determined using the equations (1) and (2).
[0034]
Therefore, even when it is visually determined that the substrate 12 is in contact (accommodated) with the substrate accommodating portion 16, if it cannot be screwed, it can be determined that the substrate 12 is caught, and the substrate 12 is reinserted. Necessary measures can be taken.
[0035]
In this embodiment, as described above, the taper portion 18a is configured so that the thickness thereof is increased from the opening end 14 toward the substrate housing portion 16, and is curved with a predetermined curvature in a sectional view. Since the curved portion that is continuous with the tapered portion is provided, when the substrate 12 is guided by the guide rib 18 and accommodated in the substrate accommodation case 10, the guide rib is prevented from being caught and the substrate 12 is placed on the substrate accommodation portion 16. It can be positioned and fixed as expected.
[0036]
In addition, since the shapes of the taper portion 18a, the curved portion 18b, and the vertical portion 18c are determined so as to satisfy the conditional expression (3), it is difficult to screw them when they are caught. Can be detected, and necessary measures such as reinsertion can be taken.
[0037]
As described above, in this embodiment, has an open end 14 at least on the other hand, provided with a substrate receiving portion 16 for accommodating the substrate 12 in its interior, wherein the substrate of said open end and said substrate accommodating portion In the substrate housing case 10 that is inserted while being guided by the guide ribs 18 provided therebetween and is fixed on the substrate housing portion, the guide ribs of the substrate housing case are directed from the opening end toward the substrate housing portion. The wall surface 20, more specifically, a tapered portion 18a whose diameter is expanded from the inner wall surface, a curved portion 18b that is curved with a predetermined curvature r in a cross-sectional view and continues to the tapered portion, and the curved portion and the is composed of a vertical portion 18c which is formed between the substrate accommodating portion, the thickness of the substrate is t, with being screwed with a screw 26 of length l is fixed on the substrate retainer When the taper portion and the vertical portion are virtually extended in a cross-sectional view, the distance between the intersection D formed by the intersection of the two and the vertical portion is x, and the length of the vertical portion is c. When
x ≧ l−c−t
Thus, the shapes of the tapered portion, the curved portion, and the vertical portion are determined.
[0039]
In the above-described embodiment, the number of guide ribs 18 is 8. However, the number of guide ribs 18 is not limited to that, and may be any other appropriate number.
[0040]
Moreover, although the shape of the opening end 14 of the board | substrate storage case 10 was made into the substantially rectangular shape, it is not restricted to it, Various shapes, such as polygonal shape, may be sufficient.
[0041]
【The invention's effect】
According to a first aspect of the present invention, the taper portion is configured such that the thickness of the taper portion increases from the opening end toward the substrate housing portion, and is continuous with the taper portion while being curved with a predetermined curvature in a cross-sectional view. Since the curved portion is provided, when the substrate is guided by the guide rib and accommodated in the substrate accommodation case, the guide rib can be prevented from being caught, and the substrate can be positioned and fixed on the substrate accommodation portion as expected. In addition, since the shape of the tapered portion, the curved portion, and the vertical portion is determined so as to satisfy the conditional expression (x ≧ l−ct), when the catch occurs, it cannot be screwed. The catch of the substrate can be easily detected, and necessary measures such as reinsertion can be taken.
[Brief description of the drawings]
FIG. 1 is a top view of a substrate housing case according to an embodiment of the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
3 is an enlarged cross-sectional view schematically showing the periphery of a region B including a guide rib in FIG. 2. FIG.
4 is an explanatory cross-sectional view schematically showing the periphery of the guide rib in FIG. 2 as in FIG. 3;
FIG. 5 is an enlarged cross-sectional view schematically showing a structure taken along line VV of FIG.
FIG. 6 is a cross-sectional view of a substrate storage case according to the prior art cut at an appropriate position.
7 is an enlarged sectional view of a region A in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Substrate accommodation case 12 Substrate 14 Open end 16 Substrate accommodation part 18 Guide rib 18a Tapered part 18b Curved part 18c Vertical part 20 Wall surface 26 (of substrate accommodation case) Screw

Claims (1)

少なくとも一に開口端を有し、その内部に基板を収容する基板収容部を備えると共に、前記基板が前記基板収容部と前記開口端の間に突設されたガイドリブで案内されつつ挿入されて前記基板収容部上に固定される基板収容ケースにおいて、前記ガイドリブが、
a.前記開口端から前記基板収容部に向けて前記基板収容ケースの壁面からの厚みが拡径されるテーパ部と、
b.断面視において所定の曲率で湾曲させられつつ前記テーパ部に連続する湾曲部と、
および、
c.前記湾曲部と前記基板収容部の間に形成される垂直部と、
から構成され、前記基板の厚みがtで、長さlのネジでネジ留めされて前記基板収容部上に固定されると共に、前記テーパ部と垂直部を断面視において仮想的に延長したときに両者の交差によって形成される交点と、前記垂直部の間の距離をxとし、さらに前記垂直部の長さをcとするとき、
x≧l−c−t
となるように、前記テーパ部と湾曲部と垂直部の形状が決定されることを特徴とする基板収容ケース。
Has an open end on at least one hand, provided with a substrate accommodating portion for accommodating a substrate therein, the substrate is inserted while being guided by the guide ribs which protrude between said open end and said substrate accommodating portion In the substrate housing case fixed on the substrate housing portion, the guide rib is
a. A tapered portion whose diameter from the wall surface of the substrate housing case is increased from the opening end toward the substrate housing portion;
b. A curved portion that is curved with a predetermined curvature in a cross-sectional view and continues to the tapered portion;
and,
c. A vertical portion formed between the curved portion and the substrate housing portion;
When the thickness of the substrate is t and it is screwed with a screw of length l and fixed on the substrate housing portion, and the taper portion and the vertical portion are virtually extended in a sectional view When the distance between the intersection formed by the intersection of the two and the vertical portion is x, and the length of the vertical portion is c,
x ≧ l−c−t
The shape of the taper portion, the curved portion, and the vertical portion is determined so that
JP2000308104A 2000-10-06 2000-10-06 Substrate storage case Expired - Fee Related JP3939910B2 (en)

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JP3939910B2 true JP3939910B2 (en) 2007-07-04

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Publication number Priority date Publication date Assignee Title
JP5963501B2 (en) * 2012-03-29 2016-08-03 株式会社ケーヒン Electronics
JP2017063154A (en) * 2015-09-25 2017-03-30 シャープ株式会社 Electronic device parts set and mounting method
US10251297B2 (en) 2016-12-21 2019-04-02 Robert Bosch Llc Printed circuit board housing including guiding ribs
JP6466007B2 (en) * 2018-03-01 2019-02-06 キヤノン株式会社 Image forming apparatus
JP7200336B2 (en) * 2020-08-06 2023-01-06 キヤノン株式会社 image forming device

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