JP4237841B2

JP4237841B2 - Cover mounting device in equipment casing

Info

Publication number: JP4237841B2
Application number: JP04999398A
Authority: JP
Inventors: 克治中野
Original assignee: NEC Platforms Ltd
Current assignee: NEC Platforms Ltd
Priority date: 1998-02-17
Filing date: 1998-02-17
Publication date: 2009-03-11
Anticipated expiration: 2018-02-17
Also published as: JPH11227812A

Description

【０００１】
【発明の属する技術分野】
本発明は、機器筐体におけるベースの開放部にカバーを有頭ネジの締め付けにより着脱自在に取り付けるようにするほか、ネジを適度に緩めた状態のもとにカバーを取り外すことができるようにした型式の機器筐体におけるカバー取付装置に関するものであり、電気機器の筐体，家具の筐体，機械の筐体，輸送用筐体，その他の種々の筐体が適用対象となる。
【０００２】
【従来の技術】
従来のこの種のカバー取付装置としては、例えば図６および図７のように、箱形ベースＡの前方開放部ＢにカバーＣを有頭ネジＤにより着脱自在に取り付けるようにし、かつカバーＣには通称だるま形の孔Ｅを穿設すると共に、ベースＡには雌ネジ部Ｆを形成し、もって雌ネジ部Ｆに有頭ネジＤを途中までねじ込んだ状態のもとに、カバーＣをその孔Ｅにおける大径部にネジＤの頭部が挿通するようにベースＡの開放部Ｂに当接した後、ネジＤが孔Ｅにおける小径部に対応するようにスライドし、その後ネジＤを締め付けて固定するようにした型式がある。
【０００３】
【発明が解決しようとする課題】
上記従来装置によれば、カバーＣを取り付けた後において、だるま形の孔Ｅの大径部からベースＡの内部が見えるばかりでなく、外部から異物，塵埃，害虫等の侵入を来し易い欠点があるほか、ネジＤの頭部がカバーＣの表部に突出するから、重ね合わせに不便で、かつ体裁も悪いという欠点があり、その他外形寸法の表示に際して、ネジＤの頭部を含めた大型寸法に表示しなければならない等の不利がある。
【０００４】
ベースＡの内部が見えないようする方策として、図７に鎖線で示すように、孔Ｅの大径部に対応するベースＡの一部に板状の目隠しＧを設けることが考えられるが、このような目隠しＧをベースＡと一体的にプラスチック成形により設ける場合は成形用金型が著しく複雑となり、また別体に設ける場合には構造が複雑かつ組み立てが煩雑となる欠点がある。
【０００５】
そこで本発明の目的は、ネジを緩めた状態のもとにカバーの取り外しが可能な型式の機器筐体におけるカバー取付装置において、簡単な構成のもとに、カバーの表部にネジが突出しない構造で、かつ異物，塵埃，害虫等が侵入し難い構造のカバー取付装置を提供することにある。
【０００６】
【課題を解決するための手段】
本発明は、上記目的を達成するため、ベース（１）の開放部（２）にカバー（３）を有頭ネジ（５）の締め付けにより着脱自在に取り付けるようにするほか、ネジ（５）を適度に緩めた状態のもとにカバー（３）を取り外すことができるようにした型式の機器筐体において、ベース（１）の開放部（２）よりも内方に設けられた雌ネジ部（４）と、カバー（３）の前記雌ネジ部（４）に対応する位置にカバー主体部の外面から略垂直に陥没した状態で設けられた座面部（６）とを有し、前記座面部（６）は、ネジ（５）の頭部に対接する受面（６ｂ）と、カバー主体部の外面から該受面（６ｂ）の周囲まで略垂直に延びる側壁と、該受面（６ｂ）の略中央からカバー装着方向に延び、ネジ（５）の軸径よりも少し大きい幅を持つ切欠（６ａ）とを備えており、さらに、前記切欠（６ａ）に連続して座面部（６）の前記側壁に形成され、ネジ（５）の頭部付近を側方から通過させることができる開通部（７）を有し、カバー装着時に、ネジ（５）の頭部の側方の一部が前記受面（６ｂ）から食み出して前記開通部（７）に入り込むことにより、該開通部（７）を塞ぐようになっていることを特徴とするものである。このような構成により、ネジの頭部はカバー表部に突出することなく、かつ、ネジの頭部付近を座面部側方の開通部に通過させつつカバーをスライドして着脱させることができ、だるま形の大型孔を穿設する必要性がない。
【０００７】
尚、開通部の少なくとも一部が、カバー主体部の内面に形成された凹部によって構成されてもよい。
【０００８】
【発明の実施の形態】
以下、本発明装置を図面に示す実施形態について詳細に説明する。
【０００９】
適用対象としての機器筐体としては、例えば図１および図２のように、前方全面が開放された箱形のベース１における解放部２に板状のカバー３を着脱自在に取り付けるようにするほか、ベース１内には取り付け用の雌ネジ部４をボス４ａに対する雌ネジ４ｂの埋設により設けると共に、これに対してカバー３には前記雌ネジ部４に対応する位置に、有頭ネジ５の頭部に対接する座面部６を設けて、ベース１の開放部２にカバー３を冠せかけた状態のもとにネジ５により締め付け固定する型式を採択する。
【００１０】
上記型式の機器筐体に対する本発明の特殊構成としては、例えば図１ないし図３のように、雌ネジ部４を、開放部２よりも底部寄りの内方位置に設けると共に、カバー３には、ネジ５の頭部に対接する受面６ｂと、受面６ｂの周囲からカバー主体部の外面まで略垂直に延びる側壁と、受面６ｂの略中央から側壁までカバー着脱方向に延び、ネジ５の軸径よりも少し大きい幅を持つ切欠６ａとを備えた座面部６を、カバー主体部から陥没した状態で設けると共に、座面部６の一側方（図面において下方）には、ネジ５の頭部付近を通過させることができる開通部７を形成する。図１および図２からよく分かるように、カバー装着時にネジ５の頭部の側方の一部が受面６ｂから食み出して開通部７に入り込むことによってネジ５の頭部が開通部７を塞ぐように構成されているため、カバー装着時に、筐体内部をほぼ完全に遮蔽することができる。
【００１１】
上記構成のもとに、図４のようにベース１における雌ネジ部４にネジ５を途中までねじ込んだまま、カバー３を開通部７付近の側部がネジ５の頭部に対応する状態のもとにベース１の開放部２に当接した後、座面部６がネジ５の頭部に対応するようにスライドして装着し、その後ネジ５を締め付けて固定するようにする。なおカバー３の取り外しに際しては、ネジ５を適度に緩めた後に、カバー３を前記装着の場合とは反対方向にスライドさせればよい。
【００１２】
前記座面部６の深さについては、カバー３の板厚と、ネジ５の頭部の高さと、ネジ５の締め代とを加えた寸法に選定することが重要であるが、図５のようにカバー３における開通部７に隣接した裏面に凹部８を設けることにより、座面部６の深さを浅く形成することができる。
【００１３】
なお、Ｕ字状の座面部６については、ネジ５に対するドライバの操作に支障とならない範囲において、Ｕ字の高さを低く選定することが望ましく、これによりベース１内外の連通間隙を最小限に制限することができる。また、座面部６について、これをＵ字状に限ることなく種々の形状に形成してもよい。
【００１４】
【発明の効果】
以上説明したように、本発明によれば、ネジ５の頭部が対接する座面部６をカバー主体部の外面から略垂直方向に陥没状態で設けると共に、座面部６の側方にネジ５の頭部を側方へ通過させることができる開通部７を設けたから、これにより著しく簡単な構成のもとに、カバー３の表部にネジ５の頭部を突出させることなく、しかも従来構造のだるま形孔のような大径孔を穿設する必要がない関係上、内部を体裁よく遮蔽するほか、異物，塵埃，害虫等の侵入を顧慮しないで済む利点がある。
【図面の簡単な説明】
【図１】本発明の装置を示す部分的縦断側面図である。
【図２】図１の装置の正面図である。
【図３】図１の装置におけるカバーの斜面図である。
【図４】図１の装置におけるカバーを装着する過程を示す部分的縦断側面図である。
【図５】本発明の他の実施形態を示す部分的縦断側面図である。
【図６】従来の装置を示す正面図である。
【図７】図５の装置の部分的縦断側面図である。
【符号の説明】
１ベース
２開放部
３カバー
４雌ネジ部
５ネジ
６座面部
６ａ切欠
６ｂ受面
７開通部[0001]
BACKGROUND OF THE INVENTION
In the present invention, the cover can be detachably attached to the open part of the base of the equipment housing by tightening the head screw, and the cover can be removed with the screw loosened moderately. The present invention relates to a cover mounting device for a type of equipment housing, and is applicable to electrical equipment housings, furniture housings, machine housings, transportation housings, and other various housings.
[0002]
[Prior art]
As a conventional cover attaching device of this type, for example, as shown in FIGS. 6 and 7, a cover C is detachably attached to a front opening B of a box-shaped base A with a head screw D, and the cover C is attached to the cover C. Is formed with a so-called daruma-shaped hole E, a female screw part F is formed in the base A, and the cover C is attached to the female screw part F with the headed screw D screwed partway. After contacting the opening B of the base A so that the head of the screw D passes through the large diameter part in the hole E, slide so that the screw D corresponds to the small diameter part in the hole E, and then tighten the screw D There is a model that is fixed.
[0003]
[Problems to be solved by the invention]
According to the above-described conventional apparatus, after the cover C is attached, not only the inside of the base A can be seen from the large diameter portion of the daruma-shaped hole E, but also foreign substances, dust, insects, etc. can easily enter from the outside. In addition, since the head of the screw D protrudes from the front part of the cover C, there is a disadvantage that it is inconvenient to superimpose and poor in appearance, and the head of the screw D is included when displaying other external dimensions. There are disadvantages such as having to display in large dimensions.
[0004]
As a measure for preventing the inside of the base A from being seen, it is conceivable to provide a plate-like blindfold G on a part of the base A corresponding to the large diameter portion of the hole E as shown by a chain line in FIG. When such a blindfold G is provided integrally with the base A by plastic molding, there is a disadvantage that the molding die becomes extremely complicated, and when it is provided separately, the structure is complicated and assembly is complicated.
[0005]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cover mounting device for a device housing of a type in which a cover can be removed with a screw loosened, and the screw does not protrude from the front portion of the cover under a simple configuration. An object of the present invention is to provide a cover mounting device having a structure that is difficult for foreign matter, dust, insects and the like to enter.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention attaches the cover (3) to the opening (2) of the base (1) in a detachable manner by tightening the head screw (5). In a device housing of a type that allows the cover (3) to be removed under moderately loosened condition, a female screw portion (inside the opening (2) of the base (1) ( 4) and a seat surface portion (6) provided in a state of being substantially vertically depressed from the outer surface of the cover main body portion at a position corresponding to the female screw portion (4) of the cover (3), and the seat surface portion (6) includes a receiving surface (6b) that comes into contact with the head of the screw (5), a side wall extending substantially perpendicularly from the outer surface of the cover main body to the periphery of the receiving surface (6b), and the receiving surface (6b) A notch (6a) that extends in the cover mounting direction from the approximate center of the screw and has a width that is slightly larger than the shaft diameter of the screw (5) And an opening portion (7) formed on the side wall of the seat surface portion (6) continuously to the notch (6a) and capable of passing the vicinity of the head of the screw (5) from the side. When the cover is mounted, a part of the side of the head of the screw (5) protrudes from the receiving surface (6b) and enters the opening (7), so that the opening (7) It is characterized by the fact that it is designed to block . With such a configuration, the head of the screw does not protrude from the cover front portion, and the cover can be slid and detached while passing the vicinity of the head of the screw through the opening portion on the side of the seat surface portion, There is no need to drill a daruma-shaped large hole.
[0007]
Note that at least a part of the opening portion may be constituted by a recess formed on the inner surface of the cover main body.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention apparatus will be described in detail with reference to the drawings.
[0009]
For example, as shown in FIG. 1 and FIG. 2, as a device case to be applied, a plate-like cover 3 is detachably attached to a release portion 2 in a box-shaped base 1 whose front entire surface is open. The base 1 is provided with a female screw portion 4 for mounting by embedding the female screw 4b in the boss 4a. On the other hand, the cover 3 has a head screw 5 at a position corresponding to the female screw portion 4. A type is adopted in which a seat surface portion 6 is provided in contact with the head, and the cover 3 is put on the open portion 2 of the base 1 and is fastened and fixed with screws 5.
[0010]
As a special configuration of the present invention for the above-mentioned type of device housing, for example, as shown in FIGS. 1 to 3, a female screw portion 4 is provided at an inward position closer to the bottom than the opening portion 2, and the cover 3 has A receiving surface 6b that contacts the head of the screw 5, a side wall that extends substantially perpendicularly from the periphery of the receiving surface 6b to the outer surface of the cover main body, and a screw 5 that extends from the approximate center of the receiving surface 6b to the side wall in the cover attaching / detaching direction. of the seat surface portion 6 having a notch 6a having a slightly larger width than the shaft diameter, provided with in a state of being recessed from the cover main body portion, one side of the seating surface portion 6 in the (downward in the drawing), the screw 5 The opening part 7 which can let the head vicinity pass is formed. As can be clearly understood from FIGS. 1 and 2, when the cover is mounted, a part of the side of the head of the screw 5 protrudes from the receiving surface 6 b and enters the opening 7, so that the head of the screw 5 is opened. Therefore, the inside of the housing can be almost completely shielded when the cover is attached.
[0011]
Based on the above configuration, the cover 3 is in a state where the side portion near the opening portion 7 corresponds to the head of the screw 5 while the screw 5 is screwed partway into the female screw portion 4 in the base 1 as shown in FIG. Originally, after contacting the open portion 2 of the base 1, the seat surface portion 6 is slid and mounted so as to correspond to the head of the screw 5, and then the screw 5 is tightened and fixed. When the cover 3 is removed, the cover 3 may be slid in the direction opposite to that in the case where the cover 3 is mounted after the screws 5 are loosened moderately.
[0012]
As for the depth of the seat surface portion 6, it is important to select a dimension including the plate thickness of the cover 3, the height of the head of the screw 5, and the tightening allowance of the screw 5, as shown in FIG. Further, by providing the concave portion 8 on the back surface of the cover 3 adjacent to the opening portion 7, the depth of the seat surface portion 6 can be formed shallow.
[0013]
For the U-shaped seat surface portion 6, it is desirable to select a low U- shaped height within a range that does not hinder the driver's operation with respect to the screw 5, thereby minimizing the communication gap inside and outside the base 1. Can be limited. Further, the seat surface portion 6 may be formed in various shapes without being limited to the U shape.
[0014]
【The invention's effect】
As described above, according to the present invention, the seat surface portion 6 with which the head portion of the screw 5 contacts is provided in a recessed state in a substantially vertical direction from the outer surface of the cover main body portion , and the screw 5 is provided on the side of the seat surface portion 6. Since the opening 7 that allows the head to pass to the side is provided, the head of the screw 5 does not protrude from the front portion of the cover 3 with a remarkably simple structure. Since there is no need to drill a large-diameter hole such as a daruma-shaped hole, there is an advantage that the inside is well-viewed and the intrusion of foreign matter, dust, pests, etc. can be avoided.
[Brief description of the drawings]
FIG. 1 is a partial longitudinal side view of an apparatus of the present invention.
FIG. 2 is a front view of the apparatus of FIG.
FIG. 3 is a perspective view of a cover in the apparatus of FIG. 1;
4 is a partial longitudinal side view showing a process of attaching a cover in the apparatus of FIG. 1; FIG.
FIG. 5 is a partially longitudinal side view showing another embodiment of the present invention.
FIG. 6 is a front view showing a conventional apparatus.
7 is a partial longitudinal side view of the apparatus of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 2 Opening part 3 Cover 4 Female thread part 5 Screw 6 Seat surface part 6a Notch 6b Reception surface 7 Opening part

Claims

ベース（１）の開放部（２）にカバー（３）を有頭ネジ（５）の締め付けにより着脱自在に取り付けるようにするほか、ネジ（５）を適度に緩めた状態のもとにカバー（３）を取り外すことができるようにした型式の機器筐体において、
ベース（１）の開放部（２）よりも内方に設けられた雌ネジ部（４）と、
カバー（３）の前記雌ネジ部（４）に対応する位置にカバー主体部の外面から略垂直に陥没した状態で設けられた座面部（６）とを有し、
前記座面部（６）は、
ネジ（５）の頭部に対接する受面（６ｂ）と、
カバー主体部の外面から該受面（６ｂ）の周囲まで略垂直に延びる側壁と、
該受面（６ｂ）の略中央からカバー装着方向に延び、ネジ（５）の軸径よりも少し大きい幅を持つ切欠（６ａ）とを備えており、
さらに、前記切欠（６ａ）に連続して座面部（６）の前記側壁に形成され、ネジ（５）の頭部付近を側方から通過させることができる開通部（７）を有し、
カバー装着時に、ネジ（５）の頭部の側方の一部が前記受面（６ｂ）から食み出して前記開通部（７）に入り込むことにより、該開通部（７）を塞ぐようになっていることを特徴とする機器筐体におけるカバー取付装置。The cover (3) is detachably attached to the open part (2) of the base (1) by tightening the head screw (5), and the cover (5) is loosened moderately. 3) In the type of equipment housing that can be removed,
A female screw part (4) provided inward of the open part (2) of the base (1),
A seat surface portion (6) provided in a state of being substantially vertically depressed from the outer surface of the cover main body portion at a position corresponding to the female screw portion (4) of the cover (3),
The seat portion (6)
A receiving surface (6b) that contacts the head of the screw (5);
A side wall extending substantially perpendicularly from the outer surface of the cover main body to the periphery of the receiving surface (6b);
A notch (6a) extending in a cover mounting direction from the substantially center of the receiving surface (6b) and having a width slightly larger than the shaft diameter of the screw (5),
Furthermore, the formed in the side wall of the cutout seat surface portion (6) in succession (6a), have a threaded opening portion near the head can be passed from the side of (5) (7),
When the cover is attached, a part of the side of the head of the screw (5) protrudes from the receiving surface (6b) and enters the opening (7) so as to block the opening (7). is it possible that the cover mounting device in an equipment casing, wherein.

前記カバー（３）の裏面に前記開通部（７）に連通して設けられた凹部（８）を有する請求項１に記載のカバー取付装置。The cover mounting device according to claim 1, further comprising a recess (8) provided on the back surface of the cover (3) so as to communicate with the opening portion (7) .