JP2022009233A

JP2022009233A - cover

Info

Publication number: JP2022009233A
Application number: JP2021170786A
Authority: JP
Inventors: 一旗戸田; Kazuki Toda
Original assignee: Sansha Electric Manufacturing Co Ltd
Current assignee: Sansha Electric Manufacturing Co Ltd
Priority date: 2017-09-25
Filing date: 2021-10-19
Publication date: 2022-01-14
Anticipated expiration: 2037-09-25
Also published as: JP7161593B2

Abstract

PROBLEM TO BE SOLVED: To provide a cover which can be mounted to any one of vent holes which are formed on walls having at least two kinds of thicknesses, without backlash.

SOLUTION: A cover comprises: a cover body which is mounted to a vent hole formed on a wall and includes a frame part inserted into the vent hole and a beam part provided within a region enclosed by the frame part; and an engage part which is provided in a recess formed in the frame part, and engaged with the wall around the vent hole when mounting the cover body to the vent hole. The engage part includes: a bent portion which is held by the beam part exposed from the recess; an abutment portion which is provided in the bent portion and abuts from the outside on the wall around the vent hole; and a first claw portion and a second claw portion which are provided at the bent portion and hold the wall around the vent hole from the inside between the claw portion and the abutment portion. The first claw portion and the second claw portion are used selectively in accordance with a thickness of the wall, and connected via the bent portion and the abutment portion.

SELECTED DRAWING: Figure 7

Description

本発明は、通気口にカバーを取り付ける技術に関する。 The present invention relates to a technique for attaching a cover to a vent.

電気機器には、例えば筐体内に格納された各種電子部品を冷却するために、筐体の壁に通気口が形成されたものが多く存在する。この様な通気口には、水や埃等の異物が筐体内に簡単に入り込んでしまうことを防止するべく、ルーバー等のカバーが取り付けられる。 Many electrical devices have vents formed on the walls of the housing, for example, in order to cool various electronic components stored in the housing. A cover such as a louver is attached to such a vent to prevent foreign matter such as water or dust from easily entering the housing.

カバーには、通気口の周囲の壁に外側から当接する周縁部と、当該壁の内側から当接部に対峙する爪部と、を有したものが存在する（例えば、特許文献１参照）。そして、周縁部と爪部との間の距離が壁の厚さに等しく、通気口へのカバーの取付け状態において壁がカバーの周縁部と爪部との間に挟まれる様に、周縁部に対する爪部の位置が設定されている。よって、通気口にカバーを取り付けたとき、周縁部と爪部との間に壁が隙間なく介在し、その結果として、カバーがガタツキなく取り付けられる。 Some covers have a peripheral edge portion that comes into contact with the wall around the vent from the outside and a claw portion that faces the abutment portion from the inside of the wall (see, for example, Patent Document 1). Then, the distance between the peripheral edge portion and the claw portion is equal to the thickness of the wall, and the wall is sandwiched between the peripheral edge portion and the claw portion of the cover in the state where the cover is attached to the vent. The position of the claw is set. Therefore, when the cover is attached to the vent, the wall is interposed between the peripheral edge portion and the claw portion without a gap, and as a result, the cover is attached without rattling.

特開２００６－９７９４５号公報Japanese Unexamined Patent Publication No. 2006-97945

しかしながら、従来の上記カバーは、周縁部と爪部との間の距離が、通気口の周囲の壁の厚さによって規定されるため、その距離よりも厚さが大きい壁に形成された通気口には取り付けることができなかった。このため、壁の厚さが変わる毎に、周縁部と爪部との間の距離を変更する必要があり、従って、カバー自体を作り直す必要があった。 However, in the conventional cover, since the distance between the peripheral edge and the claw portion is defined by the thickness of the wall around the vent, the vent formed in the wall having a thickness larger than the distance. Could not be attached to. For this reason, it was necessary to change the distance between the peripheral portion and the claw portion each time the thickness of the wall changed, and therefore it was necessary to remake the cover itself.

そこで本発明の目的は、少なくとも２種類の厚さの壁に形成された通気口の何れにもガタツキなく取り付けることが可能なカバーを提供することである。 Therefore, an object of the present invention is to provide a cover that can be attached to any of the vents formed in walls having at least two thicknesses without rattling.

本発明に係るカバーは、壁に形成された通気口に取り付けられ、通気口に挿入される枠部及び枠部で囲まれた領域内に設けられる梁部を有するカバー本体と、枠部に形成された凹部に設けられ、通気口へのカバー本体の取付け時に、当該通気口の周囲の壁に係合する係合部と、を備える。係合部は、凹部から露出した梁部に保持されている撓曲部と、撓曲部に設けられ、通気口の周囲の壁に外側から当接する当接部と、撓曲部に設けられ、通気口の周囲の壁を当接部との間に内側から挟む第１爪部及び第２爪部と、を有する。そして、第１爪部と第２爪部とは、壁の厚さに応じて選択的に用いられ、撓曲部及び当接部を介して連結されている。 The cover according to the present invention is attached to a vent formed on a wall, and is formed on a frame portion inserted into the vent and a cover main body having a beam portion provided in an area surrounded by the frame portion and a frame portion. It is provided in the recessed portion and includes an engaging portion that engages with the wall around the vent when the cover body is attached to the vent. The engaging portion is provided on the flexure portion held by the beam portion exposed from the recess, the abutting portion provided on the flexure portion and in contact with the wall around the vent from the outside, and the flexure portion. It has a first claw portion and a second claw portion that sandwich the wall around the vent from the inside between the abutting portion and the abutting portion. The first claw portion and the second claw portion are selectively used according to the thickness of the wall, and are connected via the flexure portion and the contact portion.

上記カバーによれば、通気口の周囲の壁の厚さに応じて、第１爪部と当接部との間に壁を介在させるか、又は、第２爪部と当接部との間に壁を介在させるか、を選択することができる。また、撓曲部は、凹部に設けられているため、枠部からの束縛を受けずに撓曲することができる。これにより、通気口にカバーを取り付けるとき、撓曲部が撓むことで、第１爪部と第２爪部とは、カバーが通気口を通過することができる位置まで移動する。その結果として、壁に係合部が係合する位置までカバーを挿入することが可能になる。従って、少なくとも２種類の厚さの壁に形成された通気口の何れに対しても、カバーをガタツキなく取り付けることが可能になる。 According to the cover, depending on the thickness of the wall around the vent, a wall may be interposed between the first claw portion and the abutting portion, or between the second claw portion and the abutting portion. You can choose to have a wall in between. Further, since the flexure portion is provided in the recess, the flexure portion can be flexed without being bound by the frame portion. As a result, when the cover is attached to the vent, the flexure portion bends, so that the first claw portion and the second claw portion move to a position where the cover can pass through the vent. As a result, it becomes possible to insert the cover to the position where the engaging portion engages with the wall. Therefore, the cover can be attached to any of the vents formed in the wall having at least two thicknesses without rattling.

本発明に係るカバーによれば、少なくとも２種類の厚さの壁に形成された通気口の何れにも、ガタツキなく取り付けることが可能になる。 According to the cover according to the present invention, it is possible to attach the cover to any of the vents formed in the wall having at least two thicknesses without rattling.

実施形態に係る電気機器を正面視した概念図である。It is a conceptual diagram which looked at the electric apparatus which concerns on embodiment. カバーを示した（Ａ）正面図、（Ｂ）上面図、及び（Ｃ）下面図である。It is (A) front view, (B) top view, and (C) bottom view which showed the cover. カバーを示した背面図である。It is a rear view which showed the cover. （Ａ）図２（Ｂ）に示されたIVA領域の拡大図、及び（Ｂ）図３に示されたIVB領域の拡大図である。(A) is an enlarged view of the IVA region shown in FIG. 2 (B), and (B) is an enlarged view of the IVB region shown in FIG. （Ａ）図２（Ａ）に示されたVA－VA線での断面図、及び（Ｂ）図５（Ａ）に示されたVB領域の拡大図である。(A) is a cross-sectional view taken along the line VA-VA shown in FIG. 2 (A), and (B) is an enlarged view of the VB region shown in FIG. 5 (A). カバーの上部を示した斜視図である。It is a perspective view which showed the upper part of a cover. （Ａ）（Ｂ）異なる２種類の厚さの壁に形成された通気口へのカバーの取付け状態をそれぞれ示した斜視図である。(A) (B) It is a perspective view which showed the attachment state of the cover to the vent formed in the wall of two different thicknesses.

図１は、実施形態に係る電気機器を正面視した概念図である。図１に示される様に、電気機器は、通気口１１が設けられた筐体１と、通気口１１に取り付けられるカバー２と、を備える。一例として、電気機器は、メッキ処理装置等に用いられる電源装置であり、筐体１の内部に電源回路（不図示）が構築されている。電源回路は、平滑回路やコンバータ回路等、冷却を要する電子部品（スイッチング素子等）が組み込まれた回路を含んでいる。尚、以下に説明する電気機器の各部構成は、電源装置に限らず、通気口１１を有する様々な電気機器に適用することができる。 FIG. 1 is a conceptual diagram of an electric device according to an embodiment as viewed from the front. As shown in FIG. 1, the electric device includes a housing 1 provided with a vent 11 and a cover 2 attached to the vent 11. As an example, an electric device is a power supply device used for a plating processing device or the like, and a power supply circuit (not shown) is constructed inside the housing 1. The power supply circuit includes a circuit in which electronic components (switching elements, etc.) that require cooling, such as a smoothing circuit and a converter circuit, are incorporated. The configuration of each part of the electric device described below can be applied not only to the power supply device but also to various electric devices having the vent 11.

筐体１は、箱型を呈した外壁の一部に、通気口１１が形成された壁１０Ａを有する。本実施形態では、壁１０Ａは前壁であり、通気口１１は、筐体１内に格納された各種電子部品を冷却するための冷却風を通す部分である。尚、通気口１１の用途は、電子部品等の冷却に限らず、筐体１の内部と外部とを連通させることを要する様々な用途に適宜変更することができる。又、通気口１１が形成される壁１０Ａは、前壁に限らず、用途等に応じて別の壁（後壁、側壁、天壁、底壁等）に適宜変更することができる。 The housing 1 has a wall 10A in which a vent 11 is formed in a part of a box-shaped outer wall. In the present embodiment, the wall 10A is a front wall, and the vent 11 is a portion through which cooling air for cooling various electronic components stored in the housing 1 is passed. The use of the vent 11 is not limited to cooling electronic parts and the like, and can be appropriately changed to various uses that require communication between the inside and the outside of the housing 1. Further, the wall 10A on which the ventilation holes 11 are formed is not limited to the front wall, and can be appropriately changed to another wall (rear wall, side wall, top wall, bottom wall, etc.) depending on the intended use.

通気口１１は、後述するカバー２の枠部２１１を挿入することが可能な形状を呈している。本実施形態では、通気口１１は、枠部２１１の形状に対応させて、四角形状に形成されている。又、後述する通過部１２及び切欠１３を除いて、左右対称且つ上下対称（或いは、１８０°回転対称）に形成されている。尚、通過部１２及び切欠１３（図１に示されたIA領域及びIB領域の拡大図参照）については、後述する。 The vent 11 has a shape into which the frame portion 211 of the cover 2, which will be described later, can be inserted. In the present embodiment, the vent 11 is formed in a rectangular shape corresponding to the shape of the frame portion 211. Further, except for the passing portion 12 and the notch 13, which will be described later, the formation is symmetrical and vertically symmetrical (or 180 ° rotationally symmetric). The passing portion 12 and the notch 13 (see the enlarged view of the IA region and the IB region shown in FIG. 1) will be described later.

図２（Ａ）～（Ｃ）及び図３はそれぞれ、カバー２を示した正面図、上面図、下面図、及び背面図である。図４（Ａ）は、図２（Ｂ）に示されたIVA領域の拡大図であり、図４（Ｂ）は、図３に示されたIVB領域の拡大図である。図５（Ａ）は、図２（Ａ）に示されたVA－VA線での断面図であり、図５（Ｂ）は、図５（Ａ）に示されたVB領域の拡大図である。図６は、カバー２の上部を示した斜視図である。これらの図に示される様に、カバー２は、カバー本体２１と、係合部２２と、を備える。 2 (A) to 2 (C) and FIG. 3 are a front view, a top view, a bottom view, and a rear view showing the cover 2, respectively. 4 (A) is an enlarged view of the IVA region shown in FIG. 2 (B), and FIG. 4 (B) is an enlarged view of the IVB region shown in FIG. 5 (A) is a cross-sectional view taken along the line VA-VA shown in FIG. 2 (A), and FIG. 5 (B) is an enlarged view of the VB region shown in FIG. 5 (A). .. FIG. 6 is a perspective view showing the upper part of the cover 2. As shown in these figures, the cover 2 includes a cover body 21 and an engaging portion 22.

図３に示される様に、カバー本体２１は、通気口１１に挿入される枠部２１１と、当該枠部２１１の外周に形成された鍔部２１２と、枠部２１１で囲まれた領域内に並んだ複数の羽板２１３と、梁部２１４と、から構成されている。 As shown in FIG. 3, the cover main body 21 is located in a region surrounded by a frame portion 211 inserted into the ventilation port 11, a flange portion 212 formed on the outer periphery of the frame portion 211, and a frame portion 211. It is composed of a plurality of wing plates 213 arranged side by side and a beam portion 214.

枠部２１１は、上縁部２１Ａと、下縁部２１Ｂと、左右の側縁部２１Ｃと、から構成されている。そして、上縁部２１Ａには、凹部２１Ｄが左右に１つずつ設けられ、下縁部２１Ｂにも、凹部２１Ｄが左右に１つずつ設けられている（図３参照）。具体的には、凹部２１Ｄは以下の様に構成されている。尚、本実施形態では、枠部２１１は、後述する突起部２３（図４（Ｂ）参照）を除いて、上下対称且つ左右対称（或いは、１８０°回転対称）に形成されている。 The frame portion 211 is composed of an upper edge portion 21A, a lower edge portion 21B, and left and right side edge portions 21C. The upper edge portion 21A is provided with one recess 21D on each side, and the lower edge portion 21B is also provided with one recess 21D on each side (see FIG. 3). Specifically, the recess 21D is configured as follows. In the present embodiment, the frame portion 211 is formed vertically and horizontally symmetrically (or 180 ° rotationally symmetric) except for the protrusion 23 (see FIG. 4B) which will be described later.

先ず、上縁部２１Ａと、当該上縁部２１Ａに最も近い羽板２１３と、の間に、当該上縁部２１Ａと略並行に梁部２１４が設けられている（図３参照）。具体的には、梁部２１４は、左右の側縁部２１Ｃ間を横方向に延びると共に、上縁部２１Ａの直下に配されている。より具体的に、上縁部２１Ａと梁部２１４とは、それらの左右両端部どうしが、左右の側縁部２１Ｃを介して互いに連結されている。同様に、下縁部２１Ｂと、当該下縁部２１Ｂに最も近い羽板２１３と、の間にも、梁部２１４が設けられている。 First, a beam portion 214 is provided between the upper edge portion 21A and the blade plate 213 closest to the upper edge portion 21A in substantially parallel to the upper edge portion 21A (see FIG. 3). Specifically, the beam portion 214 extends laterally between the left and right side edge portions 21C and is arranged directly below the upper edge portion 21A. More specifically, the upper edge portion 21A and the beam portion 214 are connected to each other by their left and right end portions via the left and right side edge portions 21C. Similarly, a beam portion 214 is also provided between the lower edge portion 21B and the wing plate 213 closest to the lower edge portion 21B.

そして、上縁部２１Ａに設けられた各凹部２１Ｄは、当該上縁部２１Ａの一部を切り欠くことにより、直下に配された梁部２１４の上面２１４ａの一部を露出させることで形成されている（図４（Ｂ）及び図６参照）。下縁部２１Ｂに設けられた各凹部２１Ｄも、同様に形成されている。 Each recess 21D provided in the upper edge portion 21A is formed by cutting out a part of the upper edge portion 21A to expose a part of the upper surface 214a of the beam portion 214 arranged directly below. (See FIGS. 4 (B) and 6). Each recess 21D provided in the lower edge portion 21B is also formed in the same manner.

鍔部２１２は、通気口１１に枠部２１１が挿入されたときに、当該通気口１１から僅かにはみ出して周囲の壁１０Ａに前方外側から当接する様に形成されている。又、鍔部２１２は、後述する通過部１２及び突起部２３を覆い隠す様に形成されている（図７（Ａ）及び（Ｂ）参照）。 The flange portion 212 is formed so as to slightly protrude from the ventilation port 11 and abut on the surrounding wall 10A from the front outside when the frame portion 211 is inserted into the ventilation port 11. Further, the flange portion 212 is formed so as to cover the passing portion 12 and the protrusion portion 23, which will be described later (see FIGS. 7A and 7B).

本実施形態では、通気口１１へのカバー２の取付け時に、枠部２１１が通気口１１に挿入されることにより、カバー２は、上下左右の方向についての位置が決められる。又、通気口１１の周囲の壁１０Ａに対して外側から鍔部２１２が当接することにより、カバー２は、通気口１１への取付方向（通気口１１を通じて外側から内側へ向かう奥行方向）についての位置が決められる。この様な位置決め部としての鍔部２１２の機能は、後述する係合部２２の当接部２２２が持つ機能と同じである。よって、特許請求の範囲に記載の「当接部」には、後述する当接部２２２に限らず、鍔部２１２が含まれてもよい。 In the present embodiment, when the cover 2 is attached to the ventilation port 11, the frame portion 211 is inserted into the ventilation port 11, so that the position of the cover 2 is determined in the vertical and horizontal directions. Further, when the flange portion 212 comes into contact with the wall 10A around the vent 11 from the outside, the cover 2 is attached to the vent 11 in the mounting direction (depth direction from the outside to the inside through the vent 11). The position is decided. The function of the flange portion 212 as such a positioning portion is the same as the function of the contact portion 222 of the engaging portion 22, which will be described later. Therefore, the "contact portion" described in the claims may include not only the contact portion 222 described later but also the flange portion 212.

複数の羽板２１３は、枠部２１１で囲まれた領域において、枠部２１１の左右の側縁部２１Ｃ間を横方向に延びている。又、複数の羽板２１３は、カバー２が通気口１１に取り付けられたときに、羽板２１３のそれぞれの向き（具体的には、空気を通過させる向き）が、通気口１１が形成されている壁１０Ａに垂直な方向に対して同じ角度で傾く様に、羽板２１３は並べられている。 The plurality of feather plates 213 extend laterally between the left and right side edge portions 21C of the frame portion 211 in the region surrounded by the frame portion 211. Further, in the plurality of blade plates 213, when the cover 2 is attached to the ventilation port 11, the ventilation holes 11 are formed in each direction (specifically, the direction in which air passes) of the blade plates 213. The wing plates 213 are arranged so as to be tilted at the same angle with respect to the direction perpendicular to the existing wall 10A.

通気口１１への取付け状態の一例として、カバー２は、上述した羽板２１３のそれぞれの向きが壁１０Ａの内側から外側に向けて斜め下方となる様に通気口１１に取り付けられる（図５（Ａ）参照）。この様に取り付けられたカバー２によれば、当該カバー２に水が降りかかった場合でも、羽板２１３に付着した水は、自身の重力で羽板２１３から筐体１の外側へ滑り落ち、その結果として、通気口１１からの水の浸入が防止される。この様に、カバー２は、通気口１１への取付けに関する方向性を有する。 As an example of the state of attachment to the vent 11, the cover 2 is attached to the vent 11 so that the respective orientations of the blade plates 213 described above are diagonally downward from the inside to the outside of the wall 10A (FIG. 5 (FIG. 5). A) See). According to the cover 2 attached in this way, even when water falls on the cover 2, the water adhering to the wing plate 213 slides down from the wing plate 213 to the outside of the housing 1 by its own gravity. As a result, the ingress of water from the vent 11 is prevented. As described above, the cover 2 has a direction for attachment to the vent 11.

このため、例えば上下を逆にしてカバー２が通気口１１に取り付けられたとすれば、カバー２が有する機能（本実施形態では、通気口１１からの水の浸入を防止する機能）が低下する。そこで、本実施形態の電気機器には、カバー２の向きを正しく規制するための規制構造が設けられている。 Therefore, for example, if the cover 2 is attached to the vent 11 upside down, the function of the cover 2 (in the present embodiment, the function of preventing water from entering through the vent 11) is reduced. Therefore, the electric device of the present embodiment is provided with a regulation structure for correctly regulating the orientation of the cover 2.

具体的には、図４（Ａ）、図４（Ｂ）、及び図６に示される様に、カバー２は、枠部２１１の外周面（特許請求の範囲に記載の「カバー本体の周面」に相当）に設けられた突起部２３を更に備える。更に、通気口１１の周囲の壁１０Ａに、通気口１１へのカバー２の取付け時に突起部２３を通す通過部１２が設けられている（図１に示されたIA領域の拡大図参照）。そして、通過部１２は、カバー２が正しい向きで通気口１１に取り付けられたときにのみ突起部２３が通過する様に配されている。本実施形態では、突起部２３は、枠部２１１の上縁部２１Ａの上面中央位置に配されている。又、通過部１２は、突起部２３の位置に対応させて、通気口１１の周囲の壁１０Ａの上辺中央位置に設けられている。 Specifically, as shown in FIGS. 4 (A), 4 (B), and 6, the cover 2 is the outer peripheral surface of the frame portion 211 (the peripheral surface of the cover body described in the claims). The protrusion 23 provided in the above) is further provided. Further, the wall 10A around the vent 11 is provided with a passage portion 12 through which the protrusion 23 is passed when the cover 2 is attached to the vent 11 (see the enlarged view of the IA region shown in FIG. 1). The passing portion 12 is arranged so that the protruding portion 23 passes only when the cover 2 is attached to the vent 11 in the correct orientation. In the present embodiment, the protrusion 23 is arranged at the center position of the upper surface of the upper edge 21A of the frame 211. Further, the passing portion 12 is provided at the center position of the upper side of the wall 10A around the vent 11 so as to correspond to the position of the protruding portion 23.

一例として、本実施形態では、通過部１２及び突起部２３は、カバー２の鍔部２１２によって覆い隠される様に構成される。これにより、通気口１１へのカバー２の取付け状態において、通過部１２及び突起部２３が外部から見えなくなり、電気機器の外観の美しさが損なわれない。他の例として、通過部１２及び突起部２３は、通気口１１へのカバー２の取付け状態において鍔部２１２からはみ出る様に構成されてもよい。これにより、ユーザは、カバー２が正しい向きで取り付けられていることを、外観から確認することが可能になる。 As an example, in the present embodiment, the passing portion 12 and the protruding portion 23 are configured to be covered by the flange portion 212 of the cover 2. As a result, in the state where the cover 2 is attached to the vent 11, the passing portion 12 and the protruding portion 23 are not visible from the outside, and the beauty of the appearance of the electric device is not impaired. As another example, the passing portion 12 and the protruding portion 23 may be configured to protrude from the flange portion 212 when the cover 2 is attached to the ventilation port 11. This allows the user to visually confirm that the cover 2 is mounted in the correct orientation.

係合部２２は、カバー本体２１に設けられており（図３参照）、通気口１１へのカバー２の取付け時に当該通気口１１の周囲の壁１０Ａに係合する（図７（Ａ）及び（Ｂ）参照）。本実施形態では、係合部２２は、カバー本体２１の枠部２１１の上縁部２１Ａにおいて左右に１つずつ設けられ、更に、カバー本体２１の枠部２１１の下縁部２１Ｂにも左右に１つずつ設けられている（図３参照）。具体的には、上縁部２１Ａ及び下縁部２１Ｂに設けられた各凹部２１Ｄ内に、係合部２２が設けられている。即ち、係合部２２は、カバー本体２１において互いに反対側に位置する２つの縁部（ここでは、上縁部２１Ａと下縁部２１Ｂ）のそれぞれに設けられている。 The engaging portion 22 is provided on the cover main body 21 (see FIG. 3), and engages with the wall 10A around the vent 11 when the cover 2 is attached to the vent 11 (FIG. 7 (A) and FIG. 3). (B)). In the present embodiment, the engaging portions 22 are provided on the left and right sides of the upper edge portion 21A of the frame portion 211 of the cover main body 21, and further on the left and right sides of the lower edge portion 21B of the frame portion 211 of the cover main body 21. They are provided one by one (see FIG. 3). Specifically, the engaging portion 22 is provided in each recess 21D provided in the upper edge portion 21A and the lower edge portion 21B. That is, the engaging portion 22 is provided on each of the two edge portions (here, the upper edge portion 21A and the lower edge portion 21B) located on opposite sides of the cover main body 21.

尚、枠部２１１の各縁部に設けられる係合部２２の数は、２つに限らず、１つであってもよいし、３つ以上であってもよい。又、異なる縁部のそれぞれに設けられる係合部２２の数は、同じである場合に限らず、互いに異なっていてもよい。更に、カバー本体２１において係合部２２が設けられる縁部の組合せは、上縁部２１Ａ及び下縁部２１Ｂという組合せに限らず、左右の側縁部２１Ｃという組合せであってもよい。尚、係合部２２が設けられる縁部の組合せは、対向した縁部という組合せであることが好ましい。 The number of engaging portions 22 provided on each edge portion of the frame portion 211 is not limited to two, and may be one or three or more. Further, the number of engaging portions 22 provided on each of the different edge portions is not limited to the same, and may be different from each other. Further, the combination of the edge portions where the engaging portion 22 is provided in the cover main body 21 is not limited to the combination of the upper edge portion 21A and the lower edge portion 21B, and may be a combination of the left and right side edge portions 21C. The combination of the edge portions provided with the engaging portions 22 is preferably a combination of facing edge portions.

以下、正面から見て右上の係合部２２（上縁部２１Ａの右側に設けられた係合部２２）について、図４（Ａ）、図４（Ｂ）、及び図５（Ｂ）を用いて、具体的に説明する。尚、他の係合部２２については、右上の係合部２２と構成が同じであるので、説明を省略する。 Hereinafter, with respect to the engaging portion 22 (engaging portion 22 provided on the right side of the upper edge portion 21A) on the upper right when viewed from the front, FIGS. 4 (A), 4 (B), and 5 (B) are used. I will explain in detail. Since the other engaging portions 22 have the same configuration as the engaging portions 22 on the upper right, the description thereof will be omitted.

具体的には、係合部２２は、凹部２１Ｄから露出した梁部２１４の上面２１４ａから上方背面側へ立ち上がり、正面側へ折り返される様に湾曲して延びた撓曲部２２１を有する。更に、係合部２２は、当接部２２２と、第１爪部２２３Ａと、第２爪部２２３Ｂと、を有し、これらが撓曲部２２１に設けられている。撓曲部２２１（図５（Ｂ）参照）は、当接部２２２が設けられた先端部２２１ａと、湾曲部２２１ｂと、中間部２２１ｃと、を含む。湾曲部２２１ｂは、通気口１１へのカバー２の取付け状態において、梁部２１４の上面２１４ａから奥行方向へ向けて斜め上方へ延び出ると共に先端部２２１ａへ（即ち、前方へ）向けて湾曲した部分である。中間部２２１ｃは、先端部２２１ａと湾曲部２２１ｂとを繋ぐ部分である。 Specifically, the engaging portion 22 has a flexure portion 221 that rises from the upper surface 214a of the beam portion 214 exposed from the recess 21D toward the upper back surface side and is curved and extended so as to be folded back toward the front surface side. Further, the engaging portion 22 has a contact portion 222, a first claw portion 223A, and a second claw portion 223B, which are provided in the flexure portion 221. The flexure portion 221 (see FIG. 5B) includes a tip portion 221a provided with a contact portion 222, a bending portion 221b, and an intermediate portion 221c. The curved portion 221b is a portion that extends diagonally upward from the upper surface 214a of the beam portion 214 in the depth direction and is curved toward the tip portion 221a (that is, forward) in the state where the cover 2 is attached to the vent 11. Is. The intermediate portion 221c is a portion connecting the tip portion 221a and the curved portion 221b.

撓曲部２２１は、凹部２１Ｄによって上縁部２１Ａから切り離された状態で、梁部２１４に保持されている（図４（Ｂ）参照）。従って、撓曲部２２１は、上縁部２１Ａからの束縛を受けずに、先端部２２１ａ又は中間部２２１ｃの上下動に応じて凹部２１Ｄ内で撓曲することが可能である。よって、先端部２２１ａ又は中間部２２１ｃが上方から押圧されたとき、撓曲部２２１が撓むことで、先端部２２１ａ及び中間部２２１ｃが梁部２１４側へ移動することが許容される。一方、先端部２２１ａ又は中間部２２１ｃが押圧から解放されたとき、撓曲部２２１の撓曲が解除され、先端部２２１ａ及び中間部２２１ｃは元の位置に戻る。 The flexure portion 221 is held by the beam portion 214 in a state of being separated from the upper edge portion 21A by the concave portion 21D (see FIG. 4B). Therefore, the flexure portion 221 can be flexed in the recess 21D in response to the vertical movement of the tip portion 221a or the intermediate portion 221c without being bound by the upper edge portion 21A. Therefore, when the tip portion 221a or the intermediate portion 221c is pressed from above, the flexure portion 221 bends, so that the tip portion 221a and the intermediate portion 221c are allowed to move toward the beam portion 214. On the other hand, when the tip portion 221a or the intermediate portion 221c is released from the pressing, the flexure of the flexure portion 221 is released, and the tip portion 221a and the intermediate portion 221c return to their original positions.

そして、中間部２２１ｃに、第１爪部２２３Ａ及び第２爪部２２３Ｂが設けられている。又、当接部２２２、第１爪部２２３Ａ、及び第２爪部２２３Ｂは何れも、枠部２１１の外周の位置（ここでは、上縁部２１Ａの高さ位置）から突き出ている（図５（Ｂ）参照）。即ち、当接部２２２、第１爪部２２３Ａ、及び第２爪部２２３Ｂは何れも、それらの高さが、通気口１１へのカバー２の取付け状態において通気口１１の周縁から壁１０Ａ側へはみ出る様に設定されている。即ち、カバー２の取付け状態において、当接部２２２が、壁１０Ａに対して外側から当接し、第１爪部２２３Ａ及び第２爪部２２３Ｂの何れかが、壁１０Ａに対して内側から当接することができる。 The intermediate portion 221c is provided with a first claw portion 223A and a second claw portion 223B. Further, the contact portion 222, the first claw portion 223A, and the second claw portion 223B all protrude from the position of the outer periphery of the frame portion 211 (here, the height position of the upper edge portion 21A) (FIG. 5). (B)). That is, the heights of the contact portion 222, the first claw portion 223A, and the second claw portion 223B are all from the peripheral edge of the ventilation port 11 to the wall 10A side in the state where the cover 2 is attached to the ventilation port 11. It is set to stick out. That is, in the mounted state of the cover 2, the contact portion 222 abuts on the wall 10A from the outside, and either the first claw portion 223A or the second claw portion 223B abuts on the wall 10A from the inside. be able to.

従って、通気口１１にカバー２を取り付けるとき、当該通気口１１からはみ出た第１爪部２２３Ａ又は第２爪部２２３Ｂが、通気口１１の周囲の壁１０Ａによって下方へ押される。そして、このとき撓曲部２２１が撓むことで、先端部２２１ａ及び中間部２２１ｃが梁部２１４側へ移動すると共に、第１爪部２２３Ａ及び第２爪部２２３Ｂが、通気口１１を通過することができる位置まで移動する。その結果として、通気口１１への取付けが完了する位置（即ち、壁１０Ａに係合部２２が係合する位置）までカバー２を挿入することが可能になる。 Therefore, when the cover 2 is attached to the vent 11, the first claw portion 223A or the second claw portion 223B protruding from the vent 11 is pushed downward by the wall 10A around the vent 11. At this time, the flexure portion 221 bends, so that the tip portion 221a and the intermediate portion 221c move toward the beam portion 214, and the first claw portion 223A and the second claw portion 223B pass through the vent 11. Move to a position where you can. As a result, the cover 2 can be inserted to the position where the attachment to the vent 11 is completed (that is, the position where the engaging portion 22 engages with the wall 10A).

通気口１１にカバー２が取り付けられたとき（即ち、取付け状態において）、当接部２２２は、通気口１１の周囲の壁１０Ａに外側から当接する（図７（Ａ）及び（Ｂ）参照）。又、第１爪部２２３Ａ及び第２爪部２２３Ｂは、壁１０Ａの厚さに応じて選択的に用いられ（図７（Ａ）及び（Ｂ）参照）、通気口１１の周囲の壁１０Ａを当接部２２２との間に内側から挟む。これにより、第１爪部２２３Ａ及び第２爪部２２３Ｂのうちの選択されたものと当接部２２２との間に通気口１１の周囲の壁１０Ａが介在し、その結果として、通気口１１の周囲の壁１０Ａに係合部２２が係合する。 When the cover 2 is attached to the vent 11 (that is, in the attached state), the contact portion 222 abuts on the wall 10A around the vent 11 from the outside (see FIGS. 7A and 7B). .. Further, the first claw portion 223A and the second claw portion 223B are selectively used according to the thickness of the wall 10A (see FIGS. 7A and 7B), and the wall 10A around the vent 11 is used. It is sandwiched from the inside between the contact portion 222 and the contact portion 222. As a result, the wall 10A around the vent 11 is interposed between the selected one of the first claw portion 223A and the second claw portion 223B and the contact portion 222, and as a result, the ventilation port 11 The engaging portion 22 engages with the surrounding wall 10A.

本実施形態では、第１爪部２２３Ａは、当接部２２２から後方へ距離Ｌ１（図４（Ａ）参照）だけ離れた位置に配されている。第２爪部２２３Ｂは、第１爪部２２３Ａの両側に１つずつ設けられており、何れも、当接部２２２から後方へ、距離Ｌ１より大きい距離Ｌ２（図４（Ａ）参照）だけ離れた位置に配されている。即ち、取付方向において、第２爪部２２３Ｂと当接部２２２との間の距離Ｌ２が、第１爪部２２３Ａと当接部２２２との間の距離Ｌ１より大きい。 In the present embodiment, the first claw portion 223A is arranged at a position separated rearward from the contact portion 222 by a distance L1 (see FIG. 4A). The second claw portion 223B is provided on both sides of the first claw portion 223A one by one, and both are separated from the contact portion 222 rearward by a distance L2 larger than the distance L1 (see FIG. 4A). It is arranged in the same position. That is, in the mounting direction, the distance L2 between the second claw portion 223B and the abutting portion 222 is larger than the distance L1 between the first claw portion 223A and the abutting portion 222.

具体的には、第１爪部２２３Ａの前端面及び第２爪部２２３Ｂの前端面には、前方斜め下方に傾斜したガイド面Ｇａ及びＧｂ（図５（Ｂ）参照。中間部２２１ｃの表面に対して垂直な面を含む）がそれぞれ形成されている。ガイド面Ｇａの前端には、当接部２２２から距離Ｌ１だけ離れた位置でほぼ垂直に降下した面が形成されており、当該面と当接部２２２の背面との間に凹状の第１係合位置Ｈａが形成されている。又、ガイド面Ｇｂの前端には、当接部２２２から距離Ｌ２（＞Ｌ１）だけ離れた位置でほぼ垂直に降下した面が形成されており、当該面と当接部２２２の背面との間に凹状の第２係合位置Ｈｂが形成されている。 Specifically, on the front end surface of the first claw portion 223A and the front end surface of the second claw portion 223B, the guide surfaces Ga and Gb inclined diagonally forward and downward (see FIG. 5B; on the surface of the intermediate portion 221c). (Including the plane perpendicular to the surface) is formed respectively. At the front end of the guide surface Ga, a surface that descends substantially vertically at a position separated from the contact portion 222 by a distance L1 is formed, and a concave first contact is formed between the surface and the back surface of the contact portion 222. The alignment Ha is formed. Further, at the front end of the guide surface Gb, a surface that descends substantially vertically at a position separated from the contact portion 222 by a distance L2 (> L1) is formed, and between the surface and the back surface of the contact portion 222. A concave second engaging position Hb is formed on the surface.

距離Ｌ１及びＬ２（Ｌ１＜Ｌ２）は、通気口１１が形成された壁１０Ａにおいて想定し得る２つの厚さＤ１及びＤ２（Ｄ１＜Ｄ２）にそれぞれ対応している。ここで、「対応」という用語には、次の様な取付け状態を得ることができる距離Ｌ１と厚さＤ１との関係が少なくとも含まれる。即ち、その関係によれば、厚さＤ１の壁１０Ａに形成された通気口１１にカバー２が取り付けられることで、通気口１１の周囲の壁１０Ａが、距離Ｌ１だけ離れた当接部２２２と第１爪部２２３Ａとの間に介在したときに、取付方向においてカバー２にガタツキが生じない、又は、ガタツキがあったとしても許容できる範囲内となる。距離Ｌ２と厚さＤ２との関係についても同様である。 The distances L1 and L2 (L1 <L2) correspond to two possible thicknesses D1 and D2 (D1 <D2) in the wall 10A on which the vent 11 is formed, respectively. Here, the term "correspondence" includes at least the relationship between the distance L1 and the thickness D1 that can obtain the following mounting state. That is, according to the relationship, by attaching the cover 2 to the vent 11 formed in the wall 10A having the thickness D1, the wall 10A around the vent 11 is separated from the abutting portion 222 by a distance L1. When intervening between the first claw portion 223A and the cover 2, the cover 2 does not rattle in the mounting direction, or even if there is rattling, it is within an acceptable range. The same applies to the relationship between the distance L2 and the thickness D2.

一例として、厚さＤ１は１ｍｍであり、これに対応させて距離Ｌ１が１．１ｍｍに設定される。又、厚さＤ２は１．６ｍｍであり、これに対応させて距離Ｌ２が１．７ｍｍに設定される。尚、厚さＤ１及びＤ２の寸法は、電気機器の種類等に応じて適宜変更することができる。又、距離Ｌ１及びＬ２の寸法は、ガタツキの許容範囲等に応じて適宜変更することができる。 As an example, the thickness D1 is 1 mm, and the distance L1 is set to 1.1 mm correspondingly. Further, the thickness D2 is 1.6 mm, and the distance L2 is set to 1.7 mm corresponding to this. The dimensions of the thicknesses D1 and D2 can be appropriately changed according to the type of electrical equipment and the like. Further, the dimensions of the distances L1 and L2 can be appropriately changed according to the allowable range of rattling and the like.

通気口１１の周囲の壁１０Ａが厚さＤ１（＜厚さＤ２）の壁（例えば、薄板）である場合、当該壁１０Ａは、距離Ｌ１だけ離れた第１爪部２２３Ａ（ガイド面Ｇａ）と当接部２２２との間に形成された第１係合位置Ｈａ（図５（Ｂ）参照）に配置され、これにより、当該第１係合位置Ｈａにて厚さＤ１の壁１０Ａに係合部２２が係合する（図７（Ａ）参照）。尚、図７（Ａ）は、厚さＤ１の壁１０Ａに形成された通気口１１へのカバー２の取付け状態を示した斜視図である。 When the wall 10A around the vent 11 is a wall having a thickness D1 (<thickness D2) (for example, a thin plate), the wall 10A is separated from the first claw portion 223A (guide surface Ga) separated by a distance L1. It is arranged at the first engagement position Ha (see FIG. 5B) formed between the contact portion 222 and thereby engages with the wall 10A having a thickness of D1 at the first engagement position Ha. The portion 22 engages (see FIG. 7A). FIG. 7A is a perspective view showing a state in which the cover 2 is attached to the vent 11 formed on the wall 10A having a thickness of D1.

一方、通気口１１の周囲の壁１０Ａが厚さＤ２の壁（例えば、厚板）である場合、当該壁１０Ａは、第１爪部２２３Ａと当接部２２２との間には収まらないため、距離Ｌ２だけ離れた第２爪部２２３Ｂ（ガイド面Ｇｂ）と当接部２２２との間に形成された第２係合位置Ｈｂ（図５（Ｂ）参照）に配置されるが、第２爪部２２３Ｂと当接部２２２との間に存在する第１爪部２２３Ａ（図５（Ｂ）参照。ガイド面Ｇａを含む）に壁１０Ａが衝突してしまうため、その衝突を回避するための切欠１３が壁１０Ａの上辺及び下辺に設けられている（図１に示されたIB領域の拡大図参照）。即ち、厚さＤ２の壁１０Ａには、第１爪部２２３Ａと対峙する箇所に切欠１３が設けられており、当該切欠１３は、厚さＤ２の壁１０Ａとの衝突から第１爪部２２３Ａを逃がす逃し穴として用いられる。これにより、第２係合位置Ｈｂにて厚さＤ２の壁１０Ａに係合部２２が係合する（図７（Ｂ）参照）。尚、図７（Ｂ）は、厚さＤ２の壁１０Ａに形成された通気口１１へのカバー２の取付け状態を示した斜視図である。 On the other hand, when the wall 10A around the vent 11 is a wall having a thickness D2 (for example, a thick plate), the wall 10A does not fit between the first claw portion 223A and the abutting portion 222. It is arranged at the second engaging position Hb (see FIG. 5B) formed between the second claw portion 223B (guide surface Gb) and the abutting portion 222 separated by a distance L2, but the second claw. Since the wall 10A collides with the first claw portion 223A (see FIG. 5B, including the guide surface Ga) existing between the portion 223B and the contact portion 222, a notch for avoiding the collision. 13 are provided on the upper and lower sides of the wall 10A (see the enlarged view of the IB region shown in FIG. 1). That is, the wall 10A having a thickness D2 is provided with a notch 13 at a position facing the first claw portion 223A, and the notch 13 provides the first claw portion 223A from a collision with the wall 10A having a thickness D2. It is used as an escape hole to escape. As a result, the engaging portion 22 engages with the wall 10A having a thickness of D2 at the second engaging position Hb (see FIG. 7B). FIG. 7B is a perspective view showing a state in which the cover 2 is attached to the vent 11 formed on the wall 10A having a thickness of D2.

次に、通気口１１にカバー２を取り付ける過程について、具体的に説明する。先ず、通過部１２と突起部２３とを目印として、カバー２の姿勢を、通過部１２に突起部２３を通すことができる正しい向き（本実施形態では上側に突起部２３が位置する向き）となる様に調整する。その後、その正しい向きを維持しつつカバー２を前傾にして、枠部２１１の下縁部２１Ｂに設けられた下側左右の係合部２２を壁１０Ａの下辺に係合させる。このとき、下側左右の各係合部２２に対して、壁１０Ａの下辺が、当該壁１０Ａの厚さに応じて選択される第１爪部２２３Ａ又は第２爪部２２３Ｂと当接部２２２との間に挟まれる様にして押し当てられる。 Next, the process of attaching the cover 2 to the vent 11 will be specifically described. First, using the passing portion 12 and the protruding portion 23 as marks, the posture of the cover 2 is set to the correct orientation in which the protruding portion 23 can be passed through the passing portion 12 (in the present embodiment, the orientation in which the protruding portion 23 is located on the upper side). Adjust so that it becomes. After that, the cover 2 is tilted forward while maintaining the correct orientation, and the lower left and right engaging portions 22 provided on the lower edge portion 21B of the frame portion 211 are engaged with the lower side of the wall 10A. At this time, for each of the lower left and right engaging portions 22, the lower side of the wall 10A is abutting portion 222 with the first claw portion 223A or the second claw portion 223B selected according to the thickness of the wall 10A. It is pressed so that it is sandwiched between and.

このとき、カバー２が上下逆向きの誤った向きで通気口１１に取り付けられそうになった場合、突起部２３が下側に位置し、従って、壁１０Ａの下辺に突起部２３が当接することになる。従って、カバー２の位置が、突起部２３の高さ分だけ通気口１１から上へずれる。そして、カバー２が、上へずれた状態で通気口１１に無理に押し込まれそうになると、誤って上に向けられた枠部２１１の下縁部２１Ｂの後端が壁１０Ａの上辺に衝突し、通気口１１への枠部２１１の挿入が阻止される。従って、カバー２が誤った向きのまま通気口１１に取り付けられることが防止される。 At this time, if the cover 2 is about to be attached to the vent 11 in the wrong direction upside down, the protrusion 23 is located on the lower side, and therefore the protrusion 23 abuts on the lower side of the wall 10A. become. Therefore, the position of the cover 2 is displaced upward from the vent 11 by the height of the protrusion 23. Then, when the cover 2 is about to be forcibly pushed into the vent 11 in a state of being displaced upward, the rear end of the lower edge portion 21B of the frame portion 211 that is erroneously turned upward collides with the upper side of the wall 10A. , The insertion of the frame portion 211 into the vent 11 is prevented. Therefore, it is prevented that the cover 2 is attached to the vent 11 in the wrong direction.

又、突起部２３及び通過部１２がそれぞれカバー２及び通気口１１の上側に設けられることにより、通気口１１へのカバー２の取付け時において、ユーザは、突起部２３及び通過部１２を視認し易くなり、その結果として、通気口１１にカバー２を正しい向きで取り付けることが容易になる。尚、突起部２３及び通過部１２のそれぞれの位置は、カバー２及び通気口１１の上側に限らず、適宜、変更することができる。 Further, since the protrusion 23 and the passage portion 12 are provided above the cover 2 and the ventilation port 11, respectively, the user can visually recognize the protrusion 23 and the passage portion 12 when the cover 2 is attached to the ventilation port 11. As a result, it becomes easier to attach the cover 2 to the vent 11 in the correct orientation. The positions of the protrusions 23 and the passages 12 are not limited to the upper sides of the cover 2 and the vent 11, and can be changed as appropriate.

上述した様にカバー２を正しい向きに調整し、下側の係合部２２を壁１０Ａの下辺に係合させた後、その係合位置を支点として、カバー２の上部を、通気口１１に押し込む方向に回転させる。そして、この回転により、壁１０Ａの上辺に設けられている通過部１２に突起部２３を通しつつ、通気口１１への枠部２１１の挿入を開始する（図７（Ａ）及び（Ｂ）参照）。 After adjusting the cover 2 in the correct direction as described above and engaging the lower engaging portion 22 with the lower side of the wall 10A, the upper part of the cover 2 is set to the vent 11 with the engaging position as a fulcrum. Rotate in the pushing direction. Then, by this rotation, the insertion of the frame portion 211 into the ventilation port 11 is started while passing the protrusion 23 through the passage portion 12 provided on the upper side of the wall 10A (see FIGS. 7A and 7B). ).

その後、カバー２を回転させつつ通気口１１へ押し込むことにより、上側左右の各係合部２２について、第１爪部２２３Ａ又は第２爪部２２３Ｂを通気口１１の周囲の壁１０Ａの上辺に当接させる。本実施形態では、第２爪部２２３Ｂの後端面Ｅｂが、第１爪部２２３Ａの後端面Ｅａより後方に配されている（図５（Ｂ）参照）。又、第２爪部２２３Ｂの後端面Ｅｂには、後ろから前方に向けて緩やかに昇る傾斜が設けられている。更に、第１爪部２２３Ａの上端面Ｆａと第２爪部２２３Ｂの上端面Ｆｂとが、同一平面で揃うと共に、側面視において繋がっている（図５（Ｂ）参照）。尚、上端面Ｆａ及びＦｂは、側面視において部分的に重なっていてもよい。 After that, by pushing the cover 2 into the vent 11 while rotating the cover 2, the first claw portion 223A or the second claw portion 223B is applied to the upper side of the wall 10A around the vent 11 for each of the upper left and right engaging portions 22. Get in touch. In the present embodiment, the rear end surface Eb of the second claw portion 223B is arranged behind the rear end surface Ea of the first claw portion 223A (see FIG. 5B). Further, the rear end surface Eb of the second claw portion 223B is provided with an inclination that gently rises from the back to the front. Further, the upper end surface Fa of the first claw portion 223A and the upper end surface Fb of the second claw portion 223B are aligned on the same plane and are connected in a side view (see FIG. 5B). The upper end surfaces Fa and Fb may partially overlap in the side view.

よって、通気口１１に枠部２１１を挿入する過程で、先ず、第２爪部２２３Ｂの後端面Ｅｂに通気口１１の周囲の壁１０Ａの上辺が斜めに当接する。当接後、カバー２が更に押し込まれることにより、撓曲部２２１が撓んで第２爪部２２３Ｂが梁部２１４側へ移動し始める。そして、壁１０Ａは、係合部２２における撓曲部２２１の撓曲（即ち、梁部２１４側への第２爪部２２３Ｂの移動）を伴いながら、第２爪部２２３Ｂの後端面Ｅｂに沿って相対的に摺動し、その後、第２爪部２２３Ｂの上端面Ｆｂ上へ移動する。 Therefore, in the process of inserting the frame portion 211 into the ventilation port 11, first, the upper side of the wall 10A around the ventilation port 11 diagonally abuts on the rear end surface Eb of the second claw portion 223B. After the contact, the cover 2 is further pushed in, so that the flexure portion 221 bends and the second claw portion 223B begins to move toward the beam portion 214. Then, the wall 10A is along the rear end surface Eb of the second claw portion 223B with the flexure of the flexure portion 221 in the engaging portion 22 (that is, the movement of the second claw portion 223B toward the beam portion 214 side). Then relatively slides and then moves onto the upper end surface Fb of the second claw portion 223B.

壁１０Ａが厚さＤ１（＜厚さＤ２）の壁である場合には、切欠１３が設けられていないため、カバー２が更に押し込まれることにより、壁１０Ａは、第２爪部２２３Ｂの上端面Ｆｂ上を相対的に摺動した後、第１爪部２２３Ａの上端面Ｆａ上へ移動する（図５（Ｂ）参照）。そして、カバー２が更に押し込まれて、壁１０Ａが第１爪部２２３Ａのガイド面Ｇａに達したとき、上述した様に当該ガイド面Ｇａは前方斜め下方に傾斜しているため、撓曲部２２１は、自身の復元力で元の位置に戻ろうとして上方へ移動し、これに伴い、撓曲部２２１に対して相対移動する壁１０Ａは、ガイド面Ｇａに沿って降りる方向へ誘導される。その後、壁１０Ａがガイド面Ｇａの前端に達することにより、撓曲部２２１は僅かに撓曲した状態まで復元し、その結果として、当接部２２２と第１爪部２２３Ａとの間に形成された第１係合位置Ｈａで、厚さＤ１の壁１０Ａと係合部２２とが係合する。 When the wall 10A is a wall having a thickness D1 (<thickness D2), the notch 13 is not provided, so that the cover 2 is further pushed in so that the wall 10A becomes the upper end surface of the second claw portion 223B. After relatively sliding on Fb, it moves onto the upper end surface Fa of the first claw portion 223A (see FIG. 5B). Then, when the cover 2 is further pushed in and the wall 10A reaches the guide surface Ga of the first claw portion 223A, the guide surface Ga is inclined forward and diagonally downward as described above, so that the flexure portion 221 Moves upward in an attempt to return to its original position by its own restoring force, and along with this, the wall 10A that moves relative to the flexure portion 221 is guided in the direction of descending along the guide surface Ga. After that, when the wall 10A reaches the front end of the guide surface Ga, the flexure portion 221 is restored to a slightly flexed state, and as a result, it is formed between the contact portion 222 and the first claw portion 223A. At the first engaging position Ha, the wall 10A having a thickness of D1 and the engaging portion 22 are engaged with each other.

そして、第１係合位置Ｈａで壁１０Ａと係合部２２とが係合したとき、撓曲部２２１が僅かに撓曲した状態で維持されるため、壁１０Ａの上辺が第１係合位置Ｈａにしっかり嵌まる。従って、当接部２２２が壁１０Ａに外側から当接すると共に、壁１０Ａが、当接部２２２と第１爪部２２３Ａとの間に挟まれる（図７（Ａ）参照）。この様にして、係合部２２は、上述した第１係合位置Ｈａにて厚さＤ１の壁１０Ａに係合する。尚、当接部２２２に代えて、或いは、当接部２２２と共に、鍔部２１２が壁１０Ａに外側から当接してもよい。 Then, when the wall 10A and the engaging portion 22 are engaged at the first engaging position Ha, the flexure portion 221 is maintained in a slightly flexed state, so that the upper side of the wall 10A is the first engagement position. It fits tightly in Ha. Therefore, the contact portion 222 comes into contact with the wall 10A from the outside, and the wall 10A is sandwiched between the contact portion 222 and the first claw portion 223A (see FIG. 7A). In this way, the engaging portion 22 engages with the wall 10A having a thickness of D1 at the first engaging position Ha described above. The flange portion 212 may abut on the wall 10A from the outside instead of the abutting portion 222 or together with the abutting portion 222.

一方、壁１０Ａが厚さＤ２の壁である場合には、切欠１３が設けられているため、壁１０Ａは第１爪部２２３Ａに衝突しない。従って、カバー２が押し込まれることにより、壁１０Ａは、第２爪部２２３Ｂの上端面Ｆｂ上を相対的に摺動した後、第１爪部２２３Ａの上端面Ｆａ上へは移動せずに第２爪部２２３Ｂのガイド面Ｇｂに達する（図５（Ｂ）参照）。上述した様にガイド面Ｇｂも前方斜め下方に傾斜しているため、壁１０Ａがガイド面Ｇｂに達したとき、撓曲部２２１は、自身の復元力で元の位置に戻ろうとして上方へ移動し、これに伴い、撓曲部２２１に対して相対移動する壁１０Ａは、ガイド面Ｇｂに沿って降りる方向へ誘導される。その後、壁１０Ａがガイド面Ｇｂの前端に達することにより、撓曲部２２１は僅かに撓曲した状態まで復元し、その結果として、当接部２２２と第２爪部２２３Ｂとの間に形成された第２係合位置Ｈｂで、厚さＤ２の壁１０Ａと係合部２２とが係合する。 On the other hand, when the wall 10A is a wall having a thickness D2, the wall 10A does not collide with the first claw portion 223A because the notch 13 is provided. Therefore, when the cover 2 is pushed in, the wall 10A slides relatively on the upper end surface Fb of the second claw portion 223B, and then does not move onto the upper end surface Fa of the first claw portion 223A. 2 It reaches the guide surface Gb of the claw portion 223B (see FIG. 5B). As described above, the guide surface Gb is also inclined forward and diagonally downward, so when the wall 10A reaches the guide surface Gb, the flexure portion 221 moves upward in an attempt to return to its original position by its own restoring force. Along with this, the wall 10A that moves relative to the flexure portion 221 is guided in the descending direction along the guide surface Gb. After that, when the wall 10A reaches the front end of the guide surface Gb, the flexure portion 221 is restored to a slightly flexed state, and as a result, it is formed between the contact portion 222 and the second claw portion 223B. At the second engaging position Hb, the wall 10A having a thickness of D2 and the engaging portion 22 are engaged with each other.

そして、第２係合位置Ｈｂで壁１０Ａと係合部２２とが係合したとき、撓曲部２２１が僅かに撓曲した状態で維持されるため、当接部２２２が壁１０Ａに外側から当接すると共に、壁１０Ａが、当接部２２２と第２爪部２２３Ｂとの間に挟まれる（図７（Ｂ）参照）。この様にして、係合部２２は、上述した第２係合位置Ｈｂにて厚さＤ２の壁１０Ａに係合する。尚、この場合も、当接部２２２に代えて、或いは、当接部２２２と共に、鍔部２１２が壁１０Ａに外側から当接してもよい。 Then, when the wall 10A and the engaging portion 22 are engaged at the second engaging position Hb, the flexure portion 221 is maintained in a slightly flexed state, so that the contact portion 222 is attached to the wall 10A from the outside. At the same time as abutting, the wall 10A is sandwiched between the abutting portion 222 and the second claw portion 223B (see FIG. 7B). In this way, the engaging portion 22 engages with the wall 10A having a thickness of D2 at the above-mentioned second engaging position Hb. Also in this case, the flange portion 212 may abut on the wall 10A from the outside instead of the abutting portion 222 or together with the abutting portion 222.

この様に、上記電気機器は、上述した第１爪部２２３Ａ及び第２爪部２２３Ｂを備えているため、壁１０Ａの厚さに応じて、距離Ｌ１だけ離れた当接部２２２と第１爪部２２３Ａとの間（第１係合位置Ｈａ）に壁１０Ａを介在させるか、又は、距離Ｌ２だけ離れた当接部２２２と第２爪部２２３Ｂとの間（第２係合位置Ｈｂ）に壁１０Ａを介在させるか、を選択することができる。そして、本実施形態では、距離Ｌ１及びＬ２を、壁１０Ａの２種類の厚さＤ１及びＤ２にそれぞれ対応させている。よって、当該２種類の厚さの壁１０Ａに形成された通気口１１の何れに対しても、カバー２をガタツキなく取り付けることができる。 As described above, since the electric device includes the first claw portion 223A and the second claw portion 223B described above, the contact portion 222 and the first claw separated by a distance L1 according to the thickness of the wall 10A. A wall 10A is interposed between the portion 223A (first engagement position Ha), or between the contact portion 222 and the second claw portion 223B (second engagement position Hb) separated by a distance L2. You can choose whether to intervene the wall 10A. Then, in the present embodiment, the distances L1 and L2 correspond to the two types of thicknesses D1 and D2 of the wall 10A, respectively. Therefore, the cover 2 can be attached to any of the vents 11 formed in the walls 10A having the two thicknesses without rattling.

通気口１１からカバー２を取り外す場合、カバー２に設けられている上側左右の各係合部２２の当接部２２２を下方へ移動させて撓曲部２２１を撓曲させることにより、壁１０Ａの上辺への上側の係合部２２の係合を解除する。そして、上側左右の係合部２２の係合を解除した状態で、下側左右の係合部２２の係合位置を支点として、カバー２の上部を、通気口１１から引き離す方向に回転させる。そして、この回転よってカバー２を通気口１１から引き抜くことにより、通気口１１からカバー２を取り外すことができる。この様に、当接部２２２は、撓曲部２２１を撓曲させるための操作部としての機能を兼ね備える。 When the cover 2 is removed from the vent 11, the abutting portion 222 of each of the upper left and right engaging portions 22 provided on the cover 2 is moved downward to bend the flexure portion 221 so that the wall 10A is bent. The upper engagement portion 22 is disengaged from the upper side. Then, with the upper left and right engaging portions 22 disengaged, the upper portion of the cover 2 is rotated in a direction of pulling away from the vent 11 with the engaging positions of the lower left and right engaging portions 22 as fulcrums. Then, by pulling out the cover 2 from the vent 11 by this rotation, the cover 2 can be removed from the vent 11. As described above, the contact portion 222 also has a function as an operation unit for bending the flexure portion 221.

上述の実施形態の説明は、すべての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は、上述の実施形態ではなく、特許請求の範囲によって示される。更に、本発明の範囲には、特許請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。例えば、上記電気機器は、通過部１２及び突起部２３がない構成を有していてもよい。 The description of the embodiments described above should be considered exemplary in all respects and not restrictive. The scope of the invention is indicated by the claims, not by the embodiments described above. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope of the claims. For example, the electric device may have a configuration in which the passing portion 12 and the protruding portion 23 are not provided.

１筐体
２カバー
１０Ａ壁
１１通気口
１２通過部
１３切欠
２１カバー本体
２１Ａ上縁部
２１Ｂ下縁部
２１Ｃ側縁部
２１Ｄ凹部
２２係合部
２３突起部
２１１枠部
２１２鍔部
２１３羽板
２１４梁部
２１４ａ上面
２２１撓曲部
２２１ａ先端部
２２１ｂ湾曲部
２２１ｃ中間部
２２２当接部
２２３Ａ第１爪部
２２３Ｂ第２爪部
Ｄ１、Ｄ２厚さ
Ｅａ、Ｅｂ後端面
Ｆａ、Ｆｂ上端面
Ｇａ、Ｇｂガイド面
Ｈａ第１係合位置
Ｈｂ第２係合位置
Ｌ１、Ｌ２距離 1 Housing 2 Cover 10A Wall 11 Vent 12 Passage 13 Notch 21 Cover body 21A Upper edge 21B Lower edge 21C Side edge 21D Recess 22 Engagement 23 Protrusion 211 Frame 212 Flute 213 Feather plate 214 Beam Part 214a Top surface 221 Flexure part 221a Tip part 221b Curved part 221c Intermediate part 222 Contact part 223A First claw part 223B Second claw part D1, D2 Thickness Ea, Eb Rear end surface Fa, Fb Upper end surface Ga, Gb Guide surface Ha 1st engagement position Hb 2nd engagement position L1, L2 distance

Claims

A cover body having a frame portion attached to a vent formed on the wall and inserted into the vent and a beam portion provided in the area surrounded by the frame portion.
An engaging portion provided in the recess formed in the frame portion and engaged with the wall around the vent when the cover body is attached to the vent.
Equipped with
The engaging portion is
The flexure portion held by the beam portion exposed from the recess and the flexure portion
An abutting portion provided on the flexure portion and abutting on the wall around the vent from the outside, and a contact portion.
A first claw portion and a second claw portion provided on the flexure portion and sandwiching the wall around the vent from the inside between the abutting portion and the abutting portion.
Have,
A cover in which the first claw portion and the second claw portion are selectively used according to the thickness of the wall and are connected via the flexure portion and the contact portion.

The cover body further has a flange portion formed on the outer periphery of the frame portion.
The cover according to claim 1, wherein the collar portion is formed so as to come into contact with the wall around the vent port from the outside when the frame portion is inserted into the vent.

The flexured portion has a tip portion, a curved portion separated from the abutting portion from the tip portion, and an intermediate portion connecting the tip portion and the curved portion.
The contact portion is provided at the tip portion, and the contact portion is provided.
The cover according to claim 1 or 2, wherein the curved portion is a portion that rises diagonally from the exposed beam portion toward the mounting direction of the cover body and is curved toward the tip portion.

The first claw portion and the second claw portion have a guide surface provided so as to face the contact portion.
The cover according to any one of claims 1 to 3, wherein the guide surface is separated from the contact portion and is inclined toward the flexure portion.

The invention according to any one of claims 1 to 4, wherein the distance between the first claw portion and the abutting portion and the distance between the second claw portion and the abutting portion are different from each other. Cover.