JP3502542B2 - Plug retaining device - Google Patents

Plug retaining device

Info

Publication number
JP3502542B2
JP3502542B2 JP08986798A JP8986798A JP3502542B2 JP 3502542 B2 JP3502542 B2 JP 3502542B2 JP 08986798 A JP08986798 A JP 08986798A JP 8986798 A JP8986798 A JP 8986798A JP 3502542 B2 JP3502542 B2 JP 3502542B2
Authority
JP
Japan
Prior art keywords
plug
case
cut groove
cord
shaped cut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP08986798A
Other languages
Japanese (ja)
Other versions
JPH11288757A (en
Inventor
秀之 杉原
Original Assignee
株式会社コルグ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社コルグ filed Critical 株式会社コルグ
Priority to JP08986798A priority Critical patent/JP3502542B2/en
Publication of JPH11288757A publication Critical patent/JPH11288757A/en
Application granted granted Critical
Publication of JP3502542B2 publication Critical patent/JP3502542B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】この発明は各種の電子機器に
用いて好適なプラグ抜止装置に関する。 【0002】 【従来の技術】従来より各種の電子機器において電源コ
ードの先端側にアダプタが接続され、アダプタから引き
出されたコード14(図7)の先にプラグ13が接続さ
れ、このプラグ13が機器のケース11に設けられたプ
ラグ差込口12に差し込まれて電源の供給を受ける機器
が多く見られる。 【0003】この構造の電源受給構造を採る場合、プラ
グ13が抜け易い不都合がある。特に電子楽器の分野に
おいて足で音量、音色の切替え等を操作するコントロー
ルボックスがある。図9及び図10にその一例を示す。
偏平なケース11の上面に足踏式の押釦スイッチ16
と、シーソー運動可能な状態に装着されたペタル17が
設けられ、押釦スイッチ16を操作することにより音色
の切替え等を行い、ペタル17をシーソー運動させるこ
とにより音量を制御する等により演奏中に楽器の設定状
態を変更できるように構成される。図9に示す18は楽
器の設定状態等を表示する表示器を示す。 【0004】このように足で操作する装置では実用中は
乱雑に取り扱われるため、プラグ13が抜けてしまう事
故が起き易い。このため従来よりプラグ13の抜止装置
が設けられている。このプラグ抜止装置は図6乃至図8
に示すように、プラグ差込口12の近傍にケース11の
板面に向かって溝15Aが形成された樹脂ブロック15
によって構成される。この樹脂ブロック15はビス15
Bによってケース11に装着され、プラグ抜止装置とし
て利用している。 【0005】 つまり、樹脂ブロック15に形成した溝
15Aに電源コード14を図7に示すように係合せ、
このコード14の係合によりコード14に張力が与えら
れても、その張力が直接プラグ13に伝達されないよう
にし、プラグ13が差込口12から抜けてしまうことを
防止する構造としている。 【0006】 【発明が解決しようとする課題】図6乃至図8に示した
プラグ抜止装置はケース11とは別に成形した樹脂ブロ
ック15によって構成しているため、樹脂成形金型の数
が多くなり、この点でコストが高くなる欠点がある。ま
た樹脂ブロック15をビス15Bによってケース11に
装着しているから組立に手間が掛かる欠点がある。 【0007】この発明の目的は、金型の使用個数を少な
くし、安価に作ることができるプラグ抜止装置の構造を
提案するものである。 【0008】 【課題を解決するための手段】この発明ではケースの板
面に抜け止めしようとするプラグに接続されたコードの
外径より溝幅が広いコ字状の切溝を形成し、この切溝の
形成によって舌片を形成し、この舌片にコードを係合さ
せることによりコードに掛かる張力を舌片で受け止める
構造としたプラグ抜止装置を提案するものである。 【0009】この発明の構成によれば、ケースの板面に
コ字状に切溝を形成するだけの構造でプラグ抜止装置を
構成するものであるから、ケースの成形時にケースと一
体に形成することができる。この結果、プラグ抜止装置
を構成するために特別に樹脂成形のための金型を必要と
しない。更に特別に取付けのための手間を掛ける必要も
ないから、これらの点でコストダウンが期待できる。 【0010】 【発明の実施の形態】図1乃至図4にこの発明の一実施
例を示す。図6乃至図7と対応する部分には同一符号を
付し、重複説明は省略するが、図1乃至図4に示す符号
21はこの発明により提案するプラグ抜止装置を示す。
この発明によるプラグ抜止装置21はケース11の板面
にコ字状に形成した切溝21Aと、この切溝21Aを形
成することにより、この切溝21Aによって囲まれて形
成された舌片21Bとによって構成することができる。 【0011】舌片21Bは望ましくは図2に示すよう
に、ケース11の板面からその板厚相当分だけ外側に突
出して形成すると、コード14を係合させる作業を簡単
に行うことができるようになる。更に、切溝21Aには
その両終端部分に外向きに拡がる切欠21Cを形成す
る。この切欠21Cを設けることにより舌片21Bに係
合したコード14が、コード14自身の弾性によって切
欠21Cに係合し、舌片21Bとの係合状態から外れて
しまう事故が起きることを阻止することができる。 【0012】更に、舌片21Bにも内向きに切欠21D
を形成する。この切欠21Dを設けておくことにより、
コード14に張力与えられた際にコード14がこの切
欠21Dに入り込み、コード14が舌片21Bから外れ
てしまう事故が起きることを阻止することができる。な
お、切溝21Aを形成した部分の裏側には図3及び図4
に示すように裏板22を形成し、切溝21Aの部分から
異物がケース11の内部に入り込むことを阻止する構成
とすることができる。 【0013】図1乃至図3に示した例では切溝21Aを
円弧状に形成した場合を示したが、図5に示すように角
形のコ字状の切溝とすることもできる。このように角形
にコ字状の切溝21Aを形成しても上述と同様の作用効
果を得ることができる。 【0014】 【発明の効果】以上説明したように、この発明によるプ
ラグ抜止装置21はケース11と一体に成形できるか
ら、特にプラグ抜止装置を形成するための金型を必要と
しない。この結果、金型に要する費用を軽減できる。更
に、ケース成形時にケース11と一体にプラグ抜止装置
を形成できるため、特にプラグ抜止装置を取付けるため
の手間を必要としない。従って、これらの点でコストダ
ウンが期待できる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug preventing device suitable for various electronic devices. 2. Description of the Related Art Conventionally, in various electronic devices, an adapter is connected to a leading end of a power cord, and a plug 13 is connected to a tip of a cord 14 (FIG. 7) drawn from the adapter. There are many devices that are supplied with power by being inserted into a plug insertion port 12 provided in a case 11 of the device. In the case of adopting the power receiving structure of this structure, there is a disadvantage that the plug 13 is easily pulled out. In particular, in the field of electronic musical instruments, there is a control box for operating volume and tone switching by foot. 9 and 10 show an example thereof.
A foot-operated pushbutton switch 16 is provided on the upper surface of the flat case 11.
And a petal 17 mounted so as to be capable of seesaw movement. A tone is switched by operating a push button switch 16 and the volume is controlled by causing the petal 17 to perform seesaw movement. It is configured to be able to change the setting state of. Reference numeral 18 shown in FIG. 9 denotes a display for displaying the setting state of the musical instrument and the like. [0004] In such a device operated by the foot, since the device is handled in a rough manner during practical use, an accident in which the plug 13 comes off easily occurs. For this reason, a device for preventing the plug 13 from being removed has conventionally been provided. This plug removal device is shown in FIGS.
As shown in FIG. 5, a resin block 15 having a groove 15A formed in the vicinity of the plug insertion port 12 toward the plate surface of the case 11 is formed.
It is constituted by. This resin block 15 is a screw 15
B attaches to the case 11 and is used as a plug removal prevention device. [0005] That is, the power cord 14 into the groove 15A formed in the resin block 15 is engaged as shown in FIG. 7,
Even if tension is applied to the cord 14 by the engagement of the cord 14, the tension is not transmitted directly to the plug 13, and the plug 13 is prevented from falling out of the insertion port 12. [0006] Since the plug stopper shown in FIGS. 6 to 8 is constituted by a resin block 15 molded separately from the case 11, the number of resin molding dies increases. In this respect, there is a disadvantage that the cost is increased. Further, since the resin block 15 is mounted on the case 11 by the screws 15B, there is a disadvantage in that the assembling is troublesome. An object of the present invention is to propose a structure of a plug retaining device which can be manufactured at a low cost by reducing the number of molds used. In the present invention, a U-shaped cut groove having a groove width larger than the outer diameter of a cord connected to a plug to be retained is formed on a plate surface of a case. A tongue piece is formed by forming a kerf, and a plug removal device having a structure in which a tension applied to the cord is received by the tongue piece by engaging the cord with the tongue piece is proposed. According to the structure of the present invention, since the plug retaining device has a structure in which only a U-shaped cut groove is formed on the plate surface of the case, it is formed integrally with the case when the case is formed. be able to. As a result, there is no need for a special mold for resin molding to constitute the plug removal prevention device. Further, since there is no need to take extra time for mounting, cost reduction can be expected in these respects. FIG. 1 to FIG. 4 show an embodiment of the present invention. 6 and 7 are denoted by the same reference numerals, and redundant description is omitted. Reference numeral 21 shown in FIGS. 1 to 4 denotes a plug removal prevention device proposed by the present invention.
The plug preventing device 21 according to the present invention includes a U-shaped cut groove 21A formed on the plate surface of the case 11, and a tongue piece 21B formed by being surrounded by the cut groove 21A by forming the cut groove 21A. Can be configured by If the tongue piece 21B is formed so as to protrude outward from the plate surface of the case 11 by an amount corresponding to the plate thickness, as shown in FIG. 2, the operation for engaging the cord 14 can be easily performed. become. Further, a notch 21C that extends outward is formed at both end portions of the cut groove 21A. By providing the notch 21C, it is possible to prevent the cord 14 engaged with the tongue piece 21B from engaging with the notch 21C due to the elasticity of the cord 14 itself and coming off the engagement state with the tongue piece 21B. be able to. Further, the tongue piece 21B is also cut inwardly 21D.
You form. By providing this notch 21D,
When tension is applied to the cord 14, it is possible to prevent the cord 14 from entering the notch 21D and causing the cord 14 to come off the tongue piece 21B. 3 and 4 are provided on the back side of the portion where the cut groove 21A is formed.
The back plate 22 is formed as shown in FIG. 2 to prevent foreign matter from entering the inside of the case 11 from the cut groove 21A. In the examples shown in FIGS. 1 to 3, the case where the cut groove 21A is formed in an arc shape is shown, but a square U-shaped cut groove may be used as shown in FIG. Thus, even if the square U-shaped cut groove 21A is formed, the same operation and effect as described above can be obtained. As described above, since the plug retaining device 21 according to the present invention can be formed integrally with the case 11, a mold for forming the plug retaining device is not particularly required. As a result, the cost required for the mold can be reduced. Further, since the plug removal preventing device can be formed integrally with the case 11 at the time of molding the case, no trouble is required particularly for mounting the plug removal preventing device. Therefore, cost reduction can be expected in these respects.
【図面の簡単な説明】 【図1】この発明の一実施例を説明するための背面図。 【図2】この発明の要部の構造を説明するための斜視
図。 【図3】この発明の図1に示したA−A線上の断面図。 【図4】図1に示したB−B線上の断面図。 【図5】この発明の変形実施例を説明するための背面
図。 【図6】従来の技術を説明するための背面図。 【図7】従来の技術を説明するための斜視図。 【図8】従来の技術の要部の構造を説明するための断面
図。 【図9】従来の技術で用いられる装置の一例を説明する
ための平面図。 【図10】図9の側面図。 【符号の説明】 11 ケース 12 プラグ差込口 13 プラグ 14 コード 21 プラグ抜止装置 21A 切溝 21B 舌片 21C,21D 切欠
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear view for explaining an embodiment of the present invention. FIG. 2 is a perspective view for explaining a structure of a main part of the present invention. FIG. 3 is a sectional view of the present invention taken along line AA shown in FIG. 1; FIG. 4 is a sectional view taken along line BB shown in FIG. 1; FIG. 5 is a rear view for explaining a modified embodiment of the present invention. FIG. 6 is a rear view for explaining a conventional technique. FIG. 7 is a perspective view for explaining a conventional technique. FIG. 8 is a cross-sectional view for explaining a structure of a main part of a conventional technique. FIG. 9 is a plan view for explaining an example of an apparatus used in a conventional technique. FIG. 10 is a side view of FIG. 9; [Description of Signs] 11 Case 12 Plug insertion port 13 Plug 14 Code 21 Plug retaining device 21A Cut groove 21B Tongue pieces 21C, 21D Notch
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平8−274853(JP,A) 特開 平5−13125(JP,A) 特開 平6−325818(JP,A) 実開 昭63−202098(JP,U) 実開 平2−32677(JP,U) 実開 平5−67064(JP,U) 実開 昭59−31167(JP,U) 実開 平6−54252(JP,U) 実公 昭61−39175(JP,Y1) (58)調査した分野(Int.Cl.7,DB名) H01R 13/58 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-274853 (JP, A) JP-A-5-13125 (JP, A) JP-A-6-325818 (JP, A) 202098 (JP, U) JP-A-2-32677 (JP, U) JP-A 5-67064 (JP, U) JP-A-59-31167 (JP, U) JP-A 6-54252 (JP, U) 61-39175 (JP, Y1) (58) Field surveyed (Int. Cl. 7 , DB name) H01R 13/58

Claims (1)

  1. (57)【特許請求の範囲】 【請求項1】 A.樹脂材で形成される電子機器のケー
    スの側面の外側の面にプラグ差込口が実装され、この
    ラグ差込口に差し込まれて抜止されるべきプラグに接続
    されたコードの外径より溝幅を大きく選定して上記プラ
    グ差込口が実装された面と同一の面に形成したコ字状の
    切溝と、 B.このコ字状の切溝で囲まれて形成され、上記ケース
    の板面から外側に突出して形成された舌片と、 C.上記コ字状の切溝の両終端部分に外向き及び内向き
    に拡がる形状に形成した切欠と、 を具備していることを特徴とするプラグ抜止装置。
    (57) [Claims] [Claim 1] A. Plug insertion port is mounted on the outer surface side of the electronic device case formed of a resin material, connected code plug to be write Marete retaining insert in the flop <br/> lug receptacle greater choice to the plug groove width than the outer diameter of the
    B. a U-shaped cut groove formed on the same surface as the surface on which the insertion port is mounted ; B. a tongue formed so as to be surrounded by the U-shaped cut groove and protruding outward from the plate surface of the case; A notch formed at both end portions of the U-shaped cut groove so as to expand outward and inward.
JP08986798A 1998-04-02 1998-04-02 Plug retaining device Expired - Fee Related JP3502542B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08986798A JP3502542B2 (en) 1998-04-02 1998-04-02 Plug retaining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08986798A JP3502542B2 (en) 1998-04-02 1998-04-02 Plug retaining device

Publications (2)

Publication Number Publication Date
JPH11288757A JPH11288757A (en) 1999-10-19
JP3502542B2 true JP3502542B2 (en) 2004-03-02

Family

ID=13982734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08986798A Expired - Fee Related JP3502542B2 (en) 1998-04-02 1998-04-02 Plug retaining device

Country Status (1)

Country Link
JP (1) JP3502542B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10205414A1 (en) * 2002-02-09 2003-08-14 Bosch Gmbh Robert Housing with integrated strain relief

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139175Y2 (en) * 1980-04-21 1986-11-11
JPS5931167U (en) * 1982-08-23 1984-02-27
JPS63202098U (en) * 1987-06-18 1988-12-27
JPH0232677U (en) * 1988-08-24 1990-02-28
JP2871177B2 (en) * 1991-06-28 1999-03-17 松下電工株式会社 Multi-pole modular jack
JPH0567064U (en) * 1992-02-14 1993-09-03 東陶機器株式会社 Cord tension stop structure
JPH0654252U (en) * 1992-12-28 1994-07-22 美和医療電機株式会社 Power plug retainer
US5302140A (en) * 1993-04-02 1994-04-12 At&T Bell Laboratories Connector with mounting collar for use in universal patch panel systems
JPH08274853A (en) * 1995-03-29 1996-10-18 Canon Inc Structure for attaching, detaching and holding cord

Also Published As

Publication number Publication date
JPH11288757A (en) 1999-10-19

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