JP2009004176A - Terminal block - Google Patents

Terminal block Download PDF

Info

Publication number
JP2009004176A
JP2009004176A JP2007162833A JP2007162833A JP2009004176A JP 2009004176 A JP2009004176 A JP 2009004176A JP 2007162833 A JP2007162833 A JP 2007162833A JP 2007162833 A JP2007162833 A JP 2007162833A JP 2009004176 A JP2009004176 A JP 2009004176A
Authority
JP
Japan
Prior art keywords
terminal
screw
terminal screw
block
terminal block
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.)
Granted
Application number
JP2007162833A
Other languages
Japanese (ja)
Other versions
JP4900875B2 (en
Inventor
Toshiyuki Osabe
敏之 長部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Lambda Corp
Original Assignee
TDK Lambda Corp
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 TDK Lambda Corp filed Critical TDK Lambda Corp
Priority to JP2007162833A priority Critical patent/JP4900875B2/en
Publication of JP2009004176A publication Critical patent/JP2009004176A/en
Application granted granted Critical
Publication of JP4900875B2 publication Critical patent/JP4900875B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a terminal screw from falling down from a terminal block body and capable of taking out the terminal screw therefrom. <P>SOLUTION: The terminal block 1 includes: a terminal piece 13 having a screw hole 12; a terminal screw 14 screwed into the screw hoe 12; a terminal screw holding part 15 that holds the terminal screw 14 out of screw-engagement with the screw hole 12; and a terminal screw take-out part 16 that can take out the terminal screw 14 from the terminal screw holding part 15. Furthermore, in the terminal screw take-out part 16, a terminal screw falling preventive part 35 is provided which is locked to the terminal screw 14 when the terminal screw 14 is taken out from the terminal screw take-out part 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、端子台に関し、例えば、電気機器に設けられ、外部端子を電気的に接続する端子台に関するものである。   The present invention relates to a terminal block, for example, a terminal block that is provided in an electrical device and electrically connects an external terminal.

従来、この種の端子台としての端子台構造は、外部端子を端子ねじで接続するものが開示されている(例えば、特許文献1)。   Conventionally, a terminal block structure as this type of terminal block has been disclosed in which external terminals are connected by terminal screws (for example, Patent Document 1).

この端子台構造110は、図5に示すように、端子台本体100の端子片101に形成されたねじ穴102に端子ねじ103を螺合することで、端子片101と端子ねじ103の頭部104との間に、電線を接続した外部端子(図示せず)を狭持するように構成されている。   As shown in FIG. 5, the terminal block structure 110 is formed by screwing a terminal screw 103 into a screw hole 102 formed in the terminal piece 101 of the terminal block main body 100, so that the head of the terminal piece 101 and the terminal screw 103. An external terminal (not shown) to which an electric wire is connected is sandwiched between 104 and 104.

端子台本体100には、端子片101に形成されたねじ穴102と同軸となるよう保持穴105を有する端子ねじ保持部106が形成されている。端子ねじ103は足部107が端子片101に形成されたねじ穴102に螺合すると共に、頭部104が保持穴105に螺合するように構成されている。これにより、端子ねじ103を端子片101から緩める方向に回すと、足部107とねじ穴102の螺合が解除される一方、端子ねじ103の頭部104が保持穴105に螺合しながら上昇し、足部107がねじ穴102から完全に抜け出た状態において、端子ねじ103は端子ねじ保持部106により端子片101から浮いた状態で保持される。従って、特許文献1に係る端子台構造110は、足部107がねじ穴102から完全に解除された状態においても、端子ねじ103が端子台本体100から落下するのを防止することができるという優れた効果を発揮する。
特開2006−107878号公報
The terminal block main body 100 is formed with a terminal screw holding portion 106 having a holding hole 105 so as to be coaxial with the screw hole 102 formed in the terminal piece 101. The terminal screw 103 is configured such that the foot 107 is screwed into the screw hole 102 formed in the terminal piece 101 and the head 104 is screwed into the holding hole 105. As a result, when the terminal screw 103 is turned in the direction of loosening from the terminal piece 101, the screwing of the foot 107 and the screw hole 102 is released, while the head 104 of the terminal screw 103 is raised while screwing into the holding hole 105. In the state where the foot 107 is completely removed from the screw hole 102, the terminal screw 103 is held in a state of being lifted from the terminal piece 101 by the terminal screw holding portion 106. Therefore, the terminal block structure 110 according to Patent Document 1 is excellent in that the terminal screw 103 can be prevented from dropping from the terminal block body 100 even when the foot 107 is completely released from the screw hole 102. Show the effect.
JP 2006-107878 A

しかしながら、上記特許文献1では、端子ねじ103を緩めても、頭部104が端子ねじ保持部106に保持され、そこで螺着固定されてしまうので、締め過ぎなどによるねじ山やねじ頭部の変形等により、端子ねじ103を交換する必要が生じた場合であっても、交換が必要な端子ねじ103のみを端子台本体100から取り出すことができない構造となっていた。従って、特許文献1の端子台構造110では、端子ねじ103を交換するために、端子台構造110そのものを、電気機器(図示せず)から取り外して交換する必要があった。そうすると、本来、端子ねじ1個の交換で済むところ、上記特許文献1では、端子台構造全体を交換する必要があるので、その分、無駄が生じてしまう、という問題があった。   However, in the above-mentioned Patent Document 1, even if the terminal screw 103 is loosened, the head 104 is held by the terminal screw holding portion 106 and is screwed and fixed there. For example, even when it is necessary to replace the terminal screw 103, only the terminal screw 103 that needs to be replaced cannot be taken out from the terminal base body 100. Therefore, in the terminal block structure 110 of Patent Document 1, in order to replace the terminal screw 103, it is necessary to remove the terminal block structure 110 itself from an electrical device (not shown) and replace it. Then, originally, it is only necessary to replace one terminal screw. However, in Patent Document 1, since the entire terminal block structure needs to be replaced, there is a problem that waste is generated accordingly.

そこで本発明は上記した問題点に鑑み、端子ねじが端子台本体から落下するのを防止すると共に、該端子ねじを取り出すことができる端子台を提供することを目的とする。   In view of the above-described problems, an object of the present invention is to provide a terminal block capable of preventing the terminal screw from dropping from the terminal block body and taking out the terminal screw.

上記目的を達成するために、請求項1に係る発明は、ねじ穴が形成された端子片と、前記ねじ穴に螺合する端子ねじと、前記ねじ穴との螺合が外れた端子ねじを保持する端子ねじ保持部とを備えた端子台において、前記端子ねじを前記端子ねじ保持部から取出し可能にする端子ねじ取出し部を備えることを特徴とする。   In order to achieve the above object, the invention according to claim 1 includes a terminal piece in which a screw hole is formed, a terminal screw that is screwed into the screw hole, and a terminal screw that is unscrewed from the screw hole. A terminal block having a terminal screw holding portion to hold, wherein the terminal screw has a terminal screw take-out portion that enables the terminal screw to be taken out from the terminal screw holding portion.

また、請求項2に係る発明は、さらに、前記端子ねじを前記端子ねじ取出し部から取出す際に、当該端子ねじに係止する端子ねじ落下防止部を備えることを特徴とする。   In addition, the invention according to claim 2 further includes a terminal screw fall prevention portion that engages with the terminal screw when the terminal screw is taken out from the terminal screw taking-out portion.

本発明の請求項1記載の端子台によれば、端子ねじが端子台本体から落下するのを防止すると共に、該端子ねじを取り出すことができる。従って、端子台では、交換が必要な端子ねじのみを交換することができるので、従来、端子ねじの交換の際に生じていたい無駄を省くことができる。   According to the terminal block of the first aspect of the present invention, it is possible to prevent the terminal screw from dropping from the terminal block body and to take out the terminal screw. Therefore, in the terminal block, only the terminal screws that need to be replaced can be replaced, so that it is possible to eliminate waste that would otherwise occur when replacing the terminal screws.

また、請求項2に記載の端子台によれば、端子ねじが端子ねじ落下防止部に到達しただけでは、端子ねじを取り出すことができないように構成したので、端子片との螺合が解除された端子ねじが端子台部から落下するのをより確実に防止することができる。   In addition, according to the terminal block of the second aspect, since the terminal screw cannot be taken out only by reaching the terminal screw fall prevention portion, the screwing with the terminal piece is released. It is possible to more reliably prevent the terminal screw from falling from the terminal block.

以下図面を参照して、本発明の好適な実施形態について説明する。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

図1に示す端子台1は、例えば、電気機器としてのスイッチング電源装置2等に取付固定され、外部端子3を接続する端子台本体4を有する。   A terminal block 1 shown in FIG. 1 includes a terminal block body 4 that is attached and fixed to, for example, a switching power supply device 2 as an electric device and connects an external terminal 3.

端子台本体4は、樹脂などの絶縁性材料で形成され、一方向に複数(本実施形態では5個)の端子台部5a,5b,5c,5d,5eを区画形成して構成される。一例として、この端子台部5a,5b,5c,5d,5eは、AC100V系若しくはAC200V系の交流入力電圧が電力供給源としての商用交流電源(図示せず)から印加される入力端子5a,5bと、アース端子5cと、出力端子5d,5eとを備える。   The terminal block body 4 is formed of an insulating material such as resin, and is configured by partitioning and forming a plurality (five in this embodiment) of terminal block portions 5a, 5b, 5c, 5d, and 5e in one direction. As an example, the terminal blocks 5a, 5b, 5c, 5d, and 5e are input terminals 5a and 5b to which an AC input voltage of AC100V or AC200V is applied from a commercial AC power supply (not shown) as a power supply source. And an earth terminal 5c and output terminals 5d and 5e.

各端子台部5a,5b,5c,5d,5eは、前記一方向に直行し、スイッチング電源装置2に向かって延びる端子ねじ挿通穴6a,6b,6c,6d,6eと、前記一方向及び前記端子ねじ挿通穴6a,6b,6c,6d,6eに直行する方向に開口する外部端子挿通穴7a,7b,7c,7d,7eと、前記外部端子挿通穴7a,7b,7c,7d,7eに連通して設けられた覗き穴8a,8b,8c,8d,8eとを有する。このように構成された各端子台部5a,5b,5c,5d,5eは、隣り合う他の端子台部5a,5b,5c,5d,5eと立板9によって仕切られている。尚、2aはスイッチング電源装置2の外郭をなす筐体である。   Each of the terminal block portions 5a, 5b, 5c, 5d, and 5e is connected to the terminal screw insertion holes 6a, 6b, 6c, 6d, and 6e extending in the one direction and extending toward the switching power supply device 2; The external terminal insertion holes 7a, 7b, 7c, 7d, 7e that open in the direction perpendicular to the terminal screw insertion holes 6a, 6b, 6c, 6d, 6e and the external terminal insertion holes 7a, 7b, 7c, 7d, 7e There are peep holes 8a, 8b, 8c, 8d, and 8e provided in communication. Each terminal base part 5a, 5b, 5c, 5d, 5e configured in this way is partitioned from the other adjacent terminal base parts 5a, 5b, 5c, 5d, 5e by the standing plate 9. Reference numeral 2a denotes a casing that forms an outer shell of the switching power supply device 2.

次に端子台部5a,5b,5c,5d,5eの構成について図2を参照して詳細に説明する。尚、各端子台部5a,5b,5c,5d,5eの構成は、設置位置で特に異ならないので、端子台部5aを例に採り、端子台部5aについてのみ以下説明する。   Next, the configuration of the terminal block portions 5a, 5b, 5c, 5d, and 5e will be described in detail with reference to FIG. Since the configuration of each terminal block 5a, 5b, 5c, 5d, 5e is not particularly different depending on the installation position, only the terminal block 5a will be described below by taking the terminal block 5a as an example.

この端子台部5aは、端子ねじ挿通穴6aが、スイッチング電源装置2側ではない一側においてドライバー挿通穴11に連通している。ドライバー挿通穴11は、外部からねじ締め工具であるドライバーを差込み得るように形成されている。また、端子台部5aは、ねじ穴12が形成された端子片13と、前記ねじ穴12に螺合する端子ねじ14と、前記ねじ穴12との螺合が外れた端子ねじ14を保持する端子ねじ保持部15と、端子ねじ14を端子ねじ保持部15から取出し可能にする端子ねじ取出し部16とを有する。さらに、端子台部5aは、端子ねじ挿通穴6aの他側に設けられた端子片設置部17と、該端子片設置部17と仕切り板18を介して設けられた空洞部19とを有する。   In the terminal block 5a, the terminal screw insertion hole 6a communicates with the driver insertion hole 11 on one side that is not the switching power supply device 2 side. The driver insertion hole 11 is formed so that a screwdriver as a screw tightening tool can be inserted from the outside. The terminal block 5a holds a terminal piece 13 in which a screw hole 12 is formed, a terminal screw 14 that is screwed into the screw hole 12, and a terminal screw 14 that is unscrewed from the screw hole 12. A terminal screw holding portion 15 and a terminal screw extracting portion 16 that enables the terminal screw 14 to be extracted from the terminal screw holding portion 15 are provided. Furthermore, the terminal block part 5a has a terminal piece installation part 17 provided on the other side of the terminal screw insertion hole 6a, and a cavity part 19 provided via the terminal piece installation part 17 and the partition plate 18.

端子片13は、導電性材料で形成され、中央に例えばバーリング加工でフランジ20を形成し、該フランジ20の内面に雌ねじ(図示せず)を設けたねじ穴12と、両側に一方向へ折り曲げ形成した固定片部21とを備える。さらに、固定片部21の縁にある係止爪部22は、前記端子片設置部17の内面に食い込んで係止する。尚、端子片13の一側には、筐体2aの内部に向けて延びる図示しない接続部が形成されている。この接続部は、筐体2aの内部に配置されたスイッチング電源装置2の部品であるリード線(図示せず)を半田付け接続するために設けられている。   The terminal piece 13 is formed of a conductive material, and a flange 20 is formed in the center by, for example, burring, and a screw hole 12 having an internal thread (not shown) provided on the inner surface of the flange 20 and bent in one direction on both sides. And a fixed piece portion 21 formed. Further, the locking claw portion 22 at the edge of the fixed piece portion 21 bites into and locks the inner surface of the terminal piece installation portion 17. A connection portion (not shown) extending toward the inside of the housing 2a is formed on one side of the terminal piece 13. This connecting portion is provided for soldering and connecting a lead wire (not shown) which is a component of the switching power supply device 2 disposed inside the housing 2a.

端子ねじ14は、一般的なねじで使用される金属材料で形成され、先端側に雄ねじが形成された足部25と頭部26とからなる。足部25には、径小軸27が形成され、この径小軸27には座金保持体28が設けられている。一方、頭部26には十字溝29が設けられている。   The terminal screw 14 is made of a metal material used for general screws, and includes a foot portion 25 and a head portion 26 having a male screw formed on the tip side. A small diameter shaft 27 is formed on the foot portion 25, and a washer holder 28 is provided on the small diameter shaft 27. On the other hand, the head 26 is provided with a cross groove 29.

また、端子ねじ14には、座金31が設けられている。座金31は、端子ねじ14を回動自在に支持するものである。この座金31には、端子ねじ14が挿通可能な挿通穴32が形成されると共に、端子ねじ14の締め付けにより挿通穴32の内周縁が変形して、この挿通穴32の内径が縮径され、端子ねじ14の座金保持部28に係合する略円錐台形状の係合縁32が形成されている。   The terminal screw 14 is provided with a washer 31. The washer 31 supports the terminal screw 14 so as to be rotatable. The washer 31 is formed with an insertion hole 32 through which the terminal screw 14 can be inserted, and the inner peripheral edge of the insertion hole 32 is deformed by tightening the terminal screw 14, and the inner diameter of the insertion hole 32 is reduced. A substantially frustoconical engagement edge 32 that engages with the washer holding portion 28 of the terminal screw 14 is formed.

端子ねじ保持部15は、覗き穴8aの内縁に設けられた保持片で構成され、覗き穴8aの幅方向長さ(前記一方向長さ)を、端子ねじ14の頭部26の外形よりも短くするように突設されている。この端子ねじ保持部15のドライバー挿通穴11側において、本発明の特徴的構成である端子ねじ取出し部16が連続して設けられている。   The terminal screw holding portion 15 is constituted by a holding piece provided at the inner edge of the peep hole 8a, and the width direction length (the one-direction length) of the peep hole 8a is set to be larger than the outer shape of the head portion 26 of the terminal screw 14. Projected to be shorter. On the driver insertion hole 11 side of the terminal screw holding portion 15, a terminal screw extraction portion 16 which is a characteristic configuration of the present invention is continuously provided.

端子ねじ取出し部16は、端子ねじ14の頭部26よりも大きな穴で構成され、前記覗き穴8aと同じ方向に開口するように形成されている。この端子ねじ取出し部16には、端子ねじ落下防止部35が設けられている。この端子ねじ落下防止部35は、端子ねじ取出し部16を構成する穴に内設された2個の突起でなる。該端子ねじ落下防止部35は、端子ねじ取出し部16に到達した端子ねじ14が端子ねじ取出し部16の開口方向へ移動する場合に、該端子ねじ14の頭部26が当接係止する大きさ、位置に形成されている。   The terminal screw take-out portion 16 is formed with a hole larger than the head portion 26 of the terminal screw 14, and is formed so as to open in the same direction as the peep hole 8a. The terminal screw take-out portion 16 is provided with a terminal screw drop preventing portion 35. The terminal screw drop prevention portion 35 is composed of two protrusions provided in the holes constituting the terminal screw extraction portion 16. The terminal screw drop prevention portion 35 is large enough that the head 26 of the terminal screw 14 abuts and locks when the terminal screw 14 that has reached the terminal screw removal portion 16 moves in the opening direction of the terminal screw removal portion 16. Well, it is formed at the position.

尚、ドライバー挿通穴11は、端子ねじ14の頭部26の外径より小さい内径を有する。   The driver insertion hole 11 has an inner diameter smaller than the outer diameter of the head 26 of the terminal screw 14.

次に、上記のように構成された端子台1の作用及び効果について説明する。端子台1は、端子片13の一側から延びる前記接続部に、スイッチング電源装置2の構成部品(例えばチョークコイルやコンデンサ)のリード線を半田付け接続し、筐体2aに取り付けられる。このようにして、スイッチング電源装置2としての組立作業が完了する。   Next, the operation and effect of the terminal block 1 configured as described above will be described. The terminal block 1 is attached to the housing 2a by soldering and connecting lead wires of components (for example, a choke coil and a capacitor) of the switching power supply device 2 to the connecting portion extending from one side of the terminal piece 13. In this way, the assembly work as the switching power supply device 2 is completed.

上記スイッチング電源装置2に外部端子3つきのリード線3aを接続するには、ドライバー(図示せず)を端子台部5aに形成されたドライバー挿通穴11から挿入し、このドライバーの回動力を端子ねじ14の頭部26に形成した十字溝29に作用させることにより、端子ねじ14の頭部26を反時計回りに回して端子ねじ14を緩め、足部25とねじ穴12との螺合を解除する。足部25とねじ穴12の螺合が解除された端子ねじ14は、端子台部5aに形成された端子ねじ挿通穴6aの中を移動することが可能になる。   In order to connect the lead wire 3a with the external terminal 3 to the switching power supply device 2, a driver (not shown) is inserted from the driver insertion hole 11 formed in the terminal base portion 5a, and the rotational force of this driver is supplied to the terminal screw. By acting on the cross groove 29 formed on the head portion 26 of the 14, the head portion 26 of the terminal screw 14 is turned counterclockwise to loosen the terminal screw 14, and the screw engagement between the foot portion 25 and the screw hole 12 is released. To do. The terminal screw 14 released from the screw connection between the foot 25 and the screw hole 12 can move in the terminal screw insertion hole 6a formed in the terminal base 5a.

ここで、端子台部5aには覗き穴8aが形成されているが、覗き穴8aの幅方向長さ(前記一方向長さ)を、端子ねじ14の頭部26の外形よりも短くするように、端子ねじ保持部15を設けている。これにより、足部25とねじ穴12との螺合を解除したときに、端子ねじ14の頭部26は、端子ねじ保持部15に当接する。従って、端子台1は、端子ねじ14が覗き穴8aから落下することを防止できる。すなわち、端子ねじ14は、落下することなく端子ねじ挿通穴6a内をドライバー挿通穴11方向へ移動することができる。   Here, although the peephole 8a is formed in the terminal block portion 5a, the length in the width direction (the one-direction length) of the peephole 8a is made shorter than the outer shape of the head 26 of the terminal screw 14. In addition, a terminal screw holding portion 15 is provided. As a result, the head 26 of the terminal screw 14 comes into contact with the terminal screw holding portion 15 when the screwing between the foot portion 25 and the screw hole 12 is released. Therefore, the terminal block 1 can prevent the terminal screw 14 from dropping from the peep hole 8a. That is, the terminal screw 14 can move in the terminal screw insertion hole 6a toward the driver insertion hole 11 without dropping.

また、ドライバー挿通穴11は、頭部26の外径より小さい内径を有する。これにより、端子ねじ挿通穴6aの中を移動した端子ねじ14は、頭部26がドライバー挿通穴11の内縁に当接する。従って、端子台1は、端子ねじ14がドライバー挿通穴11から落下することを防止できる。   The driver insertion hole 11 has an inner diameter smaller than the outer diameter of the head 26. Accordingly, the head 26 of the terminal screw 14 that has moved through the terminal screw insertion hole 6 a comes into contact with the inner edge of the driver insertion hole 11. Therefore, the terminal block 1 can prevent the terminal screw 14 from dropping from the driver insertion hole 11.

頭部26がドライバー挿通穴11の内縁に当接すると同時に、端子ねじ14は、端子ねじ取出し部16に到達する。この端子ねじ取出し部16には、端子ねじ落下防止部35が設けられている。これにより、端子ねじ14が端子台部5a内を移動して、端子ねじ取出し部16に到達した場合であっても、頭部26が、端子ねじ落下防止部35に当接し、そのままでは、頭部26が端子ねじ落下防止部35を通過することができない。従って、端子台1は、端子ねじ14が端子ねじ取出し部16から不意に落下することを防止できる。   At the same time as the head portion 26 abuts against the inner edge of the driver insertion hole 11, the terminal screw 14 reaches the terminal screw extraction portion 16. The terminal screw take-out portion 16 is provided with a terminal screw drop preventing portion 35. As a result, even when the terminal screw 14 moves in the terminal base part 5a and reaches the terminal screw take-out part 16, the head 26 abuts on the terminal screw drop prevention part 35, The part 26 cannot pass through the terminal screw drop prevention part 35. Therefore, the terminal block 1 can prevent the terminal screw 14 from unexpectedly dropping from the terminal screw extraction portion 16.

このようにして、端子台1は、端子台部5aから端子ねじ14が落下することを防止しながら、端子ねじ14を端子片13から引き離すように端子台部5a内を移動させることができる。このとき、座金31と端子片13との間には、外部端子3を挿入するに十分な隙間が確保される(図3)。端子台部5aには、覗き穴8aを設けたことにより、上記隙間を視認することができる。   In this way, the terminal block 1 can be moved in the terminal block 5a so as to separate the terminal screw 14 from the terminal piece 13 while preventing the terminal screw 14 from dropping from the terminal block 5a. At this time, a gap sufficient to insert the external terminal 3 is secured between the washer 31 and the terminal piece 13 (FIG. 3). By providing the terminal block 5a with the peep hole 8a, the gap can be visually recognized.

上記隙間ができたことを確認したら、座金31と端子片13との間に外部端子3を挿入する。座金31と端子片13との間に外部端子3を挿入したら、端子ねじ14を端子片13に締付ける方向に回動する。このとき、上記したように端子ねじ14は端子台部5a内に保持されているから、端子ねじ14を手で持たずに、ドライバーをドライバー挿通穴11に挿通して頭部26を回して端子ねじ14を端子片13に締付けるだけで、外部端子3を座金31と端子片13とで狭持することができる。   When it is confirmed that the gap is formed, the external terminal 3 is inserted between the washer 31 and the terminal piece 13. When the external terminal 3 is inserted between the washer 31 and the terminal piece 13, the terminal screw 14 is rotated in a direction to be fastened to the terminal piece 13. At this time, as described above, since the terminal screw 14 is held in the terminal base portion 5a, the screw is inserted into the driver insertion hole 11 without turning the terminal screw 14 by hand, and the head 26 is turned to turn the terminal. The external terminal 3 can be held between the washer 31 and the terminal piece 13 only by tightening the screw 14 to the terminal piece 13.

さらに、座金31の端子ねじ挿通穴6aに挿通した状態で、端子片13のねじ穴に端子ねじ14を螺合して締付けると、係合縁32が変形して内径が縮径されて端子ねじ14の座金保持部28に係合され、端子ねじ14は容易に座金31に保持される。   Further, when the terminal screw 14 is screwed into the screw hole of the terminal piece 13 and tightened with the terminal screw 14 being inserted into the terminal screw insertion hole 6a of the washer 31, the engagement edge 32 is deformed and the inner diameter is reduced, thereby reducing the terminal screw. The terminal screw 14 is easily held by the washer 31 by being engaged with the 14 washer holding portions 28.

一方、締付け時などにおいて、端子ねじ14の頭部26に形成した十字溝29がつぶれるなどして、端子ねじ14を交換する必要が生じた場合について説明する。因みに従来の端子台では、端子ねじ保持部を設けたことにより、交換が必要になった端子ねじのみを端子台から取り出すことができなかった。   On the other hand, a case will be described in which it becomes necessary to replace the terminal screw 14 due to a crushed groove 29 formed in the head portion 26 of the terminal screw 14 at the time of tightening or the like. Incidentally, in the conventional terminal block, since the terminal screw holding portion is provided, only the terminal screw that needs to be replaced cannot be taken out from the terminal block.

これに対し、本発明の端子台1では、端子ねじ取出し部16を設けたことにより、交換が必要になった端子ねじ14を、必要に応じて容易に取り出すことができる。すなわち、端子ねじ14を取り出すには、先ず、端子ねじ14とねじ穴12との螺合を解除し、端子ねじ14をドライバー挿通穴11側へ移動させる。そして、端子ねじ14の頭部26をドライバー挿通穴11側に設けた端子ねじ取出し部16に位置合わせする(図3)。   On the other hand, in the terminal block 1 of the present invention, the terminal screw extraction portion 16 is provided, so that the terminal screw 14 that needs to be replaced can be easily taken out as necessary. That is, in order to take out the terminal screw 14, first, the screwing of the terminal screw 14 and the screw hole 12 is released, and the terminal screw 14 is moved to the driver insertion hole 11 side. Then, the head portion 26 of the terminal screw 14 is aligned with the terminal screw extracting portion 16 provided on the driver insertion hole 11 side (FIG. 3).

ここで、端子ねじ取出し部16には、端子ねじ落下防止部35が設けられているので、端子ねじ14の頭部26が端子ねじ取出し部16に到達しただけでは、端子ねじ14を端子台部5aから取り出すことはできない。   Here, since the terminal screw removal portion 16 is provided with the terminal screw drop prevention portion 35, the terminal screw 14 is simply connected to the terminal base portion when the head 26 of the terminal screw 14 reaches the terminal screw removal portion 16. It cannot be removed from 5a.

そこで、端子ねじ14を端子台部5aから取り出すには、端子ねじ14の頭部26を端子ねじ14の端子ねじ取出し部16の開口に向かって押す。そうすると、小片状の端子ねじ落下防止部35は、端子台部5aと同じ樹脂で形成されているので、端子ねじ14の頭部26に押されて弾性変形する。このようにして端子ねじ落下防止部35が弾性変形することにより、端子ねじ14の頭部26は端子ねじ落下防止部35を通過する。従って、端子台1は、端子ねじ14の頭部26が端子ねじ取出し部16から外部へ抜け出すことによって、端子ねじ14を端子台部5aから取り出すことができる。尚、足部25は覗き穴8aを通過して外部へ抜け出すことができる。   Therefore, in order to take out the terminal screw 14 from the terminal base portion 5a, the head 26 of the terminal screw 14 is pushed toward the opening of the terminal screw extracting portion 16 of the terminal screw 14. Then, since the small piece-like terminal screw fall prevention part 35 is formed of the same resin as the terminal block part 5a, it is pushed by the head part 26 of the terminal screw 14 and elastically deforms. Thus, the terminal screw drop prevention part 35 is elastically deformed, so that the head 26 of the terminal screw 14 passes through the terminal screw fall prevention part 35. Therefore, the terminal block 1 can take out the terminal screw 14 from the terminal block part 5a when the head 26 of the terminal screw 14 is pulled out from the terminal screw extracting part 16 to the outside. In addition, the foot part 25 can pass through the peep hole 8a and can come out to the outside.

反対に、交換部品としての新しい端子ねじ14を端子台部5aに取り付けるには、端子ねじ14の足部25を端子片13に向けた状態で、頭部26を端子ねじ取出し部16に合わせる。そして、端子ねじ14の頭部26を端子ねじ取出し部16に押し込む。このとき端子ねじ14の頭部26は、端子ねじ落下防止部35を弾性変形させることによって、端子ねじ落下防止部35を通過し、端子台部5a内に設置される。尚、足部25は覗き穴8aを通過して端子台部5a内に設置される。   On the other hand, in order to attach a new terminal screw 14 as a replacement part to the terminal base 5a, the head 26 is aligned with the terminal screw take-out portion 16 with the foot 25 of the terminal screw 14 facing the terminal piece 13. Then, the head portion 26 of the terminal screw 14 is pushed into the terminal screw removing portion 16. At this time, the head 26 of the terminal screw 14 passes through the terminal screw fall prevention part 35 by elastically deforming the terminal screw fall prevention part 35, and is installed in the terminal base part 5a. The foot portion 25 is installed in the terminal block portion 5a through the peephole 8a.

このようにして、本実施形態に係る端子台1は、交換が必要になった端子ねじ14のみを取出し、かつ、交換部品としての新しい端子ねじ14を端子台部5a内に設置することができる。従って、端子台1では、交換が必要な端子ねじ14のみを交換することができるので、従来、端子ねじの交換の際に生じていたい無駄を省くことができる。   In this way, the terminal block 1 according to the present embodiment can take out only the terminal screw 14 that needs to be replaced, and can install a new terminal screw 14 as a replacement part in the terminal block portion 5a. . Therefore, in the terminal block 1, only the terminal screw 14 that needs to be replaced can be replaced, so that it is possible to eliminate waste that would otherwise occur when replacing the terminal screw.

本実施形態に係る端子台1は、端子ねじ保持部15を設けたことにより、端子片13との螺合が解除された端子ねじ14が、端子台部5aから落下するのを防止することができる。従って、端子台1では、ユーザが手で端子ねじ14を保持しなくても、ドライバー挿通穴11からドライバを挿通するだけで、端子ねじ14を締付けることができる。しかも本実施形態に係る端子台1では、作業中に端子ねじ14が紛失することを防止できると共に、活電部に落下することもないので、ショートして二次破壊を招くことを防止できる。   The terminal block 1 according to the present embodiment can prevent the terminal screw 14, which has been unscrewed from the terminal piece 13, from dropping from the terminal block portion 5 a by providing the terminal screw holding portion 15. it can. Therefore, in the terminal block 1, even if the user does not hold the terminal screw 14 by hand, the terminal screw 14 can be tightened only by inserting the driver through the driver insertion hole 11. Moreover, in the terminal block 1 according to the present embodiment, the terminal screw 14 can be prevented from being lost during the operation, and can be prevented from being dropped into the live part, so that it is possible to prevent short-circuiting and secondary destruction.

しかも、ドライバー挿通穴11は、端子ねじ14の外形より小さい内径を有することとした。これにより、ドライバー挿通穴11から端子ねじ14が落下することを防止できる。従って、端子台1を設けたスイッチング電源装置2が、どのような向きで設置されたとしても、確実に端子ねじ14の落下を防止することができる。   Moreover, the driver insertion hole 11 has an inner diameter smaller than the outer shape of the terminal screw 14. As a result, the terminal screw 14 can be prevented from dropping from the driver insertion hole 11. Therefore, it is possible to reliably prevent the terminal screw 14 from dropping regardless of the orientation of the switching power supply device 2 provided with the terminal block 1.

また、ここでの端子台1は、ドライバー挿通穴11側に、端子ねじ14を端子ねじ保持部15から取出し可能にする端子ねじ取出し部16を設けている。これにより、端子台1は、交換が必要になった端子ねじ14を取出し、かつ、交換部品としての新しい端子ねじ14を端子台部5a内に設置することができる。   Further, the terminal block 1 here is provided with a terminal screw extraction portion 16 that enables the terminal screw 14 to be extracted from the terminal screw holding portion 15 on the driver insertion hole 11 side. Thereby, the terminal block 1 can take out the terminal screw 14 which needed replacement | exchange, and can install the new terminal screw 14 as a replacement part in the terminal block part 5a.

しかも、端子ねじ取出し部16には、端子ねじ14を端子ねじ取出し部16から取出す際に、当該端子ねじ14に係止する端子ねじ落下防止部35を設けており、端子ねじ14が端子ねじ落下防止部35に到達しただけでは、端子ねじ14を取り出すことができないように構成されている。従って、端子台1は、端子片13との螺合が解除された端子ねじ14が、端子台部5aから落下するのをより確実に防止することができる。   In addition, the terminal screw unloading portion 16 is provided with a terminal screw drop prevention portion 35 that is locked to the terminal screw 14 when the terminal screw 14 is unloaded from the terminal screw unloading portion 16, and the terminal screw 14 is dropped. The terminal screw 14 cannot be taken out only by reaching the prevention part 35. Accordingly, the terminal block 1 can more reliably prevent the terminal screw 14 that has been unscrewed from the terminal piece 13 from dropping from the terminal block portion 5a.

さらに、端子ねじ落下防止部35は、端子ねじ取出し部16を構成する穴に内設された突起で構成される。これにより、端子ねじ落下防止部35は、端子ねじ取出し部16の開口に向かって端子ねじ14を押すだけで、容易に端子ねじ14の頭部26に押されて変形し得る。従って、端子台1は、不意に端子ねじ14が落下するのを防止すると共に、必要に応じて容易に端子ねじ14を取り出すことができる。   Further, the terminal screw drop prevention part 35 is constituted by a protrusion provided in a hole constituting the terminal screw extraction part 16. As a result, the terminal screw fall prevention part 35 can be easily pushed and deformed by the head 26 of the terminal screw 14 simply by pushing the terminal screw 14 toward the opening of the terminal screw extraction part 16. Therefore, the terminal block 1 can prevent the terminal screw 14 from unexpectedly dropping and can easily take out the terminal screw 14 as needed.

本実施形態に係る端子台1は、端子ねじ保持部15、端子ねじ取出し部16、及び、端子ねじ落下防止部35を備えるから、上記第1実施形態と同様の効果を得ることができる。   Since the terminal block 1 according to the present embodiment includes the terminal screw holding portion 15, the terminal screw extraction portion 16, and the terminal screw drop prevention portion 35, the same effects as those of the first embodiment can be obtained.

本発明は、本実施形態に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。例えば、上記した実施形態では、端子ねじ落下防止部35は、端子ねじ取出し部16に設けた場合について説明したが、本発明はこれに限らず、端子台部5a内を移動する端子ねじ14の頭部26が、端子ねじ取出し部16に到達する手前に端子ねじ落下防止部35を設けることとしてもよい。すなわち、この場合、端子ねじ落下防止部35は、端子ねじ14が不意に端子ねじ取出し部16まで移動するのを遮ることにより、端子ねじ14の落下を防止することができる。   The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, in the above-described embodiment, the case where the terminal screw drop prevention portion 35 is provided in the terminal screw extraction portion 16 has been described, but the present invention is not limited to this, and the terminal screw 14 moving in the terminal base portion 5a is not limited thereto. The terminal screw drop prevention part 35 may be provided before the head part 26 reaches the terminal screw extraction part 16. That is, in this case, the terminal screw fall prevention part 35 can prevent the terminal screw 14 from dropping by blocking the terminal screw 14 from moving to the terminal screw take-out part 16 unexpectedly.

また、上記した実施形態では、端子ねじ落下防止部は、2個の突起で構成した場合について説明したが、端子ねじ取出し部から端子ねじが不意に落下することを防止できれば足り、従って、少なくとも一箇所、突起を設けることとしてもよい。   Further, in the above-described embodiment, the case where the terminal screw drop prevention portion is configured by two protrusions has been described. However, it is sufficient that the terminal screw can be prevented from unexpectedly dropping from the terminal screw extraction portion. It is good also as providing a location and protrusion.

また、上記した実施形態では、端子ねじ落下防止部は、2個の突起で構成した場合について説明したが、本発明はこれに限らず、図4に示すようにアクリルカバー40で端子ねじ取出し部16を塞ぐこととしてもよい。このように端子ねじ落下防止部をアクリルカバー40で構成することにより、内部の端子ねじ14を視認できると共に、確実に端子ねじ14の落下を防止することができる。   Further, in the above-described embodiment, the case where the terminal screw drop prevention portion is configured by two protrusions has been described. However, the present invention is not limited to this, and the terminal screw extraction portion is formed by the acrylic cover 40 as shown in FIG. It is good also as blocking 16. By configuring the terminal screw fall prevention portion with the acrylic cover 40 in this manner, the internal terminal screw 14 can be visually recognized, and the terminal screw 14 can be reliably prevented from falling.

本発明に係る端子台の構成を示す全体斜視図である。It is a whole perspective view which shows the structure of the terminal block which concerns on this invention. 同上、端子台部の構成を示す断面図である。It is sectional drawing which shows the structure of a terminal block part same as the above. 同上、使用状態を示す断面図である。It is sectional drawing which shows a use condition same as the above. 同上、変形例を示す斜視図である。It is a perspective view which shows a modification as same as the above. 従来例を示す断面図である。It is sectional drawing which shows a prior art example.

符号の説明Explanation of symbols

1 端子台
12 ねじ穴
13 端子片
14 端子ねじ
15 端子ねじ保持部
16 端子ねじ取出し部
35 端子ねじ落下防止部
40 アクリルカバー(端子ねじ落下防止部)
1 Terminal block
12 Screw hole
13 Terminal strip
14 Terminal screw
15 Terminal screw holder
16 Terminal screw outlet
35 Terminal screw drop prevention
40 Acrylic cover (Terminal screw drop prevention part)

Claims (2)

ねじ穴が形成された端子片と、
前記ねじ穴に螺合する端子ねじと、
前記ねじ穴との螺合が外れた前記端子ねじを保持する端子ねじ保持部とを備えた端子台において、
前記端子ねじを前記端子ねじ保持部から取出し可能にする端子ねじ取出し部を備えることを特徴とする端子台。
A terminal strip formed with screw holes;
A terminal screw screwed into the screw hole;
In a terminal block comprising a terminal screw holding portion that holds the terminal screw that has been unscrewed from the screw hole,
A terminal block comprising a terminal screw take-out portion that enables the terminal screw to be taken out from the terminal screw holding portion.
さらに、前記端子ねじを前記端子ねじ取出し部から取出す際に、当該端子ねじに係止する端子ねじ落下防止部を備えることを特徴とする請求項1記載の端子台。   2. The terminal block according to claim 1, further comprising a terminal screw fall prevention portion that is engaged with the terminal screw when the terminal screw is taken out from the terminal screw take-out portion.
JP2007162833A 2007-06-20 2007-06-20 Terminal block Expired - Fee Related JP4900875B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007162833A JP4900875B2 (en) 2007-06-20 2007-06-20 Terminal block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007162833A JP4900875B2 (en) 2007-06-20 2007-06-20 Terminal block

Publications (2)

Publication Number Publication Date
JP2009004176A true JP2009004176A (en) 2009-01-08
JP4900875B2 JP4900875B2 (en) 2012-03-21

Family

ID=40320345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007162833A Expired - Fee Related JP4900875B2 (en) 2007-06-20 2007-06-20 Terminal block

Country Status (1)

Country Link
JP (1) JP4900875B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012028229A (en) * 2010-07-26 2012-02-09 Digital Electronics Corp Power supply connection structure
CN103094723A (en) * 2011-10-28 2013-05-08 町洋企业股份有限公司 Improved locking wire structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5158889A (en) * 1974-11-19 1976-05-22 Omron Tateisi Electronics Co
JPH08306293A (en) * 1995-05-10 1996-11-22 Fuji Electric Co Ltd Terminal relay with finger protector
JP2006107878A (en) * 2004-10-04 2006-04-20 Densei Lambda Kk Terminal block structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5158889A (en) * 1974-11-19 1976-05-22 Omron Tateisi Electronics Co
JPH08306293A (en) * 1995-05-10 1996-11-22 Fuji Electric Co Ltd Terminal relay with finger protector
JP2006107878A (en) * 2004-10-04 2006-04-20 Densei Lambda Kk Terminal block structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012028229A (en) * 2010-07-26 2012-02-09 Digital Electronics Corp Power supply connection structure
CN103094723A (en) * 2011-10-28 2013-05-08 町洋企业股份有限公司 Improved locking wire structure

Also Published As

Publication number Publication date
JP4900875B2 (en) 2012-03-21

Similar Documents

Publication Publication Date Title
US7597594B2 (en) Electrical connecting terminal
CA2503909C (en) Electrical wiring device
US11721961B2 (en) Mounting mechanism for an electrical device
EP3159972B1 (en) Switch wire connection device
EP3159973B1 (en) Switch wire connection device
JP4900875B2 (en) Terminal block
US8284542B2 (en) Circuit breaker with improved tie-down accessory
US20100236908A1 (en) Circuit breakers with lug screw retention and methods for manufacturing same
US20160134042A1 (en) Electrical connector
US7479030B2 (en) Quick clip assembly for strap element of electrical receptacle
US6275126B1 (en) Molded case power switch with secondary cover removably secured by quick release fasteners
JP2017016934A (en) Wiring unit
US6281771B1 (en) Molded case power switch with secondary cover removably secured by captured rotatable nut
US6969802B1 (en) Electrical connector
JP2009158259A (en) Attaching structure of copper bar
JP5393138B2 (en) Earth connection structure and lighting fixture
JP2000348792A (en) Terminal board
JP2005149757A (en) Terminal structure of circuit breaker
JP2009289685A (en) Locking cap of connector fixing screw
JP2005197012A (en) Mounting structure of connector for base board
JP2001266968A (en) Screw to tightly fasten wire to terminal board, and terminal board which uses it
JP2006161997A (en) Setting body and screw fixing member
JP2009238570A (en) Grounding terminal
JP2008270393A (en) Electric/electronic device
JP2007179748A (en) Connection device for electric equipment

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090313

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110121

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110214

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110415

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110613

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110913

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20110921

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20111212

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

R150 Certificate of patent or registration of utility model

Ref document number: 4900875

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20111225

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150113

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees