WO2022153556A1 - Terminal block - Google Patents

Terminal block Download PDF

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Publication number
WO2022153556A1
WO2022153556A1 PCT/JP2021/008145 JP2021008145W WO2022153556A1 WO 2022153556 A1 WO2022153556 A1 WO 2022153556A1 JP 2021008145 W JP2021008145 W JP 2021008145W WO 2022153556 A1 WO2022153556 A1 WO 2022153556A1
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WO
WIPO (PCT)
Prior art keywords
electric wire
terminal block
guide groove
elastic body
holding position
Prior art date
Application number
PCT/JP2021/008145
Other languages
French (fr)
Japanese (ja)
Inventor
晋也 岩崎
Original Assignee
オムロン株式会社
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Filing date
Publication date
Application filed by オムロン株式会社 filed Critical オムロン株式会社
Publication of WO2022153556A1 publication Critical patent/WO2022153556A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel

Definitions

  • the present invention relates to a terminal block used for connecting wiring in, for example, a PLC CPU unit or various I / O units.
  • Patent Document 1 discloses a terminal block portion in which the dimension of the inclined surface in the direction of inserting the electric wire into the electric wire insertion port is set to the dimension for removing the insulating coating of the electric wire.
  • Patent Document 2 it is attached to the terminal block so that the distance from the cover-side hole forming portion forming the cover-side electric wire insertion hole to the electrode is longer than the length of the exposed core wire (conductor portion) having a predetermined length inserted into the electrode.
  • the terminal block cover to be used is disclosed.
  • Japanese Patent Publication Japanese Unexamined Patent Publication No. 2000-24347
  • Japanese Patent Publication Japanese Patent Laid-Open No. 2013-127769
  • the electric wire when the electric wire is a rigid single wire or a stranded wire having a rod terminal, stable connection can be realized only by inserting the tip into the electric wire insertion port.
  • the connection position of the electric wire by the elastic body is unstable. That is, there is a possibility that the connection position of the electric wire by the elastic body is biased in the front-rear direction or the left-right direction. Due to such a bias in the connection position of the electric wire, there is a problem that the electric wire may not be properly connected to the terminal block.
  • One aspect of the present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal block capable of maintaining contact quality and improving unstable wiring work.
  • the terminal block according to one aspect of the present invention is provided in the accommodating portion for accommodating the electric wire to be inserted, the introduction portion for guiding the electric wire to the accommodating portion, and the accommodating portion.
  • a terminal block provided with an elastic body that holds the inserted electric wire by pressing it against one wall surface of the accommodating portion at a predetermined holding position and electrically connects to the electric wire. Therefore, a guide groove is provided on the inner surface of the introduction portion at a corresponding position corresponding to the holding position in the opening of the introduction portion.
  • the present embodiment an embodiment according to one aspect of the present invention (hereinafter, also referred to as “the present embodiment”) will be described with reference to the drawings.
  • the embodiments described below are merely examples of the present invention in all respects. Needless to say, various improvements and modifications can be made without departing from the scope of the present invention. That is, in carrying out the present invention, a specific configuration according to the embodiment may be appropriately adopted.
  • FIG. 1 is a front view of the PLC system 1000 according to the embodiment of the present invention.
  • the PLC system 1000 has a configuration in which a CPU unit 1001 and a plurality of various I / O units 1002 are connected.
  • the CPU unit 1001 includes one terminal block 1
  • each of the various I / O units 1002 includes two terminal blocks 1.
  • the I / O unit 1002 may include one terminal block 1.
  • Each terminal block 1 includes an insulating housing 2 and a plurality of terminal connection portions 3 provided inside the housing 2.
  • the PLC system 1000 performs predetermined input / output control on the device connected to the terminal block 1.
  • the housing 2 has a plurality of accommodating portions 21 each accommodating the terminal connecting portion 3, and a front wall 2a which is a wall surface on the side to which the terminal of the device is connected.
  • the front wall 2a is provided with a plurality of electric wire insertion ports 22 and a plurality of jig insertion ports 23, which are openings of the respective accommodating portions 21.
  • the number of terminal connection portions 3 included in the terminal block 1 is 16. That is, since the CPU unit 1001 includes one terminal block 1, the number of terminal connection portions 3 included in the CPU unit 1001 is 16, and various I / O units 1002 include two terminal blocks 1. Therefore, the number of terminal connection portions 3 included in the various I / O units 1002 is 32.
  • the number of terminal connection portions 3 included in the terminal block 1 is not limited to this.
  • the terminal block 1 in each unit is provided with a number of electric wire insertion ports 22 and jig insertion ports 23 corresponding to the number of terminal connection portions 3.
  • the electric wire insertion port 22 is a substantially circular opening for inserting an electric wire. Wires having various wire diameters are connected to the wire insertion port 22 depending on the device connected to the terminal block 1.
  • the plurality of electric wire insertion ports 22 have substantially the same inner diameter. Further, the plurality of electric wire insertion ports 22 have an inner diameter so that electric wires having various electric wire diameters (thin wire, thick wire, a part of extra-thick wire) can be connected.
  • the plurality of electric wire insertion ports 22 may have different inner diameters depending on the device connected to the terminal block 1.
  • the jig insertion port 23 is a substantially square opening for inserting a jig when inserting or removing an electric wire.
  • a flat-blade screwdriver can be used as the jig.
  • FIG. 1 shows the form of the terminal block 1 provided in the PLC system 1000, but the terminal block 1 of the present embodiment is not limited to this form.
  • FIGS. 2 to 8 show a part of the terminal block 101 corresponding to one accommodating portion 21.
  • FIG. 2 is a front view (reference numeral 2A of FIG. 2) and a cross-sectional view (reference numeral 2B of FIG. 2) of the terminal block 101 in a state where the electric wire 5 is not inserted into the terminal block 101.
  • FIG. 3 is a front view (reference numeral 3A of FIG. 3) and a cross-sectional view (reference numeral 3B of FIG. 3) of the terminal block 101 in a state where the electric wire 5 is appropriately inserted into the terminal block 101.
  • the terminal block 101 includes a housing 2 and a terminal connection portion 3.
  • the housing 2 includes a front wall 2a, a side wall 2b, and a rear wall 2c. In addition, a housing portion 21 is formed inside the housing 2.
  • the front wall 2a is provided with an electric wire insertion port 22 and a jig insertion port 23 as openings of the housing 2.
  • the side of the terminal block 101 where the front wall 2a is located will be described as the front, the opposite side as the rear, the left side facing the front as the left side, and the right side as the right side. Further, the side of the front wall 2a where the jig insertion port 23 is located will be described as an upper side, and the opposite side thereof will be described as a lower side.
  • the electric wire 5 inserted into the electric wire insertion port 22 includes a conductor portion 51 (strip portion) having a predetermined length exposed by peeling off the coating of the electric wire 5 halfway, and a covering portion 52 (non-strip portion) covered with a coating. To be equipped.
  • the housing 2 has an electric wire passage portion (introduction portion) 61 and a jig passage portion 62.
  • the electric wire passage portion 61 is a passage extending from the electric wire insertion port 22 to the accommodating portion 21.
  • the electric wire passage portion 61 is a passage for guiding the electric wire 5 inserted from the electric wire insertion port 22 to the elastic body 32 described later.
  • the electric wire passage portion 61 and the accommodating portion 21 may be continuously made of the same material. In order to properly guide the electric wire 5 to the elastic body 32, it is preferable that the cross-sectional area of the electric wire passage portion 61 in the cross section orthogonal to the front-rear direction decreases toward the rear.
  • the opening on the rear side of the electric wire passage portion 61 has an inner diameter equal to or larger than a predetermined electric wire diameter. ..
  • the jig passage portion 62 is a passage extending from the jig insertion port 23 to the accommodating portion 21.
  • the jig passage portion 62 is a passage for guiding the jig inserted from the jig insertion port 23 to the elastic body 32 described later.
  • the jig passage portion 62 and the accommodating portion 21 may be continuously made of the same material.
  • the terminal connection portion 3 includes a terminal electrode portion 31 and an elastic body 32.
  • the terminal electrode portion 31 is composed of an upper horizontal plate portion 31a, a vertical plate portion 31b, and a lower horizontal plate portion 31c.
  • the upper horizontal plate portion 31a comes into contact with the upper portion of the side wall 2b and extends in the front-rear direction.
  • the vertical plate portion 31b comes into contact with the rear wall 2c and extends in the vertical direction.
  • the lower horizontal plate portion 31c comes into contact with the lower portion of the side wall 2b and extends in the front-rear direction.
  • the terminal electrode portion 31 is made of a conductor and is electrically connected to the electric wire 5 when the electric wire 5 is inserted.
  • the elastic body 32 is a U-shaped leaf spring composed of a metal plate.
  • the elastic body 32 is, for example, a member formed by bending a central portion in the length direction of a flat metal plate. One end of the elastic body 32 is in contact with the upper horizontal plate portion 31a. When the electric wire 5 is not inserted, the other end of the elastic body 32 is in contact with the lower horizontal plate portion 31c (see reference numeral 2B in FIG. 2). When the electric wire 5 is inserted, the other end of the elastic body 32 comes into contact with the conducting wire portion 51 and presses against the conducting wire portion 51 (see reference numeral 3B in FIG. 3). As a result, the elastic body 32 is electrically connected to the electric wire 5. Further, the elastic body 32 holds the electric wire 5 between the elastic body 32 and the lower horizontal plate portion 31c.
  • the shape of the elastic body 32 is not limited to the shapes shown in FIGS. 2 to 8.
  • the jig is inserted from the jig insertion port 23.
  • the jig is inserted into the accommodating portion 21 via the jig passage portion 62.
  • the jig comes into contact with the other end of the elastic body 32.
  • the other end of the elastic body 32 is pushed upward. As a result, a space for accommodating the electric wire 5 is formed in the lower part of the accommodating portion 21.
  • the electric wire 5 is inserted from the electric wire insertion port 22.
  • the electric wire 5 is inserted into the accommodating portion 21 via the electric wire passage portion 61.
  • the electric wire 5 is accommodated in a space formed in the lower portion of the accommodating portion 21 by a jig.
  • the jig is inserted from the jig insertion port 23.
  • the jig is inserted into the accommodating portion 21 via the jig passage portion 62.
  • the jig comes into contact with the other end of the elastic body 32.
  • the other end of the elastic body 32 is pushed upward. As a result, the electric wire 5 is released from the holding of the elastic body 32.
  • the electric wire 5 is pulled out from the electric wire insertion port 22.
  • the jig is pulled out from the jig insertion port 23.
  • the electric wire 5 is pulled out from the terminal block 101.
  • the electric wire 5 may be inserted into the accommodating portion 21 from the electric wire insertion port 22 without using a jig. That is, the elastic body 32 may be pushed up by the rigidity of the electric wire 5 to be in a holding state.
  • the electric wire insertion port 22 is provided so that electric wires having various electric wire diameters can be connected. Therefore, the inner diameter of the electric wire insertion port 22 is provided to be larger than the electric wire diameter of the thin wire. Therefore, in the conventional terminal block 101, when the electric wire 5 is a thin wire, the connection position of the electric wire 5 by the elastic body 32 becomes unstable, and the electric wire 5 may be improperly inserted into the terminal block 101. There is.
  • FIG. 4 is a front view (reference numeral 4A of FIG. 4) and a cross-sectional view (reference numeral 4B of FIG. 4) of the terminal block 101 in an example of a state in which the electric wire 5 is improperly inserted into the terminal block 101.
  • FIG. 5 is a front view (reference numeral 5A of FIG. 5) and a cross-sectional view (reference numeral 5B of FIG. 5) of the terminal block 101 in another example in which the electric wire 5 is improperly inserted into the terminal block 101.
  • FIG. 6 is a front view of the terminal block 101 in still another example in which the electric wire 5 is improperly inserted into the terminal block 101.
  • FIG. 5 is a front view (reference numeral 5A of FIG. 5) and a cross-sectional view (reference numeral 5B of FIG. 5) of the terminal block 101 in another example in which the electric wire 5 is improperly inserted into the terminal block 101.
  • FIG. 6 is a front view of the terminal block 101
  • FIG. 7 is a schematic cross-sectional view showing the positional relationship between the elastic body 32 and the electric wire 5 in still another example in which the electric wire 5 is improperly inserted into the terminal block 101.
  • FIG. 8 is a perspective view (reference numeral 8A of FIG. 8) and a front view (reference numeral 8B of FIG. 8) of the elastic body 32 in still another example in which the electric wire 5 is improperly inserted into the terminal block 101. be.
  • FIGS. 4 to 8 a specific example of a state in which the electric wire 5 is improperly inserted into the terminal block 101 will be described with reference to FIGS. 4 to 8.
  • FIG. 4 shows a state in which the insertion distance of the electric wire 5 into the terminal block 101 is longer than that shown in FIG. 3, and the covering portion 52 is located at the holding position P.
  • the elastic body 32 comes into contact with the covering portion 52 and does not come into contact with the conducting wire portion. Therefore, if the insertion distance for inserting the electric wire 5 into the terminal block 101 is too long, the elastic body 32 will not be electrically connected to the electric wire 5.
  • FIG. 5 shows a state in which the insertion distance of the electric wire 5 into the terminal block 101 is shorter than that shown in FIG. 3, and the tip of the conducting wire portion 51 is located at the holding position P.
  • the elastic body 32 holds the tip of the conducting wire portion 51. Therefore, if the insertion distance for inserting the electric wire 5 into the terminal block 101 is too short, there is a high risk that the conducting wire portion 51 will be disengaged from being held by the elastic body 32.
  • FIG. 6 shows a state in which the electric wire 5 is inserted at the left end (reference numeral 6A in FIG. 6) or the right end (reference numeral 6B in FIG. 6) of the electric wire insertion port 22.
  • the electric wire 5 is held by the elastic body 32 between the right end of the elastic body 32 and the right end of the lower horizontal plate portion 31c.
  • the elastic body 32 bends to the left because the connection position of the electric wire 5 by the elastic body 32 is biased to the right. Therefore, the electric wire 5 may be disengaged from being held by the elastic body 32.
  • the terminal block 1 includes a first guide groove 7 (see FIGS. 9 to 12) or a second guide groove 207 (see FIG. 13) that guides the electric wire 5 to the holding position P.
  • a first guide groove 7 see FIGS. 9 to 12
  • a second guide groove 207 see FIG. 13
  • FIG. 9 is a cross-sectional view of the terminal block 1 according to the first embodiment of the present invention.
  • FIG. 10 is a front view of the terminal block 1 in a state where the electric wire 5 is inserted into the terminal block 1 (reference numeral 10A in FIG. 10) and in a state where the electric wire 5 is not inserted (reference numeral 10B in FIG. 10).
  • FIG. 11 is a perspective view of the terminal block 1 in a state where the electric wire 5 is inserted into the terminal block 1 (reference numeral 11A in FIG. 11) and in a state where the electric wire 5 is not inserted (reference numeral 11B in FIG. 11).
  • FIG. 10 is a front view of the terminal block 1 in a state where the electric wire 5 is inserted into the terminal block 1 (reference numeral 10A in FIG. 10) and in a state where the electric wire 5 is not inserted (reference numeral 11B in FIG. 11).
  • the terminal block 1 is different from the terminal block 101 in that it includes a first guide groove 7 that guides the electric wire 5 to the holding position P (see FIGS. 3 to 6).
  • the first guide groove 7 is provided in the electric wire passage portion 61. Specifically, the first guide groove 7 is provided on the inner surface of the electric wire passage portion 61 at the corresponding position P1 corresponding to the holding position P in the electric wire insertion port 22. Further, the first guide groove 7 extends in the front-rear direction from the corresponding position P1 toward the holding position P. In the example shown in FIGS. 9 to 12, the first guide groove 7 extends from the corresponding position P1 to just before the boundary between the electric wire passage portion 61 and the accommodating portion 21. The length of extension of the first guide groove 7 is not particularly limited, and may be extended to any position from the corresponding position P1 to the holding position P.
  • the first guide groove 7 has a bottom surface 7a, a side wall 7b, and a step portion 71.
  • the step portion 71 is a step that connects the bottom surface 7a of the first guide groove 7 and the inner surface of the electric wire passage portion 61 at one end of the first guide groove 7 at the rear (that is, in the insertion direction of the electric wire 5).
  • the cross section of the first guide groove 7 cut by a plane orthogonal to the insertion direction of the electric wire 5 is substantially trapezoidal.
  • the cross section is not limited to this, and any shape may be used as long as the electric wire 5 can be easily inserted.
  • the depth of the first guide groove 7 may be deeper toward the center in the cross section. That is, the cross section may be, for example, a semicircular shape, an inverted triangular shape, or the like.
  • the covering portion 52 abuts on the step portion 71.
  • the covering portion 52 prevents the covering portion 52 from invading the accommodating portion 21 side from the step portion 71, so that the state in which the covering portion 52 is held by the elastic body 32 and the electric wire 5 and the elastic body 32 become non-conducting is suppressed. can do.
  • the length of the conducting wire portion 51 is appropriately set, the tip of the conducting wire portion 51 will not be held by the elastic body 32. Therefore, as compared with the case where the tip of the conducting wire portion 51 is held by the elastic body 32, the risk that the conducting wire portion 51 is disengaged from being held by the elastic body 32 is also reduced. Therefore, since the first guide groove 7 has the stepped portion 71, the electric wire 5 can be inserted so as to be held by the elastic body 32 at an appropriate position in the length direction in the conducting wire portion 51.
  • the width of the first guide groove 7 may be gradually narrowed from the corresponding position P1 toward the holding position P. As a result, since the width of the first guide groove 7 is wide at the electric wire insertion port 22, the electric wire 5 can be easily inserted into the first guide groove 7.
  • the depth of the first guide groove 7 may gradually become shallower from the corresponding position P1 toward the holding position P. As a result, since the first guide groove 7 is deeply formed in the electric wire insertion port 22, the electric wire 5 can be easily inserted into the first guide groove 7.
  • FIG. 13 is a cross-sectional view of the terminal block 201 according to the second embodiment of the present invention.
  • the terminal block 201 according to the second embodiment is different from the terminal block 1 in that the second guide groove 207 is provided instead of the first guide groove 7.
  • the second guide groove 207 is different from the first guide groove 7 in that it does not have a stepped portion 71. That is, in the second guide groove 207, at one end of the second guide groove 207 in the insertion direction of the electric wire 5, the boundary portion between the bottom surface 207a of the second guide groove 207 and the inner surface of the electric wire passage portion 61 is smoothly continuous. ..
  • the step portion 71 is provided in order to prevent the covering portion 52 from invading to the holding position P.
  • the covering portion 52 penetrates to the holding position P. There is nothing to do. Therefore, in this case, it is possible to give priority to smoother insertion of the electric wire 5 into the accommodating portion 21 by eliminating the step portion 71.
  • the terminal block according to one aspect of the present invention is provided in the accommodating portion for accommodating the electric wire to be inserted, the introduction portion for guiding the electric wire to the accommodating portion, and the accommodating portion.
  • a terminal block provided with an elastic body that holds the inserted electric wire by pressing it against one wall surface of the accommodating portion at a predetermined holding position and electrically connects to the electric wire. Therefore, a guide groove is provided on the inner surface of the introduction portion at a corresponding position corresponding to the holding position in the opening of the introduction portion.
  • the terminal block is provided with a guide groove for guiding the electric wire to the holding position.
  • the electric wire can be appropriately inserted into the terminal block. That is, it is possible to maintain the contact quality of the terminal block.
  • the guide groove is provided in the opening of the introduction portion, it is possible to indicate to the user the position (corresponding position) for inserting the electric wire. Therefore, it is possible to stabilize the connection work of inserting the electric wire into the electric wire insertion port.
  • the guide groove may be extended from the corresponding position toward the holding position. According to the above configuration, the electric wire can be inserted toward the holding position by inserting the electric wire into the terminal block along the guide groove. That is, the electric wire can be reliably held at the holding position.
  • the width of the guide groove may be gradually narrowed from the corresponding position toward the holding position. According to the above configuration, since the width of the guide groove is wide at the opening, the electric wire can be easily inserted into the guide groove.
  • the depth of the guide groove may gradually become shallower from the corresponding position toward the holding position. According to the above configuration, since the guide groove is deeply formed in the opening, the electric wire can be easily inserted into the guide groove.
  • the guide groove may have a step portion which is a step connecting the bottom surface of the guide groove and the inner surface of the introduction portion.
  • the covering portion of the electric wire abuts on the step portion.
  • the covering portion is prevented from invading the accommodating portion side from the stepped portion, so that it is possible to suppress a state in which the covering portion is held by the elastic body and the electric wire and the elastic body become non-conducting.
  • the length of the conductor portion of the electric wire is appropriately set, the tip of the conductor portion will not be held by the elastic body. Therefore, the risk that the conducting wire portion is not held by the elastic body is lower than that in the case where the tip of the conducting wire portion is held by the elastic body. Therefore, since the guide groove has the stepped portion, the electric wire can be inserted so as to be held by the elastic body at an appropriate position in the length direction in the conducting wire portion.
  • the boundary portion between the bottom surface of the guide groove and the inner surface of the introduction portion may be smoothly continuous. According to the above configuration, the electric wire can be smoothly inserted into the terminal block as compared with the case where the guide groove has a stepped portion.
  • the depth of the guide groove may be deeper toward the center in a cross section cut by a plane orthogonal to the insertion direction of the electric wire. According to the above configuration, it is possible to easily guide the electric wire to the vicinity of the center of the holding position.
  • Terminal block 2 Housing 5 Electric wire 7 1st guide groove (guide groove) 21 Accommodating part 22 Electric wire insertion port (opening) 32 Elastic body 61 Electric wire passage (introduction) 71 Stepped part 207 Second guide groove (guide groove) P holding position P1 compatible position

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Abstract

The present invention makes it possible to maintain contact point quality and improve unstable wire-connection work. A terminal block (1) comprises: an accommodation part (21); an introduction part (61) that guides an electric wire into the accommodation part (21); and an elastic body (32) that is provided to the accommodation part, holds the electric wire at a prescribed holding position, and is electrically connected to the electric wire, wherein, on an inner surface of the introduction part, a guide groove (7) is provided at a corresponding position, of an opening (22) of the introduction part, corresponding to the holding position.

Description

端子台Terminal block
　本発明は、例えばＰＬＣのＣＰＵユニットや各種Ｉ／Ｏユニット等において、配線を接続するために使用される端子台に関する。 The present invention relates to a terminal block used for connecting wiring in, for example, a PLC CPU unit or various I / O units.
　従来、電線の導線部を適切に接続保持することができる端子台が知られている。例えば、特許文献１には、電線挿入口への電線の挿入方向における傾斜面の寸法が、電線の絶縁被覆を除去する寸法に設定されている端子台部が開示されている。特許文献２には、カバー側電線挿入孔を形成するカバー側孔形成部から電極までの距離が電極に挿入される所定長の露出芯線（導線部）の長さより長くなるように端子台に取り付けられる端子台カバーが開示されている。 Conventionally, a terminal block that can appropriately connect and hold the conductor portion of an electric wire is known. For example, Patent Document 1 discloses a terminal block portion in which the dimension of the inclined surface in the direction of inserting the electric wire into the electric wire insertion port is set to the dimension for removing the insulating coating of the electric wire. In Patent Document 2, it is attached to the terminal block so that the distance from the cover-side hole forming portion forming the cover-side electric wire insertion hole to the electrode is longer than the length of the exposed core wire (conductor portion) having a predetermined length inserted into the electrode. The terminal block cover to be used is disclosed.
日本国公開特許公報「特開２０００－２４３４７８号公報」Japanese Patent Publication "Japanese Unexamined Patent Publication No. 2000-24347" 日本国公開特許公報「特開２０１３－１２７９６９号公報」Japanese Patent Publication "Japanese Patent Laid-Open No. 2013-127769"
　上述のような端子台において、電線が剛性のある単線あるいは棒端子を有する撚線である場合については、先端を電線挿入口に挿入するだけで安定した結線が実現できる。しかしながら、電線が剛性の弱い単線（細線）あるいは棒端子を有さない撚線である場合については、弾性体による電線の接続位置が不安定である。すなわち、弾性体による電線の接続位置が前後あるいは左右方向に偏ってしまう可能性がある。このような電線の接続位置の偏りにより、電線が適切に端子台に接続されない可能性があるといった問題がある。 In the terminal block as described above, when the electric wire is a rigid single wire or a stranded wire having a rod terminal, stable connection can be realized only by inserting the tip into the electric wire insertion port. However, when the electric wire is a single wire (thin wire) having low rigidity or a stranded wire having no rod terminal, the connection position of the electric wire by the elastic body is unstable. That is, there is a possibility that the connection position of the electric wire by the elastic body is biased in the front-rear direction or the left-right direction. Due to such a bias in the connection position of the electric wire, there is a problem that the electric wire may not be properly connected to the terminal block.
　本発明の一態様は、上記の問題点を鑑みてなされたものであり、その目的は、接点品質維持および不安定な結線作業の改善を実現することができる端子台を提供することにある。 One aspect of the present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal block capable of maintaining contact quality and improving unstable wiring work.
　上記の課題を解決するために、本発明の一態様に係る端子台は、挿入される電線を収容する収容部と、前記電線を前記収容部に導く導入部と、前記収容部に設けられ、挿入された前記電線に対して、所定の保持位置で前記収容部の一方の壁面に対して押圧することで前記電線を保持するとともに、前記電線と電気接続する弾性体と、を備える端子台であって、前記導入部の内面には、当該導入部の開口部における、前記保持位置に対応する対応位置にガイド溝が設けられている。 In order to solve the above problems, the terminal block according to one aspect of the present invention is provided in the accommodating portion for accommodating the electric wire to be inserted, the introduction portion for guiding the electric wire to the accommodating portion, and the accommodating portion. A terminal block provided with an elastic body that holds the inserted electric wire by pressing it against one wall surface of the accommodating portion at a predetermined holding position and electrically connects to the electric wire. Therefore, a guide groove is provided on the inner surface of the introduction portion at a corresponding position corresponding to the holding position in the opening of the introduction portion.
　本発明の一態様によれば、接点品質維持および不安定な結線作業の改善を実現することができる。 According to one aspect of the present invention, it is possible to maintain contact quality and improve unstable wiring work.
本発明の一実施形態に係るＰＬＣシステムの前面図である。It is a front view of the PLC system which concerns on one Embodiment of this invention. 端子台に電線が挿入されていない状態における、従来の端子台の前面図および断面図である。It is a front view and sectional view of the conventional terminal block in a state where an electric wire is not inserted in a terminal block. 端子台に電線が適切に挿入されている状態における、従来の端子台の前面図および断面図である。It is a front view and cross-sectional view of the conventional terminal block in a state where an electric wire is properly inserted into a terminal block. 端子台に電線が不適切に挿入されている状態の一例における、従来の端子台の前面図および断面図である。It is a front view and sectional view of the conventional terminal block in an example of a state in which an electric wire is improperly inserted into the terminal block. 端子台に電線が不適切に挿入されている状態の他の例における、従来の端子台の前面図および断面図である。It is a front view and sectional view of the conventional terminal block in another example of the state where the electric wire is improperly inserted into the terminal block. 端子台に電線が不適切に挿入されている状態のさらに他の例における、従来の端子台の前面図である。It is a front view of the conventional terminal block in still another example of the state where the electric wire is improperly inserted into the terminal block. 端子台に電線が不適切に挿入されている状態のさらに他の例における、弾性体と電線との位置関係を示す模式断面図である。It is a schematic cross-sectional view which shows the positional relationship between an elastic body and an electric wire in still another example of a state where an electric wire is improperly inserted into a terminal block. 端子台に電線が不適切に挿入されている状態のさらに他の例における、弾性体の斜視図および前面図である。It is a perspective view and the front view of the elastic body in still another example of the state where the electric wire is improperly inserted into the terminal block. 本発明の一実施形態に係る端子台の断面図である。It is sectional drawing of the terminal block which concerns on one Embodiment of this invention. 上記端子台の前面図である。It is a front view of the terminal block. 上記端子台の斜視図である。It is a perspective view of the said terminal block. 上記端子台の第１ガイド溝を拡大した拡大断面図である。It is an enlarged sectional view which expanded the 1st guide groove of the said terminal block. 本発明の他の実施形態に係る端子台の断面図である。It is sectional drawing of the terminal block which concerns on other embodiment of this invention.
　以下、本発明の一側面に係る実施形態（以下、「本実施形態」とも表記する）を、図面に基づいて説明する。ただし、以下で説明する本実施形態は、あらゆる点において本発明の例示に過ぎない。本発明の範囲を逸脱することなく種々の改良や変形を行うことができることは言うまでもない。つまり、本発明の実施にあたって、実施形態に応じた具体的構成が適宜採用されてもよい。 Hereinafter, an embodiment according to one aspect of the present invention (hereinafter, also referred to as “the present embodiment”) will be described with reference to the drawings. However, the embodiments described below are merely examples of the present invention in all respects. Needless to say, various improvements and modifications can be made without departing from the scope of the present invention. That is, in carrying out the present invention, a specific configuration according to the embodiment may be appropriately adopted.
　§１　適用例
　（端子台１の適用例）
　図１に基づいて、本発明が適用される場面の一例について説明する。図１は、本発明の一実施形態に係るＰＬＣシステム１０００の前面図である。図１に示すように、ＰＬＣシステム１０００は、ＣＰＵユニット１００１および複数の各種Ｉ／Ｏユニット１００２が接続された構成となっている。図１に示す一例においては、ＣＰＵユニット１００１は１台の端子台１を備え、各種Ｉ／Ｏユニット１００２はそれぞれ２台の端子台１を備える。なお、Ｉ／Ｏユニット１００２は１台の端子台１を備えていてもよい。各端子台１は、絶縁性の筐体２と、筐体２の内部に設けられた複数の端子接続部３とを備える。ＰＬＣシステム１０００は、端子台１に接続されるデバイスに対して所定の入出力制御を行う。 §1 Application example (Application example of terminal block 1)
An example of a situation in which the present invention is applied will be described with reference to FIG. FIG. 1 is a front view of the PLC system 1000 according to the embodiment of the present invention. As shown in FIG. 1, the PLC system 1000 has a configuration in which a CPU unit 1001 and a plurality of various I / O units 1002 are connected. In the example shown in FIG. 1, the CPU unit 1001 includes one terminal block 1, and each of the various I / O units 1002 includes two terminal blocks 1. The I / O unit 1002 may include one terminal block 1. Each terminal block 1 includes an insulating housing 2 and a plurality of terminal connection portions 3 provided inside the housing 2. The PLC system 1000 performs predetermined input / output control on the device connected to the terminal block 1.
　筐体２は、各々に端子接続部３を収容する複数の収容部２１と、デバイスの端子が接続される側の壁面である正面壁２ａとを有する。正面壁２ａには、各収容部２１の開口である複数の電線挿入口２２と複数の治具挿入口２３とが設けられている。図１に示す一例においては、端子台１が備える端子接続部３の個数は１６である。すなわち、ＣＰＵユニット１００１は端子台１を１台備えているため、該ＣＰＵユニット１００１が備える端子接続部３の個数は１６であり、各種Ｉ／Ｏユニット１００２は端子台１を２台備えているため、該各種Ｉ／Ｏユニット１００２が備える端子接続部３の個数は３２である。端子台１が備える端子接続部３の個数についてはこれに限定されるものではない。各ユニットにおける端子台１には、端子接続部３の個数に対応する個数の電線挿入口２２および治具挿入口２３が設けられている。 The housing 2 has a plurality of accommodating portions 21 each accommodating the terminal connecting portion 3, and a front wall 2a which is a wall surface on the side to which the terminal of the device is connected. The front wall 2a is provided with a plurality of electric wire insertion ports 22 and a plurality of jig insertion ports 23, which are openings of the respective accommodating portions 21. In the example shown in FIG. 1, the number of terminal connection portions 3 included in the terminal block 1 is 16. That is, since the CPU unit 1001 includes one terminal block 1, the number of terminal connection portions 3 included in the CPU unit 1001 is 16, and various I / O units 1002 include two terminal blocks 1. Therefore, the number of terminal connection portions 3 included in the various I / O units 1002 is 32. The number of terminal connection portions 3 included in the terminal block 1 is not limited to this. The terminal block 1 in each unit is provided with a number of electric wire insertion ports 22 and jig insertion ports 23 corresponding to the number of terminal connection portions 3.
　電線挿入口２２は、電線を挿入するための略円形の開口である。電線挿入口２２には、端子台１に接続されるデバイスに応じて様々な電線径の電線が結線される。複数の電線挿入口２２は、略同一の内径を有する。また、複数の電線挿入口２２は、様々な電線径の電線（細線、太線、極太線の一部）が結線可能であるような内径を有する。なお、複数の電線挿入口２２は、端子台１に接続されるデバイスに応じて異なる内径を有していてもよい。 The electric wire insertion port 22 is a substantially circular opening for inserting an electric wire. Wires having various wire diameters are connected to the wire insertion port 22 depending on the device connected to the terminal block 1. The plurality of electric wire insertion ports 22 have substantially the same inner diameter. Further, the plurality of electric wire insertion ports 22 have an inner diameter so that electric wires having various electric wire diameters (thin wire, thick wire, a part of extra-thick wire) can be connected. The plurality of electric wire insertion ports 22 may have different inner diameters depending on the device connected to the terminal block 1.
　治具挿入口２３は、電線を挿入するとき、あるいは抜くときに治具を挿入するための略方形の開口である。治具としては、例えば、マイナスドライバを用いることができる。 The jig insertion port 23 is a substantially square opening for inserting a jig when inserting or removing an electric wire. As the jig, for example, a flat-blade screwdriver can be used.
　なお、図１は、ＰＬＣシステム１０００に設けられている端子台１の形態を示しているが、本実施形態の端子台１は、この形態に限定されるものではない。 Note that FIG. 1 shows the form of the terminal block 1 provided in the PLC system 1000, but the terminal block 1 of the present embodiment is not limited to this form.
　（従来の端子台１０１の構成例）
　図２～図８に基づいて、従来の端子台１０１の一例について説明する。なお、図２～図８においては簡単のため、１つの収容部２１に対応する、端子台１０１の一部を示している。 (Configuration example of the conventional terminal block 101)
An example of the conventional terminal block 101 will be described with reference to FIGS. 2 to 8. Note that, for the sake of simplicity, FIGS. 2 to 8 show a part of the terminal block 101 corresponding to one accommodating portion 21.
　図２は、端子台１０１に電線５が挿入されていない状態における、端子台１０１の前面図（図２の符号２Ａ）および断面図（図２の符号２Ｂ）である。図３は、端子台１０１に電線５が適切に挿入されている状態における、端子台１０１の前面図（図３の符号３Ａ）および断面図（図３の符号３Ｂ）である。図２および図３に示すように、端子台１０１は、筐体２と、端子接続部３とを備える。 FIG. 2 is a front view (reference numeral 2A of FIG. 2) and a cross-sectional view (reference numeral 2B of FIG. 2) of the terminal block 101 in a state where the electric wire 5 is not inserted into the terminal block 101. FIG. 3 is a front view (reference numeral 3A of FIG. 3) and a cross-sectional view (reference numeral 3B of FIG. 3) of the terminal block 101 in a state where the electric wire 5 is appropriately inserted into the terminal block 101. As shown in FIGS. 2 and 3, the terminal block 101 includes a housing 2 and a terminal connection portion 3.
　筐体２は、正面壁２ａと側壁２ｂと後面壁２ｃとを備える。また、筐体２の内部には収容部２１が形成されている。正面壁２ａには、筐体２の開口部として、電線挿入口２２と、治具挿入口２３とが設けられている。 The housing 2 includes a front wall 2a, a side wall 2b, and a rear wall 2c. In addition, a housing portion 21 is formed inside the housing 2. The front wall 2a is provided with an electric wire insertion port 22 and a jig insertion port 23 as openings of the housing 2.
　以下、端子台１０１における、正面壁２ａが位置する側を前方、その反対側を後方、前方に向かって左側を左方、右側を右方として説明する。また、正面壁２ａにおける、治具挿入口２３が位置する側を上方、その反対側を下方として説明する。 Hereinafter, the side of the terminal block 101 where the front wall 2a is located will be described as the front, the opposite side as the rear, the left side facing the front as the left side, and the right side as the right side. Further, the side of the front wall 2a where the jig insertion port 23 is located will be described as an upper side, and the opposite side thereof will be described as a lower side.
　電線挿入口２２に挿入される電線５は、電線５の被覆を途中まで剥がして露出させた所定長の導線部５１（ストリップ部）と、被覆で覆われた被覆部５２（非ストリップ部）とを備える。 The electric wire 5 inserted into the electric wire insertion port 22 includes a conductor portion 51 (strip portion) having a predetermined length exposed by peeling off the coating of the electric wire 5 halfway, and a covering portion 52 (non-strip portion) covered with a coating. To be equipped.
　筐体２は、電線通路部（導入部）６１と、治具通路部６２とを有する。電線通路部６１は、電線挿入口２２から収容部２１まで延伸する通路である。電線通路部６１は、電線挿入口２２から挿入される電線５を後述する弾性体３２に導くための通路である。電線通路部６１と収容部２１とは連続的に同じ材質で構成されていてもよい。電線５を適切に弾性体３２に導くために、電線通路部６１の、前後方向に直交する断面における断面積は、後方に向かうほど減少することが好ましい。また、様々な電線径の電線（細線、太線、極太線の一部）を結線可能とするために、電線通路部６１の後方側の開口は、所定の電線径以上の内径を有することが好ましい。 The housing 2 has an electric wire passage portion (introduction portion) 61 and a jig passage portion 62. The electric wire passage portion 61 is a passage extending from the electric wire insertion port 22 to the accommodating portion 21. The electric wire passage portion 61 is a passage for guiding the electric wire 5 inserted from the electric wire insertion port 22 to the elastic body 32 described later. The electric wire passage portion 61 and the accommodating portion 21 may be continuously made of the same material. In order to properly guide the electric wire 5 to the elastic body 32, it is preferable that the cross-sectional area of the electric wire passage portion 61 in the cross section orthogonal to the front-rear direction decreases toward the rear. Further, in order to enable connection of electric wires having various electric wire diameters (thin wire, thick wire, a part of extra-thick wire), it is preferable that the opening on the rear side of the electric wire passage portion 61 has an inner diameter equal to or larger than a predetermined electric wire diameter. ..
　治具通路部６２は、治具挿入口２３から収容部２１まで延伸する通路である。治具通路部６２は、治具挿入口２３から挿入される治具を後述する弾性体３２に導くための通路である。治具通路部６２と収容部２１とは連続的に同じ材質で構成されていてもよい。 The jig passage portion 62 is a passage extending from the jig insertion port 23 to the accommodating portion 21. The jig passage portion 62 is a passage for guiding the jig inserted from the jig insertion port 23 to the elastic body 32 described later. The jig passage portion 62 and the accommodating portion 21 may be continuously made of the same material.
　端子接続部３は、端子電極部３１と弾性体３２とを備える。端子電極部３１は、上方横板部３１ａと縦板部３１ｂと下方横板部３１ｃとから構成される。上方横板部３１ａは、側壁２ｂの上部と当接し、前後方向に延伸する。縦板部３１ｂは、後面壁２ｃと当接し、上下方向に延伸する。下方横板部３１ｃは、側壁２ｂの下部と当接し、前後方向に延伸する。端子電極部３１は、導電体からなり、電線５の挿入時には、電線５と電気的に接続する。 The terminal connection portion 3 includes a terminal electrode portion 31 and an elastic body 32. The terminal electrode portion 31 is composed of an upper horizontal plate portion 31a, a vertical plate portion 31b, and a lower horizontal plate portion 31c. The upper horizontal plate portion 31a comes into contact with the upper portion of the side wall 2b and extends in the front-rear direction. The vertical plate portion 31b comes into contact with the rear wall 2c and extends in the vertical direction. The lower horizontal plate portion 31c comes into contact with the lower portion of the side wall 2b and extends in the front-rear direction. The terminal electrode portion 31 is made of a conductor and is electrically connected to the electric wire 5 when the electric wire 5 is inserted.
　弾性体３２は、金属板から構成されたＵ字形状の板バネである。弾性体３２は、例えば平板状の金属板における長さ方向中央部を屈曲させて形成される部材である。弾性体３２の一端は、上方横板部３１ａに当接している。電線５が挿入されていないとき、弾性体３２の他端は、下方横板部３１ｃに当接している（図２の符号２Ｂ参照）。電線５が挿入されているとき、弾性体３２の他端は、導線部５１に接触し、導線部５１に対して押圧する（図３の符号３Ｂ参照）。これにより、弾性体３２は、電線５と電気的に接続する。また、弾性体３２は、電線５を弾性体３２と下方横板部３１ｃとの間において保持する。なお、弾性体３２の形状は、図２～図８に示される形状に限定されるものではない。 The elastic body 32 is a U-shaped leaf spring composed of a metal plate. The elastic body 32 is, for example, a member formed by bending a central portion in the length direction of a flat metal plate. One end of the elastic body 32 is in contact with the upper horizontal plate portion 31a. When the electric wire 5 is not inserted, the other end of the elastic body 32 is in contact with the lower horizontal plate portion 31c (see reference numeral 2B in FIG. 2). When the electric wire 5 is inserted, the other end of the elastic body 32 comes into contact with the conducting wire portion 51 and presses against the conducting wire portion 51 (see reference numeral 3B in FIG. 3). As a result, the elastic body 32 is electrically connected to the electric wire 5. Further, the elastic body 32 holds the electric wire 5 between the elastic body 32 and the lower horizontal plate portion 31c. The shape of the elastic body 32 is not limited to the shapes shown in FIGS. 2 to 8.
　（電線５の挿入・抜き取り方法）
　以下、端子台１０１に電線５を挿入する方法の一例について説明する。まず、治具挿入口２３から治具を挿入する。治具は、治具通路部６２を介して収容部２１内に挿入される。治具は、弾性体３２の他端と接触する。治具の先端が後面壁２ｃに接触するまで治具を収容部２１内に挿入することで、弾性体３２の他端は上方に押し上げられる。これにより、収容部２１の下部に電線５を収容する空間が形成される。 (How to insert / remove the electric wire 5)
Hereinafter, an example of a method of inserting the electric wire 5 into the terminal block 101 will be described. First, the jig is inserted from the jig insertion port 23. The jig is inserted into the accommodating portion 21 via the jig passage portion 62. The jig comes into contact with the other end of the elastic body 32. By inserting the jig into the accommodating portion 21 until the tip of the jig comes into contact with the rear wall 2c, the other end of the elastic body 32 is pushed upward. As a result, a space for accommodating the electric wire 5 is formed in the lower part of the accommodating portion 21.
　次に、治具を治具挿入口２３に挿入した状態で、電線挿入口２２から電線５を挿入する。電線５は、電線通路部６１を介して収容部２１内に挿入される。電線５は、治具により収容部２１内の下部に形成された空間に収容される。 Next, with the jig inserted in the jig insertion port 23, the electric wire 5 is inserted from the electric wire insertion port 22. The electric wire 5 is inserted into the accommodating portion 21 via the electric wire passage portion 61. The electric wire 5 is accommodated in a space formed in the lower portion of the accommodating portion 21 by a jig.
　次に、治具を治具挿入口２３から抜く。これにより、弾性体３２の他端は電線５を押圧する。すなわち、弾性体３２は電線５を保持する。以上の操作により、電線５は端子台１０１に挿入される。 Next, remove the jig from the jig insertion slot 23. As a result, the other end of the elastic body 32 presses the electric wire 5. That is, the elastic body 32 holds the electric wire 5. By the above operation, the electric wire 5 is inserted into the terminal block 101.
　以下、端子台１０１から電線５を抜き取る方法の一例について説明する。まず、治具挿入口２３から治具を挿入する。治具は、治具通路部６２を介して収容部２１内に挿入される。治具は、弾性体３２の他端と接触する。治具の先端が後面壁２ｃに接触するまで治具を収容部２１内に挿入することで、弾性体３２の他端は上方に押し上げられる。これにより、電線５は弾性体３２の保持から解放される。 Hereinafter, an example of a method of pulling out the electric wire 5 from the terminal block 101 will be described. First, the jig is inserted from the jig insertion port 23. The jig is inserted into the accommodating portion 21 via the jig passage portion 62. The jig comes into contact with the other end of the elastic body 32. By inserting the jig into the accommodating portion 21 until the tip of the jig comes into contact with the rear wall 2c, the other end of the elastic body 32 is pushed upward. As a result, the electric wire 5 is released from the holding of the elastic body 32.
　次に、治具を治具挿入口２３に挿入した状態で、電線挿入口２２から電線５を抜き取る。次に、治具を治具挿入口２３から抜く。以上の操作により、電線５は端子台１０１から抜き取られる。 Next, with the jig inserted in the jig insertion port 23, the electric wire 5 is pulled out from the electric wire insertion port 22. Next, the jig is pulled out from the jig insertion port 23. By the above operation, the electric wire 5 is pulled out from the terminal block 101.
　なお、電線５がある程度の剛性を有している場合、治具を用いることなく電線５を電線挿入口２２から収容部２１に挿入してもよい。すなわち、電線５の剛性によって弾性体３２を押し上げて保持状態としてもよい。 If the electric wire 5 has a certain degree of rigidity, the electric wire 5 may be inserted into the accommodating portion 21 from the electric wire insertion port 22 without using a jig. That is, the elastic body 32 may be pushed up by the rigidity of the electric wire 5 to be in a holding state.
　（電線５の挿入状態）
　以下、図３を参照し、端子台１０１に電線５が適切に挿入されている状態を説明する。図３の符号３Ａに示すように、電線５は、電線挿入口２２における左右方向の中央近傍で挿入される。これにより、電線５は、弾性体３２の保持位置側先端における左右方向の中央近傍（所定の保持位置Ｐ）で保持される。また、図３の符号３Ｂに示すように、電線５は、収容部２１に所定の挿入距離だけ挿入される。これにより、電線５における導線部５１の部分が弾性体３２に保持され、導線部５１と弾性体３２および端子電極部３１とが導通する。 (Insert state of electric wire 5)
Hereinafter, a state in which the electric wire 5 is appropriately inserted into the terminal block 101 will be described with reference to FIG. As shown by reference numeral 3A in FIG. 3, the electric wire 5 is inserted near the center in the left-right direction at the electric wire insertion port 22. As a result, the electric wire 5 is held near the center in the left-right direction (predetermined holding position P) at the tip of the elastic body 32 on the holding position side. Further, as shown by reference numeral 3B in FIG. 3, the electric wire 5 is inserted into the accommodating portion 21 by a predetermined insertion distance. As a result, the portion of the conducting wire portion 51 of the electric wire 5 is held by the elastic body 32, and the conducting wire portion 51, the elastic body 32, and the terminal electrode portion 31 are electrically connected to each other.
　電線挿入口２２は、様々な電線径の電線が結線可能であるように設けられている。そのため、電線挿入口２２の内径は、細線の電線径に対しては大きめに設けられることとなる。したがって、従来の端子台１０１では、電線５が細線である場合、弾性体３２による電線５の接続位置が不安定となり、端子台１０１に電線５が不適切に挿入されている状態となる可能性がある。 The electric wire insertion port 22 is provided so that electric wires having various electric wire diameters can be connected. Therefore, the inner diameter of the electric wire insertion port 22 is provided to be larger than the electric wire diameter of the thin wire. Therefore, in the conventional terminal block 101, when the electric wire 5 is a thin wire, the connection position of the electric wire 5 by the elastic body 32 becomes unstable, and the electric wire 5 may be improperly inserted into the terminal block 101. There is.
　図４は、端子台１０１に電線５が不適切に挿入されている状態の一例における、端子台１０１の前面図（図４の符号４Ａ）および断面図（図４の符号４Ｂ）である。図５は、端子台１０１に電線５が不適切に挿入されている状態の他の例における、端子台１０１の前面図（図５の符号５Ａ）および断面図（図５の符号５Ｂ）である。図６は、端子台１０１に電線５が不適切に挿入されている状態のさらに他の例における、端子台１０１の前面図である。図７は、端子台１０１に電線５が不適切に挿入されている状態のさらに他の例における、弾性体３２と電線５との位置関係を示す模式断面図である。図８は、端子台１０１に電線５が不適切に挿入されている状態のさらに他の例における、弾性体３２の斜視図（図８の符号８Ａ）および前面図（図８の符号８Ｂ）である。以下、図４～図８を参照し、端子台１０１に電線５が不適切に挿入されている状態の具体例を説明する。 FIG. 4 is a front view (reference numeral 4A of FIG. 4) and a cross-sectional view (reference numeral 4B of FIG. 4) of the terminal block 101 in an example of a state in which the electric wire 5 is improperly inserted into the terminal block 101. FIG. 5 is a front view (reference numeral 5A of FIG. 5) and a cross-sectional view (reference numeral 5B of FIG. 5) of the terminal block 101 in another example in which the electric wire 5 is improperly inserted into the terminal block 101. .. FIG. 6 is a front view of the terminal block 101 in still another example in which the electric wire 5 is improperly inserted into the terminal block 101. FIG. 7 is a schematic cross-sectional view showing the positional relationship between the elastic body 32 and the electric wire 5 in still another example in which the electric wire 5 is improperly inserted into the terminal block 101. FIG. 8 is a perspective view (reference numeral 8A of FIG. 8) and a front view (reference numeral 8B of FIG. 8) of the elastic body 32 in still another example in which the electric wire 5 is improperly inserted into the terminal block 101. be. Hereinafter, a specific example of a state in which the electric wire 5 is improperly inserted into the terminal block 101 will be described with reference to FIGS. 4 to 8.
　図４は、電線５が端子台１０１に挿入される挿入距離が図３に示す状態より長く、被覆部５２が保持位置Ｐに位置している状態を示す。このような状態において、弾性体３２は、被覆部５２と接触し、導線部とは接触しない。そのため、電線５を端子台１０１に挿入する挿入距離が長すぎる場合、弾性体３２は電線５と電気的に接続しなくなる。 FIG. 4 shows a state in which the insertion distance of the electric wire 5 into the terminal block 101 is longer than that shown in FIG. 3, and the covering portion 52 is located at the holding position P. In such a state, the elastic body 32 comes into contact with the covering portion 52 and does not come into contact with the conducting wire portion. Therefore, if the insertion distance for inserting the electric wire 5 into the terminal block 101 is too long, the elastic body 32 will not be electrically connected to the electric wire 5.
　図５は、電線５が端子台１０１に挿入される挿入距離が図３に示す状態より短く、導線部５１の先端が保持位置Ｐに位置している状態を示す。このような状態において、弾性体３２は、導線部５１の先端を保持することになる。そのため、電線５を端子台１０１に挿入する挿入距離が短すぎる場合、導線部５１が弾性体３２による保持から外れるリスクが高くなる。 FIG. 5 shows a state in which the insertion distance of the electric wire 5 into the terminal block 101 is shorter than that shown in FIG. 3, and the tip of the conducting wire portion 51 is located at the holding position P. In such a state, the elastic body 32 holds the tip of the conducting wire portion 51. Therefore, if the insertion distance for inserting the electric wire 5 into the terminal block 101 is too short, there is a high risk that the conducting wire portion 51 will be disengaged from being held by the elastic body 32.
　図６は、電線５が電線挿入口２２における左端（図６の符号６Ａ）あるいは右端（図６の符号６Ｂ）で挿入される状態を示す。以下、電線５が電線挿入口２２における右端で挿入される場合について説明する。図７に示すように、このような状態において、電線５は、弾性体３２の右端と下方横板部３１ｃの右端との間において、弾性体３２に保持される。図８に示すように、このような弾性体３２による電線５の接続位置が右方向に偏ることにより、弾性体３２は、左方向に撓んでしまう。そのため、電線５が弾性体３２による保持から外れてしまう可能性がある。 FIG. 6 shows a state in which the electric wire 5 is inserted at the left end (reference numeral 6A in FIG. 6) or the right end (reference numeral 6B in FIG. 6) of the electric wire insertion port 22. Hereinafter, a case where the electric wire 5 is inserted at the right end of the electric wire insertion port 22 will be described. As shown in FIG. 7, in such a state, the electric wire 5 is held by the elastic body 32 between the right end of the elastic body 32 and the right end of the lower horizontal plate portion 31c. As shown in FIG. 8, the elastic body 32 bends to the left because the connection position of the electric wire 5 by the elastic body 32 is biased to the right. Therefore, the electric wire 5 may be disengaged from being held by the elastic body 32.
　以上のように、従来の端子台１０１では、電線５が細線である場合、端子台１０１に電線５が不適切に挿入され、電線５が断線しやすい状態となってしまう。一方、本実施形態に係る端子台１は、電線５を保持位置Ｐに案内する第１ガイド溝７（図９～図１２参照）あるいは第２ガイド溝２０７（図１３参照）を備える。これにより、電線５が細線である場合についても、電線５を適切に端子台１に挿入することができる。すなわち、端子台１の接点品質維持を実現することができる。 As described above, in the conventional terminal block 101, when the electric wire 5 is a thin wire, the electric wire 5 is improperly inserted into the terminal block 101, and the electric wire 5 is easily broken. On the other hand, the terminal block 1 according to the present embodiment includes a first guide groove 7 (see FIGS. 9 to 12) or a second guide groove 207 (see FIG. 13) that guides the electric wire 5 to the holding position P. As a result, even when the electric wire 5 is a thin wire, the electric wire 5 can be appropriately inserted into the terminal block 1. That is, it is possible to maintain the contact quality of the terminal block 1.
　§２　構成例
　〔実施形態１〕
　（端子台１の構成例）
　図９は、本発明の実施形態１に係る端子台１の断面図である。図１０は、電線５が端子台１に挿入されている状態（図１０の符号１０Ａ）および挿入されていない状態（図１０の符号１０Ｂ）における端子台１の前面図である。図１１は、電線５が端子台１に挿入されている状態（図１１の符号１１Ａ）および挿入されていない状態（図１１の符号１１Ｂ）における端子台１の斜視図である。図１２は、電線５が端子台１に挿入されている状態（図１２の符号１２Ａ）および挿入されていない状態（図１２の符号１２Ｂ）における端子台１の第１ガイド溝７を拡大した拡大断面図である。実施形態１に係る端子台１は、電線５を保持位置Ｐ（図３～図６参照）に案内する第１ガイド溝７を備える点で端子台１０１と相違する。 §2 Configuration example [Embodiment 1]
(Configuration example of terminal block 1)
FIG. 9 is a cross-sectional view of the terminal block 1 according to the first embodiment of the present invention. FIG. 10 is a front view of the terminal block 1 in a state where the electric wire 5 is inserted into the terminal block 1 (reference numeral 10A in FIG. 10) and in a state where the electric wire 5 is not inserted (reference numeral 10B in FIG. 10). FIG. 11 is a perspective view of the terminal block 1 in a state where the electric wire 5 is inserted into the terminal block 1 (reference numeral 11A in FIG. 11) and in a state where the electric wire 5 is not inserted (reference numeral 11B in FIG. 11). FIG. 12 is an enlarged enlargement of the first guide groove 7 of the terminal block 1 in the state where the electric wire 5 is inserted into the terminal block 1 (reference numeral 12A in FIG. 12) and in the state where the electric wire 5 is not inserted (reference numeral 12B in FIG. 12). It is a cross-sectional view. The terminal block 1 according to the first embodiment is different from the terminal block 101 in that it includes a first guide groove 7 that guides the electric wire 5 to the holding position P (see FIGS. 3 to 6).
　図９～図１２に示すように、第１ガイド溝７は、電線通路部６１に設けられる。具体的には、第１ガイド溝７は、電線通路部６１の内面において、電線挿入口２２における、保持位置Ｐに対応する対応位置Ｐ１に設けられる。また、第１ガイド溝７は、対応位置Ｐ１から保持位置Ｐに向かって前後方向に延伸する。図９～図１２に示す一例においては、第１ガイド溝７は、対応位置Ｐ１から電線通路部６１と収容部２１との境界の手前まで延伸している。なお、第１ガイド溝７の延伸の長さは特に限定されるものではなく、対応位置Ｐ１から保持位置Ｐまでのいずれの位置まで延伸していてもよい。 As shown in FIGS. 9 to 12, the first guide groove 7 is provided in the electric wire passage portion 61. Specifically, the first guide groove 7 is provided on the inner surface of the electric wire passage portion 61 at the corresponding position P1 corresponding to the holding position P in the electric wire insertion port 22. Further, the first guide groove 7 extends in the front-rear direction from the corresponding position P1 toward the holding position P. In the example shown in FIGS. 9 to 12, the first guide groove 7 extends from the corresponding position P1 to just before the boundary between the electric wire passage portion 61 and the accommodating portion 21. The length of extension of the first guide groove 7 is not particularly limited, and may be extended to any position from the corresponding position P1 to the holding position P.
　第１ガイド溝７は、底面７ａと側壁７ｂと段差部７１とを有する。段差部７１は、後方における（すなわち、電線５の挿入方向における）第１ガイド溝７の一端において、第１ガイド溝７の底面７ａと電線通路部６１の内面とを接続する段差である。 The first guide groove 7 has a bottom surface 7a, a side wall 7b, and a step portion 71. The step portion 71 is a step that connects the bottom surface 7a of the first guide groove 7 and the inner surface of the electric wire passage portion 61 at one end of the first guide groove 7 at the rear (that is, in the insertion direction of the electric wire 5).
　図９～図１２に示す一例においては、第１ガイド溝７の、電線５の挿入方向に直交する平面で切った断面は、略台形状である。なお、当該断面はこれに限定されず、電線５が挿入しやすい形状であればよい。好ましくは、第１ガイド溝７の深さは、当該断面において、中央に向かうほど深くなっていればよい。すなわち、当該断面は、例えば半円状、あるいは逆三角形状等であればよい。これにより、電線５がどのような太さであっても、電線５を保持位置Ｐの左右方向中央近傍にガイドしやすくすることができる。 In the example shown in FIGS. 9 to 12, the cross section of the first guide groove 7 cut by a plane orthogonal to the insertion direction of the electric wire 5 is substantially trapezoidal. The cross section is not limited to this, and any shape may be used as long as the electric wire 5 can be easily inserted. Preferably, the depth of the first guide groove 7 may be deeper toward the center in the cross section. That is, the cross section may be, for example, a semicircular shape, an inverted triangular shape, or the like. As a result, regardless of the thickness of the electric wire 5, the electric wire 5 can be easily guided to the vicinity of the center in the left-right direction of the holding position P.
　図１０の符号１０Ａ、図１１の符号１１Ａ、および図１２の符号１２Ａに示すように、電線５が細線である場合、電線５は第１ガイド溝７に沿って端子台１に挿入される。これにより、電線５は、保持位置Ｐに向かって挿入される。すなわち、電線５は、保持位置Ｐで確実に保持され得る。また、第１ガイド溝７は、電線挿入口２２に設けられるため、ユーザに電線５を挿入する位置（対応位置Ｐ１）を示すことができる。そのため、電線５を電線挿入口２２に挿入する結線作業を安定化させることができる。さらに、電線５を第１ガイド溝７に沿って端子台１に挿入する場合、被覆部５２が段差部７１に突き当たる。これにより、被覆部５２が段差部７１より収容部２１側に侵入することを抑制できるので、被覆部５２が弾性体３２により保持されて電線５と弾性体３２とが非導通になる状態を抑制することができる。また、導線部５１の長さを適切に設定すれば、導線部５１の先端が弾性体３２により保持されることもない。そのため、導線部５１の先端が弾性体３２に保持される場合と比較し、導線部５１が弾性体３２による保持から外れるリスクも低くなる。従って、第１ガイド溝７が段差部７１を有することにより、導線部５１における長さ方向の適切な位置で弾性体３２に保持されるように、電線５を挿入することができる。 As shown by reference numeral 10A in FIG. 10, reference numeral 11A in FIG. 11, and reference numeral 12A in FIG. 12, when the electric wire 5 is a thin wire, the electric wire 5 is inserted into the terminal block 1 along the first guide groove 7. As a result, the electric wire 5 is inserted toward the holding position P. That is, the electric wire 5 can be reliably held at the holding position P. Further, since the first guide groove 7 is provided in the electric wire insertion port 22, the user can be informed of the position where the electric wire 5 is inserted (corresponding position P1). Therefore, the connection work of inserting the electric wire 5 into the electric wire insertion port 22 can be stabilized. Further, when the electric wire 5 is inserted into the terminal block 1 along the first guide groove 7, the covering portion 52 abuts on the step portion 71. As a result, it is possible to prevent the covering portion 52 from invading the accommodating portion 21 side from the step portion 71, so that the state in which the covering portion 52 is held by the elastic body 32 and the electric wire 5 and the elastic body 32 become non-conducting is suppressed. can do. Further, if the length of the conducting wire portion 51 is appropriately set, the tip of the conducting wire portion 51 will not be held by the elastic body 32. Therefore, as compared with the case where the tip of the conducting wire portion 51 is held by the elastic body 32, the risk that the conducting wire portion 51 is disengaged from being held by the elastic body 32 is also reduced. Therefore, since the first guide groove 7 has the stepped portion 71, the electric wire 5 can be inserted so as to be held by the elastic body 32 at an appropriate position in the length direction in the conducting wire portion 51.
　（変形例）
　第１ガイド溝７の幅は、対応位置Ｐ１から保持位置Ｐに向かって漸次狭くなっていてもよい。これにより、電線挿入口２２では第１ガイド溝７の幅が広いので、電線５を容易に第１ガイド溝７に挿入することができる。 (Modification example)
The width of the first guide groove 7 may be gradually narrowed from the corresponding position P1 toward the holding position P. As a result, since the width of the first guide groove 7 is wide at the electric wire insertion port 22, the electric wire 5 can be easily inserted into the first guide groove 7.
　第１ガイド溝７の深さは、対応位置Ｐ１から保持位置Ｐに向かって漸次浅くなっていてもよい。これにより、電線挿入口２２では第１ガイド溝７は深く形成されているので、電線５を容易に第１ガイド溝７に挿入することができる。 The depth of the first guide groove 7 may gradually become shallower from the corresponding position P1 toward the holding position P. As a result, since the first guide groove 7 is deeply formed in the electric wire insertion port 22, the electric wire 5 can be easily inserted into the first guide groove 7.
　〔実施形態２〕
　本発明の他の実施形態について、以下に説明する。なお、説明の便宜上、上記実施形態にて説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を繰り返さない。 [Embodiment 2]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the above embodiment, and the description will not be repeated.
　（端子台２０１の構成例）
　図１３は、本発明の実施形態２に係る端子台２０１の断面図である。実施形態２に係る端子台２０１は、第１ガイド溝７の代わりに第２ガイド溝２０７を備える点で端子台１と相違する。 (Configuration example of terminal block 201)
FIG. 13 is a cross-sectional view of the terminal block 201 according to the second embodiment of the present invention. The terminal block 201 according to the second embodiment is different from the terminal block 1 in that the second guide groove 207 is provided instead of the first guide groove 7.
　第２ガイド溝２０７は、段差部７１を有さない点で第１ガイド溝７と相違する。すなわち、第２ガイド溝２０７は、電線５の挿入方向における第２ガイド溝２０７の一端において、第２ガイド溝２０７の底面２０７ａと電線通路部６１の内面との境界部分が滑らかに連続している。 The second guide groove 207 is different from the first guide groove 7 in that it does not have a stepped portion 71. That is, in the second guide groove 207, at one end of the second guide groove 207 in the insertion direction of the electric wire 5, the boundary portion between the bottom surface 207a of the second guide groove 207 and the inner surface of the electric wire passage portion 61 is smoothly continuous. ..
　第２ガイド溝２０７は、第１ガイド溝７と比較し、段差部７１を有さないので、電線５をスムーズに端子台２０１に挿入することができる。なお、実施形態１では、被覆部５２が保持位置Ｐまで侵入することを抑制するために段差部７１を設けていた。これに対して、例えば導線部５１の長さが、保持位置Ｐから、収容部２１の挿入方向における突き当りまでの距離よりも長いことが想定されている場合、被覆部５２が保持位置Ｐまで侵入することはない。よって、この場合には、段差部７１をなくすことによって、電線５の収容部２１への挿入をよりスムーズにすることを優先することができる。
　（まとめ） Since the second guide groove 207 does not have a step portion 71 as compared with the first guide groove 7, the electric wire 5 can be smoothly inserted into the terminal block 201. In the first embodiment, the step portion 71 is provided in order to prevent the covering portion 52 from invading to the holding position P. On the other hand, for example, when it is assumed that the length of the conducting wire portion 51 is longer than the distance from the holding position P to the end of the accommodating portion 21 in the insertion direction, the covering portion 52 penetrates to the holding position P. There is nothing to do. Therefore, in this case, it is possible to give priority to smoother insertion of the electric wire 5 into the accommodating portion 21 by eliminating the step portion 71.
(summary)
　上記の課題を解決するために、本発明の一態様に係る端子台は、挿入される電線を収容する収容部と、前記電線を前記収容部に導く導入部と、前記収容部に設けられ、挿入された前記電線に対して、所定の保持位置で前記収容部の一方の壁面に対して押圧することで前記電線を保持するとともに、前記電線と電気接続する弾性体と、を備える端子台であって、前記導入部の内面には、当該導入部の開口部における、前記保持位置に対応する対応位置にガイド溝が設けられている。 In order to solve the above problems, the terminal block according to one aspect of the present invention is provided in the accommodating portion for accommodating the electric wire to be inserted, the introduction portion for guiding the electric wire to the accommodating portion, and the accommodating portion. A terminal block provided with an elastic body that holds the inserted electric wire by pressing it against one wall surface of the accommodating portion at a predetermined holding position and electrically connects to the electric wire. Therefore, a guide groove is provided on the inner surface of the introduction portion at a corresponding position corresponding to the holding position in the opening of the introduction portion.
　上記構成によれば、端子台は、電線を保持位置に案内するガイド溝を備える。これにより、電線が細線である場合についても、電線を適切に端子台に挿入することができる。すなわち、端子台の接点品質維持を実現することができる。また、ガイド溝は、導入部の開口部に設けられるため、ユーザに電線を挿入する位置（対応位置）を示すことができる。そのため、電線を電線挿入口に挿入する結線作業を安定化させることができる。 According to the above configuration, the terminal block is provided with a guide groove for guiding the electric wire to the holding position. As a result, even when the electric wire is a thin wire, the electric wire can be appropriately inserted into the terminal block. That is, it is possible to maintain the contact quality of the terminal block. Further, since the guide groove is provided in the opening of the introduction portion, it is possible to indicate to the user the position (corresponding position) for inserting the electric wire. Therefore, it is possible to stabilize the connection work of inserting the electric wire into the electric wire insertion port.
　また、前記ガイド溝は、前記対応位置から前記保持位置に向かって延伸してもよい。上記構成によれば、電線をガイド溝に沿って端子台に挿入することにより、電線を保持位置に向かって挿入することができる。すなわち、電線は、保持位置で確実に保持され得る。 Further, the guide groove may be extended from the corresponding position toward the holding position. According to the above configuration, the electric wire can be inserted toward the holding position by inserting the electric wire into the terminal block along the guide groove. That is, the electric wire can be reliably held at the holding position.
　また、前記ガイド溝の幅は、前記対応位置から前記保持位置に向かって漸次狭くなっていてもよい。上記構成によれば、開口部ではガイド溝の幅が広いので、電線を容易にガイド溝に挿入することができる。 Further, the width of the guide groove may be gradually narrowed from the corresponding position toward the holding position. According to the above configuration, since the width of the guide groove is wide at the opening, the electric wire can be easily inserted into the guide groove.
　また、前記ガイド溝の深さは、前記対応位置から前記保持位置に向かって漸次浅くなっていてもよい。上記構成によれば、開口部ではガイド溝は深く形成されているので、電線を容易にガイド溝に挿入することができる。 Further, the depth of the guide groove may gradually become shallower from the corresponding position toward the holding position. According to the above configuration, since the guide groove is deeply formed in the opening, the electric wire can be easily inserted into the guide groove.
　また、前記電線の挿入方向における前記ガイド溝の一端において、前記ガイド溝は、当該ガイド溝の底面と前記導入部の内面とを接続する段差である段差部を有していてもよい。 Further, at one end of the guide groove in the insertion direction of the electric wire, the guide groove may have a step portion which is a step connecting the bottom surface of the guide groove and the inner surface of the introduction portion.
　上記構成によれば、電線をガイド溝に沿って端子台に挿入する場合、電線の被覆部が段差部に突き当たる。これにより、被覆部が段差部より収容部側に侵入することを抑制できるので、被覆部が弾性体により保持されて電線と弾性体とが非導通になる状態を抑制することができる。また、電線の導線部の長さを適切に設定すれば、導線部の先端が弾性体により保持されることもない。そのため、導線部の先端が弾性体に保持される場合と比較し、導線部が弾性体による保持から外れるリスクも低くなる。従って、ガイド溝が段差部を有することにより、導線部における長さ方向の適切な位置で弾性体に保持されるように、電線を挿入することができる。 According to the above configuration, when the electric wire is inserted into the terminal block along the guide groove, the covering portion of the electric wire abuts on the step portion. As a result, it is possible to prevent the covering portion from invading the accommodating portion side from the stepped portion, so that it is possible to suppress a state in which the covering portion is held by the elastic body and the electric wire and the elastic body become non-conducting. Further, if the length of the conductor portion of the electric wire is appropriately set, the tip of the conductor portion will not be held by the elastic body. Therefore, the risk that the conducting wire portion is not held by the elastic body is lower than that in the case where the tip of the conducting wire portion is held by the elastic body. Therefore, since the guide groove has the stepped portion, the electric wire can be inserted so as to be held by the elastic body at an appropriate position in the length direction in the conducting wire portion.
　また、前記電線の挿入方向における前記ガイド溝の一端において、前記ガイド溝の底面と前記導入部の内面との境界部分が滑らかに連続していてもよい。上記構成によれば、ガイド溝が段差部を有する場合と比較し、電線をスムーズに端子台に挿入することができる。 Further, at one end of the guide groove in the insertion direction of the electric wire, the boundary portion between the bottom surface of the guide groove and the inner surface of the introduction portion may be smoothly continuous. According to the above configuration, the electric wire can be smoothly inserted into the terminal block as compared with the case where the guide groove has a stepped portion.
　また、前記ガイド溝の深さは、前記電線の挿入方向に直交する平面で切った断面において中央に向かうほど深くなっていてもよい。上記構成によれば、電線を保持位置の中央近傍にガイドしやすくすることができる。 Further, the depth of the guide groove may be deeper toward the center in a cross section cut by a plane orthogonal to the insertion direction of the electric wire. According to the above configuration, it is possible to easily guide the electric wire to the vicinity of the center of the holding position.
　本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。 The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.
　１、１０１、２０１　端子台
　２　筐体
　５　電線
　７　第１ガイド溝（ガイド溝）
　２１　収容部
　２２　電線挿入口（開口部）
　３２　弾性体
　６１　電線通路部（導入部）
　７１　段差部
　２０７　第２ガイド溝（ガイド溝）
　Ｐ　保持位置
　Ｐ１　対応位置 1, 101, 201 Terminal block 2 Housing 5 Electric wire 7 1st guide groove (guide groove)
21 Accommodating part 22 Electric wire insertion port (opening)
32 Elastic body 61 Electric wire passage (introduction)
71 Stepped part 207 Second guide groove (guide groove)
P holding position P1 compatible position

Claims (7)

  1. 　挿入される電線を収容する収容部と、
    　前記電線を前記収容部に導く導入部と、
    　前記収容部に設けられ、挿入された前記電線に対して、所定の保持位置で前記収容部の一方の壁面に対して押圧することで前記電線を保持するとともに、前記電線と電気接続する弾性体と、を備える端子台であって、
    　前記導入部の内面には、当該導入部の開口部における、前記保持位置に対応する対応位置にガイド溝が設けられている端子台。     An accommodating part for accommodating the inserted electric wire and
    An introduction part that guides the electric wire to the accommodation part,
    An elastic body provided in the accommodating portion and pressed against one wall surface of the accommodating portion at a predetermined holding position against the inserted electric wire to hold the electric wire and electrically connect to the electric wire. It is a terminal block equipped with
    A terminal block having a guide groove on the inner surface of the introduction portion at a corresponding position corresponding to the holding position in the opening of the introduction portion.
  2. 　前記ガイド溝は、前記対応位置から前記保持位置に向かって延伸している請求項１に記載の端子台。 The terminal block according to claim 1, wherein the guide groove extends from the corresponding position toward the holding position.
  3. 　前記ガイド溝の幅は、前記対応位置から前記保持位置に向かって漸次狭くなっている請求項２に記載の端子台。 The terminal block according to claim 2, wherein the width of the guide groove is gradually narrowed from the corresponding position toward the holding position.
  4. 　前記ガイド溝の深さは、前記対応位置から前記保持位置に向かって漸次浅くなっている請求項２または３に記載の端子台。 The terminal block according to claim 2 or 3, wherein the depth of the guide groove gradually becomes shallower from the corresponding position toward the holding position.
  5. 　前記電線の挿入方向における前記ガイド溝の一端において、前記ガイド溝は、当該ガイド溝の底面と前記導入部の内面とを接続する段差である段差部を有している請求項１から４のいずれか１項に記載の端子台。 Any of claims 1 to 4, wherein at one end of the guide groove in the insertion direction of the electric wire, the guide groove has a stepped portion which is a step portion connecting the bottom surface of the guide groove and the inner surface of the introduction portion. The terminal block described in item 1.
  6. 　前記電線の挿入方向における前記ガイド溝の一端において、前記ガイド溝の底面と前記導入部の内面との境界部分が滑らかに連続している請求項１から４のいずれか１項に記載の端子台。 The terminal block according to any one of claims 1 to 4, wherein the boundary portion between the bottom surface of the guide groove and the inner surface of the introduction portion is smoothly continuous at one end of the guide groove in the insertion direction of the electric wire. ..
  7. 　前記ガイド溝の深さは、前記電線の挿入方向に直交する平面で切った断面において中央に向かうほど深くなっている請求項１から６のいずれか１項に記載の端子台。 The terminal block according to any one of claims 1 to 6, wherein the depth of the guide groove becomes deeper toward the center in a cross section cut by a plane orthogonal to the insertion direction of the electric wire.
PCT/JP2021/008145 2021-01-18 2021-03-03 Terminal block WO2022153556A1 (en)

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JP2021-005956 2021-01-18

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017183022A (en) * 2016-03-29 2017-10-05 パナソニックＩｐマネジメント株式会社 Terminal arrangement and wiring accessory equipped with the same
JP2018046124A (en) * 2016-09-14 2018-03-22 日産自動車株式会社 Harness insertion part structure of enclosure
WO2019239506A1 (en) * 2018-06-13 2019-12-19 三菱電機株式会社 Terminal block device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017183022A (en) * 2016-03-29 2017-10-05 パナソニックＩｐマネジメント株式会社 Terminal arrangement and wiring accessory equipped with the same
JP2018046124A (en) * 2016-09-14 2018-03-22 日産自動車株式会社 Harness insertion part structure of enclosure
WO2019239506A1 (en) * 2018-06-13 2019-12-19 三菱電機株式会社 Terminal block device

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