WO2018074537A1 - Dispositif de borne et appareil de câblage équipé de ce dernier - Google Patents

Dispositif de borne et appareil de câblage équipé de ce dernier Download PDF

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Publication number
WO2018074537A1
WO2018074537A1 PCT/JP2017/037774 JP2017037774W WO2018074537A1 WO 2018074537 A1 WO2018074537 A1 WO 2018074537A1 JP 2017037774 W JP2017037774 W JP 2017037774W WO 2018074537 A1 WO2018074537 A1 WO 2018074537A1
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WO
WIPO (PCT)
Prior art keywords
terminal
pressing
electric wire
axis direction
terminal device
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Application number
PCT/JP2017/037774
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English (en)
Japanese (ja)
Inventor
将一 新谷
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2018074537A1 publication Critical patent/WO2018074537A1/fr

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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

Definitions

  • the present invention generally relates to a terminal device and a wiring device including the same, and more particularly to a terminal device that is connected to an electric wire by inserting the electric wire and a wiring device including the terminal device.
  • Patent Document 1 describes a terminal device having a so-called quick connection structure that can be connected without using screws for the purpose of facilitating the connection of electric wires to a wiring device such as a switch.
  • the terminal device described in Patent Document 1 includes a terminal portion (terminal plate) made of a conductive material and a lock spring.
  • the terminal portion is formed in a C shape, and the lock spring is housed in a space surrounded by the terminal portion.
  • the lock spring is formed of a central piece, a lock piece and a pressing piece by bending an elastic plate.
  • the locking piece and the pressing piece are formed at both ends of the central piece.
  • the pressing piece is plastically deformed in a direction away from the contact piece of the terminal portion due to metal fatigue or the like, and the force that pushes the electric wire toward the contact piece side May become weaker.
  • the contact state of the electric wire with respect to the terminal portion may become unstable, that is, the connection reliability of the terminal device may be reduced.
  • the present invention has been made in view of the above reasons, and an object of the present invention is to provide a terminal device capable of suppressing a decrease in connection reliability and a wiring device provided with the terminal device.
  • the terminal device includes a terminal portion, a pressing portion, a locking portion, and a support portion.
  • the pressing portion is arranged so as to face one surface of the terminal portion, and sandwiches an electric wire inserted along an insertion direction from an insertion port between the terminal portion.
  • the locking part is disposed so as to face the one surface of the terminal part, and contacts the electric wire to restrict the movement of the electric wire toward the insertion port.
  • the support portion supports the pressing portion.
  • the terminal portion and the pressing portion are integrally formed. The support portion supports the pressing portion by pressing the pressing portion toward the terminal portion.
  • a wiring device includes the terminal device and a device body that houses the terminal device.
  • FIG. 1A is a plan view showing a basic configuration of a terminal device according to an embodiment of the present invention.
  • FIG. 1B is a perspective sectional view taken along the line Z1-Z1 of FIG. 1A showing the basic configuration of the above terminal device and viewed from the positive direction of the Y axis.
  • FIG. 2 is a perspective view showing the spring block of the terminal device of the above, viewed from the positive direction of the Y axis.
  • FIG. 3 is an exploded perspective view showing the entire configuration of the terminal device according to the first embodiment and viewed from the positive direction of the Y axis.
  • 4A is a cross-sectional view taken along the line Z1-Z1 of FIG. 1A, showing a state where no electric wire is connected to the terminal device of the above.
  • FIG. 4B is a cross-sectional view taken along the line Z1-Z1 of FIG. 1A, showing a state where the electric wires are connected to the terminal device of the above.
  • FIG. 5A is a perspective sectional view taken along the line Z2-Z2 of FIG. 6A, showing the overall configuration of the above terminal device, as viewed from the positive direction of the Y axis.
  • 5B is a perspective cross-sectional view taken along the line Z2-Z2 of FIG. 6A, showing the overall configuration of the above terminal device, as viewed from the negative direction of the Y axis.
  • FIG. 6A is a plan view showing the overall configuration of the above terminal device. 6B is a cross-sectional view taken along the line Z1-Z1 of FIG.
  • FIG. 6A showing the overall configuration of the above terminal device.
  • FIG. 7 is a perspective view showing a wiring device according to an embodiment of the present invention.
  • FIG. 8A shows a first modification of the terminal device according to one embodiment of the present invention, and is a main part perspective sectional view as seen from the positive direction of the Y axis.
  • FIG. 8B is a perspective cross-sectional view of the main part of the terminal device according to the second modification as viewed from the positive direction of the Y axis.
  • the terminal device 1 is a so-called quick connection terminal that is connected to the electric wire 100 by inserting the electric wire 100 (see FIGS. 4A and 4B).
  • the terminal device 1 includes a terminal portion 2 having conductivity. In the terminal device 1, when the electric wire 100 comes into contact with the terminal portion 2, electrical connection between the terminal portion 2 and the electric wire 100 is performed. In FIG. 4A and 4B, the electric wire 100 is shown by the imaginary line (two-dot chain line).
  • the terminal device 1 is used for wiring apparatuses, such as a switch or an outlet (outlet), for example.
  • the wiring device 10 (see FIG. 7) provided with the terminal device 1 will be described in the section “(2.8) Wiring device”.
  • the terminal device 1 further includes a pressing portion 3, a locking portion 4, and a support portion 7 in addition to the terminal portion 2, for example, as shown in FIG. 1B.
  • the pressing portion 3 is disposed so as to face the one surface 20 of the terminal portion 2, and sandwiches the electric wire 100 inserted along the insertion direction from the insertion port 11 between the terminal portion 2.
  • the locking part 4 is disposed so as to face the one surface 20 of the terminal part 2 and contacts the electric wire 100 to move toward the insertion port 11 of the electric wire 100 (in a direction in which the tip of the electric wire 100 approaches the insertion port 11). Movement).
  • the electric wire 100 is electrically connected to the terminal portion 2 by being inserted between the terminal portion 2 and the pressing portion 3.
  • the electric wire 100 is inserted between the terminal portion 2 and the lock portion 4, so that the movement toward the insertion port 11 is restricted by the lock portion 4, and the electric wire 100 is prevented from coming off.
  • the terminal part 2 and the pressing part 3 are integrally formed.
  • the insertion port 11 only needs to be a space through which the electric wire 100 introduced between the terminal portion 2 and the locking portion 4 passes, and the terminal device 1 does not need to have the insertion port 11 with the substance, The function as the mouth 11 should just be provided.
  • the insertion port 11 without an entity is illustrated.
  • the insertion port 11 may be an insertion hole 81 (see FIGS. 5A and 5B) with a substance formed in a case 8 (see FIG. 3) described later.
  • the electric wire 100 is an insulated electric wire in which a core wire made of a conductor is covered with an insulating coating, only the distal end portion of the electric wire 100 from which the insulating coating is peeled, that is, the core wire is inserted from the insertion port 11.
  • the electric wire 100 may be either a single wire whose core wire is a single conductor or a stranded wire whose core wire is a plurality of conducting wires.
  • the support part 7 which concerns on this embodiment presses the pressing part 3 toward the terminal part 2 side, ie, toward the terminal part 2 side.
  • the pressing portion 3 is configured to generate an elastic force.
  • the terminal device 1 is not limited to the structure in which the support part 7 and the lock part 4 are integrally formed.
  • the terminal device 1 may include a support portion 200 that is a separate body from the lock portion 4 instead of including the support portion 7.
  • the “insertion direction” that is orthogonal to the X-axis direction and the direction in which the electric wire 100 is inserted is defined as the Y-axis direction, and the direction in which the electric wire 100 is inserted is described as the positive direction of the Y-axis.
  • the “width direction” (for example, the direction orthogonal to the paper surface of FIG.
  • the terminal device 1 is a two-pole type terminal device that can connect up to two electric wires 100. That is, the terminal device 1 has two insertion ports 11, and two electric wires 100 can be simultaneously connected through the two insertion ports 11.
  • the terminal device 1 includes two members, that is, a terminal block 12 and a spring block 13 as a basic configuration.
  • the terminal block 12 and the spring block 13 are composed of different members. That is, the terminal block 12 and the spring block 13 are members separated from each other and independent.
  • the terminal block 12 is made of a conductive metal plate.
  • the spring block 13 is made of an elastic metal plate. The spring block 13 is combined with the terminal block 12 so as to be accommodated in a space surrounded by the terminal block 12.
  • the terminal block 12 includes a terminal portion 2, a pressing portion 3, a facing portion 5, a side wall portion 6, and a connecting portion 30, as shown in FIGS.
  • the terminal part 2, the pressing part 3, the opposing part 5, the side wall part 6, and the connection part 30 are integrally formed.
  • 1B is a perspective sectional view taken along line Z1-Z1 of FIG. 1A.
  • the facing portion 5 is disposed so as to face the one surface 20 of the terminal portion 2.
  • the facing portion 5 forms an accommodating space 50 in which the pressing portion 3 and the locking portion 4 are accommodated between the facing portion 5 and the terminal portion 2.
  • the side wall portion 6 connects the terminal portion 2 and the facing portion 5.
  • the connecting part 30 connects the terminal part 2 and the pressing part 3.
  • the pressing portion 3 is formed integrally with the terminal portion 2 with the connecting portion 30 interposed therebetween.
  • the connecting portion 30 connects the end portion of the terminal portion 2 opposite to the insertion port 11 in the Y-axis direction and the pressing portion 3. That is, the terminal portion 2 and the pressing portion 3 are connected to each other at the end portion (upper end portion in FIG. 1B) opposite to the insertion port 11 in the Y-axis direction by the connecting portion 30.
  • the terminal block 12 is made of, for example, copper (Cu).
  • the terminal block 12 consists of one copper plate as one metal plate, for example.
  • the terminal device 1 is, for example, a bipolar terminal device as described above, and a plurality of (here, two) terminal portions 2, pressing portions 3, side wall portions 6 and connecting portions 30 are provided. Yes. That is, the terminal block 12 includes the facing portion 5, the first terminal portion 2A and the second terminal portion 2B, the first pressing portion 3A and the second pressing portion 3B, the first side wall portion 6A, and the first side portion 6B. 2 side wall part 6B, 30 A of 1st connection parts, and 30B of 2nd connection parts.
  • the terminal block 12 is integrally formed by punching and bending a single metal plate.
  • the two electric wires 100 are electrically connected to the first terminal portion 2A and the second terminal portion 2B, respectively.
  • the first terminal portion 2A and the second terminal portion 2B are electrically connected to each other via the facing portion 5, the first side wall portion 6A, and the second side wall portion 6B. Therefore, the two electric wires 100 connected to the terminal device 1 are electrically connected to each other via the first terminal portion 2A and the second terminal portion 2B. Therefore, the terminal device 1 is used as a feed terminal, for example.
  • FIG. 1B shows only the first terminal portion 2A out of the first terminal portion 2A and the second terminal portion 2B.
  • the first terminal portion 2 ⁇ / b> A and the second terminal portion 2 ⁇ / b> B adopt a configuration that is plane-symmetric in the Z-axis direction in which they are arranged. Therefore, in the following description, unless otherwise specified, only the first terminal portion 2A illustrated in FIG. 1B will be described, and description of the second terminal portion 2B will be omitted as appropriate. Further, when the first terminal portion 2A and the second terminal portion 2B are not distinguished from each other, they may be simply referred to as “terminal portion 2”.
  • the first pressing portion 3A and the second pressing portion 3B, and the first connecting portion 30A and the second connecting portion 30B the first pressing portion 3A and the first connecting portion 30A. Only is shown.
  • the first pressing portion 3 ⁇ / b> A and the second pressing portion 3 ⁇ / b> B employ a configuration that is plane-symmetric in the Z-axis direction in which they are arranged.
  • the first connecting portion 30 ⁇ / b> A and the second connecting portion 30 ⁇ / b> B employ a configuration that is plane-symmetric in the Z-axis direction in which they are arranged.
  • first pressing portion 3A and the first connecting portion 30A illustrated in FIG. 1B will be described, and the second pressing portion 3B and the second connecting portion will be described. Description of 30B will be omitted as appropriate. Further, when the first pressing portion 3A and the second pressing portion 3B are not distinguished from each other, they may be simply referred to as “the pressing portion 3”. Similarly, when the first connecting portion 30A and the second connecting portion 30B are not distinguished from each other, they may be simply referred to as “connecting portions 30”.
  • FIG. 1B only the first side wall portion 6A is shown in the first side wall portion 6A and the second side wall portion 6B.
  • the first side wall 6 ⁇ / b> A and the second side wall 6 ⁇ / b> B adopt a configuration that is plane-symmetric in the Z-axis direction in which they are arranged. Therefore, in the following description, unless otherwise specified, only the first side wall portion 6A illustrated in FIG. 1B will be described, and description of the second side wall portion 6B will be omitted as appropriate. Further, when the first side wall 6A and the second side wall 6B are not distinguished from each other, they may be simply referred to as “side wall 6”.
  • Each terminal portion 2 has a rectangular plate shape.
  • the first terminal portion 2A is configured so that one surface 20 in the thickness direction (X-axis direction) faces the first pressing portion 3A. That is, the electric wire 100 (see FIG. 4B) inserted from the insertion port 11 is introduced between the one surface 20 of the first terminal portion 2A and the first pressing portion 3A, and the one of the first terminal portions 2A.
  • the first terminal portion 2 ⁇ / b> A is electrically connected so as to be in contact with the surface 20.
  • a gap 23 is formed between the first terminal portion 2A and the second terminal portion 2B arranged in the Z-axis direction so as to extend along the Y-axis direction.
  • the gap 23 is formed across both ends of each terminal portion 2 in the Y-axis direction.
  • the first terminal portion 2A is separated from the second terminal portion 2B by the gap 23 in the Z-axis direction.
  • a part of the release member 9 described later is inserted into the accommodation space 50 between the first terminal portion 2 ⁇ / b> A and the second terminal portion 2 ⁇ / b> B and the facing portion 5.
  • the facing portion 5 is disposed at a position facing the one surface 20 of the first terminal portion 2A and the second terminal portion 2B.
  • the facing portion 5 has a rectangular plate shape, and an inner side surface 51 formed of one surface in the thickness direction (X-axis direction) is opposed to the one surface 20 of the first terminal portion 2A and the second terminal portion 2B. It is configured as follows.
  • the inner surface 51 of the facing portion 5 and the one surface 20 of the first terminal portion 2A and the second terminal portion 2B are parallel to each other.
  • the accommodation space 50 for accommodating the locking part 4 and the pressing part 3 between the inner surface 51 of the facing part 5 and the one surface 20 of the first terminal part 2A and the second terminal part 2B. Is formed. The details will be described in the column “(2.3) Spring block”, but the facing portion 5 positions the spring block 13 on the inner surface 51.
  • Each side wall portion 6 has a rectangular plate shape. As shown in FIG. 3, the first side wall 6A and the second side wall 6B protrude in the positive direction of the X axis from both ends of the facing portion 5 in the Z-axis direction, and the tip of the first side wall 6A The portion is connected to the first terminal portion 2A, and the tip of the second side wall portion 6B is connected to the second terminal portion 2B. That is, the first side wall portion 6A connects the first terminal portion 2A and the facing portion 5, and the second side wall portion 6B connects the second terminal portion 2B and the facing portion 5.
  • 6 A of 1st side wall parts and 6 A of 2nd side wall parts are comprised so that inner side surfaces 60 which consist of one surface in those thickness directions (Z-axis direction) may mutually oppose.
  • the inner side surface 60 of the first side wall portion 6A and the inner side surface 60 of the second side wall portion 6B are parallel to each other. Thereby, an accommodation space 50 is formed between the pair of inner side surfaces 60 of the two side wall portions 6.
  • each recess 63 is provided as a through hole that penetrates the side wall portion 6 in the thickness direction, but even if it is provided with a bottom surface without penetrating. Good.
  • Each concave portion 63 is provided in the vicinity of the facing portion 5 in the X-axis direction.
  • Each recessed part 63 is provided in the one end part side (lower end part side of FIG. 3) of the side wall part 6 in a Y-axis direction.
  • the two recesses 63 are arranged so as to face each other.
  • each recess 63 may be formed not only through the side wall portion 6 but also partially reaching the opposing portion 5.
  • the protrusion 44 of the locking part 4 will be described in detail in the section “(2.3.1) Locking part of spring block”.
  • tubular body 120 a portion of the terminal block 12 excluding the two pressing portions 3 and the two connecting portions 30 is referred to as a “tubular body 120”. That is, as shown in FIG. 3, the cylindrical body 120 includes two terminal portions 2, a facing portion 5, and two side wall portions 6.
  • the cylindrical body 120 is formed into a rectangular cylinder extending in the Y-axis direction from one metal plate by bending.
  • a connection portion (first corner portion 61) between each side wall portion 6 and the corresponding terminal portion 2, and a connection between each side wall portion 6 and the facing portion 5. All of the portions (second corner portions 62) are curved with a predetermined radius of curvature.
  • the first terminal portion 2A and the second terminal portion 2B, the opposing portion 5, and the first side wall are obtained by processing the strip-shaped metal plate into a cylindrical shape with both sides in the Y-axis direction being opened.
  • a portion 6A and a second side wall portion 6B are formed.
  • the space inside the cylindrical body 120 constitutes the accommodation space 50.
  • a gap 23 is formed in a part of the cylindrical body 120 in the circumferential direction over the entire length of the cylindrical body 120 in the Y-axis direction. That is, the cylindrical body 120 is not a complete square tube but is divided in the circumferential direction by a gap 23 formed in a part of the circumferential direction.
  • the opening 121 (see FIGS. 1B and 3) formed on the end surface on the insertion port 11 side in the Y-axis direction has a rectangular shape.
  • the opening 121 is a hole for passing the electric wire 100 inserted from the insertion port 11 to a space (accommodating space 50) surrounded by the cylindrical body 120. Further, as will be described in detail in the section of “(2.6) Overall configuration”, the opening 121 is used for introducing the spring block 13 into the accommodation space 50 when the terminal block 12 and the spring block 13 are combined. It becomes a hole.
  • the dimensional relationship is defined so that the dimensions to one end are substantially the same. Moreover, the dimension of each side wall part 6 in the X-axis direction is slightly shorter than the dimension of the opposing part 5 in the Z-axis direction. Furthermore, the dimensional relationship is defined between the facing portion 5 and each terminal portion 2 so that each terminal portion 2 is shorter in the Y-axis direction.
  • the opposing portion 5 and each side wall portion 6 have a dimensional relationship defined so as to have substantially the same length in the Y-axis direction.
  • the end edge (the lower end edge in FIG. 1B) on the insertion port 11 side in the Y-axis direction of the cylindrical body 120 is in the Y-axis direction by the two terminal portions 2, the facing portion 5, and the two side wall portions 6. The position is aligned. Therefore, an end edge (upper end edge in FIG. 1B) on the opposite side to the insertion port 11 in the Y-axis direction of the cylindrical body 120 is opposed to the first terminal portion 2A and the second terminal portion 2B. 5 and the first side wall 6A and the second side wall 6B protrude in the positive direction of the Y axis.
  • the two pressing portions 3, that is, the first pressing portion 3 ⁇ / b> A and the second pressing portion 3 ⁇ / b> B are accommodated in an accommodation space 50 formed inside the cylindrical body 120. Is arranged.
  • Each pressing portion 3 is disposed at a position facing the first portion 21 on the one surface 20 of the corresponding terminal portion 2 in the X-axis direction (opposing direction).
  • part 21 here is a site
  • Each pressing portion 3 is configured to sandwich the electric wire 100 inserted along the Y-axis direction from the insertion port 11 with the first portion 21 of the corresponding terminal portion 2.
  • the electric wire 100 is introduced between the one surface 20 of the first terminal portion 2A and the first pressing portion 3A.
  • the first pressing portion 3 ⁇ / b> A applies a force in a direction to press the electric wire 100 against the one surface 20. That is, the electric wire 100 is pressed against the first portion 21 of the one surface 20 of the first terminal portion 2A by the first pressing portion 3A, and an appropriate amount is provided between the first terminal portion 2A and the electric wire 100. Contact pressure is generated.
  • Each pressing part 3 has the 1st pressing piece 31, the 2nd pressing piece 32, and the 3rd pressing piece 33, as shown to FIG. 1B, FIG. 4A and 4B.
  • the first pressing piece 31, the second pressing piece 32, and the third pressing piece 33 are connected to the first pressing piece 31, the second pressing piece 32, the second pressing piece 33 from the corresponding connecting part 30 side (that is, the side opposite to the insertion port 11).
  • the three pressing pieces 33 are arranged in the Y-axis direction in this order.
  • the first pressing piece 31 has a rectangular plate shape and is substantially parallel to the one surface 20 of the corresponding terminal portion 2.
  • the end of the first pressing piece 31 opposite to the insertion port 11 in the Y-axis direction is connected to the corresponding connecting portion 30.
  • a second pressing piece 32 is connected to the end of the first pressing piece 31 on the insertion port 11 side in the Y-axis direction.
  • the 2nd pressing piece 32 is rectangular plate shape, and it inclines with respect to the one surface 20 of the said terminal part 2 so that it may approach the corresponding terminal part 2, so that it approaches the insertion port 11 in the Y-axis direction.
  • a third pressing piece 33 is connected to the end of the second pressing piece 32 on the side opposite to the first pressing piece 31 in the Y-axis direction.
  • the third pressing piece 33 has a rectangular plate shape and is inclined with respect to the one surface 20 of the terminal portion 2 so as to approach the corresponding terminal portion 2 as the distance from the insertion port 11 increases in the Y-axis direction. .
  • the third pressing piece 33 and the second pressing piece 32 constitute a structure having a substantially V-shaped cross section perpendicular to the Z-axis direction.
  • Each pressing portion 3 is closest to the one surface 20 of the corresponding terminal portion 2 at a contact portion 34 formed by a connecting portion between the second pressing piece 32 and the third pressing piece 33.
  • each pressing portion 3 is on the corresponding terminal portion 2 side in the X-axis direction (in a direction approaching the terminal portion 2) in a plane including both the X-axis direction and the Y-axis direction (XY plane). It has the contact part 34 curved so that it might become convex.
  • the contact portion 34 is curved with a predetermined radius of curvature.
  • the first connecting portion 30A connects the first terminal portion 2A and the first pressing portion 3A
  • the second connecting portion 30B connects the second terminal portion 2B and the second pressing portion 3B.
  • Each connecting portion 30 protrudes from the end of the corresponding terminal portion 2 opposite to the insertion port 11 in the Y-axis direction to the opposite side of the insertion port 11 (in a direction away from the insertion port 11).
  • the first terminal portion 2A and the first pressing portion 3A are arranged in the Y-axis direction from the end opposite to the insertion port 11 (the upper end in FIG. 1B).
  • the first connecting portions 30A provided so as to protrude in the direction are connected to each other.
  • Each connecting portion 30 has a curved portion 301.
  • the curved portion 301 is convex on the side opposite to the insertion port 11 in the Y-axis direction (in a direction away from the insertion port 11) in a plane including both the X-axis direction and the Y-axis direction (XY plane). Is so curved.
  • the bending portion 301 is curved in an arc shape.
  • the inner diameter of the curved portion 301 substantially matches the distance between the first pressing piece 31 of the corresponding pressing portion 3 and the terminal portion 2.
  • the two pressing portions 3 and the two connecting portions 30 configured as described above are formed integrally with the cylindrical body 120 and constitute the terminal block 12 together with the cylindrical body 120.
  • the gap 23 of the cylindrical body 120 extends to the tip of the third pressing piece 33 through each connecting portion 30.
  • the two connecting portions 30 are separated in the Z-axis direction by the gap 23.
  • the two pressing portions 3 are separated in the Z-axis direction by a gap 23.
  • the spring block 13 includes a locking part 4 and a support part 7.
  • the spring block 13 is made of, for example, stainless steel (SUS).
  • the spring block 13 is composed of a metal plate that is thinner (thin) than the terminal block 12.
  • the terminal device 1 is a two-pole terminal device
  • the locking portion 4 includes a first locking piece 4A and a second locking piece 4B.
  • the locking part 4 has a slit 45 between the first locking piece 4A and the second locking piece 4B in the Z-axis direction. The details of the slit 45 will be described in the column “(2.3.3) Spring block slit”.
  • FIG. 1B shows only the first locking piece 4A out of the first locking piece 4A and the second locking piece 4B.
  • the first locking piece 4 ⁇ / b> A and the second locking piece 4 ⁇ / b> B employ a configuration that is plane-symmetric in the Z-axis direction in which they are arranged. Therefore, unless otherwise specified, the first locking piece 4A illustrated in FIG. 1B will be described below, and the description of the second locking piece 4B will be omitted as appropriate. Further, when the first locking piece 4A and the second locking piece 4B are not distinguished from each other, they may be simply referred to as “locking pieces”.
  • the lock part 4 and the support part 7 are integrally formed.
  • the two locking pieces (4A and 4B) and the support portion 7 are made of a single metal plate.
  • the lock part 4 and the support part 7 which comprise the spring block 13 are formed by stamping and bending to one metal plate.
  • the dimension of the spring block 13 in the Y-axis direction is defined to be equal to or smaller than the dimension of the opposing portion 5 in the terminal block 12 in the Y-axis direction.
  • the dimension in the Y-axis direction of the spring block 13 is the same as the dimension in the Y-axis direction of the facing portion 5 in the terminal block 12.
  • the dimension of the spring block 13 in the X-axis direction is defined to be slightly smaller than the distance between each terminal portion 2 and the facing portion 5 in the terminal block 12.
  • the dimension of the spring block 13 in the Z-axis direction is defined to be slightly smaller than the interval between the first side wall 6A and the second side wall 6B in the terminal block 12.
  • the first locking piece 4 ⁇ / b> A and the second locking piece 4 ⁇ / b> B constituting the locking part 4 are accommodated in an accommodation space 50 formed inside the cylindrical body 120. Placed in.
  • Each of the first locking piece 4A and the second locking piece 4B has a substantially rectangular plate shape that is curved as a whole.
  • Each of the first lock piece 4 ⁇ / b> A and the second lock piece 4 ⁇ / b> B includes an extension portion 41 and a spring portion 42.
  • the extension part 41 and the spring part 42 are integrally formed.
  • each lock piece is in contact with the inner side surface 51 of the facing part 5 and extends in the Y-axis direction along the inner side surface 51.
  • the extension 41 has one end (the lower end in FIG. 1B) on the insertion port 11 side in the Y-axis direction as a base end to the opposite side of the insertion port 11 from the base end (in a direction away from the insertion port 11). ) Protruding.
  • the spring part 42 of each locking piece will be described with reference to FIG. 1B, for example.
  • the spring part 42 of the first locking piece 4A includes the second portion 22 on the one surface 20 of the first terminal part 2A, and It arrange
  • part 22 here is a site
  • Each of the first locking piece 4A and the second locking piece 4B contacts the electric wire 100 inserted along the Y-axis direction from the insertion port 11, and moves the electric wire 100 toward the insertion port 11 side. It is configured to regulate. For example, when the electric wire 100 is inserted from the insertion port 11 corresponding to the first terminal portion 2A, the electric wire 100 is introduced between the one surface 20 of the first terminal portion 2A and the first locking piece 4A. In the state, the spring portion 42 is configured to sandwich the electric wire 100 between the second portion 22. That is, the electric wire 100 is pressed against the second portion 22 of the one surface 20 of the first terminal portion 2A by the spring portion 42 of the first locking piece 4A, and the first terminal portion 2A and the electric wire 100 are A moderate contact pressure is generated during
  • the spring portion 42 protrudes from the base end of the extension portion 41 and protrudes toward the insertion port 11 (toward the insertion port 11). And a curved portion 420 that is curved.
  • the spring portion 42 applies an elastic force by the curved portion 420.
  • the curved portion 420 is curved with a predetermined radius of curvature.
  • the spring portion 42 is inclined with respect to the one surface 20 of the terminal portion 2 so as to approach the corresponding terminal portion 2 as the distance from the insertion port 11 increases in the Y-axis direction. And the spring part 42 contacts the electric wire 100 in the front-end edge 43 nearest to the one surface 20 of the said terminal part 2, and controls the movement to the insertion port 11 side of the electric wire 100.
  • the spring portion 42 protrudes from the connecting portion with the extension portion 41 in the direction in which the electric wire 100 is inserted (the positive direction of the Y axis), and the tip edge 43 of the spring portion 42 corresponds to the one surface 20 of the terminal portion 2. It is inclined with respect to the one surface 20 of the terminal portion 2 so as to be close to.
  • the spring portion 42 In a state where the electric wire 100 is introduced between the one surface 20 of the terminal portion 2 and the spring portion 42, the spring portion 42 contacts the electric wire 100 at the tip edge 43. Therefore, when a force in a direction (the negative direction of the Y axis) that moves the electric wire 100 toward the insertion port 11 is applied to the electric wire 100, the spring portion 42 causes the electric wire 100 to bite into the electric wire 100. The wire 100 is prevented from coming off by being hooked on the wire.
  • the locking part 4 of the present embodiment has a pair of protrusions that fit in the first recess 63A and the second recess 63B provided on the inner side surface 60 of the first side wall part 6A and the second side wall part 6B, respectively. 44.
  • the locking part 4 has a first protrusion 44A and a second protrusion 44B.
  • 44 A of 1st protrusions are provided in the 1st side surface 46 (refer FIG. 2) facing the 1st side wall part 6A in the lock part 4.
  • the 2nd protrusion 44B is provided in the 2nd side surface 47 (refer FIG. 2) facing the 2nd side wall part 6B.
  • the first side face 46 and the second side face 47 correspond to both end faces in the Z-axis direction of the lock portion 4.
  • the first side surface 46 is also one side surface of the extension portion 41 of the first locking piece 4A that faces the first side wall portion 6A.
  • the second side surface 47 is also one side surface of the extension portion 41 of the second locking piece 4B facing the second side wall portion 6B.
  • the first locking piece 4A has a first protrusion 44A that fits into the first recess 63A of the first side wall 6A.
  • the second locking piece 4B has a second protrusion 44B that fits into the second recess 63B of the second side wall portion 6B.
  • first protrusion 44A and the second protrusion 44B are not distinguished from each other, they may be simply referred to as “projections 44”.
  • the locking part 4 is held by the side wall part 6 with the projection 44 fitted in the concave part 63.
  • “holding” does not mean that the protrusion 44 is achieved only by fitting into the recess 63.
  • the spring block 13 is temporarily held by the terminal block 12.
  • the projection 44 is fitted in the recess 63 in the accommodation space 50, the spring block 13 is further brought into contact with the facing portion 5 of the terminal block 12 and a cover of the case 8 described later. Retained.
  • each protrusion 44 is provided in the extension part 41 of a corresponding locking piece.
  • the first protrusion 44A extends in the negative direction of the Z axis from the first side face 46 of the extension 41 of the first locking piece 4A that faces the first side wall 6A. It protrudes.
  • each protrusion 44 is provided between the center and one end (lower end of FIG. 1B) in one direction (Y-axis direction) of the extension part 41.
  • each protrusion 44 is positioned at one end side of the extension portion 41 on the insertion port 11 side in the Y-axis direction, that is, in the vicinity of the connection portion between the extension portion 41 and the spring portion 42.
  • the dimension from the tip of the first protrusion 44A to the tip of the second protrusion 44B in the Z-axis direction is the dimension from the inner side surface 60 of the first side wall 6A to the inner side surface 60 of the second side wall 6B in the terminal block 12. It is defined somewhat larger.
  • the dimension of each protrusion 44 in the Y-axis direction is defined to be slightly smaller than the dimension of the recess 63 in the Y-axis direction.
  • the locking part 4 of this embodiment has the protrusion 44 fitted in the recessed part 63 provided in each side wall part 6, even if the insertion / extraction of the electric wire 100 is repeated, the locking part It is possible to reduce the possibility that the 4 is displaced in the accommodation space 50. In short, even if the locking part 4 receives a force from the electric wire 100, the protrusion 44 and the recessed part 63 function as a stopper, so that the positional deviation of the locking part 4 in the accommodation space 50 is suppressed. Therefore, for example, even if the electric wire 100 is repeatedly inserted and removed, the force for pinching the electric wire 100 between the locking portion 4 and the terminal portion 2 changes, and the contact state of the electric wire 100 with respect to the terminal portion 2 becomes unstable. Can be suppressed, and a decrease in connection reliability can be suppressed.
  • the “positional displacement” referred to here is, for example, movement of the lock portion 4 along the Y-axis direction in the accommodation space 50 accompanying insertion / removal of the electric wire 100 or chain around the rotation axis parallel to the Z-axis direction. This means rotation of the lock part 4. Due to such a displacement, the contact state of the electric wire 100 with respect to the terminal portion 2 may become unstable. That is, for example, when the electric wire 100 is inserted, the locking portion 4 receives a moment from the electric wire 100 and tries to rotate in a direction in which the locking portion 4 side is separated from the inner surface 51 of the facing portion 5 with the support portion 7 side as a fulcrum. .
  • This moment is a force that attempts to rotate the lock portion 4 counterclockwise as viewed in the negative direction of the Z-axis, and includes a force component along the positive direction of the Y-axis at the distal end edge 43.
  • the locking portion 4 receives a moment opposite to the above moment from the electric wire 100 when the electric wire 100 is pulled out, for example, and the support portion 7 side from the inner side surface 51 of the facing portion 5 with the locking portion 4 side as a fulcrum. Try to rotate away.
  • This moment is a force to rotate clockwise as viewed in the negative direction of the Z-axis, and includes a force component along the negative direction of the Y-axis at the tip edge 43.
  • the protrusion 44 and the concave portion 63 function as a stopper, even if the locking portion 4 receives the moment as described above from the electric wire 100, the positional deviation is suppressed.
  • the concave portion 63 is provided on the side wall portion 6 and the protrusion 44 is provided on the side surface (the first side surface 46 and the second side surface 47) of the locking portion 4, the locking portion 4 side (or the support portion 7 side) is provided. Rotation in a direction away from the inner surface 51 of the facing portion 5 can be suppressed.
  • each protrusion 44 is provided between the center and the lower end in the Y-axis direction of the extension portion 41 (closer to the lower end side in the illustrated example). Therefore, compared with the case where each protrusion 44 is provided between the center and the upper end in the Y-axis direction of the extension portion 41, for example, the locking portion 4 is opposed to the connecting portion side with the upper end side of the extension portion 41 as a fulcrum. Rotation in the direction away from the portion 5 can be effectively suppressed.
  • the first locking piece 4A and the second locking piece 4B are integrally formed to constitute one spring block 13 together with the support portion 7. Therefore, for example, when the insertion and removal of the electric wire 100 connected to the first terminal portion 2A is repeated, if the projection 44 and the recess 63 are not present, the entire spring block 13 may be displaced. That is, not only the contact state between the first terminal portion 2A and the electric wire 100 by the first locking piece 4A but also the contact between the second terminal portion 2B and the other electric wire 100 by the second locking piece 4B. It can also affect the condition. By providing the protrusion 44 and the recess 63, it is possible to suppress a decrease in connection reliability with respect to both the first terminal portion 2A and the second terminal portion 2B.
  • each protrusion 44 of this embodiment is formed in a rectangular parallelepiped shape. That is, as shown in FIG. 2, each end face in the Y-axis direction of each protrusion 44 is formed as a first flat face 441 and a second flat face 442 along the protruding direction of the protrusion 44.
  • the first flat surface 441 is the upper end surface
  • the second flat surface 442 is the lower end surface.
  • the opening shape of each recess 63 is rectangular, and is substantially the same shape as the cross-sectional shape of each protrusion 44 perpendicular to the Z-axis direction.
  • the first locking piece 4A is To a moment including a force component along the positive direction of the Y-axis through the tip edge 43.
  • the 2nd lock piece 4B is integrally formed with the 1st lock piece 4A through the support part 7, the 2nd lock piece 4B similarly receives a moment.
  • the first flat surface 441 of each protrusion 44 is flat, the first flat surface 441 is caught by the surface contact with the inner peripheral surfaces of the first recess 63A and the second recess 63B. Therefore, the position shift to the positive direction of the Y axis of the lock portion 4 due to the insertion of the electric wire 100 can be effectively suppressed.
  • the first locking piece 4A is: A moment including a component along the negative direction of the Y-axis is received from the electric wire 100 through the tip edge 43. Since the second locking piece 4B is formed integrally with the first locking piece 4A through the support portion 7, the second locking piece 4B similarly receives a moment. However, since the 2nd flat surface 442 of each protrusion 44 is flat, these 2nd flat surfaces 442 are hooked by the surface contact with respect to the internal peripheral surface of 63 A of 1st recessed parts, and the 2nd recessed part 63B, respectively. Therefore, the position shift to the negative direction of the Y-axis of the lock portion 4 due to the drawing of the electric wire 100 can be effectively suppressed.
  • the number of protrusions 44 is not particularly limited.
  • the protrusion 44 may be provided only on one of the first locked piece 4A and the second locked piece 4B.
  • the recess 63 may be provided only on the side wall 6 facing the locking piece having the projection 44 in the Z-axis direction.
  • protrusions 44 are provided on both the first lock piece 4A and the second lock piece 4B as shown in FIG. Preferably it is.
  • a plurality of protrusions 44 may be provided so as to be aligned along the Y-axis direction with respect to one locking piece.
  • the several recessed part 63 may be provided along with the Y-axis direction.
  • the support part 7 is a member that supports the two pressing parts 3.
  • the support portion 7 is disposed in the accommodation space 50 formed inside the cylindrical body 120.
  • the support portion 7 and the lock portion 4 (the first lock piece 4A and the second lock piece 4B) are integrally formed.
  • the support portion 7 is disposed so as to face the one surface 20 of the two terminal portions 2 via the two pressing portions 3.
  • the support portion 7 is configured to generate an elastic force that pushes each pressing portion 3 toward the two terminal portions 2 that face the two pressing portions 3. That is, the support part 7 supports the pressing part 3 through this elastic force.
  • the support portion 7 includes a base portion 71 and a pair of support pieces (a first support piece 72A and a second support piece 72B).
  • the base 71 has a rectangular plate shape and is substantially parallel to one surface 20 of the two terminal portions 2.
  • the end of the base 71 on the side of the insertion port 11 in the Y-axis direction is connected to the extension 41 of the first locking piece 4A and the extension 41 of the second locking piece 4B.
  • the end of the base 71 opposite to the two locking pieces in the Y-axis direction is connected to the first support piece 72A and the second support piece 72B.
  • the base portion 71 connects the two extension portions 41, the first support piece 72A, and the second support piece 72B.
  • the base portion 71 is in contact with the inner side surface 51 of the facing portion 5.
  • the first support piece 72A and the second support piece 72B adopt a configuration that is plane-symmetric in the Z-axis direction in which they are arranged.
  • FIG. 1B shows only the first support piece 72A out of the first support piece 72A and the second support piece 72B.
  • Each of the first support piece 72A and the second support piece 72B has a flat plate portion 721 and a curved portion 722.
  • Each flat plate portion 721 is formed in a flat plate shape. When the electric wire 100 is not inserted, the thickness direction of each flat plate portion 721 substantially coincides with the X-axis direction.
  • Each curved portion 722 is curved so as to protrude from one end (upper end in FIG.
  • each curved portion 722 is configured to connect one end of the flat plate portion 721 and the base portion 71 on the side opposite to the insertion port 11 in the Y-axis direction.
  • the base 71 faces the first surface 723 (see FIG. 4A) of each flat plate portion 721.
  • Each curved portion 722 is curved in an arc shape with a predetermined curvature radius.
  • the inner diameter of the curved portion 722 substantially matches the distance between the base portion 71 and the flat plate portion 721.
  • the support portion 7 is formed in a substantially U shape when viewed along the Z-axis direction.
  • the flat plate portion 721 of the first support piece 72 ⁇ / b> A is a second side opposite to the first surface 723 in the thickness direction in a state where the electric wire 100 is not inserted into the first pressing portion 3 ⁇ / b> A.
  • the surface 724 is in contact with the first pressing piece 31 of the first pressing portion 3A.
  • one surface (second surface 724) that contacts the surface of the first pressing piece 31 of the first pressing portion 3A is the same as the surface of the first pressing piece 31. It is preferable that they are parallel.
  • the second surface 724 of the second support piece 72B has a second surface 724 opposite to the first surface 723 in the thickness direction when the electric wire 100 is not inserted into the second pressing portion 3B. It is in contact with the first pressing piece 31 of the second pressing portion 3B.
  • surfaces of the flat plate portion 721 of the second support piece 72B and the first pressing piece 31 of the second pressing portion 3B that are opposed to each other are in surface contact with each other.
  • one surface (second surface 724) that contacts the surface of the first pressing piece 31 of the second pressing portion 3B is the surface of the first pressing piece 31. It is preferable that they are parallel.
  • each flat plate portion 721 is in a non-contact state with the first pressing piece 31 when the electric wire 100 is not inserted up to the corresponding pressing portion 3, and when the electric wire 100 is inserted up to the corresponding pressing portion 3.
  • the first pressing piece 31 may be in contact with the first pressing piece 31.
  • the flat plate portion 721 and the first pressing piece 31 need to be configured to come into contact with each other due to the bending of the pressing portion 3.
  • the first pressing portion 3 ⁇ / b> A is in the negative direction of the X axis in a state where the electric wire 100 is inserted up to the first pressing portion 3 ⁇ / b> A. Accordingly, the first support piece 72A receives a force from the first pressing portion 3A.
  • the first support piece 72A causes the bending portion 722 to apply an elastic force to the first pressing portion 3A in the positive direction of the X axis. Therefore, compared with the case where the support part 7 is not provided, the force which pushes the electric wire 100 to the 1st terminal part 2A side is heightened.
  • the first pressing portion 3A when the support portion 7 is not provided, when the electric wire 100 is repeatedly inserted and removed, the first pressing portion 3A has a negative X-axis orientation even if the electric wire 100 is not inserted. It becomes easy to maintain the state bent to (metal fatigue). In short, when the support portion 7 is not provided, the first pressing portion 3A may be plastically deformed, and the distance between the first pressing portion 3A and the first terminal portion 2A may be increased. As a result, when the support portion 7 is not provided, the force for pressing the electric wire 100 toward the first terminal portion 2A side is weakened only by the first pressing portion 3A, and between the first terminal portion 2A and the electric wire 100 is weakened. The contact pressure may decrease.
  • the support portion 7 since the support portion 7 is provided as described above, a decrease in contact pressure can be suppressed. That is, a decrease in connection reliability can be suppressed.
  • explanation is omitted, similarly, even in a state where the electric wire 100 is inserted into the second pressing portion 3B, the contact pressure between the second terminal portion 2B and the electric wire 100 is passed through the second support piece 72B. The decrease can be suppressed.
  • the spring block 13 receives a moment from the electric wire 100 when the electric wire 100 is pulled out, and rotates in a direction in which the support portion 7 side is separated from the inner side surface 51 of the facing portion 5 with the locking portion 4 side as a fulcrum. try to.
  • the support portion 7 since the support portion 7 is in contact with the two pressing portions 3 in the X-axis direction as in the present embodiment, the support portion 7 has a function of suppressing the rotation together with the protrusion 44 and the recess portion 63 described above. It can be said that it has.
  • the spring block 13 is positioned with respect to the terminal block 12 in the X-axis direction and the Y-axis direction by bringing the extension portion 41 and the base portion 71 into contact with the inner surface 51 of the facing portion 5 and fitting each projection 44 into the recess 63. Is made.
  • the spring block 13 may be in contact with the case 8 at the two curved portions 722 of the support portion 7 in a state where the spring block 13 is housed in the case 8 described later together with the terminal block 12. In this case, the spring block 13 can be easily positioned in the accommodation space 50 even if the protrusion 44 and the recess 63 are not provided in the terminal device 1.
  • the positioning of the spring block 13 with respect to the terminal block 12 is facilitated by fitting each projection 44 into the recess 63. Furthermore, since each projection 44 fits into the recess 63, the spring block 13 is temporarily held by the terminal block 12, so that it is easy to carry by combining the spring block 13 and the terminal block 12. In short, the spring block 13 and the terminal block 12 can be handled as one component, and for example, the workability at the time of manufacturing the terminal device 1 is excellent.
  • the support part 7 is formed integrally with the lock part 4. That is, the spring block 13 constituted by the support portion 7 and the first locking piece 4A and the second locking piece 4B is a single member, and has the function of restricting the movement of the electric wire 100 and the terminal portion 2. And a function of suppressing a decrease in contact pressure between the electric wires 100. Therefore, the number of members can be reduced.
  • the support portion 7 is preferably formed of a material having a higher elastic modulus than the pressing portion 3 and the connecting portion 30.
  • the support part 7 is integrally formed with the lock part 4 made of stainless steel having a higher elastic modulus than copper with respect to the terminal block 12 made of copper as an example. Therefore, it can be said that it is desirable also about the elastic modulus that the support part 7 is formed integrally with the lock part 4.
  • the lock part 4 of the spring block 13 has a slit 45 as shown in FIG.
  • the slit 45 penetrates in the direction (X-axis direction) in which the terminal portion 2 and the facing portion 5 are arranged.
  • the slit 45 penetrates in the thickness direction of the lock portion 4.
  • the slit 45 is disposed between the first protrusion 44A and the second protrusion 44B.
  • the slit 45 is configured such that one end thereof extends to the leading edge 43 of each locking piece of the locking part 4 and the leading edge 43 is separated into two. In other words, the first locking piece 4A and the second locking piece 4B are separated from each other via the slit 45 in the Z-axis direction.
  • a through-hole 48 penetrating in the thickness direction is formed at the central portion in the Z-axis direction at the portion where the lock portion 4 and the support portion 7 are connected.
  • the through hole 48 has a circular opening shape.
  • the slit 45 extends from the through hole 48 to the tip edge 43.
  • the width of the slit 45 in the Z-axis direction is set to a predetermined dimension from the through hole 48 to slightly before the front end edge 43, and is set to a dimension narrower than the predetermined dimension from there to the front end edge 43.
  • the dimension in the Z-axis direction of the curved portion 420 of the spring portion 42 is set smaller than the dimension in the Z-axis direction of the tip edge 43.
  • the through hole 48 is not an essential component of the terminal device 1, and the through hole 48 may be omitted.
  • the locking part 4 since the locking part 4 has such a slit 45, the locking is performed so that the first locking piece 4A and the second locking piece 4B approach each other in the Z-axis direction.
  • the part 4 can be bent.
  • the lock portion 4 by bending the lock portion 4 in this way, the distance from the tip of the first projection 44A to the tip of the second projection 44B in the Z-axis direction can be reduced.
  • the operation of inserting the spring block 13 into the terminal block 12 and fitting the protrusions 44 into the recesses 63 can be easily performed.
  • the projections 44 may be in contact with the inner side surfaces 60 of the first side wall portion 6A and the second side wall portion 6B and be damaged before the projections 44 are fitted into the recesses 63. is there.
  • the provision of the slit 45 can reduce the possibility that the protrusion 44 may damage the inner surface 60.
  • FIG. 4A is a cross-sectional view taken along line Z1-Z1 of FIG. 1A. Moreover, in FIG. 4A, the electric wire 100 is shown by the imaginary line (two-dot chain line).
  • the first terminal portion 2A, the first pressing portion 3A, and the first locking piece 4A will be described, but the second terminal portion 2B, the second pressing portion 3B, and the second locking portion will be described. The same applies to the dimensional relationship with the piece 4B.
  • the first distance L1 that is the distance between the first pressing portion 3A and the first portion 21 is between the first locking piece 4A and the second portion 22 of the locking portion 4. It is set to be larger than the second distance L2, which is a distance.
  • the first distance L1 is the shortest distance between the contact portion 34 of the first pressing portion 3A closest to the one surface 20 of the first terminal portion 2A and the one surface 20 of the first terminal portion 2A. is there.
  • the second distance L2 is between the tip edge 43 of the first locking piece 4A closest to the one surface 20 of the first terminal portion 2A and the one surface 20 of the first terminal portion 2A. Is the shortest distance.
  • the third pressing piece 33 is separated from the first terminal portion 2A as it approaches the insertion port 11 in the Y-axis direction. It is inclined with respect to the one surface 20 of the first terminal portion 2A. That is, since the third pressing piece 33 is inclined so as to be away from the first terminal portion 2A as the distance from the contact portion 34 is increased, the third pressing piece 33 has an end edge opposite to the contact portion 34 in the third pressing piece 33.
  • the distance from the first terminal portion 2A is larger than that of the contact portion 34.
  • the shortest distance between the edge of the third pressing piece 33 opposite to the contact portion 34 and the one surface 20 of the first terminal portion 2A is defined as the third distance L3. To do.
  • the first distance L1 is larger than the second distance L2
  • the third distance L3 is larger than the first distance L1 (L2 ⁇ L1 ⁇ L3).
  • the wire diameter ⁇ X of the electric wire 100 inserted from the insertion port 11 is preferably larger than the first distance L1 and smaller than the third distance L3.
  • the wire diameter ⁇ X of the electric wire 100 here is the wire diameter ⁇ X of the electric wire 100 defined as an electric wire that can be connected to the terminal device 1.
  • the diameter of the core wire inserted from the insertion port 11 is the wire diameter ⁇ X.
  • the first distance L1 is larger than the second distance L2
  • the wire diameter ⁇ X is larger than the first distance L1
  • the line The third distance L3 becomes larger than the diameter ⁇ X (L2 ⁇ L1 ⁇ X ⁇ L3).
  • the wire diameter ⁇ X here means the outer diameter of the electric wire 100 inserted from the insertion port 11 (in the case of an insulated wire, the diameter of the core wire), and conforms to, for example, the IEC (International Electrotechnical Commission) standard, It is determined appropriately.
  • FIGS. 4A and 4B are cross-sectional views taken along the line Z1-Z1 of FIG. 1A. Moreover, in FIG. 4A and 4B, the electric wire 100 is shown with the imaginary line (two-dot chain line).
  • FIG. 4A shows the terminal device 1 in a state where the electric wire 100 is not connected
  • FIG. 4B shows the terminal device 1 in a state where the electric wire 100 is connected.
  • the worker inserts the electric wire 100 to be connected into the terminal device 1 from the insertion port 11 in the positive direction of the Y axis.
  • the tip of the electric wire 100 is first introduced between the first locking piece 4A and the first terminal portion 2A (second portion 22).
  • the curved portion 420 is elastically deformed so that the radius of curvature of the curved portion 420 of the spring portion 42 becomes small. Therefore, a force in a direction to press the electric wire 100 against the first terminal portion 2A acts on the electric wire 100 from the first locking piece 4A.
  • the tip of the electric wire 100 is introduced between the first pressing portion 3A and the first terminal portion 2A (first portion 21).
  • the distance between the first distance L1, the third distance L3, and the wire diameter ⁇ X of the electric wire 100 is “L1 ⁇ X ⁇ L3”.
  • the tip end of the electric wire 100 is guided by the third pressing piece 33 and is drawn between the contact portion 34 and the first terminal portion 2A.
  • the contact portion 34 is pushed by the tip of the electric wire 100, and the contact portion 34 of the first pressing portion 3A is displaced away from the one surface 20 of the first terminal portion 2A.
  • the first connecting portion 30A is elastically deformed so that the radius of curvature of the bending portion 301 is increased. Therefore, a force in a direction of pressing the electric wire 100 against the first terminal portion 2A acts on the electric wire 100 from the first pressing portion 3A.
  • the support portion 7 is an elastic member that presses the first pressing portion 3A toward the first terminal portion 2A side facing the first pressing portion 3A (that is, in the positive direction of the X axis). Power is applied. Therefore, the force which pushes the electric wire 100 to the 1st terminal part 2A side is further heightened.
  • the electric wire 100 in a state where the electric wire 100 is inserted to a predetermined position, the electric wire 100 is pressed against the one surface 20 (first portion 21) of the first terminal portion 2A by the first pressing portion 3A. As a result, an appropriate contact pressure is generated between the first terminal portion 2A and the electric wire 100, and the electric wire 100 and the first terminal portion 2A are electrically connected. Furthermore, in this state, when the tip edge 43 of the first locking piece 4A contacts the electric wire 100, the movement of the electric wire 100 in the direction in which the electric wire 100 is pulled out from the insertion port 11 is restricted, and the electric wire 100 is disconnected. A stop is made.
  • each protrusion 44 of the lock part 4 is in a state of being fitted in the recess 63. Therefore, even if the spring block 13 receives a moment from the electric wire 100 through the leading edge 43 due to the insertion of the electric wire 100, the spring block 13 is prevented from moving in the positive direction of the Y axis and rotating around the rotation axis parallel to the Z axis direction. Is done.
  • the first locking piece 4A contacts the first pressing portion 3A.
  • These positional relationships and dimensions are defined so that they do not. That is, the positional relationship and dimensions in the Y-axis direction are defined so that the first pressing portion 3A is not positioned on the locus of the distal end edge 43 of the first locking piece 4A.
  • the magnitude of the force required for inserting the electric wire 100 can be kept small.
  • the distance between the first portion 21 and the second portion 22 in the Y-axis direction is as small as possible while preventing the first locking piece 4A from coming into contact with the first pressing portion 3A. . If the distance between the 1st site
  • the terminal device 1 further includes a case 8 and a release member 9 in addition to the terminal block 12 and the spring block 13 described above.
  • 5A and 5B are perspective sectional views taken along line Z2-Z2 of FIG. 6A, respectively.
  • 6B is a cross-sectional view taken along line Z1-Z1 of FIG. 6A.
  • gap SP1 mentioned later is shown with the dashed-dotted line, the space
  • Case 8 is made of an electrically insulating material, for example, a synthetic resin.
  • the case 8 is formed in a box shape having a space for accommodating the terminal block 12 and the spring block 13.
  • the case 8 further includes a cover coupled to the body so as to close the opening surface of the terminal chamber 80. That is, in a state where the terminal block 12 and the spring block 13 are accommodated in the terminal chamber 80, the opening surface of the terminal chamber 80 is closed by the cover.
  • the cover is in contact with each curved portion 722 of the support portion 7 in the spring block 13.
  • An insertion hole 81 that penetrates the bottom plate of the case 8 in the Y-axis direction is formed at a position corresponding to the insertion port 11 in the case 8.
  • Two insertion holes 81 have a circular opening shape and are formed so as to correspond to the two electric wires 100.
  • the inner diameter of the insertion hole 81 is not constant, and the inner diameter of the insertion hole 81 gradually decreases from the outer side to the inner side of the case 8 of the insertion hole 81 in a part in the Y-axis direction so as to attract the electric wire 100. .
  • the insertion port 11 is not shown, but in the terminal device 1 including such a case 8, the insertion hole 81 of the case 8 corresponds to the insertion port 11.
  • an operation window 82 penetrating the side wall of the case 8 in the X-axis direction is formed at a position corresponding to the gap 23 in the case 8.
  • the operation window 82 is a hole through which a guide projection 93 of the release member 9 described later is passed.
  • a pair of bearing portions 83 for holding the release member 9 is formed on a pair of inner surfaces facing the Z-axis direction among the inner surfaces of the operation window 82.
  • a shaft portion 91 of the release member 9 described later is inserted into the pair of bearing portions 83.
  • the release member 9 is a member for releasing the restriction of the movement of the electric wire 100 by the locking part 4, that is, the prevention of the electric wire 100 from coming off by the locking part 4.
  • the release member 9 is made of an electrically insulating material such as a synthetic resin.
  • the release member 9 is configured to be movable relative to the terminal portion 2 between a normal position and a release position.
  • the normal position refers to the position of the release member 9 when the release member 9 is in a state in which the locking of the electric wire 100 by the locking part 4 is not released.
  • the release position refers to the position of the release member 9 when the release member 9 is in a state in which the locking of the electric wire 100 by the locking part 4 is released.
  • release member 9 moves from the normal position to the release position, a force in a direction away from the second portion 22 is applied to the lock portion 4, and the movement of the electric wire 100 by the lock portion 4 is regulated (disengaged).
  • Release (stop). 5A to 6B show a state in which the release member 9 is in the normal position.
  • the release member 9 has a shaft portion 91, an operation portion 92, and a guide protrusion 93.
  • the shaft portion 91 is formed in a cylindrical shape along the Z-axis direction.
  • the release member 9 is held by the case 8 in a state of being rotatable about the shaft portion 91 with respect to the case 8 by inserting both ends of the shaft portion 91 in the Z-axis direction into the pair of bearing portions 83.
  • the As a result, the release member 9 can be rotated (moved) between the normal position and the release position with the shaft portion 91 as the center.
  • the bearing portion 83 is opened in the negative direction of the X axis.
  • the movement of the shaft portion 91 in the negative direction of the X axis is restricted by the two connecting portions 30 of the terminal block 12, and the shaft portion 91 from the bearing portion 83 is controlled. Is prevented from falling off.
  • the surface of the release member 9 that faces the bottom surface of the terminal chamber 80 is preferably formed in a substantially arc shape with the shaft portion 91 as the center.
  • the operation unit 92 is a part that is operated when the release member 9 is moved from the normal position to the release position.
  • the release member 9 is held by the case 8 so that at least a part of the operation portion 92 is exposed from the case 8.
  • the operation unit 92 is set such that the dimension in the Z-axis direction is larger than the width of the operation window 82 of the case 8. Therefore, the operation portion 92 also functions as a stopper that restricts the movable range of the release member 9 by contacting the peripheral portion of the operation window 82 in the case 8 when the release member 9 is operated.
  • the guide protrusion 93 restricts the moving direction of the electric wire 100 in the Y-axis direction.
  • the release member 9 is held by the case 8 so that at least a part of the guide protrusion 93 is inserted into the accommodation space 50 through the operation window 82 of the case 8 and the gap 23 of the terminal portion 2.
  • the guide protrusion 93 has a first protrusion 931 and a second protrusion 932 located on both sides of the leading edge 43 of the locking part 4 in the Y-axis direction.
  • the first projecting piece 931 is positioned on the insertion port 11 (insertion hole 81) side (between the locking unit 4 and the insertion port 11) with respect to the locking unit 4 in the Y-axis direction.
  • the second projecting piece 932 is positioned on the opposite side of the insertion port 11 (insertion hole 81) with respect to the lock portion 4 in the Y-axis direction. That is, the first projecting piece 931 and the second projecting piece 932 are in a positional relationship such that the leading edge 43 of the locking part 4 is sandwiched in the accommodation space 50.
  • the first protruding piece 931 has a trapezoidal plate shape
  • the second protruding piece 932 has a rectangular plate shape.
  • the first projecting piece 931 includes an action part 94 and an avoidance part 95.
  • the corner between the upper base of the trapezoid (the shorter side of the two parallel sides) and the trapezoidal leg (one of the two non-parallel sides) corresponds to the action portion 94, and a portion including the trapezoidal upper base corresponds to the avoidance portion 95.
  • the action portion 94 is a portion that applies a force in a direction away from the second portion 22 to the lock portion 4 when the release member 9 moves from the normal position to the release position. That is, when the release member 9 moves from the normal position to the release position, the action portion 94 comes into contact with both the first lock piece 4A and the second lock piece 4B of the lock part 4. A force in a direction away from the one surface 20 of the terminal portion 2 is applied to the locking portion 4.
  • the action portion 94 faces a portion of the lock portion 4 near the tip edge 43.
  • the release member 9 can apply a relatively large moment to the lock portion 4 with the curved portion 420 of the spring portion 42 as a fulcrum. As a result, the lock member 4 is displaced with a relatively small force. Can be made.
  • the release portion 9 can continue to contact the vicinity of the distal end edge 43 of the lock portion 4 by the action portion 94, and the spring portion 42 with respect to the lock portion 4.
  • a relatively large moment can be applied with the curved portion 420 as a fulcrum.
  • the operator when the connection between the terminal device 1 and the electric wire 100 is released, the operator operates the release member 9 to release the retaining of the electric wire 100 by the locking portion 4 and from the insertion port 11.
  • the electric wire 100 can be removed. That is, when the operator pushes the operation unit 92 in the direction indicated by the arrow A1 in FIG. 6B from the state where the release member 9 is in the normal position, the release member 9 moves to the release position about the shaft portion 91. At this time, the action portion 94 moves in the direction indicated by the arrow A2 in FIG. 6B and applies a force in a direction away from the second portion 22 to the distal end edge 43 of the lock portion 4. When the distal end edge 43 moves away from the second part 22, the locking part 4 is separated from the electric wire 100, and the restriction (prevention of movement) of the electric wire 100 by the locking part 4 is released.
  • the guide protrusion 93 of the release member 9 is disposed at a position straddling the first locking piece 4A and the second locking piece 4B in the Z-axis direction.
  • the spring block 13 is inserted into the terminal block 12 from the opening 121 formed on the end surface (lower end surface in FIG. 3) on the insertion port 11 side in the Y-axis direction of the terminal block 12. That is, the spring block 13 is introduced into the accommodation space 50 inside the cylindrical body 120. At this time, the first protrusion 44A and the second protrusion 44B are fitted into the first recess 63A and the second recess 63B of the terminal block 12, respectively. If the spring block 13 is inserted into the terminal block 12 while bending the locking part 4 so that the first locking piece 4A and the second locking piece 4B approach each other through the slit 45, each projection 44 Can be prevented from coming into contact with the inner surface 60 of the side wall portion 6 and being damaged.
  • the support portion 7 has a curved portion 722 that is curved in an arc shape with a predetermined radius of curvature when viewed along the Z-axis direction. Therefore, by inserting the spring block 13 into the terminal block 12 from the opening 121 with the bending portion 722 facing the positive side of the Y-axis, the bending portion 722 is moved to the third pressing piece 33 or the like of the pressing portion 3. Even if it contacts, it can suppress that the pressing part 3 is damaged.
  • the terminal block 12 and the spring block 13 are combined.
  • the spring block 13 and the terminal block 12 are combined and accommodated in the terminal chamber 80 of the case 8.
  • the release member 9 is attached to the case 8 so that both end portions of the shaft portion 91 are inserted into the bearing portion 83 of the case 8.
  • the spring block 13 may be inserted into the terminal block 12 from an opening 122 (see FIG. 3, an opening on the upper end surface in FIG. 3) opposite to the opening 121 in the Y-axis direction of the terminal block 12. .
  • each protrusion 44 is positioned in the vicinity of the connection portion between the extension portion 41 and the spring portion 42. Therefore, when inserted from the opening 122 on the upper end surface, the distance by which each projection 44 slides on the inner surface 60 of the side wall 6 becomes longer than when inserted from the opening 121 on the lower end surface.
  • the spring block 13 is preferably inserted from the opening 121 in order to prevent the protrusions 44 from coming into contact with the inner surface 60 of the side wall portion 6 and being damaged.
  • the step of combining the terminal block 12 and the spring block 13 may be performed in another place in advance.
  • the terminal block 12 and the spring block 13 after being combined are in a temporarily held state by the protrusions 44 and the recesses 63, they can be easily carried.
  • the assembly of the terminal device 1 can also be automated.
  • the terminal device 1 having the above-described configuration is used in a wiring device 10 as shown in FIG. 7, for example.
  • a wiring device 10 illustrated in FIG. 7 is a switch used by being attached to a wall of a building.
  • the wiring device 10 includes a rectangular parallelepiped device body 101 and a terminal device 1 housed in the device body 101.
  • a handle 102 is provided on the front surface of the instrument main body 101.
  • the wiring device 10 is configured such that the contact in the device main body 101 is switched on / off each time the handle 102 is pressed.
  • the wiring device 10 includes four terminal devices 1 configured as described above.
  • the four terminal devices 1 are housed in the instrument body 101 so that the insertion holes 81 are exposed on the rear surface of the instrument body 101, respectively.
  • the electric wire 100 can be connected by inserting the electric wire 100 from the rear surface side of the device main body 101.
  • the four terminal devices 1 are arranged at both ends in the X-axis direction of the instrument body 101 as a set of two terminal devices 1 so as to be aligned in the Z-axis direction. Therefore, a total of eight insertion holes 81 are formed on the rear surface of the instrument body 101 so that four are arranged in the Z-axis direction and two in the X-axis direction.
  • the dimensions of the instrument body 101 are often determined by the standards of each country, such as “one module dimension”.
  • the dimensions of the instrument body 101 are often determined by the standards of each country, such as “one module dimension”.
  • the terminal device 1 according to the present embodiment is particularly suitable for such a wiring device 10 because it is configured to easily reduce the dimension in the Z-axis direction.
  • the case 8 (see FIG. 3) of the terminal device 1 may be a separate body from the device body of the device body 101 or may be a part of the device body of the device body 101. Further, the release member 9 (see FIGS. 6A and 6B) is held by the body of the instrument body 101 or the case 8 so that at least a part of the operation unit 92 is exposed from the body of the instrument body 101.
  • the first modification is different from the basic example in that the support part 200 is separate from the lock part 4.
  • the spring block 13 of the first modified example includes an extension piece 201 instead of including the support portion 7 of the basic example, and the support portion 200 is separated from the spring block 13 independently. It is a member.
  • the constituent elements other than the support portion 200 and the extension piece 201 are the same as those of the terminal device 1 of the basic example, and thus the description of the same constituent elements is omitted.
  • the number of support portions 200 is two as an example. That is, the terminal device 1 includes a pair of support parts 200. One of the pair of support portions 200 is disposed so as to cover the first terminal portion 2A, the first pressing portion 3A, and the first connecting portion 30A from the positive side of the Y axis. Further, the other of the pair of support portions 200 is disposed so as to cover the second terminal portion 2B, the second pressing portion 3B, and the second connecting portion 30B from the positive side of the Y axis.
  • the pair of support portions 200 adopts a configuration that is plane-symmetric in the Z-axis direction in which they are arranged. Therefore, hereinafter, only the support portion 200 disposed with respect to the first terminal portion 2A, the first pressing portion 3A, and the first connecting portion 30A illustrated in FIG. 8A will be described.
  • the support portion 200 has a substantially rectangular plate shape that is curved in a substantially U shape (when viewed along the Z-axis direction) as a whole.
  • the support part 200 is formed, for example, by bending one metal plate.
  • the support part 200 is made of stainless steel (SUS), for example.
  • the support part 200 includes a first flat plate part 2001, a second flat plate part 2002, and a bending part 2003.
  • the first flat plate portion 2001, the second flat plate portion 2002, and the bending portion 2003 are integrally formed.
  • the curved portion 2003 is a member that connects the first flat plate portion 2001 and the second flat plate portion 2002.
  • the first flat plate portion 2001 has a flat plate shape.
  • the thickness direction of the first flat plate portion 2001 substantially coincides with the X-axis direction.
  • the first flat plate portion 2001 is in contact with the first pressing piece 31 of the first pressing portion 3A in the X-axis direction in a state where the electric wire 100 is not inserted into the first pressing portion 3A.
  • the mutually opposing surfaces are in surface contact.
  • the thickness dimension in the X-axis direction of the first flat plate portion 2001 is smaller than the thickness dimension in the X-axis direction of the first pressing piece 31.
  • the second flat plate portion 2002 has a flat plate shape.
  • the dimension in the Y-axis direction of the second flat plate portion 2002 is larger than the dimension in the Y-axis direction of the first flat plate portion 2001, and is substantially the same as the dimension in the Y-axis direction of the first terminal portion 2A.
  • these dimensional relationships are not particularly limited.
  • the dimension of the second flat plate part 2002 in the Y-axis direction may be substantially the same as the dimension of the first flat plate part 2001 in the Y-axis direction.
  • the thickness direction of the second flat plate portion 2002 substantially coincides with the X-axis direction.
  • the second flat plate portion 2002 is in contact with the first terminal portion 2A in the X-axis direction.
  • the surfaces of the second flat plate portion 2002 and the first terminal portion 2A that face each other are in surface contact with each other.
  • the 2nd flat plate part 2002 it is preferable that one surface which contacts the surface of the 1st terminal part 2A is parallel to the said surface of the 1st terminal part 2A.
  • the thickness dimension in the X-axis direction of the second flat plate portion 2002 is smaller than the thickness dimension in the X-axis direction of the first terminal portion 2A.
  • the curved portion 2003 is curved so as to protrude from one end (the upper end in FIG. 8A) of the first flat plate portion 2001 to the opposite side to the insertion port 11 in the Y-axis direction (in a direction away from the insertion port 11).
  • Two flat plate portions 2002 are connected to one end (the upper end in FIG. 8A).
  • the curved portion 2003 is curved in an arc shape with a predetermined radius of curvature when viewed along the Z-axis direction.
  • the inner diameter of the curved portion 2003 substantially coincides with the distance between the first flat plate portion 2001 and the second flat plate portion 2002.
  • FIG. 8A The curved portion 2003 is curved so as to protrude from one end (the upper end in FIG. 8A) of the first flat plate portion 2001 to the opposite side to the insertion port 11 in the Y-axis direction (in a direction away from the insertion port 11).
  • Two flat plate portions 2002 are connected to one end (the upper end in FIG. 8A).
  • the surfaces where the curved part 2003 and the 1st connection part 30A oppose each other are in surface contact.
  • the inner diameter of the curved portion 2003 is substantially the same as the outer diameter of the first connecting portion 30A.
  • the thickness dimension of the curved portion 2003 in the Y-axis direction is smaller than the thickness dimension of the first connecting portion 30A in the Y-axis direction.
  • the support unit 200 configured as described above has a first terminal portion 2A, a first pressing portion 3A, and a first pressing portion in a space surrounded by the first flat plate portion 2001, the second flat plate portion 2002, and the bending portion 2003.
  • the connecting portion 30 ⁇ / b> A is fitted into the terminal block 12.
  • the curved portion 2003 of the support portion 200 is preferably in contact with a cover of the case 8 that closes the opening surface of the terminal chamber 80, for example. .
  • the dimension in the Y-axis direction of the first terminal portion 2A is smaller than that of the first terminal portion 2A of the basic example.
  • the dimensional relationship is defined in
  • the support portion 200 is attached to the first terminal portion 2A, the first pressing portion 3A, and the first connecting portion 30A, and further positioned by contacting the cover of the case 8.
  • the support unit 200 may be coupled to the first pressing unit 300 by caulking, welding, crimping, or the like.
  • the support part 200 according to the first modification has an elastic force toward the terminal part 2 with respect to the pressing part 3 when the electric wire 100 is inserted into the terminal device 1, similarly to the support part 7 according to the basic example. Can act. Therefore, even if the electric wire 100 is repeatedly inserted and removed, for example, a decrease in contact pressure between the terminal portion 2 and the electric wire 100 can be suppressed as compared with the case where the support portion 200 is not provided.
  • the spring block 13 of the first modification includes an extension piece 201 instead of the support portion 7 of the basic example. That is, the spring block 13 includes the locking part 4 and the extension piece 201.
  • the extension piece 201 has a rectangular plate shape and is substantially parallel to one surface 20 of the two terminal portions 2.
  • the locking part 4 and the extension piece 201 are integrally formed.
  • the end of the extension piece 201 on the insertion port 11 side in the Y-axis direction is connected to the extension part 41 of the first locking piece 4A and the extension part 41 of the second locking piece 4B.
  • the extension piece 201 is in contact with the inner side surface 51 of the facing portion 5.
  • the extension piece 201 extends along the Y-axis direction so that the end surface 201 ⁇ / b> A opposite to the locking piece in the Y-axis direction is substantially flush with the upper end surface of the facing portion 5.
  • the end surface 201 ⁇ / b> A of the extension piece 201 is preferably defined in a dimensional relationship so as to come into contact with the cover of the case 8 in a state where the terminal block 12 and the spring block 13 are housed in the case 8.
  • (3.2) Second Modification A second modification will be described with reference to FIG. 8B.
  • the second modification is different from the basic example in that the dimension of the spring block 13 in the Y-axis direction is smaller than that of the basic spring block 13.
  • the spring block 13 of the second modified example includes a support portion 210 instead of the support portion 7 of the basic example.
  • the dimension in the Y-axis direction of each lock piece of the second modification is smaller than each lock piece of the basic example.
  • the constituent elements other than the support portion 210 and the locking portion 4 of the spring block 13 are the same as those of the terminal device 1 of the basic example, and thus the description of the same constituent elements is omitted.
  • the support part 210 includes a base part 211 and a pair of support pieces 212.
  • the pair of support pieces 212 adopts a configuration that is plane-symmetric in the Z-axis direction in which they are arranged, like the support pieces 72A and 72B of the basic example. Therefore, hereinafter, only one support piece 212 facing the first pressing portion 3A illustrated in FIG. 8B will be described, and description of the other support piece 212 facing the second pressing portion 3B will be omitted. To do.
  • the base portion 211 has a rectangular plate shape and is substantially parallel to one surface 20 of the two terminal portions 2.
  • the end of the base 211 on the side of the insertion slot 11 in the Y-axis direction is connected to the extension 41 of the first locking piece 4A and the extension 41 of the second locking piece 4B.
  • the ends of the base 211 opposite to the two locking pieces in the Y-axis direction are connected to the pair of support pieces 212.
  • the base portion 211 is in contact with the inner surface 51 of the facing portion 5.
  • the dimension in the Y-axis direction of the base 211 is smaller than the base 71 (see FIG. 1B) of the basic example.
  • the dimension in the Y-axis direction of each lock piece of the second modification is also smaller than each lock piece (see FIG. 1B) of the basic example.
  • the support piece 212 has a flat plate portion 2121 and a curved portion 2122.
  • the flat plate portion 2121 has the same shape and the same dimensions as the flat plate portion 721 (see FIG. 1B) of the basic example, for example.
  • the bending portion 2122 has the same shape and the same size as the bending portion 722 (see FIG. 1B) of the basic example, for example.
  • the flat plate portion 2121 is in contact with the first pressing piece 31 of the first pressing portion 3A, instead of the tip edge of the third pressing piece 33 of the first pressing portion 3A. 330 is contacted.
  • the flat plate portion 2121 is in contact with the tip edge 330 even when the electric wire 100 is not inserted into the terminal device 1.
  • the flat plate portion 2121 is in a non-contact state with the tip edge 330, and when the electric wire 100 is inserted and the first pressing portion 3A bends in the negative direction of the X axis.
  • the dimensional relationship may be defined so as to be in contact with the tip edge 330. In short, there may be a slight gap between the flat plate portion 2121 and the tip edge 330.
  • the support portion 210 configured in this way has an elastic force more effectively toward the terminal portion 2 side with respect to the pressing portion 3 when the electric wire 100 is inserted into the terminal device 1.
  • the first pressing portion 3 ⁇ / b> A bends in the negative direction of the X axis with the bending portion 301 as a fulcrum. Therefore, in order to more effectively suppress plastic deformation of the first pressing portion 3A in the negative direction of the X axis, the flat plate portion 2121 is as far away from the curved portion 301 of the first pressing portion 3A as possible. It can be said that it is desirable that the edge 330 is in contact with the first pressing portion 3A.
  • the dimension of the spring block 13 in the Y-axis direction is smaller than that in the basic example. Therefore, when the terminal block 12 and the spring block 13 are stored in the case 8 (see FIG. 3), a gap is formed between the curved portion 2122 of the support portion 210 and the cover of the case 8. In short, the spring block 13 is not in contact with the cover of the case 8, and there is a possibility that stable positioning of the spring block 13 in the accommodation space 50 may not be obtained. Therefore, in order to obtain stable positioning of the spring block 13, another member that fills the gap may be provided between the spring block 13 and the cover of the case 8.
  • Each flat plate portion 721 of the support portion 7 is not only in contact with the first pressing piece 31 of the pressing portion 3 but also in the Y-axis direction so as to be in contact with the tip edge 330 (see FIG. 8B) of the third pressing piece 33.
  • the dimension in may be set long.
  • the dimension of each flat plate part 721 in the Y-axis direction may be substantially the same as the dimension of the pressing part 3 in the Y-axis direction. In this case, the plastic deformation of the pressing portion 3 in the negative direction of the X axis can be more effectively suppressed.
  • the terminal device 1 may include a wire spring instead of the support portion 7 as a member that applies an elastic force to the pressing portion 3 toward the terminal portion 2 side (positive direction of the X axis).
  • the wire spring may be provided so as to be wound around the pressing portion 3 and the terminal portion 2.
  • the protrusion 44 and the recess 63 are provided, but these are not essential components for the terminal device 1. That is, the lock part 4 may not have the protrusion 44. Further, the side wall portion 6 may not have the concave portion 63.
  • each protrusion 44 is provided on one end side (the lower end side in FIG. 1B) of the extension portion 41.
  • the center or the other end side in the Y-axis direction of the extension portion 41 (the upper end side in FIG. 1B), etc. May be provided.
  • each protrusion 44 is provided. Is preferably formed as close to one end of the extension 41 as possible as in the basic example.
  • the terminal device 1 includes the pressing unit 3 and the connecting unit 30, but these are not essential components for the terminal device 1.
  • the terminal device 1 may not include the pressing unit 3 and the connecting unit 30.
  • the terminal device 1 may not include the support portion 7.
  • it is preferable that the extension part 41 of the lock part 4 is extended so that one end on the opposite side to the opening 121 in the Y-axis direction is in contact with the case 8.
  • lock portion 4 and the support portion 7 are integrally formed, but may be separate from each other.
  • the lock part 4 and the support part 7 that are configured separately may be coupled by, for example, caulking, welding, or pressure bonding.
  • the terminal device 1 includes the two side wall parts 6 (the first side wall part 6A and the second side wall part 6B).
  • the present invention is not limited to this configuration. Only one of the part 6A and the second side wall part 6B may be provided.
  • the cylindrical body 120 is not cylindrical and is substantially C-shaped when viewed from one side in the Y-axis direction.
  • the locking part 4 has the protrusion 44 only in the locking piece facing the said one side wall part 6.
  • at least a pair of side wall portions 6 are provided so as to sandwich the lock portion 4, and fit into the recesses 63 of each side wall portion 6.
  • the protrusions 44 are respectively provided on the side surfaces of the locking portion 4 that face the side wall portions 6. And it is preferable that the locking part 4 is supported with respect to each side wall part 6 when each protrusion 44 fits into the recessed part 63.
  • each terminal portion 2 is not limited to a flat surface, and a plurality of irregularities may be formed on the one surface 20 by, for example, knurling.
  • the oxide film on the surface of the electric wire 100 can be removed by a plurality of irregularities every time the electric wire 100 is inserted into and removed from the terminal device 1.
  • the plurality of irregularities also function as a slip stopper for the electric wire 100 in the Y-axis direction.
  • the pressing unit 3 and the locking unit 4 are separate members, but the configuration is not limited to this, and the pressing unit 3 and the locking unit 4 may be integrated. Furthermore, the shape of the pressing portion 3 and the shape of the lock portion 4 are not limited to the shapes described in the basic example, and can be changed as appropriate.
  • terminal block 12 is not limited to the configuration formed by bending one metal plate, and may be formed by, for example, extrusion molding.
  • spring block 13 is not limited to a configuration formed by bending a single metal plate, and may be formed by, for example, extrusion molding.
  • the contact portion 34 is curved with a predetermined radius of curvature.
  • the contact portion 34 may be angular.
  • the first corner portion 61 and the second corner portion 62 of the terminal block 12 are not essential to the terminal device 1 to be curved with a predetermined radius of curvature, and may be angular, for example.
  • the curved portion 420 of the spring portion 42 and the curved portions 722 of the support portion 7 are not essential for the terminal device 1 to be curved with a predetermined radius of curvature, and may be angular, for example.
  • the connecting portion 30 may not have the bending portion 301.
  • the terminal block 12 only needs to have conductivity, and the material of the terminal block 12 is not limited to copper, for example, copper alloy such as brass, tin (Sn) bronze, or phosphorus (P) bronze. Also good.
  • the spring block 13 only needs to have elasticity, and the material of the spring block 13 is not limited to stainless steel, and may be, for example, iron (Fe) or a copper alloy.
  • the terminal block 12 (pressing portion 3) and the spring block 13 (locking portion 4) may be made of the same material.
  • the terminal device 1 is not limited to a two-pole type terminal device that can connect up to two electric wires 100, but can be connected to, for example, a three-pole type that can connect three electric wires 100, or four electric wires 100.
  • a terminal device capable of connecting three or more electric wires 100 such as a four-pole type may be used.
  • the pressing portion 3, the locking pieces of the locking portion 4, and the connecting portions 30 are provided as many as the number of poles. That is, in the three-pole terminal device 1, it is preferable that the pressing portion 3, the locking pieces of the locking portion 4, and the connecting portions 30 are provided three by three.
  • the release member 9 is operated only when the electric wire 100 is removed, but may be operated when the electric wire 100 is inserted. That is, when the operator connects the electric wire 100 to the terminal device 1, the operator operates the release member 9 to displace the distal end edge 43 of the lock portion 4 away from the one surface 20 of the terminal portion 2.
  • the electric wire 100 may be inserted.
  • the release member 9 may be directly operated by an operator, or may be operated using a jig such as a driver.
  • the terminal device 1 includes the terminal portion 2, the pressing portion 3, the locking portion 4, and the support portion (7, 200, 210).
  • the pressing portion 3 is disposed so as to face the one surface 20 of the terminal portion 2, and sandwiches the electric wire 100 inserted along the insertion direction from the insertion port 11 between the terminal portion 2.
  • the locking part 4 is disposed so as to face the one surface 20 of the terminal part 2 and contacts the electric wire 100 to restrict the movement of the electric wire 100 toward the insertion port 11.
  • the support part (7, 200, 210) supports the pressing part 3.
  • the terminal part 2 and the pressing part 3 are integrally formed.
  • the support portions (7, 200, 210) support the pressing portion 3 by pressing the pressing portion 3 toward the terminal portion 2 side.
  • the terminal device 1 includes the support portion (7, 200, 210) that supports the pressing portion 3 by generating an elastic force that presses the pressing portion 3 toward the terminal portion 2 side. Therefore, the force which pushes the electric wire 100 to the terminal part 2 side is heightened compared with the case where the support part (7, 200, 210) is not provided.
  • the pressing portion 3 may be plastically deformed in a direction away from the terminal portion 2 due to metal fatigue or the like.
  • the pressing force of the pressing portion 3 alone weakens the force that pushes the electric wire 100 toward the terminal portion 2, and the contact pressure between the terminal portion 2 and the electric wire 100 is reduced. There was a decline.
  • the terminal device 1 since the terminal device 1 includes the support portions (7, 200, 210), it is possible to suppress a decrease in contact pressure. As a result, a decrease in connection reliability can be suppressed.
  • the lock part 4 and the support part (7, 210) are integrally formed. According to this configuration, although it is a single member, it has a function of restricting the movement of the electric wire 100 and a function of suppressing a decrease in contact pressure between the terminal portion 2 and the electric wire 100. Therefore, the number of members can be reduced. Furthermore, for example, when the electric wire 100 is pulled out, the locking portion 4 receives a moment from the electric wire 100, and a part of the locking portion 4 tries to rotate in a direction away from the facing portion 5. However, the rotation can also be suppressed by the support portions (7, 210) formed integrally with the lock portion 4 coming into contact with the opposing pressing portion 3.
  • the support portion (7, 210) is disposed so as to face the one surface 20 of the terminal portion 2 through the pressing portion 3. It is preferable that According to this configuration, the support portion (7, 210) can apply an elastic force to the pressing portion 3 while suppressing the occurrence of a phenomenon such as contact with the inserted electric wire 100. That is, it is possible to provide a structure that does not obstruct the insertion work of the electric wire 100.
  • the terminal device 1 according to the fourth aspect further includes the facing part 5 and the side wall part 6 in the third aspect.
  • the facing portion 5 is disposed so as to face the one surface 20 of the terminal portion 2, and forms an accommodating space 50 in which the pressing portion 3 and the locking portion 4 are accommodated between the facing portion 5.
  • the side wall portion 6 connects the terminal portion 2 and the facing portion 5. According to this configuration, the pressing portion 3 and the locking portion 4 can be easily positioned with respect to the terminal portion 2.
  • the locking part 4 and the pressing part 3 are composed of separate members.
  • the curved part (722,2122) is comprised so that the end of the flat plate part (721,2121) and base part (71,211) on the opposite side to the insertion port 11 in the said insertion direction may be connected.
  • the support portion (7, 210) supports the pressing portion 3 by pressing the pressing portion 3 when the second surface (724) of the flat plate portion (721, 2121) is in contact with the pressing portion 3.
  • the support portion (7, 210) can apply an elastic force to the pressing portion 3 toward the terminal portion 2 side through the bending of the bending portion (722, 2122). Further, the support portions (7, 210) can make more stable contact with the pressing portion 3 through the flat plate portions (721, 2121).
  • the wiring device 10 includes the terminal device 1 according to any one of the first to sixth modes, and a device body 101 that houses the terminal device 1. According to this configuration, it is possible to provide the wiring device 10 including the terminal device 1 that can suppress a decrease in connection reliability.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

L'objectif de la présente invention est de fournir un dispositif de borne et un appareil de câblage équipé de ce dernier grâce auxquels une diminution de la fiabilité de connexion pourra être réduite ou évitée. Le dispositif de borne (1) est pourvu d'une partie de borne (2), d'une partie de pression (3), d'une partie de verrouillage (4) et d'une partie de support (7). La partie de pression (3) est disposée à l'opposé d'une surface (20) de la partie de borne (2), de telle sorte qu'un fil électrique (100) inséré par une ouverture d'insertion (11) dans une direction d'insertion peut être intercalé entre la partie de pression (3) et la partie de borne (2). La partie de verrouillage (4) est disposée à l'opposé de la première surface (20) de la partie de borne (2) de manière à entrer en contact avec le fil électrique (100) et à réguler le mouvement du fil électrique (100) vers l'ouverture d'insertion (11). La partie de support (7) soutient la partie de pression (3). La partie de borne (2) et la partie de pression (3) sont formées en une seule pièce. La partie de support (7) soutient la partie de pression (3) en pressant la partie de pression (3) vers la partie de borne (2).
PCT/JP2017/037774 2016-10-19 2017-10-19 Dispositif de borne et appareil de câblage équipé de ce dernier WO2018074537A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016205395A JP2018067461A (ja) 2016-10-19 2016-10-19 端子装置及びそれを備えた配線器具
JP2016-205395 2016-10-19

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Publication Number Publication Date
WO2018074537A1 true WO2018074537A1 (fr) 2018-04-26

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JP2021106106A (ja) * 2019-12-26 2021-07-26 三和電気工業株式会社 電線差し込みコネクタプラグ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5412981U (fr) * 1977-06-30 1979-01-27
JPS54121284U (fr) * 1978-02-15 1979-08-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5412981U (fr) * 1977-06-30 1979-01-27
JPS54121284U (fr) * 1978-02-15 1979-08-24

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