JP2011120430A - Wiring insulated board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a newly structured wiring insulated board capable of stably holding an electric wire in an insulation displacement state to a base end of a terminal, irrespective of the structure of an another member such as a lower case. <P>SOLUTION: The wiring insulated board 10 in which an electric wire 70 is fitted to an insulation displacement part 58 of an insulation displacement terminal 56 and energized has the following structures. (i) An opposite side edge 71 of each branched part 59 of the insulation displacement part 58 is exposed from each supporting protrusion 60, and the electric wire 70 is fitted to the opposite side edge 71 of each branched part 59 and energized. (ii) Regulating protrusions 76 are formed on the opposite surfaces of a pair of supporting protrusions 60, 60, respectively, the regulating protrusions 76 are fitted to the insulation displacement part 58 and positioned closer to the front end sides of the pair of supporting protrusions 60, 60 than to the electric wire 70 arranged between the opposite surfaces of the pair of supporting protrusions 60, 60, and the dimension of a gap between the protruding front end surfaces of the regulating protrusions 76 formed on the opposite surfaces of the pair of supporting protrusions 60, 60, respectively, is smaller than the outer dimension of the electric wire 70. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wiring insulating plate constituting an electrical connection box mounted on an automobile or the like.

  Conventionally, an electric junction box mounted on an automobile supports an electric wire such as a coated single core wire arranged along a predetermined route and a plurality of press contact terminals electrically connected to the electric wire. A wiring insulation board is used. Such a wiring insulating plate is provided with a pair of support protrusions having terminal mounting holes into which the press contact portions of the press contact terminals branched in a bifurcated manner are press-fitted, and between the pair of support protrusions. An electric wire arranged on the insulating plate is fitted into the insulation plate and is electrically connected to the press contact portion.

  By the way, the electric wire sandwiched between the pair of supporting projections may come out from between the pair of supporting projections due to an external force such as a vibration applied after the manufacturing process after pressing or mounting on the automobile. Ensuring terminal connection reliability has been a problem. Therefore, conventionally, as shown in Japanese Patent Application Laid-Open No. 10-145943 (Patent Document 1) and the like, a pressing that protrudes toward the wiring insulating plate against the lower case or the like superimposed on the wiring insulating plate A structure has been employed in which protrusions are formed and the pressing protrusions are inserted between a pair of support protrusions to hold down the electric wires, thereby preventing the wires from coming off.

  However, if such a pressing protrusion is formed on the lower case, the structure of the lower case becomes complicated and it becomes difficult to form, or the design change of the lower case is required due to the design change of the wiring insulating plate, which is costly. There were problems such as bulkiness.

Japanese Patent Laid-Open No. 10-145943

  The present invention has been made in the background of the above-mentioned circumstances, and the solution to the problem is to stably hold the electric wire in the pressure contact state with the base end portion of the terminal regardless of the structure of another member such as a lower case. An object of the present invention is to provide a wiring insulating board having a novel structure that can be made.

  That is, according to the first aspect of the present invention, a pair of support protrusions including a terminal mounting groove in which a press contact terminal having a press contact portion branched in a bifurcated shape is press-fitted and formed, and an electric wire is routed. In the wiring insulating plate in which the electric wire is inserted into the press contact portion of the press contact terminal and is conducted, the opposing edge portions of the branch portions of the press contact portion are respectively connected to the pair of support protrusions. It is exposed from the support protrusions, and the electric wires are inserted into the opposing edge portions of the branch portions and are conducted therewith, while the restriction protrusions are provided on the opposing surfaces of the pair of support protrusions, respectively. The regulating projections are positioned on the distal ends of the pair of support projections with respect to the electric wires disposed between the opposing surfaces of the pair of support projections by being fitted into the pressure contact portions, and The regulation provided on the opposing surface of the support protrusion Gap size between the projecting distal end face of the projection, is smaller than the outer diameter of the electric wire, and wherein.

  According to the wiring insulating plate having the structure according to the first aspect of the present invention, the restricting projection is formed on the support protrusion provided on the wiring insulating plate, and the electric wire is lifted by the restricting protrusion. Is to be prevented. Therefore, even when the vibration is input after the electric wire is arranged on the wiring insulating plate, the electric wire and the press contact terminal are maintained in a correct connection state.

  Further, it is not necessary to provide a protrusion (backup) for preventing the electric wire from floating on other members such as a case superimposed on the wiring insulating plate, and the shape of the case can be a simple box shape, for example. Therefore, the structure of the case can be simplified, and the case having the same structure can be used even when the wiring or the terminal position is changed.

  According to a second aspect of the present invention, in the wiring insulating plate described in the first aspect, the restriction protrusion is fitted into the pressure contact portion and disposed between the opposing surfaces of the pair of support protrusions. It is made to oppose in the direction orthogonal to the said electric wire.

  According to the second aspect, by allowing the restricting protrusions to protrude from both sides of the electric wire in the width direction, both ends in the width direction of the electric wire can be suppressed by the restricting protrusions, and the removal of the electric wire is more effective. Is prevented.

  According to a third aspect of the present invention, in the wired insulating plate described in the first or second aspect, in the pair of support protrusions, the pair of restricting protrusions are the opposing edges of the press contact terminal, respectively. It is formed on both sides of the part.

  According to the third aspect, pulling out the electric wire is advantageously prevented by restraining the electric wire with the restricting projection at at least two places in the length direction.

  According to a fourth aspect of the present invention, in the wired insulating plate described in any one of the first to third aspects, an end surface of the restriction protrusion positioned on a proximal end side of the pair of support protrusions is provided. The flat surfaces spread perpendicularly to the protruding direction of the pair of supporting protrusions.

  According to the fourth aspect, the end face on the electric wire side of the restricting protrusion is a flat surface that extends in a direction orthogonal to the direction in which the electric wire is pulled out. Can be prevented from spreading out.

  According to a fifth aspect of the present invention, in the wiring insulating plate described in any one of the first to fourth aspects, the pair of support protrusions has the pair of support protrusions rather than the pair of support protrusions. A positioning rib that protrudes in the opposing direction of the pair of support protrusions is provided on the base end side of the portion, and the protrusion height of the positioning rib is set to be smaller than the protrusion height of the restriction protrusion. .

  According to the fifth aspect, positioning in the width direction of the electric wire is realized by the positioning rib, and the electric wire is stably held at a predetermined position. As a result, the electric wire and the press contact terminal are maintained in the intended contact state.

  In the present invention, the restriction projections arranged on the outer side of the electric wire in the drawing direction are in contact with the electric wire, so that the electric wire is prevented from being lifted up or pulled out. Therefore, even when vibrations due to assembly work or running of an automobile are input after wiring is laid on the wiring insulation board, the connection state between the wire and the pressure contact terminal is provided without providing a special protrusion on the case side. Can be maintained normally.

The top view of the electrical-connection box provided with the wiring insulation board as one Embodiment of this invention. II-II sectional drawing of FIG. The bottom view which shows the state which removed the lower case in the electrical-connection box shown by FIG. The perspective view which shows the principal part of the wiring insulation board which comprises the electrical-connection box shown by FIG. The side view of the principal part of the wiring insulation board shown by FIG. It is sectional drawing of the principal part of the wiring insulation board shown by FIG. 5, Comprising: It is VI-VI sectional drawing of FIG. It is sectional drawing of the principal part of the wiring insulation board shown by FIG. 5, Comprising: It is VII-VII sectional drawing of FIG. The top view of the principal part of the wiring insulation board shown by FIG. IX-IX sectional drawing of FIG. Sectional drawing which expands and shows the principal part of FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show an electrical junction box 12 having a wiring insulating plate 10 as an embodiment according to the present invention. As shown in FIG. 2, the electrical junction box 12 has a structure in which a circuit body 18 is accommodated in a case constituted by an upper case 14 and a lower case 16. In the following description, the vertical direction means the vertical direction in FIG. 2 which is the thickness direction of the wiring insulation board 10 in principle.

  The upper case 14 is a substantially rectangular box-shaped member made of synthetic resin and opening downward, and a plurality of fuse mounting portions 20 and relay mounting portions 22 as electrical component mounting portions are provided on the outer peripheral portion of the upper surface thereof. Is provided. Each of the fuse mounting portion 20 and the relay mounting portion 22 is formed with a terminal insertion hole 24 that penetrates the upper bottom wall portion of the upper case 14 in the thickness direction.

  A plurality of connector peripheral wall portions 26 are provided on the upper surface of the upper case 14. The connector peripheral wall portion 26 has a cylindrical shape and is integrally formed with the upper case 14 so as to protrude upward. Further, a plurality of terminal insertion holes 28 are formed on the inner peripheral side of the connector peripheral wall portion 26 so as to penetrate the upper case 14 in the thickness direction.

  Further, a plurality of locking claws 30 are integrally provided on the outer peripheral portion of the upper case 14, and the upper case 14 and the lower case 16 are mutually connected by being locked with an outer peripheral edge portion of the lower case 16 described later. It is supposed to be fixed.

  On the other hand, the lower case 16 is made of a synthetic resin and is a substantially rectangular box-shaped member that opens upward, and has a locking portion 36 that protrudes from the lower end of the peripheral wall toward the outer peripheral side.

  Further, three attachment portions 38 are integrally formed on the outer peripheral edge portion of the lower case 16 which is substantially rectangular in plan view. Each mounting portion 38 protrudes outward from the outer peripheral edge of the lower case 16, and a fixing bolt (not shown) is inserted into a bolt hole 40 formed in the center portion and screwed to the vehicle side, The lower case 16 is fixed to the vehicle side.

  The upper case 14 and the lower case 16 are faced up and down so that their openings face each other, and the peripheral wall of the lower case 16 is fitted into the peripheral wall of the upper case 14, and the locking claw of the upper case 14 30 and the locking portion 36 of the lower case 16 are locked together. As a result, the upper case 14 and the lower case 16 are fixed so as to close each other's opening, and are separated from the outside between the opposing surfaces of the upper bottom wall portion of the upper case 14 and the bottom wall portion of the lower case 16. A storage space 42 is formed.

  The circuit body 18 is disposed in the accommodation space 42. The circuit body 18 includes a bus bar circuit body 43 and a wiring circuit body 45.

  The bus bar circuit body 43 has a bus bar insulating plate 44. The bus bar insulating plate 44 is a synthetic resin member having electrical insulation, and has a thin, substantially rectangular plate shape. Further, the bus bar 50 is overlaid on the upper surface of the bus bar insulating plate 44. The bus bar 50 is a plate-shaped metal fitting made of a metal material having excellent conductivity, such as a copper alloy, and extends substantially parallel to the upper surface of the bus bar insulating plate 44 and is superimposed on the bus bar insulating plate 44. In addition, a plurality of terminal portions 52 are integrally formed on the bus bar 50 and protrude upward at a substantially right angle with respect to the bus bar insulating plate 44. The bus bar 50 may be disposed on the lower surface of the bus bar insulating plate 44 or may be disposed on both upper and lower surfaces.

  On the other hand, the wiring circuit body 45 has a wiring insulating plate 10. Similarly to the bus bar insulating plate 44, the wiring insulating plate 10 is formed of a synthetic resin material having electrical insulation, and has a substantially rectangular plate shape that is thicker than the bus bar insulating plate 44. Also, as shown in FIG. 3, a cylindrical outer peripheral wall 53 is integrally formed on the outer peripheral edge of the wiring insulating plate 10 so as to protrude to both sides in the thickness direction over the entire periphery. A concave wiring region 54 surrounded by the outer peripheral wall 53 is formed on both sides of the wiring insulating plate 10 in the thickness direction. In addition, a plurality of guide protrusions 55 that protrude on both sides in the thickness direction are integrally formed on the wiring insulating plate 10.

  Further, as shown in FIGS. 1 and 2, a plurality of press contact terminals 56 are attached to the wiring insulating plate 10. The press contact terminal 56 is a plate-shaped metal fitting formed of a metal material having excellent conductivity, such as a copper alloy, and the tip end portion thereof is the wiring insulating plate 10 as shown in FIGS. The base end portion protrudes downward from the wiring insulating plate 10. Further, the base end portion of the press contact terminal 56 is a press contact portion 58 that branches into a bifurcated shape, and includes a pair of branch portions 59 and 59 that face each other in the width direction perpendicular to the protruding direction and the thickness direction.

  In addition, the edge portions 61 on the outer sides in the opposing direction of the branch portions 59 are tapered so as to approach each other downward, and a step is formed in an intermediate portion of the outer edge portions 61, so that each branch A lower end portion of the portion 59 is a return portion 63 that prevents the press contact terminal 56 from being pulled upward. In addition, a positioning projection 65 that projects outward in the width direction (opposite direction of the pair of branch portions 59, 59) is integrally formed at an intermediate portion of the press contact terminal 56, and the projection 65 is a press-fit support described later. By contacting the opening of the portion 66, the press contact terminal 56 is positioned in the axial direction with respect to the wiring insulating plate 10.

  The press contact terminal 56 having such a structure is attached to a terminal mounting portion 67 protruding on both sides in the thickness direction of the wiring insulating plate 10. The terminal mounting portion 67 has a press-fit support portion 66 that protrudes upward, and a support protrusion 60 that protrudes downward.

  The press-fit support portion 66 has a substantially rectangular cross section that is larger than the cross-sectional shape of the press contact terminal 56, and the protruding tip portion is tapered. On the other hand, the support protrusions 60 are integrally formed with the wiring insulation plate 10, and a plurality of pairs of support protrusions 60, 60 facing each other are provided to protrude from the wiring insulation plate 10. Moreover, in a pair of support protrusions 60 and 60, those opposing surfaces are flat surfaces that extend substantially parallel to each other. Further, the projecting tip surface of the support projection 60 is located on substantially the same plane as the projecting tip surfaces of the outer peripheral wall 53 and the guide projection 55. In addition, a portion of the wiring insulating plate 10 positioned between the pair of support protrusions 60 and 60 is an electric wire support portion 68 that protrudes downward with a protrusion height smaller than that of the support protrusion 60.

  Further, a terminal mounting area 69 penetrating the wiring insulating plate 10 in the vertical direction is formed in the central portion of the terminal mounting portion 67. The terminal mounting area 69 includes a terminal mounting hole 64 that vertically penetrates the central portion of the press-fit support portion 66, and a terminal mounting groove that opens on the inner surface in the opposing direction of the pair of support protrusions 60 and 60 and extends linearly in the vertical direction 62, and is a space having a shape corresponding to the press contact terminal 56. The terminal mounting groove 62 has an upper end communicating with the terminal mounting hole 64 and a lower end formed with a length that does not reach the protruding front end surface of the support protrusion 60.

  The press contact terminal 56 is press-fitted and fixed to the terminal mounting region 69 in a direction in which the thickness direction is substantially orthogonal to the opposing direction of the pair of support protrusions 60, 60. More specifically, an intermediate portion of the press contact terminal 56 is press-fitted into the terminal mounting hole 64, and each branch portion 59 of the bifurcated press contact portion 58 is press-fitted into the terminal mounting groove 62 at the outer edge in the opposite direction. Thus, the press contact terminal 56 is fixed to the wiring insulating plate 10. Further, the opposing edge portion 71 on the inner side in the opposing direction of each branch portion 59 protrudes inward in the opposing direction from the opening of the terminal mounting groove 62. Note that the pressure contact portion 58 extends below a wire arrangement region 84 described later, and a lower end outer edge portion of the pressure contact portion 58 in a projection in the length direction of the coated single core wire 70 described later is a regulation protrusion 76 described later. And the inner edge portion of the lower end protrudes inward from the restricting protrusion 76. Further, the return portion 63 provided at the lower end portion of the press contact portion 58 is locked to the bottom surface of the terminal mounting groove 62, so that the press contact terminal 56 is prevented from coming off upward. Further, a gap is formed between the outer side edge 61 of the branch part 59 and the bottom surface of the terminal mounting groove 62, and minute elastic deformation of the branch part 59 outward in the width direction is allowed.

  A covered single core wire 70 as an electric wire is wired in the wiring region 54 formed on the wiring insulating plate 10 constituting the circuit body 18. The coated single core wire 70 is an electric wire in which an outer peripheral surface of a core material 72 formed of a conductive metal material such as copper is covered with an insulating coating material 74 formed of an insulator such as soft polyvinyl chloride. It is wired on the insulating plate 10. As shown in FIGS. 5 to 10, the coated single core wire 70 is fitted into the pressure contact portion 58 of the pressure contact terminal 56, so that the insulating coating material 74 is partially formed by the opposing edge portion 71 of each branch portion 59. And is electrically connected to the press contact terminal 56. As a result, the pressure contact terminals 56 and the pressure contact terminals 56 and external electrical components and the like are electrically connected via the coated single core wire 70. In the drawing, only a part of the coated single core wire 70 is shown, and the entire illustration is omitted.

  The bus bar insulating plate 44 is superimposed on the wiring insulating plate 10 from above in the plate thickness direction, whereby the circuit body 18 is formed. The bus bar insulating plate 44 is partially overlapped with the wiring insulating plate 10, and some of the press contact terminals 56 protruding from the wiring insulating plate 10 are formed on the bus bar insulating plate 44. It protrudes above the bus bar insulating plate 44 through an insertion hole (not shown).

  In the circuit body 18 having such a structure, the upper case 14 is overlapped from the front surface side which is the protruding tip end side of the press contact terminal 56 and the lower case 16 is overlapped from the back side which is the base end side of the press contact terminal 56. As a result, it is sandwiched between the upper case 14 and the lower case 16 and accommodated in the accommodating space 42. Also, some of the terminal portions 52 and the press contact terminals 56 of the bus bar 50 are inserted into the terminal insertion holes 24 formed in the upper case 14 and exposed to the outside, and the other several are formed in the upper case 14. The upper case 14 passes through the terminal insertion hole 28 and protrudes to the outside. As a result, a connection connector for connecting the mounting portion of the fuse and the relay and the external electric wire is formed.

  Further, the circuit body 18 is positioned and supported in the thickness direction by the outer peripheral portion thereof and the portion where the guide protrusion 55 is formed being in contact with the upper case 14 and the lower case 16. Further, the circuit body 18 is positioned in a direction substantially parallel to the surface because the outer peripheral portion thereof is in contact with the upper case 14.

  Further, the wiring insulating plate 10 constituting the circuit body 18 is provided with a mechanism for holding the coated single core wire 70 in a predetermined position. That is, as shown in FIGS. 4 to 10, a restriction protrusion 76 and a positioning rib 78 that restrict the displacement of the coated single core wire 70 are formed on the support protrusion 60 of the wiring insulating plate 10.

  The restricting protrusion 76 is a protrusion provided on the opposing surfaces of the pair of support protrusions 60, 60 that are opposed to each other, and is integrally formed so as to protrude inward in the opposing direction of the pair of support protrusions 60, 60 Has been. Further, the restricting protrusion 76 linearly extends downward from the intermediate portion of the supporting protrusion 60 in the protruding direction.

  Further, at least the lower end portion of the restricting projection 76 has a tapered shape in which the protruding height gradually decreases downward, and the protruding tip surface in the portion is inclined with respect to the protruding tip surface in the other portion. 80. The restricting protrusion 76 extends vertically at a substantially constant protruding height at a portion off the guide surface 80.

  Furthermore, the upper end surface of the restricting protrusion 76 is a substantially flat contact holding surface 82. The contact holding surface 82 is spaced below the portion of the wiring insulation plate 10 that supports the coated single core wire 70, and the electric wire is between the contact holding surface 82 and the support portion of the coated single core wire 70. An arrangement region 84 is formed.

  Further, the contact holding surface 82 and the projecting tip surface of the restricting projection 76 form a corner 86 at the connecting portion, and the angle of the corner 86 shown in FIG. 10: θ is 0 ° <θ ≦. It is desirable that the angle is set in the range of 90 °. However, even if the corner 86 has an obtuse angle slightly larger than 90 °, there is no significant influence on the effect of preventing the covered single core wire 70 described later, and in this embodiment, the angle 86 of the corner 86 is approximately 90. Set to °.

  Further, two restricting protrusions 76 are formed on each support protrusion 60, and the pair of restricting protrusions 76, 76 formed on each support protrusion 60 are in the length direction of the coated single core wire 70 (in FIG. 7). , Left and right) are separated by a predetermined distance. Further, the pair of restricting protrusions 76, 76 formed on each support protrusion 60 are disposed on both sides of the covered single core wire 70 with the press contact portion to the press contact terminal 56 sandwiched in the length direction.

In addition, the restricting protrusions 76 formed on the pair of support protrusions 60 and 60 are disposed so as to face each other in the width direction of the coated single core wire 70. As a result, the distance between the protruding front end surfaces of the pair of opposing regulating protrusions 76 and 76 is narrowed compared to the distance between the pair of supporting protrusions 60 and 60. The distance d ₁ between the protruding tip surfaces of the restricting protrusion 76 at the part off the guide surface 80 is set to be smaller than the diameter R of the coated single core wire 70 and the core material 72 of the coated single core wire 70. Diameter: set larger than r. Further, the separation distance D at the lower end of the guide surface 80 of the pair of opposing regulation protrusions 76 is set to be larger than the diameter R of the coated single core wire 70.

  Further, a positioning rib 78 is formed on the support protrusion 60 above the restriction protrusion 76. The positioning rib 78 is a ridge that linearly extends in the up-down direction on the extension line of the restricting protrusion 76, and protrudes inward in the opposing direction of the pair of opposing support protrusions 60, 60. Further, the positioning rib 78 has a projecting height dimension and a width dimension smaller than those of the restricting projection 76.

The distance d ₂ between the protruding tip surfaces of the pair of positioning ribs 78, 78 facing each other in the width direction of the coated single core wire 70 is the distance between the protruding tip surfaces of the pair of regulating projections 76, 76 in the same direction. : Is set to be larger than d ₁ and the diameter of the coated single core wire 70 is set to be equal to or smaller than R.

  A covered single core wire 70 is inserted between the opposing surfaces of the pair of support protrusions 60, 60 integrally including the regulation protrusion 76 and the positioning rib 78. More specifically, the coated single core wire 70 is guided by the guide surface 80 of the restricting protrusion 76, and passes through between the pair of restricting protrusions 76, 76 from the protruding tip side of the pair of supporting protrusions 60, 60. It is inserted into the arrangement area 84. The coated single core wire 70 is sandwiched between the pair of positioning ribs 78 and 78 above the restricting protrusion 76 and positioned in the width direction.

  In the electric wire arrangement region 84, the separation distance between the contact holding surface 82 of the regulation protrusion 76 and the holding portion of the coated single core wire 70 in the wiring insulating plate 10 is set larger than the diameter of the coated single core wire 70. ing. Then, the coated single core wire 70 is inserted into the electric wire arrangement region 84 while being separated upward or in contact with the contact holding surface 82, and is pressed against the press contact terminal 56 in the electric wire arrangement region 84. Yes. As a result, even when the pressure contact of the coated single core wire 70 to the pressure contact terminal 56 varies in the vertical direction due to a manufacturing error or the like, the coated single core wire 70 is arranged in the electric wire arrangement region 84 above the restriction projection 76. It has come to be. In the present embodiment, as shown in FIG. 10, the coated single core wire 70 is disposed away from both the contact holding surface 82 and the holding portion of the wiring insulating plate 10, and the pressure contact In addition to the upward shift, the downward shift is allowed.

  In such a state of wiring to the wiring insulating plate 10, the covered single core wire 70 is prevented from coming off from the electric wire arrangement region 84 by the restriction protrusion 76. That is, when the vibration due to the assembling work performed after the wiring of the coated single core wire 70 or the vibration due to the traveling of the automobile is input, the coated single core wire 70 is in a relative pulling direction with respect to the support protrusion 60. When displaced, the coated single core wire 70 is pressed against the contact holding surface 82 of the restricting protrusion 76. As a result, the relative displacement of the coated single core wire 70 and the support protrusion 60 in the extraction direction is limited by the restricting protrusion 76, and the coated single core wire 70 can be prevented from coming out of the electric wire arrangement region 84. . As a result, the coated single core wire 70 and the press contact terminal 56 are held in the intended press contact state, and the electrical connection between the coated single core wire 70 and the press contact terminal 56 is stably maintained.

  Moreover, since the regulation protrusion 76 for preventing the coated single core wire 70 from coming off is provided on the wiring insulating plate 10, it is not necessary to provide the lower case 16 with a projection for pressing the coated single core wire 70 on the lower case 16. The shape of the lower case 16 can be simplified. As a result, excellent effects such as ease of manufacture of the lower case 16, weight reduction, and cost reduction can be obtained.

  Further, the restriction protrusions 76 provided on the pair of support protrusions 60, 60 are arranged to face each other in the width direction of the coated single core wire 70. As a result, both end portions in the width direction of the coated single core wire 70 are pressed against the abutment holding surfaces 82 of the restricting protrusions 76, and the removal of the coated single core wire 70 is effectively prevented.

  In addition, each support protrusion 60 is provided with two restricting protrusions 76 that are separated in the length direction of the coated single core wire 70. Therefore, the coated single core wire 70 is pressed by the restricting projections 76 at two locations in the length direction, and the removal of the coated single core wire 70 is more advantageously prevented.

  Furthermore, a corner 86 is formed at the intersection of the protruding tip surface of the restricting protrusion 76 and the contact holding surface 82. As a result, when the coated single core wire 70 is pressed against the abutment holding surface 82, the corner portion 86 stops the coated single core wire 70 without being guided between the opposing regulation protrusions 76, 76, and the coated single core wire 70. It is possible to prevent the distance between the projecting tip surfaces of the regulation projections 76 from being pushed and expanded by the entry of. In particular, by setting the angle 86 of the corner portion 86 to approximately 90 °, the contact holding surface 82 and the coated single core wire 70 are in stable contact with each other, and the coated single core wire 70 is more excellently disconnected. Is prevented.

  Further, since the positioning ribs 78 are formed so as to protrude on both sides of the coated single core wire 70 in the width direction, the coated single core wire 70 is disposed at a predetermined position in the width direction, and the coated single core wire 70 and the press contact terminal 56 are correct. The connection state is maintained. In addition, since the positioning ribs 78 are formed below the restricting projections 76, the coated single core wire 70 is positioned by the positioning ribs 78 at two locations in the length direction across the press contact portion of the coated single core wire 70. Yes. Therefore, the covered single core wire 70 is efficiently positioned at the press contact portion to the press contact terminal 56, and normal press contact between the press contact terminal 56 and the covered single core wire 70 is realized. In addition, by arranging the restricting protrusion 76 and the positioning rib 78 vertically, it is possible to efficiently secure a space for forming the restricting protrusion 76 and the positioning rib 78 in the length direction of the coated single core wire 70, and in the same direction. The increase in size of the support protrusion 60 can be prevented.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, one or more restricting protrusions 76 may be formed on the pair of support protrusions 60, 60, and may be provided only on one side of the press contact terminal 56 in the length direction of the coated single core wire 70. . Of course, it is also possible to form three or more restricting protrusions 76 on one of the support protrusions 60, and the covering single core wire 70 can be more securely prevented.

  Further, the restricting protrusions 76 formed on the pair of support protrusions 60 and 60 do not necessarily have to face each other in the width direction of the coated single core wire 70, for example, are shifted from each other in the length direction of the coated single core wire 70. It may be formed at a position. In such a case, the gap dimension between the protruding tip surfaces of the restricting protrusions 76 refers to the separation distance between the protruding tip surfaces of the restricting protrusions 76 in the width direction of the coated single core wire 70.

  Further, the abutment holding surface 82 of the restriction projection 76 may have a shape in which a corner is formed between the protruding tip surface of the restriction projection 76, and may be a flat surface that is substantially orthogonal to the direction in which the coated single core wire 70 is pulled out. Also, a deformed surface having a partial convex portion, a concave portion, a broken line, or the like may be employed. Further, by making the corner portion formed at the boundary between the contact holding surface 82 and the projecting tip surface of the regulation projection 76 an acute angle, it is possible to expect the effect of preventing the corner portion from biting into the insulating coating material 74. .

  Further, the restricting projection and the positioning rib can adopt a structure whose cross-sectional shape changes, and for example, the protruding height may be changed in the vertical direction.

  Further, the regulation protrusion 76 and the positioning rib 78 may be formed at positions shifted in the length direction of the coated single core wire 70 without being continuously formed in the vertical direction.

10: wire insulation board, 56: pressure contact terminal, 58: pressure contact portion, 59: branching portion, 60: support protrusion, 62: terminal mounting groove, 70: coated single core wire (electric wire), 71: opposite edge, 76: Restriction protrusion, 78: Positioning rib

Claims (5)

A pair of support protrusions having a terminal mounting groove in which a press-contact terminal having a bifurcated press-contact portion is press-fitted and fixed are formed, and an electric wire is routed, and the electric wire is connected to the press contact terminal In the wire insulation board that is inserted into the pressure contact portion and conducted,
In the pair of support protrusions, opposite edge portions of the branch portions of the pressure contact portion are exposed from the support protrusion portions, and the electric wires are fitted into the opposite edge portions of the branch portions to conduct. While being
Regulating protrusions are provided on the opposing surfaces of the pair of supporting protrusions, respectively, and the restricting protrusions are fitted into the press contact portions, and the electric wires are arranged between the opposing surfaces of the pair of supporting protrusions. Located on the tip side of the pair of support protrusions,
The wiring insulation board characterized by the gap dimension between the protrusion front-end | tip surfaces of the said control protrusion provided in the opposing surface of said pair of support protrusion part being smaller than the outer diameter of the said electric wire.   The wiring according to claim 1, wherein the regulating protrusion is fitted in the pressure contact portion and is opposed to the electric wire disposed between the opposed surfaces of the pair of supporting protrusions in a direction orthogonal to the electric wire. Insulating plate.   The wiring insulation board according to claim 1 or 2, wherein in the pair of support protrusions, the pair of restricting protrusions are formed on both sides of the opposing edge portion of the press contact terminal.   The wiring according to any one of claims 1 to 3, wherein an end surface of the restricting protrusion positioned on a base end side of the pair of supporting protrusions forms a corner at an intersection with the protruding tip surface. Insulating plate.   The pair of support protrusions are provided with positioning ribs protruding in a direction opposite to the pair of support protrusions on the base end side of the pair of support protrusions with respect to the restriction protrusions. The wiring insulation board according to any one of claims 1 to 4, wherein a height is set to be smaller than a protruding height of the restriction protrusion.

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