JP4287600B2 - Insulation board with board pressure contact connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an insulating substrate with a board pressure contact connector applied to an electrical junction box or the like.
[0002]
[Prior art]
With the increase in electrical components and other auxiliary equipment mounted on automobiles and the like, the circuit configuration becomes complicated, the number of contact terminals and the number of wires are increased, and the insulating substrate tends to be laminated. In this way, under the situation where the pressure contact terminals and the wires are densely packed, the efficiency is limited in the limited space on the board without causing the electric troubles due to the dense terminals and wires interfering with each other. It is important to configure the circuit well, and the circuit configuration is changed or improved.
[0003]
The electrical connection box is an assembly circuit body in which a basic circuit body in which a connection circuit, a branch circuit, and the like are configured is accommodated on a substrate. In general, a substrate on which a basic circuit body is configured is laminated. A bus bar, a circuit breaking fuse, a relay for relaying, and the like, each having a circuit body made of a conductive plate, are attached to the substrate. There is also a board in which a basic circuit body is configured by a plurality of electric wires and a press contact terminal group in order to change the circuit configuration and increase the degree of freedom of the wiring pattern.
[0004]
8 to 12 show a board pressure contact connector mounted on a board constituting a basic circuit body with a plurality of electric wires and a pressure contact terminal group. The illustrated board pressure contact connector 61 includes a plurality of electric wires 80 wired to the insulating substrate 52, a plurality of bent pressure contact terminals 71 connecting the electric wires 80, and a connector for mounting the pressure contact terminals 71 along the board portion 63. The housing 62 is constituted. As the electric wire 80, a covered electric wire in which the periphery of the core wire is covered with an insulating outer skin is used.
[0005]
The press contact terminal 71 is a bent terminal that bends into an L shape or an inverted L shape (see FIG. 12 and the like). An electric contact portion 72 is formed at one end of the press contact terminal 71, and an electric wire press contact portion 73 having a slit-shaped press contact blade 74 is formed at the other end. Such a pressure contact terminal 71 is accommodated in the connector housing 62 to constitute a so-called female substrate pressure contact connector 61.
[0006]
In the insulating substrate 52, terminal insertion holes 53 are formed in a staggered pattern so that the wire pressure contact portions 73 of the pressure contact terminals 71 can be inserted. Further, a connector mounting portion 54 is formed on the peripheral portion of the insulating substrate 52 so that the board pressure contact connector 61 can be detachably attached.
[0007]
The board pressure contact connector 61 is fixed by directly attaching the end face after fitting to the connector mounting portion 54 of the insulating board 52. The wire pressure contact portion 73 of the pressure contact terminal 71 protrudes from the terminal insertion hole 53 of the insulating substrate 52. The wire pressure contact portion 73 is provided with a slit-shaped pressure contact blade 74, and an end portion or an intermediate portion of the wire 80 is press-fitted into the pressure contact blade 74. Thus, by pressing the electric wire 80 to the press contact terminal 71, it is possible to configure a circuit having a desired wiring pattern.
[0008]
When the electric wire 80 and the press contact terminal 71 are connected, there are a case where the end portion of the electric wire 80 is pressed against the press contact blade 74 and an intermediate portion of the electric wire 80 is pressed. Which processing is performed is case by case depending on the circuit configuration.
[0009]
When the ends of the electric wires 80 are pressure-welded, they can be relatively easily pressed except when the outer diameter of the electric wires 80 is larger than the interval between the adjacent pressure-contact terminals 71. However, when the intermediate portion of the electric wire 80 is press-contacted, if the bending portion interferes with the press contact terminal 71 or is bent so that the radius of curvature of the bending portion becomes small, a defect occurs in the bending portion, resulting in poor connection. is there.
[0010]
Therefore, in such a case, it is necessary not to remove the press contact terminal 71 at a position where it interferes with the bending portion or to reduce the curvature radius of the bending portion of the electric wire 80. Moreover, when the diameter of the electric wire 80 is thick, it is necessary to widen the space | interval between the adjacent press-contact terminals 71. FIG.
[0011]
[Problems to be solved by the invention]
There is a tendency for the number of electrical components mounted on automobiles and the like to increase. As a result, the circuit configuration is complicated, the wiring density is increased, the number of terminals disposed on the substrate is increased, and the wiring space of the electric wire is becoming increasingly narrow. Therefore, there is a demand for an insulating substrate with a pressure contact connector for a substrate that can cope with a complicated circuit configuration and a high wiring density without increasing the size of an electrical junction box or the like.
[0012]
The substrate pressure contact connector 61 shown in the prior art is directly attached around the insulating substrate 52. The wire pressure contact portions 73 of the pressure contact terminals 71 are arranged in a staggered manner on the insulating substrate 52 and protrude vertically, so that the number of poles of the pressure contact terminals 71 can be increased and the wires 80 can be wired with high density.
[0013]
However, the adjacent interval of the pressure contact terminals 71 and the distance between the front and rear sides are narrow, and when the ends of the electric wires 80 are pressed, the electric wires 80 interfere with the pressure contact terminals 71 or the plate-like pressure contact terminals 71 are connected. Sometimes it was bent.
[0014]
Moreover, since all the wire pressure contact portions 73 of the pressure contact terminals 71 accommodated in the connector 61 in two upper and lower stages (FIGS. 9 and 12) protrude in the same direction, only one side of the insulating substrate 52 is used. As a result, the wiring space on the insulating substrate 52 is narrowed, the wiring path cannot be secured, and there is a concern that the electric wires 80 are tangled.
[0015]
Furthermore, when branching and connecting the intermediate portion of the electric wire 80, the bending portion of the electric wire 80 interferes with the press contact terminal 71, and the wiring operation of the electric wire becomes complicated. When it was bent forcibly, there was a concern that the electric wire 80 would come out of the slit groove of the press contact blade 74. In such a case, there is no choice but to change the design so that the interfering press contact terminal 71 is removed or the interval between the press contact terminals 71 is widened, and the degree of freedom of the wiring pattern is small, leading to an increase in the size of the connector. .
[0016]
In addition, since four types of bent press contact terminals 71 having different lengths are required, the circuit configuration is complicated, workability and production controllability are poor, and it is an obstacle to low-cost production.
[0017]
In view of the above points, the present invention secures the wiring space of the wires, improves the wiring workability and the reliability of circuit connection, and reduces the number of parts to reduce the cost. An object is to provide an insulating substrate with a connector.
[0018]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a connector housing in which a plurality of electric wires wired to an insulating substrate, a plurality of bent press contact terminals for connecting the electric wires, and the press contact terminals are mounted along the substrate portion. In the board pressure contact connector, the insulating board is arranged on both the front and back sides of the board portion of the connector housing, and the pressure contact terminal has one electrical contact portion arranged in the connector housing and two upper and lower stages. arranged in parallel, piezoelectric contact the other wire insulation displacement portions of the terminals is protruded from the upper and lower surfaces of the insulating substrate, wherein the wire insulation displacement portions of the respective pressure contact terminals facing vertically protrudes in the same direction, and left and right The wire pressure contact portions of the pressure contact terminals adjacent to each other protrude in the reverse direction, and the wire pressure contact portions of the pressure contact terminals facing vertically are arranged to be opposed to each other in the front-rear direction, and adjacent to the left and right Between the wire pressure contact portion of the pressure contact terminal, characterized in that are partitioned by plate-like insulating wall (claim 1).
[0019]
In particular, as described above, the press contact terminals are arranged in parallel in two upper and lower stages on the connector housing, and the wire press contact portions of the press contact terminals facing each other vertically protrude in the same direction and are adjacent to the left and right. wherein said wire insulation displacement portions of the pressure contact terminals that protrude in opposite directions.
[0020]
Further, the facing up or down the wire pressure contact portion of the press contact terminals are disposed to face the back and forth between the electric wire pressure contact portion of the pressure contact terminal adjacent to the left and right, are partitioned by plate-like insulating wall Tei Ru.
[0021]
Further, in the substrate for insulation displacement connector according to claim 1, wherein each pressure contact terminal facing vertically, it is also effective that consists of lengths of two different types of pressure contact terminal (claim 2).
[0022]
Below, the effect | action and effect based on the said structure are demonstrated.
In the first aspect of the invention, since the electric wire is sandwiched between the electric wire pressure contact portions of the pressure contact terminals protruding from the upper and lower surfaces of the insulating substrate to constitute the circuit, the wiring space is secured, and the interference between the wires and the electric wire and the pressure contact are achieved. The wiring workability and circuit connection reliability can be improved without causing interference with the terminals.
[0023]
In the second aspect of the invention, the wire pressure contact portions of the pressure contact terminals facing vertically and the wire pressure contact portions of the pressure contact terminals adjacent to the left and right protrude from both the upper and lower surfaces of the insulating substrate in opposite directions. The distance between the pressure contact terminals is widened and the distance between the adjacent pressure contact terminals is also widened, so that problems such as interference between wires and interference between wires and terminals can be avoided. Connection reliability can be improved.
[0024]
In invention of Claim 3, since between the electric wire press-contact part of each press-contact terminal adjacent to right and left is divided by the insulating wall, an electric wire contacts with the adjacent terminal and a short circuit occurs, or various electrical components are It is possible to prevent malfunction.
[0025]
In the invention described in claim 4, since two types of press contact terminals are used, the number of parts constituting the connector can be reduced, and the cost can be reduced.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Specific examples of embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 7 show an embodiment of an insulating substrate with a board pressure connector according to the present invention. The insulating substrate with the board pressure contact connector of the present invention is applied to an electrical connection box (not shown).
[0027]
As shown in FIGS. 1 and 2, an insulating substrate 21 with a board pressure contact connector (hereinafter referred to as a board pressure contact connector) connects a plurality of electric wires 40 wired to the insulating substrate 12 and the electric wires 40. A plurality of bent pressure contact terminals 31 and 36 and a connector housing 22 to which the pressure contact terminals 31 and 36 are mounted along the board portion 24 (see FIG. 4 and the like). The basic circuit body 11 includes an insulating substrate 12 and a substrate pressure contact connector 21.
[0028]
An electrical connection box (not shown) includes a plurality of substrates and an insulating case (not shown) that accommodates the substrates. The insulating case includes an upper case, a lower case, and a side case. Although the substrate may be used alone, it is generally used by laminating in the thickness direction. Generally, it is used by being laminated with a substrate in which a circuit body is constituted by a busper, a fuse, a relay, and the like.
[0029]
The insulating substrate 12 is made of polypropylene or other synthetic resin as a constituent material and is formed in a thin flat plate shape, and the upper and lower surfaces (both surfaces) 12a and 12b and the side surface 12c constitute the outer surface. The upper and lower surfaces 12a and 12b form a laying surface of the electric wire 40, and form terminal insertion holes 14 through which the electric wire pressure contact portions 33 and 33 (see FIG. 4 and the like) of the pressure contact terminals 31 and 36 are inserted according to the circuit configuration.
[0030]
A plurality of terminal insertion holes 14 are formed, and a circuit can be configured according to a desired wiring pattern. Connector mounting portions 13 are formed in a cutout shape at a plurality of locations on the peripheral edge of the insulating substrate 12, and the board pressure contact connector 21 is attached to the insulating substrate 12 in the horizontal direction .
[0031]
The connector housing 22 is a so-called female connector housing 22, and the substrate portion 24 continues through the substrate support portion 25 on the rear end surface side. The substrate support portion 25 and the substrate portion 24 (see FIG. 4 and the like) correspond to attachment portions for the insulating substrate 12. The front and rear concepts are such that the side that mates with the mating connector (not shown) is the front side, and the side that is attached to the connector mounting portion 13 of the insulating substrate 12 is the rear side.
[0032]
In the fitting space 23 of the connector housing 22, the electrical contact portions 32 and 37 of the press contact terminals 31 and 36 protrude so that they can be connected to a female electrical contact portion (not shown) of the mating connector. Yes.
[0033]
The substrate portion 24 is formed in a rectangular shape from the upper surface 24a, the lower surface 24b, the side surface 24c, and the rear end surface 24d, and the press contact terminals 31 and 36 can be guided and supported on the upper and lower surfaces 24a, 24b and the rear end surface 24d. A guide groove 26 (FIG. 4) is recessed. Further, the planes excluding the guide grooves 26 on the upper and lower surfaces 24 a and 24 b are flat mounting surfaces with respect to the insulating substrate 12.
[0034]
As shown in FIGS. 6 and 7, the press contact terminals 31 and 36 are formed in a bent shape that bends into an L shape or an inverted L shape. The electrical contact portions 32 and 37 at one end are disposed so as to protrude into the fitting space 23 of the connector housing 22 so as to be connected to a female electrical contact portion (not shown) of the mating connector. . The base side of the electrical contact portions 32 and 37 extends to the board portion 24 side of the connector housing 22 and is supported by the guide groove 26.
[0035]
The other electric wire pressure contact portions 33 and 38 are bent at right angles or substantially right angles with respect to the electric contact portions 32 and 37, and the end portions are slit-shaped pressure contacts so that they can be used for connection with the electric wires 40. Blades 34 and 39 (see FIG. 5 etc.) are provided.
[0036]
Since the press contact blades 34 and 39 are formed in an inclined shape at the opening end portion of the slit groove, the press-fitted electric wire 40 is guided by the cutting blade, and at the same time, the insulating sheath is cut and further press-fitted. It enters into the groove and is sandwiched. In addition, the groove | channel space | interval of the press contact blades 34 and 39 is set to the predetermined space | interval which does not tear the core wire part of the electric wire 40. FIG.
[0037]
The electrical contact portions 32 and 37 are formed longer than the wire pressure contact portions 33 and 38, and project the wire pressure contact portions 33 and 38 vertically or substantially vertically at an inner position spaced apart from the peripheral edge portion of the insulating substrate 12 by a predetermined distance. Be able to. In the present invention, two types of terminals 31 and 36 having different lengths are used. This is so that the wire press contact portions 33 and 38 of the press contact terminals 31 and 36 facing each other vertically do not interfere and can protrude in the same direction. Moreover, the space | interval space | interval of the electric wire press-contact part 33 and 38 is long compared with the former (FIGS. 8-12), and the wiring space is wide. The vertical direction refers to the thickness direction of the insulating substrate 12.
[0038]
The reason why such bent press contact terminals 31 and 36 are used is that the board press contact connector 21 is arranged in parallel to the insulating substrate 12 . Without also likely, the electrical contact portion 32, 37 of the pressure contact terminal 31 and 36, were parallel to extend the upper and lower surfaces 12a, 12 b of the insulating substrate 12, while the wire insulation displacement portions 33, 38 on the insulating substrate 12 This is because it cannot project vertically or substantially vertically. Here, the horizontal direction refers to a direction parallel to the upper and lower surfaces 12a and 12b of the insulating substrate 12.
[0039]
As the electric wire 40, a covered electric wire in which the periphery of the core wire is covered with an insulating outer sheath is used. As shown again in FIGS. 1 and 2, the electric wire 40 is connected to the electric wire pressure contact portions 33 and 38 from both directions.
[0040]
As shown in FIG. 8 in the column of the prior art, conventionally, all the wire pressure contact portions 73 of the pressure contact terminals 71 are projected in the same direction using only one surface of the insulation substrate 52. 80 wiring space was reduced. The electric wire 80 sandwiched between the adjacent press contact terminals 71 may interfere with the adjacent press contact terminal 71 to cause a short circuit or the like. However, in the present invention, since the circuit is configured by using the upper and lower surfaces 12a and 12b of the insulating substrate 12, a wiring space is secured and the occurrence of such a problem is avoided.
[0041]
Next, the press contact terminal 36 and the connector housing 22 will be described in more detail.
As shown in FIGS. 3 to 7, the press contact terminals 31 and 36 are so-called male terminals, and the electrical contact portions 32 and 37 protrude into the fitting space 23 of the connector housing 22. Since the press contact terminals 31 and 36 are separated at a predetermined interval, they do not contact and short-circuit. Further, since the press contact terminals 31 and 36 are accommodated in the connector housing 22 by insert molding or press fitting, rearward disconnection is prevented.
[0042]
As shown in FIGS. 1 and 2, the board pressure contact connector 21 is directly attached in parallel with the insulating board 12. A plurality of the press contact terminals 31, 36 arranged in two upper and lower stages are housed in the connector housing 22, arranged in the horizontal direction. The arrangement of the pressure contact terminals 31 and 36 in a two-stage configuration is the same as in the prior art. The difference from the conventional one is that the protruding directions of the wire pressure contact portions 33 and 38 protruding vertically from the insulating substrate 12 are not the same direction (see FIG. 6 and the like).
[0043]
Since the press contact terminals 31 and 36 are bent, the connector housing 22 can be directly attached in the horizontal direction rather than the plate thickness direction of the insulating substrate 12, and when the insulating substrate 12 is laminated, the board press contact connector 21 becomes an obstacle. Thus, it is possible to prevent the distance in the plate thickness direction between the substrates from increasing. On the other hand, when straight terminals are used, the connector must be directly attached in the thickness direction of the insulating substrate, and there is a problem that the electrical junction box becomes large when the insulating substrates are stacked.
[0044]
As shown in FIGS. 5 to 7, since the press contact terminals 31 and 36 are bent as a whole, the wire press contact portions 33 and 38 are connected to the insulating substrate in a state where the connector 21 is directly attached to the insulating substrate 12 in the horizontal direction. The twelve terminal insertion holes 14 can project vertically or substantially vertically. The protruding direction does not protrude in the same direction in the thickness direction of the insulating substrate 12, but the wire pressing portions 33 and 38 of the pressing terminals 31 and 36 adjacent to the left and right (width direction) protrude in the upside down direction. Yes. The wire press contact portions 33 and 38 of the press contact terminals 31 and 36 that face each other vertically protrude in the same direction (see FIGS. 6 and 7).
[0045]
The wire pressure contact portions 33 and 38 of the pressure contact terminals 31 and 36 adjacent to the left and right are partitioned by a plate-like insulating wall 15 (see FIGS. 1 and 2), and the pressure contact terminals 31 and 36 are in contact with each other. To prevent short circuit.
[0046]
Two types of press contact terminals 31 and 36 having different lengths are used for the press contact terminals 31 and 36 facing vertically. Conventionally, four kinds of pressure contact terminals are used and are arranged so that the pressure contact terminals do not interfere with each other. However, it is obvious that the structure of the connector becomes complicated when there are many types of pressure contact terminals, but at the same time, there is a problem that the compatibility between the terminals is not high and the number of parts increases, resulting in high costs. Was.
[0047]
In the present invention, since the two types of press contact terminals 31 and 36 are used in consideration of such a problem, the structure of the connector 21 can be made compact (the connector can be shortened), and the press contact terminals 31 and 36 can be connected to each other. There is also compatibility, and the number of parts is reduced, so there is an advantage that the cost can be reduced.
[0048]
【The invention's effect】
As described above, according to the invention described in claim 1, since the press contact terminals connected to the electric wires protrude from the upper and lower surfaces of the insulating substrate, a wiring space is secured on the insulating substrate, and interference between electric wires and The wiring workability and circuit connection reliability can be improved without causing interference with the press contact terminal.
[0049]
Further, a wire insulation displacement portion of the pressure contact terminal facing up or down, since each pressure contact terminal adjacent to the right and left are protruded in opposite directions from the upper and lower surfaces of the insulating substrate to each other, with opposing distance of the press pin is widened, The distance between adjacent press contact terminals is also widened, and problems such as interference between wires and interference between wires and terminals can be avoided.
Therefore, the wiring workability of the electric wire and the reliability of circuit connection can be improved. In addition, an increase in the number of wires can be dealt with by utilizing the empty space.
[0050]
Furthermore, since between the pressure contact terminal adjacent to the left right are partitioned by insulating walls, it is possible to prevent the wires or cause a short circuit in contact with the adjacent terminals, various electrical components may malfunction.
[0051]
Further, according to the invention described in claim 2, since two kinds of press contact terminals are used, the structure of the connector can be made compact, and there is compatibility between the press contact terminals, and the number of parts is reduced. Cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view of a main part in an attached state of a connector mounting portion of an insulating substrate according to an embodiment of the board pressure contact connector of the present invention.
FIG. 2 is a bottom view of a main part in a state where it is similarly attached to a connector mounting part of an insulating substrate.
3 is a front view of the board pressure contact connector shown in FIG. 1. FIG.
4 is a plan view of the board pressure contact connector shown in FIG. 3. FIG.
5 is a rear view of the board pressure contact connector shown in FIG. 3; FIG.
6 is a cross-sectional view taken along line AA of the board pressure contact connector shown in FIG. 4;
7 is a cross-sectional view taken along the line BB of the board pressure contact connector shown in FIG.
FIG. 8 shows an example of a conventional board pressure contact connector, and is a plan view of a main part in a state where it is attached to a connector mounting part of an insulating board.
9 is a front view of the board pressure contact connector shown in FIG. 8;
10 is a plan view of the board pressure contact connector shown in FIG. 9. FIG.
11 is a rear view of the board pressure contact connector shown in FIG. 9;
12 is a cross-sectional view taken along the line CC of the board pressure contact connector shown in FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Basic circuit body 12 Insulation board 14 Terminal insertion hole 15 Insulation wall 21 Board pressure contact connector 22 Connector housing 24 Board part 26 Guide groove 31, 36 Pressure contact terminal 32, 37 Electric contact part 33, 38 Wire pressure contact part 34, 39 Pressure contact blade 40 electric wires

Claims (1)

A plurality of electric wires to be wired to the insulating substrate, a plurality of pressure contact terminals of the L-shaped connecting the electric wire, piezoelectric contact terminals of the substrate with the pressure-contact connector composed of a connector housing to be mounted along the substrate portion In the insulating substrate ,
The insulation contact board is disposed by inserting the insulation contact board into the insertion hole of the insulation board on both front and back sides of the board part of the connector housing, and one electrical contact part of the insulation contact terminal is arranged in the connector housing. In addition , the upper and lower surfaces of the substrate portion are arranged in parallel in two stages, and the other wire pressure contact portion of the pressure contact terminal protrudes from both the upper and lower surfaces of the insulating substrate, and the wire pressure contact of each pressure contact terminal facing up and down. And the wire pressure contact portions of the pressure contact terminals adjacent to the left and right are protruded in the opposite direction, and the wire pressure contact portions of the pressure contact terminals facing vertically are the rear end surfaces of the substrate portion. An insulating substrate with a pressure contact connector for a substrate , wherein the insulating substrate is disposed so as to be opposed to each other in a direction .

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