JPH08196019A - Multi-connection type crimp terminal and electric connection box - Google Patents

Abstract

PURPOSE: To provide a multi-connection type crimp terminal and an electric connection box in which the high density and the miniaturization of an electric circuit and the high productivity of a connection process can be achieved, as to a multi-connection type crimp terminal and an electric connection box used for the electric wiring of an automobile. CONSTITUTION: A multi-connection type crimp terminal A is provided with an upper-side ale terminal part 2 extended from a base board part 1, lower-side ale terminal parts 3a, 3b, 3c, 3d hung down from the base board part 1 and slits 4, 4' for press-fitting an electric wire, and the upper-side male terminal part 2 and the lower-side male terminal parts 3a, 3b, 3c, 3d are connected to an electric component such as a fuse and at the sane time an electric wire is pressed against the slits 4, 4'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiple connection type pressure contact terminal used for electric wiring of an automobile and an electrical connection box using the multiple connection type pressure contact terminal.

[0002]

2. Description of the Related Art The internal circuit of a conventional electrical junction box is formed by stacking wiring boards formed by arranging a circuit conductor made of a thin sheet metal, which is generally called a bus bar, and connecting a tab terminal provided at an end of the bus bar to a connector. It is designed to be connected to electrical parts such as. In recent years, with the sophistication and diversification of in-vehicle electrical components, there has been a demand for higher density, smaller size, and lighter weight of electric circuits in an electric connection box.
As shown in FIGS. 14 and 15, Japanese Patent No. 419 discloses an electric connection box S in which a bus bar circuit, a wire and a circuit including pressure contact terminals are combined with a part of the electric circuit in the electric connection box.
Proposed.

In the electric junction box S, the power source side circuit P connected to the fuse a in the internal circuit is formed by the bus bar b, and the load side circuit L is formed by the electric wire c and the pressure contact terminal d for the electric wire c. There is. However, the pressure contact terminal d of the load side circuit L in the electric junction box S is set so as to connect one type of electric wire c. Therefore, when it is applied to a complicated electric circuit, it is necessary to dispose a large number of pressure contact terminals d and electric wires c, which makes it difficult to achieve high density, miniaturization, and weight reduction of the electric circuit. There is a problem that it becomes complicated and the productivity decreases.

On the other hand, Japanese Utility Model Laid-Open No. 61-124967 discloses a pressure contact terminal T having a plurality of male terminal portions e which can be used in a branch circuit, as shown in FIG. However, even if such a pressure contact terminal T is adopted in the circuit in the electric connection box, the step of pressing the electric wire into the slot f needs to be performed for each pressure contact terminal, and the problem that the connection step becomes complicated is a problem. I can't solve it.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to achieve high density, miniaturization, and weight reduction of an electric circuit, and excellent reliability of a connecting portion. An object of the present invention is to provide a multiple connection type pressure contact terminal and an electrical connection box using the multiple connection type pressure contact terminal with high process productivity.

[0006]

In order to achieve the above-mentioned object, the multiple connection type pressure contact terminal of the invention described in claim 1 is
It is characterized in that it is provided with an upper male terminal portion formed of a thin sheet metal and extending from the substrate portion, a plurality of lower male terminal portions hanging from the substrate portion, and a slit for press-fitting an electric wire. The slit is preferably a multi-stage slit in which slits having different gap widths are continuously arranged in a stepwise manner (claim 2). It is also effective to provide the slit in the upper male terminal portion (claim 3). It is preferable that the slits are provided at different levels with respect to the insertion direction of the male terminal portion (claim 4).

According to a fifth aspect of the present invention, there is provided an electric connection box in which an electric wire or a wiring board on which an electric wire and another circuit conductor are arranged is housed in a cover which constitutes the electric connection box. A terminal insertion hole is provided in the plate, and the upper male terminal portion or the lower male terminal portion of the multiple connection type pressure contact terminal according to claim 1 is inserted into the terminal insertion hole to insert the multiple connection type pressure contact terminal. An electric wire arranged in the electric connection box is pressed against the slit, and an electric component mounted on the cover is connected via the multiple connection type pressure contact terminal. The electric wire arranged in the electric junction box is preferably an electric wire connected to the bus bar arranged on the wiring board or the cover (claim 6). It is effective that the wiring board is laminated with a plurality of bus bar circuit boards, and the electric wires arranged on the bus bar circuit boards are connected to each other through the multiple connection type pressure contact terminal (claim 7). It is preferable that the electric wire arranged in the electric connection box is an electric wire gripped by an electric wire gripping claw attached to the wiring board or the cover (claim 8).

[0008]

The multi-connection type pressure contact terminal of the present invention has the upper male terminal portion, the lower male terminal portion, and the electric wire connecting portion. Therefore, if this is used in the circuit of the electric connecting box, Wiring for connecting electrical parts to be mounted on the upper cover, for example, a fuse and an upper male terminal portion, connecting a connector of a wire harness to be mounted on the lower cover and the lower male terminal portion, and to be housed in an electrical junction box The electric wire arranged on the plate can be pressed into the slit of the electric wire connecting portion.

Further, by forming the slits in a staircase shape or providing them in different steps, the upper male terminal portion or the lower male terminal portion of the multiple connection type pressure contact terminal is wired for each of a plurality of laminated wiring boards. It is also possible to pierce the plate and connect the electric wires constituting the circuit arranged on each wiring board by press-contacting with the slit provided at a predetermined position of the multiple-connection type press-connecting terminal. Therefore, interlayer connection between circuits formed on a plurality of wiring boards becomes possible, the busbar circuit is reduced, the reliability of the connection part is improved, and the electrical connection box is made smaller and lighter due to the high density of the connector arrangement. Can be achieved.

Further, by attaching an electric wire gripping claw to the wiring board or the cover, the electric wires forming the circuit are routed by a wire laying machine or the like and locked to the electric wire gripping claw, and the multiple connection type pressure contact terminal is attached. When inserting into the wiring board, it is possible to press the wires locked by the wire gripping claws together into the slits of the multiple connection type pressure contact terminal, thus improving the productivity of the assembly process of the electrical connection box. Remarkably improved.

[0011]

1 is a perspective view showing a multiple connection type pressure contact terminal A according to an embodiment of the present invention. Multiple connection type pressure contact terminal A
Is formed by bending a thin sheet metal, and includes an upper male terminal portion 2 extending from an upper edge portion 1a of the substrate portion 1 and a substrate portion 1.
Lower male terminal portions 3a, 3
b, 3c, 3d and electric wire connecting portions 5, 5'having slits 4, 4 '.

The lower male terminal portions 3a, 3b, 3c, 3d are
It is formed by bending the substrate part 1 at a substantially right angle,
Each is arranged in parallel. Edge 5a between 3a and 3b
A wire connecting portion 5 having a slit 4 formed by cutting is formed, and a slit 4'is provided between the lower male terminal portions 3c and 3d.
An electric wire connecting portion 5'having a is formed. Slit 4
Is a multi-stage slit formed in two stages, a thick line slit 4a and a thin line slit 4b having different slit gap widths. Similarly to the slit 4, the slit 4'is also formed of a thick line slit 4a 'and a thin line slit 4b'.

FIG. 2 is an exploded perspective view of an electric junction box J according to an embodiment of the invention described in claim 5.
The multiple connection type pressure contact terminal A is used. The electric connection box J has a wiring board 8 sandwiched between an upper cover 6 and a lower cover 7, and a fuse 9 inserted into the upper cover 6 and an electric component 10 such as a connector housing in which the lower cover 7 is arranged.
And are connected via a multiple connection type pressure contact terminal A. 1
Reference numeral 1 is a female-female relay terminal for connecting the multiple connection type pressure contact terminal A and the fuse 9.

The upper cover 6 is provided with a plurality of fuse cavities 12, into which the fuses 9 are respectively inserted. On the outer wall 7a of the lower cover 7, a connector housing 10 for connecting to a wire harness or the like as an electric component is provided, and a terminal insertion hole 13 opening in the connector housing 1 is provided so as to penetrate therethrough. An electric wire gripping claw 14 is attached to the inner wall 7b, and a large-diameter electric wire 15 having a large diameter for a large current is gripped by the electric wire gripping claw 14.

As shown in FIG. 3, the wiring board 8 is formed by laminating two busbar circuit boards 8a and 8b. The busbar 16 provided on the busbar circuit board 8a of the first layer is thinly formed. The diameter electric wire 18 is connected to the second layer bus bar circuit board 8b.
The bus bar 16 ′ provided in the lower cover 7 is connected to the large-diameter electric wire 15 arranged in the lower cover 7. In addition, the wiring board 8 is provided on the lower male terminal portions 3a, 3b, 3c of the multi-connection type pressure contact terminal A,
A U-shaped terminal insertion hole 19 for inserting 3d and the electric wire connecting portions 5 and 5'is provided.

An electric wire gripping claw 17 is attached to the bus bar circuit board 8a of the first layer of the wiring board 8, and a thin electric wire 18 having a small diameter for a small current is fixed to the electric wire gripping claw 17.
Although one end of the large-diameter electric wire 15 arranged on the lower cover 7 is not shown, a third layer busbar circuit board 3c (see FIG. 5) laminated between the busbar circuit boards 8a and 8b and the lower cover 7 is shown. ) Is connected to the bus bar. The number of wiring boards 8 can be arbitrarily increased or decreased as needed.

Next, the process of assembling the electric junction box J will be described. First, the large-diameter electric wire 15 is arranged on the lower cover 7, and as shown in FIG. 4, the large-diameter electric wire 15 is press-fitted and held between the facing claw pieces 14 a and 14 a that constitute the electric wire gripping claw 14. Next, the bus bar circuit board 8c of the third layer is placed on the lower cover 7, and then the wiring board 8 is placed as shown in FIG.
Is superposed on the wire gripping claw 14. At this time, the pressure contact terminal portion 1 of the bus bar 16 'of the second layer bus bar circuit board 8b is
6a 'and the large-diameter electric wire 15 are pressed against each other. Then, the small-diameter electric wire 18 is arranged on the bus bar circuit board 8c of the first layer of the wiring board 8, and the electric wire grasping claw 17 holds the small-diameter electric wire 18.

Next, as shown in FIG. 6, the lower male terminal parts 3a, 3b, 3c, 3d of the multiple connection type pressure contact terminal A and the wire connection parts 5, 5'are respectively connected to the terminals of the wiring board 8. Insertion hole 1
9 and the lower male terminal portions 3a, 3b, 3c, 3d are inserted into the terminal insertion holes 13 of the lower cover 7. At this time, the small-diameter electric wire 1 grasped by the electric wire grasping claw 17 of the wiring board 8
8 and the large-diameter electric wire 15 gripped by the electric wire gripping claw 14 of the lower cover 7, the slit 4 of the multiple connection type pressure contact terminal A,
4 ', and as shown in FIG. 7, the small-diameter electric wire 18 and the large-diameter electric wire 15 are pressed and fixed to the thin wire slit 4b and the thick wire slit 4a, respectively.

As shown in FIG. 8, the relay terminal 11 is inserted into the upper male terminal portion 2 of the multiple connection type pressure contact terminal A fixed to the wiring board 8 and the lower cover 7, and as shown in FIG. The fuse 9 is inserted into the fuse cavity 12 of the upper cover 6, and the connection terminal portion 9 a of the fuse 9 is connected to the relay terminal 11. On the other hand, the lower male terminal portions 3a, 3b, 3c of the multiple connection type pressure contact terminal A protruding into the connector housing 10,
3d is connected to the connectors 21 and 21 'attached to the ends of the wire harnesses 20 and 20'.

FIG. 10 is a side view showing a multiple connection type pressure contact terminal B as another embodiment. Multiple connection type pressure contact terminal B
Is formed by cutting the slit 22 from above the upper male terminal portion 23. The multiple connection type pressure contact terminal A described above.
The slits 4 and 4'are opened downward and pressed from above the electric wire to press the electric wire into the slits 4 and 4 '.
Since the open end of 2 is upward, the thin electric wire 18 and the large electric wire 15 are press-fitted into the slit 22 from above the multiple connection type pressure contact terminal B fixed to the lower case 7, and the thick wire slit 22a has a large diameter. The electric wire 15 is configured such that the small-diameter electric wire 18 is fixed to the thin wire slit 22b. Therefore, after fixing the multiple connection type pressure contact terminal B to the lower case 7, the electric wire can be pressed into the slit 22.

FIG. 11 is an exploded perspective view of an electric connection box J'using the multi-connection type pressure contact terminal C. The electric junction box J ′ includes an upper cover 6, a multiple connection type pressure contact terminal C,
The upper cover 6 includes a wiring board 24 and a lower cover 7.
And the lower cover 7, and the fuse 9 and the connector housing 1 which are electric parts mounted on the upper cover 6 and the lower cover 7.
0, the relay terminal 11 and the like are the same as those of the electric junction box J, and thus the description thereof is omitted.

The multiple connection type pressure contact terminal C is formed by bending into the same shape as the multiple connection type pressure contact terminal A, and has an upper male terminal portion 2 extending from the upper edge 1a of the substrate portion 1 and the substrate. A lower male terminal portion 3a formed by bending the portion 1 at a substantially right angle,
3b, 3c, 3d, and the slit 25 (3a, between the lower male terminal portions 3a and 3b and between 3c and 3d).
It is composed of an electric wire connecting portion 26 provided only between 3b) and a slit 27 formed by cutting the lower edge 1a of the substrate portion 1 between the lower male terminal portions 3b and 3c. The slit 25 and the slit 27 are formed in different steps.
Is provided below.

The wiring board 24, like the wiring board 8, has a first
Busbar circuit board 24a of the second layer, Busbar circuit board 2 of the second layer
4b, a wire gripping claw 28 is provided at a predetermined position on the bus bar circuit board 24a of the first layer, which is separated from the terminal insertion hole 19, that is, at a position corresponding to the slit 27 of the multiple connection type pressure contact terminal C, The small-diameter electric wires 18 arranged on the wiring board 24 are held by the electric wire holding claws 28.

In the process of assembling the electric connection box J ', as in the case of the electric connection box J, as shown in FIG. 12, after the wiring board 24 is overlaid on the lower cover 7, the bus bar circuit board 24c of the third layer is formed. 13, the lower male terminal portions 3a, 3b, 3c, 3d of the multiple connection type pressure contact terminal C and the wire connecting portions 26, 26 'are respectively inserted into the terminals of the wiring board 24 as shown in FIG. The terminal insertion hole 1 of the lower cover 7 is inserted through the hole 19.
The lower male terminal portions 3a, 3b, 3c, 3d are inserted into the connector 3.

At this time, the small-diameter electric wire 19 grasped by the electric wire grasping claw 28 of the wiring board 24 is press-fitted into the slit 27, and the large diameter electric wire 15 grasped by the electric wire grasping claw 14 of the lower cover 7.
Are fixed in the slit 25 of the multiple connection type pressure contact terminal C by pressure contact. The upper male terminal portion 2 and the lower male terminal portions 3a, 3
The connections to b, 3c, and 3d are the same as in the case of the electric junction box J, so description will be omitted.

[0026]

When the multi-connection type pressure contact terminal of the present invention is used in the circuit of the electric connection box, it is installed in the electric parts mounted on the cover of the electric connection box and the wiring board housed in the electric connection box. It is possible to connect to the electric wire via the multi-connection type pressure contact terminal. Also, by forming the slits of the multi-connection type pressure contact terminal in a stepwise manner or by providing them in different steps, the wires constituting the circuits arranged on each wiring board are multiply connected to the wiring boards laminated. By making pressure contact with a slit provided at a predetermined position of the die pressure contact terminal, interlayer connection between wiring boards becomes possible, reducing bus bar circuits, improving reliability of connection parts, and increasing the density of connector arrangement for electrical connection. The size and weight of the box can be reduced.

Further, by attaching a wire gripping claw to the wiring board or the cover and locking the wire with the wire gripping claw,
When inserting the multiple connection type pressure contact terminal into the wiring board, it is possible to collectively press the wires locked to the wire gripping claws into the slits of the multiple connection type pressure contact terminal at the same time. There are many advantages such as a marked improvement in the productivity of the assembly process.

[Brief description of drawings]

FIG. 1 is a perspective view of a multiple connection type pressure contact terminal showing an embodiment of the invention described in claim 1. FIG.

FIG. 2 is an exploded perspective view showing an electric junction box according to an embodiment of the invention described in claim 5.

FIG. 3 is a perspective view showing the structure of the wiring board of FIG. 2 separately.

FIG. 4 is a cross-sectional view showing a state in which an electric wire is locked to an electric wire gripping claw of the lower cover of FIG.

5 is a cross-sectional view showing a state in which a wiring board is superposed on the lower cover of FIG.

FIG. 6 is a cross-sectional view showing a state in which a multiple connection type pressure contact terminal is inserted and attached to the wiring board and the lower cover of FIG.

FIG. 7 is an explanatory diagram showing a state in which an electric wire is pressure-welded to a slit of the multiple connection type pressure-contact terminal of FIG.

8 is an explanatory view showing a state in which a relay terminal is inserted in the upper male terminal portion of the multiple connection type pressure contact terminal of FIG.

9 is an explanatory diagram showing a state in which a fuse is connected via the relay terminal of FIG. 8 and a connector of a wire harness is connected to a lower male terminal portion.

FIG. 10 is a side view showing a multiple connection type pressure contact terminal according to another embodiment of the invention described in claim 1.

FIG. 11 is an exploded perspective view showing an electric junction box according to another embodiment of the invention described in claim 5.

12 is a cross-sectional view showing a state in which a wiring board is superposed on the lower cover of FIG.

13 is a cross-sectional view showing a state in which a multiple connection type pressure contact terminal is inserted and attached on the wiring board of FIG.

FIG. 14 is an explanatory diagram showing a circuit of a conventional electrical junction box.

15 is an exploded perspective view of the electric junction box of FIG.

FIG. 16 is a perspective view showing a conventional pressure contact terminal having a plurality of male terminal portions.

[Explanation of symbols]

 A, B, C Multiple connection type pressure contact terminal J, J'Electric junction box 1 Board part 2 Upper male terminal part 3a, 3b, 3c, 3d Lower male terminal part 4, 4'slit 4a, 4a 'Thick wire slit 4b 4b 'Fine wire slit 6 Upper cover 7 Lower cover 8 Wiring board 8a, 8b, 8c Busbar circuit board 13 Terminal insertion hole 14 Electric wire gripping claw 15 Large diameter electric wire 17 Electric wire gripping claw 18 Small diameter electric wire 19 Terminal insertion hole 24 Wiring board 24a, 24b, 24c Busbar circuit board 25 Slit 27 Slit 28 Electric wire gripping claw

Claims (8)

[Claims] 1. A multiplex characterized by comprising an upper male terminal portion formed of a thin sheet metal and extending from a substrate portion, a plurality of lower male terminal portions hanging from the substrate portion, and a slit for press-fitting an electric wire. Connection type pressure contact terminal. 2. The multiple connection type pressure contact terminal according to claim 1, wherein the slit is a multi-stage slit in which slits having different gap widths are continuously arranged in a stepwise manner. 3. The multiple connection type pressure contact terminal according to claim 1, wherein the slit is provided in the upper male terminal portion. 4. The multiple connection type pressure contact terminal according to claim 1, 2, or 3, wherein the slits are provided at different levels with respect to the inserting direction of the male terminal portion. 5. An electric connection box in which an electric wire or a wiring board on which an electric wire and another circuit conductor are arranged is housed in a cover constituting the electric connection box, and a terminal insertion hole is provided in the cover and the wiring board. The upper male terminal portion or the lower male terminal portion of the multiple connection type pressure contact terminal according to any one of claims 1 to 4 is inserted into the terminal insertion hole, and the slit of the multiple connection type pressure contact terminal is inserted into the electrical connection box. An electrical junction box characterized in that the wired electric wires are pressure-welded and the electric parts mounted on the cover are connected via the multiple-connection type pressure-welding terminals. 6. The electric connection box according to claim 5, wherein the electric wire arranged in the electric connection box is an electric wire connected to a bus bar arranged on a wiring board or a cover. 7. The wiring board is laminated with a plurality of bus bar circuit boards, and the electric wires arranged on the bus bar circuit boards are connected to each other through a multiple connection type pressure contact terminal. The electrical junction box according to claim 6. 8. The electric wire arranged in the electric junction box is an electric wire gripped by an electric wire gripping claw attached to a wiring board or a cover, claim 4, claim 5, claim 6 or claim 7. Electrical junction box.