JP2532536Y2 - Electrical connection structure of branch junction box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connection structure of a branch connection box used for wiring of an electric circuit for a vehicle, and more particularly, to a type in which an electric wire connection terminal connected in parallel to a connector is connected to a vertical bus bar. In this device, the terminal pitch can be narrowed, and the size and the density are increased.

[0002]

2. Description of the Related Art Conventionally, in this type of junction box,
Houses a number of notched vertical busbars inside the case,
A connection terminal having a tongue piece connected to the wire harness side is fitted to and connected to the bus bar.

As a method of connecting terminals to the bus bar, conventionally, as shown in FIG. 10, a branch connection box (not shown) is used.
(Japanese Utility Model Laid-Open No. 57-161871) has been proposed in which a terminal 2 is fitted to and connected to a bus bar 1 mounted on a case using the spring property.

[0004]

However, in the above-described conventional connection structure between the bus bar 1 and the terminal 2, the terminal 2 is provided with the spring tongues 2a, 2a and the spring tongues 2a, 2a are connected to the bus bar 1 from above. Since the terminal 2 is inserted and clamped on both sides, the width W1 of the terminal 2 is increased, and the spring tongue 2
Since the flexible spaces a and 2a are required, it is difficult to reduce the pitch between adjacent terminals, and there is a problem that the size of the branch connection box is increased. In addition, since it is necessary to process the complicated spring tongue pieces 2a, 2a on the terminal 2, there is a problem that the cost is increased.

Accordingly, an object of the present invention is to reduce the pitch between the adjacent terminals, thereby making it possible to reduce the size and consolidation of the junction box, and to simplify the shape of the terminals. It is intended to reduce the cost of the terminals.

[0006]

According to the present invention, a plurality of busbars are attached to a case of a junction box at predetermined intervals, and each of the busbars has a notch in a vertical direction. On the other hand, a wire connection terminal corresponding to each notch of each of the bus bars is attached to a connector fitted to the branch connection box, and a flat-plate-shaped pressure contact portion formed of a front substrate portion of each of the terminals is provided. The present invention provides an electrical connection structure for a branch connection box, characterized in that the bus bar is cut from above and / or below the notch of the front end thereof and fitted and pressed and connected in an orthogonal state.

Also, bent ribs are provided on both sides of the pressure contact portion of the terminal to maintain the strength of the pressure contact portion with the bus bar notch, thereby preventing deformation of the pressure contact portion.

[0008]

According to the electrical connection structure of the branch junction box of the present invention,
A press-contact portion formed by a front substrate portion of the terminal is press-fitted into the notch of the bus bar from above in an orthogonal state and pressed to form a press-contact connection between the metal of the bus bar and the terminal. This eliminates the need for a spring tongue, which is required when using a terminal spring, so that the width of the terminal can be reduced and the pitch between adjacent terminals can be reduced. Can be downsized. Further, since it is not necessary to process a complicated spring tongue piece for the terminal, the terminal can be manufactured at low cost. Furthermore, if the branch junction box and the connector are the same size as the conventional one, the number of joints can be increased, while if the branch junction box and the connector are miniaturized, versatility is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. As shown in FIG. 3 and FIG.
, A plurality of rectangular bus bars 13,..., 13 are vertically mounted at predetermined intervals between the upper case 11 and the lower case 12. Each of the busbars 13 is formed by cutting out a brass strip hoop material.

Each of the above-mentioned bus bars 13 has a notch 13a in the vertical direction along both sides in the longitudinal direction at both upper and lower ends in FIGS. 1 and 2 (right and left ends in FIGS. 3 and 4). 1
3a are provided at predetermined intervals. In addition, a pilot hole 13 b for positioning is provided in an intermediate portion of each bus bar 13.
, 13b are provided at predetermined intervals in the longitudinal direction.

As shown in FIGS. 5 and 6, each of the bus bars 1 is connected to a connector 14 fitted to the branch connection box 10.
Terminals 15,..., 15 corresponding to the notches 13a,.

As shown in detail in FIGS. 7 and 8, each of the terminals 15 has a coating crimp barrel portion 15a-1 and a core wire crimp barrel portion 15a for crimping a coating portion of a terminal of an electric wire 16 on an upper portion of a substrate portion. -2, and a flat plate-shaped press-contact portion 15 for connecting a bus bar formed of a front substrate portion at a lower portion.
b are provided continuously. Also, the press contact portion 15b
Ribs 15d, 15 folded back on the left and right sides of
d is provided. The terminal 15 is formed integrally by bending a conductive metal plate.

The press-contact portion 15b of the terminal 15 is press-fitted into the notch 13a of the bus bar 13 from above in an orthogonal state so that a press-fit connection is made between the metal of the bus bar and the terminal. At this time, the flat plate-shaped press contact portion 15b is prevented from being deformed by the ribs 15d, 15d rising at right angles from both end edges of the press contact portion 15b.

With the above configuration, when the connector 14 is fitted into the branch connection box 10, the press-contact portion 15b of the terminal 15 is formed.
As shown in FIG. 1 and FIG. 2, the pressure contact portion 15 is fitted into the notch 13 a of the bus bar 13 from above in an orthogonal state.
b is cold-connected to both edges of the notch 13a by line contact.

With such a connection structure between the bus bar 13 and the terminal 15, the terminal 15 does not require a spring tongue as in the prior art, and the width W2 of the terminal 15 (see FIG. 9) is, for example, the conventional width. The width W1 was 3 mm, but 2.0 to 2.5 m
m, and the pitch between adjacent terminals 15 can be narrowed, so that the branch junction box 10 and the connector 14 can be reduced in size. Further, since there is no need to process the terminal 15 with a complicated spring tongue piece, the terminal 15 can be manufactured at low cost.

Furthermore, if the size of the branch junction box 10 and the connector 14 can be the same as the conventional one, the number of joints can be increased by the increased size. Is relaxed and versatility is improved.

The notch 13a of the bus bar 13
In other words, if the pitch between the connectors 14 is standardized, regardless of the number of levels of the connectors of the branch connection box 10 and the number of the connectors to be divided as required, the feed at the time of cutting the bus bar 13 is measured. By doing so, various lengths can be manufactured, and the branch junction box 10 with high flexibility can be obtained.

[0018]

As is clear from the above description, the electrical connection structure of the branch junction box of the present invention is such that the press-contact portion formed by the front substrate portion of the terminal is press-fitted into the notch of the bus bar from above in an orthogonal state. By fitting, the press contact portion is cold-connected to both end edges of the notch by line contact. Therefore, the conventional spring tongue of the terminal becomes unnecessary, and the width of the terminal can be reduced.
Since the pitch between adjacent terminals can be reduced, the size of the branch connection box and the connector can be reduced. Further, since there is no need to process the spring tongue piece on the terminal, the terminal can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention at the time of terminal fitting.

FIG. 2 is a perspective view of the terminal shown in FIG. 1 before fitting.

FIG. 3 is a plan view of a branch junction box.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a plan view of the connector.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a side view of the terminal.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a sectional view at the time of terminal fitting.

FIG. 10 is a cross-sectional view when a conventional terminal is fitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Branch connection box 13 Bus bar 13a Notch 14 Connector 15 Terminal 15b Pressure contact part 15d Rib

Claims (2)

(57) [Scope of request for utility model registration] 1. A plurality of bus bars are attached to a case of a branch connection box at predetermined intervals, and each of the bus bars is provided with a notch in a vertical direction. Wire connection terminals corresponding to the respective notches of the respective bus bars are attached, and the flat plate-shaped pressure contact portions formed of the front substrate portions of the respective terminals are placed in an orthogonal state from above or / and below the notches of the respective bus bars. An electrical connection structure for a branch connection box, wherein the electrical connection structure is connected by press-fitting. 2. An electrical connection structure for a branch junction box according to claim 1, wherein bent ribs are provided on both sides of the press contact portion of said terminal.