JPH0736432Y2 - Tab terminal extraction structure in electrical junction box - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a structure for taking out tab terminals connected to electrical parts such as fuses and relays and connectors in an electric junction box used for wiring an electric circuit of an automobile. Regarding

[Conventional technology]

BACKGROUND ART An electric connection box whose main purpose is to absorb a joint of a wire harness is conventionally shown in FIG.

In the figure, 1 is a case of an electric junction box, 2 is an insulating substrate,
Reference numeral 3 denotes a bus bar arranged on both surfaces of the insulating substrate 2 in parallel with the bus bar 3, and a covered electric wire W is press-fitted and fixed in a slot 4a of an electric wire pressure contact portion 4 formed at a lower end portion of the bus bar 3. In addition, a tab terminal 5 is formed on the upper end of the bus bar 3 and protrudes from the side edge of the insulating substrate 2 to form a 4-pole electrode terminal group
Are configured. The tab terminals 5 of this electrode terminal group A are all parallel to the insulating substrate 2, and are housed in the fuse cavity 6, the relay cavity 7, the connector housing 8, and the like.

However, like the electrode terminal group B, the two tab terminals 5 '
Is arranged at a right angle to the other two tab terminals 5, conventionally, the upper end of the bus bar 3'is bent at a right angle to the insulating substrate 2 side, and the tab terminal 5'is erected from the bent piece 3a '. In order to adjust the pitch between the tab terminals 5 and 5 ', a thick plate portion 2'is formed on the insulating substrate 2 as shown in FIGS. Therefore, when the insulating substrate 2 is plastic-molded, a sink mark or a warp is generated, the correction is unavoidable, and the covered electric wire W has to be bent and wired, which is a troublesome work.

[Problems to be solved by the device]

An object of the present invention is to provide a tab terminal take-out structure which eliminates the above drawbacks and can easily perform wiring work by using an insulating substrate having a uniform plate thickness.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the present invention, bus bars are arranged on both sides of an insulating substrate in parallel with the insulating substrate, and an end portion of the bus bar is projected from a side edge of the insulating substrate to form an insulating substrate. In an electrical connection box formed by forming an electrode terminal group composed of tab terminals parallel to each other and tab terminals at right angles, the tab terminals at right angles stand upright from the longitudinal edge of the bus bar in a direction opposite to the insulating substrate. It is characterized in that the bent piece is connected to a folded piece formed by folding the bent piece on the insulating substrate side.

Hereinafter, the above configuration will be specifically described with reference to the drawings showing an embodiment.

〔Example〕

FIG. 1 is a partially cutaway perspective view showing a typical example of the tab terminal lead-out structure of the present invention, FIG. 2 is a plan view of the tab terminal lead-out portion, and FIG. 3 is an enlarged perspective view of the tab terminal portion. Indicated. Further, the same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

In these figures, the tab terminals forming the four-pole electrode terminal group B are two tab terminals 5 parallel to the insulating substrate 2.
And two tab terminals 5'at a right angle, which is the same as the conventional one.

However, the tab terminal 5'orthogonal to the tab terminal 5 is bent in the opposite direction away from the insulating substrate 2 at the upper end of the bus bar 3'and the free end of the bent piece 3b is folded back to the insulating substrate 2 side. The turn-up piece 3c is formed so as to stand up and be coupled.

The folding width d of the folding piece 3c with respect to the bending piece 3b is determined according to the required pitch between the tab terminal 5'and the tab terminal 5. When the folding piece 3c and the tab terminal 5'are formed so as to project toward the back side of the bus bar 3'with respect to the bending piece 3b, they correspond to the projecting portion d'of the folding piece 3c. A groove 2a for positioning is recessed in the insulating substrate 2 and fitted therein.

[Action]

As is apparent from FIGS. 1 and 2, the tab terminal 5 '
Is formed by a bent piece 3b of the busbar 3'and a folded piece 3c of the busbar 3 ', the plate thickness t of the insulating substrate 2 is made uniform and the electrode terminal groups A and B are arranged as they are. By inserting the protruding portion d'of the tab terminal 5'into the groove 2a, it is also useful for positioning and fixing.

[Other Examples]

The formation of the tab terminal 5'in FIGS. 1 to 3 is an example in which the bent piece 3b is connected from the side edge of the bus bar 3'parallel to the insulating substrate 2.

FIG. 4 shows another example of forming the tab terminal 5 ', which is a bent piece 3b'.
Further, the folded piece 3c 'is formed by folding back the free end portion of the bus bar 3'as it is.

In addition, as shown in FIG. 5, the bent piece 3b 'and the folded piece 3c'.
The tab terminal 5'can also be formed by interposing a connecting piece 3d 'between the tab terminal 5'and.

In the case of the tab terminal 5'shown in FIGS. 4 and 5, the folding piece 3c '
It is preferable to provide the insulating substrate 2 with a notch 2b for positioning with respect to.

[Effect of device]

As described above, according to the present invention, the tab terminal, which is orthogonal to the insulating substrate, is bent from the longitudinal edge of the bus bar in the direction opposite to the insulating substrate, and the bent piece is folded back toward the insulating substrate. Since it is connected to one piece, the position of the tab terminal at a right angle can be easily changed by changing the folding position of the bending piece to the desired position and folding it back. Even if the shape is used, it is possible to easily match the position of the tab terminal at a right angle with the position of the conductor on the other side to which the tab terminal is connected.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an electrical junction box showing a typical example of a tab terminal take-out structure of the present invention, FIG. 2 is a plan view of the tab terminal take-out portion, and FIG. FIG. 4 is an enlarged perspective view, FIG. 4 and FIG. 5 are perspective views of a main part showing another example of forming tab terminals, respectively, and FIG. 6 is a partially cutaway perspective view of an electrical connection box showing a conventional tab terminal extraction structure. FIG. 7 is a plan view of the takeout portion of the tab terminal of the above. A, B: Electrode terminal group, 2 ... Insulating substrate, 3,3 '... Bus bar, 5,5' ... Tab terminal, 3b, 3b '... Bending piece, 3c, 3c'
...... Folded piece.

Claims (2)

[Scope of utility model registration request] 1. A tab perpendicular to a tab terminal parallel to the insulating substrate by disposing busbars on both sides of the insulating substrate in parallel with the insulating substrate and projecting end portions of the busbar from side edges of the insulating substrate. In an electric junction box formed by forming an electrode terminal group including terminals, a bent piece in which the tab terminal at a right angle is erected in a direction opposite to the insulating substrate from an edge portion in the longitudinal direction of the bus bar is formed by folding back to the insulating substrate side. A tab terminal take-out structure in an electric junction box, characterized in that the tab terminal is connected to the folded piece. 2. The tab terminal take-out structure according to claim 1, wherein the insulating substrate is provided with a groove or a recess for positioning the folded piece of the bus bar.