JP2752021B2 - Branch structure on both sides and fixing structure of branch terminal and insulating board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box used for interconnection of wire harnesses, and more particularly to a structure of a double-sided joint-shaped branch terminal suitable for assembling a branch junction box, and a double-sided joint-shaped branch terminal.
Bifurcated terminals that can be made from bifurcated terminals or
The present invention relates to a structure for fixing one branch terminal to an insulating substrate.

[0002]

2. Description of the Related Art Conventionally, as a circuit component of an electric junction box, a bus bar formed by punching a conductive metal plate is often used. The bus bar has many advantages, such as easy formation of a circuit pattern, and the formation of an arbitrary number of tabs (connector terminals) from the end or middle of the bus bar. However, when a plurality of busbars are simultaneously formed from one metal plate, the punching yield is low and the arrangement density of the busbars with respect to the insulating substrate is increased due to interference between mutual patterns and developed tabs. It was difficult.

Further, as means for positioning and fixing a bus bar to an insulating substrate, there have been conventionally known ones as shown in FIGS. FIG. 6 shows that the tab b of the bus bar a is inserted into and fixed to the long hole d of the insulating substrate c. The protrusions e and e are provided on the inner edges of the long hole d opposite to each other. Slits f, f are provided to impart flexibility to the edge of the long hole d, and both sides of the tab b are elastically sandwiched and fixed by the convex portions e, e (Japanese Utility Model Publication No. 62-19048). No.).
FIG. 7 shows a structure in which wedge-shaped projections g are provided on both sides of the base of the tab b, and the tabs b are pressed into and fixed to the elongated holes d 'of the insulating substrate c.

However, in the fixing structure shown in FIG. 6, when the tab b is inserted in an inclined posture, the tab b is held without being corrected, so that the centering position of the tip of the tab is largely displaced or the projection e is damaged. And it has a drawback
Since the slits f are provided on both sides of the substrate, the pitch between the long holes d must be increased, and the arrangement density of the tabs decreases, and the insulating substrate c increases in size. In addition, in the case of FIG. 7, a large force is required for press-fitting the individual tabs b into the long holes d '. In addition, a crack or breakage occurs around the long holes d' due to excessive press-fitting of the projections g. Then, there was a problem that the tab b was loose.

[0005]

[SUMMARY OF THE INVENTION The present invention has been made in view of the problems described above, it is possible tab high density formation as connector terminals on both sides of any number of poles
Alternatively, it is an object of the present invention to be able to create a one-sided branch terminal and to easily and reliably fix the branch terminal to the insulating substrate.

[0006]

In order to achieve the above-mentioned object, according to the present invention, a double-sided chain-shaped branch terminal is provided with a plurality of tabs on one side edge of a strip-shaped common substrate. one side chain branched terminals formed by projecting at intervals, Ri Na form with the left-right symmetric through connecting provided on other side edge of the common substrate, and further comprising a common substrate of Article 2 I do.
Further, the fixing structure between the branch terminal and the insulating substrate may be configured such that a plurality of tabs are provided on one side green of the strip-shaped common substrate.
One-side branch terminal protruding at predetermined intervals or one side
Both ends of the branch terminal are connected via the other side green of the branch terminal
A structure for fixing a child to absolute green substrate, a slot for holding the common substrate of the branch terminal to the insulating substrate provided on one or both of the opposite inner walls of the slot, adjacent the branch terminal tab of the rib positioned projecting from the middle, characterized in that sandwich the common substrate of the branch terminal between the rib and the slot inner wall or between the ribs and the rib.

[0007]

The double-sided chain-shaped branch terminal becomes a single-sided chain-shaped branch terminal by cutting and separating a connecting portion, and thus becomes a branch terminal having an arbitrary number of poles by cutting and separating the common substrate. Therefore, by changing the cut / separated portion, a double-sided or single-sided branch terminal having an arbitrary number of poles (the number of tabs) can be obtained from a single type of double-sided chain-shaped branch terminal. In addition, when fixing the branch terminal, if the common board is pressed into the slot of the insulating board, it is sandwiched by the ribs in the slot, so the work is extremely simple, unlike the conventional structure of fixing individual tabs In addition, there is no need to worry about bending the tab at the time of fixing or damaging the insulating substrate.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference symbol A denotes a double-sided chain-shaped branch terminal, which is formed by stamping a single conductive metal plate.
The sides chained branched terminal A, one side chain-branched terminal A ₁ in juxtaposed a plurality of tabs 2 in a comb shape at a predetermined pitch in one side edge of the common substrate 1 of the strip corresponding to the bus bar a in FIG. 6 The one-side chained branch terminals A ₁ , A ₁ are symmetrical via a plurality of joints 3 provided at appropriate intervals. Of course, the width and length of the tab 2 and the material of the conductive metal plate are selected according to the required specifications such as the current capacity and size of the connector.

FIG. 2 shows a double-sided branch terminal B and a single-sided branch terminal C obtained from the double-sided chain-like branch terminal A. That is,
Any portion having the tabs 2 on both sides or one side by cutting and separating the tabs 2, the common substrate 1 or the joints 3 at desired positions in the double-sided chain branch terminal A, or by cutting and removing the unused tabs 2 Branch terminals with the number of poles can be created. The two-sided chained branch terminal A has a simple configuration in which the two one-sided chained branch terminals A ₁ and A ₁ are symmetrical, and the common substrate 1 for connecting a plurality of tabs 2 has a simple shape. In forming a blank from a single conductive metal plate, it can be formed with a high blanking yield without interfering with the conventional bus bar pattern formation.

FIGS. 3A to 3C show a fixing structure of the one-side branch terminal C and the insulating substrate 4 obtained as described above. The insulating substrate 4 is provided with a bottomed (5a) slot 5 having a width sufficiently larger than the thickness of the common substrate 1 as shown in FIG. Protrude. Opposing ribs 6,
The gap between 6 is, of course, sufficiently smaller than the thickness of the common substrate 1. Each of the ribs 6 is provided so as to be located at an intermediate position between the adjacent tabs 2 and 2 when the common substrate 1 is inserted into the slot 5.

Then, pressure is applied to the slot 5 of the insulating substrate 4 until the common substrate 1 of the one-side branch terminal C is attached to the slot bottom 5a. As a result, the common substrate 1 is sandwiched and fixed between the ribs 6 and 6 on both sides, so that the one-side branch terminal C is also fixed in a stable state. When press-fitting and fixing the one-side branch terminal C, the tab 2 does not come into contact with the rib 6, so that there is no problem such as bending, and the operation is extremely simple unlike the conventional structure in which the plurality of tabs 2 are individually fixed. .

FIG. 4 is an exploded perspective view of a branch junction box D to which the above-described fixing structure is applied, and FIG. 5 is a cross-sectional view thereof. In the figure, 7 is an upper case made of synthetic resin, 8 is a case body, 9
Is a lower case, and both cases 7 and 9 are provided with an external connection connector 10 for connecting a connector of a wire harness terminal (not shown). In addition, 7a, 9
Reference numeral a denotes a detent and a locking claw that constitute a locking means for the two cases 7 and 9.

The case body 8 has an inner bottom 8b as an insulating substrate formed in a frame wall 8a, and a branch terminal holder 11 corresponding to the external connection connector 10 of the two cases 7, 9 is formed on the inner bottom 8b. Is formed as a block. Each branch terminal holder 11, according to the specifications that will be required in this branch connection box D, two slots 5, 5 'are provided. The slot 5 has the bottom (5a) as described above, and press-fits and fixes the one-side branch terminal C for the upper case 7. The slot 5 'is vertically penetrated so that two
One of the strip common substrates 1 can be press-fitted and fixed. In addition, the lower case 9 includes the external connection connectors 1.
A slot 5 is integrally formed at the bottom of the lower case 0 so that the other common substrate 1 of the one-side branch terminal C and the two-side branch terminal B for the lower case 9 can be press-fitted and fixed.

First, in the lower case 9, the one-side branch terminal C or the two-side branch terminal B is connected to the slot in the lower case 9 for each row of the external connection connector 10.
5, a case body 8 having an insole 8 b as an insulating substrate is placed thereon, and then a one-sided branch terminal C for the upper case 7 is inserted into the slot 5 of the branch terminal holder 11. By pressing the upper case 7 from above and pressing strongly, the posture and position of each branch terminal B and C are correctly corrected.
And press-fitted. That is, both-side branch terminal B
5, the tabs 2 on both sides protrude into the connector 10 through the tab insertion holes 10a of the upper and lower external connection connectors 10 as shown in FIG. And, both-side branch terminal B
The upper and lower common substrates 1, 1 are sandwiched on both front and rear sides by a rib 6 in a case body 8 and a rib 6 'of a lower case 9, and the common substrates 1, 1
It is sandwiched from above and below by the 10 bottom walls. Thereby, the both-side branch terminal B is easily and reliably fixed, and the positioning of each tab 2 is performed.

Further, one branch terminal C which is attached to the lower case 9 protrudes a slot 5 or al tabs 2 in the same manner as described above for external connection connector 10, when placed over the case body 8 in this state, therein Since the bottom 8b pushes down the common substrate 1, the posture and the position are correctly corrected, and the front and rear surfaces of the common substrate 1 are sandwiched by the ribs 6 'in the lower case 9. The same applies to the one-side chain-like branch terminal mounted on the upper case 7.

In the above description, the ribs 6 or 6 'are provided on both sides of the opposing inner walls of the slots 5, 5' for holding the common substrate 1 of the two types of branch terminals B and C. It may be provided only for.

[0017]

As described above, according to the present invention , both sides
According to Article branch terminal, from one of both sides chained Article branch terminal,
Both sides or one-side branch terminals with an arbitrary number of poles (number of tabs) can be formed by cutting and separating common boards and ties, and cutting and removing tabs.
Obtained easily . The double-sided chain branch terminals can be formed by punching at a high density without interference of the common substrate and the tab, and the punching yield is also improved. In addition, the branch terminal of the present invention
The fixed structure with the green board is one-side branch terminal and both-side branch
A structure in which terminals are fixed to an insulating substrate using the same insertion and pressing methods
Der is, by inserting the common substrate into the slot on the insulating substrate
By pressing , the insertion position and insertion posture are corrected,
Since the common substrate is sandwiched between the inner wall of the slot and the ribs or between the ribs, the operation is extremely simple, unlike the conventional structure in which individual tabs are fixed, and the ribs are in contact with the tabs.
Because it is in a position where it does not touch , the tab may be bent when fixed,
There is no fear that the insulating substrate is damaged, and the quality is ensured .

[Brief description of the drawings]

FIG. 1 is a perspective view of a double-sided chain branch terminal showing one embodiment of the present invention.

FIGS. 2A and 2B are perspective views of a double-sided branch terminal and a single-sided branch terminal obtained from the double-sided branched terminal of FIG. 1, respectively.

3 (A) to 3 (C) show a fixing structure of a one-side branch terminal and an insulating substrate, respectively, wherein (A) is a perspective view of a separated state, (B) is a perspective view of a fixed state, (C) is a sectional view of the fixed state.

FIG. 4 is an exploded perspective view of a branch connection box to which the branch terminal fixing structure of the present invention is applied.

FIG. 5 is a sectional view of the assembled state of FIG. 4;

FIG. 6 is an explanatory view of a conventional structure for fixing a bus bar and an insulating substrate.

FIG. 7 is an explanatory view showing another example of a conventional fixing structure between a bus bar and an insulating substrate.

[Explanation of symbols]

 Reference Signs List A Double-sided branch terminal B Double-sided branch terminal C Single-sided branch terminal 1 Common substrate 2 Tab 3 Connecting 4 Insulating substrate 5, 5 'Slot 6, 6' Rib 7 Upper case 8 Case body 9 Lower case

Claims (2)

(57) [Claims] 1. A one-side chain-like branch terminal having a large number of tabs protruding at a predetermined interval from one side edge of a strip-shaped common substrate, and having a left-right symmetrical shape via a link provided on the other side edge of the common substrate. Ri Na form with the both sides chained branched terminal, characterized in that it comprises a common substrate 2 Article. 2. A one- sided branch terminal comprising a plurality of tabs protruding at a predetermined interval from one side edge of a strip-shaped common substrate , or one sided terminal .
Bifurcated ends of both sides where the other side of the branch terminal is connected via a connection
A structure for fixing a child to an insulating substrate, a slot for holding the common substrate on the insulating substrate provided on one or both of the opposite inner walls of the slot,
A rib located in the middle of the tab adjacent to the branch terminal is projected, and a common substrate of the branch terminal is sandwiched between the rib and the inner wall of the slot or between the rib and the rib. Fixed structure.