JP2002078153A - Relay terminal assembling structure for electric junction box and assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relay terminal assembling structure for an electric junction box and an assembling method which allow simplifying an assembly and easily assembling a relay terminal. SOLUTION: A wiring board 4 containing a bus-bar circuit 9 punched and formed in a desired circuit, and formed by electing a tub terminal 8 is used for an electric junction box covered with an upper cover 23. The relay terminal assembling structure for the electric junction box is to assemble the relay terminal 21 placed in the tab terminal 8 to connect the tub terminal 8 with a mated terminal. Temporary locking means 24 to temporarily lock the relay terminal 21 in advance is contained in a tub terminal housing 22 disposed on the upper cover 23 to accommodate a tub terminal part. The temporary locking means 24 is comprised of a groove 25 placed close to the tub terminal housing 22 and a temporarily locked projection 26 disposed in the relay terminal and inserted in the groove 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure and a method for assembling a relay terminal to an electric connection box for assembling a relay terminal for connecting a tab terminal portion of a bus bar circuit body and a mating terminal.

[0002]

2. Description of the Related Art FIG. In the electric junction box 1, a wiring board 4 is accommodated between an upper cover 2 and an under cover 3. The upper cover 2 has a fuse mounting portion 5 on which a fuse and a relay are mounted, and a relay mounting portion 7 formed on the upper surface 6 side. Inside these fuse mounting part 5 and relay mounting part 7,
An insertion space into which a fuse or a relay is inserted is provided, and the tab terminal portion 8 of the wiring board 4 is inserted.

The wiring board 4 is formed by a bus bar circuit body 9 formed by stamping a conductive plate material into a desired circuit, and an insulating plate 10. The busbar circuit body 9 is formed upright from the main body 11 constituting a circuit portion,
As described above, the tab terminal 8 is formed in the insertion space. As shown in FIG. 6, a relay terminal 12 is previously mounted on the tab terminal portion 8 inserted into the insertion space for connection with a mating terminal (a terminal portion of a fuse or a relay).

[0004] In order to assemble such an electrical junction box 1, the wiring board 4 is placed on the under cover 3 and fixed with the relay terminal 12 previously mounted on the tab terminal portion 8 of the wiring board 4. . Next, the upper cover 2 is put on the upper part of the wiring board 4. At this time, the relay terminal 12 is inserted in a state where it is positioned in a preset insertion space, and is assembled to the fuse mounting section 5 and the relay mounting section 7. And
By fixing the upper cover 2 and the under cover 3, the wiring board 4 is assembled between them.

[0005]

However, when assembling the electric junction box 1, the relay terminals 12 are attached to the tab terminals 8 of the wiring board 4 one by one using an assembling machine. The box assembling line has become larger, increasing the manufacturing cost. Also, if the relay terminal 12 is displaced, the relay terminal 1 may be removed when the upper cover 2 is covered.
There is a possibility that the upper end of the second member and the wall of the upper cover forming the insertion space may come into contact with each other. For this reason, the work of covering the upper cover in a state where the relay terminal is assembled to the tab terminal portion requires attention, and the assembling is troublesome.

Accordingly, the present invention provides a structure and a method for assembling a relay terminal to an electric junction box, which can simplify the line for assembling the electric junction box and can easily assemble the relay terminals. With the goal.

[0007]

In order to achieve the above object, according to the present invention, there is provided a wiring board having a bus bar circuit body formed by stamping a desired circuit and having tab terminal portions formed upright. The relay terminal is attached to the tab terminal portion, and the relay terminal is mounted on the tab terminal portion to connect the relay terminal to the mating terminal. The tab terminal accommodating portion provided on the cover and accommodating the tab terminal portion has temporary locking means for temporarily locking the relay terminal in advance.

In this relay terminal assembly structure, the relay terminal is temporarily locked in advance in the tab terminal receiving portion of the upper cover instead of the tab terminal portion of the bus bar circuit body, and the wiring board is stored between the tab terminal portion and the under cover. In doing so, the relay terminal can be easily attached to the tab terminal portion by covering the upper cover on the wiring board. In this case, since the assembling line for attaching the relay terminals to the tab terminal portions one by one is not required in the assembly line of the electric connection box, the assembly line is simplified, and the relay terminals are previously attached to the upper cover. Only need to be temporarily locked, so that the relay terminals can be easily and collectively assembled to the tab terminal portions in the step of covering the upper cover.

According to a second aspect of the present invention, there is provided the relay terminal assembling structure to the electric connection box according to the first aspect, wherein the temporary locking means includes a groove provided near the tab terminal accommodating portion. ,
A temporary locking projection provided on the relay terminal and pressed into the groove when the tab terminal accommodating portion of the relay terminal is inserted.

In this relay terminal assembling structure, when the relay terminal is inserted into the tab terminal accommodating portion, the temporary locking projection is press-fitted into the groove, so that the relay terminal is temporarily engaged with the tab terminal accommodating portion. In this state, the relay terminal is attached to the tab terminal portion by covering the wiring board with the upper cover.

According to a third aspect of the present invention, there is provided an electric connection box in which a wiring board having a bus bar circuit body formed by stamping a desired circuit and having a tab terminal portion standing upright is covered by an upper cover, A method of assembling a relay terminal to an electric junction box, wherein the tab terminal is mounted on the upper cover and the relay terminal is connected to the mating terminal, the tab being provided on the upper cover and receiving the tab terminal. After the relay terminal is temporarily locked in the terminal accommodating portion, the upper cover is put on the wiring board, and the relay terminal is mounted on the tab terminal portion and fully locked.

In this relay terminal assembling method, the relay terminal is temporarily locked in the tab terminal receiving portion of the upper cover in advance, and the relay terminal is mounted on the tab terminal portion by covering the wiring board with the upper cover.

According to a fourth aspect of the present invention, there is provided the relay terminal assembling method according to the third aspect of the present invention, wherein when the wiring board is covered with an upper cover, the inside of the groove is close to the tab terminal accommodating section. The temporary locking projection of the relay terminal is press-fitted into the relay terminal.

In this relay terminal assembling method, when the relay terminal is inserted into the tab terminal receiving portion of the upper cover, the temporary locking projection is pressed into the groove, so that the relay terminal is temporarily locked into the tab terminal receiving portion. Is done.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a structure and a method for assembling a relay terminal to an electric junction box according to the present invention will be described. FIG. 1A shows a relay terminal 21 and the relay terminal 2.
FIG. 1B is a transparent perspective view showing the tab terminal accommodating portion 22 in a state where 1 is temporarily locked, and FIG. 1B is a cross-sectional view taken along the line bb in FIG. 2A and 2B are a cross-sectional view and a top view showing the relay terminal 21. FIG. 3 shows an upper cover 23 of the electric junction box to which the present invention is applied, wherein (a) is a top view and (b) is a bottom view.

In the relay terminal assembling structure of the present embodiment, the relay terminals 21 are provided in the tab terminal receiving portions 22 of the upper cover 23.
Is temporarily locked in advance. As shown in FIGS. 1A and 1B, the temporary locking means 24 includes a groove 25 provided in the vicinity of the tab terminal accommodating portion 22 and a tab provided on the relay terminal 21. Temporary locking projection 26 press-fit into groove 25 when terminal receiving portion 22 is inserted
Consists of

As shown in FIGS. 1 (a), 2 (a) and 2 (b), the relay terminal 21 used in the present embodiment is formed by punching a conductive plate material in an expanded state and then bending it. Have been. The overall size is slightly smaller than the inside of the tab terminal accommodating portion 22 of the upper cover (see FIG. 3) 23, and is formed integrally with the insertion tube portion 27 having both sides opened. Elastic contact piece 28,
The temporary locking projection 26 is formed integrally with the outer periphery of the insertion cylinder 27. In addition, this temporary locking projection 2
6 may use a projection for relay terminal selection provided in the relay terminal in advance.

The resilient contact piece 28 extends from one wall portion 29 of the insertion tube portion 27 and is bent inwardly. 29 and a tab terminal portion contact portion 31 bent toward the space between the tab terminal portion 31 and the tab terminal portion contact portion 31. And the tab terminal part 8
Is inserted from the opening 32 side of the insertion tube portion 27 and is inserted between the tab terminal portion contact portion 31 and the wall portion 29, and the other terminal (a terminal portion of a fuse or a relay) is inserted into the opening 3 of the insertion tube portion 27.
3 and is inserted between the wall portion 34 facing the wall portion 29 and the mating terminal contact portion 30.

On the other hand, the tab terminal accommodating portions 22 to which the relay terminals 21 are temporarily locked are shown in FIGS. 3A, 3B and 4.
As shown in (a) and (b), a mating terminal insertion opening 36 into which a mating terminal (a terminal portion of a fuse or a relay) is inserted is formed on the upper surface 35 side of the upper cover 23, and a relay is formed on the lower surface side. A relay terminal insertion opening 37 into which the terminal 21 is inserted is formed. The space between the mating terminal insertion opening 36 and the relay terminal insertion opening 37 is a housing space 38 in which the relay terminal 21 is housed. The groove 25 is formed on one side of the space 38. The groove 25 has a lower side that is gradually widened and formed with inclined slopes 39 and 39. The upper side is formed to have a width slightly shorter than the thickness of the temporary locking projection 26 (see FIG. 1B), so that the temporary locking projection 26 can be press-fitted.

Next, an assembling method will be described.

The relay terminal 21 is temporarily locked in the tab terminal receiving portion 22 of the upper cover 23 in advance. In this case, when the relay terminal 21 is inserted into the tab terminal accommodating portion 22, the temporary locking projection 26 is press-fitted into the groove 25, whereby the relay terminal 21 is temporarily locked in the tab terminal accommodating portion 22. . At this time, even if the position of the relay terminal 21 is slightly deviated from the position of the tab terminal accommodating portion 22, the temporary locking projection 26 is guided by the picking slope 39, so that the relay terminal 21 is moved to the tab terminal accommodating portion 22. It can be easily inserted inside.

When the upper cover 23 in this state is put on the wiring board (see FIG. 5) on the under cover, the relay terminals 2
The tab terminal portion 8 of the bus bar circuit body 9 is inserted from the opening 32 of the first, and the relay terminal 21 is fully engaged with the tab terminal portion 8.

According to the present embodiment, the relay terminal 21 is temporarily locked in advance in the tab terminal receiving portion 22 of the upper cover 23 instead of the tab terminal portion 8 of the bus bar circuit body 9, and the wiring board 4 is undercovered. When the tab terminal portion 8 is stored between the wiring board 4 and the upper cover 23,
The relay terminal 21 can be easily mounted on the terminal.

In this case, the assembly line of the electric junction box
Since an assembling machine for attaching the relay terminals 21 to the tab terminal portions 8 one by one becomes unnecessary, the assembly line is simplified, and only the relay terminals 21 are temporarily locked to the upper cover 23 in advance. Since it is good, the relay terminal 21 can be easily and collectively assembled to the tab terminal portion 8 in the step of covering the upper cover 23.

The relay terminal 21 is connected to the upper cover 23.
Even if the relay terminal 21 is temporarily locked, even if the relay terminal 21 is displaced with respect to the tab terminal accommodating portion 22, the temporary locking protrusion 26 is guided by the inclined surface 39. Temporary locking can be reliably performed in the portion 22.

[0026]

As described above, according to the first aspect of the present invention, the relay terminal is temporarily fixed in advance to the tab terminal receiving portion of the upper cover instead of the tab terminal portion of the bus bar circuit body, and When the cable is stored between the under cover and the under cover, the relay terminal can be easily attached to the tab terminal portion by covering the upper cover on the wiring board.

In this case, since the assembling line does not require an assembling machine for attaching the relay terminals to the tab terminal portions one by one, the assembly line is simplified, and the relay terminals are previously provided on the upper cover. Since it is only necessary to temporarily lock the relay terminal, the relay terminal can be easily assembled to the tab terminal portion in the step of covering the upper cover.

According to the second aspect of the present invention, when the relay terminal is inserted into the tab terminal accommodating portion, the temporary locking projection is press-fitted into the groove, thereby temporarily interlocking the relay terminal with the tab terminal accommodating portion.
In this state, by putting the upper cover on the wiring board,
The relay terminal can easily be fully locked to the tab terminal portion.

According to the third aspect of the present invention, the relay terminal is temporarily locked in the tab terminal accommodating portion of the upper cover in advance,
By covering the wiring board with the upper cover, the relay terminal can be easily assembled to the tab terminal portion.

According to the fourth aspect of the present invention, when the relay terminal is inserted into the tab terminal receiving portion of the upper cover, the temporary locking projection is pressed into the groove, so that the relay terminal can be easily inserted into the tab terminal receiving portion. Can be temporarily locked.

[Brief description of the drawings]

1A and 1B show a relay terminal and a tab terminal accommodating portion where the relay terminal is temporarily locked, wherein FIG. 1A is a transparent perspective view, and FIG.
FIG. 4 is a cross-sectional view taken along line bb of FIG.

FIG. 2 shows a relay terminal, (a) is a sectional view showing the inside,
(B) is a plan view.

FIG. 3 shows an upper cover, (a) is a plan view,
(B) is a back view.

FIG. 4 shows a tab terminal receiving portion of an upper cover;
(A) is a sectional view, and (b) is an enlarged sectional view of a part of (a).

FIG. 5 is an exploded perspective view showing the electric connection box.

FIG. 6 is a perspective view showing a conventional relay terminal and a tab terminal portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 ... Wiring board 8 ... Tab terminal part 9 ... Bus bar circuit body 21 ... Relay terminal 22 ... Tab terminal accommodating part 23 ... Upper cover 24 ... Temporary locking means 25 ... Groove part 26 ... Temporary locking protrusion

Claims (4)

[Claims] 1. A wiring board having a bus bar circuit body stamped and formed in a desired circuit and having a tab terminal portion standing upright is used for an electric connection box covered with an upper cover, and is mounted on the tab terminal portion. A relay terminal assembling structure to an electric connection box for assembling a relay terminal for connecting the tab terminal portion and the mating terminal, wherein the tab terminal receiving portion is provided on the upper cover and receives the tab terminal portion. A structure for assembling a relay terminal to an electric junction box, comprising temporary locking means for temporarily locking the relay terminal in advance. 2. The relay terminal assembling structure to an electric junction box according to claim 1, wherein said temporary locking means is provided in a groove provided close to said tab terminal receiving portion, and in said relay terminal. And a temporary locking projection which is provided and press-fitted into the groove when the tab terminal accommodating portion of the relay terminal is inserted. 3. A wiring board having a bus bar circuit body stamped and formed in a desired circuit and having tab terminals formed upright is used for an electric connection box covered with an upper cover, and is mounted on the tab terminals. A method of assembling a relay terminal to an electric junction box for assembling a relay terminal that connects the tab terminal portion and a mating terminal, wherein the relay terminal is provided on the upper cover and is connected to a tab terminal receiving portion that receives the tab terminal portion. A method for assembling a relay terminal to an electric junction box, comprising: temporarily locking the terminal, covering the wiring board with the upper cover, mounting the relay terminal on the tab terminal portion, and fully locking the terminal. 4. The method of assembling a relay terminal to an electrical junction box according to claim 3, wherein when the wiring board is covered with an upper cover, the provision of the relay terminal is temporarily provided in a groove adjacent to the tab terminal accommodating portion. A method for assembling a relay terminal to an electric junction box, wherein a locking projection is press-fitted.