JPH09306561A - Connection structure between bus bar and terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure between a bus bar and a terminal with which turn of the terminal is prevented at the time of connecting a bus bar to terminal with bolts and nuts and whose turn preventive means is not probably damaged when electric wires are laid out or dropped. SOLUTION: In a connection structure in which a flange 10a of a terminal 10 and a flange 25a of a bus bar 25 are overlaid are fastened by bolts 3 and nuts 11, a turn preventive piece 25c to prevent turn of the flange 10a of the terminal 10 by connecting the piece with flange 10a of the terminal 10 is projected in the flange 25a of the bus bar 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a busbar-terminal connection structure for connecting a power supply terminal to a power supply unit such as a block.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional example. 1 is a resin block such as an electric junction box, 2 is a block for connecting terminals 1
The flat surface 3 formed on the flat surface 3 is a bolt embedded in the flat surface 2, and 5 is a bus bar for power supply. The flange 5a of the bus bar 5 is placed on the flat surface 2 and the through hole 5b is formed.
Is fitted into the bolt 3. When connecting the power supply terminal 10 of the terminal of the power supply line 9 to the bus bar 5, the flange 10 a of the terminal 10 is superposed on the flange 5 a of the bus bar 5 while fitting the through hole 10 b of the terminal 10 into the bolt 3. To match. Then, the bus bar 5 and the terminal 10 are connected by tightening the nut 11 on the bolt 3.

FIG. 8 shows a conventional example in which a bus bar 15 of another circuit is further added and two bus bars 5, 15 and a terminal 10 are connected in the same manner as the technique described in Japanese Utility Model Laid-Open No. 4-29165. . Also in this case, the flange 15a is superposed on the previous bus bar 5 while fitting the through hole 15b formed in the flange 15a of the bus bar 15 of another circuit into the bolt 3. Then, the terminal 10 is superposed on it, and the nut 11 is fastened to the bolt 3 to connect the two bus bars 5 and 15 to the terminal 10.

By the way, conventionally, when tightening the nut 11, as shown in FIGS. 7 and 9, the tightening torque of the nut 11 causes the power supply terminal 10 to rotate as shown by an arrow. Further, in the case where the two bus bars 5 and 15 are overlapped as shown in FIG. 9, there is a problem that the position of the bus bar 15 is displaced.

Therefore, the detent of the terminal 10 and the bus bar 1
As shown in FIG. 10, a rib 18 is provided on the flat surface 2 of the block 1 so as to prevent the displacement of the rib 5.
By engaging the side edges of the terminal 10 and the bus bar 15 with 8, the terminal 10 is prevented from rotating and the bus bar 15 is positioned.

[0006]

However, when the ribs 18 are provided on the resin block 1 in a protruding manner, there is a possibility that the ribs 18 may be broken when the electric wires are routed or dropped.

In consideration of the above circumstances, the present invention can prevent the terminal from rotating when connecting the bus bar and the terminal with bolts and nuts, and when positioning another bus bar, position the bus bar. It is an object of the present invention to provide a connection structure between a bus bar and a terminal, which is capable of preventing the breakage of the detent when the electric wire is routed or dropped.

[0008]

According to a first aspect of the present invention, in a connection structure in which a flange of a terminal and a flange of a bus bar are overlapped with each other and fastened with bolts and nuts, the flange of the bus bar is engaged with the flange of the terminal. By doing so, a detent piece is provided so as to detent the flange of the terminal.

In this structure, since the detent piece is provided on the bus bar in a protruding manner, the detent piece does not break when the wire is routed or dropped.

According to a second aspect of the present invention, there is provided the busbar-terminal connecting structure according to the first aspect, wherein two or more flanges of the busbars are overlapped with each other, and the busbars are mutually connected by the engagement of the detent pieces. It is characterized in that it is stopped and positioned in the.

In this structure, the flange of another busbar is engaged with the protruding detent piece so that the busbars are mutually detented and positioned.

According to a third aspect of the present invention, there is provided the busbar-terminal connecting structure according to the second aspect, wherein the whirl-stop piece is formed as a cut-and-raised piece by providing a punched hole in a flange of the busbar. It is characterized in that the stopper piece can be engaged with the punching hole of the flange of another bus bar.

In this structure, the detent pieces are engaged with the punching holes, so that the bus bars are mutually detented and positioned.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1A is an exploded perspective view of the connection structure according to the first embodiment of the present invention. In this structure, the block 1 is not provided with a detent piece, but as shown in an enlarged view in FIG. 1B, the detent piece 25c is projected on the flange 25a of the metal bus bar 25 having the through hole 25b. I have set up.
The bus bar 25 itself is set so as not to rotate by being attached to the block 3, and by engaging the straight side edge of the terminal 10 with the detent piece 25c as shown in FIG. The terminal 10 is connected to the bus bar 5 with bolts 3 and nuts 11 in a state where the terminal 10 is not rotated. Other configurations are the same as those in FIGS. 6 and 7.
Here, the detent piece 25c is formed as an oblique cut-and-raised piece by providing a punched hole 25d in the flange 25a, and when the terminal 10 is fitted into the bolt 3, the side edge of the rectangular flange 10a of the terminal 10 is just formed. Engages with the inner edge of the detent piece 25c.

In the case of this structure, since the detent piece 25c is formed not on the resin block 1 but on the metal bus bar 25, the detent piece 25 is arranged at the time of wire installation or dropping.
There is no fear of damaging c, and the terminal 10 can be reliably prevented from rotating.

FIG. 3 is an exploded perspective view of a connection structure according to a second embodiment of the present invention, FIGS. 4 (a) and 4 (b) are perspective views showing a state when the structure is fastened, and FIG. It is a figure.

In this structure, as shown in FIG.
On top of the lower busbar 25, a busbar 35 of another circuit is further provided.
Are superimposed. Through hole 35 of bus bar 35 of another circuit
Similarly, the b-stop flange 35a is formed with a rotation stopping piece 35c together with a punching hole 35d. Then, the flange 35a of the bus bar 35 of another circuit is attached to the previous bus bar 25
As shown in FIG. 5, the rotation preventing piece 25c of the lower bus bar 35 is fitted into the punching hole 35d of the upper bus bar 35 when superposed on the upper bus bar 3 as shown in FIG.
Positioning of 5 and rotation stop are performed. Further, the side edge of the terminal 10 is engaged with a portion where the anti-rotation piece 35c of the upper bus bar 35 and the anti-rotation piece 25c of the lower bus bar 25 are engaged, and in that state, the two bus bars 25, 35 are The terminal 10 is connected by a bolt 3 and a nut 11. In this case, the terminal 10 has two detent pieces 25c,
Since it hits 35c, it is stopped by strong force.

The number of bus bars 25 and 35 to be stacked may be more than three, and in that case, the detent pieces 25c and 35c may be similarly provided. Further, the shape and the like of the detent pieces 25c and 35c can be arbitrarily selected.

[0020]

As described above, according to the first aspect of the present invention, the terminal stoppers are provided on the metal bus bar so that the terminal stoppers are provided when the electric wires are routed or dropped. It is possible to securely prevent the terminal from rotating without breaking. Therefore, workability at the time of assembling and tightening the bolts and nuts is improved.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, even when a plurality of bus bars are connected, the terminals and the bus bars can be reliably prevented from rotating. The bus bar can be positioned.

According to the third aspect of the invention, in addition to the effect of the second aspect of the invention, the detent and the positioning of the busbar can be easily performed only by engaging the detent piece with the punching hole.

[Brief description of drawings]

1A and 1B show a first embodiment of the present invention, FIG. 1A is an exploded perspective view, and FIG. 1B is an enlarged perspective view of a flange of a bus bar.

FIG. 2 is a perspective view showing a fastened state of the first embodiment of the present invention.

FIG. 3 is an exploded perspective view of the first embodiment of the present invention.

FIG. 4 shows a fastening state of the second embodiment of the present invention,
(A) is an overall perspective view, (b) is an enlarged perspective view of the overlapping portion of the bus bar flange.

5 is a cross-sectional view of a main part of FIG.

FIG. 6 is an exploded perspective view of a conventional example.

7 is a perspective view showing a problem at the time of fastening the conventional example of FIG.

FIG. 8 is an exploded perspective view of another conventional example.

9 is a perspective view showing a problem at the time of fastening the conventional example of FIG.

FIG. 10 is a perspective view showing a state of another conventional example at the time of fastening.

[Explanation of symbols]

 3 Bolts 10 Terminals 10a Flange 11 Nuts 25, 35 Busbars 25a, 35a Flange 25c, 35c Anti-rotation piece 25d, 35d Launch hole

Claims (3)

[Claims] 1. A connection structure in which a flange of a terminal and a flange of a bus bar are overlapped and fastened by bolts and nuts, and the flange of the bus bar is engaged with the flange of the terminal to prevent the flange of the terminal from rotating. Connection structure of bus bar and terminal, characterized by protruding anti-rotation pieces. 2. The connection structure of a bus bar and a terminal according to claim 1, wherein two or more flanges of the bus bar are overlapped with each other, and the bus bar is mutually locked and positioned by the engagement of the detent pieces. The busbar and terminal connection structure is characterized by being. 3. The busbar-terminal connecting structure according to claim 2, wherein the detent piece is formed as a cut-and-raised piece by providing a punched hole in a flange of the busbar, and the detent piece is formed separately. A structure for connecting a bus bar and a terminal, wherein the bus bar and the terminal can be engaged with a punched hole of a flange of the bus bar.