JP2001160433A - Short-circuit device for terminal board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with the insulation of the part projecting from a terminal board of short-circuit piece. SOLUTION: In a terminal board 1 in which more than one terminal 3 are arranged side by side on an insulator base 2, a groove 6 is installed which is made to go along with an array of terminal 3, and connecting parts 5a, 5a that are respectively connected to the terminals 3, 3 and a bridging part 5b of short-circuit piece 5 consisting of bridging part 5b that bridges these are bend in L shape against the connecting parts 5a, and this bridging part 5b is made to be housed in the groove 6. By this, the bridging part 5b does not protrude from the base 2, and the necessity disappears to put an insulation covering for this part, and the installing space of the terminal board 1 is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block having a plurality of terminals arranged side by side on an insulating base, and more particularly to a short-circuit device for short-circuiting the terminals.

[0002]

7 to 9 show a conventional apparatus. FIG. 7 is a perspective view of a terminal block and short-circuit pieces connected to the terminal block.
FIG. 9 is a perspective view of a terminal block to which a short-circuit piece is connected, and FIG. 9 is a cross-sectional view of FIG. In these figures, reference numeral 1 denotes a terminal block, and a plurality of terminals 3 are arranged side by side on an insulating base 2 made of a molded resin, and each terminal 3 is provided with a terminal screw 4. On the other hand, 5 is a short-circuiting piece made of a conductive plate material for short-circuiting between the terminals 3 and 3, and in the case of the drawing, a pair of left and right U-shaped connecting portions 5a connected to two adjacent terminals 3, respectively. And a bridging portion 5b bridging between the
An insulating coating 5 such as a PVC coating is applied to the bridging portion 5b.
c is given. As shown in FIG. 8, the short-circuit piece 5 is fastened to the terminal 3 by the terminal screw 4, and short-circuits between adjacent terminals 3.

[0003]

In the conventional device, since the bridging portion 5b of the short-circuiting piece 5 projects from the base 2, an insulating coating 5c is applied to this portion to protect the human body and prevent static electricity. The coating 5c causes a cost increase.
Accordingly, an object of the present invention is to reduce the cost by omitting the insulating coating of the shorting piece.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a plurality of connection terminals respectively connected to the terminals are provided on a base of the terminal block while grooves are provided along the arrangement of the terminals. And a bridging portion bridging between the connecting portions, and the bridging portion is provided with a short-circuit piece bent in an L-shape with respect to the connecting portion, and the short-circuiting piece connected to the terminal is provided. The bridging portion is to be accommodated in the groove (claim 1). According to the first aspect, since the bridge portion of the short-circuiting piece is housed in the groove of the base and is not exposed, it is not necessary to apply an insulating coating to this portion.

According to another aspect of the present invention, a groove is provided on the base of the terminal block along the arrangement of the terminals, and each terminal has an L-shaped tongue-shaped contact piece facing the groove. On the other hand, a short-circuiting piece bridging between the plurality of tongue-shaped pieces is provided, and the short-circuiting piece is pressed into the groove to be brought into contact with the contact piece (claim 2). According to the second aspect, the contact piece of the terminal which is a contact portion with the short-circuit piece is housed in the groove of the base, and the short-circuit piece bridging therebetween is press-fitted into the groove and is not exposed. There is no need to apply an insulating coating to them. According to the second aspect, the contact piece only needs to be press-fitted, and an operation such as tightening with a terminal screw becomes unnecessary. In claim 2, if one boss of the base and the short-circuiting piece is fitted into the other concave portion, the positioning of the short-circuiting piece is ensured (claim 3).

[0006]

1 to 3 show a first embodiment of the present invention. FIG. 1 is a perspective view of a terminal block and short-circuit pieces connected thereto, and FIG. 3 is a cross-sectional view of FIG. 2. Note that the same reference numerals are used for the portions corresponding to the conventional example. In these figures, for example, a short-circuit piece 5 punched from a copper plate
Is the same as the conventional one in the punched state, but the bridge portion 5b
Are bent in an L-shape with respect to the connecting portion 5a. On the other hand, a groove 6 is provided in the base 2 of the terminal block along the arrangement of the terminals 3. Therefore, in FIGS. 2 and 3, the short-circuit piece 5 connected to the terminal 3 by the terminal screw 4 is used.
The bridge portion 5b is housed in the groove 6. According to this configuration, the bridging portion 5b of the short-circuiting piece 5 is housed in the groove 6 and is not exposed, and the conventional insulating coating 5c (see FIG. 7) for the bridging portion 5b is unnecessary. In the above embodiment, an example in which two adjacent terminals are short-circuited is shown. However, it is similarly possible to short-circuit between distant terminals or short-circuit three or more terminals.

Next, FIGS. 4 to 6 show a second embodiment of the present invention. In these figures, the base 2 is provided with a groove 7 along the arrangement of the terminals 3, and each terminal 3
The tongue-shaped contact piece 3a is bent into an L shape so as to face the groove 7, and the tip of the contact piece 3a is embedded in the base 2. On the other hand, reference numeral 8 denotes a contact piece punched out in a strip shape from a copper plate, for example, having a length bridging between adjacent contact pieces 3a, 3a, and having the same width and plate thickness as the depth and the front-rear width of the groove 7. have. As shown in FIGS. 5 and 6, the short-circuit piece 8 is press-fitted until it abuts in the groove 7, and contacts the contact piece 3a to bridge between the adjacent terminals 3a. The short piece 8 press-fitted into the groove 7 has a boss 8a (FIG. 4) extruded at the center thereof fitted into the concave portion of the base 2, thereby performing left / right positioning and preventing upward removal. According to this configuration, the contact piece 3a is housed in the base, and the short-circuit piece 8 bridging the contact piece 3a is press-fitted into the groove, and is not exposed.
There is no need to apply an insulating coating to them. Further, according to the illustrated configuration, the short-circuit piece 8 only needs to be press-fitted, and the work of loosening or tightening the terminal screw 4 at the time of connection is unnecessary, and the number of work steps is reduced.

[0008]

According to the present invention, the insulating coating of the short-circuiting piece is not required, and the cost can be reduced accordingly.
Since the short-circuit piece does not protrude to the outside, the installation space for the terminal block can be reduced. According to the second aspect, the connection work of the short-circuit piece is simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view of a terminal block and short-circuit pieces connected to the terminal block according to an embodiment of the present invention.

FIG. 2 is a perspective view of a terminal block to which the short-circuit pieces of FIG. 1 are connected.

FIG. 3 is a cross-sectional view of FIG.

FIG. 4 is a perspective view of a terminal block and a short-circuiting piece connected to the terminal block according to another embodiment of the present invention.

FIG. 5 is a perspective view of a terminal block to which the short-circuit pieces of FIG. 4 are connected.

FIG. 6 is a cross-sectional view of FIG.

FIG. 7 is a perspective view of a terminal block showing a conventional example and a short-circuit piece connected to the terminal block.

8 is a perspective view of a terminal block to which the short-circuit pieces of FIG. 7 are connected.

FIG. 9 is a cross-sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal block 2 Base 3 Terminal 3a Contact piece 4 Terminal screw 5 Shorting piece 5a Connection part 5b Bridge 6 Groove 7 Groove 8 Shorting piece 8a Boss

Claims (3)

[Claims] 1. A terminal block short-circuiting device for short-circuiting between terminals of a terminal block in which a plurality of terminals are arranged side by side on an insulating base, wherein a groove is formed on the base along the arrangement of the terminals. While
It comprises a plurality of connecting portions respectively connected to the respective terminals and a bridging portion bridging between these connecting portions, and the bridging portion is provided with a short-circuit piece bent in an L shape with respect to the connecting portion. ,
A short circuit device for a terminal block, wherein the bridging portion of the short piece connected to the terminal is accommodated in the groove. 2. A terminal block short-circuiting device for short-circuiting between terminals of a terminal block in which a plurality of terminals are arranged side by side on an insulating base, wherein a groove is formed on the base along the arrangement of the terminals. And a tongue-shaped contact piece facing the groove is formed in an L-shape on each of the terminals, while a short-circuit piece is provided to bridge between the plurality of tongue-shaped pieces, and the short-circuit piece is placed in the groove. A short-circuiting device for a terminal block, which is press-fitted to contact the contact piece. 3. The terminal block short-circuiting device according to claim 2, wherein one of the bosses of the base and the short-circuiting piece is fitted into the other recess to position the short-circuiting piece.