JPS6134700Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to the structure of a quick-connect terminal block used for connecting electric wires.

[Background of the idea]

Conventionally known terminal blocks include those that connect electric wires using a screw fastening method and those that use a quick connection method that uses a locking piece. Incidentally, when used in general electric equipment, a ground terminal is often required, and devices provided with a ground terminal are also known, as shown in, for example, Japanese Utility Model Publication No. 53-8946. By the way, this ground terminal is not necessary for all electrical equipment that uses this type of terminal block, so if it is unnecessary, an expensive terminal block will be used. Of course, it is possible to make a terminal block without a ground terminal, but this is not necessarily economical since two types of terminal blocks must be managed.

Also, from the user's perspective, for example, the primary side,
If three wire insertion slots are lined up on the next side, there is a problem that it is easy to mistake which one is the ground terminal. Of course, even if there is a display, the terminal block body is generally made of synthetic resin, so the display engraved on its surface cannot be seen unless you look very carefully, especially if it is a quick-connect type. Even so, replacing the wires is troublesome and time-consuming.

[Purpose of invention]

Considering the above circumstances, it is a good idea to configure this type of terminal block with a ground terminal as inexpensively as possible, and it is preferable to configure the terminal block so that the position of the ground terminal is obvious at a glance.

[Summary of the idea]

The quick connection terminal block with a grounding terminal according to the present invention has the grounding wire insertion port and the grounding wire insertion port located at a position that avoids the row connecting each wire insertion port on the secondary side, and each of the primary side The terminal block is installed in a position that lines up with the row that connects the wire insertion ports, making the overall arrangement of the wire insertion ports asymmetrical, and when using this terminal block to ground an electrical device, simply use this terminal block on the wall of the device. It is unique in that it is configured to allow ground connection.

[Example of idea]

The present invention will be explained using the embodiments shown in FIGS. 1 to 6. In the figure, reference numeral 1 denotes a substantially box-shaped terminal block body, which is molded from synthetic resin or the like, and is composed of a base body 2 and a lid body 3. The base body 2 is provided with a pair of primary wire insertion holes 21, 21 and a pair of secondary wire insertion holes 22, 22. The above-mentioned wire insertion ports 21, 21, 22, 22 are arranged on the primary side so that the adjacent primary wire insertion ports 21, 21 and the adjacent secondary wire insertion ports 22, 22 face each other. They are arranged in two rows: a row on the secondary side and a row on the secondary side. This one
The next-side and secondary-side electric wire insertion ports 21 and 22 are configured so that two electric wires can be inserted into each, thereby making it possible to connect a power source, a load, and a feed wiring. Of course, as is conventionally known, it is also possible to insert only one wire into the wire insertion port and provide a separate solder connection terminal. Inside this base body 2, connecting terminal fittings 4, 4 for electrically connecting the primary side and the secondary side are provided, facing the primary side and secondary side electric wire insertion ports 21, 22. , 4 are fixed with locking pieces 5, 5 for locking the electric wire. Reference numeral 23 denotes a grounding/grounding wire insertion hole provided on the outer surface of the terminal block, and two wire insertion holes are formed here, one for grounding wire input and the other for grounding wiring. . The wire insertion port 23 for grounding and grounding is connected to each wire insertion port 2 on the secondary side.
A position that avoids the row connecting 2 and 22, and 1
At a position that is aligned with the row connecting each of the wire insertion ports 21, 21 on the next side, either one of the primary wire insertion ports 2
It is placed next to 1. Of course, on the inside of the base body 2 constituting the terminal block main body 1, a ground terminal fitting 6 and a locking piece 5, which constitute a direct conductive connection means between the electrical equipment wall surface 9 and the grounding/grounding wire insertion port 23, are inserted. It is fixed in front of me.
At this time, the earth terminal fitting 6 is an L-shaped fitting with a V-shaped tip as shown in FIG.
For example, it is fixed by screwing between the base body 2 and the lid body 3. The tip of the ground terminal fitting 6 is configured to protrude perpendicularly from the bottom surface of the lid body 3, that is, the terminal block main body 1. This bottom surface constitutes the mounting surface of the terminal block body 1 to the electrical equipment, so
When attached to an electrical device, the tip of the ground terminal fitting 6 comes into contact with the wall surface 9 of the electrical device. At this time, the 6th
As shown in the figure, if a notch 7 is formed in the wall surface 9 of an electrical device and the tip of the ground terminal fitting 6 is placed so as to fit into the notch 7, electricity can be generated by attaching the terminal block body 1 to the electrical device. Equipment and terminal block body 1
It is possible to directly and reliably obtain an electrical connection with the ground terminal fitting 6 provided at the terminal. According to such a configuration, the electrical equipment can be grounded simply by inserting the grounding wire into the grounding/grounding wire insertion port 23, making the work extremely easy. Furthermore, the protruding portion formed by the tip of the earth terminal fitting 6 can be positioned with one set screw serving as a mounting means for the terminal block main body 1. In addition, 61 is a screw for fixing the base 2, the lid body 3, and the earth terminal fitting 6, 8 is a set screw as a mounting means for attaching the terminal block body 1 to the wall surface 9 of the electrical equipment, 31 is the screw hole, and 24 is each This is an electric wire release hole provided adjacent to the electric wire insertion ports 21, 22, and 23.

Note that the ground wire insertion port and the ground feed wire insertion port can be provided independently, but if they are formed close to the row of each primary wire insertion port, avoiding the row of each secondary wire insertion port. , the earth terminal fitting can be made small and can be constructed at low cost. Moreover, as is conventionally known, if the screw 61 that fixes this earth terminal fitting is extended and used also as the set screw 8 for fixing the terminal block, it can be screwed directly into the wall surface 9 of the electrical equipment. Ground connection can be made indirectly via the set screw 8 without protruding the tip of the ground terminal fitting 6.

[Effect of idea]

As explained above, the present invention provides a grounding wire insertion port and a grounding wire insertion port in locations close to the rows of each primary side wire insertion port in the quick connection terminal block.
Since the wire insertion ports on the primary side and the secondary side are arranged asymmetrically, there is no risk of accidentally inserting the power wire into the ground wire insertion port, making the construction work easier. In addition, since the wire insertion port for inputting and sending the ground wire is provided on one side, the ground terminal metal fitting can be small and can be constructed at low cost. Moreover, by attaching the terminal block to the wall surface of the electrical equipment, the structure is configured so that the ground terminal fitting and the wall surface of the electrical equipment can be connected directly or indirectly, making the grounding work associated with the installation of electrical equipment extremely easy. be.

[Brief explanation of the drawing]

The drawings are all related to the embodiment of the present invention; Fig. 1 is a perspective view, Fig. 2 is a partially cutaway plan view, Fig. 3 is a sectional view taken along line A-A' in Fig. 1, and Fig. 4 is a chain view. Figure 5 is a perspective view of the lock, Figure 5 is a perspective view of the ground terminal fitting, and Figure 6 is a side view showing how it is connected to electrical equipment. In the figure, 1 is a quick connection terminal block, and 21 is a primary wire Reference numeral 22 designates a secondary-side electric wire insertion port, 23 designates a grounding/grounding wire insertion port, 5 designates a locking piece, and 6 designates a ground terminal fitting.

Claims (1)

[Scope of utility model registration request] A pair of primary and secondary wire insertion ports are provided on the outer surface of the approximately box-shaped terminal block main body, and each of the wire insertion ports is connected to the adjacent two wire insertion ports under each adjacent primary side.
The terminal block is arranged in two rows on the primary side and the secondary side so that the terminal blocks on the next side face each other, and has means for attaching the terminal block main body to the wall surface of the electrical equipment. A ground wire insertion port and a ground feed wire insertion port are provided on the outer surface at positions aligned with the rows connecting the primary side wire insertion ports, and the ground wire insertion port and ground feed wire insertion port are provided within the terminal block body. A ground terminal fitting and a locking piece are provided facing the earth terminal fitting and a locking piece opposed to the earth terminal fitting, and the means for attaching the electrical equipment to the wall surface is composed of a set screw and a positioning part provided to protrude from the bottom surface of the terminal block main body, A grounding device characterized in that a conductive connection means is provided for directly or indirectly electrically connecting a ground terminal fitting and a wall surface of an electrical device by fixing the terminal block main body to the wall surface of the electrical device using the mounting means. Quick connection terminal block with terminals.