JP2687628B2 - Terminal block - Google Patents

Description

TECHNICAL FIELD The present invention relates to a direct connection type terminal block used in a flat cable for electric power.

[Prior Art] A direct connection type terminal block used when laying a conventional flat cable is such that a crimp terminal for maintaining electrical contact is connected to a conductor, and this terminal is screwed to the terminal block. The flat cable is inserted between the direct connection type terminal blocks consisting of upper and lower insulators for both 3 conductors and 5 conductors, and tightened at 3 points which penetrate both ends of the flat cable and the ground conductor part in the middle. It is designed to be fixed.

[Problems to be solved by the invention] As described above, in the conventional flat cable direct connection type terminal block, since the central screw stop portion penetrates the ground conductor, a flat tapping screw is used during construction. In order to penetrate the central portion of the cable, a shock had to be applied with a tool such as a hammer. In addition, since the width of the terminal block for five conductors is wide, the insulator bends when the three parts are fixed, and the penetrating blade portion does not penetrate the flat cable insulator sufficiently. It was necessary to increase the rigidity by making it thick or inserting a metal core inside.

Further, since there is a threaded portion penetrating the conductor, there is a risk that the threaded portion may come into contact with the conductor in the charged state.

The present invention has been made in view of such a point,
It is an object of the present invention to provide a flat cable terminal block that enables safe and reliable connection.

[Means for Solving the Problems] In the terminal block of the present invention, five or more conductors arranged in parallel are collectively covered with an insulator to form five or more rows of cable portions, and insulation between adjacent cable portions is provided. The cable part of the flat cable has an insulator penetrating blade with a number of projections that penetrate the insulator of the flat cable that has perforations in the body part; the terminal block insulator with the number of conductors and the base are flat Insert the cable through the insulator of the flat cable by inserting the fixing screw that passes through the terminal block insulator into the base through both sides and the middle perforation of the flat cable. A terminal block that is crimped to a conductor,
The base is composed of a metal plate and an insulating plastic plate attached to the side (upper surface) of the metal plate facing the flat cable, and a sewing machine that penetrates the fixing screw of the flat cable on the plastic plate of the insulating body. Insulation protrusions that penetrate the perforations at the eye portion are provided, and these insulation protrusions have holes through which the fixing screws can pass and are connected to the holes for screwing the fixing screws into the metal plate. The terminal block insulator is provided with a hole on the side facing the flat cable (the lower surface) for inserting the insulating projection portion penetrating the perforation of the flat cable and the insulating portion broken by the insulating projection. It is characterized by being provided.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a state in which a flat cable is connected to the terminal block of the present invention, FIG. 2 is a side view showing a state immediately before connection, and FIG. 3 is a view taken along line III-III in FIG. FIG. That is, the terminal block 10 is composed of an upper terminal block insulator part and a lower base part with the flat cable 5 interposed therebetween. The terminal block insulator portion is composed of a substantially rectangular terminal block insulator 1, and as shown in the sectional view of FIG. 4, an insulator through blade 4 having a U-shaped cross section and a serrated tooth 4a on the lower surface.
Are fitted in parallel to the position corresponding to the cable portion 5a of the flat cable 5, that is, in parallel with the number of the cable portions 5a, and are fixed from above by the fixing screw 8. In addition, the insertion holes for the fixing screw 7 are formed at the left and right ends, the insertion holes 1a for the fixing screw 7 are formed on both sides of the central through blade 4, and the diameter below the hole 1a is wider than this. A hole 1b for fitting the insulating projection 6 on the base plate portion, which will be described later, is formed.

On the other hand, the lower base plate portion is the upper terminal block insulator 1
It is a plate-shaped member having the same size and shape as the above, and is integrated by adhering an insulating plastic plate 2 to the base metal 3 and two at positions corresponding to the middle perforation 5b of the flat cable 5 in the central portion. The insulating protrusions 6 are fixed. A hole 6a for inserting the fixing screw 7 is provided at the center of the insulating protrusion 6,
Further, a screw 3a for the fixing screw 7 is bored in the base metal 3 portion connected to this portion.

Next, an example of construction of the terminal block 10 thus configured will be described. First, the base metal 3 with the plastic plate 2 is placed on the floor, and both ends are fixed with curl plugs (a sleeve-shaped metal fitting such as zinc embedded in concrete, which is used for screwing wood screws). At this time, when drilling the curl plug, use a vacuum cleaner to remove dust and dirt. Then, the 5-conductor flat cable 5 having the perforations 5b for phase separation is placed, and the terminal block insulator 1 of the terminal block 10 is overlaid and covered, and the perforations on both sides of the conductor in the center of the flat cable 5 are placed. The insulating protrusions 6 of the base plate are pierced into 5b, and the fixing screws 7 on both sides are screwed in and fixed. Then, the flat cable 5
The perforation 5b of the base plate is torn by the insulating protrusion 6 and is fitted with the insulating protrusion 6 of the base plate into the hole 1b of the terminal block insulator of the cover portion as shown in FIG. The blade portion 4a of the penetrating blade 4 of the body 1 pierces each conductor portion 5c of the flat cable 5 through its insulating coating, and firmly fixes the flat cable 5. After that, the fixing screw 7 in the central portion is screwed into the screw hole 3a provided in the base metal 3 to be fixed.

[Effects of the Invention] As described above, in the terminal block of the present invention, when the fixing screw is tightened through the perforations in the middle of the flat cable, the insulating protrusion provided on the plastic plate of the base plate penetrates the perforations of the flat cable. This secures a space for inserting the fixing screw, and at the same time serves to avoid electrical contact between the fixing screw and the flat cable conductor. As it is inserted into the hole of the terminal block insulator together with the insulating protrusion, it is possible to ensure electrical insulation between the bolt and the conductor of the cable part adjacent to the bolt insertion position, and this type of terminal block with high safety Can be provided.

[Brief description of the drawings]

1 and 2 are a plan view and a side view showing a state in which the terminal block of the present invention is connected to a flat cable, and FIG. 3 is a sectional view taken along the line III-III in FIG. The figure is a cross-sectional view of the terminal block insulator. 1: Terminal block insulator, 2: Base insulator; Plastic plate, 3:
Base metal; metal plate, 3a: screw hole, 4: through blade, 5: flat cable, 5a: cable part; conductor, 5b: perforation, 6:
Insulation protrusion, 6a: hole, 7: fixing screw.

Claims (1)

(57) [Claims] 1. A flat structure in which five or more conductors arranged in parallel are collectively covered with an insulator to form five or more rows of cable portions, and perforations are provided in the insulator portion between adjacent cable portions. The cable portion of the flat cable has an insulator through blade with a large number of protrusions that penetrate the cable insulator; the terminal block insulator provided for the number of conductors, and the base,
By sandwiching the flat cable and screwing the fixing screw that passes through the terminal block insulator into the base through both sides of the flat cable and the perforations in the middle, screw the insulator through blade to the insulator of the cable portion of the flat cable. A terminal block formed by penetrating and crimping to a conductor, wherein the base is composed of a metal plate and an insulating plastic plate attached to the side (upper surface) of the metal plate facing the flat cable. On the plastic plate, there are insulating projections that penetrate the perforations at the perforations that penetrate the fixing screws of the flat cable, and these insulating projections have holes through which the fixing screws can pass. The metal plate is provided with a hole for screwing the fixing screw in series with the hole, and the terminal block insulator has a flag on the side facing the flat cable (lower surface). Terminal block, characterized by comprising a hole for fitting the insulator portion torn by the insulating protrusion and the insulating protrusion penetrating the perforation of the cable.