JPS6118618Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to the structure of a terminal board.

As shown in FIG. 10, the conventional terminal board has a small diameter hole 101 in the upper part and a large diameter hole 10 in the lower part in the vertical direction.
2, an insulating base 100 with a through hole formed and a recess 103 formed in the upper opening of the through hole is used, while a connecting terminal 105 has a hole 106 formed and squeezed out to form a cylindrical portion 107. After placing the connection terminal 105 in the recess 103 of the insulating base 100 and fitting the cylindrical part 107 into the small diameter hole 101, the tip of the cylindrical part 107 is inserted into the insulating base 1.
A connecting terminal 105 is caulked to a step 104 formed between a small diameter hole 101 and a large diameter hole 102 of 00.
is fixed to the insulating base 100, and the inner periphery of the cylindrical portion 107 of the connection terminal 105 is coated with lubricating oil and tapped in order to screw the screw 109 constituting the screw terminal. There is one that forms the thread 108.

However, in the above conventional terminal board, the connection terminal 105
is attached to the through hole of the insulating base 100 from above, then the cylindrical part 107 is caulked into the through hole of the insulating base 100 from below, and the connecting terminal 105 must be threaded, which reduces assembly workability. The disadvantage is that it is bad.

In addition, in the conventional terminal board, the screw 109 that is screwed onto the connection terminal 105 is inserted into the through hole of the insulating base 100, and the tip of the screw 109 is not insulated from the chassis or the like on which the terminal board is attached. Since insulation cannot be ensured because they are placed close to each other without any intervening objects, the large diameter hole 102 of the through hole may be filled with rubber or other filler, or an insulating seat plate may be interposed on the bottom surface of the insulating base 100. This has the disadvantage that electrical safety cannot be maintained unless the through hole is closed and installed, and the number of parts increases, and even if the through hole is filled with padding or an insulating plate is inserted, There were problems such as the filling falling off and people forgetting to use the insulating seat plate during installation.

In addition, in the conventional terminal board, lubricating oil oozes into the through hole of the insulating base 100 when the connecting terminal 105 is tapped, so it takes time and effort to wipe it off.
Furthermore, there were other drawbacks, such as chips from the tapping process remaining in the through hole and causing shoots.

Furthermore, there is a conventional terminal board called Utility Model Publication No. 52-53984. As shown in FIG. 11, the terminal fitting 110 of this terminal board has vertical portions 11 on both sides of the upper surface 112 of the terminal fitting 110 for locking nuts 111.
3, 113, horizontal parts 114, 114 are connected to the vertical parts 113, 113, and foot parts 11
5,115 are arranged in a row. However, this terminal fitting has a complicated shape that requires bending in multiple places, so it is not necessarily easy to manufacture, and
The foot portions 115, 115 are horizontal portions 114, 114
Since the legs 115 are individually placed downwardly at intervals from each other, defects such as bending of the legs 115 are likely to occur when the legs 115 are press-fitted into the terminal receiving holes of the insulating base. Even if the nut 111 is held between the two, if the distance between them is made small, it will be difficult to insert the nut 111.
If the interval is large, there is a problem that the nut 111 becomes loose, and it is difficult to control the dimensions.

The present invention solves the above-mentioned conventional drawbacks, and can be assembled by simply drilling a predetermined bottomed hole in the insulating base and fitting the terminal and nut into the hole in the insulating base from above. , the holes for accommodating the terminals in the insulating base are closed-ended to increase the reliability of electrical insulation and reduce the number of parts, and the terminal fittings are made in a simple shape so that they can be easily manufactured by press processing. To provide a terminal board that can be easily installed without deforming the terminal fittings when press-fitting into an insulating base.

Hereinafter, the present invention will be described with reference to embodiments.

First, reference numeral 1 denotes an insulating base, and this insulating base is provided with a plurality of terminal housing chambers 3 partitioned by insulating partition walls 2 and accommodating screw terminals.

In this terminal housing chamber 3, a terminal fitting 1 is arranged vertically.
A terminal accommodating hole 4 with a bottom is drilled to accommodate the rising plate portions 13, 13 of 1 and 11 and the threaded portion 22 of the screw 21, and a nut 20 is fitted concentrically into the upper opening of the terminal accommodating hole 4. A rectangular recess 5 is formed to fit the terminal accommodating hole 4, and a through hole 7 is formed in the center of the bottom wall 6 of the terminal accommodating hole 4, through which the terminal feet 14, 14 of the terminal fittings 11, 11 are inserted. Both side edges 1 of the rising plate portions 13, 13 of the terminal fittings 11, 11 are vertically placed on both sides of the through hole 7 on both sides of the central portion of the recess 5.
Grooves 8 and 8 into which the grooves 8 and 18 fit are formed.

9, 9 are recesses formed in the upper part of the recess 5 for arranging the horizontal plate parts 12, 12 of the terminal fittings 11, 11, and 10, 10 are mounting holes provided at both ends of the insulating base 1. It is.

Further, 11 is a terminal fitting made of an elastic conductive metal plate, and this terminal fitting has a horizontal plate portion 12 bent into an inverted L shape slightly more acute than a right angle, and a rising plate portion 13. Insert nut 20 from the upper end to the center, and screw 2
A first notch 15 is formed in which the first threaded part 22 is disposed, and a second notch is formed in the center of the horizontal plate part 12 in succession to the first notch 15 and into which the threaded part 22 of the screw 21 is inserted. A section 16 is formed. This terminal fitting 1
1, as shown in FIG. 9, is used by combining two pieces into a set, with their respective upright plate parts 13, 13 overlapping each other, back to back, and combining them into a T-shape when viewed from the side. 17, 17 are both side edges 1 of the rising plate part 13
Serrated locking portions formed at 8, 18, 19, 19
are locking portions formed by cutting and raising a portion of both sides of the rising plate portion 13.

These terminal fittings 11, 11 are in a T-shape, and both side edges 18, 1 of the rising plate portions 13, 13 are
8 is fitted into the grooves 8, 8 of the insulating base 1, the rising plate parts 13, 13 are accommodated in the terminal receiving hole 4, and the terminal fittings 11, 11 are mounted on the insulating base 1. At this time, both side edges 1 of the rising plate parts 13, 13
The locking parts 17, 17 provided in the grooves 8, 8
It bites into the end wall surface of the
The locking parts 19, 19 provided on both sides of the groove part 8,
It comes into contact with the side wall surface of 8 to prevent it from coming off.

In addition, when the terminal fittings 11, 11 are installed, the horizontal plate parts 12, 12 and the rising plate parts 13, 13
The horizontal plate portions 12, 12 of the terminal fittings 11, 11 are configured to press down the nut 20, which is fitted into the recess 5, from the upper surface.

Further, 20 is a square nut, which is locked in the first notch 15 of the terminal fittings 11, 11 in a horizontal state,
It is fitted into the recess 5 of the insulating base 1.

Further, 21 is a screw, and the screw portion 22 is inserted through the second notch portions 16, 16 provided in the horizontal plate portions 12, 12 of the terminal fittings 11, 11, and screwed onto the nut 20. 11 rising plate portion 13,1
3, and accommodated in the terminal accommodating hole 4 of the insulating base 1.

Therefore, to explain how to assemble the terminal board having the above configuration, the two terminal fittings 11, 11 are placed back to back, and the nuts 20 are fitted into the second notches 16, 16 of the rising plate portions 13, 13, and then the nuts 20 are screwed horizontally. In this state, the terminal fittings 11, 11 are press-fitted into the terminal housing chamber 3 of the insulating base 1 from above.
At this time, the rising plate portion 1 of the terminal fittings 11, 11
The side edges 18, 18 of 3, 13 are guided by the grooves 8, 8 of the insulating base 1 and are accurately positioned.
The terminal fittings 11, 11 can be easily assembled without being bent and attached or deformed. Then, the rising plate portions 13, 13 of the terminal fittings 11, 11
is accommodated in the terminal receiving hole 4 of the insulating base 1, and the locking parts 17, 17, 19, 19 act to fix the terminal fittings 11, 11 to the insulating base 1, and the nut 20 is fixed to the insulating base 1. The terminal fittings 11, 11 are fitted into the recesses 5 and positioned, and are made rotatable, and also cannot be moved up and down because the horizontal plate parts 12, 12 of the terminal fittings 11, 11 are elastically pressed down from above. completely fixed. After that, attach the screw 21 to the terminal fitting 1.
It is inserted into the second notches 16, 16 provided in the horizontal plate parts 12, 12 of No. 1, 11 and screwed onto the nut 20.

As mentioned above, since the terminal board of the present invention has a hole with a bottom in the insulating base, the distance between the terminal fitting or screw installed in the hole and the mounting part is greater than that of a conventional through-hole. This ensures reliable insulation, improves electrical safety, and eliminates inconveniences such as the need for a large number of parts to cover through holes.

In addition, in the terminal board of the present invention, the insulating base and the terminal fittings are manufactured separately, and two terminal fittings of the same simple shape are used, and the nuts are secured to these and inserted into the insulating base. Since the terminal fitting and nut are fixed to the insulating base with just a single step, manufacturing and assembly are extremely simple.Furthermore, when press-fitting the terminal fitting into the insulating base, both ends of the rising plate part of the terminal fitting are attached to the insulating base. Since the terminal fittings are guided by the grooves, the pressing force applied to the terminal fittings works effectively to accurately position the terminal fittings, making it possible to easily install the terminal fittings without deforming them, and also fixing the nuts.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of the terminal board of the present invention, Fig. 2 is a longitudinal sectional front view of the same, Fig. 3 is a plan view of the same, Fig. 4 is a partially cutaway front view of the insulating base, and Fig. 5. is also a plan view, FIG. 6 is a sectional view taken along the line A-A in FIG. 5,
Figure 7 is a front view of the terminal board, Figure 8 is a plan view of the same as above,
FIG. 9 is a side view of the same as above, and FIGS. 10 and 11 are explanatory diagrams of the prior art. 1... Insulating base, 3... Terminal housing chamber, 4...
Terminal accommodation hole, 5... recess, 8, 8... groove, 1
1, 11... Terminal fitting, 12, 12... Horizontal plate part, 13, 13... Rising plate part, 15, 15...
First notch, 16, 16...Second notch, 1
8, 18...Both edges of the rising plate portion, 20...Nut, 21...Screw, 22...Threaded portion.

Claims (1)

[Scope of utility model claims] A terminal receiving hole 4 with a bottom that accommodates the rising plate parts 13, 13 of the terminal fittings 11, 11 and the threaded part 22 of the screw 21, which are opened in the vertical direction, and the upper opening of this terminal receiving hole 4 are arranged concentrically. Formed nut 2 below
0, and both side edges 18, 18 of the rising plate portions 13, 13 of the terminal fittings 11, 11, which are formed vertically on both sides of the center of the terminal receiving hole 4 and the recess 5. an insulating base 1 provided with a plurality of terminal housing chambers 3 consisting of grooves 8, 8 into which the terminals are fitted;
It has a horizontal plate part 12 and a rising plate part 13 which are bent into an inverted L shape at a slightly more acute angle than a right angle, and the following nut 20 is fitted into the rising plate part 13 from the upper end to the center part, and the threaded part 22 of the following screw 21 is inserted into the rising plate part 13. While forming the first notch 15 to be arranged, the horizontal plate part 1
2 has a second notch 1 in the center of which is continuous with the first notch 15 and into which the threaded part 22 of the screw 21 described below is inserted.
2 made of an elastic conductive metal plate formed with 6
of each other, and overlap the plate parts 13, 13 to form a T.
The edges 18, 18 on both sides of the rising plate parts 13, 13 are fitted into the grooves 8, 8 of the insulating base 1, and the rising plate parts 13, 13 are inserted into the terminal receiving hole 4 of the insulating base 1. The accommodated terminal fittings 11, 11 and the first notches 15, 15 of the terminal fittings 11, 11
The recess 5 of the insulating base 1 is locked in a horizontal position within the insulating base 1.
A square nut 20 is fitted into the terminal fittings 11, 11 and is held down from above by the horizontal plate portions 12, 11, and the threaded portion 22 is inserted into the second notch 16 of the terminal fittings 11, 11. 16 and is screwed onto the nut 20 and disposed within the first notches 15, 15, and the terminal receiving hole 4 of the insulating base 1.
A terminal board comprising a screw 21 housed within the terminal board.