JPH0454353B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wire connection terminal for connecting wires to electrical appliances and the like.

BACKGROUND ART Conventionally, this type of electric wire connection terminal has a structure as shown in FIGS. 6 and 7. In the figure, 1 is a screw terminal fitting for connecting electric wires, and the opposing ends are bent upward to form a substantially U-shape, and the other opposing ends are partially bent downward. A terminal fitting 2 that forms a lead wire connection part 5 and has a screw hole on the wire connection surface, a terminal screw 3 that is screwed into the screw hole, and a terminal fitting 2 that is rotatably fitted under the neck of the terminal screw 3. and a wire holding plate 4. Reference numeral 6 denotes an electric appliance, on the surface of which a mounting portion 7 for mounting the screw terminal fitting 1 is formed in a concave shape.
An insertion hole 5 for the lead wire connection part 5 is provided on the bottom of the mounting part 7.
A through hole 3a is drilled through which the terminal screw 3 passes through, and after inserting the lead wire connection portion into the insertion hole 5a, the screw terminal fitting 1 is attached to the electrical appliance 6 by twisting the lead wire connection portion 5. ing.

Problems to be Solved by the Invention In such a conventional configuration of a connection terminal for an electric appliance, etc., the lead wire connection part 5 of the screw terminal fitting 1 is inserted into the insertion hole 5a of the electric appliance 6, and the terminal is inserted into the inside of the electric appliance. Therefore, the lead wire connection portion 5 had to be twisted and attached using a tool or the like. Further, since the mounting portion 7 of the screw terminal fitting 1 is generally located at the end of the electrical appliance 6, there is not enough space for a tool for twisting the lead wire connection portion 5, resulting in poor workability. As a result, the degree of twisting of the lead wire connection portion 5 was unstable, and sometimes the lead wire connection portion 5 was twisted so much that it broke or was attached with a crack. Furthermore, in order to electrically connect the circuit members etc. housed in the electric appliance 6 and the screw terminal fitting 1, the lead wires of the circuit members etc. are soldered to the lead wire connection part 5, but as described above, Since the space around the lead wire connection portion 5 is not large, there are problems such as poor soldering workability and an uncertain connection state.

The present invention solves these problems,
To enable a screw terminal fitting to be attached without twisting a lead wire connection part, and to eliminate the need for connection work such as soldering inside an electric appliance.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a terminal fitting formed in a substantially U-shape, a terminal screw screwed into the terminal fitting, and a screw threaded under the neck of the terminal screw. A screw terminal fitting composed of a movably fitted electric wire holding plate, and an installation in which the approximately U-shaped top of the terminal fitting is brought into contact with the inner bottom surface of the terminal fitting to position and mount the screw terminal fitting. and a hole for tightening the terminal screw formed in the mounting surface of the mounting part, and a substantially U-shaped terminal fitting inserted into the case through the opening of the case. a holder having an abutting part that abuts against the back surface of the terminal to fix the screw terminal fitting to the mounting part; and a cover that fixes the holder in the case and is attached to the case by covering the opening of the case. It consists of:

Effect The effects of this technical means are as follows.

In other words, a circuit unit is constructed by connecting the lead wire of a circuit member, etc. to the lead wire connection part of the screw terminal fitting, and the circuit member, etc. of this circuit unit is inserted into a predetermined position in the case of the electrical appliance, or by screwing it into the terminal. Insert the attached terminal fitting into the installation part provided inside the case, insert the holder through the opening of the case, and touch the contact part of the holder to the circuit member, etc. and the screw terminal fitting, and then insert the cover into the opening of the case. The circuit components and screw terminal fittings are installed and fixed in the case by applying pressure to the holder to cover the opening, so it is not necessary to twist the lead wire connection part in order to attach the screw terminal fittings. There is no need to bend the lead wires of the screw terminal fittings, and the lead wires of circuit components can be connected from the front to the lead wire connection part of the screw terminal fitting, making work such as soldering extremely easy. No space is required for soldering inside the device, and the electrical appliance can be made smaller.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. In the figure, reference numeral 8 denotes a box-shaped case for electrical appliances, etc., into which a power transformer 9, such as a circuit member, is positioned and inserted. Reference numerals 10 and 11 designate attachment portions that are respectively disposed at adjacent corners of the eight cases, so that two screw terminal fittings 1 can be attached to each of them. These mounting parts 10 and 11 are connected to the bottom surface 12 of the case 8 and the bottom surface 1.
It is formed into a plurality of box shapes by partition walls 13 extending from 2 toward the opening. In addition, the mounting surfaces of the mounting parts 10 and 11, that is, the bottom surface 1 of the case 8
2 has a hole 14 for tightening the terminal screw 3, and
A connection hole (not shown) into which the power supply and load wires are inserted is bored in the side surface.

Here, since the screw terminal fitting 1 is the same as that shown in the conventional example, the same number is given and the explanation thereof will be omitted.

The screw terminal fitting 1 is inserted so that the U-shaped top of the terminal fitting 2 comes into contact with the inside of the mounting surface of the mounting parts 10 and 11, and is electrically separated from the adjacent screw terminal fittings 1 by the partition wall 13. It is insulated and positioned. Reference numerals 15 and 16 denote holders having guides 15a and 16a inserted into the case 8 from the opening of the case 8 along the side wall, and whose lower edges 15b and 16b are the cores of the power transformer 9 inserted into the case 8. 17, and an abutting portion 18 provided at one end thereof abuts against the U-shaped back surface of the terminal fitting 2. The abutting portions 18 extend from the holders 15 and 16 and are formed in the shape of a partition wall so as to fit into the mounting portions 10 and 11 of the case 8, and the tip portions thereof are attached to the terminal fittings 2 as described above. Touch the back. Reference numeral 19 denotes an insulating sheet that covers the upper part of the winding 20 of the power transformer 9. 2
1 is a cover that covers the opening of the case 8, and the mounting hole 2
2 is attached to the case 8 with screws. Although not shown in the drawings, the cover 21 is provided with, for example, a tongue piece cut and raised toward the inside of the case 8.
Due to the elasticity of the tongue pieces, the holders 15 and 16 are attached to the case 8.
The screw terminal fittings 1 that come into contact with the holders 15 and 16 are attached to the mounting parts 10 and 11 by pressing toward the bottom surface of the holders 15 and 16.
The power transformer 9 is securely mounted in a predetermined position. In addition, regardless of the above-mentioned tongue piece,
It goes without saying that the same effect can be achieved even if a separate elastic body is attached to the cover 21, or the elasticity of the cover 21 itself is utilized, or even if the holders 15 and 16 are provided with elastic bodies.

Next, the operation of this embodiment will be explained.

First, the primary side lead wire of the power transformer 9, which is a circuit member, and the secondary side lead wire of the power transformer 9 are connected to the lead wire connection part 5 of the screw terminal fitting 1 by soldering or the like, and the circuit unit is assembled. The power transformer 9 of this circuit unit is inserted into the case 8 at a predetermined position. Next, the screw terminal fittings 1 to which the lead wires of the primary and secondary sides of the transformer 9 are connected are attached to the mounting parts 10 and 1 of the case 8.
1, the U-shaped top of the terminal fitting 2 is the mounting part 10, 1
Insert it so that it touches the mounting surface of 1. As a result, the positions of the power transformer 9 and the screw terminal fitting 1 are determined within the case 8. Next, holder 1
5, 16 into the case 8, and the holder 15,
16 are brought into contact with the core 17 of the power transformer 9, and the contact portion 18 is brought into contact with the U-shaped back surface of the terminal fitting 2. Subsequently, an insulating sheet is placed above the winding 20 of the power transformer 9, the opening of the case 8 is covered with the cover 21, and the cover 21 is attached to the case 8 with screws. By attaching the cover 21, the holders 15 and 16 receive a pressing force toward the bottom surface of the case 8, pressing the power transformer 9 and the screw terminal fitting 1, and securely attaching them to predetermined positions.

To attach the primary power wire and the secondary load wire to the screw terminal fitting 1 installed in this way, use a tool such as a screwdriver to screw the terminal screws through the holes 14 for tightening the terminal screws 3. 3 is loosened, the wire is inserted through the wire connection hole between the wire holding plate 4 and the terminal fitting 2, and the terminal screw 3 is tightened.

Next, another embodiment of the present invention will be described with reference to FIG. In the figure, the same members as those in FIG. 1 are given the same numbers, and their explanations are omitted, and different structures will be explained.

In this embodiment, the hole 23 for tightening the terminal screw 3 is formed to be smaller than the plane size of the wire holding plate 4 of the screw terminal fitting 1, and when the terminal screw 3 is loosened, the terminal screw 3 is inserted into the terminal. Even if the terminal screw 3 is removed from the metal fitting 2, the terminal screw 3 to which the wire holding plate 4 is fitted will not fall off from the mounting parts 10, 11, and the first
Compared to the configuration shown in the figure, it is possible to eliminate the problem of the terminal screw 3 falling off and being lost during the wire installation work.

In addition, in the above first and second embodiments,
Although the terminal fittings 2 of the screw terminal fitting 1 have been described as having a U-shaped shape, it is of course possible to achieve the same function and effect even if the terminal fittings 2 are simply flat without being bent into a U-shape. It is.

Effects of the Invention As described above, according to the wire connection terminal for electrical appliances, etc. of the present invention, a circuit member etc. and a screw terminal fitting are connected in advance to form a circuit unit, and this unit is placed at a predetermined position in a case. The screw terminal fitting can be securely attached by inserting and positioning the holder, then assembling the holder and cover in sequence, and attaching the cover with screws. This eliminates the need to twist the parts and attach them to the case, or to solder the lead wires to the lead wire connections in the narrow space inside the case. You can eliminate bad things. Furthermore, since there is no need for soldering inside the case or twisting of the lead wire connection portion, the space required inside the case can be reduced, thereby making it possible to downsize the electrical appliance.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view of the main part showing how the screw terminal fitting of an embodiment of the electric wire connection terminal for electric appliances, etc. of the present invention is attached, and Fig. 2 is a case in which the screw terminal fitting of the same embodiment is attached. Fig. 3 is a perspective view showing the installed state of the screw terminal fitting of the same embodiment, Fig. 4 is an external plan view of
The figure is an exploded perspective view of the same embodiment, FIG. 5 is a sectional side view of main parts showing another embodiment of the wire connection terminal for electric appliances, etc. of the present invention, and FIG. 6 is a conventional example of electric wire connection for electric appliances, etc. FIG. 7 is an exploded perspective view showing a state in which the terminal is attached, and FIG. 7 is a plan view showing the state in which the terminal is attached in the conventional example as seen from inside the electrical appliance. 1...Screw terminal fitting, 2...Terminal fitting, 3...
...Terminal screw, 4...Wire holding plate, 8...Case,
10, 11... Mounting part, 12... Bottom, 13...
Partition wall, 14... Hole, 15, 16... Holder, 1
8...Abutment part, 21...Cover, 22...Mounting hole.

Claims (1)

[Scope of Claims] 1. Consists of a terminal fitting formed in a substantially U-shape, a terminal screw screwed into the terminal fitting, and an electric wire holding plate rotatably fitted under the neck of the terminal screw. a threaded terminal fitting; a mounting portion for positioning and mounting the screw terminal fitting by abutting the substantially U-shaped top of the terminal fitting against its inner bottom surface; and a mounting portion bored in the mounting surface of the mounting portion. A case of an electric appliance having a hole for tightening a terminal screw, and the threaded terminal fitting is inserted into the case through an opening of the case and comes into contact with the substantially U-shaped back surface of the terminal fitting, and the screw terminal fitting is attached to the case. An electric wire connection terminal for electrical appliances, etc., comprising a holder having an abutting part that is fixed to the holder, and a cover that is attached to the case by fixing the holder in the case and covering the opening of the case. 2. An electric wire connection terminal for an electric appliance or the like according to claim 1, wherein the size of the hole for tightening the terminal screw is smaller than the planar size of the wire holding plate.