JPH0620298Y2 - Terminal fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a terminal fitting, and more particularly to a terminal fitting suitable for mounting on a printed circuit board.

[Prior Art] Conventionally, as shown in FIG. 4, a terminal fitting has a left slit 11L and a right slit 1 provided on a printed circuit board 11.
Insert the terminal piece left end 12L and the terminal piece right end 12R of the terminal piece 12 into 1R,
The bottom surface of the is fixed by soldering or the like.

The housing member 6 as a case, which is a molded product, has a boss 6a.
And a terminal screw 1 having a screw washer 6c (FIG. 5) provided in the hole 6b of the boss 6a and a terminal washer 14
3 is configured to be screwed. It should be noted that the printed board 11 and the terminal piece 12 are provided with through holes for inserting the terminal screws 13.

[Problems to be Solved by the Invention] In such a terminal fitting, the terminal piece 12
Is not a flat surface, or the distance between the left and right ends of the terminal piece 12 does not match the dimension between the left slit 11L and the right slit 11R of the printed circuit board 11, so A gap is formed between the upper surface of the printed board 11 and the upper surface. Further, such a gap is also formed in the work process when fixing the terminal piece 12 to the printed board 11.

In this terminal fitting, as shown in FIG. 5, by inserting the electric wire 5 between the terminal piece 12 and the terminal washer 14 and tightening the terminal screw 13, the left end portion 12L of the terminal piece 12 and the right end portion of the terminal piece 12 are tightened. The load is applied to the soldered part of 12R, and the terminal piece 12
If there is a gap between the lower surface of the terminal piece 12 and the upper surface of the printed circuit board 11, if the tightening is too strong, the gap between the lower surface of the terminal piece 12 and the upper surface of the printed circuit board 11 disappears. The solder of the left end 12L of the terminal piece 12L and the right end 12R of the terminal piece 12 of the terminal piece 12 fixed on the lower surfaces of the left slit 11L and the right slit 11R provided on the printed board 11 is separated from the printed board 11.
There is a problem that the circuit pattern of is damaged.

[Object of the Invention] The present invention has been made to solve such a problem, and damages a circuit pattern of a printed circuit board caused when a gap between the printed circuit board and a terminal piece is pressed by screwing a terminal screw. The purpose is to provide a terminal fitting that can prevent this.

[Means for Solving the Problems] In order to achieve the above object, a terminal fitting according to the present invention is provided with a left slit and a right slit on a printed circuit board, and is movable to a surface portion contacting the printed circuit board and the left slit. The leaf spring-like terminal piece is inserted into the left end and the leaf spring-like terminal piece is inserted into the right slit and fixed to the printed circuit board. Part of the leaf spring-shaped terminal piece is bent downward from an extension piece that is extended to a predetermined position apart from the surface side of the part, and the left end of the leaf spring terminal piece is bent downward from the surface edge of the surface part and the right end of the leaf spring terminal piece. Part is inserted into the right slit and fixed to the printed circuit board, and the leaf spring-like terminal piece is inserted into the left slit so that the left end of the leaf spring-like terminal piece is movably inserted. The rule piece is bent so that the surface part floats up on the surface side part, and a terminal screw that is screwed into a screw hole provided in the boss of the housing member through a hole provided in the leaf spring terminal piece, When the terminal screw is screwed into the screw hole, the terminal washer comes into contact with the leaf spring terminal piece to hold the electric wire.

Embodiment Hereinafter, a preferred embodiment of the terminal fitting according to the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a terminal fitting according to the present invention is provided with a left slit 1L and a right slit 1R on a printed circuit board 1.

The leaf spring-shaped terminal piece 2 is provided with a surface portion 2b in contact with the printed circuit board 1, a leaf spring-shaped terminal piece left end portion 2L and a leaf spring-shaped terminal piece right end portion 2R.

The right end portion 2R of the leaf spring terminal piece is located below the extension piece 2c extended to a position slightly apart from the surface side portion A of the surface portion 2b of the leaf spring terminal piece 2 as shown in FIGS. It has a bent structure.

The left end 2L of the leaf spring terminal piece is bent immediately downward from the surface side of the surface portion 2b.

The hole 2a is provided in the center of the surface of the leaf spring terminal piece 2 as in the conventional case.

The leaf spring-shaped terminal piece left end 2L and the leaf spring-shaped terminal piece right end 2R of the leaf spring-shaped terminal piece 2 are inserted into the left slit 1L and the right slit 1R provided on the printed circuit board 11, and the leaf spring-shaped terminal piece right end 2R is inserted. The root part of is fixed to the printed circuit board 1 by soldering in the vicinity of the lower surface of the right slit 1R of the printed circuit board 1.

The left slit 1L and the left end portion 2L of the leaf spring terminal piece are movably inserted without soldering.

The right end 2R of the leaf spring terminal piece is the right slit 1R.
And fixed to the printed circuit board 1 by soldering,
The leaf spring-shaped terminal piece 2 is inserted into the left slit 1L so that the left end 2L of the leaf spring-shaped terminal piece is movably inserted.
A surface portion 2 in which a hole 2a is provided in the surface side portion A
It has a structure in which b is bent so as to float (FIG. 2), and thereby the leaf spring-shaped terminal piece 2 is given a spring property.

Also, a boss 6a having a screw hole 6c in the hole 6b (FIG. 2)
Is formed integrally with a casing member 6 as a case, which is a molded product, so that the terminal screw 3 pushed through the hole 2a of the printed circuit board 1 and the leaf spring terminal piece 2 can be screwed. There is.

The terminal screw 3 is provided with a terminal washer 4 that holds the electric wire 5 in contact with the leaf spring terminal piece 2 when screwed into the screw hole 6c.

[Operation of the Invention] In the terminal fitting according to the present invention configured as described above, the electric wire 5 is inserted between the terminal washer 4 and the leaf spring-shaped terminal piece 2 as shown in FIG. When the terminal piece 2 is inserted into the hole 2a of the terminal piece 2 and screwed into the screw hole 6c of the boss 6a, the pressing force by tightening causes the surface 2b of the terminal piece 2 to float up at the surface side A as shown in FIG. It is absorbed by the fact that it is bent to have a spring characteristic and that the left end 2L of the leaf spring terminal piece inserted into the left slit 1L is movable and free.

Further, the right end portion 2R of the leaf spring terminal piece is fixed to the printed circuit board 1 by being bent downward from the extension piece 2c extended to a position away from the surface side portion A of the surface portion 2b and fixed to the printed circuit board 1. Since the solder fixing portion of the right end portion 2R of the leaf spring terminal piece is separated from the center of the tightening pressing force by screwing the screw hole 3 into the screw hole 6c, the load on the solder fixing portion is reduced and abnormal tightening may occur. Even if the gap between the upper surface of the printed circuit board 1 and the leaf spring terminal piece 2 is pressed, the circuit pattern of the printed circuit board 1 is not damaged.

[Effects of the Invention] As apparent from the above embodiments, in the terminal fitting according to the present invention, the electric wire is inserted between the terminal washer and the leaf spring terminal piece, and the terminal screw is inserted into the hole of the leaf spring terminal piece. When the terminal piece is inserted into the screw hole of the boss, the pressing force by tightening is such that the terminal piece has a spring property by bending so that the surface part floats on the surface side part, and it is inserted in the left slit. The left end of the leaf spring-like terminal piece is absorbed by being free and movable, and the right end of the leaf spring-like terminal piece is folded downward from an extension piece that is extended to a position away from the surface side of the surface. Since it is bent and fixed to the printed circuit board, the leaf spring-shaped terminal piece right from the center of the tightening pressure by screwing the terminal screw into the screw hole. Since the solder fixing part at the end is separated, the load on the solder fixing part is reduced, and even if the gap between the upper surface of the printed circuit board and the leaf spring terminal piece is pressed by abnormal tightening, the circuit of the printed circuit board It does not damage the pattern.

[Brief description of drawings]

1 and 2 are side views in which a part of the terminal fitting according to the present invention is shown in section, FIG. 3 is a surface view of the leaf spring terminal piece of FIG. 2, and FIGS. It is the side view which made a cross section a part of terminal fitting. 1 ... Printed circuit board 1L ... Left slit 1R ... Right slit 2 ... Leaf spring terminal piece 2L ... Leaf spring terminal piece left end 2R ... Leaf spring terminal right end 2a ... Hole 2b ... Surface part in contact with the printed circuit board A ... Surface side part 2c ... Extended extension piece 3 ... Terminal screw 4 ... Terminal washer 5 ... Electric wire 6 ... Housing member 6a ... Boss 6c ... Screw Hole

Claims (1)

[Scope of utility model registration request] 1. A left slit (1L) on a printed circuit board (1).
And a right slit (1R) are provided, and the surface portion (2b) is in contact with the printed circuit board, the leaf spring terminal piece left end portion (2L) movably inserted into the left slit, and the right slit. A leaf spring-like terminal piece (2) having a leaf spring-like terminal piece right end portion (2R) fixed to the printed circuit board is provided, and the leaf spring-like terminal piece right end portion is closer to the surface side portion (A) of the surface portion. The leaf spring-shaped terminal piece is bent downward from an extension piece (2c) extended to a predetermined position, and the left end portion of the leaf spring terminal piece is bent downward from a surface side portion (A) of the surface portion to form the leaf spring shape. The right end of the terminal piece is inserted into the right slit and fixed to the printed circuit board, and the left end of the leaf spring-like terminal piece is movably inserted into the left slit. Null piece is folded so that the surface portion is lifted in the surface side portion (A),
Screw holes (6c) provided in the boss (6a) of the housing member (6) through the holes (2a) provided in the leaf spring terminal piece.
And a terminal washer (4) for screwing the wire (5) into contact with the leaf spring terminal piece when the terminal screw is screwed into the screw hole.
Terminal fittings characterized by having and.