JPH06310184A - Connection terminal device - Google Patents

Abstract

PURPOSE:To provide a connection terminal device which smoothly leads the tip end section of a lead wire inserted into the inside of an insertion hole to a hold section between the tip end periphery of a second bent section and the back face of a base plate, and can surely insert it into the hold section. CONSTITUTION:The connection terminal device is equipped with a connection terminal 1 composed of a conductive metallic sheet, and with a terminal cover 2 covering the aforesaid connection terminal, and the aforesaid connection terminal includes a base plate 3, a bent piece 4, an insertion hole 5 for inserting a lead wire, a first bent section 6, and a second bent section 7, so that the tip end section of the lead wire (a) inserted into the aforesaid insertion hole 5 is thereby elastically held by the tip end periphery of the second bent section 7 and the back face of the base plate 3. A guide clapper 20 leading the tip end section of the lead wire (a) to the aforesaid hold section 8 is provided for a section in the inside of the insertion section of the connection terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection terminal device for connecting terminals of lead wires.

[0002]

2. Description of the Related Art For example, a ballast for lighting equipment is provided with a connection terminal device, and a lead wire on the power source side is connected to the ballast via the connection terminal device. A conventional structure of such a connection terminal device is disclosed in Japanese Patent Laid-Open No. 1-16168.
It is disclosed in Japanese Patent Publication No.

This connection terminal device, as shown in FIG.
A connection terminal 1 formed of a conductive metal plate is provided, and the connection terminal 1 is covered with a terminal cover 2. The connection terminal 1 has a bent piece 4 formed at the end of a metal base plate 3 and bent downward at substantially a right angle.
Has a through hole 5 through which the lead wire a can be inserted, and a first bent portion 6 folded back in an arc shape toward the back surface side of the base plate 3 is formed at the tip of the bent piece 4. Further, a second bent portion 7 bent in a direction opposite to the bending direction of the first bent portion 6 is formed at the tip end portion of the first bent portion 6, and the second bent portion 7 The leading edge extends toward the back surface of the base plate 3, and a holding portion 8 that holds the lead wire a is provided between the leading edge of the second bent portion 7 and the back surface of the base plate 3.

Reference numeral 9 shown in the drawing is a mounting tongue piece 10 formed by bending the end portion of the base plate 3 on the opposite side of the folding piece 4.
Is a connecting tongue formed by cutting and raising the upper surface of the base plate 3. Further, 11 is, for example, a coil bobbin of a ballast for lighting equipment, and 12 is a coil wound around the coil bobbin 11.

A terminal block 15 is provided in a part of the coil bobbin 11, a mounting hole 16 is formed in the terminal block 15, and the mounting tongue piece 9 is inserted into the mounting hole 16, whereby the connection terminal 1 is connected. The terminal 12a of the winding of the coil 12 is attached and fixed to the terminal block 15, and the connecting tongue 1
It is sandwiched and connected inside 0.

In this state where the connection terminal 1 is attached to the terminal block 15, the terminal cover 2 is attached to the terminal block 15 from the direction of arrow A in FIG. 4, and the connection terminal 1 is covered with the terminal cover 2. An insertion port 17 for inserting the lead wire a is formed in the terminal cover 2 so as to face the insertion hole 5 formed in the connection terminal 1. The terminal cover 2
Is attached to the terminal block 15 by being locked by locking claws (not shown) provided on both sides of the terminal block 15.

In this state, the lead wire (single wire) a is inserted from the insertion port 17 of the terminal cover 2 into the inside of the folded piece 4 through the insertion hole 5 of the connection terminal 1, and the tip portion of this lead wire a is The lead wire a and the connection terminal 1 are electrically and mechanically connected to each other by being inserted into the holding portion 8 between the front edge of the bent portion 7 and the back surface of the base plate 3 and elastically holding the lead wire a. is there.

[0008]

However, the tip end of the lead wire a inserted into the folded piece 4 through the insertion hole 5 is bent at an angle, or the lead wire a is inserted into the insertion hole 5 at an angle. In that case, the lead wire a
Of the lead wire a cannot be smoothly inserted into the holding portion 8 because the tip end of the second bent portion 7 abuts on the base portion of the second bent portion 7, and if the insertion operation is forced, The base of the bent portion 7 is greatly deformed to exceed the elastic limit,
Even if the tip of the lead wire a can be held by the holding portion 8, its elastic holding force may be insufficient and connection failure may occur.

The present invention has been made by paying attention to such a point, and an object of the present invention is to make the tip portion of the lead wire inserted inside the insertion hole the tip edge of the second bent portion and the base. An object of the present invention is to provide a connection terminal device that can be smoothly guided to a holding portion between the back surface of a plate and accurately inserted into the holding portion.

[0010]

In order to achieve such an object, the present invention comprises a connection terminal formed of a conductive metal plate and a terminal cover for covering the connection terminal, wherein the connection terminal is a base. A bent piece formed by bending the end of the plate at a substantially right angle, a lead wire insertion hole formed in the bent base of the bent piece, and a tip end of the bent piece facing the back side of the base plate. A first bent portion formed by folding back in an arc shape, and a second bent portion formed at the tip of the first bent portion in a direction opposite to the bending direction of the first bent portion. And a holding portion configured to hold the lead wire between the front edge of the second bending portion and the back surface of the base plate, and the front end portion of the lead wire inserted from the insertion hole. A connection terminal that is inserted into the holding part and elastically holds it In location, in which the distal end portion of the inner portion to the lead wire insertion hole of the connection terminal and to provide a guide portion for guiding the clamping portion.

[0011]

In this structure, when the lead wire is inserted inside the folded piece, the tip of the lead wire is guided by the guide portion toward the pinching portion between the tip edge of the second bent portion and the back surface of the base plate. Therefore, the leading end of the lead wire is smoothly guided to the holding portion and held accurately without being brought into contact with the base portion of the second bent portion.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. The parts corresponding to those of the conventional structure are designated by the same reference numerals and the description thereof will be omitted. Figure 1
4 to FIG. 4, there is shown a first embodiment.
In this embodiment, a flat plate-shaped guide tongue piece 20 forming a guide portion is formed inside the insertion hole 5. The guide tongue piece 20 is formed so as to project from the lower end edge of the insertion hole 5 toward the holding portion 8 and obliquely upward.

Further, as shown in FIG. 4, a notch widening portion 23 composed of a substantially semicircular concave portion 21 and inclined edges 22 and 22 extending on both sides thereof is formed at the tip edge of the second bent portion 7. Has been done.

When connecting the lead wire a to the connection terminal 1, first, the tip portion of the lead wire a is inserted into the insertion port 17 of the terminal cover 2. The tip of the lead wire a inserted into the insertion port 17 enters the inside of the folded piece 4 through the insertion hole 5 and is guided by the guide tongue piece 20 toward the tip edge of the second bent portion 7. And proceed. Then, the second bent portion 7 is pressed by the tip portion of the lead wire a and is elastically displaced slightly downward, and in response to this displacement, the tip portion of the lead wire a is recessed as shown by a chain line in FIG. Enter the inside of 21,
In this state, the tip portion of the lead wire a is elastically held between the tip edge of the second bent portion 7 and the back surface of the base plate 3, whereby the lead wire a and the connection terminal 1 are electrically and mechanically connected. Connection is made.

In this way, when the lead wire a is inserted, the tip portion of the lead wire a is guided by the guide tongue piece 20 to the second bent portion 7.
Is guided toward the sandwiching portion 8 between the tip edge of the base plate 3 and the back surface of the base plate 3, so that the tip portion of the lead wire a does not come into contact with the base portion of the second bent portion 7 and is always sandwiched. Part 8
Be smoothly guided to.

Then, the concave portion 21 at the tip edge of the second bent portion 7 is formed.
The tip of the lead wire a is engaged with and supported by the lead wire a.
The wire is in line contact with the tip edge of the bent portion 7, and its electrical continuity is ensured.

FIG. 5 shows a second embodiment. In this second embodiment, a guide tongue piece 20a which is curved in a substantially U shape as a guide portion is provided inside the insertion hole 5 and the insertion hole. 5
It is formed so as to project from the edge portion of the holding portion 8 toward the holding portion 8.

Even in such a structure, when the lead wire a is inserted from the insertion hole 5 as in the first embodiment,
The tip portion thereof is guided by the guide tongue piece 20a toward the sandwiching portion 8 between the tip edge of the second bending portion 7 and the back surface of the base plate 3, without contacting the base portion of the second bending portion 7. It is smoothly guided to the holding portion 8 and held in the holding portion 8 reliably.

A third embodiment is shown in FIGS. 6 and 7, and in the third embodiment, the insertion hole 5 is a relatively large opening extending between the folding piece 4 and the base plate 3. Is formed as. And inside the terminal cover 2,
A guide cylinder 20b is formed as a guide part, which is continuous with the insertion port 17. The guide cylinder 20b is arranged inside the insertion hole 5 through the insertion hole 5 according to the mounting of the terminal cover 2 on the connection terminal 1. The guide cylinder 20a has a structure facing the holding section 8.

In such a case, the terminal cover 2
When the lead wire a is inserted from the insertion port 17 of the above, the tip portion thereof is guided by the guide tube 20b toward the holding portion 8 between the tip edge of the second bending portion 7 and the back surface of the base plate 3, The holding portion 8 smoothly without contacting the base portion of the second bending portion 7
Be held by and be held by.

[0021]

As described above, according to the present invention,
Since a guide part for guiding the lead wire is provided inside the insertion hole,
The leading end of the lead wire inserted inside the folded back tongue is smoothly guided to the holding part between the leading edge of the second bent part and the back surface of the base plate, and therefore is properly inserted into the holding part and secured. Connection can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional view of a connection terminal device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a connection terminal of the connection terminal device.

FIG. 3 is a sectional view of the connection terminal.

FIG. 4 is a front view of a holding portion of the connection terminal.

FIG. 5 is a perspective view of a connection terminal in the connection terminal device according to the second embodiment of the present invention.

FIG. 6 is a sectional view of a connection terminal device according to a third embodiment of the present invention.

FIG. 7 is an exploded perspective view of the connection terminal device.

FIG. 8 is a cross-sectional view of a conventional connection terminal device.

[Explanation of symbols]

 a ... Lead wire 1 ... Connection terminal 2 ... Terminal cover 3 ... Base plate 4 ... Folding piece 5 ... Insertion hole 6 ... First bent part 7 ... Second bent part 8 ... Holding part 20 ... Guide tongue piece (guide part) ) 20a ... Guide tongue (guide) 20b ... Guide tube (guide)

Claims (1)

[Claims] 1. A connection terminal formed of a conductive metal plate and a terminal cover for covering the connection terminal. The connection terminal includes a bent piece formed by bending an end portion of a base plate at a substantially right angle. An insertion hole for inserting a lead wire formed in a bending base portion of the bending piece, a first bending portion formed by being folded back in an arc shape toward a rear surface side of the base plate at a tip end portion of the bending piece, and A tip end portion of the first bending portion has a second bending portion formed by bending in a direction opposite to a bending direction of the first bending portion, and a tip edge of the second bending portion. And a rear surface of the base plate, a holding portion configured to hold a lead wire is configured, and a tip portion of the lead wire inserted from the insertion hole is inserted into the holding portion to elastically hold the connection terminal device, wherein Insert the lead wire inside the insertion hole of the connection terminal. A connection terminal device, characterized in that a guide portion is provided for guiding the tip portion to the holding portion.