JP2001313103A - Terminal structure of terminal strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of assembly components built in the terminal strip in connection of connecting terminals with the external wires and to enable to securely connect the connecting terminals with the external wires. SOLUTION: The connecting piece 7 of the connecting terminal 5 built in the terminal strip comprises a flat plate 16 to support the external wire 11 and bending pieces 17, 17 which are bent from both edge portions at the end of this plate 16. Having the bending pieces 17, 17 bent inward, the external wire 11 is caulked to the bending pieces. Thereby when the connecting piece 7 and the external wire 11 are soldered for connection, the external wire is positioned and fixed steadily without slipping out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal structure in a terminal block for connecting external wiring to connection terminals incorporated in the terminal block.

[0002]

2. Description of the Related Art Generally, a plurality of connection terminals are incorporated in a terminal block formed of an insulating member. Each connection terminal is formed with a connection portion for connecting a pair of external wires to be connected to each other, and the external wires are electrically and mechanically connected to the connection portions. Conventionally, in this type of terminal block, when connecting a wiring cord in which, for example, a thin wire is covered with an insulating tube as an external wiring, a ring-shaped crimp terminal is crimped and fixed to a wire at the end of the wiring cord, and the crimp terminal is fixed. Is screwed to the connection part of the connection terminal with a conductive screw. However, in such a structure in which the wiring cords are connected by the conductive screws, the work of fastening the screws to the connection terminals is troublesome. That is, a plurality of connection terminals are incorporated in this type of terminal block, and the work of turning and tightening the screws to these connection terminals is extremely complicated. Further, when connecting a wiring cord routed from a power supply unit or the like, a loose screw may cause a short circuit accident or the like. For this reason, for example, as shown in FIG. 7, an L-shaped bent connection piece 52 is derived from the terminal block 50, and a wiring cord connected to the connection piece 52.
A crimp terminal 54 is fixed by caulking to the end of 53.
A method is also known in which the crimp terminal 54 and the connection piece 52 are soldered after fitting them into the connection piece 52. However, in such a method, since a crimping work step of the crimp terminal 54 and a soldering step of the connection piece 52 to the crimp terminal 54 are necessary, the number of work steps is large, and the number of parts to be assembled is large. Poor assembly workability. Therefore, a method is also known in which an electric wire (not shown) of the wiring cord 53 is directly wound around the connection piece 52 and soldered without crimping the crimping terminal 54 to the wiring cord 53. With the method of winding the wiring cord 53 around the connection piece 52, the wiring cord 53 cannot be accurately fixed to the connection piece 52, and when a tensile force is applied to the wiring cord 53 during soldering work, the wiring cord 53 is easily detached. There is a surface that is extremely difficult to work due to, for example, the wiring cord 53 moving during the work. Furthermore, when the lead piece 60 of the electronic component is connected to the connection piece 52 as shown in FIG. 8 instead of the power cord 35 to the connection piece 52, the lead terminal 60 of the electronic component is thicker than the wire of the wiring cord 53. 65 is used, and it is extremely difficult to wind such a thick wire 65 directly around the connecting piece 52. Even if such a thick wire 65 can be wound around the connection piece 52, the winding work is extremely troublesome, and the connection piece 52 and the lead terminals 60
Stress may be applied to both of them, and the connection piece 52 may be locally bent or the like, and may come into electrical contact with other electronic components.

The present invention is intended to solve such a problem, and the number of parts to be assembled is reduced to simplify the work of connecting a connection terminal to an external wiring. An object of the present invention is to provide a terminal structure in a terminal block that can be reliably positioned and fixed.

[0004]

According to a first aspect of the present invention, a terminal structure for a terminal block includes a connection terminal incorporated in the terminal block, and an external wiring connected to the connection terminal. It comprises a flat plate portion for supporting the external wiring, and a pair of bent pieces bent from both edges of the flat plate portion to caulk the external wiring.

According to the above configuration, when connecting the external wiring to the connection terminal assembled to the terminal block, the external wiring is placed on the flat plate portion of the connection terminal, and the bent pieces are bent inward, respectively, so that the external pieces are bent by the bent pieces. Tighten the wiring. In this manner, by soldering the external wiring to the connection terminal in a crimped state, the fluctuation and detachment of the external wiring with respect to the connection terminal during the soldering operation or the like are regulated.

According to a second aspect of the present invention, there is provided a terminal structure for a terminal block according to the first aspect, wherein each of the bent pieces is bent inward.
Since each bent piece is arranged at a position where it does not fold, when the external wiring is swaged, the external wiring can be securely swaged without the left and right bent pieces interfering with each other.

According to a third aspect of the present invention, there is provided the terminal structure of the terminal block according to the first or second aspect, wherein cutout recesses are formed at both ends of the bent pieces at the distal end side. Therefore, the bending process of the bent piece is easy during the caulking operation.

According to a fourth aspect of the present invention, in the terminal structure of the terminal block according to any one of the first to third aspects, the terminal structure of the electronic component other than the external wiring is provided on the flat plate portion. Since the mounting holes through which the lead terminals are inserted are formed, it is possible to connect only the external wiring to the connection terminals mounted on the terminal block, or to connect the external wiring and other electronic components to the connection terminals. Is also possible.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show an embodiment of the present invention, in which a terminal block 1 has a structure called a so-called harmonica terminal. As shown in FIG. A plurality of partition walls 3 are integrally formed, and connection terminals 5 are respectively incorporated in storage portions 4 partitioned by the respective partition walls 3.

The connection terminal 5 comprises a connection portion 6 disposed in the storage portion 4 and a connection piece 7 extending from the base 2 to the outside. In this embodiment, two sets of connection terminals 5 are incorporated in the terminal block 1, but one connection terminal 5 is divided into two parts inside the base 2, and Although three connecting portions 6 are arranged, two sets of connecting pieces 7 are led out from the base 2 of the terminal block 1. Then, a conductive screw 9 is screwed into each of the connection portions 6 arranged in the storage portion 4, and the connection terminal 6 is screwed into each of the connection portions 6 by, for example, a wiring cord 10 by the screw 9.
10A is electrically connected.

A connecting piece 7 protruding from the terminal block 1
The external wiring 11 connected to a circuit board (not shown)
Are connected, and the external wiring 11 and the wiring cord 10 are electrically connected to each other through the connection terminals 5 incorporated in the terminal block 1. The external wiring 11 connected to the connection piece 7 includes a wiring cord 13 in which a thin electric wire 12 is covered with an insulating tube 12A, a lead terminal 15 made of a thick conductive wire 14, and the like.

As shown in FIG. 1, the connection piece 7 includes a flat plate portion 16 for supporting the external wiring 11 and bent pieces 17 and 17 bent from both ends of the flat plate portion 16 into an L-shape. ing. The bent pieces 17, 17 are bent inward to caulk the external wiring 11, and when the bent pieces 17, 17 are bent inward, the bent pieces 17, 17 are designed not to be folded. As shown in FIGS. 1 and 2, the flat portions 16 are arranged in a zigzag manner at both ends of the flat plate portion 16. In addition, a U-shaped notch 19 serving as a guide when each of the bent pieces 17, 17 is bent into an L shape is formed on the base side of each of the bent pieces 17, 17, A pair of left and right cutout recesses 20, 20 are formed at the tip end sides of the pieces 17, 17, so that the bending process is easy when the bent pieces 17, 17 are crimped.
Further, electronic components 25 other than the external wiring 11 are
A mounting hole 26 through which the lead terminal 25A is inserted is formed.

In the present embodiment configured as described above, for example, the external wiring 11 connected to a circuit board or the like is connected to the connection terminal 5.
For example, as shown in FIG. 5, when using a wiring cord 13 in which a wire 12 is covered with an insulating tube 12A as the external wiring 11 as shown in FIG. By placing the left and right bent pieces 17 and 17 on the inside, respectively.
Then, the insulating tube 12A of the wiring cord 13 is crimped.
In this manner, the connection cord 6 is connected to the connection portion 6 of the connection terminal 5.
By soldering in a crimped state, the wiring cord 13 can be reliably positioned at the connection terminal 5 in the soldering operation, and the soldering operation is also easy. Also,
When connecting the connection terminal 5 and the wiring cord 13, a separate crimping terminal or the like for connection is not required, so that the number of parts can be reduced, the cost can be reduced, and the addition of the wiring cord 13 and the connection terminal is not required. Since the fastening work is not required, the assembling workability is excellent. Also, when crimping the wiring cord 13 as the external wiring 11 to the connecting portion 6, the bent pieces 17, 17 are arranged in a staggered manner, so that the bent pieces 17, 17 do not overlap and are securely wired. The cord 13 can be caulked. Moreover, a pair of left and right cuts 19, 19 and a cutout recess 20, respectively, are provided at the base of the bent pieces 17, 17 and both end edges of the bent pieces 17, 17, respectively.
When the bent pieces 17, 17 are bent and crimped, the bending process of each of the bent pieces 17, 17 is easy because the 20 is formed. As shown in FIG. 6, when connecting the lead terminal 15 composed of a plurality of thick conductive wires 14 to the connection terminal 5 as the external wiring 11, stress is applied to the connection terminal 5 and the wire 14 of the lead terminal 15. Nor. Further, a mounting hole 26 is formed in the flat plate portion 16, and as shown in FIG. 2, a lead terminal 25A of an electronic component 25 other than the external wiring 11 is inserted therethrough.
25 A can be soldered to the connection terminal 5. In this way, it is possible to simply connect only the external wiring 11,
The external wiring 11 and the other electronic component 25 can be connected to the common connection terminal 5, which is excellent in versatility.

Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment.
Various modifications can be made within the scope of the present invention.
For example, the shape of the terminal block, the number of connection terminals incorporated in the terminal block, the shape of the connection terminal, and the like may be appropriately selected.

[0015]

According to the terminal structure of the terminal block according to the first aspect of the present invention, the terminal block includes a connection terminal incorporated in the terminal block and an external wiring connected to the connection terminal, wherein the connection terminal is connected to the external wiring. And a pair of bent pieces that bend from both edges of the flat plate portion and caulk the external wiring, so that the external wiring can be reliably positioned at the connection terminals. In addition, since a separate connection terminal is not required, components can be reduced and cost can be reduced.

According to a second aspect of the present invention, in the terminal structure of the terminal block according to the first aspect, each of the bent pieces is bent inward.
Since the bent pieces are arranged at positions where they do not overlap, the external wiring can be securely crimped by the left and right bent pieces.

According to a third aspect of the present invention, in the terminal structure of the terminal block according to the first or second aspect, notch recesses are formed at both ends of the bent pieces at the front end side. Therefore, the bending process of the bent piece is easy during the caulking operation.

According to a fourth aspect of the present invention, in the terminal structure of the terminal block according to any one of the first to third aspects, the terminal structure of the electronic component other than the external wiring is provided on the flat plate portion. Since the mounting hole for inserting the lead terminal is formed, only the external wiring can be connected to the connection terminal mounted on the terminal block, or the external wiring and other electronic components can be connected to a common connection terminal. Is possible,
Excellent versatility.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a bottom surface of a terminal block according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a wiring member and an electronic component are connected to the connection terminal.

FIG. 3 is a plan view of the terminal block.

FIG. 4 is a side view of the terminal block.

FIG. 5 is a perspective view of a main part showing a state where a wiring cord is connected to the connection terminal.

FIG. 6 is a perspective view of a main part showing a state where lead terminals are connected to the connection terminals.

FIG. 7 is a perspective view of a main part showing a connection state between a conventional connection terminal and a wiring cord.

FIG. 8 is a perspective view of a main part showing a connection state between the connection terminal and a lead terminal;

[Explanation of symbols]

 1 Terminal Block 5 Connection Terminal 11 External Wiring 13 Wiring Cord as External Wiring 15 Lead Terminal as External Wiring 16 Flat Plate 17 Folding Piece 20 Notch Recess 25 Electronic Components 26 25A Lead Terminal 26 Mounting Hole

Claims (4)

[Claims] 1. A connection terminal incorporated in a terminal block, and an external wiring connected to the connection terminal, wherein the connection terminal is bent from a flat plate portion supporting the external wiring, and both edges of the flat plate portion. A terminal structure in a terminal block, comprising: a pair of bent pieces for caulking external wiring. 2. The terminal structure according to claim 1, wherein each of the bent pieces is arranged at a position where the bent pieces do not overlap when bent inward. 3. The terminal structure according to claim 1, wherein cutout recesses are formed at both ends of each bent piece on the front end side. 4. The terminal structure according to claim 1, wherein a mounting hole through which a lead terminal of an electronic component other than the external wiring is inserted is formed in the flat plate portion. .