JP3443933B2 - Connection equipment for electrical equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection device for an electric device for connecting terminals of an electric device such as an electromagnetic contactor to wiring on a printed circuit board. 2. Description of the Related Art The position of each terminal of an electric device is, for example, shown in FIG.
Main terminal 11 and coil terminal 1 of electromagnetic contactor 1A shown in FIG.
2, the height from the mounting plate 2 such as a switchboard to which the electromagnetic contactor 1A is mounted is different.
It is inconvenient to connect these terminals 11 and 12 to wiring on a printed circuit board on the same plane. For this purpose, for example, an electromagnetic contactor described in Japanese Patent Application Laid-Open No. 1-281632 has been proposed. As shown in FIGS. 9 and 10, the electromagnetic contactor 1B has a main terminal 11 and a coil terminal 12 pulled out on the upper surface of the head of the electromagnetic contactor, and these connection surfaces are arranged on the same plane. In order to connect the terminals 11 and 12 of the printed circuit board 1B to the wiring 31 of the printed circuit board 3, the printed circuit board 3 provided with the wiring 31 and the hole 32 in advance facing the terminals 11 and 12 of the electromagnetic contactor 1B is provided.
Are placed on the upper surfaces of the terminals 11 and 12 of the electromagnetic contactor 1B,
A terminal screw is inserted into the hole 32 of the printed circuit board 3 and tightened so that the wiring 31 of the printed circuit board 3 is connected to the terminals 11 and 12 of the electromagnetic contactor 1B. [0003] The electromagnetic contactor described in the above publication is easy to connect to the wiring of the printed circuit board, but the position of the printed circuit board is limited to the upper surface of the electromagnetic contactor. There is. On the other hand, with the increase in the current carrying capacity of the printed circuit board itself, the electromagnetic contactor connected to the former has a rated current of 30 A or less in the past, but 50 to 60 A,
In addition, it has become necessary to have a 100A class. However, among electromagnetic contactors mounted or connected to a printed circuit board, a large electromagnetic contactor has less demand than a small electromagnetic contactor, so a small electromagnetic contactor for printed circuit board connection as described in the above-mentioned publication is used. It is unreasonable in terms of cost to apply the configuration to a large one and stock it. Accordingly, the present invention provides a connection device for an electric device in which a terminal of the electric device having a terminal for normal electric wire connection can be easily connected to a wiring of a printed circuit board arranged near the terminal. It is intended to do so. In order to achieve the above-mentioned object, a connection device for an electric device according to the present invention has an insertion terminal receiving portion which is connected to a wiring of a printed circuit board and has an open upper end surface. An electric terminal comprising a printed board side terminal receiving portion, an inverted L-shape, a lateral portion connected to a terminal of an electric device, and a terminal insertion portion at a tip end of the vertical portion formed of a connection piece inserted into the insertion terminal receiving portion. In a connection device for an electric device comprising a device-side terminal insertion portion, a single or a plurality of printed circuit board-side terminal reception portions and an electric device-side terminal insertion portion are provided with a single or a plurality of insertion terminal reception portions and a terminal insertion portion. collected by the the housing and the unit structure, and the printed circuit board side terminal receiving portion fixed attached to the printed circuit board, the side surface of said electric apparatus-side terminals feed write-section, the Uni A concave portion is provided for each unit, and the concave portion is fitted into both the concave portion of the printed circuit board side terminal receiving portion and the electrical device side terminal insertion portion, and the two units are combined by a coupling piece. This is convenient. In the electric device connecting apparatus of the present invention, the length of the vertical or horizontal portion of the inverted L-shaped connecting piece of the electric device side terminal insertion portion is determined by the wiring between the terminal of the electric device and the printed circuit board. From the positional relationship with the connection part, it is determined that the tip of this connection piece is correctly inserted into the insertion terminal receiving part, and simply inserting this connection piece into the insertion terminal receiving part on the printed circuit board side, the terminal of the electric device Can be connected to the wiring of the printed circuit board arranged near this terminal. In addition, a single or a plurality of insertion terminal receiving portions are housed, and a unitized printed circuit board side terminal receiving portion and a single or a plurality of connection pieces are housed and a unitized electric device side terminal inserting portion is coupled to each other. Since the units are integrated, connection can be made easily. FIG. 1 to FIG. 4 show an embodiment of a connection device for electric equipment according to the present invention. FIG. 1 is an exploded perspective view including a partially cutaway cross section, and FIG. 2 is an electric equipment shown in FIG. FIG. 3 is a side cross-sectional view when the terminal of the electric device is connected to the wiring of the printed circuit board by the connection device of FIG. 3, FIG.
FIG. 4 is a front sectional view of a main part of a case on the side of the electric device in FIG. In FIG. 1 to FIG. 4, reference numeral 1A denotes an electromagnetic contactor as an electric device having a terminal for connecting an ordinary electric wire, and has a main terminal 11 and a coil terminal 12. Reference numeral 4 denotes a connection device for an electric device that connects the main terminal 11 of the electromagnetic contactor 1A to the wiring 31 of the printed circuit board 3, and includes a printed circuit board side portion 4A and an electric device side portion 4B. The printed circuit board side 4A includes a case 41 having an open upper surface,
A columnar connection boss 42 penetrating the lower surface of the case 41
And a screw 43 provided on the lower end surface of the connection boss 42.
And an insertion terminal 44 provided on the upper end surface of the connection boss 42. On the other hand, the lower side of the electric device side portion 4B is open, and this opening fits into the opening of the upper surface of the case 41 of the printed circuit board side portion 4A. With the case 45 to fit,
The vertical end 461 is inserted into the insertion terminal 44 of the printed circuit board side 4A, and a hole 462 is formed in the horizontal end.
And a connection piece 46 provided with a. Then, the case 41 of the printed circuit board side portion 4A and the electric device side portion 4B.
And 45 are each divided into four chambers in FIG. 1 according to the number of main terminals 11 of the electromagnetic contactor 1A, and each connection piece 4
6 is fitted in a concave portion 451 provided in the chamber of the case 45 with a convex portion 463 provided at the center of the lateral portion thereof, and is housed in each chamber of the case 45, respectively. [0009] The connection procedure of the electrical device by the connection device is as follows. First, a hole 32 is provided in advance at a place where the wiring 31 of the printed board 3 is connected.
The connection boss 42 of the printed circuit board side portion 4A is connected to the wiring 31 of the printed circuit board 3 by inserting a screw 43 into the wiring board 31. Next, the terminal screw of the main terminal 11 of the electromagnetic contactor 1A is inserted into the hole 462 at the end of the lateral portion of the connecting piece 46 of the electrical device side 4B and tightened. Connect to main terminal 11. And this electric equipment side part 4B
Is inserted into the insertion terminal 44 of the printed circuit board side 4A from above, and after the insertion, the electromagnetic contactor 1A is fixed to the mounting plate 2 such as a switchboard. In this case, the length H of the vertical portion and the length L of the horizontal portion of the connection piece 46 are determined in advance based on the positional relationship between the main terminal 11 of the electromagnetic contactor 1A and the connection portion of the wiring 31 of the printed circuit board 3.
It is determined that the distal end portion 461 of the connection piece 46 is correctly inserted into the insertion terminal 44. Thus, the main terminal 11 of the electromagnetic contactor 1 can be easily connected to the wiring 31 of the printed circuit board 3. Further, the connection of the coil terminal 12 of the electromagnetic contactor 1A is performed by a similar connection structure. In this case, since there are two coil terminals, this connection structure is composed of two connection pieces 46 and connection bosses 42,
The length H of the vertical portion and the length L of the horizontal portion of the connection piece 46 are determined according to the positional relationship between the coil terminal 12 and the connection portion of the wiring 31 of the printed circuit board 3. When the connection structure of the main terminals 11 and the connection structure of the coil terminals 12 are located at the same position on the printed circuit board 3, the length of the lateral portion of one of the connection pieces 46 is changed to be shifted. FIGS. 5 and 6 show different embodiments of the connection apparatus for electric equipment according to the present invention. FIG. 5 is an exploded perspective view, and FIG. 6 shows the connection structure of the electric equipment to the printed circuit board by the electric equipment connection structure of FIG. It is a side sectional view at the time of doing. 5 and 6 show a connection device for an electric device corresponding to the case where the number of the main terminals 11 of the electromagnetic contactor is three, and this connection device is different from the connection device for the electric device shown in FIGS. The point is that a spring 47 for increasing the contact pressure of the insertion terminal 44 provided on the upper surface of the connection boss 42 of the printed circuit board side 4A is provided. The insertion terminal 44 and the lower end 46 of the connection piece 46 inserted into the insertion terminal 44 by the spring 47
1 is increased, and the contact resistance is reduced, so that a large current can be supplied. In FIG. 5 and FIG. 6, the inverted L-shaped connection piece 46 can be supplied with a large current.
A horizontal portion 46A made of a thick plate having a large cross-sectional area is connected to a vertical portion 46B made of a rod, and a tip 461 of the vertical portion 46B is configured as a contact point. FIG. 7 is an exploded perspective view showing still another embodiment of the connection apparatus for electric equipment of the present invention. FIG. 7 shows a connection device for an electric device corresponding to the case where the number of the main terminals 11 of the electromagnetic contactor is two, and this connection device is to be called a unit type and has a connection piece and a connection boss each. The structure (hereinafter, referred to as a connection structure unit) is formed by connecting one and the other fitting portions 48A, 4 provided on both side surfaces of the case 45 of the electric device side portion 4B of the connection structure unit.
8B are sequentially connected, and the case 45 of the electric device side 4B is connected.
The coupling pieces 4 are provided in concave portions 49A and 49B provided on the front surface of the
9C are fitted together to form a connection structure by integrating two connection structure units. In this case, of course, the number of connection structure units is not limited to two. In this manner, a connection device corresponding to one or more terminals of an electric device can be constituted by one type of connection structure unit. According to the electrical equipment connection apparatus of the present invention, the terminals of the electrical equipment having ordinary terminals connected by electric wires are easily connected to the wiring of the printed circuit board arranged near the terminals. Since it is possible, there is no need to prepare an electric device exclusively for wiring the printed circuit board, and the cost is reduced. Further, by unitizing this connection device, a connection device corresponding to one or more terminals of an electric device can be configured with one type of connection structure unit, and the cost is further reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a connection device for electric equipment according to the present invention, including a partially cut-away cross section. FIG. FIG. 3 is a cross-sectional side view of the terminal of the device connected to the wiring of the printed circuit board. FIG. 3 is a perspective view of a connection piece on the side of the electric device in FIG. 1 FIG. FIG. 5 is an exploded perspective view showing a different embodiment of the electric device connecting device of the present invention. FIG. 6 is a diagram showing a case where the electric device terminal is connected to the wiring of the printed circuit board by the electric device connecting device of FIG. FIG. 7 is an exploded perspective view showing still another embodiment of the connection device for electrical equipment of the present invention. FIG. 8 is a perspective view of a normal electromagnetic contactor. FIG. FIG. 10 is a cross-sectional view showing a conventional example of the electromagnetic contactor shown in FIG. 10; FIG. Touch device (electrical equipment) 11 main terminal (pin) 3 connection structure of printed circuit board 31 wiring 4 electrical device 4A PCB side 42 connecting the boss 44 insertion terminal 4B electrical equipment side 46 connecting piece 47 spring

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-251876 (JP, A) JP-A 61-38777 (JP, U) JP-A 55-135470 (JP, U) JP-A 58- 40802 (JP, U) JP-A 1-159369 (JP, U) JP-A 63-139744 (JP, U) JP-B 49-34272 (JP, B1) (58) Field surveyed (Int. ⁷ , DB name) H05K 1/18 H01H 45/14 H01H 50/14 H01R 12/04 H01R 31/06

Claims (1)

(57) [Claim 1] A connecting device for connecting a terminal of an electric device to a wiring of a printed circuit board, wherein the connecting terminal is connected to the wiring of the printed circuit board and has an open upper end surface. A terminal receiving portion having a printed board side, an inverted L-shape, a lateral portion of which is connected to a terminal of an electric device, and a terminal insertion portion at a longitudinal end of the terminal receiving portion includes a connection piece inserted into the insertion terminal receiving portion. In a connection device for an electric device comprising an electric device side terminal insertion portion, a single or a plurality of printed board side terminal reception portions and an electric device side terminal insertion portion are connected to a single or a plurality of insertion terminal reception portions and a terminal insertion portion. and a and the accommodated units structure parts, and the printed circuit board side terminal receiving portion fixed attached to the printed circuit board, the side surface of said electric apparatus-side terminals feed write-section, said unit A concave portion is provided for each, and the printed circuit board-side terminal receiving portion and the electric device-side terminal insertion portion are fitted into both of the concave portions, and are combined by a coupling piece that integrates the two units. Connection device for electrical equipment.