JPS6344965Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a terminal plate of a three-terminal excitation coil such as a solenoid.

In a coil such as a solenoid that has two primary and secondary coils and protective diodes 4 and 5 as shown in Fig. 1, the three winding end wires 1, 2, and 3 of the coil and It is necessary to connect and secure a total of 10 conductors, including 4 diode terminals and 3 coil lead wires. Conventionally, as shown in FIG. 2, a printed circuit board 10 to which diodes 4, 5, coil lead wires 6, 7, 8, and winding end wires 1, 2, 3 are soldered is mounted on a coil winding 9. It was fixed with tape from above. With such a structure, the printed circuit board moves during taping, making it difficult to work. It is difficult to insert the winding terminal into the small hole of the printed circuit board. Soldering tends to be insufficient. The printed circuit board position is shifted.
It is necessary to sandwich an insulator between the coil winding and the printed circuit board, which requires materials and work processes. The tensile strength of the coil lead wire is weak.
Since the top of the diode is covered with an insulating material, it traps heat and has many disadvantages, such as increasing the temperature of the diode. The present invention provides a coil terminal plate to solve these drawbacks. This will be explained below with reference to the drawings. In order to make it easier to understand, common parts have been written with the same number as much as possible.

FIG. 3 is a perspective view showing the terminal board of the present invention, in which a is the whole and b is a partial enlarged view of side A. A concave notch 17 is formed approximately in the center of one side A of the opposite sides A and A' of a quadrilateral printed circuit board 10' (hereinafter referred to as the board), and the other sides are
A protrusion 18 is provided in a convex shape approximately in the center of A', and a pair of small notches 11, 12 and 13, 14 are provided on the other opposite sides B and B', respectively, at positions close to side A where the notch 17 is provided. , and a pair of small notches 15 and 16 are provided on one side, for example, side B, at a position close to side A' where the convex portion 18 is provided on the other opposite side. 20, 21, 22 are copper plated parts and soldered parts, 23, 24, 25, 26, 27, 28, 2
Reference numeral 9 denotes a small hole through which the diode and the end wire of the coil lead wire are passed and fixed by soldering.

FIG. 4 shows a state in which the terminal plate of the present invention shown in FIG. 3 is attached to a coil using a coil frame having the structure shown in FIG. 6, where a is a top view and b is a partial front view. The recess 17 of the substrate 10' fits into the projection 35 of the step 34 of the coil frame edge 30, and the projection 18 of the substrate 10' fits into the recess 33 of the coil frame edge 31, respectively. Then, the end surface 17' of the recess 17 of the board and the coil frame edge protrusion 35
The coil winding lead-out end wires 1 and 3 are drawn out from the gap between the coil winding wires 1 and 3, and the drawn-out end wires 1 are wound around the small notches 13 and 14 on the B side of the substrate 10' as shown in FIG. Similarly, for the lead-out end line 3, the small notch 11 on the B′ side,
12 as shown in Fig. 3, and then solder the H and H' parts. Furthermore, the lead-out end line 2 is drawn out from the small notch 16 on the B side, and then extends through the notch 15, as shown in FIG.
16 and solder the H'' part. The coil lead wire is pulled out from the recess 37 in the coil frame edge 31.

Furthermore, the present terminal board has a structure in which a bag-shaped groove is provided between the frame edge of the coil frame shown in FIG. 6, for example, the part including the outside of 30 and the inside part including the stepped part 34, and the lead-out end wire is inserted into the groove and pulled out. It can be used for coil frames.

According to the present invention, since the terminal plate is securely fixed to the coil frame while being isolated from the coil winding, there is no need for special electrical insulation means between the winding 9 and the terminal plate 10', and the heat dissipation effect of the diode is improved. This not only improves the quality of the winding, but also makes it easier to tie the winding lead-out end wires and solder them. Further, there is no fear that the terminal board will move, and the coil lead wire can be securely fixed.

FIG. 5 is an example of another implementation of the present invention. A small protrusion 19 is provided in the recessed cutout 17 on the A side of the substrate 10'.
FIG. 5a is a partial perspective view of this part. 5b is a top view showing the terminal plate attached to the coil frame of FIG. 7, and FIG. 5c is a front view. However, the terminal board in the drawing does not have any parts or end wires attached to it, and the drawing only shows the relationship in the installation of the terminal board. The end surface 19' of the small protrusion 19 is connected to the substrate 1.
The end surface 17' of the concave portion 17 is further recessed from the end surface 10'' of the recess 17 by the thickness of the coil frame edge 30. Therefore, the winding lead-out end lines 1, 3 has a structure that can be pulled out from the recess 17 of the substrate.

According to the terminal board of the present invention, it not only makes it possible to securely fix the terminal board and easily and reliably carry out the work of arranging the winding lead-out end wires, but also makes it possible to securely fix the coil lead wires and strengthen the tensile strength. This greatly contributes to improving coil reliability and reducing cost.

[Brief explanation of the drawing]

Figure 1 is a coil terminal wiring diagram. FIG. 2 is a plan view (a) and a partial front view (b) of a conventional coil terminal plate attached to a coil frame. FIG. 3 is a perspective view of a terminal board according to the present invention, where a is an overall view and b is a partial view. FIG. 4 is a top view (a) and a partial front view (b) of the terminal board according to the present invention attached to a coil using the coil frame of FIG. 6. FIG. 5 shows another embodiment of the present invention, in which a is a partial perspective view of a terminal plate, b is a top view, and c is a front view of the terminal plate attached to the coil frame of FIG. 1, 2, 3... Winding lead end wire, 4, 5... Diode, 6, 7, 8... Coil lead wire, 10,
10'...Printed circuit board, 11, 12, 13, 1
4, 15, 16...Small notch, 17...A side notch, 18...Protrusion, 19...Small protrusion, A, A',
B, B'... Opposite side of printed circuit board.

Claims (1)

[Claims for Utility Model Registration] 1. A concave notch is provided approximately in the center of one of the opposite sides A and A' of a quadrilateral printed circuit board, and a convex protrusion is provided approximately in the center of the other A' side. , a pair of small notches are provided on the other opposite sides B and B' near the A side of both sides, and a pair of small notches are provided on either of the sides B and B' near the A' side of the other opposite side. A coil terminal plate for a solenoid, etc., with a small cutout. 2. A coil terminal plate for a solenoid or the like as set forth in claim 1 of the utility model registration claim, wherein a small convex projection is provided in the A-side concave notch.