JPS6044791B2 - Manufacturing method of terminal base - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a plurality of terminal portions 1a, lb... are formed by punching out a single metal plate 2 and integrally connected to each other with cutting allowances 3, 3... At the same time, the terminal parts 1a and lb
Cut the external terminals 4a, 4b... of 3, 3...
・Align and hang down in a line on the bottom side, cutting allowance 3, 3...
A part of each terminal part 1a, Ib... is bent to one side and the rest is stretched to the other side in the buried part 5a, 5b which is almost horizontal on the upper side. , 5 are embedded in the synthetic resin base body 6 by insert molding,
This method of manufacturing a terminal base is characterized in that the unnecessary cutting allowances 3, 3, etc. are then removed, and its purpose is to arrange multiple terminal parts with good mutual positional accuracy to form a single line. To provide a method for manufacturing a terminal base that can easily provide a terminal configuration.

For example, terminal bases such as relays have traditionally had a so-called daily line terminal configuration, and for this reason, the terminals are generally buried vertically around the base body, but in order to securely fix the terminals to the base body, A wall was built around the periphery of the base body, and the vertical part of the terminal was buried within this wall.

Therefore, the coils, leads, etc. must be housed and installed within the surrounding wall, making it difficult to install them, and the connection between these and the terminals must be made in a narrow space within the empty space. The disadvantage was that the connection was difficult and prone to be uncertain. The present invention aims to eliminate such conventional drawbacks, and will be described in detail below with reference to the accompanying drawings.

Terminal parts 1a, lb... of a long metal plate 2 for terminals are cut with cutting allowances 3, 3...
・Punch out in one continuous state. In this case, the parts of the terminal parts 1a, lb... that become the external terminals 4a, 4b, 4c... are all located on one side of the cutting allowance 3, 3..., and the remaining parts are all located at the cutting allowance 3. , 3... are located on the other side. Next, as shown in Fig. 2, cutting allowances 3, 3... and external terminals 4 are cut.
a, 4b... downward and cut the cutting allowance 3, 3.
Bend some of the terminal parts 1a to 1d to one side and the remaining terminal parts le to 1 to the other side almost horizontally at a slightly upper part of... The horizontal portions close to . In this case, if the tips of one of the terminal portions le to lh are connected with the auxiliary cutting margin 7, horizontal bending of the terminal portions le to lh is facilitated. In addition, in the example illustrated above, eight terminal portions 1a to lh are formed at one pitch, and the terminal portions 1a to 1d and terminal portions 1e to 1h are arranged in a point-symmetric manner with respect to each other. It is located. 8 is a protruding piece for positioning or marking during cutting or molding.

Next, the embedded portions of the terminal portions 1a to 1h corresponding to one pitch are embedded in the base body 6 made of thermoplastic or thermosetting synthetic resin by insert molding. Next, the external terminals 4a, 4b, etc. of cutting allowances 3, 3... and auxiliary cutting allowances 7, 7..., etc.
Then, a terminal base is obtained by cutting off the portions of the terminal portions 1a, 1b, . In this case, the external (lower) terminals 4a to 4h of the terminal portions 1a to 1h are arranged in a straight line as shown in FIG. 2, forming a single line terminal configuration. In addition, FIG. 4 shows that seven terminal parts 1a to 1g are buried and fixed in the base body 6 in horizontal buried parts 5a to 5g, and the external terminals 4a to 4g are placed downward in a row from the lower center of the base body 6. It is arranged in a row and hangs down.
Similarly to the above, cut the external terminals 4a to 4g with a cutting allowance of 3.
3... are integrally connected, and the cutting allowances 3, 3... are removed after insert molding.

In the example shown in FIG. 4, the terminal parts 1a and 1g are used as fixed contact terminals, and fixed contacts 9 and 10, which serve as magnetic poles on both sides of the permanent magnet 16, are connected to these by welding or the like.
The lead wires 12, 12, etc. of the coil 11 are wound around the coil terminals b, 1c, 1e, 1f as coil terminals as shown in FIG. It is connected and fixed to the terminal portion 1d by welding or the like, and its tip is arranged so as to be switchable between the fixed contacts 9 and 10 as shown in FIG.

After each of these members is assembled, the shield case 14 and cover 15 are covered and fixed. In the case of FIG. 3, the reed relay is assembled in the same manner as in FIGS. 4 to 6 except that the external terminals 4d and 4e are used as common terminals. It can also be used as a base body for other types of relays. In the present invention, as described above, a plurality of terminal parts are formed by punching out a single metal plate so as to be integrally connected to each other with a cutting allowance, and a part of this is formed into a synthetic resin base by insert molding. Since the cutting allowance is removed after embedding in the main body, each terminal part is fixed to the base main body with a certain positional relationship maintained with respect to the cutting allowance. This improves positioning accuracy, and since the external terminals (legs, pins) of the terminal section are aligned and hanging down in a line below the cutting allowance, the external terminals are aligned in a line, unlike conventional dial lines. A terminal base having a lined-up single-line terminal configuration is obtained, and it is possible to manufacture a terminal base that can be easily inserted into a socket or the like. Also, in this case, if you align the top end of the cutting allowance with the parting line on the bottom of the base body,
This prevents the occurrence of burrs on the upper end surface of the cutting allowance during molding of the base body. Furthermore, a part of each terminal part is bent and stretched to one side and the rest to the other side in the almost horizontal buried part above the cutting allowance, and this buried part is inserted into the base body. With this horizontal buried part, even if the base body is thin, a sufficient buried length can be secured, and the buried part and the external terminal are almost perpendicular, making it possible to securely and firmly fix the terminal part to the base body. In addition, since the base body can be formed into a flat plate shape in this way, the base body obtained by the present invention can accommodate coils, leads, etc. in a narrow space inside the hollow, unlike the conventional box-shaped base body with a peripheral wall. There is no need to attach or connect the parts, and there is a sufficiently wide space with the upper and outer sides open so that jigs and tools can be easily operated to attach and connect each member. This has the advantage that welding, winding of lead wires, soldering, etc. to the terminal portion can be performed easily, reliably and firmly, and moreover, without damaging the base body due to heat or the like. In addition, if you simply want to obtain a single line terminal configuration, it is possible to use two or more types of terminal boards or two or more of the same child board and insert mold them into the base body at the same time, but each terminal board The positional accuracy between the positions is better in the case of the present invention. In addition, in the case of a 2-winding coil, connect the coil terminals to 4 as shown above.
Instead of using a main coil, three coils may be used, one of which may be used as a common coil terminal. In this way, the external terminals of the terminal parts are arranged in a line below the cutting allowance and are hung down, and a part of each terminal part is placed to one side and the rest is placed in the almost horizontal buried area above the cutting allowance. After bending and stretching it to the other side, this buried part was buried in the synthetic resin base body by insert molding, and then the unnecessary cutting allowance was removed, so after covering the buried part with synthetic resin, the adjacent By appropriately selecting and cutting the cutting allowance between the terminal parts, it is possible to make one of the two coil types an independent terminal or a common terminal, and in this way, various terminal configurations can be arbitrarily obtained after molding. Terminal bases with various terminal configurations can be manufactured at low manufacturing cost using one type of mold without the need to use various types of molds. Moreover, the buried portions that are bent and expanded on both sides are buried within the base body, and the external terminals are aligned in a line and hang down from the center of the base body, so the external terminals are placed on the sides of the base body. The external terminals can be brought out within the floor surface without protruding from the side, and therefore even if there are a large number of terminals, they can be processed within the floor surface, making it possible to realize miniaturization and space saving. In addition, since the terminals are bent at right angles within the resin of the base body, they are difficult to come off and no force is transmitted to the internal terminals, so they can have stable characteristics. Furthermore, since the left and right terminal portions can be formed using a single metal plate, it is possible to standardize the left and right terminal plates, and to centralize the functions of components having coil terminals on the terminal plate.

[Brief explanation of the drawing]

1 to 3 are schematic process explanatory diagrams of one embodiment of the present invention, FIG. 4 is an exploded perspective view of a reed relay using a terminal base obtained by another embodiment of the above, and FIG. The figure and Fig. 6 are a cross-sectional view and a vertical cross-sectional view of the same reed relay as above. In the figure, 1a, 1b, .
are cutting allowances, 4a, 4b... are external terminals, 5a,
5. b... is a buried portion, and 6 is a base body.

Claims (1)

[Claims] 1. Forming a plurality of terminal parts by punching a single metal plate so as to be integrally connected to each other with a cutting allowance, and aligning and hanging the external terminals of the terminal parts in a line below the cutting allowance,
A part of each terminal part is bent and stretched to one side and the rest to the other side in the almost horizontal buried part above the cutting allowance, and this buried part is inserted into the synthetic resin base body by insert molding. A method of manufacturing a terminal base, which is characterized by burying the terminal base and then removing unnecessary cutting allowance.