JPS61198579A - Terminal base - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a terminal block mounted and fixed on a printed circuit board.

[Technical background of the invention and its problems]

Conventionally, in this type of terminal block, the
As illustrated in the figure, a plurality of terminal block fittings 2t are arranged on the terminal block main body 1 and secured with screws 3, and the pole portions of each of the fittings 2 are shown in FIGS. 25 to 27. As shown, the printed circuit board 5 is fastened with both fixing screws 4.
Some devices have a structure in which the copper foil pattern 2 is inserted into the printed circuit board 5, soldered 6, and printed wiring is connected to the copper foil pattern 2 on the printed circuit board 5.

However, in a terminal block having such a conventional structure, the pole part 2a of the terminal fitting 2 has a simple shape of a bar shaft, so the terminal block main body 1 is Mounted on printed circuit board 5! Then, pass through the A1 mounting hole Iatn set screw 4 and 111 and tighten it, and the automatic soldering is done with # (
When trying to solder each pole part 2a using a method (not shown), the soldered surface of the printed circuit board 5 expands due to the heat of the molten solder, as shown in FIG. Soldering with the main body bent in the direction of 1 measurement 6
Therefore, soldering is done after cooling the printed circuit board 5.
As shown in FIG. 30, the soldering part 6 contracts in the direction of the solid line arrow and tries to return to its original state, so tensile stress is generated in the soldering part 6 and in the direction shown by the solid line arrow in FIG. 31.

Due to the presence of such tensile stress and vibrations of the vehicle over time, the soldering part 6 gradually breaks down, and eventually the soldering part 6 cracks or the pattern 7 peels off. There was a problem that this caused electrical failure.

[Purpose of the invention]

The present invention has been made under the above circumstances, and improves the terminal fittings to ensure strong attachment to the printed circuit board, and prevents mechanical defects in the soldering parts. The purpose of this invention is to provide a terminal block that can

[Summary of the invention]

One aspect of the present invention is to achieve the above object.

In a terminal block in which a suitable pattern is placed on a printed circuit board with printed wiring and a plurality of pole parts are soldered to the pattern via a terminal fitting, the terminal fitting connects the printed circuit board and the terminal block body. The soldering can be mechanically locked in the front, and the soldering prevents the printed circuit board from deforming due to heat.

[Embodiments of the invention]

The present invention will be explained below with reference to embodiments shown in FIGS. 1 to 21. In the illustrated embodiment according to the present invention, the same reference numerals are used for the parts whose configurations overlap with those of the conventional structure shown in FIGS. 22 to 27, and the explanation thereof will be omitted.

1 to 8 show a first embodiment of the present invention.

In other words, VC from Figure 1 to Figure 4.

Pole part 2a of the terminal fitting 2 screwed to the shikodai main body 1
is formed in the engaging portion 8 having a U-shaped cross section, and as shown in FIGS. 5 and 6, when the terminal block main body 1 is placed on the printed circuit board 5 and fixed with the fixing screw 4, As shown in FIG. 7, the engaging portions 8 formed on the pole portions 2a of the terminal fittings 2 are individually cut in advance at the trouble-prone positions of each pattern 7 of the printed circuit board 5. #9, or the edge of the notch 10 cut in a concave shape between each pattern 2...9 as shown in FIG. 8, and soldered 6. It is something that you have.

9 to 11 show a second implementation row according to the present invention, in which a pole portion 2aYt of the terminal fitting 2 is formed on the twistable plate-like tip portion 11, and is provided through the printed circuit board 5. After being inserted into the elliptical hole 12, it is twisted in the horizontal direction to lock it so that edge soldering 6 can be performed.

Furthermore, FIGS. 12 to 14 show a third embodiment of the present invention, in which the pole portion 2a of the terminal fitting 2 is formed into a bendable plate-like tip portion 13.

After being inserted into an elliptical hole 12 formed through a printed circuit board 5, it can be bent and edge soldered 6.

Furthermore, FIGS. 15 to 17 show a fourth embodiment of the present invention, in which the pole portion 2a of the terminal fitting 2 is formed with a removable locking piece 14/C having spring elasticity. , it is press fit into the oval hole 12 provided through the printed circuit board 5 against the repulsive force of the spring, and after insertion, the oval hole 12 is opened outward from the hole diameter width to contact and lock, so that the edge soldering 6 can be performed. This is what I did.

Further, FIGS. 18 to 21 show a fifth embodiment according to the present invention, in which the pole part Jam of the terminal fitting 2 is formed on the flange part 15, and the flange part 15'? t, as shown in FIG.
As shown in 11k, after being inserted into the circular hole 17 of the printed circuit board 5, the center position is shifted and engaged, and soldering 6 can be performed to the L repattern 7.

Therefore, according to the above configuration, the terminal block main body 1 is placed on the printed circuit board 5, and the pole portion 2a of the terminal fitting 2 disposed on the terminal block main body 1? I-Since the printed circuit board 5 is temporarily fixed by fitting, twisting, bending, or engaging, soldering does not bend even when the printed circuit board 5 is heated. On the other hand, even if the terminal block body 1 side is curved, the printed circuit board 5 is
Since the soldering follows the shape of the part 6 and is attached, it becomes possible to prevent the generation of tensile force at the part 6.

〔Effect of the invention〕

As explained above, according to the present invention, the terminal block main body and the printed circuit board are fixed to each other by the terminal fittings before soldering, so that unlike conventional soldering, tensile stress is not generated in the parts. By using this method, soldering has the immediate effect that electrical and mechanical defects due to cracking of parts and peeling of patterns do not occur during long-term use.

[Brief explanation of drawings]

Figure 1 is a front view showing the first embodiment of the terminal block according to the present invention, Figure 2 is a side view, Figure 3 is a front view of the terminal fitting, and Figure 4 is a front view of the first embodiment of the terminal block according to the present invention.
The figures are also side views, Figures 5 and 6 are explanatory diagrams showing the state of mounting and fixing on the printed circuit board, Figures 7 and 8 are bottom views showing the state of soldering, and Figure 9 is the invention of the present invention. A side view of the terminal fitting according to the second embodiment, FIG. 1O, and FIG.
FIG. 2 is a side view of a terminal fitting according to a third embodiment of the present invention, FIGS. 16 and 17 are side views of the terminal fittings showing the fourth embodiment, and FIGS.
The figure is a side view of a terminal fitting according to the fifth embodiment of the present invention, FIGS. A front view showing an example, FIG. 23 is a side view, FIG. 24 is a bottom view, FIGS. 25 to 27 are explanatory diagrams showing the state of soldering to a printed circuit board, and FIGS. 28 to 31 is an explanatory diagram in which the process of soldering to a printed circuit board is omitted. 1... Terminal block body, 2... Terminal fitting, 2a...
Pole part, 5... Printed circuit board, 6... Soldering part, 7
···pattern. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Area.

Claims (4)

[Claims] (1) In a terminal block in which a suitable pattern is placed on a printed circuit board with printed wiring and a plurality of pole parts are soldered to the pattern via a terminal fitting, the terminal block is connected to the printed circuit board with the terminal fitting. A terminal block characterized in that the terminal block is configured to be mechanically locked to the terminal block body before soldering. (2) The terminal according to claim 1, characterized in that the pole part of the terminal fitting is formed with an engaging part having a U-shaped cross section into which a groove or notch of a printed circuit board fits. The stand. (3) The terminal block according to claim 1, wherein the pole part of the terminal fitting is formed into a bent part or a twisted part so that it can be inserted and locked onto a printed circuit board. (4) The insertion portion of the terminal fitting into the pole printed circuit board is formed into a wedge shape with spring elasticity that opens toward the terminal block main body side. Terminal block listed.