JPH0455422Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a type of terminal block in which wires are connected by screws on one side and elastic pressing legs on the other.

(Prior art) In this type of terminal block, the screw mounting surface formed on each terminal fitting is one surface, and the elastic pressing leg is housed in a leg accommodating portion having an insertion port for a printed circuit board, etc. ing.

(Problem to be solved by the invention) When a terminal block is incorporated into an electronic device, etc., depending on the mounting position of the device or terminal block, it may be more convenient to connect the wires from above, for example.
In some cases, it may be more convenient to connect the wires laterally. However, in the conventional example, the connection screw faces only in one direction, so if it is desired to connect from another direction, another terminal block having a connection screw in the corresponding direction is required, which is uneconomical.

In addition, in the conventional example, the end of the elastic pressing leg may be located inside the insertion opening of the printed circuit board, etc., and there is an inconvenience that the elastic pressing leg may be bent by the inserted printed circuit board, etc. Furthermore, in the case of the conventional example, the terminal fittings are deformed during manufacture, storage, transportation, and assembly, and these deformed terminal fittings are fixed to the insulating base, so the elastic contact force of the elastic pressing leg differs for each terminal fitting. It's inconvenient.

(Means for solving the problems) This idea solves these inconveniences.
That is, the chevron-shaped expansion guides 5, 5 are formed inward to the insertion opening 70 formed in the leg accommodating portion 7 of the insulating base 3, and the screw mounting surface 20 faces laterally, and the screw mounting surface 20 faces upward. A terminal fitting 2 is formed by a screw mounting surface 21, a lower surface 22, and elastic pressing legs 23, 23 extending from the screw mounting surface 21 facing upward and the lower surface 22. Saw teeth 25, 25 are formed on both side edges of the lower surface 22, and a pair of elastic pressing legs 23, 23 are bent inward to form a contact portion 26,
26 are brought close to each other, and the distance M between the end portions 27, 27 is formed to be slightly larger than the distance d between the top portions 50, 50 of the expansion guides 5, 5.
The terminal fittings 2 are press-fitted into each section 4 of the insulating base 3 from the front, and each sawtooth 25 is stuck and fixed to the insulating base 3, and the screw mounting surfaces 20 and 21 are exposed to the outside. The ends 27, 27 are expanded by the expansion guide 5,
It is characterized by being expanded and locked at 5.

(Example) As shown in Fig. 5, a conductive thin plate is punched out using a press and bent as the terminal fitting 2, and the screw mounting surface 20 faces laterally, and the screw mounting surface 2 faces upward.
1. Form a lower surface 22 and a mounting surface 21, elastic pressing legs 23, 23 extending from the lower surface 22, and drill a screw loose insertion hole 24 into the screw mounting surface 21.
1. Saw teeth 25, 25 are formed on both side edges of the lower surface 22, and a pair of elastic pressing legs 23, 23 are bent inward to bring the contact portions 26, 26 close to each other as shown by the three-dot chain line in FIG. and the distance M between the ends 27, 27
is formed to be slightly larger than the distance d between the tops 50, 50 of the expansion guides 5, 5, which will be described later, and each elastic pressing leg 2
3 to form a slit 28. Further, as shown in the second to fourth figures, a box-shaped leg accommodating portion 7 is integrally formed on the back surface of the insulating base 3, and a large number of partition walls 6, 6, 6...
erected to form a large number of sections 4, 4, 4...
Insert port 70 for printed circuit board P on the back side of leg housing 7
A groove 6 for inserting the printed circuit board P into each partition wall 6 is formed.
0, and a pair of upper and lower chevron-shaped expansion guides 5, 5 are provided to protrude inwardly from the inward edge of the insertion port 70 for each section 4. If you want to install each connection screw 1 upward, screw loose insertion hole 2 of screw installation surface 21
Insert the connection screw 1 from 4 and tighten the square nut 9.
In addition, if you want to install each connection screw 1 laterally, drill a screw loose insertion hole 24' in the screw mounting surface 20 as shown by the chain line in FIG. ', insert the connection screw 1 as shown by the two-dot chain line in FIG. Each sawtooth 25 is stuck and fixed to the partition wall 6 as shown in FIG. 3, and the screw mounting surfaces 20 and 21 are exposed to the outside as shown by solid lines in FIG. Note that at the start of the press-fitting, the elastic pressing legs 23, 2
Although the contact portions 26 and 26 of No. 3 are close to each other as shown by the three-dot chain line in FIG.
7, 27 meet the tops 50, 50 of the expansion guides 5, 5. Therefore, if it is press-fitted further, since M>d, the end portions 27, 27 are expanded outward by the expansion guides 5, 5, and are positioned outside the insertion groove 60 as shown by the solid line in FIG. The contact portions 26, 26 are locked to the expansion guides 5, 5, and are positioned in the fitting groove 60 with an interval slightly narrower than the thickness of the printed circuit board P. In FIG. 2, reference numeral 10 indicates a loose insertion hole for a mounting screw to a device or the like. In addition, in the above embodiment, the terminal fitting 2 is used in which the screw loose insertion hole 24 is pre-drilled in the upwardly facing screw mounting surface 21, but as shown in FIG. A loose insertion hole 24 may be drilled in advance, and a loose screw insertion hole 24' may be bored in the screw mounting surface 21 as required, or a loose screw insertion hole 24' may be drilled in advance in both screw mounting surfaces 20 and 21 as shown in FIG. Insertion hole 2
4, 24', and attach the connection screw 1 to the required direction.
Furthermore, it is possible to pass through the screws without having to drill loose screw insertion holes in both the screw mounting surfaces 20 and 21 in advance.
It may be bored in either of the holes when necessary, and the above-mentioned loose screw insertion hole may be made into a screw hole.

Next, to explain how to use the embodiment, the mounting screws (not shown) are inserted into the loose insertion holes 10, 10, screwed to the device, and the printed circuit board P is inserted into the insertion hole 70.
Insert it into the insertion groove 60. Here, the contact portion 26 of each elastic pressing leg 23 comes into elastic contact with the printed circuit. Also, connect the electric wire to the connection screw 1.

(Effects of the invention) This invention forms a screw mounting surface facing upward and laterally on the terminal fitting, and exposes the screw mounting surface from the insulating base, so it is convenient even though it is one type of terminal block. Wires can be connected from any direction. In addition, the terminal fitting can be fixed to the insulating base simply by press-fitting it from the front of the leg accommodating part, and the end of the elastic pressing leg is locked to the expansion guide, so that the end is located inside the insertion opening for the printed circuit board, etc. There is no inconvenience such as the elastic pressing leg being bent by the printed circuit board etc. that is inserted.
Printed circuit boards, etc. are inserted securely, and each terminal metal fitting is in a fixed position, so the elastic contact force at the contact part is uniform, and there is no possibility of contact failure, or conversely, the elastic contact force is too large to insert the printed circuit board, etc. There is no such inconvenience, and the terminal fitting can be attached easily, quickly and accurately.

[Brief explanation of the drawing]

The figures show an embodiment of this invention; Fig. 1 is a front view, Fig. 2 is a plan view of the same as above, Fig. 3 is an enlarged sectional view taken along A-A, Fig. 4 is a rear view, and Fig. 5 is a terminal. FIG. 6 is an enlarged perspective view of a modification of the terminal fitting, and FIG. 7 is an enlarged perspective view of another modification of the terminal fitting. 2... Terminal fitting, 3... Insulating base, 4... Compartment, 5... Expansion guide, 7... Leg accommodating part, 20,
21...Screw mounting surface, 22...Bottom surface, 23...Elastic pressing leg, 25...Sawtooth, 26...Contact part, 27
... end, 50 ... top, 70 ... insertion port, d,
M... Interval.

Claims (1)

[Scope of utility model registration request] Insertion port 70 formed in leg accommodating portion 7 of insulating base 3
The hemlock-shaped expansion guides 5, 5 are formed inward, and the screw mounting surface 20 faces laterally, the screw mounting surface 21 faces upward, the lower surface 22, and the screw mounting surface 21 faces upward. The terminal fitting 2 is formed by having elastic pressing legs 23, 23 extending from the lower surface 22, saw teeth 25, 25 are formed on both edges of the screw mounting surface 21 facing upward and the lower surface 22, and a pair of Elastic pressing leg 2
3 and 23 inward to bring the contact portions 26 and 26 close to each other and to increase the distance M between the end portions 27 and 27.
The terminal fittings 2 are press-fitted into each section 4 of the insulating base 3 from the front of the leg accommodating section 7, and each sawtooth 25 is stuck and fixed to the insulating base 3, the screw mounting surfaces 20, 21 are exposed to the outside, and the ends 27, 27 are expanded and locked by the expansion guides 5, 5. Terminal block.