JPS6019336Y2 - terminal mechanism - Google Patents

Description

[Detailed description of the invention] This invention relates to a terminal mechanism with a structure formed by pressing a thin plate material instead of a terminal mechanism whose structure is mainly machined, and aims to reduce processing man-hours and improve the efficiency of wiring work. With,
The object is to provide a terminal mechanism that can be stably fixed.

Figure 1 is a structural component diagram of a conventionally used terminal mechanism, and A in the same figure is a perspective view of a metal terminal A, which has a square head A, a cylindrical body opening, and cuts 8 and 2 in the body opening. Figure B is a partially sectional perspective view of an insulating base plate having a square hole and a circular through hole formed at the bottom thereof, and Figure C is a perspective view of an E-shaped retaining ring C.

Figure 2 shows the terminal a1 insulating base plate and E-type retaining ring C in Figure 1.
FIG. 2 is a perspective view showing a fitted state of the terminal a and the base plate with a part of the base plate in cross section in the terminal mechanism composed of the above.

That is, insert the mouth of the body of terminal a into the circular through hole of the base plate, stop it from turning with square head A and square hole E, and fit E-shaped retaining ring C into notch 8 to secure terminal a. Do not remove it.

Therefore, to connect the line, solder the lead wire to the groove in the second notch, and when connecting the line across the base plate, install a female thread on the square head and tighten the lead wire. Connect to square head A.

A drawback of the conventional terminal mechanism described above is the discontinuity of the processing process for the terminal a.

In other words, terminal a is a terminal that is manufactured from a square bar by machining such as lathe processing, milling processing, and tapping processing, and because the processing contents are different, the processing work is not continuous and causes an increase in man-hours. .

Furthermore, since the volume of the terminal is large, it takes time to heat up the soldering work during wiring, which hinders work efficiency.

In view of the above-mentioned points, the present invention uses an elastic thin sheet metal material to form a terminal by continuous press working, which greatly improves the drawbacks of the conventional terminal mentioned above. The use of thin sheet metal material has been devised to prevent the terminal from becoming unstable in fixation.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a diagram showing one example of parts constituting the terminal mechanism according to the present invention.

In the figure A, a rectangular elastic thin metal plate is bent into a similar U-shape at the center to form a window 2 that can house a square nut in a flat head 1, with both ends symmetrically widening. 1
This is a perspective view of a stepladder-shaped terminal d that becomes the pair of legs 3 and 3'.A hole 4 is provided in the center of the plane of the head 1 for passing a male screw to be screwed into a nut, and the diameter of this hole 4 and the window 2 are Legs 3, 3 connected to
The mutual spacing T between the root portions of the legs 3 and 3' is approximately the same length, and tongue-like protrusions 5 and 5' as shown are provided in the middle of each of the legs 3 and 3'.

Note that the notches 6 and 6' provided at the tips of the legs 3 and 3' are for soldering lead wires, and the shape thereof is arbitrary.

FIG. 3B is a perspective view of a square nut e, and it is effective to make the nut e a general-purpose square for universality.

In the figure C, a square recess 7 is provided on the upper surface to accommodate the similar U-shaped head 1 forming the window 2 of the terminal d, and the bottom of the recess 7 is stepped and a square hole 8 opens on the lower surface. This is a perspective view showing a part of an insulating base plate f, which has a recess 7 on the upper surface and a rectangular recess 9 that is approximately symmetrical to the square hole 8 on the lower surface. This shows the shape.

The square hole 8 has a shape that allows the legs 3, 3' of the terminal d to be inserted therein, and its diameter is preferably equal to the sum of the plate thicknesses of the legs 3, 3' and the distance T between them.

Figure 4 shows a terminal mechanism composed of the terminal d in Figure 3A, the square nut e in Figure 3B, and the insulating base plate f in Figure 3C.
FIG. 3 is a perspective view showing the assembled state with the front side of the insulating base plate f taken in cross section, similar to that shown in FIG.

Figure 4 shows that to configure the terminal mechanism, connect the square nut e to the terminal d.
The head 1 is inserted through the window 2 into the square hole 8 of the insulating base plate f by compressing the distance between the ends of the legs 3 and 3', and the head 1 is housed in the square recess 7.

The legs 3, 3' inserted into the square hole 8 expand outward due to elasticity, and the tongue-like protrusions 5, 5' contact the stepped bottom of the square recess 9, so the terminal d will not normally come out. .

The terminal mechanism constructed in this way is used by screwing the external wiring fixing screw g into the nut e through the hole 4 provided in the plane of the head 1. If the interval T is set so that the bases of the legs 3 and 3' are as close as possible to the circumference, it is effective to prevent the terminal d from being pulled out and to prevent play.

In addition, in the case where there is a large gap between the outer diameter of the screw g and the leg parts 3, 3', the leg parts 3, 3'
′ in the direction facing each other, the terminal d easily separates from the insulating base plate f, reducing reliability.

In the embodiments shown in FIGS. 3 and 4 above, the case where a square nut e is used has been described, but the head 1 is not necessarily limited to a square nut. It forms a similar U-shape so that it can be stored in accordance with the required nut.

Further, the method for preventing the terminal d from being removed is not limited to providing the protrusion 5.degree. 5'.

FIG. 5 is an example diagram showing another embodiment, in which protrusions 10, 10' are provided on the wall of the leg insertion hole of the terminal d' of the insulating base plate f',
The legs 11 and 11' of the terminal d' are provided with holes 12 and 12' that fit into the protrusions 10 and 10', respectively, and the terminal d' is prevented from being pulled out and is used as a locking part, which is shown in a schematic cross-sectional view. It is something.

FIG. 6 shows a peripheral edge 13, which is different from the peripheral edge continuous to the leg, in the top plane of the head 1' of the terminal shown with the leg part provided with the locking part omitted, and a direction opposite to the leg from 13.13'. FIG. 1 shows an example in which the end portions 14, 14' are provided by folding the end portions 14, 14', and at least one of the end portions 14, 14' is provided to enable connection of a flat connecting terminal.

As described above, in the terminal mechanism of the present invention, elastic thin metal plates are used for the terminals, and all machining is done by press working, so that the work is continuous, so that machining time can be reduced.

Furthermore, since the terminal is a thin plate, soldering is easy and the working time can be shortened.

In addition, the screw is screwed into the nut contained in the terminal head so that it almost touches the terminal leg, so the leg does not fall over even if subjected to force. The disconnection from the insulating base plate due to falling is eliminated, and as a result, the terminal can be prevented from coming off or rattling, which has the effect of improving reliability.

[Brief explanation of the drawing]

Figure 1 is a diagram of the parts constituting a conventional terminal mechanism, in which A is a terminal, B is an insulating base plate, and C is a perspective view of an E-type retaining ring, and Figure 2 is a composition diagram of the same terminal mechanism. , Fig. 3 is a parts diagram showing an embodiment of the terminal mechanism of the present invention, in which A is a terminal and B is a part diagram.
C is a perspective view of the square nut, C is a perspective view of the insulating base plate, FIG. 4 is a perspective view of the same terminal mechanism assembly, and FIG. 5 is a schematic cross-sectional view showing another embodiment of the locking part of the terminal removal stopper , FIG. 6 is an example diagram in which an end portion is provided on the terminal head. d, d'... terminal, 1, 1'... head, 2... similar U-shaped window, 3, 3', 11, 11
'... Leg, 5.5'... Tongue,
e... Nut, f, f'... Insulating base plate, 10, 10'... Protrusion, 12, 12'...
...hole, 14, 14'... end.

Claims (1)

[Scope of utility model registration request] An insulating terminal having a terminal made of an elastic thin metal sheet formed into a stepladder shape by bending it into a similar U-shape so as to accommodate a required nut, and a head and a pair of legs, and a hole into which the legs of the terminal are inserted. a base plate, a locking portion for preventing terminal removal provided in at least one of the legs and the hole, and a nut contained in the head that penetrates through the head and reaches between the legs. 1. A terminal mechanism characterized in that the terminal mechanism is twisted with a male screw to be screwed into the body, and the pair of leg portions are opposed to each other so as to almost circumscribe the outer diameter of the male screw.