JPH0327344Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a terminal block in which a plurality of terminal fittings having spring legs are attached and are formed in a step-like manner.

[Conventional technology]

Conventionally, a large number of terminal fittings each having a spring leg have been attached to a terminal block for a printed circuit board or a connector type terminal block. In the case of the terminal fitting, a conductive thin plate is bent into a substantially L-shape, and a connection means such as a screw hole for screwing a connection screw is provided on the top plate;
The spring legs are positioned below the top plate. Then, provide upper and lower through holes in each section of the terminal block,
Terminal fittings are inserted into these upper and lower through-holes and fixed by means such as saw teeth. In this case, the connection means faces the flat surface of the terminal block, the spring legs face the bottom surface of the terminal block, and the printed circuit board or the like is sandwiched between the spring legs from below. However, depending on the equipment to which the terminal block is installed, there may be cases where it is desired to have the wiring means facing the plane of the terminal block and to clamp the printed circuit board, etc. to the spring legs from the front or rear. Not accomplished. Terminal fittings with spring legs that protrude forward or backward, rather than downward, relative to the top plate must be installed.

In addition, in order to attach a large number of terminal fittings to a small area, a terminal block has conventionally been used in which the terminal block is formed into steps, and each step has a plurality of sections.

It is extremely difficult to attach the above-mentioned terminal fitting with the spring legs protruding forward or backward from the top and bottom of the terminal block. The hole that accommodates the top plate and the hole that accommodates the spring legs intersect at right angles,
This is because the upper section is located above the hole that accommodates the lower spring leg.

As a precedent example for solving the above problem, a terminal fitting is divided into a top plate and a spring leg, the top plate is inserted into a vertical hole from the top of each section, and the terminal fitting is inserted into a horizontal hole perpendicular to the vertical hole, either forward or backward. There is a series of terminal blocks in which the spring legs are inserted from the opposite direction and the top plate and the spring legs are connected within the terminal block.

[Problem that the invention attempts to solve]

In the case of the preceding example, 1 for each terminal fitting.
The pair of split fittings must be inserted into the vertical hole and the horizontal hole, which is time-consuming and requires skill to accurately connect the top plate and the spring leg within the hole. , the so-called contact resistance increases,
Voltage may drop.

[Means for solving problems]

This idea eliminates these inconveniences,
That is, a plurality of sections 1c, 1c, . . . are formed in each step 1a, 1b of one insulating base 1 formed in a step shape, and a top plate 2 and a spring leg 3 are provided in each section 1c, 1c, . Upper and lower terminal fittings 4a, 4
In a terminal block in which a terminal block is provided with a screw hole 6 for screwing a wiring screw 5 into each upper plate 2, and each spring leg 3 projects forward of the upper plate 2, the upper terminal A vertical surface portion 7 is interposed between the upper surface plate 2 and the spring leg 3 of the metal fitting 4a, and the lower terminal metal fitting 4
A bulging portion 8 is provided in the middle of the spring leg 3 of b, and upper and lower sections 1c, 1 are partitioned by left and right walls 21, 21.
Storage grooves 1d and 1 open upward and forward to c.
d', a mounting part 9 on both side edges of the top plate 2, a locking part 10 that abuts the surface of the top plate 2, and a locking protrusion 11 on the rear edge of the top plate 2. Insert the terminal fittings 4a and 4b for the upper and lower stages from the front of the base 1 into the housing grooves 1d and 1d', place both side edges of each top plate 2 on the mounting part 9, and The end edge is locked to the locking part 11, the surface of each top plate 2 is brought into contact with the locking part 10, and the insulating cover 12 having the insertion port 31 is attached from the front of the insulating base 1 to close it. , and the contact surface portion 1 formed on the insulating lid 12
3 and the abutting portion 14 respectively lock the vertical surface portion 7 and the bulging portion 8.

[Configuration of Example]

The embodiment is a terminal block for a printed circuit board, and the upper terminal fitting 4a is formed by bending the rear edge of the top plate 2 made of a conductive thin plate at right angles to form a vertical piece 15, as shown in FIG. A vertical surface portion 7 is formed by bending the edge at a right angle, and the spring leg 3 is bent from the vertical surface portion 7 and protrudes forward of the top plate 2, and a screw hole 6 is provided for screwing the connection screw 5 into the top plate 2. to be screwed on.

As shown in Figure 11, the terminal fitting 4b for the lower stage is made by bending the rear edge of the upper plate 2 made of a conductive thin plate at right angles to form a vertical piece 15, and bending the spring leg 3 from the front edge. The legs 3 are made to protrude to the front of the top plate 2, the bulges 8, 8 are made to protrude from both sides in the middle of the spring legs 3, and the screw holes 6 for screwing the connection screws 5 are screwed into the top plate 2. .

The insulating base 1 consists of two stages, upper and lower, as shown in Figures 1, 3, and 5, and a large number of partition walls 1 are attached to each stage 1a, 1b.
6, 16... and upper horizontal plate 18, front and rear partition plate 1
9 is integrally formed to form sections 1c, 1c...,
Screw insertion holes 17', 17' (shown in the seventh figure) for attaching a terminal block to a chassis (not shown), etc. are bored in the outer projections 17, 17 of both end walls 16', 16', and each section 1c, 1c... are arranged in a staggered manner when viewed from the top as shown in the first figure. As shown in FIG. 4, the upper section 1c is formed with an accommodation groove 1d that is open at the top and the front, in which a locking protrusion 11 is provided protrudingly provided, and a fitting groove 20 for the vertical piece 15 is provided, and the accommodation groove 1d
mounting parts 9, 9 for locking both side edges of the top plate 2 are provided on the upper surfaces of the left and right walls 21, 21 (shown in the first and fourth figures),
As shown in the first, fourth and seventh figures, left and right walls 21, 21...
Projections 24, 24... are integrally formed on the front surface of the ridges 24, 24..., and round shafts 25, 25... are formed on every other projection 24, 24...
A locking portion 1 is formed integrally with the upper horizontal plate 18 and comes into contact with the surface of the upper plate 2 with the bottom surface of the upper horizontal plate 18 as shown in the third figure.
Set to 0. Lower section 1c as shown in the 1st and 6th illustrations
A housing groove 1d' which is open at the top and front is formed in the housing groove 1d', and a locking protrusion 11 is provided in the housing groove 1d'.
A fitting groove 20 is provided for the left and right walls 2 of the housing groove 1d'.
Mounting parts 9, 9 for locking both side edges of the top plate 2 are provided on the upper surfaces of 1 and 21, and a locking part 10 is provided that contacts the surface of the top plate 2 with the bottom surface of the front and rear partition plate 19, and the left and right walls An extension wall 21' having stepped portions 22, 23 is integrally formed in front of the walls 21, 21. In addition, as shown in the fourth and sixth figures, the front surfaces 21a of the upper left and right walls 21, 21
The front surface 21a' of the lower extension wall 21' is located further inward than the front surface 1' of the insulating base 1, and a gap 1'' is formed.

The insulating cover 12 is formed in steps as shown in FIGS. 4 and 6, and as shown in FIGS. , and a groove 2 for fitting the protrusion 24 into this strip 26.
7 or a fitting groove 27 and a fitting hole 28 for the round shaft 25 are provided, and a large diameter hole 29 is concentrically connected to the fitting hole 28 as shown in the 6th and 9th figures. As shown in the figure, a contact surface portion 13 for the vertical surface portion 7 is formed between the strips 26 and 26, and a third contact surface portion 13 for contacting the vertical surface portion 7 is formed between the strips 26 and 26, and a third contact surface portion 13 is formed for the lower stage of the insulating lid 12.
5, 8 A space 30 for accommodating the spring leg 3 as shown in the figure.
At the same time, an insertion opening 31 for the printed circuit board P is formed in the front wall 12', and second, fourth, sixth,
7, 8 As shown in the figure, from the back of the lower stage, insert the housing groove 1d.
Projecting pieces 32, 32, .
As shown in the figure, protrusions 33, 33, .
.

Next, a method of assembling the embodiment will be explained.

As shown in FIG. 6, the lower terminal fitting 4b is inserted into the receiving groove 1d' from the front of the insulating base 1. Here, the vertical piece 15 is fitted into the fitting groove 20, both side edges of the top plate 2 are placed on the mounting parts 9, 9, and the rear end edge of the top plate 2 is locked in the locking protrusion 11. , the front surface of the top plate 2 is in contact with the locking part 10 formed on the partition plate 19, and the spring leg 3 is located in the accommodation groove 1d' sandwiched between the extension walls 21', 21'. The end portion of the insulating base 1 protrudes from the front surface of the insulating base 1. Similarly, as shown in the fourth diagram, a terminal fitting 4 for the upper stage from the front of the insulating base 1 is shown.
a into the accommodation groove 1d. Here, the vertical piece 15 fits into the fitting groove 20, both side edges of the top plate 2 are placed on the mounting parts 9, and the rear end edge of the top plate 2 is placed in the locking protrusion 1.
1, and the front surface of the top plate 2 is fixed to the top back plate 1.
8, the spring leg 3 is located in the housing groove 1d sandwiched between the left and right walls 21, 21 of the upper part, and the end of the spring leg 3 is located from the front surface of the insulating base 1. All the spring legs 3 protrude and are located in a staggered manner when viewed from the front as shown in the seventh figure. Next, attach the insulating cover 12 to the insulating base 1 as shown by the arrows in FIGS.
It is inserted into the gap 1'' from the front, that is, the lid is closed, and is fixed to a predetermined location on the abutment surface between the insulating cover 12 and the insulating base 1 via an adhesive or by well-known ultrasonic bonding.Here. As shown in FIG.
is inserted into the insertion groove 27, and the round shaft 2 is inserted into the insertion groove 27 as shown in the fifth figure.
5 is inserted into the insertion hole 28, the abutment surface portion 13 abuts against the vertical surface portion 7 as shown in the third figure, and the protrusions 32, 32
... enters the accommodation groove 1d, and the upper spring leg 3
The contact portions 14, as shown in the first figure, are located on both sides of the
14 is locked to the bulging parts 8, 8, and the rear surface of the bottom plate 12'' comes into contact with the front surface of the base bottom plate 1e as shown in the fifth figure.Thereafter, the end of the round shaft 25 is melted and the fifth Crush it as shown in the figure, fit it into the large diameter hole 29, and screw the connection screw 5 into each screw hole 26.Do not melt the end of the round shaft 25, but fit it into the insertion hole 28 and glue it. It may be fixed by adhesive, ultrasonic adhesive, etc. In addition, in FIG.

[How to use the examples]

Fix the chassis etc. through the screw insertion holes 17', 17' with screws (not shown) and nuts (not shown),
Connect a lead wire (not shown) to each connection screw 5,
Also, insert the printed circuit board P into the insertion port 3 from the front of the terminal block.
Insert into 1. Here, the rear end edge of the printed circuit board P is locked to the stepped portion 23 as shown in the third and fifth figures, and does not go any deeper, and the printed circuit board P
The spring legs 3, 3, . . . come into elastic contact with the circuits (not shown) printed on both sides of the circuit board P from above and below, as shown in the third figure, and sandwich the printed circuit board P therebetween.

In the above usage method, the printed circuit board P is inserted from the front, but of course, if the mounting position of the terminal block itself is changed by 180 degrees, it can be inserted from the rear, or if it is changed by 90 degrees, it can be inserted from the top or bottom.

[Effect of idea]

Although this invention is a stepped terminal block, it is possible to attach terminal fittings with spring legs protruding forward or backward from the top plate, and after installing the terminal fittings, all you have to do is close the lid and install. It can be assembled extremely easily and quickly, and since one terminal fitting can be used as is without being divided, there is no problem of increasing contact resistance and lowering voltage.

Furthermore, the mounting part 9 and the locking part 10 provided in each section of the terminal block prevent the terminal fitting from falling out vertically or causing any play, and the terminal fitting will not fall out from the left or right due to the left and right walls and will not cause any play. The locking protrusion 11 prevents it from slipping out backwards or causing play.
Moreover, a vertical surface part is formed on the upper stage terminal fitting, and an abutting surface part 13 is formed on the insulating lid, and a bulging part 8 is formed on the lower stage terminal fitting, and an abutting part 14 is formed on the insulating lid. Since the terminal fittings are formed, when the terminal fittings are attached with the lid closed, the terminal fittings will not come off forward or play, and the terminal fittings can be installed reliably.

[Effects of Examples]

If various fitting means are formed on the insulating base and the insulating lid as in the embodiment, the lid can be joined to the base without adhesive, and furthermore, if adhesive is used, the connection can be made more securely. It is.

[Brief explanation of drawings]

The figures show an embodiment of this invention. Figure 1 is a partially cutaway plan view with the middle part of the terminal block omitted and some parts removed, and Figure 2 is a plane view with the middle part of the insulating cover omitted. Figure 3 is a sectional view taken along line A-A;
The figure is an exploded sectional view of the same as the above, Figure 5 is a BB sectional view, Figure 6 is an exploded sectional view of the same as the above, Figure 7 is a front view of the insulating base, Figure 8 is a rear view of the insulating cover, and Figure 9. is a front view of the terminal block, Figure 10 is a perspective view of the terminal fitting for the upper stage,
FIG. 11 is a perspective view of the terminal fitting for the lower stage. 1... Insulating base, 1a, 1b... Step, 1c...
Compartment, 1d, 1d'...Accommodation groove, 2...Top plate, 3
... Spring leg, 4a, 4b ... Terminal fitting, 5 ... Connection screw, 6 ... Screw hole, 7 ... Vertical surface part, 8 ...
Swelling part, 9... Placing part, 10... Locking part, 11...
... Locking protrusion, 12 ... Insulating lid, 13 ... Contact surface portion, 14 ... Contact portion, 21 ... Left and right walls.

Claims (1)

[Scope of utility model registration request] Each step 1a of one insulating base 1 formed into steps,
A plurality of sections 1c, 1c... are formed in 1b, and terminal fittings 4a, 4b for upper and lower stages each have an upper surface plate 2 and a spring leg 3 in each section 1c, 1c...
In a terminal block in which a connection means such as a screw hole 6 for screwing a connection screw 5 into each top plate 2 is installed, and each spring leg 3 is made to protrude forward of the top plate 2, the upper terminal fitting 4a is A vertical surface part 7 is interposed between the top plate 2 and the spring leg 3, a bulge part 8 is provided in the middle of the spring leg 3 of the lower terminal fitting 4b, and the left and right walls 21,
In each of the upper and lower compartments 1c, 1c partitioned by 21, housing grooves 1d, 1d' which are open upwardly and forwardly are formed. A stopper 10 and a locking protrusion 11 on the rear edge of the top plate 2 are formed, and terminal fittings 4a for upper and lower stages from the front of the insulating base 1 are formed.
4b into the housing grooves 1d and 1d', place both side edges of each top plate 2 on the mounting part 9, lock the rear end edge of each top plate 2 in the locking part 11, and 2 is brought into contact with the locking part 10, and the insulating cover 12 having the insertion port 31 is attached and closed from the front of the insulating base 1, and the contact surface part 13 formed on the insulating cover 12 and the abutting part portion 14, vertical surface portion 7 and bulge portion 8, respectively.
A terminal block characterized by locking.