JPS6314367Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a terminal structure applied to a terminal portion of a fuse holder, etc.

[Background technology]

When soldering lead wires to the terminal portions, there is a drawback that positioning the lead wires is not easy, and as a result, the solder connection may not be made reliably.

[Purpose of invention]

The purpose of this invention is to provide a terminal structure that allows positioning of lead wires and secure solder connection of the lead wires.

[Disclosure of invention]

The terminal structure of this invention includes a terminal portion having a bent piece and a tongue piece cut and raised at the bent portion of the bent piece and rising up against the bent piece, and a terminal portion formed on the bent piece. It is equipped with a soldering hole into which the tip of the lead wire is inserted.

According to the configuration of this invention, the lead wire can be soldered to the bent piece while the tip of the lead wire is inserted into the soldering hole and the end surface of the insulation coating of the lead wire is in contact with the tongue piece. . Therefore, the lead wires can be positioned and the lead wires can be reliably connected by soldering. Further, since the tongue piece is cut and raised at the bent portion of the bent piece, the bent portion can be easily bent.

Embodiment A fuse holder to which an embodiment of this invention is applied will be explained based on FIGS. 1 to 9. That is, as shown in FIG. 8, this terminal structure has a bent piece 18a, and a terminal part that has a tongue piece 28a that is cut and raised by the bent part 29 of the bent piece 18a and stands up with respect to the bent piece 18a. 18 and bent piece 18
The soldering hole 30 is formed in the shape of a and into which the tip of the lead wire 25 is inserted.

The fuse holder consists of a body 1 made of insulating plastic and a cover 2 made of elastic insulating plastic.

The body 1 is formed into a rectangular box shape, and mounting pieces 3 extend from both ends to form mounting holes 4. A cover receiving step 6 is provided on the inner surface of the recess 5 of the body 1 at a depth H2 approximately equal to the thickness _H1 of the cover ₂ from the opening edge, excluding the corner portion 5a. The side surface 6a is a tapered surface that expands outward. Also, the bottom part 7 of the body 1 is the outer bottom surface 8 of the body 1.
A slit 9 is formed at both ends of the bottom part 7, and a ventilation hole 10 is passed through the corner part 5a. A protrusion 11 is provided that protrudes flush with the protrusion 11 , a mounting screw hole 12 passes through the center of the protrusion 11 , and terminal receiving steps 13 are provided on both sides of the protrusion 11 . Furthermore, Figures 3 to 5
As shown in the figure, a notch 14 for inserting a lead wire is provided at the lower center of the bottom portion 7 at the lower end of both ends of the body 1.
, the bottom wall 15 of which forms a hook-like receptacle 16 on the inside.

The pair of receiving fittings 17 are formed by bending both ears of the head of a flat T-shaped metal plate in the same direction into a U-shape, and the legs serve as terminal portions 18. Intermediate portion 19 of bracket 17
are placed on the upper surface of the bottom part 7 of the body 1, and both side parts 2
0 has an elastic part 21 whose upper end is an inward arc,
The outer surface is in elastic contact with a recess 22 formed in the cover receiving stage 6 of the body 1.

The terminal portion 18 is formed by bending the connecting portion 23 with the receiving metal fitting 17 at right angles and inserting the terminal portion 18 into the slit 9 in the body 1.
The bent portion 29 is formed as follows so that it can be bent at the edge of the slit 9 on the outer bottom surface of the bottom portion 7 that has passed through the slit 9. That is, as shown in FIG. 8, notches 24 are formed on both side edges of the terminal portion 18, and the exposed copper wire core 26 of the lead wire 25 can enter between the notches 24, and the lead wire 2
The distance R ₂ is smaller than the outer diameter R ₁ of the insulation coating 27 of No. 5.
A pair of U-shaped cut lines 28 are formed on the bent piece 18a side. Therefore, when the bent piece 18a of the terminal part 18 protruding from the outer surface of the bottom part 7 of the body 1 is pushed so as to be folded toward the center of the bottom part 7, the end of the U-shaped cutting strip 28 comes into contact with the edge of the slit 9. The line connecting 28b to each other becomes the bending line that is most likely to be bent, and the bending will always occur at this position. By this bending, the tongue piece 28a separates from the U-shaped cut muscle 28, and the tongue piece 28a stands up with respect to the bent piece 18a.

The bent piece 18a forms a soldering hole 30 for the lead wire 25 at the center in the width direction near the tip, and the tip is bent in the opposite direction to the bending direction of the bent part 29 to form a hook piece 31. , and this hooking piece 31
is formed on the protrusion 11 of the body 1.
It is locked at 3.

The lead wire 25 is inserted through the notch 14 of the body 1, and the core wire 26 passes between the tongue pieces 28a, but the end surface 27a of the insulation coating 27 is inserted between the tongue pieces 28a due to the dimension relationship.
The tip of the core wire 26 is inserted into the soldering hole 30. In this state, soldering hole 3
0 to the tongue piece 28a, the core wire 26 is connected to the terminal portion 1.
It is soldered to the bent piece 18a of No.8.

The cover 2 is inserted into the opening of the recess 5 of the body 1 and supported by the cover receiving stage 6, and the upper surface of the cover 2 is sunk inward from the opening surface of the recess 5. ) is formed into a reverse taper, and forms a gap 34 between this side surface 32 and the opening edge of the recess 5 into which the driver 33 is inserted. A pair of fuse supports 35 are provided on the back side of the cover 2.
protrudes and holds the glass tube portion 37 of the fuse 36. The holding force of this fuse 36 is stronger than the holding force due to the clamping of both side parts 20 of the receiving fitting 17. Furthermore, protrusions 39 are provided at both ends of the terminal portion 38 of the fuse 36 with a gap therebetween to cover the end surface of the terminal portion 38. When the cover 2 is pushed into the opening of the recess 5, the terminal portion 38 of the fuse 36 is sandwiched between the both sides 20 of the receiving bracket 17, and at the same time, the cover 2 is supported by the cover receiving stage 6 and becomes in a closed state. . In this state, the cover 2 is attached and the fuse 36 is electrically connected.

FIG. 9 shows a state in which the body 1 of the fuse holder is attached to the fixture main body 40 of a multi-light lighting fixture,
It can be mounted by passing a screw or the like into the mounting hole 4 or the screw hole 12. At this time, the ventilation hole 10 is formed in the bottom part 7, the corner part 5a and a part of the corresponding gap 34 (corresponding position of the ventilation hole 10) are opened in the upper part, and the lower part has a notch 14, so the instrument Due to air convection generated from a heat source such as the ballast 41 within the main body 40, air flows through the notch 14, the vent 10, the corner portion 5a, and a portion of the gap 34. In the figure, 42 is a shade and 43 is a lamp.

On the other hand, when replacing the fuse 36, insert the driver 33 into the gap 34 as shown in FIG.
The cover 2 is removed by lifting the fuse 36 against the holding force and separating it from the bracket 17. At this time, since the tip of the driver 33 hits the outer surface of the protrusion 39, the terminal portion 38 of the fuse 36 is not damaged by the driver 33. Since the fuse 36 is attached to the cover 2, when replacing the fuse 36, the fuse 36 is further removed from the fuse support 35.

According to this embodiment, with the tip of the lead wire 25 inserted into the soldering hole 30 and the end surface 27a of the insulation coating 27 of the lead wire 25 in contact with the tongue piece 28a, the lead wire 25 is bent into the bent piece 18a. Can be soldered. Therefore, the lead wire 25 can be positioned and the lead wire 25 can be reliably connected by soldering. Also, a tongue piece 28a is attached to the bent part 29 of the bent piece 18a.
Since the bending portion 29 is cut and raised, the bending portion 29 can be easily bent.

Further, in this embodiment, the tip of the bent piece 18a can be easily hooked onto the terminal receiving stage 13, and the tension can be securely prevented by the lead wire 25 when the lead wire 25 is connected to the bent piece 18a. Bracket 1
It will be fixed at 7. Moreover, since it is bent at the outer edge of the slit 9, its fixation to the body 1 is ensured, and since the notch 24 and tongue piece 28a are formed on both side edges of the corresponding position, the tip of the bent piece 18a can be pressed and bent. It can be bent by hand. Also, the tongue piece 28a
By locking the end portion 27a of the insulating coating 27 of the lead wire 25, the insulation of the body 1 is ensured, so that the body 1 can be made more compact. Also, during soldering, even if solder gets on the bent piece 18a, since the bent part 29 is narrowed by the notch 24 and the tongue piece 28a, the solder will not flow into the receiving metal fitting 17 side, and the fuse 36 will be closed. Never soldered.

Furthermore, a pair of tongue pieces 28a are provided, and the distance R ₂ between them is made larger than the core wire 26 of the lead wire 25 and smaller than the outer diameter R ₁ of the insulation coating 27.
In addition, the tip of the core wire 26 is inserted into the soldering hole 30 and soldered from the soldering hole 30 to the tongue piece 28a, and the solder between the tongue pieces 28a is By soldering the core wire 26 to the soldering hole 30, the strength of the lead wire 25 in the longitudinal direction can be improved, and the strength of the lead wire 25 in the pulling direction can be improved.

[Effect of idea]

According to the terminal structure of this invention, the lead wire can be soldered to the bent piece while the tip of the lead wire is inserted into the soldering hole and the end surface of the insulation coating of the lead wire is in contact with the tongue piece. can. Therefore, the lead wires can be positioned and the lead wires can be reliably connected by soldering. Furthermore, since the tongue piece is cut and raised at the bent portion of the bent piece, there is an effect that the bent portion can be easily bent.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a fuse holder to which an embodiment of this invention is applied, Fig. 2 is a front view thereof, Fig. 3 is a right side view, Fig. 4 is a bottom view, and Fig. 5 is a sectional view.
Figure 6 is a sectional view of the state in which the cover is removed, Figure 7
The figure is an exploded perspective view, Figure 8 is a perspective view of the terminal section, and Figure 9 is a perspective view of the terminal section.
The figure is a sectional view of a lighting fixture with a fuse holder. 18...Terminal part, 18a...Bend piece, 25...
Lead wire, 28a... tongue piece, 29... bending part, 3
0...Soldering hole.

Claims (1)

[Claims for Utility Model Registration] (1) A terminal portion having a bent piece and a tongue piece that is cut and raised at the bent portion of the bent piece and stands up against the bent piece, and the bent piece. A terminal structure including a soldering hole formed in the hole and into which the tip of the lead wire is inserted. (2) The terminal structure according to claim (1), wherein a pair of the tongue pieces are formed, and the mutual interval between the tongue pieces is larger than the outer diameter of the core wire of the lead wire and smaller than the outer diameter of the insulation coating.