JPS59205171A - Pressure connecting method of covered wire and its terminal - 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] The invention is to provide a coated electric wire with a core wire length of 11T.
(h) Press-fitting a wire into a thin slit, and when a broken magnetic wire is pressed into the slit, the wire is broken at the edge of the slit to establish continuity between the core wire and the press-welded piece. This is related to the terminal.

Conventionally, as a pressure welding terminal using this type of pressure welding method, the first
What is shown in Figures 3 to 3 is referred to. Fig. 1 shows a notched type, in which two tongue-shaped pressure welding pieces 1, 1 are bent in parallel with an appropriate interval and slits 2, 2 are formed in the center of the pressure welding pieces 1, 1 from the tip to the middle. is the provision.

The slits 2, 2 are slightly thinner than the core wire W of the electric wire W to be connected, and when the covering hole NW is press-fitted, the covered portion C is broken at the edge of the slit, and the core wire W
is placed in slit 2 to obtain continuity. The one shown in FIG. 2 is box-shaped, and has a rectangular pressure contact part 4 with an open upper LIii.
A slit 6.6 is entirely provided in the opposing pressure contact pieces 5, 5 of the pressure contact portion 4 so as to divide the pressure contact pieces 5, 5 from the upper end of the center portion.

This slit 6.6 has an IM that is slightly thinner than the core wire W of the covered wire W, as described above.

The one shown in FIG. 3 is of a cylindrical type, and has slits 8, 8 facing each other from the upper end to the middle part, forming a pressure contact piece 9.9. Incidentally, the press-fit ends of the covered electric wires of any of the above-mentioned sulins 2 and 6.8 are provided with an inclined portion 2a to facilitate press-fitting of the covering cover W.

6a and 8a are i & kicked. However, in the above-mentioned pressure contact terminal, the covered wire is simply press-fitted into the slit, and since the press-fitted end of the slit is open,
Poor welding occurs due to missing wires or movement of the wire being wired, and furthermore, poor welding is likely to occur due to part of the core wire escaping during press-fitting, especially in the case of stranded wires, as shown in Figure 4.
There was a drawback that the two core wires were separated and the contact pressure between the core wires was insufficient. Furthermore, when press-fitting the covered wire, the slit widens, resulting in poor press-fitting.

In addition, in order to prevent the covering Kaisho W from coming off, the fifth
Unfortunately, the measures shown in Figure 8 were taken. That is, in FIG. 5, two 9111 elastic pieces 10.10 are separately provided in the vicinity of the pressure contact portion 11, and the tips of the elastic pieces 10.10 are bent inward and obliquely. The tip of the elastic piece IC) prevents the covered wire W, which is inserted with the elastic pieces IC) spread apart, from being pulled out. Figure 6 shows the elastic piece 10°10 shown in Figure 5.
Elastic piece 12.1 with a beveled tip that functions in the same way as 12.1
2 is provided protrudingly to prevent the covered wire W from being pulled out. FIG. 7 shows a presser piece i5. which is plastically deformed in the vicinity of the pressure contact piece 14.
ls is separately provided to press down the covered wire W and prevent it from being pulled out from the pressure contact piece 14. In FIG. 8, the presser lid 17 is locked to the terminal retaining portion 19 while pressing down the covered wire W to prevent the covered wire W from being pulled out. On the other hand, as a means to prevent the slit from widening 9, as shown in FIG.
This was regulated by Uging 20 in order to eliminate pressure welding defects.

However, the means for preventing the insulated wire from being pulled out as shown in Figs. 5 to 8 have a complicated structure and are expensive, and all of them require holding the core wire separately by pressing down on the exposed part. There is little certainty of disaster. In addition, as shown in Fig. 9, in order to control the spreading force applied to the pressure welding piece, part of the force is
・Creating a structure that puts the burden on the Ujing requires great skill in the production of the Ujing. On the other hand, if the burden of one kilobyte of the force of the welding was eliminated, it would be unnecessary to use a high-grade material for the pressure welding piece, and the strength calculation would require careful consideration, leading to an increase in cost.

The present invention provides a pressure welding method for insulated wires that maintains stable contact against external forces such as vibrations and shocks, prevents the insulated wires from being pulled out, and that can be done at low cost without using high-grade materials. All terminals will be provided.

Therefore, in order to achieve the above object, the method for pressure welding a covered electric wire according to the first aspect of the present invention is to place two pressure welding pieces having a slit slightly thinner than the core wire of the electric wire to be connected so that the slits are close to each other. By press-fitting the core wire into the slit and intersecting the slit, the core wire is held at the slits.

Furthermore, in the pressure contact terminal according to the second invention, slits slightly narrower than the core lume of the covered electric wire are provided diagonally in opposite directions.
Two press-contact pieces are provided close to each other so that the slits overlap, and the press-contact pieces are provided so as to be bendable so that the slits intersect with each other.

Examples of the present invention will be described in detail below. FIG. 10 is a perspective view of the pressure contact terminal. This pressure contact terminal 3
0 consists of a connecting part 31 and a pressure contact part 32. Connection part 31
has elastic clamping pieces 33,33 for clamping other male connectors, and the elastic clamping pieces 3'3, 33 stand up from the bottom plate 34. Furthermore, the clamping pieces 33, 33 may be separate parts without being integrated with the bottom plate 34, and the connecting portion is made into a male terminal that can be connected to other female terminals instead of using the clamping pieces 33 and 33. You can also do that.

The pressure contact part 32 has two U-shaped pressure contact bodies 35 and 36,
The pressure contact body 35.36 presses the bent pieces at both ends into the pressure contact pieces 3.5a, 35.
．． b, 36a, 36b, j running parts 35c, 36c
is formed integrally with the Pressure contact pieces 35a, 35b, 36a,
36b is provided with slits 37 and 38 from the upper center end.

The slits 37 and 38 are made to have a slightly narrower width than the core wires of the eight electrodes to be welded, and are provided diagonally in opposite directions to such an extent that the slits 37 and 38 overlap, as shown in Figure 11. The pressure contact pieces 35a, 36a135I) and 361] are provided adjacent to each other. Furthermore, the pressure contact piece 35
a, 35b, 36a, 36b move and sulin) 37.
The press members 35 and 36 are attached to the base 3 so that the parts 38 can cross each other.
It will be erected on the north side of the bend at 5C and 36C. Pressure welding piece 3
5a.

A pressing member 39 is provided protruding from the outside of 36b (11ii), and when the press-contact members 35 and 36 are bent, the press-contact piece 36a.

351) ', 17 is brought into contact with the slits 37 and 38 to prevent the slits 37 and 38 from widening due to the electrical wires pressed into the slits 37 and 38.

Therefore, f4. As shown in FIG.
Press fit into the slits 37 and 38 provided in 5a and 36b. The covering portion C of the covered wire W is broken at the edge of the slit 37.38, and the core fJIw is press-fitted into the slit 37.38 while being deformed. Core iw is both slits 37.38
When it is press-fitted to the middle part of 37 and 38, the overlapped part of 37 and 38 moves on its own and cannot be press-fitted any further. Next, as shown in the 12th row, the pressure contact body 35
．． 36 is folded to intersect the slits 37 and 38, and the core %'W is held in a diamond-shaped space 40 formed by the slits 37 and 38. At this time, the pressure contact piece 36a abuts against the holding member 39, and the pressure contact piece 35a abuts against the inside of the base 36C, so that the energized wire W is held in place)37. ．． This prevents the spread of 37.38 when press-fitted into 38. The core wires W held at 37.38 are gathered at 17Q, and the position at which they are held is determined and becomes immovable. However, the above explanation is for one pressure contact piece 35a, 36.
Although the movement is about a, the other pressure contact piece 35 b ,
The same can be said for 36b.

Figures 13 to 17 show an embodiment of the IP stage, which was discussed in order to eliminate the elasticity of the pressure-welding body and the restoration of the lf-shaped piece due to the outer cuff ζ after pressure-welding Enoki Kamemori to the L contact terminal. show. Therefore, the figure only shows the pressure contact part of the pressure contact terminal.
The four-line hook configuration is the same as the pressure contact portion 32 of the pressure contact terminal 30 shown in FIG.

FIG. 13 shows the base portions 42c of the press-contact bodies 42, 43.

43c A bent oJ' tie wire holder 44.
45 is provided, and as shown in FIG. 14, wire pressers 44 and 45 are bent by the pressing force of the wire pushing jig 46 to press the electrically-conducted wire W from above the covering portion C. Therefore, the wire presser 44, 45 does not deform and press the wire W to be wired to be formed by resisting deformation between the pressure contact pieces 42a, 43a and the pressure contact pieces 42b, 43b, and the pressure contact pieces do not restore their original state. Figure 15 shows the pressure welding piece 48.
A locking pawl 49 is provided at a to prevent the pressing pieces 48a and 50a from returning to the original position by locking the locking pawl 49 to the pressing piece 50a that contacts v4. Note that the pressure contact piece 50b is also provided with a locking claw similar to the locking claw 49. 16th
The problem is that the press-fitting pieces 52a are bent when the press-fitting bodies 51 and 52 are bent.
A locking claw 52d protruding from the contacting piece 51a is engaged with the pressing member 53 that is in contact with the pressing member 53 to prevent the pressure contacting piece 52a from returning. Note that a lock claw similar to the lock claw 52d is also provided on the pressure contact piece 51b in a protruding manner.

In FIG. 17, the pressure welding part is housed in the housing 54, and the upper parts of the pressure welding pieces 55a and 56a are pressed with the press lid 57.
5a and 56a are prevented from returning.

In the above embodiment, one pressure contact part was provided on the IF contact terminal, but two pressure contact parts may be provided as shown in FIG. 18, or more pressure contact parts may be connected in series. Furthermore, a plurality of press-contact parts can be provided in parallel.

In addition, in the above embodiment, the slits provided in the pressure contact pieces were provided diagonally from the upper ends of the pressure contact pieces, but as shown in No. You can do it like this.

When press-welding the pressure-welding terminal in the above embodiment, it is possible to improve work efficiency by using a pressure-welding jig 60 as shown in FIG. 20. Press-fitting is possible, but press-fitting parts 601) for pressing the press-fitting bodies 61 and 62 inward are provided on both sides 1ii1 of the press-fitting part 60a, which holds and press-fits the covered wire W, like the press-fitting part-El-60. It is preferable to use one with a figure-eight cross section. In this case, the inner surface 60c of the holding portion 60b is a body surface that becomes narrower from the opening toward the back.

As is clear from the second theory, I'I', 1, according to the pressure welding method of the present invention, the intersecting slits create a holding space for the core wire without openings and the core wire is held.
The core often comes out of the press inlet of the slit, and the core wire does not come loose and the covered wire is held securely.
The physical connection is ensured. This is particularly effective when using twisted wires.

- Also, according to this terminal, the structure is simplified without the need to provide a holding part for the $ storage wire, and the pressure welding 1/L work can be done easily.
j is made easier. In addition, the two lE long pieces can increase the side waves of the terminal and reduce the board thickness, and +'E
4i111! It can be manufactured in one piece at a low cost without using expensive materials. Furthermore, since the contact area with the core wire increases, the connection can be seen reliably. 1, Sha811j [The force of press-fitting the 4 wires into the slit acts in the direction of closing the press-fitting piece, so the slit is closed",! f! The force to make the K sound is reduced and the slit is no longer wide.

Further, by combining the pressure contact terminal according to the present invention with a lid for covering the pressure contact terminal or a pressure contact jig, a more stable material can be obtained.

[Brief explanation of the drawing]

Figures 1 to 3 show conventional pressure contact terminals. Figure 1 is a perspective view of a notch type, Figure 2 is a perspective view of a box type, and Figure 3 (r!, cylindrical type). FIG. 4 is a front view showing a state in which the core wires are separated. FIGS. ) FIG. 6 is a perspective view of an arrowhead-shaped structure, FIG. 7 is a perspective view of a plastically deformable presser piece, and FIG. 8 is a perspective view of a presser cover. Fig. 10 is a front view showing a means for preventing the slit from widening 9. Figs. The figure is a front view of the same, and FIG. 12 is a front view of the state in which the slits are crossed and pressed. FIGS. 13 to 17 show means for preventing the return of the pressure contact piece of the pressure contact terminal according to the present invention. , Fig. 13 is a perspective view of the wire holding member, Fig. 14 is a cross-sectional view of its operation, 1g, 15 is a perspective view of the locking claw, and Figs. 16i and j are perspective views of the locking claw with the holding member. 17 += is a cross-sectional view of the presser cover; FIG. 18 is a perspective view of a pressure contact terminal in which two pressure contact parts are connected; FIG. 19 is a front view of the pressure contact terminal showing another example of the shape of the slit; Fig. 20 is a front view showing a state in which the +Y electric wire is to be pressure-welded. 35a, 35b, 36a, 36b, 42a. 42b, 43a, 43b, 48a, 50a. 50 b, , 51 a, 5 l b , 52
a, '55 a. 56a, 58a, 59a... pressure contact piece, 37.38
...Slit, W...covered electric wire, W-...coated part. Agent Ken Aihara Figure 1 Figure 3 Figure 5 Figure 4 Figure 6 Figure 7 Figure 5 Figure 1 o Figure 38 37 Figure 8 Figure 9 Figure 11 Figure 12 Figure 14 Figure 6 Figure 13 Figure 15 Figure 16 Figure 18 Figure 19 Figure 17 Figure 57 55a 56a 4 Figure 20

Claims (1)

[Scope of Claims] (2) Two press-welding pieces having a slit slightly wider than the core wire of the broken electric wire are brought close to each other so that the slits form a wheel, and are press-fitted into the slit of the core binding metal. A pressure welding method for a covered electric wire in which the entire core wire is held under pressure at the crossing portion by intersecting slits. 2. Temporary 4> Two pressure-welding pieces with slits slightly thinner than the core wire of small-pure wire are provided diagonally in opposite directions to each other, and the pressure-welding pieces are provided close to each other so that the slits have a force (force). A pressure contact terminal that is movable so that it can be moved.