JPH0720846Y2 - Wire pressure welding connector and contact - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a pressure welding technique for a wire pressure welding connector, and in particular,
The present invention relates to a technology for collectively press-connecting two or more types of discrete-type electric wires having different wire diameters.

[Prior Art] As a prior art, as shown in Japanese Utility Model Laid-Open No. 1-62661, a cover, which is a separate component, slides vertically from a housing containing a pressure contact, and a cover contact arrangement is provided. There is a method in which the electric wire is compressed by positioning with a pore having a diameter larger than that of the electric wire arranged corresponding to, and sliding the cover.

In addition, two contact portions are formed on the contact. However, since these pressure contact portions are aligned, it is impossible to connect different electric wires.

For example, in the home bus system (HBS), the conductor diameter is φ
It is common to use three types of wire: 0.4, φ0.5, and φ0.65. Of these, the main line of the home bus system is φ0.65
, 0.4 is often used for telephones on branch lines. In that case, one connector may press several kinds of electric wires. However, in the case of a small diameter, there is a problem that sufficient contact pressure cannot be obtained, and in the case of a large diameter, the pressure contact force becomes too large for pressure contact, or the contact pressure contact part opens. there were.

In addition, it is not preferable in terms of management to prepare a dedicated connector for each, because the number of products will increase due to the similar structure.

[Problems to be Solved by the Invention] As described above, the conventional discrete type wire pressure welding connector has the following drawbacks.

(1). Since the housing is made up of two parts, the cost is high, and the cover is small, so it may be lost before the wire is pressure-welded.

(2). Since the wire is not temporarily fixed, the wire once inserted cannot be fixed. That is, if the cover is slid by the external force when the wires are inserted all at once after being inserted and the cover is slid in a state of returning from the wire stopper position, incomplete pressure contact or non-pressure contact is caused.

(3). Since there is only one press-contact slit width, it is not possible to handle multiple types of wires. Therefore, the problem of the present invention is simple by pressing the same wire diameter of discrete type or two different wire diameters at the same time. Another object of the present invention is to provide a wire pressure welding connector capable of obtaining a reliable serial connection.

[Means for Solving the Problems] According to the present invention, in a connector in which a plurality of pressure contact contacts are built in an insulator, the insulator has a base portion for fixing the contacts upright, and a thin string-like shape on the base portion. The base portion and the cover portion have a hole for inserting an electric wire at a position facing the pressure contact position of the pressure contact, and the base at a position facing the hole of the insulator. The portion is provided with a mortar-shaped through hole that is wider than the electric wire insertion direction, and the electric wire is inserted into the hole and the cover is slid to obtain a connection with the electric wire. The electric wire pressure welding connector is obtained.

Further, according to the present invention, in the pressure contact included in the electric wire pressure contact connector, one end has a contact portion and the other end has at least two pressure contact portions, and one pressure contact portion is connected to another pressure contact portion. A pressure contact is obtained, which is characterized in that it is bent in a crank shape so as to be located away from the contact portion.

[Embodiment] FIGS. 1 and 2 show a contact according to an embodiment of the present invention. In this connector, a plurality of press-contacts 1 are built in an insulator 2 in a state where they are arranged perpendicularly to the paper surface. The insulator 2 is composed of a base portion 10 for fixing the contact 1 in an upright position, and a cover portion 20 connected to the base portion 10 by a thin string-shaped hinge portion 14. The base portion 10 and the cover portion 20 have an electric wire insertion hole 21 at a position facing the pressure contact position of the pressure contact 1. A wire is inserted into the wire insertion hole 21 and the cover 20 is slid to obtain a connection with the wire. A mortar-shaped through hole 11 is formed in the base portion 10 of the insulator 2 at a position opposite to the electric wire insertion hole 21 and is wider than the electric wire insertion direction.

The base portion 10 of the insulator 2 has 8 cores, and the cover portion
20 has two four cores, which are independent from each other and are integrally connected by four hinge portions 14.

FIG. 3 shows the above-mentioned connector connected to an electric wire.
In FIG. 3, the wire insertion hole 21 of the cover portion 20, the contact pressure contact V groove 31, and the mortar-shaped through hole 11 of the base portion 10 are at fixed positions, and the wire 40 is inserted. 4 covers 20
Since there are two cores in one block, the insertion work is sequentially performed for the four cores of the electric wire 40. Inserted wire
Since the coating of 40 is a material such as vinyl chloride or polyethylene, it stops in a state of being lightly pressed into the mortar-shaped hole 11.

FIG. 4 shows a cross-sectional view of the state where the press contact is completed. After inserting the electric wires 40 for four cores in FIG. 4, after confirming that the electric wires 40 are surely inserted through the through holes 11, press the cover portion 20 in the connector fitting direction. Press surface 22. At this time, the guide protrusion 23 of the cover 20 is guided and slides in the guide groove 12 of the base 10. The electric wire 40 is pressed against the U slit 32 of the pressure contact 1 by the electric wire pressing groove 24 and the electric wire insertion hole 21 of the cover portion 20 provided near the contact pressure contact portion,
It is possible to obtain conduction with the conductor.

Finally, the locking projections 26 of the cover 20 can be seen through the check grooves 25 on both sides of the cover 20. According to this
It can be visually confirmed that the crimping is completely performed. Next, form the electric wire 40 and push it into the groove 27,
Do not apply direct stress to the pressure contact part.

FIG. 5 shows the shape of the insulator. As shown in this figure
The base portion 10 and the cover portion 20 are molded with the hinge portions 14 connected to each other, and after incorporating the contacts 1, the cover portion is formed.
20 is turned 180 degrees and the guide grooves 12 provided on both sides are engaged with the guide protrusions 23 to obtain the state shown in FIG.

The shape of the contact is shown in FIG. The contact has a contact portion 33 at one end to be fitted with a mating pin header (not shown), a first pressure contact portion 34 on the extension of the contact portion, and a second pressure contact portion 35 on the extension of the contact portion. . Each U slit
32a and 32b have different width dimensions in the figure, but slits having the same slit width may be arranged. The contact 1 is bent in a crank shape so that the pressure contact portion 34 is located away from the other pressure contact portions 35 and the contact portions 33.

The reference surface 36 of the first pressure contact portion 34 is in contact with the reference surface 14 of the base portion, and the reference surface 37 of the second pressure contact portion 35 is in contact with the reference surface 15 and has a straight portion for receiving the force at the time of pressure contact. Reference numeral 38 is a portion that is planted and fixed to the press-fitting portion 16 of the base portion 10.

[Effects of the Invention] As described above, the cover part and the base part of the insulator are integrated, the cost is low and the cover part is not lost, and the temporary fixing structure is adopted for the mortar-shaped taper part of the base part during press contact. Since it is possible to prevent the electric wire from coming off, it is possible to provide a simple and reliable electric wire connecting connector.

Further, the contacts having two U-slits enable serial connection, and electric wires having different wire diameters can be easily connected with an appropriate contact pressure.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an assembled state of a connector according to an embodiment of the present invention. FIG. 2 shows a state during assembly of the connector, (a) is a front sectional view, (b) is a plan sectional view,
(C) is a side sectional view. FIG. 3 is a front sectional view of the electric wire connecting step of the connector. FIG. 4 shows a state where the electric wire connection of the connector is completed, (a) is a front sectional view,
(B) is a 2A-2A sectional view. FIG. 5 shows an insulator of the same connector, (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, and (e) is a right side view. FIG. 6 shows contacts of the connector,
(A) is a front view, (b) is a plan view, (c) is a right side view (d) is a development view. 1 ... Contact, 2 ... Insulator, 10 ... Base part, 11 ... Mortar-shaped through hole, 14 ... Hinge part, 20 ...
Cover part, 21 ... Wire insertion hole, 22 ... Pressing surface, 23 ... Guide protrusion, 24 ... Wire pressing groove, 25 ... Confirmation groove, 26 ... Locking protrusion, 27 ... Groove part, 31 ...... Contact pressure welding V groove, 32a,
32b …… U slit, 33 …… contact part, 34 …… first press contact part, 35 …… second press contact part, 36,37 …… reference plane, 38 …… press fit part, 40 …… electric wire.

Claims (3)

[Scope of utility model registration request] 1. A connector having a plurality of pressure contact contacts built into an insulator, wherein the insulator comprises a base portion for fixing the contacts upright, and a cover portion connected to the base portion by a thin hinge. The base portion and the cover portion have a hole for inserting an electric wire at a position facing the pressure contact position of the pressure contact, and the base portion at a position facing the hole of the insulator has a wider opening in the wire insertion direction. A connector for crimping an electric wire, characterized in that a mortar-shaped through hole is provided, and an electric wire is inserted into the hole and the cover is slid to obtain a connection with the electric wire. 2. The pressure contact included in the electric wire pressure contact connector according to claim 1, wherein one end has a contact portion, the other end has at least two pressure contact portions, and one pressure contact portion is the other. A pressure contact, characterized in that it is bent in a crank shape so as to be positioned away from the pressure contact portion and the contact portion. 3. The pressure contact according to claim 2, wherein the two pressure contact portions have different slit widths, and different types of electric wires can be pressure contacted with each other.