JPS6217971A - Connection of wire and connection element and assembly of compression bonded type connection element used therefor - 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] [Industrial Application Field] The present invention relates to a method of connecting crimp connectors corresponding to a plurality of covered electric wires, and a crimp type connector assembly used in the method. In other words, in order to assemble electrical elements such as small connectors, for example, an assembly of crimp-type connectors is inserted collectively into a housing, and a covered wire is electrically and physically connected to the assembly. Regarding the wiring method for

[Conventional technology]

A crimp connector that makes an electrical connection by stripping off the sheathing at the end of a covered wire and crimping it with the exposed core wire, and physically holding the wire and connector by crimping it with the sheathing,
Because it has many advantages over other types of connectors, it is often used to connect electrical wires to electrical elements and devices such as connectors and printed circuit boards. Figure 6 shows a typical example of a crimp terminal for a beam septacle connector.
1 is manufactured continuously from a sheet metal material by press working while being held in a carrier, and includes a crimping barrel 62 for crimping the core wire of the electric wire to make a crimped connection, and a connector 61 for crimping the covering of the electric wire to connect it to the electric wire. It consists of an insulation barrel 63 for holding, a contact part 64 for contacting another connector, that is, a pin (not shown), and a lance 65 for fixing to the cavity of the insulator housing. ing.

Similar to the insulation displacement type connector, which is advantageous for collectively connecting a large number of connectors and a corresponding number of covered wires, such a crimp connector can be used to connect a large number of crimp connectors and a corresponding number of covered wires. The wiring harness and connector assembly is manufactured by a process in which a large number of corresponding covered wires are collectively crimped and then inserted into the cavity of the connector housing (collective crimping and insertion process). For example, the automation for
No. 1, No. 59-7286, No. 59-13399, No. 59-23680, etc.

[The ode that the invention attempts to solve]

In the group batch crimping and insertion process described above, after crimping the same number of crimp connectors as the number of connector pins and a plurality of corresponding covered wires at once, the crimp flakes/l'
Insert these connectors, both of which are already crimped, into the cavity of the connector housing.
That is, the assembly is completed by inserting them all at once into the storage section.

Therefore, in order to carry out the crimping process at the same time, it is preferable that the interval between the juxtaposed crimping connectors, that is, the pinion, be the same as the pitch of the cavity, ie, the housing part, of the insulator housing into which they are to be inserted. Furthermore, in order to prevent wastage of sheet metal material due to after-cutting when manufacturing the connectors, it is preferable that the interval between the connectors held on the carrier, that is, the pitch, be as small as possible. Under these conditions, 2.
With the recent trend of miniaturization of connectors such as 5mm pitch, Amm pitch or smaller pitch connectors, traditional crimp connectors used in bulk crimp-insertion processes hold the wires by an insulation barrel. I came across a problem that I had been working on. That is, as shown in the developed view of FIG. 7, the width of the sheet metal material required to form the insulation barrel 63 (with respect to the longitudinal direction of the carrier) is the width of the material required to form the crimp barrel 62. The minimum possible pitch of the connector while held in the carrier depends on the material width of the insulation barrel or the material width for forming the contact. If the material width required to form the contact portion 64 is smaller than the material width of the insulation barrel 66, as in the case of the connector shown in FIG. 6 or 7, for example, the pitch of the connector 61 held on the carrier cannot be made smaller than the material width of the insulation barrel 66. Therefore, if the pitch of the connectors cannot be made the same as the pitch of the connectors due to the large material width of the insulation barrel, in order to carry out the batch crimp-insertion process, conventionally the connectors are punched out. The pitch of the connector must be an integral multiple of the pitch of the connector, resulting in an unavoidable waste of material. Furthermore, the same problem occurs not only in the case of connectors, but also in cases where the posts are of the crimp type and are press-fitted or soldered into through-holes provided in large numbers at narrow pitches on the printed circuit board.

It is an object of the present invention to provide a method for manufacturing an assembly of an electrical element such as a reconnector or a printed circuit board and a coated wire by batch crimping and insertion processing, so that connectors juxtaposed can be connected to each other regardless of the material width of the insulation barrel. We have provided a new crimp-type connector assembly that can determine the pitch of the electrical elements, and we have developed a new crimp-type connector assembly that uses crimp-type connector assemblies that are juxtaposed and fixed at the same pitch as the pitch of the electrical elements into which the connectors are inserted. It is an object of the present invention to provide a novel wiring connection method for obtaining an assembly of an electric element and a covered electric wire by insertion processing.

[Means for solving problems]

In the present invention, the plastic block provided adjacent to the crimp barrel of the crimp-type connector eliminates the insulation barrel that is essential for conventional crimp connectors.
A plurality of juxtaposed crimp-type connectors are integrally molded at a desired pitch, and then the sheath of the insulated wire connected to the crimp barrel and the plastic block are thermally fused by ultrasonic processing. There is a main gist.

The present invention is provided with a wire holding block in which the support portions of the two connectors are integrally molded in order to fix a plurality of connectors having crimping barrels for crimping the core wire of a covered electric wire side by side at a predetermined interval. In the connector assembly, after the core wires of a plurality of covered electric wires are crimped to the crimping barrel, a recessed portion for heat-sealing the electric wire holding block and the insulation coating of the covered electric wire by ultrasonic waves is attached to the electric wire. The method of the present invention is characterized by a crimp-type connector assembly provided in a holding block, and the method of the present invention fixes a plurality of connectors having crimp barrels for crimping with the core wire of the M electric wire side by side at a predetermined interval. Therefore, a connector assembly including a wire holding block integrally molded with a support portion of the connector is prepared, and a plurality of the core wires corresponding to the plurality of crimp barrels are aligned,
It is characterized in that the electric wire holding block and the covering of the covered electric wire are crimped together and heat-sealed by ultrasonic waves.

〔Example〕

The following is a first example of applying the present invention to a connector.
This will be explained with reference to FIGS. 3 to 3. Figure 1 shows part 1 of the present invention.
This is a perspective view of a crimp-type connector assembly 10 according to an embodiment, which is composed of a metal part and a plastic part. The crimp-type connector 11, which is a metal part, has a contact portion 12, a crimp barrel 16,
Support part 15 connecting carrier 14 and crimp barrel 16
The carrier 14 is continuously held by the carrier 14 and is continuously formed by pressing a sheet metal material.

The spacing between the connectors 11 is made equal to the pitch of the manufactured connector. These crimp type connectors 11 connected to the carrier 14 are plated in a predetermined manner and are once wound onto a reel. These continuous connectors 11 wound on a reel are unwound from the reel, and after the carrier is flattened by a straightening device, a predetermined number of connectors are fed into a molding die of an injection molding machine. Therefore, the plastic part formed integrally with the support part 15 of the connector 11, that is, the wire holding block 16, is injection molded from a plastic material. The wire holding block 16, which integrally forms the crimp type connector assembly 10 by fixing a predetermined number of crimp type connectors 11, is provided adjacent to the crimp barrel 16 and stores the covered electric wire. Recesses 17 suitable for this purpose are formed at intervals matching the pitch of the connectors. In the embodiment shown in FIG. 1, the depth and width of the recess 17 are preferably approximately equal to the outer diameter of the coating, but the recess 17 will be described further below. The support part 15 is bent and stepped between the crimp barrel 16 and the holding block 16 so that the bottom of the recess 17 and the bottom of the crimp barrel 16 can conveniently receive the coating and the core wire, respectively. (Figure 2).

18 indicates a pilot hole provided in the carrier 14;
The crimp type connector 11 is attached to the carrier 14 by a support 15
The nosuke has a structure that allows it to be easily broken at the root. The number of crimp-type connectors 11 included in the connector assembly 10 can be equal to the number of poles of the target connector, but
The wire holding block 16 may be provided with a notch (not shown), for example parallel to the recess 17, from which it can be broken and divided into smaller assemblies.

Next, a method of manufacturing an assembly of six coated wires and a six-pole connector using the above-mentioned connector assembly 10 under a collective crimp-insertion process will be described below. Therefore, the connector assembly 10 shown in FIG. shall be inserted and assembled into a single cavity. FIG. 2 shows the assembled state of the crimp-type connector assembly 10 in which the electric wire 21 is crimped to the insulator housing 20 shown in cross-section.

Referring to FIGS. 1 and 2, a method for assembling electric wires and connectors will be described. The connector assembly 10 shown in FIG.
is conveyed to the crimping station of a device consisting of a carrier 14, for example in a device such as that disclosed in the above-mentioned Japanese Patent Application No. 59-7286 and the drawings. Six corresponding covered wires 21 are aligned with the connector assembly 10 arranged in the crimping processing station of the apparatus, and the core wire 22 at the tip of the covered wire 21 is connected to the crimp barrel 16 of the crimp type connector 11. The insulation coating within and adjacent to the core wire 22 is placed in a recess 17 provided in the wire holding block 16. Next, the crimping barrel 13 is crimped to the core wire 22 by a known crimping process using a crimper and an anvil. Next, the housing 2 of the connector shown in cross section in FIG.
After aligning the six cavities 26 of o, that is, the connector housing portions with the corresponding connectors 11, the electric wires '21
Connector assembly 1o, which is crimped and connected to housing 2
0 into the cavity 26.

The combined state of both is shown in FIG. 2, and as can be understood from the figure, the cavity 26 of the housing 20
is a guide that is sized to accommodate the contact portion 12 of the connector and the crimp barrel 16, communicates with the front of the cavity 26, and guides a pin (not shown) inserted into the contact portion 12. A hole 24 is bored. At the rear of the housing 20, a wire holding block storage chamber 25 is provided which communicates with the cavity 26 and has a size that fits and accommodates the wire holding block 16. Therefore, when the connector assembly 10 to which the electric wires are connected is assembled into the housing 20, at least the recess 17 of the electric wire holding block 16 and the insulation sheath accommodated therein are accommodated in the housing chamber 25. There is.

This assembly is then transferred to an ultrasonic machining station where an ultrasonic horn (not shown) is pressed against the portion of the housing 20 indicated by arrow A in FIG. 2 and ultrasonic waves are applied. The wire holding block 16, the covering, and the inner surface of the storage chamber 25 are heat-sealed to complete the assembly of the wire and connector. Thermal bonding of plastic by ultrasonic waves is determined by the type and size of the material used, so the specifications of the covered wire, the wire holding block 16 and the housing 20 are determined by the type and size of the material used.
The output of the ultrasonic welding device and the ultrasonic application time are determined depending on the dimensions and material of the storage chamber 25.

Next, referring to FIGS. 4 and 5, a covered electric wire 51 is crimped to the crimp type connector assembly 40 of the present invention, and the contact portion 42 of the crimp type connector 41 is connected to another type of electric element. That is, another embodiment will be described in which a plurality of covered wires 51 are connected to a printed circuit board by inserting them all at once into a through hole (not shown) of the printed circuit board and soldering them.

The crimp-type connectors 41 shown in FIG. 4 are held by the carrier 44 at the same pitch as the extremely small pitch of the through-holes provided on the printed circuit board.The flaps of the crimp barrel 46 are formed at different intervals. 4th except for
The crimp-type connector assembly 40 shown in the figure is composed of a contact part 42, a crimp barrel 43, a wire holding block 46, and a recess 47, and the manner in which it is held by a carrier 44 is the same as the connector assembly 10 explained in FIG. It is. However, in this embodiment, unlike the first embodiment, it is not incorporated into an insulator housing. Therefore, in order to achieve effective heat fusion processing between the wire holding block 46 and the wire sheathing, it is preferable to provide a fusion protrusion in the recess 47. 3rd A, B
The figure shows an example of such a welding protuberance 31,32 provided in the recess 47 of the wire holding block 46 with diagonal lines. The connector assembly 40 in FIG. 4 shows the case for 3 groups, and the pitch of the connectors is extremely small.
It is shown that one connector is sacrificed between each connector assembly 40 to serve as a dummy for the injection molding process. Furthermore, when the wire holding prong 46 is long, making such a dummy is convenient for continuously winding up the connector assembly held on the carrier onto a reel.

The connector assembly 40 shown in FIG. 4 can be connected to a corresponding covered wire 51 (FIG. 5) using an appropriate automatic crimping machine or manual crimping device.
The core wire is crimped onto the crimping barrel 46. As already explained, the crimped sheath of the covered wire 51 is accommodated in the recess 47 of the wire holding block 46. At this stage, when the ultrasonic horn is pressed against the upper surface of the wire holding block 46 and ultrasonic waves are applied, the welding ridges 31 and 32
The concave portion 47 containing the electric wire is fused to the electric wire sheath, thereby fixing the concave s47 of the holding block 46 and the electric wire sheath. This result is shown in FIG. 5 as a perspective view in the case of 5 groups.
2 and the through hole to complete the assembly.

In the embodiment of the connector described in connection with FIG.
Although the method of heat-sealing using ultrasonic waves after combining with 0 is described, it is of course also possible to assemble the housing into the housing after the heat-sealing process. That is, the fusion protrusion 61.32 explained in the second embodiment is
The wire 21 is provided in the concave portion 17 of the wire holding block 16 of No. 0, and is then subjected to batch crimping and heat fusion processing to fix the wire 21 to the connector assembly 10. In order to assemble and integrate the connector assembly 10, in which the electric wire 21 is fixed to the holding block 16, with the insulator housing, it is necessary to provide the connector with a lance and engage it with the housing, as in the past. However, as shown in FIG. 8, appropriate retaining protrusions 81 are provided on both side walls of the receiving chamber 25 of the insulating housing 20 to secure the end portion 19 of the wire holding block 16 (see FIG. 1). ), the retaining block 16 and the housing 20 can be locked together to assemble the connector.

〔Effect of the invention〕

As explained above, the crimp type connector assembly of the present invention is
To facilitate collective crimping of electric wires and crimp connectors, and to determine the pitch of crimp type connectors without considering the material width of the insulation barrel, thereby preventing wastage of sheet metal material. Furthermore, it is possible to perform batch insertion processing even for objects with a small pitch.

Further, in the case of a connector connector, a locking means corresponding to a conventional lance can be omitted.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the crimp-type connector assembly of the present invention, and FIG. 2 shows the crimp-type connector assembly of FIG. 3 is a cross-sectional view for explaining the state, FIG. 3 is a diagram showing the concave part of the wire holding block and the electric wire for explaining the fusion protrusion, and FIG. 4 is a diagram showing another embodiment of the crimp-type connector assembly of the present invention. A perspective view of an example, FIG. 5 is a perspective view of the connector assembly shown in FIG. 4, which is subjected to ultrasonic heat fusion after covered wires are crimped, and FIG. 6 illustrates a conventional crimp connector. 7 is a partially cutaway exploded view of the connector shown in FIG. 6, and FIG. 8 is a perspective view showing a means for locking the wire holding prongs and the housing in order to explain the present invention in detail. be. 10.40...Crimp type connector assembly, 11゜41
...Crimp type connector, 13.43...Crimp barrel, 15.45...Support part, 16.46...
・Wire holding block, 17.47... recess, 20
... Insulator housing, 21.51 ... Covered electric wire, 22.52 ... Core wire. Special Participant L-Kuchi International Co., Ltd. Agent Patent Attorney Hiroshi Ono Figure 5 Figure 6 Figure 7 Figure 8

Claims (3)

[Claims] (1) A connector equipped with a wire holding block integrally molded with a support portion of the connectors for fixing a plurality of connectors having crimping barrels for crimping the core wire of the covered electric wire side by side at a predetermined interval. In the assembly, after the core wires of a plurality of covered electric wires are crimped to the crimping barrel, a recessed portion for heat-sealing the electric wire holding block and the insulation coating of the covered electric wire by ultrasonic waves is attached to the electric wire. A crimp-type connector assembly, characterized in that it is provided in a holding block. (2) A connector equipped with a wire holding block integrally molded with a support portion of the connectors for fixing a plurality of connectors having crimping barrels for crimping the core wire of the covered electric wire side by side at a predetermined interval. Prepare an assembly, align the plurality of core wires corresponding to the plurality of crimping barrels, crimp them all at once, and heat-seal the wire holding block and the covering of the covered wire using ultrasonic waves. A method of connecting an electric wire and a connector, characterized by: (3) In order to fix a plurality of connectors having crimping barrels for crimping the core wire of the covered electric wire side by side at a predetermined interval,
preparing a connector assembly including a wire holding block integrally molded with a support portion of the connector, aligning the plurality of core wires corresponding to the plurality of crimping barrels and crimping them all at once; The connector assembly is inserted into the housing part of the insulator housing of the connector, and the wire holding block, the covering of the covered wire, and the insulator housing are integrally heat-sealed by ultrasonic waves. How to connect electric wires and connectors.