JPH0384884A - Connector - Google Patents

Abstract

PURPOSE:To improve the space factor of occupying area for mounting a connector and the wiring work efficiency by providing a columnar plunger member to press conductive wires to the pressure terminal of contacts so as to wiring-connect them. CONSTITUTION:To respective guide grooves 13d at the outer periphery of a cable holding cover 13, conductive wires 15 are inserted and lined up concentrically at a specific angular pitch, and the small diameter part 13b is inserted to the pressure holder 12c of a housing 12 to position the contacts of the conductive wires 15 at the inside of a pressure terminal 11c. Then, by pressing a columnar plunger member 14 in the direction of the arrow C and inserting to the inlet 13a of a penetration hole of the cable holding cover 13, a projection piece 13f is expanded to the outer side in the radial directions shown as the arrow D by the plunger member 14 because the tip of the projection piece 13f is smaller in the diameter, the conductive wires 15 are displaced in the direction to the pressure terminal 11c, the pressure terminal 11 breaks through the covers of the conductive wires making the tip insert to the escape hole 13g of the projection piece 13f, and the core conductors of the conductive wires 15 are connected to the contacts. Consequently, the space factor of the occupying area for mounting the connector and the wiring work efficiency can be improved.

Description

[Detailed Description of the Invention] [Summary] Regarding a circular connector using a pressure welding connection that facilitates cable connection work, a plurality of contacts are arranged on the circumference to make the outer shape round,
The purpose of incorporating pressure welding into the cable connection is to improve the space factor of the exclusive area for mounting the connector and the ease of connection work.
A plurality of contacts each having a pressure contact terminal portion bent at a right angle from the holding portion at the rear end, and an inner periphery of a cylindrical pressure contact holding portion such that the contacts are arranged radially toward the central axis. a housing that is held at a predetermined angular pitch; a plurality of projecting pieces each having a conductive wire guide groove formed along the outer axial direction; A cable holding cover is inserted into the press-contact holding part of the housing, and the protrusion is inserted in the axial direction of the cable holding cover to displace the protruding piece radially outward to press the conductive wire against the press-contact terminal part of the contact for connection. It is composed of a connecting cylindrical plunger member.

[Industrial application field]

TECHNICAL FIELD The present invention relates to a circular connector using a press-fit connection that facilitates cable connection work.

As a method of connecting cables to connectors, the so-called insulation displacement connection, in which a covered wire is press-fitted into a slit in a contact, and the contact pierces through the covering and connects to the core conductor, has become widely used due to its simplicity. It has become.

As a method for connecting wires to connectors, the so-called insulation displacement connection, in which a covered wire is press-fitted into a U-shaped contact, and the contact pierces through the covering and connects to the core conductor, has come to be widely used due to its simplicity. .

[Conventional technology]

FIG. 3 is a diagram showing a conventional connector using insulation displacement connection.

In the figure, reference numeral 5 denotes a cable to be connected, for example, unit wires each having a core conductor 51 covered with an insulating coating 52 are arranged in a plane at a constant pitch (for example, 1.27 mm) and integrated. The connector consists of a cover member 6 and a contact installation member 2 in which a plurality of contacts 21 are implanted in two rows. The contact 2 has a contact part (not shown) in the front part that connects to a mating connector, and a terminal part 21a in which a slit is formed in the rear part, and the terminal part 21a is arranged in two rows in a houndstooth pattern by a contact installation member. It is planted so as to protrude from the back of 2. The plurality of terminal parts 21a are arranged in the width direction of the cable at intervals equal to the arrangement pitch of the core conductors 51 of the flat cable, and the cable 5 is sandwiched between the cover member 6 and the back surface 22 of the contact installation member 2. When pressed, each terminal portion 21a is covered with the insulation coating 5.
2 and connect it to the core conductor 51, and then cover the cover member 60.
The locking hooks 61 at both ends are locked to the locking protrusions 23 of the contact installation member 2, so that the clamped state is maintained.

[Problem to be solved by the invention]

In the conventional press-contact type connector described above, a plurality of contacts are implanted in several rows in a straight line, and as the number of contacts increases, the shape of the connector becomes rectangular and becomes larger in the longitudinal direction. However, depending on the device to which the connector is attached, it may not be possible to secure a space for mounting the rectangular connector, and there is a problem with the arrangement in which the contacts are arranged in a straight line.

The present invention was created in view of the above-mentioned problems, and includes a plurality of contacts arranged on the circumference to make the outer shape round, a pressure welding method for cable connection, and a dedicated area for mounting the connector. The purpose is to improve the wiring factor and wiring workability.

[Means to solve the problem]

The above problem consists of a plurality of contacts each having a contact part at the tip, a holding part in the middle, and a pressure welding terminal part bent at a right angle from the holding part at the rear end; A housing that is held at a predetermined angular pitch on the inner circumference of a cylindrical pressure-contact holding part so as to be arranged radially, and a plurality of protrusions on which conductive wire guide grooves are formed along the axial direction on the outside are contacts. a cable holding cover that is formed to protrude in a cylindrical shape corresponding to the arrangement of the cables and is inserted into the press-contact holding part of the housing; and a cable holding cover that is inserted in the axial direction of the cable holding cover so as to radially extend the protruding pieces outward. The present invention is solved by the connector of the present invention, comprising: a cylindrical plunger member that is displaced and presses the conductive wire to the press-contact terminal portion of the contact for wire connection.

[Function] Since the contacts are arranged on the circumference and the outer shape is round, the space factor is improved compared to a rectangular one.And by press-fitting the plunger member, the conductive wire is guided by the cable holding cover and is well press-fitted to each contact. Since it is connected, the wiring work is easy.

〔Example) The present invention will be explained in detail below with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a connector of the present invention, and FIG. 2 is a sectional view showing a method of connecting the connector of the present invention.

In FIG. 1, the connector of the present invention includes a plurality of contacts 11, a housing 12 in which the contacts are implanted,
It consists of a cable holding cover 13 that guides the conductive wire, and a plunger member 14 that is press-fitted into the cable holding cover 13.

The contact 11 has a male contact portion 11a at its tip that is inserted into and makes contact with the mating contact, and a wide holding portion 11 in the middle.
b and the pressure contact terminal part 1 bent at right angles to the axial direction of the rear end.
It consists of 1c. The press-contact terminal portion 11c is formed in a U-shape having a slit for sandwiching the conductor core wire of the electric wire.

The housing 12 is a cylindrical member made of an insulating resin molded product, and has a thin cylindrical fitting part 12a1 on the distal end into which a mating connector is inserted, a thick cylindrical pressure holding part 12c on the rear side, and both sides. Disc-shaped contact holding part 1 that partitions the cylindrical part
1b. A plurality of contact holes 12d are formed in a circumferential shape at predetermined angular pitches, penetrating the contact holding part 12b and contacting the inner periphery of the press holding part 12c. The plurality of contacts 11 are press-fitted into the contact holding hole 12d as shown by arrow A, and the contact portion 11a is inserted into the cylindrical fitting portion 1.
2a, and are arranged and held radially on the inner wall of the press-contact holding portion 12c of the housing with the press-contact terminal portions 11c facing the central axis. Note that this process of press-fitting and fixing contacts can be performed all at once by manufacturing the contacts by connecting their rear ends at appropriate pitches and rolling the connected members so that each contact is located on the circumference. can.

The cable holding cover 13 is a substantially cylindrical member made of a flexible insulating resin molded product, and has a through hole I2a in the center through which a plunger member 14 (described later) is inserted during pressure welding connection, and the outer periphery is on the front side. Guide grooves 13d are formed in the outer wall along the axial direction to guide conductive wires that are divided into a small diameter portion 13b and a large diameter portion 13c on the rear side, and correspond to the arrangement angle pitch of the contacts.

An enlarged view of the small diameter portion of the cable holding cover viewed from the tip side is shown in the upper right of the figure. The small diameter portion 13b is composed of a plurality of protrusions 13f divided by slits 13e at angles equal to the angular pitch of the contacts, and each protrusion 13
On the outside of f, a cable guide groove 13d and a relief hole 13g into which the tip of the pressure contact terminal portion of the contact is inserted are formed. A projecting piece 13 forming the inner wall of the through hole 13a
The inner tip of f becomes a thick part 13h, and the through hole 13a
The tip is formed to have a smaller diameter than the inlet side.

The plunger member 14 is a cylindrical member with a slightly small diameter at the tip, and is press-fitted into the cable holding member 13 from the rear as shown by arrow B, and comes into contact with the thick part 13h at the inner end of the protruding piece 13f of the cable holding member, and protrudes. Push piece 13F outward radially.

Next, a method of connecting the cable to the connector 1I will be explained with reference to the sectional view of FIG.

First, as shown in the figure (a), the conductive wires 15 are inserted into each guide groove 13d on the outer periphery of the cable holding cover and arranged concentrically at a predetermined angular pitch. Then, the small diameter portion 13b of the cable holding cover is inserted into the pressure contact holding portion 12c of the housing 12, and the conductive wire is positioned inside the pressure contact terminal portion 11c of each contact. Next, when the cylindrical plunger member 14 is pressed as shown by arrow C and inserted into the through-hole 13a of the cable holding cover, the plunger member 1
4, it is pushed outward radially as shown by the arrow. As a result, as shown in FIG. l1115 is displaced in the direction of the insulation displacement terminal portion 11c, the insulation displacement terminal portion 11 breaks through the covering of the conductive wire, and its tip is inserted into the relief hole 13g of the protruding piece 13f, and the core wire conductor of the conductive wire 15 is connected to each contact, That state is maintained.

〔Effect of the invention〕

As explained above, according to the present invention, in a connector that employs pressure welding connection for cable connection, it is possible to arrange a plurality of contacts on the circumference to make the outer shape round, and to install and operate the connector. It is possible to save space and improve the workability of wiring.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing the connector of the present invention, Fig. 2 is a cross-sectional view showing the connection method of the connector of the invention, and Fig. 3 is an exploded perspective view showing a conventional connector using pressure connection. . In the figure, 11--contact, 11a--contact part,
11b--Holding portion, 11c--Displacement terminal portion, 12--Housing, 13--Cable holding cover, 13d--Guide groove, 14--Plunger member. 12cm...Press holding part, 13a...Through hole, 13f...Protrusion piece, 15-, ItNa.

Claims (1)

[Claims] A contact portion (11a) at the tip, a holding portion (11b) in the middle,
A plurality of contacts (11) each having a press-contact terminal part (11c) bent at a right angle from a holding part (11b) at the rear end, and the contacts (11) with the press-contact terminal part (11c) facing the central axis. The housing (12) is arranged radially on the inner periphery of the cylindrical pressure holding part (12c) and held at a predetermined angular pitch, and the guide groove (13d) for the conductive wire (15) is arranged along the outer axial direction. A cable holding cover (13 ), and the conductive wire (
15); and a cylindrical plunger member (14) that presses and connects the pressure contact terminal portion (11c) of the contact.