JPH0613137A - Multipolar connector - Google Patents

Abstract

PURPOSE:To facilitate the manufacture of connector and assemble it by overlapping individual part in a connector which is used for an audio apparatus and composed of plug in which electrodes are juxtaposed along the same axis, and a socket connected to the plug. CONSTITUTION:The lead parts 3y of ring-like electrodes 3, built in recessed grooves 10a and 10b... and having the same constitution, are individually inserted in the plural recessed grooves 10a and 10b... made by overlapping the plural ring-like insulating pieces 4 having the same constitution on a base 5. This is covered with a cap 6 to constitute a plug 1, and a contact 22 are pressedly inserted respectively in plural long grooves 29, formed on the peripheral surface of a supporting part 26 made of insulating material, along the grooves from the one-end parts of the long grooves, constituting a socket 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for use in audio equipment, which comprises a plug having a large number of electrodes juxtaposed along the same axis and a socket electrically and mechanically connected to the plug.

[0002]

2. Description of the Related Art Generally, a multi-pole connector of this type has a structure in which a plurality of ring-shaped electrodes are arranged on the same axis so as to be insulated from each other in a plug, and a socket is One end of a plurality of contacts (spring electrodes) of different shapes are attached in a circular locus to a base formed of an insulating material, and when these contacts are inserted into a plurality of ring-shaped electrodes of the plug, each contact The other end of the plug is electrically contacted with each ring-shaped electrode of the plug.

In a conventional connector plug, a plurality of ring-shaped electrodes are molded with a synthetic resin so that their inner surfaces are exposed inward, and are insulated and fixed to each other. In the socket of the connector, one ends of the plurality of contacts are molded with synthetic resin and are insulated and fixed to each other. It is also considered that a plug is formed by polymerizing a so-called castor product.

[0004]

In the conventional connector,
At the time of manufacturing both the plug and the socket, that is, at the time of molding a synthetic resin (for example, at the time of injection molding), it is necessary to insert a plurality of ring-shaped electrodes and a plurality of contacts in the molding die in advance. However, there is a problem that the manufacturing cost is high and the manufacturing unit price is high. Further, in the case of constructing by polymerizing the cast iron, there is a problem that the diameter of the entire plug becomes large if multiple layers are used because the lead portion of each ring-shaped electrode is drawn out. The present invention avoids the above-mentioned problems and provides a connector that is easy to manufacture and does not increase in size.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a plurality of ring-shaped electrodes 3 having the same structure having lead portions 3y and a plurality of continuous recesses which are inserted through the lead portions 3y by polymerization. A plurality of ring-shaped insulators 4 having a plurality of recesses 4z to be grooves on the outer peripheral surface and having the same configuration in which the ring-shaped electrodes 3 are built-in, and the ring-shaped electrodes 3 at the ends are built-in, and a plurality of ring-shaped insulations A plurality of recesses 5e that are overlapped with the child 4 and that communicate with a plurality of recessed grooves that pass through the lead portions are provided on the outer peripheral surface, and a base 5 that connects each of the lead portions and an external cable on the back surface, and a plurality of ring shapes. A plug is composed of an insulator 4 and a cap of an insulating material fitted on the outer surface of the terminal block 2 on which the base 5 is superposed.

A supporting portion 26 is formed so as to project forward from the annular portion 25 on the base 24, and a long groove 29 is formed on the outer peripheral surface thereof.
A body 21 in which is formed, and a supporting portion 2 of the body 21
A plurality of contacts 2 which are inserted into the long groove 29 of the plug 6 and are in contact with the inner surfaces of the plurality of ring-shaped electrodes 3 of the plug 1 in the inserted state of the support portion 26 into the terminal block 2.
2 and a socket is formed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a plug 1 of a multipolar connector according to the present invention will be described with reference to FIGS. The central axis of the plug 1 is indicated by O, and the right side in each perspective view and cross-sectional view is the front direction,
The left side is the rear direction. A cross section of the entire plug is shown in FIG.

FIG. 1 shows a terminal block 2 of a plug 1, which has six ring-shaped electrodes 3a to 3f, five ring-shaped insulators 4a to 4e, and a base 5. Since the ring-shaped electrodes 3a to 3f have the same configuration as each other, they will be simply referred to as electrodes 3 hereinafter unless otherwise specified.
These are the cylindrical portion 3x, as shown by the electrode 3f in FIG.
It has a lead portion 3y continuously extended outward from a part of the tubular portion 3x, and is wholly manufactured by a drawing process using a conductive material such as copper. The lead portion 3y is shown in FIG.
Is shortened.

Since the ring-shaped insulators 4a to 4e have the same structure, the insulators 4 will be simply referred to as "insulators 4" hereinafter unless otherwise specified. This insulator 4 is shown in FIGS.
As shown in B and B, it is composed of a ring portion 4x and a plurality of (six in the illustrated example) flange portions 4y formed on the outer periphery of the ring portion 4x so as to project forward from the ring portion 4x.
And 4y are integrally manufactured in advance with an insulating material such as a synthetic resin. The collar portion 4y constitutes a part of a cylinder centered on the axis O,
A plurality of groove-shaped recesses 4z are formed between them. When the radii to the inner and outer surfaces of the ring portion 4x are Ra and Rb and the radii to the inner and outer surfaces of the collar portion 4y are Rc and Rd, Rd>Rb>Rc> Ra is selected, and Ra is the inner diameter of the electrode 3. It is chosen to be slightly larger or equal to (radius).

As shown in FIGS. 1, 7A and 7B, the base 5 includes an inner wall portion 5a perpendicular to the axis O and an annular portion formed on the outer periphery of the inner wall portion 5a so as to project forward from the inner wall portion 5a. 5
b, a collar portion 5c projecting further forward than the annular portion 5b on the outer circumference of the annular portion 5b, and a plurality of partition wall portions 5d projecting rearward of the inner wall portion 5a. It is made of resin. The collar portion 5c constitutes a part of a cylinder centered on the axis O, and a plurality of groove-shaped recesses 5e are formed between them. When the radii to the inner surface and the outer surface of the annular portion 5b are Re and Rf, and the radii to the inner surface and the outer surface of the collar portion 5c are Rg and Rh, Re = Ra, R
f = Rb, Rg = Rc, Rh = Rd, and recess 5e
Is formed to have the same width as that of the recess 4z of the insulator 4.

The outer surface of each electrode 3 is just fitted to the inner surface of the collar portion 4y of each insulator 4 and the collar portion 5c of the base 5 to be housed. At this time, the lead portion 3y of each electrode 3
Are led out from one of the six recesses 4z of each insulator 4 and the six recesses 5e of the base 5. Electrode 3
Each of the insulators 4 and the base 5 that house the above are polymerized in a cap 6 described later to form a terminal block 2. FIG. 2 shows this polymerization state with the cap 6 removed.

In this case, as shown in FIG. 2, the recess 4z of each insulator 4 and the recess 5e of the base 5 are continuous with each other,
In this example, the rotational positions of the insulator 4 and the base 5 about the axis O are determined so that six concave grooves are formed.
In FIG. 2, only two recessed grooves described above are shown, and reference numerals 10a and 10b are given to them for easy understanding. A cap 6 is fitted on the outer peripheral surface of the terminal block 2 so as to cover it. The cap 6 is formed of an insulating material in a tubular shape, and the front end thereof is bent inward to form a bent portion 6a (see FIG. 5).

The terminal block 2 is, as described above,
It is stored in the cap 6 and polymerized. An example of the polymerization (assembly) step will be described. Each electrode 3 is fitted in each insulator 4 and base 5, respectively, and the recess 4z of the insulator 4 and the recess 5e of the base 5 are arranged in the diameter direction of the electrode 3. The protruding lead portion 3y is bent backward so as to be inserted into the recess 4z of the insulator 4 and the recess 5e of the base 5, respectively. First, the insulator 4a is inserted into the rear end (inlet) of the cap 6, and then the insulator 4b is inserted.

At this time, the position of the insulator 4b in the direction of rotation about the axis O is determined so that the recesses 4z of the two 4a and 4b are continuous with each other. However, the lead portion 3y of the electrode 3b is positioned so as not to overlap the lead portion 3y of the electrode 3a. Similarly, while pushing the previous insulators 4a and 4b into the cap 6, the insulators 4c to 4e are sequentially inserted, and finally the base 5 is inserted. As a result, the lead portion 3y (there are six in this example) of each electrode 3 is connected to each recess 4z,
.. formed by 5e are divided into six concave grooves 10a, 10b, ...

With the partition wall portion 5d of the base 5 still exposed to the outside from the rear end of the cap 6, the lead portion 3y of each electrode 3 is cut to an appropriate length, and as shown in FIG. It is bent along the back surface of the inner wall portion 5a, and in this state, it is connected to the cable 7 (external lead wire) by soldering or the like. Then push the base 5 firmly into the cap 6,
As shown in FIG. 3, the metal shell 11 is fitted on the cap 6 from the front side thereof, and the rear end portion of the base 5 (the partition wall portion 5d
The terminal block 2 is fixed in the cap 6 by crimping the position corresponding to the rear end). In this case, it is conceivable that a window hole is previously formed in the cap 6 at a portion corresponding to the crimping so that the crimping operation is not affected. FIG. 4 shows a state in which a clamper 9 described later is fitted to the rear end of the shell 11 accommodating the cab 6.

FIG. 11 shows an example of a state in which the terminal block 2 is assembled using a jig, and the fixing base 3
A spring 37 is housed in a fixed cylinder 36 formed on the upper surface of the carrier 5, and a slide cylinder 38 is inserted on the spring 37.
The outer diameter of the slide cylinder 38 is almost the same as the inner diameter of the electrode 3, and there is a portion with a slightly larger diameter at the lower end portion and the step portion 3
8a is formed. From the upper end of this slide cylinder 38, first insert the electrode 3a, then the insulator 4a,
b, the insulator 4b, and thus each electrode 3
And the respective insulators 4 are sequentially superposed, and finally the base 5 is superposed, and this is pushed together with the slide cylinder 38 into the fixed cylinder 36 against the elastic force of the spring 37. By this operation, the lead portion 3y of each electrode 3 is bent upward in the figure by the fixed cylinder 36, and is automatically housed in each groove 10a, 10b .... When the insulators 4 and the base 5 are superposed on each other, as described above, the respective recesses 4 are formed.
z and 5e continuously form concave grooves 10a, 10b ... And the lead portions 3y of each electrode 3 do not overlap each other and are housed in these concave grooves 10a, 10b. The position of each insulator 4 and the base 5 in the rotation direction is determined. Therefore, by pushing in the base 5, the terminal block 2 is assembled, and automation of this assembly can be expected.

The shell 11 is composed of a cylindrical front half 11a and a cylindrical rear half 11b having a diameter slightly larger than that of the shell 11. The shell 11 is integrally formed of a metal material, and the front half 11a is fitted on the cap 6. An inward bent portion 11c (see FIG. 5) formed on the front end edge is in contact with the outer surface of the bent portion 6a of the cap 6. The rear half portion 11b extends further rearward than the cap 6. An annular stopper 11d is formed integrally with the outer peripheral surface of the rear portion of the shell 11.

In the assembled state of the terminal block 2, the electrode 3a is sandwiched between the ring portion 4x of the insulator 4a and the bent portion 6a of the cap 6, and the electrode 3b is arranged in the ring portion 4x of each of the insulators 4b and 4a. Sandwiched between electrodes 3f
Is sandwiched between the annular portion 5b of the base 5 and the ring portion 4x of the insulator 4e and fixed in the respective axial directions. Electrode 3c-
Since 3e is in the same state as the electrode 3b, its explanation is omitted.

A clamper 9 is pre-tightened to the above-mentioned cable 7 via a ring 8. The clamper 9 is composed of a small cylindrical portion 9a that is a portion to be clamped to the cable 7, a trumpet-shaped portion 9b that opens forward, and a large cylindrical portion 9c. The large cylindrical portion 9 c of the shell 9 is fitted on the outer surface of the rear portion of the shell 11, and the front edge thereof is the stopper 11 of the shell 11.
It touches b.

A cover 12 is slidably attached to the rear of the clamper 9 in advance on the cable 7, and the cover 12 is slid forward to include the clamper 9 and outsert onto the rear half 11b of the shell 11. To install. This cover 1
Reference numeral 2 denotes a molded body made of synthetic resin or the like, and an inward bent portion 12a formed at a front end edge of the molded body has a shell 1
1 is engaged with the stepped portion 11e (see FIG. 5). In this state, the trumpet-shaped sloped surface 12b formed on the inner surface of the cover 12 pushes the back surface of the clamper 9 forward, and the clamper 9 moves to the shell 11
Is crimped to. The plug 1 is constructed in this way.

Next, an example of the socket 20 of the multipolar connector according to the present invention will be described with reference to FIGS. As shown in the exploded perspective view of FIG. 9, the socket 20 includes a body 21 and a plurality of (six in this example) contacts 22.
It is composed of a to 22f and a shield cover 23.
For convenience of description below, the left side (right side in FIG. 9) of FIGS. 8A and C and FIGS. 10A and 10C is the front, and the opposite direction is the rear.

The body 21 is, as shown in FIGS.
A base 24 and an annular portion 25 formed in the rear portion thereof,
The support portion 26 is formed integrally with an insulating material such as a synthetic resin in advance. A pair of L-shaped cuts 24L and 24R are formed symmetrically on the rear surface of the base 24 and communicate with each other inside the annular portion 25. The support portion 26 is formed in a cylindrical shape, and the front end has an annular portion 25 as can be seen from FIG. 10C.
Is projected sufficiently forward from the rear end, and the rear end is introduced into the annular portion 25 up to about half thereof. The annular portion 25 and the support portion 26 are connected to each other by a front wall 27 formed so as to close the front end portion of the annular portion 25. The outer diameter of the supporting portion is selected to be slightly smaller than the inner diameter of the electrode 3.

The outer peripheral surface of the supporting portion 26 has a plurality of (six in this example) long grooves 29a to 29f (collectively referred to as the long grooves 29) along the longitudinal direction, and the rear end thereof is the rear end of the supporting portion 26. The front end is extended to different positions so as to correspond to the respective electrodes 3 of the terminal block 2, as will be apparent from the later description. Further, in the long groove 29, deep grooves 30x,
30y is formed (see FIGS. 10B and 10C). The long grooves 29 are formed equiangularly about the axis O, and
A window hole 28a communicating with these long grooves 29 is also formed in the front wall 27 of No. 5.
28 f (collectively referred to as window holes 28) are formed.

The contacts 22a to 22f are made of a material having conductivity and spring properties, and are formed in substantially the same shape as shown in FIG. Hereinafter, unless otherwise specified, the contact 22 is simply called. These are a base portion 22x to be inserted into the cutouts 24L or 24R of the base 24 as shown by adding a reference numeral to the contact 22a shown in FIG.
An upper portion 22y that extends upward from this and is inserted into the annular portion 25, and a main body portion 22z that extends forward from this
Contact piece 22t further protruding forward than this
And a contact portion 22g formed near the tip thereof,
It is composed of a terminal portion 22w formed at the lower end of the base portion 22x.

As is clear from FIG. 9, the contact 22
Initially, a, 22b, and 22c are made by punching from one conductive plate in a state where the tip portions of the terminal portions 22w are continuous with each other at the connecting portion 22v as shown by dotted lines, and then each portion is as shown in the figure. Can be folded. But the upper two
2y and the main body portion 22z are punched into a bent shape in advance. In this case, the contact portions 22g of the contacts 22a, 22b, 22c are punched so as to be located in the same plane as each other, which facilitates plating finish on the contact portions 22g. Further, the main body portions 22z of the contacts 22a to 22c have the long grooves 29a to 22d of the support portion 26 described above.
They are shaped so as to maintain the positional relationship corresponding to 29c. The main body portion 22z is formed to have a slightly wider width than the other portions. The same applies to the contacts 22d to 22f.

To attach the contact 22 to the body 21, the contacts 22a to 22 are connected by the connecting portion 22v.
c, 22d to 22f are continuous with each other, the distal end portion of each contact 22 extends from the back surface in the annular portion 25 through the window hole 28 of the front wall 27 to the corresponding long groove 29 of the support portion 26.
(For example, the contact 22a is temporarily inserted in the long groove 29a). Therefore, each contact 22 has a corresponding long groove 2.
It runs alongside 9.

In this state, the connecting portion 22v of the contact 22 is
Is cut along a cutting line 31 shown in FIG. 9 to electrically separate the contacts 22. After this separation, each contact is further pressed into the long groove 29. As a result, as can be understood from FIG. 8C, both side edges of the main body portion 22z of each contact 22 are inserted into the deep grooves 30x and 30y in the long groove 29, and the contact piece 22t is elastically deformed so that the contact portion 22g is long groove 29. Exposed from outside. However, their tips are locked to the front edges of the long grooves 29, and the degree of exposure of the contact portion 22g is regulated.

With the outer peripheral surface of the annular portion 25 of the body 21 in contact with the inner surface of the latter half of the shield cover 23, bent portions 33L and 33R formed at the lower end of the rear portion of the shield cover 23 are connected to the base 24 and the annular portion 25. The outer peripheral surface of the support portion 26 is covered with the front half portion of the shield cover 23 at a predetermined interval while being engaged with and attached to the cut grooves 32L and 32R formed between. At the lower end near the rear part of the shield cover 23, there are extended parts 34L and 34R extending downward.
When the socket 20 is attached to a printed wiring board (not shown) or the like, the socket 20 is inserted into an attachment hole (not shown) of this board and the tip is bent and fixed.

According to the connector of the present invention described above, the front ends of the plug 1 and the socket 20 are opposed to each other, and the inner peripheral surface of the plug 1 (the inner peripheral surface of the terminal block 2) is supported by the socket 20. When inserted along the outer peripheral surface of the portion 26, the tip of the plug 1 collides with the front wall 27 of the annular portion 25 of the socket 20 and the insertion is stopped. In this state, the contact portion 22q of each contact 22 of the socket 20 is elastically and strongly contacted with the inner surface of each ring-shaped electrode 3 of the plug 1.

Thereby, for example, the ring-shaped electrode 3a and the contact 22a are connected, and 3b and 22b are connected. The same applies to the other ring-shaped electrodes 3 and contacts 22. Even if the plug 1 is rotated about its axis O in this state, each contact 22 is always in contact with the inner surface of each ring-shaped electrode. If the electrode 3 is manufactured in the drawing process, it has no seam, so the plug 1
There is no noise or interruption of signal transmission during rotation of the.

[0031]

According to the multi-pole connector of the present invention, a terminal block, which is a plug body, can be formed by superposing a plurality of insulators and a base having respective electrodes built therein and covering the cap with the cap. effective.
Further, in the socket, the contact can be press-fitted into the long groove of the support portion of the body from one end thereof, so that there is an effect that this can be configured. Further, when molding a molded body such as an insulator, a base or a body, it is not necessary to insert and place other parts in the molding die, so that there is an effect that these molded bodies can be easily manufactured.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a terminal block which is a part of a plug of a multipolar connector according to the present invention.

FIG. 2 is a perspective view illustrating a state in which a cable is connected to a terminal block and a cap can be covered with the cable.

[Fig. 3] On the cap containing the terminal block,
The perspective view explaining the state which can cover a shell.

FIG. 4 is a perspective view showing a state in which the cover is covered on the shell in which the cap is housed and the rear end is fitted with the clamper.

FIG. 5 is a vertical sectional view showing an example of a plug of the multipolar connector according to the present invention.

FIG. 6 is a front view showing an example of a ring-shaped insulator that can be used for the plug, and B is a cross-sectional view taken along the line I-I.

FIG. 7A is a front view showing an example of a base that can be used for the plug, and B is a sectional view taken along the line II-II.

FIG. 8 is a side view showing an example of the socket of the multipolar connector according to the present invention, B is a rear view thereof, and C is a rear view thereof.
FIG. 3 is a sectional view taken along line III-III in FIG.

9 is an exploded perspective view of the socket shown in FIG.

10A is a side view of a body that can be used in this socket, B is a rear view thereof, and C is a sectional view taken along line IV-IV of A. FIG.

FIG. 11 is a cross-sectional view showing an example of assembling a terminal block using an assembly jig.

Claims (2)

[Claims] 1. A plurality of ring-shaped electrodes each having a lead part and formed identically to each other and arranged on the same axis, except for one end of the ring-shaped electrodes. A plurality of ring-shaped insulators, which are formed in the same manner, each having another ring-shaped electrode built therein, and having a plurality of recesses on the outer peripheral surface, which are a plurality of continuous recessed grooves that are inserted through the lead portion by polymerization, and the ends. Part of the ring-shaped electrode is built-in, is overlapped with the plurality of ring-shaped insulators, and has a plurality of recesses on the outer peripheral surface that communicate with the plurality of recessed grooves that pass through the lead parts. A base for connecting an external cable, and a cap formed of an insulating material fitted along the outer surface of the terminal block configured by superposing the plurality of ring-shaped insulators and the base, Multipolar connector plug, characterized in that made the. 2. The terminal according to claim 1, wherein the base, an annular portion formed on the base, a front end projecting from the annular portion, and a long groove extending to a rear end are formed on an outer peripheral surface of the terminal. A body including a tubular support portion inserted into the block, and a support portion of the body, which is inserted into the long groove, and is provided in the plug in a state where the support portion is inserted into the terminal block. A socket for a multipolar connector, comprising: a plurality of contacts that are respectively in contact with a plurality of ring-shaped electrodes.