JP3332900B2 - Multi-core connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core connector used for connecting electric wirings of electronic devices connected to each other by a number of electric wirings.

[0002]

2. Description of the Related Art Signals to be transmitted and received are diversified and complicated in high-performance electronic equipment such as medical equipment (for example, ultrasonic diagnostic equipment), computers, communication equipment, and sensor devices. Circuit connections between cables and between cables and electronic devices tend to be multicore. Along with this, for multi-core connectors, more multi-core, miniaturization,
Higher density devices and higher reliability have been required. As a multi-core connector, despite the need for connection between many contact parts, it is desired to supply a long-life connector with extremely low insertion / extraction force when connecting and pulling out the connector, and with little contact part wear. It is rare.

An example of a conventional multi-core connector 100 is shown in FIG.
Shown in The multi-core connector 100 includes a plug 101 connected to one electronic device (not shown) of two electronic devices to be connected and a receptacle 102 connected to the other electronic device (not shown). . In the case of connection, the plug 101 is inserted into the receptacle 102 (zero insertion force), the two are connected, and then a handle (not shown) is rotated to rotate the camshaft 103 provided at the center of the plug. . By this process, the actuator 105 is slid by the action of the cam 104 provided on the camshaft 103, and the contact 106 formed at the tip of the contact pin 108 is elastically contacted with the contact 107 of the receptacle 102. , The contacts 106 of the plug 101 are pressed against the corresponding contacts 107 of the receptacle 102 to electrically connect them.
Further, the rotation of the camshaft 103 causes a lock, and the plug 101 and the receptacle 102 are securely fixed.

In this case, when the number of cores increases, the camshaft 1
There was a problem that the rotational torque at the time of fitting of No. 03 became large.

For example, a person who uses this connector to connect the main body of the ultrasonic device to the signal cable of the ultrasonic sensor mounts the receptacle 102 on a circuit board (not shown) of the ultrasonic device by soldering. Receptacle 10
The electric connection is obtained by fitting the plug 101 to the plug 2.

On the other hand, when a cable is wired to the plug 101, the core wire of the cable (not shown) is
9, or the contact terminals 109 are mounted on a circuit board, and a cable is drawn out from the wiring of the circuit board.

As a countermeasure against crosstalk noise between wirings, the signal lines are protected from crosstalk by, for example, alternately arranging the contacts 106 in the connector on a signal line and a ground line.

[0008]

In the conventional structure shown in FIG. 16, the contact pitch cannot be further reduced, and the number of contacts that can be arranged is limited. For this reason, it cannot meet the market demand for increasing the number of signal lines that will occur in the future. Further, a connector having a connector size comparable to that of the model shown in FIG. 16 described as a conventional example and further having excellent electrical characteristics (such as prevention of crosstalk noise) is desired.

In the model shown in FIG. 16, since the terminals 110 of the receptacle contacts 102 are mounted by soldering, mounting costs and equipment costs are large in this soldering process.

[0010]

SUMMARY OF THE INVENTION A multi-core connector according to the present invention has a plug housing into which an electrical cable including a plurality of core wires is introduced, and first and second opposed surfaces attached to the bottom of the plug housing. A plug having a first substrate, wherein a plurality of connection pads respectively connected to a plurality of core wires of the electric cable are arranged on a first surface of the substrate, and a plurality of connection pads are arranged on a second surface. A plurality of contact pads respectively corresponding to the connection pads and electrically connected to each other via a metal wiring passing through the first substrate, and a receptacle housing having an opening into which a plug is inserted, and a receptacle housing A metal contact strip holder having a plurality of metal contact strips, wherein the metal contact strips are disposed on the second surface of the plug within the receptacle housing. A plug driving means having a first end to be brought into contact with the contact pad, a second end electrically connected to an external electronic device connected to the receptacle, and disposed in the receptacle housing; A first guide portion is formed on an outer side wall of the plug housing, and the first guide portion is combined with the first guide portion when the plug is fitted with the receptacle on the inner side wall of the receptacle housing. And a second guide portion for guiding the plug to the fixed position by the plug driving means. After the plug is inserted into the receptacle, the plug is urged by the plug driving means to be connected to the first and second guide members. The multi-core is guided and moved in the receptacle, and the plurality of contact pads are fitted so as to be in contact with the first ends of the predetermined metal contact pieces. It is a connector.

Further, the receptacle housing of the multi-core connector of the present invention has a second substrate having opposing third and fourth surfaces mounted on the bottom of the receptacle housing, wherein the third surface has metal contacts. A multi-core connector in which a plurality of contact pads respectively contacting the second end of the piece are formed, and which are electrically connected to an external electronic device via wiring connected to the contact pads on the third surface.

Further, the metal contact piece holding portion is a multi-core connector including a plurality of insulator modules in which the plurality of metal contact pieces are insulated and aligned with each other.

Further, in the insulator module, a multi-core connector is arranged such that each metal contact piece is surrounded by a metal shield component via a plastic material.

When the plug is inserted into the receptacle housing, the shutter opens at the inside of the housing, and closes the upper opening of the receptacle housing when the plug is pulled out. It is a multi-core connector having.

The first guide member is a projection,
The second guide member is a multi-core connector that is a roller that rotates around a predetermined rotation axis.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to specific examples shown in the accompanying drawings. FIG.
FIG. 1 is a perspective view illustrating an outer shape of a multi-core connector 1 according to the present invention. As shown in the figure, a multi-core connector 1 of the present invention has a plug 2 and a receptacle 3. A camshaft 4 for laterally moving the plug 2 inserted into the receptacle 3 to a fixed position is attached to the receptacle 3, and a handle 5 for rotating the camshaft 4 is disposed above the camshaft 4. I have.

FIG. 2 shows the outer shape of the plug 2. A cable (not shown) connected using the multi-core connector 1 is inserted into the plug 2 from the cable insertion portion 6, and each core wire of the cable has a substrate having each contact portion with the receptacle 3.
That is, they are connected to the upper wiring (not shown) of the printed circuit board 10 (see FIG. 3). A protrusion 9 having a flat upper surface 8 is provided at a predetermined position of the side wall 7 to guide the lateral movement of the plug 2 after being inserted into the receptacle 3 and to move the plug 2 to a predetermined position of the receptacle 3. , Preventing the plug 2 from coming off upward.

FIG. 3 shows the shape of the plug 2 as viewed from below. A board, for example, a printed circuit board 10
Is arranged. The printed circuit board 10 is preferably a double-sided wiring board having through holes for electrical conduction, and a plurality of connection electrodes (not shown) of the upper wiring are provided with a core wire of a cable to be connected, for example, by soldering or the like. The lower wiring is formed with a plurality of contact pads (not shown) that contact the contact pins of the receptacle 3. A rectangular hole 11 is provided at an end in the longitudinal direction, and is combined with a hook with a roller of the receptacle 3.

FIG. 4 shows an example of a component configuration of the plug 2.
The plug 2 includes a back shell 12 constituting a lid, a plug housing 13 for accommodating a cable and each core wire from the outside, and a plurality of contacts of the receptacle 3 on the upper surface with each core wire such as a cable connected thereto. Printed circuit board 1 having a plurality of contact pads for contacting terminals
Has zero. Back shell 12 and plug housing 13
Are fixed at four corners by screws 14, and the plug housing 13 and the printed circuit board 10 are also fixed by screws 15. The back shell 12 can be formed of a metal such as aluminum or an insulating material such as an epoxy resin, but it is preferable to use a metal for electromagnetic shielding. The plug housing 13 is formed using a metal such as aluminum. As the printed circuit board 10, for example, a glass epoxy board having a multilayer wiring structure can be used. FIG. 15 shows an example of the printed circuit board 10. FIG. 15A shows a fitting surface having a plurality of contact pads 74 that come into contact with a plurality of contact terminals of the receptacle 3. FIG. 15C shows FIG.
It is an enlarged view of X part of 5 (A). FIG. 15D shows an upper surface to which a cable core wire and the like facing the fitting surface are soldered.

FIG. 5 is a perspective view showing the outer shape of the receptacle 3. The receptacle 3 is horizontally held by a shutter lock hook 19 before the plug 2 is inserted in order to protect the contact housing from the external environment and the receptacle housing 16 accommodating the plurality of insulator modules 20 (see FIG. 6). And a plurality of insulator modules 2 that open inward when the second module 2 is inserted.
A substrate, for example, a printed circuit, having a plurality of contact pads disposed thereon and having a plurality of contact pads for making electrical contact with these contact terminals, and being mounted on and electrically connected to the external electronic device. And a substrate 17.

FIG. 6 shows the internal structure of the receptacle housing 16 when the shutter 18 is opened. A frame portion 22 in which a plurality of slits 21 are arranged is arranged on the printed circuit board 17, and the insulator module 20 is inserted into the slit 21 and is in contact with a contact pad of the printed circuit board 17. Plug 2 is hook 2 with roller after insertion
A push roller 33 supported by 3 is driven horizontally to a fixed position in the longitudinal direction along the side wall 25 of the receptacle housing 16. The side wall of the receptacle housing 16 is provided with a side roller 24 for guiding the plug. When the plug 2 is moved to the fixed position, the lower side of the side roller 24 is moved to the plug side wall 7.
Is moved laterally to the fixed position.

FIG. 7 shows a component configuration diagram of the receptacle 3. The actuating box 30 is assembled with a bearing cam 32 for receiving a cam 31 formed at a lower portion of the camshaft 4 and a component push roller 33 for pushing the plug 2 in the longitudinal direction when fitted. The driving means 34 is formed.

A shutter lock box 35 has a component hook 36 for always locking the shutter 18 when the plug 2 is not fitted, and a spring 3 for pushing the hook 36.
7 is fixed by screws 39 by a cover 38.

When the plug 2 is fitted, the plug 2 and the receptacle 3 are connected to the ground, and when the electrical connection of the connector 1 is released, the plug 2 is pushed upward.
0 is sandwiched between the return plate stopper 42 press-fitted into the hole 73 provided at a predetermined height on the side wall of the receptacle housing 41 and the receptacle housing 41, and is constantly pushed up by the spring 43.

When the plug 2 is fitted, the side rollers 24 for pulling the plug 2 to the fixed position are fixed to the side wall 45 of the receptacle housing 41 by E-rings 44 at four places.

The above-mentioned actuating box 30 is provided with a recess 4 provided at a longitudinal end of a receptacle housing 41.
6, the plug 2 is always pressed against the inner wall 79 at the longitudinal end of the receptacle housing 41 by the spring 47 before the plug 2 is driven to the fixed position. Further, the cam shaft 4 passes through the opening 52 of the actuating box 30 and the hole 51 provided in the housing 41 to the bottom 53 of the receptacle housing 41.
Is fixed by an E-ring 50 on the lower surface of the.

[0027] Shutter lock box 35, spring 3
7, a hook 36 and a cover 38, the shutter box assembly 54 is a shutter lock box 35.
The camshaft 4 is passed through a hole 55 provided in the receptacle housing 41, and is fixed to the mounting portion 57 of the receptacle housing 41 using two screws 56.

The shutter 18 has a hole 58 formed at the upper end of the side wall of the receptacle housing 41 and the shutter 1.
8 is attached to the receptacle housing 41 through a shaft 60 through a hole 59 provided on a side portion of the receptacle housing 8. The shutter 18 is constantly pushed up by the torsion spring 61 in the closing direction.

Further, the shutter 18 is locked so as not to be opened by a groove 62 of a hook 36 which is combined with a shutter lock box 35 and is urged toward the shutter 18 by a spring 37.

In the slit 21 provided in the receptacle housing 41, a metal contact piece 64 is attached to the insulator 63.
The metal contact piece insulator module 20 including the plurality of contact elements 70 into which is incorporated is press-fitted. The insulator module 20 includes a plurality of metal contact pieces 64.
Are insulated and aligned with each other.

The printed circuit board 17 is sandwiched between the receptacle housing 41 and the stiffener 65 assembled as described above. For example, the printed circuit board 17 is screwed at six places and tightened. At this time, the metal contact piece 64 incorporated in the insulator module 20 is brought into contact with a contact pad (not shown) provided on the printed circuit board 17 by applying a predetermined contact force to obtain electrical continuity. Will be done.

FIG. 12 shows an example of a contact element constituting the insulator module 20. The contact element 70 is formed by fitting the metal contact piece 64 into the groove 68 of the insulator 63 molded from a plastic material.
The signal contact contact portion 81 of the metal contact piece 64 contacts a contact pad formed on the lower surface of the substrate 10 of the plug 2.

In particular, when it is necessary to electrically shield each contact element in order to prevent crosstalk between wirings, a shield part 69 made of a metal material is prepared, and a metal contact piece 64 is formed in the groove 68. Insulator 6 placed
3 is inserted into the shield component 69 to form the shieldable contact element 76, and the insulator module 20 in which the shieldable contact element 76 is arranged as shown in FIG.
Can be formed and used. By providing the ground terminal 72 on the shield component 69, a common metallic ground member (not shown) and the shield plate contact contact portion 80 can be brought into contact with each other, and the shield can be more completely performed.

FIG. 13 shows an embodiment of the insulator module 20. A plurality of contact elements are arranged and arranged in the frame part 71. FIG. 13A is a perspective view showing the appearance. FIG. (F) is a cross-sectional view taken along line AA of FIG. (C). In this embodiment, in particular, the adjacent contact elements are arranged opposite to each other. Such an arrangement facilitates the arrangement of the contact pads of the printed circuit boards 10 and 17 that require a larger area than the contacts of the contact pieces, even when the pitch of each contact element is reduced for miniaturization. .

FIG. 14 shows the insulator module 20.
5 shows another embodiment in which a plurality of shieldable contact elements 70 are arranged in a frame part 71. Each metal contact piece 6
Reference numerals 4 are arranged so as to be surrounded by shield components 69 that can be grounded.

Next, an outline of the operation of the multi-core connector 1 based on the configuration of the above embodiment will be described. (1) Insertion Insert the plug 2 into the receptacle 3. When the plug 2 is inserted into the receptacle 3 from above, the hook 36 inserted into the shutter lock box 35 is pushed in, so that the hook 36 slides toward the shutter lock box 35 and is inserted into the groove 62. The shutter 18 is released from the groove 62 and the shutter 18
Is unlocked. Thus, the shutter 18 can be opened downward. When the plug 2 is inserted as it is, the unlocked shutter 18 is pushed into the plug 2 and opens, and the protrusion 9 is moved to the shutter 1.
Guide member 67 formed on the surface of shutter 8 and shutter 18
Is guided by the side roller 24 protruding from the hole 75 formed in the hole 75 and reaches the return plate 40. At the final stage of insertion, the square hole 11 provided on the lower side of the end of the plug 2 is combined with the hook 66 and the push roller 33 of the actuate box 30 incorporated in the receptacle 3,
The temporary insertion is completed. FIG. 8 shows this state. And FIG.
Shows a partially enlarged sectional view of FIG. 8D in this state.

(2) Fitting The fitting between the plug 2 and the receptacle 3 is performed by rotating the camshaft 4 of the receptacle 3 90 ° clockwise as shown in FIG. The cam 3 provided on the camshaft 4 by rotating the camshaft 4
1 moves the actuate box 30 to the right as shown in FIG. Actuator box 3
The 0 push roller 33 is pushed and slides in the same direction. Accordingly, the plug housing 13 is also urged rightward by the push roller 33.

As shown in FIGS. 10A and 10B,
When the plug housing 13 is urged rightward, the protrusion 9 provided on the side surface of the plug 2 sinks below the side roller 24 attached to the receptacle 3,
The plug 2 slides laterally and slightly obliquely downward on the return plate 40 of the receptacle 3 while being pressed downward by the side rollers 24. Then, as shown in FIGS. 10C and 10D, the lower surface of the printed circuit board 10 of the plug 2 lands on the insulator module 20 of the receptacle 3.

As shown in FIG. 11 which is a partially enlarged view of FIG. 10 (D), contact pads (not shown) provided on the lower surface of the printed circuit board 10 thus attached to the plug 2 The metal contact pieces 64 of the insulator module 20 of the receptacle 3 come into contact with each other, and an electrical connection between the plug 2 and the receptacle 3 is obtained. Also, when the printed circuit board 10 slides at the time of contact, the printed circuit board 1
A wiping effect can be obtained between the contact pad provided on the lower surface of the “0” and the metal contact piece 64 of the receptacle 3.

At the same time, the plug body is connected to the receptacle 3
And makes electrical connection between the housings. This makes it possible to take measures against EMI, that is, to shield external electric noise.

(3) Drawer The drawer rotates the shaft 4 by 90 ° counterclockwise. With the rotation of the camshaft 4, the cam 31 provided on the shaft 4 slides the actuating box 30 in the direction of the end opposite to that at the time of fitting, and pulls back the plug body.

Then, the plug 2 slides at the same time, and the projection 9 on the side of the plug is moved to the side roller 2 of the receptacle 3.
4, and at the same time, the plug 2 is returned to the original position by the recoil of the spring 43 below the return plate 40. At this time, the printed circuit board 10 of the plug 2 is released from contact with the insulator module 20, and the electrical connection is cut off.

The embodiments of the present invention described herein are merely examples, and the embodiments of the present system can be variously modified.

[0044]

According to the structure and operation described above, the multi-core connector of the present invention has the following effects as compared with the conventional multi-core connector.

By reducing the contact pitch and forming the plug-side contact as the pad surface of the printed circuit board, the entire surface of the printed circuit board can be used, so that the connector size (only on the plug side) can be reduced. Becomes

Further, by using a coaxial type insulator module as shown in FIG. 14 and individually shielding each contact piece arranged in the receptacle, it is possible to reduce crosstalk noise in the connector. Becomes In addition, it is possible to improve the effect of noise suppression by shortening the contact length to shorten the electric transmission distance.

Further, since the electrical connection can be obtained only by fixing the receptacle to the circuit board of the electronic device with a screw, the solder mounting step on the user side can be omitted.

Further, when the plug and the receptacle are fitted together, the electrical contact portion is connected by landing by pulling in by the side rollers of the receptacle, so that the rotational torque force at the time of fitting can be reduced even in a multi-core configuration. Become.

Further, since each contact piece is modularized, the wiring connection between the external cable and the receptacle contact piece is made via the printed circuit board of the receptacle. Connection processing becomes easy.

Further, since the shutter is provided at the opening of the receptacle, the operator does not directly touch the contact piece in the receptacle, and thus the contact piece can be protected from dirt. It is also a measure against dust.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outer shape of a multi-core connector of the present invention.

FIG. 2 is a view showing an outer shape of a plug constituting the multi-core connector of the present invention.

FIG. 3 shows a view of the plug from below.

FIG. 4 is a diagram illustrating an example of a component configuration of a plug.

FIG. 5 is a perspective view showing an outer shape of a receptacle constituting the multi-core connector of the present invention.

FIG. 6 is a diagram showing the internal structure of the receptacle housing when the shutter is opened for the receptacle.

FIG. 7 is a diagram showing a component configuration diagram of the receptacle 3;

FIG. 8 is a cross-sectional view of the multi-core connector of the present invention in a state where the plug 2 is inserted into the receptacle.

FIG. 9 is a partially enlarged view of FIG. 8;

FIG. 10 is a cross-sectional view of the multi-core connector of the present invention in a state where the plug 2 has been moved to a fixed position after being inserted into the receptacle.

FIG. 11 is a partially enlarged view of FIG. 10;

FIG. 12 shows a contact element.

FIG. 13 is a diagram showing one embodiment of an insulator module.

FIG. 14 is a diagram showing another embodiment of the insulator module.

FIG. 15 is a diagram showing a printed circuit board.

FIG. 16 is a diagram showing a partial cross section of a conventional multi-core connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Multi-core connector 2 ... Plug 3 ... Receptacle 4 ... Camshaft 5 ... Handle 6 ... Cable insertion part 7 ... Side wall 8 ... Top surface 9 ... Projection 10.17 ... Printed circuit board 11 ... Square hole 12 ... Back shell 13 ... Plug housings 14, 15 ... Screw 16 ... Receptacle housing 18 ... Shutter 19 ... Shutter lock hook 20 ... Insulator module 21 ... Slit 22 ... Frame part 23 ... Hook with roller after insertion 24 ... Side roller 25 ... Side wall 30 ... Actuate box DESCRIPTION OF SYMBOLS 31 ... Cam 32 ... Bearing cam 33 ... Push roller 34 ... Plug driving means 35 ... Shutter lock box 36 ... Parts hook 36 ... Hook 37, 47 ... Spring 38 ... Cover 39 ... Screw 40 ... Return plate 41 ... Receptacle housing 42 ... Return Rate stopper 43 ... Spring 44 ... E-ring 45 ... Side wall 46 ... Depression 50 ... E-ring 51 ... Hole 52 ... Opening 53 ... Bottom 54 ... Shutter box assembly 55 ... Hole 56 ... Screw 57 ... Mounting part 58 ... Hole 59 ... Hole 60 ... Shaft 61 ... Torsion spring 62 ... Groove 63 ... Insulator 64 ... Metal contact piece 65 ... Stiffener 66 ... Hook part 67 ... Guide member 68 ... Groove 69 ... Shield part 70 ... Contact element 71 ... Frame part 72 ... Ground terminal 73 ... Hole 74 ... Contact pad 75 ... Hole 76 ... Contact element with shield part 77 ... Plug side contact part 78 ... Receptor board side contact part 79 ... Inner wall 80 ... Shield plate contact contact part 81 ... Signal contact contact part 100 ... Multi core Connector 101: Plug 102: Receptacle 103: Camshaft 104: Cam 05 ... Akuchuta 106,107 ... Contacts 108 ... contact pins 109 ... contact terminals 110 ... terminal

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/639 H01R 12/16 H01R 13/629 H01R 13/648

Claims (6)

(57) [Claims] 1. A plug housing into which an electrical cable including a plurality of core wires is introduced, and a first housing having a first and a second opposed surface attached to a bottom portion of the plug housing.
Wherein a plurality of connection pads respectively connected to a plurality of core wires of the electric cable are arranged on a first surface of the substrate, and a plurality of connection pads are respectively arranged on the second surface. A plurality of contact pads respectively corresponding to the plurality of connection pads and electrically connected to each other via metal wiring passing through the first substrate, and a receptacle housing having an opening into which the plug is inserted; A metal contact piece holder having a plurality of metal contact pieces attached to the receptacle housing, wherein the metal contact piece is disposed on the second surface of the plug in the receptacle housing. A first end to be in contact with the pad, and a second end electrically connected to an external electronic device connected to the receptacle; A receptacle having plug driving means disposed in the receptacle housing, wherein a first guide portion is formed on a side wall of the plug housing, and the plug is fitted to the receptacle on a side wall of the receptacle housing. When the plug is inserted into the receptacle, the plug is connected to the plug when the plug is inserted into the receptacle. are more guided by the first and second guide portions component moves within the receptacle obliquely downward by being biased in the horizontal direction by driving means, said plurality of contact pads each predetermined said metal contact piece First
A multi-core connector, which is fitted so as to be in contact with an end of the multi-core connector. 2. The method according to claim 1, wherein the receptacle housing is provided with an opposing third member mounted on a bottom of the receptacle housing.
And a second substrate having a fourth surface, wherein the third surface is formed with a plurality of contact pads respectively contacting the second end of the metal contact piece, and the third surface 2. The multi-core connector according to claim 1, wherein the multi-core connector is electrically connected to an external electronic device via a wiring connected to the contact pad. 3. The metal contact piece holding portion includes a plurality of insulator modules in which the plurality of metal contact pieces are insulated from each other and aligned. The multi-core connector as described. 4. The multi-core connector according to claim 3, wherein each of the metal contact pieces is arranged so as to be surrounded by a metal shield component via a plastic material in the insulator module. . 5. When the plug is inserted into the receptacle housing, the plug opens toward the inside of the housing, and when the plug is pulled out, closes an upper opening of the receptacle housing. The multi-core connector according to any one of claims 1 to 4, further comprising a shutter provided. Wherein said first guide portion component is a protruding portion, the second guide portion content is according to any one of claims 1 to 4 is a roller which rotates around a predetermined rotational axis Multi-core connector.